Cross-sectional study of proteomic differences between moderate and severe psoriasis | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Cross-sectional study of proteomic differences between moderate and severe psoriasis Lingling Wu, Chen Cen, Bibo Xie, Lihua Hu, Jia Huang, Ningning Shen, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4710909/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 27 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted 16 You are reading this latest preprint version Abstract Although an ongoing understanding of psoriasis vulgaris (PV) pathogenesis, little is known about the proteomic differences between moderate and severe psoriasis. In this cross-sectional study, we evaluated the proteomic differences between moderate and severe psoriasis using data-independent acquisition mass spectrometry (DIA-MS). 173 differentially expressed proteins (DEPs) were significantly differentially expressed between the two groups. Among them, 85 proteins were upregulated, while 88 were downregulated (FC ≥ ± 1.5, P < 0.05). Eighteen DEPs were mainly enriched in the IL − 17 signalling pathway, Neutrophil extracellular trap formation, Neutrophil degranulation and NF − kappa B signalling pathway, which were associated with psoriasis pathogenesis. Ingenuity pathway Analysis (IPA) identified TNF and TDP53 as the top upstream up-regulators, while Lipopolysaccharide and YAP1 were the top potential down-regulators. The main active pathways were antimicrobial peptides and PTEN signalling, while the inhibitory pathways were the neutrophil extracellular trap pathway, neutrophil degranulation, and IL-8 signalling. 4D-parallel reaction monitoring (4D-PRM) suggested that KRT6A were downregulated in severe psoriasis. Our data identify Eighteen DEPs as biomarkers of disease severity, and are associated with IL − 17 signalling pathway, Neutrophil extracellular trap formation, NF − kappa B signalling pathway, and defence response to the bacterium. Targeting these molecules and measures to manage infection may improve psoriasis's severity and therapeutic efficacy. Biological sciences/Immunology Biological sciences/Molecular biology Health sciences/Biomarkers Health sciences/Medical research Proteomics Psoriasis Vulgaris 4D-Parallel Reaction Monitoring Data-Independent Acquisition Mass Spectrometry Ingenuity Pathway Analysis Biomarker Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Introduction Psoriasis vulgaris (PV) is a common, chronic and immune-related skin disease which can also cause multisystem damage like depression (especially in young people) 1,2 and psoriatic arthritis 3 . Recent research has focused on the crucial roles of immune molecules in PV, such as IL-17A/F, IL-23, and TNF-α 4 . Biological agents have significantly improved psoriasis efficacy, but a loss of effectiveness 5 often occurs in clinical practice. Therefore, it is necessary to explore this disease further to discover more critical immune molecules involved in pathogenesis and develop new drugs. In the last decade, proteomic approaches have been used to identify and characterize proteins that participated in the pathogenesis of psoriasis or other skin diseases. For instance, recent studies have shown the circulating proteomic landscape of psoriasis and hidradenitis suppurativa (HS) using a smaller Olink proteomic platform 6,7 . In a large-scale proteomic study using a novel extended Olink platform assessing 1536 biomarkers, Navrazhina K et al . found that HS presents a more extraordinary serum inflammatory burden 8 . The above results suggest that detecting more biomarkers could help us discover critical immune molecules and deepen our understanding of disease pathogenesis. Several studies have identified proteins associated with the severity of psoriasis, such as some Antimicrobial peptides (AMPs) (S100A7, S100A8, S100A9 and PI3) 9–11 . Still, they mainly evaluate blood samples or the stratum corneum (SC) cells, or the platforms used in these studies have limited ability to detect more proteins. Data-independent acquisition mass spectrometry (DIA-MS) is a proteomic technology that combines deep proteome coverage capabilities with quantitative consistency and accuracy 12 , which has been successfully used for the investigation of skin disease 13,14 , as described in our previous study 15 . Until now, no studies have directly compared proteomic differences between severe and moderate psoriasis in psoriatic lesions. Here, we used DIA-MS to characterize the proteomic differences between severe PV (sPV) and moderate PV (mPV) in psoriatic lesions and explore biomarkers associated with disease severity. Finally, we validated selected differentially expressed proteins (DEPs) with 4D-parallel reaction monitoring (4D-PRM) technology 16 . Results Quantitative analysis of proteins in psoriatic lesions using DIA For DIA detection, fifteen samples were collected from patients with sPV(n = 7) and mPV(n = 8). Then, 4D-PRM was performed for validation in twelve newly collected cases. The characteristics of included patients are shown in Table 1 . Table 1 Baseline Characteristics of Psoriasis Patients DIA test PRM validation Variables sPV groups(n = 7) mPV groups(n = 8) sPV groups(n = 6) mPV groups(n = 6) Sex- no. (%) Male 6(85.7%) 4(50.0%) 5(83.3%) 2(33.3%) Female 1(14.3%) 4(50.0%) 1(16.7%) 4(66.7%) Age, year Mean ± SD. 51.6 ± 16.8 42.4 ± 15.5 48.8 ± 14.3 33.5 ± 7.9 Median (IQR) 47.0(34.0–66.0) 41.0(29.3–59.0) 45.5(36.8–59.8) 33.0(28.8–38.5) Range 34.0–76.0 22.0–64.0 36.0–74.0 22.0–46.0 Course, year Mean ± SD. 24.3 ± 16.0 13.8 ± 14.9 11.3 ± 8.0 4.6 ± 3.9 Median (IQR) 21.5(11.0-40.8) 10.0(2.3–20.3) 8.5(6.0-15.8) 4.0(0.9-8.0) Range 6.0–50.0 0.5–46.0 6.0–27.0 0.5–11.0 Previous treatment - no. (%) Topical therapy 6(85.7%) 8(100.0%) 5(83.3%) 5(83.3%) Systemic therapy 7(100.0%) 6(75.0%) 4(66.7%) 4(66.7%) Phototherapy 4(57.1%) 3(37.5%) 1(16.7%) 2(33.3%) Biologic therapy 2(28.6%) 1(12.5%) 0(0.0%) 0(0.0%) Family history - no. (%) Yes 3(42.9%) 1(12.5%) 3(50.0%) 1(16.7%) No 4(57.1%) 7(87.5%) 3(50.0%) 5(83.3%) Comorbidity- no. (%) Yes 4(57.1%) 0(0.0%) 1(16.7%) 1(16.7%) No 3(42.9%) 8(100.0%) 5(83.3%) 5(83.3%) PASI (0 weeks), score Mean ± SD. 24.6 ± 5.8 11.2 ± 2.4 30.6 ± 10.6 9.0 ± 2.2 Median (IQR) 21.0(20.1–31.5) 11.6(10.0-12.2) 25.8(22.8–43.6) 8.8(7.0-11.2) Range 19.1–33.3 6.8–15.0 20.2–44.6 6.8–11.8 no. (%), number; SD, standard deviation; IQR, interquartile range. A total of 6418 proteins were quantified in the proteomic experiment, with a false discovery rate (FDR) of less than 1% at both the peptide and protein levels. Protein identified in technical replicates and control samples showed a relatively low coefficient variance (CV) (see Supplementary Fig. S2 online). Bioinformatics analysis and functional description of DEPs in moderate and severe psoriasis 173 DEPs were significantly changed in the sPV group compared to the mPV group (FC ≥ ± 1.5, P < 0.05). Among them, 85 proteins were upregulated, while 88 were down-regulated (see Supplementary Table S1 online). Nine proteins with the highest FC were OSBPL6, CYFIP2, MYOCD, AGO3, DCD, PCBP4, LRIF1, DLG5 and KRT15 in the upregulated proteins. Among the down-regulated proteins, nine proteins with the highest -FC were MTMR10, CCNDBP1, STK3, LAMP1, UBE2D1, APBB3, BPI, SULT1B1 and IGHM (Fig. 1 ). To further investigate the molecular functions of these DEPs, we performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis in the sPV and mPV groups. The top 10 significant difference clusters of GO terms were displayed in Fig. 2 a. Biological process enrichment included defence response to Gram-negative bacterium, antimicrobial humoral immune response mediated by antimicrobial peptide, antibacterial humoral response, positive regulation of stem cell proliferation, nucleotide-excision repair, DNA incision, regulation of protein tyrosine kinase activity, positive regulation of catalytic activity, response to Lipopolysaccharide, regulation of phagocytosis and sequestering of metal ion. The top 20 RichFactor of enriched pathways were illustrated in Fig. 2 b. The top 10 of KEGG enrichment included Caffeine metabolism, RNA polymerase, Cytosolic DNA-sensing pathway, Hematopoietic cell lineage, IL-17 signalling pathway, Neutrophil extracellular trap formation, Insulin resistance, Natural killer cell mediated cytotoxicity, B cell receptor signalling pathway and NF-kappa B signalling pathway. Identification of proteins and pathways associated with psoriasis pathogenesis and disease severity As shown in Supplementary Table S2 , DEPs in the sPV group, compared to the mPV group, participated in the IL − 17 signalling pathway, Neutrophil extracellular trap formation and NF − kappa B signalling pathway. Neutrophil extracellular trap formation was predicted to be down-regulated according to the Z score using ingenuity pathway analysis (IPA) (see Supplementary Fig. S3 online). In detail, 4 DEPs are involved in the IL − 17 signaling pathway. Among them, HSP90AA1, S100A7, S100A7L2 were upregulated, while CASP3 was down-regulation. 9 DEPs involved in Neutrophil extracellular trap formation, in which ITGB3 and H2BC20P were upregulated, while IGHM, ELANE, RAC2, AZU1, SYK, IGHV3-49 and NCF1B was down-regulation. In all, five proteins focused on the NF-kappa B signalling pathway. MALT1 significantly increased, whereas IGHM, CD14, SYK, and IGHV3-49 decreased in sPV. We then performed Pearson correlation analyses to explore the associations between DEPs (FC ≥ ± 2.0, P < 0.05) and Psoriasis Area and Severity Index (PASI). The positive and negative correlation data are plotted in Fig. 3 . Specifically, in the sPV group, CFAP47 and OSBPL6 have the highest positive Pearson correlation coefficient with PASI. Other proteins, such as CD36 and CD14, showed no statistical difference despite appearing to be associated with PASI. For the mPV group, the ANO7 and S100A7L2 have the highest p-PCC, while CCNDBP1, GFPT1, YTHDF2, TELO2 and BPI have the highest negative Pearson correlation coefficient (see Supplementary Table S3 online). Protein interaction network showed two sets of molecules interacting with chaperone proteins HSP90AA1 To clearly show the interactions among these DEPs, we constructed an interaction network among molecules using the STRING database (see Supplementary Table S4 online). We found two molecular clusters interacting with chaperone proteins (mainly HSP90AA1). One cluster included CD36 and CD14, which are associated with HSP90AA1 through their effects on LGALS3 or ITGB3. The other contained STK3 and PANX1, which linked with HSP90AA1 through their effects on CASP3 (Fig. 4 ). We further analyzed these proteins using IPA. It identified the top potential upstream up-regulators were TNF (p-value = 6.84e-10, z-score 0.266) and TDP53 (p-value = 6.26e-8, z-score = 0.286), while the top potential down-regulators were Lipopolysaccharide (p-value = 1.12e-6, z-score=-1.494) and YAP1 (p-value = 2.52e-6, z-score=-0.814). TNF was predicted to connect with nine regulators to regulate a set containing 77 dataset molecules downstream (Fig. 5 a). TP53 was connected with nine regulators and predicted to regulate 69 dataset molecules downstream (Fig. 5 b). In contrast, Lipopolysaccharide connected with nine regulators and to regulate 77 dataset protein downstream (Fig. 5 c). YAP1 was predicted to regulate 25 dataset genes downstream contained two regulators (Fig. 5 d). Enriched interaction analysis contains 13 networks; the top was selected based on the score. The highest score network (score 46) was centred on 22 proteins (Fig. 5 e). Pathway analysis showed that the main active pathways were Antimicrobial peptides and PTEN signalling. In contrast, the main inhibitory pathways were the Neutrophil extracellular trap pathway, Neutrophil degranulation, and IL-8 signalling (see Supplementary Fig. S3 online). The expressions of KRT6A were downregulated in sPV by 4D-PRM To validate the results obtained from the DIA, we collected nine new samples and three original samples for validation. In a separate cohort study, we screened thirty-two proteins for further validation using 4D-PRM. Seventeen proteins were quantitated, and the results demonstrated that KRT6A were downregulated in sPV (see Supplementary Table S5 online). Discussion Here, we use DIA-MS to evaluate proteomic differences in psoriatic lesions between sPV and mPV and simultaneously determine some biomarkers associated with disease severity. We quantified 6418 proteins in the DIA-MS test, which was significantly higher than that in a previous proteomic study using LC-MS/MS 17,18 or the Tandem Mass Tags (TMT) approach 19 . These results show that DIA-MS has significantly advanced global protein quantification across multiple samples. Our research identified 173 DEPs in the sPV group compared to the mPV group, which likely plays a crucial role in psoriasis and were associated with disease severity. The main active pathways were antimicrobial peptides and PTEN signalling, while the inhibitory pathways were the neutrophil extracellular trap pathway, neutrophil degranulation, and IL-8 signalling. BP enrichment included several proteins that participate in the defence response to the bacterium, such as defence response to Gram-negative bacterium, antimicrobial humoral immune response mediated by AMP, antibacterial humoral response and response to Lipopolysaccharide. These proteins include AMPs, serine protease, chaperone protein, co-receptor and other molecules. Our work confirms the initial role of bacterial origin elements in psoriasis and the excessive innate immune responses induced by them 4 . Given the initial role of trauma and infection in the onset of psoriasis, it is essential to strengthen skin care, such as enhanced emollients, and to prevent local infections, especially in the progression of psoriasis. Patients should be educated to avoid washing skin lesions with salt or hot water (Especially among the Chinese) to avoid aggravating them. Consistent with previous studies, KEGG enrichment and IPA analysis found that few DEPs predominantly participated in the IL − 17 signalling pathway and NF − kappa B signalling pathway, which plays a vital role in the pathogenesis of psoriasis 20 . In addition to being regulated by upstream regulators, interactions network by STRING found these molecules interacting with each other or chaperone proteins (mainly HSP90AA1) and then regulating specific target proteins involved in cell cycle control and signal transduction or the transcription machinery. All of this indicated the diversity and complexity of the functions of these molecules. S100A7 (Psoriasin) is one of the AMPs belonging to the S100 family, produced by keratinocytes and leukocytes stimulated with IL-17, IL-22 and TNF; therefore, it plays an essential role in innate immunity and angiogenesis 9,21 . In our study, it was upregulated in sPV compared to mPV, which agrees with previous work showing higher serum levels of psoriasin in patients with severe psoriasis 9 and a reduction after treatment with biological agents 15 . KRT6A is one of the stress keratins that regulate keratinocyte differentiation and correlation to proteins that participate in EGFR and retinoic acid signalling 22,23 . Our results demonstrated that it was upregulated in DIA but downregulated in the PRM test, which the conclusions of the previous study can explain that individual stress keratin genes are associated with partially distinct gene networks 24 . Neutrophil elastase (NE) is a primary proteinase in neutrophils that participates in microbicidal activity 25 . Previous research has found that the levels and activity of NE reflect disease state and severity 26 and augmented staining in the low-density granulocytes (LDGs) of psoriasis 27 . However, our results show that NE is down-regulated in sPV. Moreover, SLPI is a reversible NE inhibitor that dynamically controls NE activity. Although SLPI expression decreased in sPV, there was no statistical difference between the two groups. These results indicate that NE has a pleiotropic feature; that is, it has not only antibacterial effects and promotes proinflammatory but also impairs innate immunity 26 . HSP90AA1 is a molecular chaperone which plays an essential role in cell survival, cytokine signalling, and immune response. It can bind bacterial Lipopolysaccharide (LPS) and mediates LPS-induced inflammatory response, including monocyte TNF secretion 28 . Furthermore, HSP90AA1 released by stressed keratinocytes activate DCs to secrete proinflammatory cytokines and AMPs such as S100A7 29 . Despite previous research finding a significantly decreased expression of HSP90AA1 in both keratinocytes and lymphocytes from psoriatic skin 30 , this study shows that it is upregulated in sPV. Our data is consistent with another study showing that it is significantly upregulated in epidermal keratinocytes and mast cells of psoriatic lesions and down-regulated after ustekinumab treatment 29 . CD14 act as a co-receptor for toll-like receptors (TLRs) to activate multiple signal pathways of innate immunity responses to pathogens or tissue injury in diverse cells. This function can be achieved by LBP-dependent combination of the CD14-LPS complex or independently of TLRs 31 . Studies have shown that CD14 + DC3s increased in psoriatic lesions and co-produced IL1B and IL23A 32 ; in contradiction to this, IL-17A blockade induced higher expression of CD1C and CD14, which are markers for CD1c + CD14 + dendritic cell (DC) that suppress antigen-specific T-cell responses, in post-treatment regulatory semimature DCs 33 . Accordingly, CD14 are down-regulated, along with CD1c, in sPV according to our proteomic dataset. These findings indicate that, although the CD14-mediated immune response to pathogenic microorganisms is weakened, the reduction of CD14 on specific dendritic cell subpopulations attenuates the inhibitory effect on T cells, which leads to the persistence and aggravation of inflammation in psoriasis. This study found CD36, another co-receptor associated with the TLR2/TLR6, was upregulated in sPV. Meanwhile, CD36 has a more vigorous activity for modulating TLR4-TLR6 signal transduction than CD14. So, we speculate that the reduction of CD14 may be related to the competition of the CD36 receptor pathway and the regulation of other proteins. IL-33 is a cytokine that signals through the IL1RL1/ST2 receptor, which can activate NF-kappa-B and MAPK signalling pathways 34 and is a proinflammatory molecule and modulator in psoriasis 35–37 . However, other studies found that IL-33 exert anti-inflammatory and protective activities in psoriatic skin 38,39 , which only manifests when the amount of IL-33 is excessive. Considering that IL33 was significantly elevated in sPV, our results agree it is a risk factor for psoriasis. Meanwhile, our results are consistent with previous research that IL-33 can function both as a cytokine and as a nuclear transcriptional regulator 39 since it can interact with chaperone proteins to regulate the transcription machinery. Limitations of the study: ( 1 ) The sample size was relatively small. ( 2 ) DIA did not detect some low-abundance proteins, as we discussed in our previous study. ( 3 ) There are sex differences in patients between the two groups, which may affect the results (Table 1 ). These confounding factors might affect the results. Materials and Methods Patients and samples This study enrolled patients with moderate (5 15) from April 2020 to February 2024 in the Dermatology Hospital of Zhejiang Province. Patients were not receiving treatment at the time of enrollment or receiving treatment other than systematic immunosuppressants or combined with phototherapy. Participants were assessed and sampled at baseline. Other inclusion and exclusion criteria of the patients, obtaining methods and storage conditions of skin specimens, and strategies for evaluating disease severity have been formulated in our previous studies 15 . The study was approved by ethical committees at the Dermatology Hospital of Zhejiang Province (LL-2020-15) and performed according to the Declaration of Helsinki. Patients provided written informed consent before sampling. Proteomic data acquisition For DIA analysis, DIA data analysis, and quality control of proteome data (see Supplementary Fig. S1 online), please refer to the previous study 15 . Part of the proteomic data comes from a two-part prospective cohort study. 4D-PRM Samples were analyzed on nanoElute (Bruker, Bremen, Germany) coupled to a timsTOF Pro (Bruker, Bremen, Germany) equipped with a CaptiveSpray source. Peptides were separated on a 25cm X 75µm analytical column, 1.6µm C18 beads with a packed emitter tip (IonOpticks, Australia). The timsTOF Pro (Bruker, Bremen, Germany) was operated in PRM-PASEF mode. The detection ion mode is positive, the scanning range of the parent ion is 100–1700 m/z, the range of ion mobility 1/K0 is 0.6-1.6V·s/cm2, the Accu time and Ramp time is 50ms, the Lock Duty Cycle is 100%, the Capillary Voltage is 1500V, the Dry Gas speed is 3L/min, the Dry Temp is 180°C. The charge range is 0–5, and the CID collision energy is 10 eV. Bioinformatic analysis GO analysis of the DEPs was analyzed in the GO database and displayed by Cytoscape. Pearson correlation was used to show the correlation between DEPs and clinical severity (PASI). Circus plot was generated using the circle package in R language (version 4.0.1) 40 . The KEGG database was used for pathway analysis. The STRING database performed the interaction network among proteins. Upstream regulator analysis (URA) and interaction analysis were implemented by IPA (Version 24.0.1) (with P 0 or < 0) 41 . Statistical analysis Quantitative data between the two groups were calculated using the Student's t-test. The selection criteria of the DEPs for bioinformatic analysis were cut off with P < 0.05 and FC ≥ 1.5. Statistical analysis was performed in R software (version 4.0.1). Conclusions In conclusion, this study presents a proteomic difference between sPV and mPV in psoriatic lesions. These proteins comprise AMPs, serine protease, chaperone protein, co-receptor and other molecules. At the same time, they were associated with the IL − 17 signalling pathway, Neutrophil extracellular trap formation, Neutrophil degranulation, NF − kappa B signalling pathway, and defence response to a bacterium, which is closely associated with psoriasis pathogenesis. Our data identified eighteen DEPs as biomarkers of disease severity, and it suggested that targeting these molecules and preventing infection may improve the severity and therapeutic efficacy of psoriasis. Declarations Competing interest The authors declare no competing interests. Author Contribution L.L.W. and C.C. contributed equally as co-first authors to the study’s investigation and the writing of the original draft. B.B.X. and N.N.S. conducted the investigation. L.H.H and J.H. were responsible for resource acquisition. Q.D. was pivotal in conceptualization, funding acquisition, methodology development, and project administration. Q.D. and C.C. were instrumental in reviewing and editing the manuscript.All authors reviewed the manuscript. Acknowledgement The authors thank Genechem Co., Ltd. (Shanghai, China) for the mass spectrometric analysis. We thank Dr Sun. for the data computation. Data Availability The data are available from the corresponding author on reasonable request. The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium(https://proteomecentral.proteomexchange.org) via the iProX partner repository with the dataset identifier PXD052886. References Takeshita, J. et al. Psoriasis and comorbid diseases. Journal of the American Academy of Dermatology 76, 377–390, doi: 10.1016/j.jaad.2016.07.064 (2017). Kimball, A. B. et al. Risks of developing psychiatric disorders in pediatric patients with psoriasis. J Am Acad Dermatol 67, 651–657.e651-652, doi: 10.1016/j.jaad.2011.11.948 (2012). Van den Bosch, F. & Coates, L. Clinical management of psoriatic arthritis. Lancet 391, 2285–2294, doi: 10.1016/s0140-6736(18)30949-8 (2018). Griffiths, C. E. M., Armstrong, A. W., Gudjonsson, J. E. & Barker, J. Psoriasis. Lancet 397, 1301–1315, doi: 10.1016/s0140-6736(20)32549-6 (2021). Sutaria, N. & Au, S. C. Failure rates and survival times of systemic and biologic therapies in treating psoriasis: a retrospective study. J Dermatolog Treat 32, 617–620, doi: 10.1080/09546634.2019.1688756 (2021). Elnabawi, Y. A. et al. CCL20 in psoriasis: A potential biomarker of disease severity, inflammation, and impaired vascular health. J Am Acad Dermatol 84, 913–920, doi: 10.1016/j.jaad.2020.10.094 (2021). Glickman, J. W. et al. Cross-sectional study of blood biomarkers of patients with moderate to severe alopecia areata reveals systemic immune and cardiovascular biomarker dysregulation. J Am Acad Dermatol 84, 370–380, doi: 10.1016/j.jaad.2020.04.138 (2021). Navrazhina, K. et al. Large-scale serum analysis identifies unique systemic biomarkers in psoriasis and hidradenitis suppurativa. Br J Dermatol 186, 684–693, doi: 10.1111/bjd.20642 (2022). Maurelli, M. et al. Psoriasin (S100A7) is increased in the serum of patients with moderate-to-severe psoriasis. Br J Dermatol 182, 1502–1503, doi: 10.1111/bjd.18807 (2020). Matsunaga, Y., Hashimoto, Y. & Ishiko, A. Stratum corneum levels of calprotectin proteins S100A8/A9 correlate with disease activity in psoriasis patients. J Dermatol 48, 1518–1525, doi: 10.1111/1346-8138.16032 (2021). Deng, J. et al. Multi-omics approach identifies PI3 as a biomarker for disease severity and hyper-keratinization in psoriasis. J Dermatol Sci 111, 101–108, doi: 10.1016/j.jdermsci.2023.07.005 (2023). Ludwig, C. et al. Data-independent acquisition-based SWATH-MS for quantitative proteomics: a tutorial. Mol Syst Biol 14, e8126, doi: 10.15252/msb.20178126 (2018). Xu, M. et al. In-depth serum proteomics reveals biomarkers of psoriasis severity and response to traditional Chinese medicine. Theranostics 9, 2475–2488, doi: 10.7150/thno.31144 (2019). Foulkes, A. C. et al. A Framework for Multi-Omic Prediction of Treatment Response to Biologic Therapy for Psoriasis. J Invest Dermatol 139, 100–107, doi: 10.1016/j.jid.2018.04.041 (2019). Dong, Q. et al. IL-17A and TNF-α inhibitors induce multiple molecular changes in psoriasis. Front Immunol 13, 1015182, doi: 10.3389/fimmu.2022.1015182 (2022). Zhou, H. et al. Analysis of the mechanism of Buyang Huanwu Decoction against cerebral ischemia-reperfusion by multi-omics. J Ethnopharmacol 305, 116112, doi: 10.1016/j.jep.2022.116112 (2023). Swindell, W. R. et al. Proteogenomic analysis of psoriasis reveals discordant and concordant changes in mRNA and protein abundance. Genome Med 7, 86, doi: 10.1186/s13073-015-0208-5 (2015). Sobolev, V. V. et al. LC-MS/MS analysis of lesional and normally looking psoriatic skin reveals significant changes in protein metabolism and RNA processing. PLoS One 16, e0240956, doi: 10.1371/journal.pone.0240956 (2021). Wang, W. et al. Proteomic analysis of psoriatic skin lesions in a Chinese population. J Proteomics 240, 104207, doi: 10.1016/j.jprot.2021.104207 (2021). Yan, K. X. et al. iTRAQ-based quantitative proteomics reveals biomarkers/pathways in psoriasis that can predict the efficacy of methotrexate. J Eur Acad Dermatol Venereol 36, 1784–1795, doi: 10.1111/jdv.18292 (2022). Vegfors, J., Ekman, A. K., Stoll, S. W., Bivik Eding, C. & Enerbäck, C. Psoriasin (S100A7) promotes stress-induced angiogenesis. Br J Dermatol 175, 1263–1273, doi: 10.1111/bjd.14718 (2016). Chiang, C. Y. et al. SH3BGRL3 Protein as a Potential Prognostic Biomarker for Urothelial Carcinoma: A Novel Binding Partner of Epidermal Growth Factor Receptor. Clin Cancer Res 21, 5601–5611, doi: 10.1158/1078-0432.Ccr-14-3308 (2015). Zhang, S. et al. Differential CRABP-II and FABP5 expression patterns and implications for medulloblastoma retinoic acid sensitivity. RSC Adv 8, 14048–14055, doi: 10.1039/c8ra00744f (2018). Cohen, E. et al. Significance of stress keratin expression in normal and diseased epithelia. iScience 27, 108805, doi: 10.1016/j.isci.2024.108805 (2024). Zeng, W., Song, Y., Wang, R., He, R. & Wang, T. Neutrophil elastase: From mechanisms to therapeutic potential. J Pharm Anal 13, 355–366, doi: 10.1016/j.jpha.2022.12.003 (2023). Voynow, J. A. & Shinbashi, M. Neutrophil Elastase and Chronic Lung Disease. Biomolecules 11, doi: 10.3390/biom11081065 (2021). Skrzeczynska-Moncznik, J. et al. Differences in Staining for Neutrophil Elastase and its Controlling Inhibitor SLPI Reveal Heterogeneity among Neutrophils in Psoriasis. J Invest Dermatol 140, 1371–1378.e1373, doi: 10.1016/j.jid.2019.12.015 (2020). Triantafilou, K., Triantafilou, M. & Dedrick, R. L. A CD14-independent LPS receptor cluster. Nat Immunol 2, 338–345, doi: 10.1038/86342 (2001). Kakeda, M., Arock, M., Schlapbach, C. & Yawalkar, N. Increased expression of heat shock protein 90 in keratinocytes and mast cells in patients with psoriasis. J Am Acad Dermatol 70, 683–690.e681, doi: 10.1016/j.jaad.2013.12.002 (2014). Gęgotek, A., Domingues, P., Wroński, A., Ambrożewicz, E. & Skrzydlewska, E. The Proteomic Profile of Keratinocytes and Lymphocytes in Psoriatic Patients. Proteomics Clin Appl 13, e1800119, doi: 10.1002/prca.201800119 (2019). Sharygin, D., Koniaris, L. G., Wells, C., Zimmers, T. A. & Hamidi, T. Role of CD14 in human disease. Immunology 169, 260–270, doi: 10.1111/imm.13634 (2023). Nakamizo, S. et al. Single-cell analysis of human skin identifies CD14 + type 3 dendritic cells co-producing IL1B and IL23A in psoriasis. J Exp Med 218, doi: 10.1084/jem.20202345 (2021). Kim, J. et al. Multi-omics segregate different transcriptomic impacts of anti-IL-17A blockade on type 17 T-cells and regulatory immune cells in psoriasis skin. Front Immunol 14, 1250504, doi: 10.3389/fimmu.2023.1250504 (2023). Schmitz, J. et al. IL-33, an interleukin-1-like cytokine that signals via the IL-1 receptor-related protein ST2 and induces T helper type 2-associated cytokines. Immunity 23, 479–490, doi: 10.1016/j.immuni.2005.09.015 (2005). Balato, A. et al. IL-33 is secreted by psoriatic keratinocytes and induces pro-inflammatory cytokines via keratinocyte and mast cell activation. Exp Dermatol 21, 892–894, doi: 10.1111/exd.12027 (2012). Griesenauer, B. & Paczesny, S. The ST2/IL-33 Axis in Immune Cells during Inflammatory Diseases. Front Immunol 8, 475, doi: 10.3389/fimmu.2017.00475 (2017). Zeng, F. et al. An Autocrine Circuit of IL-33 in Keratinocytes Is Involved in the Progression of Psoriasis. J Invest Dermatol 141, 596–606.e597, doi: 10.1016/j.jid.2020.07.027 (2021). Chen, Z. et al. Interleukin-33 alleviates psoriatic inflammation by suppressing the T helper type 17 immune response. Immunology 160, 382–392, doi: 10.1111/imm.13203 (2020). Dragan, M. et al. Epidermis-Intrinsic Transcription Factor Ovol1 Coordinately Regulates Barrier Maintenance and Neutrophil Accumulation in Psoriasis-Like Inflammation. J Invest Dermatol 142, 583–593.e585, doi: 10.1016/j.jid.2021.08.397 (2022). Krzywinski, M. et al. Circos: an information aesthetic for comparative genomics. Genome Res 19, 1639–1645, doi: 10.1101/gr.092759.109 (2009). Krämer, A., Green, J., Pollard, J., Jr. & Tugendreich, S. Causal analysis approaches in Ingenuity Pathway Analysis. Bioinformatics 30, 523–530, doi: 10.1093/bioinformatics/btt703 (2014). Additional Declarations No competing interests reported. Supplementary Files SupplementaryFigureS1.jpg SupplementaryFigureS2.jpg SupplementaryFigureS3.jpg SupplementaryTableS1.xlsx SupplementaryTableS2.xlsx SupplementaryTableS3.xlsx SupplementaryTableS4.xlsx SupplementaryTableS5.xlsx Cite Share Download PDF Status: Published Journal Publication published 27 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 09 Oct, 2024 Reviews received at journal 08 Oct, 2024 Reviews received at journal 26 Sep, 2024 Reviews received at journal 23 Sep, 2024 Reviewers agreed at journal 23 Sep, 2024 Reviews received at journal 20 Sep, 2024 Reviews received at journal 13 Sep, 2024 Reviewers agreed at journal 13 Sep, 2024 Reviewers agreed at journal 11 Sep, 2024 Reviewers agreed at journal 11 Sep, 2024 Reviewers agreed at journal 11 Sep, 2024 Reviewers invited by journal 11 Sep, 2024 Editor assigned by journal 11 Sep, 2024 Editor invited by journal 15 Jul, 2024 Submission checks completed at journal 12 Jul, 2024 First submitted to journal 09 Jul, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4710909","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":335799925,"identity":"c5df4c8b-cb90-4c06-8744-881db91795b5","order_by":0,"name":"Lingling Wu","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Lingling","middleName":"","lastName":"Wu","suffix":""},{"id":335799926,"identity":"4e95cfbe-e793-4b3d-8df9-0824e9b49065","order_by":1,"name":"Chen Cen","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Chen","middleName":"","lastName":"Cen","suffix":""},{"id":335799927,"identity":"736638e2-7c49-4e90-aa23-ac475d619c80","order_by":2,"name":"Bibo Xie","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Bibo","middleName":"","lastName":"Xie","suffix":""},{"id":335799929,"identity":"7f3d0592-2c73-4ff5-82bd-3f49f7c1576c","order_by":3,"name":"Lihua Hu","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Lihua","middleName":"","lastName":"Hu","suffix":""},{"id":335799930,"identity":"90455254-ec9b-4d6e-80c1-adb56ab22929","order_by":4,"name":"Jia Huang","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Jia","middleName":"","lastName":"Huang","suffix":""},{"id":335799931,"identity":"5efc737b-7961-4c55-8e69-4177fee9a765","order_by":5,"name":"Ningning Shen","email":"","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":false,"prefix":"","firstName":"Ningning","middleName":"","lastName":"Shen","suffix":""},{"id":335799933,"identity":"70c63f19-cf07-4111-a7a0-e09c2d429973","order_by":6,"name":"Qiang Dong","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABDUlEQVRIiWNgGAWjYBACfmYgwfgDwpFgqACS7ECBBjxaJJtBWnpgWs4wMPAwE9BicACkpQ2qBcQgrOU487OHX9ts8uQdmA/e5p1nk7ifmfngwxkMdnK6OPQZHGYzN5ZtSys2PMCWbM27LS2xh5kt2XADQ7Kx2QFcWhjMpCXbDidubOAxk+bddhiohcdM8gHDgcRtOLSYHWb/BtXC/02adw4RWowPAxV8BGqZz8DDJs3bANWyAY8WyWaeMmnGnrTEDcxsxpZzjqUZ9xwG+mWGAW6/8Psf3yb584dN4vz25oc33tTYyLa3Nx982FNhJ4dLCwgw80DCASVYcCsHAXB6kW/Ar2gUjIJRMApGMAAAQ2laqusJp2wAAAAASUVORK5CYII=","orcid":"","institution":"Dermatology Hospital of Zhejiang Province","correspondingAuthor":true,"prefix":"","firstName":"Qiang","middleName":"","lastName":"Dong","suffix":""}],"badges":[],"createdAt":"2024-07-09 09:39:06","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4710909/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4710909/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-87252-9","type":"published","date":"2025-01-27T15:57:53+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":61883913,"identity":"fff3e54d-061d-4bfc-b123-8afb151418e1","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"jpg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":282852,"visible":true,"origin":"","legend":"\u003cp\u003eBox plot analysis of nine proteins with the highest ±FC in the upregulated and down-regulated DEPs, respectively. (\u003cstrong\u003ea\u003c/strong\u003e)Nine proteins (OSBPL6, CYFIP2, MYOCD, AGO3, DCD, PCBP4, LRIF1, DLG5 and KRT15) with the highest +FC in the up-regulated DEPs. (\u003cstrong\u003eb\u003c/strong\u003e)Inversely, the nine proteins with the highest -FC were MTMR10, CCNDBP1, STK3, LAMP1, UBE2D1, APBB3, BPI, SULT1B1 and IGHM in the down-regulated DEPs. The statistical analysis was performed using Student's t-test with a p-value ≤ 0.05. *, ** and *** represent the p-values less than 0.05, 0.005 and 0.0005, respectively.\u003c/p\u003e","description":"","filename":"1.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/1fa7e403627f5999d101663a.jpg"},{"id":61884762,"identity":"03149572-fbcb-40d6-8076-0ed314e02a0e","added_by":"auto","created_at":"2024-08-06 16:16:10","extension":"jpg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":326784,"visible":true,"origin":"","legend":"\u003cp\u003eGO and KEGG enrichment analyses were performed in 173 DEPs (FC ≥±1.5, P-value \u0026lt;0.05). Dotplot displayed the top 10 significant difference GO terms (\u003cstrong\u003ea\u003c/strong\u003e) and the top 20 enriched pathways in KEGG pathway analysis (\u003cstrong\u003eb\u003c/strong\u003e).\u003c/p\u003e","description":"","filename":"2.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/f47a42ed9a0405a8774d4555.jpg"},{"id":61883924,"identity":"967638e9-a0f6-442b-8224-419fa3fb3956","added_by":"auto","created_at":"2024-08-06 16:08:12","extension":"jpg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":69037,"visible":true,"origin":"","legend":"\u003cp\u003eCorrelation between DEPs (FC ≥±2.0, P-value \u0026lt;0.05) and clinical PASI score. Circos plot presenting the Pearson correlation between DEPs and the PASI score (|cor|\u0026gt;0.6, p-value\u0026lt;0.05). Red ribbons indicate positive Pearson correlation coefficients. Green ribbons represent negative Pearson correlation coefficients. The width of the ribbons indicates the correlation value.\u003c/p\u003e","description":"","filename":"Figure3.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/21fa36b37774dd14f730946c.jpg"},{"id":61883915,"identity":"2f3091ac-96e0-4c67-b050-8111dfca5c0d","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"jpg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":188209,"visible":true,"origin":"","legend":"\u003cp\u003eProtein-protein interaction networks of DEPs (FC ≥±1.5, P-value \u0026lt;0.05) were obtained from STRING (Confidence score \u0026gt;0.5). Cytoscape (Version 3.10.2) was used to visualize the networks. Nodes represent proteins, and edges represent the interaction between them. Edge width corresponds to the combined score of specific protein pairs. A larger edge width indicated a higher score. PPI: protein-protein interaction.\u003c/p\u003e","description":"","filename":"Figure4.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/8c71bf6ebb4bb2a8ed88c218.jpg"},{"id":61883911,"identity":"7abf3e5b-8488-4da7-b70b-4f4fea904569","added_by":"auto","created_at":"2024-08-06 16:08:09","extension":"jpg","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":1370119,"visible":true,"origin":"","legend":"\u003cp\u003eUpstream regulator analysis (URA) of 173 DEPs (FC ≥±1.5, P-value \u0026lt;0.05) according to Z-score using ingenuity pathway analysis (IPA). It determines likely upstream regulators that are connected to data set genes through a set of direct or indirect relationships. The top potential upstream up-regulators were TNF (\u003cstrong\u003ea\u003c/strong\u003e) and TDP53 (\u003cstrong\u003eb\u003c/strong\u003e), while the top potential down-regulators were Lipopolysaccharide (\u003cstrong\u003ec\u003c/strong\u003e) and YAP1 (\u003cstrong\u003ed\u003c/strong\u003e). Causal network analysis of DEPs using IPA. The highest-score network is displayed. The relationship among molecules is represented by lines (solid lines for direct association and dotted lines for indirect association) (\u003cstrong\u003ee\u003c/strong\u003e).\u003c/p\u003e","description":"","filename":"5.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/c9c300d0c87bc6db03673aed.jpg"},{"id":75352234,"identity":"a4b8ad6e-1940-4fb5-b779-5d3c1ec94a86","added_by":"auto","created_at":"2025-02-03 16:13:32","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":3015086,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/7763e3ee-6fec-47b5-ae56-5bd4f5c5f568.pdf"},{"id":61883925,"identity":"82f008a5-92e3-48a4-b27d-3b298c07c126","added_by":"auto","created_at":"2024-08-06 16:08:12","extension":"jpg","order_by":13,"title":"","display":"","copyAsset":false,"role":"supplement","size":203733,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryFigureS1.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/bc579bb3dc02403e217e4fa0.jpg"},{"id":61884765,"identity":"48271e09-2413-46e2-b164-a3259e1fb91b","added_by":"auto","created_at":"2024-08-06 16:16:10","extension":"jpg","order_by":14,"title":"","display":"","copyAsset":false,"role":"supplement","size":125654,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryFigureS2.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/f49864bacbcb0c4fa558a611.jpg"},{"id":61883916,"identity":"8015d3d4-ad20-4d41-b95f-cda230758a9b","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"jpg","order_by":15,"title":"","display":"","copyAsset":false,"role":"supplement","size":1547626,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryFigureS3.jpg","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/8a3fafd55516dc20fc532dc6.jpg"},{"id":61883920,"identity":"5d6257f3-493a-47ca-b2bd-256ca36a68b7","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"xlsx","order_by":16,"title":"","display":"","copyAsset":false,"role":"supplement","size":45730,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryTableS1.xlsx","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/b1004c09cdae28956b35f76c.xlsx"},{"id":61883918,"identity":"1c103032-9213-474e-9299-5ad0c1c7f923","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"xlsx","order_by":17,"title":"","display":"","copyAsset":false,"role":"supplement","size":33085,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryTableS2.xlsx","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/3eb8bd6a3c698f30af3151e5.xlsx"},{"id":61883914,"identity":"8ac6827c-910d-495a-8148-1a3f22ca59cc","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"xlsx","order_by":18,"title":"","display":"","copyAsset":false,"role":"supplement","size":15018,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryTableS3.xlsx","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/ed556fba5bb02e955a79bae0.xlsx"},{"id":61883921,"identity":"5f597995-73c1-44b9-beda-d8d722ee66e7","added_by":"auto","created_at":"2024-08-06 16:08:10","extension":"xlsx","order_by":19,"title":"","display":"","copyAsset":false,"role":"supplement","size":20633,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryTableS4.xlsx","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/5b898167ef8f60f667b5f6a2.xlsx"},{"id":61884764,"identity":"db735a68-cb6c-4129-8456-2a960adc2011","added_by":"auto","created_at":"2024-08-06 16:16:10","extension":"xlsx","order_by":20,"title":"","display":"","copyAsset":false,"role":"supplement","size":15810,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryTableS5.xlsx","url":"https://assets-eu.researchsquare.com/files/rs-4710909/v1/7cb8d4d8550be460e4a5697a.xlsx"}],"financialInterests":"No competing interests reported.","formattedTitle":"Cross-sectional study of proteomic differences between moderate and severe psoriasis","fulltext":[{"header":"Introduction","content":"\u003cp\u003ePsoriasis vulgaris (PV) is a common, chronic and immune-related skin disease which can also cause multisystem damage like depression (especially in young people) \u003csup\u003e1,2\u003c/sup\u003eand psoriatic arthritis\u003csup\u003e3\u003c/sup\u003e. Recent research has focused on the crucial roles of immune molecules in PV, such as IL-17A/F, IL-23, and TNF-α\u003csup\u003e4\u003c/sup\u003e. Biological agents have significantly improved psoriasis efficacy, but a loss of effectiveness\u003csup\u003e5\u003c/sup\u003e often occurs in clinical practice. Therefore, it is necessary to explore this disease further to discover more critical immune molecules involved in pathogenesis and develop new drugs.\u003c/p\u003e \u003cp\u003eIn the last decade, proteomic approaches have been used to identify and characterize proteins that participated in the pathogenesis of psoriasis or other skin diseases. For instance, recent studies have shown the circulating proteomic landscape of psoriasis and hidradenitis suppurativa (HS) using a smaller Olink proteomic platform\u003csup\u003e6,7\u003c/sup\u003e. In a large-scale proteomic study using a novel extended Olink platform assessing 1536 biomarkers, Navrazhina K \u003cem\u003eet al\u003c/em\u003e. found that HS presents a more extraordinary serum inflammatory burden\u003csup\u003e8\u003c/sup\u003e. The above results suggest that detecting more biomarkers could help us discover critical immune molecules and deepen our understanding of disease pathogenesis.\u003c/p\u003e \u003cp\u003eSeveral studies have identified proteins associated with the severity of psoriasis, such as some Antimicrobial peptides (AMPs) (S100A7, S100A8, S100A9 and PI3) \u003csup\u003e9\u0026ndash;11\u003c/sup\u003e. Still, they mainly evaluate blood samples or the stratum corneum (SC) cells, or the platforms used in these studies have limited ability to detect more proteins.\u003c/p\u003e \u003cp\u003eData-independent acquisition mass spectrometry (DIA-MS) is a proteomic technology that combines deep proteome coverage capabilities with quantitative consistency and accuracy \u003csup\u003e12\u003c/sup\u003e, which has been successfully used for the investigation of skin disease\u003csup\u003e13,14\u003c/sup\u003e, as described in our previous study\u003csup\u003e15\u003c/sup\u003e. Until now, no studies have directly compared proteomic differences between severe and moderate psoriasis in psoriatic lesions. Here, we used DIA-MS to characterize the proteomic differences between severe PV (sPV) and moderate PV (mPV) in psoriatic lesions and explore biomarkers associated with disease severity. Finally, we validated selected differentially expressed proteins (DEPs) with 4D-parallel reaction monitoring (4D-PRM) technology\u003csup\u003e16\u003c/sup\u003e.\u003c/p\u003e"},{"header":"Results","content":"\u003cdiv id=\"Sec3\" class=\"Section2\"\u003e \u003ch2\u003eQuantitative analysis of proteins in psoriatic lesions using DIA\u003c/h2\u003e \u003cp\u003eFor DIA detection, fifteen samples were collected from patients with sPV(n\u0026thinsp;=\u0026thinsp;7) and mPV(n\u0026thinsp;=\u0026thinsp;8). Then, 4D-PRM was performed for validation in twelve newly collected cases. The characteristics of included patients are shown in Table\u0026nbsp;\u003cspan refid=\"Tab1\" class=\"InternalRef\"\u003e1\u003c/span\u003e.\u003c/p\u003e \u003cp\u003e \u003cdiv class=\"gridtable\"\u003e\u003ctable float=\"Yes\" id=\"Tab1\" border=\"1\"\u003e \u003ccaption language=\"En\"\u003e \u003cdiv class=\"CaptionNumber\"\u003eTable 1\u003c/div\u003e \u003cdiv class=\"CaptionContent\"\u003e \u003cp\u003eBaseline Characteristics of Psoriasis Patients\u003c/p\u003e \u003c/div\u003e \u003c/caption\u003e \u003ccolgroup cols=\"5\"\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c1\" colnum=\"1\"\u003e\u003c/div\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c2\" colnum=\"2\"\u003e\u003c/div\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c3\" colnum=\"3\"\u003e\u003c/div\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c4\" colnum=\"4\"\u003e\u003c/div\u003e \u003cdiv align=\"left\" class=\"colspec\" colname=\"c5\" colnum=\"5\"\u003e\u003c/div\u003e \u003cthead\u003e \u003ctr\u003e \u003cth align=\"left\" colname=\"c1\"\u003e\u0026nbsp;\u003c/th\u003e \u003cth align=\"left\" colspan=\"2\" nameend=\"c3\" namest=\"c2\"\u003e \u003cp\u003eDIA test\u003c/p\u003e \u003c/th\u003e \u003cth align=\"left\" colspan=\"2\" nameend=\"c5\" namest=\"c4\"\u003e \u003cp\u003ePRM validation\u003c/p\u003e \u003c/th\u003e \u003c/tr\u003e \u003c/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eVariables\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003esPV groups(n\u0026thinsp;=\u0026thinsp;7)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003emPV groups(n\u0026thinsp;=\u0026thinsp;8)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003esPV groups(n\u0026thinsp;=\u0026thinsp;6)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003emPV groups(n\u0026thinsp;=\u0026thinsp;6)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eSex- no. (%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMale\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e6(85.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e4(50.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e2(33.3%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eFemale\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e1(14.3%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e4(50.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e1(16.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e4(66.7%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eAge, year\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMean\u0026thinsp;\u0026plusmn;\u0026thinsp;SD.\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e51.6\u0026thinsp;\u0026plusmn;\u0026thinsp;16.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e42.4\u0026thinsp;\u0026plusmn;\u0026thinsp;15.5\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e48.8\u0026thinsp;\u0026plusmn;\u0026thinsp;14.3\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e33.5\u0026thinsp;\u0026plusmn;\u0026thinsp;7.9\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMedian (IQR)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e47.0(34.0\u0026ndash;66.0)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e41.0(29.3\u0026ndash;59.0)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e45.5(36.8\u0026ndash;59.8)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e33.0(28.8\u0026ndash;38.5)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eRange\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e34.0\u0026ndash;76.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e22.0\u0026ndash;64.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e36.0\u0026ndash;74.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e22.0\u0026ndash;46.0\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eCourse, year\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMean\u0026thinsp;\u0026plusmn;\u0026thinsp;SD.\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e24.3\u0026thinsp;\u0026plusmn;\u0026thinsp;16.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e13.8\u0026thinsp;\u0026plusmn;\u0026thinsp;14.9\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e11.3\u0026thinsp;\u0026plusmn;\u0026thinsp;8.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e4.6\u0026thinsp;\u0026plusmn;\u0026thinsp;3.9\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMedian (IQR)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e21.5(11.0-40.8)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e10.0(2.3\u0026ndash;20.3)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e8.5(6.0-15.8)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e4.0(0.9-8.0)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eRange\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e6.0\u0026ndash;50.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e0.5\u0026ndash;46.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e6.0\u0026ndash;27.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e0.5\u0026ndash;11.0\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003ePrevious treatment - no. (%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eTopical therapy\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e6(85.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e8(100.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eSystemic therapy\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e7(100.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e6(75.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e4(66.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e4(66.7%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003ePhototherapy\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e4(57.1%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e3(37.5%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e1(16.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e2(33.3%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eBiologic therapy\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e2(28.6%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e1(12.5%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e0(0.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e0(0.0%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eFamily\u0026nbsp;history - no. (%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eYes\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e3(42.9%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e1(12.5%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e3(50.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e1(16.7%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eNo\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e4(57.1%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e7(87.5%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e3(50.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eComorbidity- no. (%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eYes\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e4(57.1%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e0(0.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e1(16.7%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e1(16.7%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eNo\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e3(42.9%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e8(100.0%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e5(83.3%)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003ePASI (0 weeks), score\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMean\u0026thinsp;\u0026plusmn;\u0026thinsp;SD.\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e24.6\u0026thinsp;\u0026plusmn;\u0026thinsp;5.8\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e11.2\u0026thinsp;\u0026plusmn;\u0026thinsp;2.4\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e30.6\u0026thinsp;\u0026plusmn;\u0026thinsp;10.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e9.0\u0026thinsp;\u0026plusmn;\u0026thinsp;2.2\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eMedian (IQR)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e21.0(20.1\u0026ndash;31.5)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e11.6(10.0-12.2)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e25.8(22.8\u0026ndash;43.6)\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e8.8(7.0-11.2)\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colname=\"c1\"\u003e \u003cp\u003eRange\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c2\"\u003e \u003cp\u003e19.1\u0026ndash;33.3\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c3\"\u003e \u003cp\u003e6.8\u0026ndash;15.0\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c4\"\u003e \u003cp\u003e20.2\u0026ndash;44.6\u003c/p\u003e \u003c/td\u003e \u003ctd align=\"left\" colname=\"c5\"\u003e \u003cp\u003e6.8\u0026ndash;11.8\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" colspan=\"5\" nameend=\"c5\" namest=\"c1\"\u003e \u003cp\u003eno. (%), number; SD, standard deviation; IQR, interquartile range.\u003c/p\u003e \u003c/td\u003e \u003c/tr\u003e \u003c/tbody\u003e \u003c/colgroup\u003e \u003c/table\u003e\u003c/div\u003e \u003c/p\u003e \u003cp\u003eA total of 6418 proteins were quantified in the proteomic experiment, with a false discovery rate (FDR) of less than 1% at both the peptide and protein levels. Protein identified in technical replicates and control samples showed a relatively low coefficient variance (CV) (see Supplementary Fig. \u003cspan refid=\"MOESM2\" class=\"InternalRef\"\u003eS2\u003c/span\u003e online).\u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec4\" class=\"Section2\"\u003e \u003ch2\u003eBioinformatics analysis and functional description of DEPs in moderate and severe psoriasis\u003c/h2\u003e \u003cp\u003e173 DEPs were significantly changed in the sPV group compared to the mPV group (FC\u0026thinsp;\u0026ge;\u0026thinsp;\u0026plusmn;\u0026thinsp;1.5, P\u0026thinsp;\u0026lt;\u0026thinsp;0.05). Among them, 85 proteins were upregulated, while 88 were down-regulated (see Supplementary Table \u003cspan refid=\"MOESM1\" class=\"InternalRef\"\u003eS1\u003c/span\u003e online). Nine proteins with the highest FC were OSBPL6, CYFIP2, MYOCD, AGO3, DCD, PCBP4, LRIF1, DLG5 and KRT15 in the upregulated proteins. Among the down-regulated proteins, nine proteins with the highest -FC were MTMR10, CCNDBP1, STK3, LAMP1, UBE2D1, APBB3, BPI, SULT1B1 and IGHM (Fig.\u0026nbsp;\u003cspan refid=\"Fig1\" class=\"InternalRef\"\u003e1\u003c/span\u003e).\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003eTo further investigate the molecular functions of these DEPs, we performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis in the sPV and mPV groups. The top 10 significant difference clusters of GO terms were displayed in Fig.\u0026nbsp;\u003cspan refid=\"Fig2\" class=\"InternalRef\"\u003e2\u003c/span\u003ea. Biological process enrichment included defence response to Gram-negative bacterium, antimicrobial humoral immune response mediated by antimicrobial peptide, antibacterial humoral response, positive regulation of stem cell proliferation, nucleotide-excision repair, DNA incision, regulation of protein tyrosine kinase activity, positive regulation of catalytic activity, response to Lipopolysaccharide, regulation of phagocytosis and sequestering of metal ion.\u003c/p\u003e \u003cp\u003eThe top 20 RichFactor of enriched pathways were illustrated in Fig.\u0026nbsp;\u003cspan refid=\"Fig2\" class=\"InternalRef\"\u003e2\u003c/span\u003eb. The top 10 of KEGG enrichment included Caffeine metabolism, RNA polymerase, Cytosolic DNA-sensing pathway, Hematopoietic cell lineage, IL-17 signalling pathway, Neutrophil extracellular trap formation, Insulin resistance, Natural killer cell mediated cytotoxicity, B cell receptor signalling pathway and NF-kappa B signalling pathway.\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec5\" class=\"Section2\"\u003e \u003ch2\u003eIdentification of proteins and pathways associated with psoriasis pathogenesis and disease severity\u003c/h2\u003e \u003cp\u003eAs shown in Supplementary Table \u003cspan refid=\"MOESM2\" class=\"InternalRef\"\u003eS2\u003c/span\u003e, DEPs in the sPV group, compared to the mPV group, participated in the IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signalling pathway, Neutrophil extracellular trap formation and NF\u0026thinsp;\u0026minus;\u0026thinsp;kappa B signalling pathway. Neutrophil extracellular trap formation was predicted to be down-regulated according to the Z score using ingenuity pathway analysis (IPA) (see Supplementary Fig. \u003cspan refid=\"MOESM3\" class=\"InternalRef\"\u003eS3\u003c/span\u003e online). In detail, 4 DEPs are involved in the IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signaling pathway. Among them, HSP90AA1, S100A7, S100A7L2 were upregulated, while CASP3 was down-regulation. 9 DEPs involved in Neutrophil extracellular trap formation, in which ITGB3 and H2BC20P were upregulated, while IGHM, ELANE, RAC2, AZU1, SYK, IGHV3-49 and NCF1B was down-regulation. In all, five proteins focused on the NF-kappa B signalling pathway. MALT1 significantly increased, whereas IGHM, CD14, SYK, and IGHV3-49 decreased in sPV.\u003c/p\u003e \u003cp\u003eWe then performed Pearson correlation analyses to explore the associations between DEPs (FC\u0026thinsp;\u0026ge;\u0026thinsp;\u0026plusmn;\u0026thinsp;2.0, P\u0026thinsp;\u0026lt;\u0026thinsp;0.05) and Psoriasis Area and Severity Index (PASI). The positive and negative correlation data are plotted in Fig.\u0026nbsp;\u003cspan refid=\"Fig3\" class=\"InternalRef\"\u003e3\u003c/span\u003e. Specifically, in the sPV group, CFAP47 and OSBPL6 have the highest positive Pearson correlation coefficient with PASI. Other proteins, such as CD36 and CD14, showed no statistical difference despite appearing to be associated with PASI. For the mPV group, the ANO7 and S100A7L2 have the highest p-PCC, while CCNDBP1, GFPT1, YTHDF2, TELO2 and BPI have the highest negative Pearson correlation coefficient (see Supplementary Table \u003cspan refid=\"MOESM3\" class=\"InternalRef\"\u003eS3\u003c/span\u003e online).\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec6\" class=\"Section2\"\u003e \u003ch2\u003eProtein interaction network showed two sets of molecules interacting with chaperone proteins HSP90AA1\u003c/h2\u003e \u003cp\u003eTo clearly show the interactions among these DEPs, we constructed an interaction network among molecules using the STRING database (see Supplementary Table \u003cspan refid=\"MOESM4\" class=\"InternalRef\"\u003eS4\u003c/span\u003e online). We found two molecular clusters interacting with chaperone proteins (mainly HSP90AA1). One cluster included CD36 and CD14, which are associated with HSP90AA1 through their effects on LGALS3 or ITGB3. The other contained STK3 and PANX1, which linked with HSP90AA1 through their effects on CASP3 (Fig.\u0026nbsp;\u003cspan refid=\"Fig4\" class=\"InternalRef\"\u003e4\u003c/span\u003e).\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003cp\u003eWe further analyzed these proteins using IPA. It identified the top potential upstream up-regulators were TNF (p-value\u0026thinsp;=\u0026thinsp;6.84e-10, z-score 0.266) and TDP53 (p-value\u0026thinsp;=\u0026thinsp;6.26e-8, z-score\u0026thinsp;=\u0026thinsp;0.286), while the top potential down-regulators were Lipopolysaccharide (p-value\u0026thinsp;=\u0026thinsp;1.12e-6, z-score=-1.494) and YAP1 (p-value\u0026thinsp;=\u0026thinsp;2.52e-6, z-score=-0.814). TNF was predicted to connect with nine regulators to regulate a set containing 77 dataset molecules downstream (Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e5\u003c/span\u003ea). TP53 was connected with nine regulators and predicted to regulate 69 dataset molecules downstream (Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e5\u003c/span\u003eb). In contrast, Lipopolysaccharide connected with nine regulators and to regulate 77 dataset protein downstream (Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e5\u003c/span\u003ec). YAP1 was predicted to regulate 25 dataset genes downstream contained two regulators (Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e5\u003c/span\u003ed).\u003c/p\u003e \u003cp\u003eEnriched interaction analysis contains 13 networks; the top was selected based on the score. The highest score network (score 46) was centred on 22 proteins (Fig.\u0026nbsp;\u003cspan refid=\"Fig5\" class=\"InternalRef\"\u003e5\u003c/span\u003ee). Pathway analysis showed that the main active pathways were Antimicrobial peptides and PTEN signalling. In contrast, the main inhibitory pathways were the Neutrophil extracellular trap pathway, Neutrophil degranulation, and IL-8 signalling (see Supplementary Fig. \u003cspan refid=\"MOESM3\" class=\"InternalRef\"\u003eS3\u003c/span\u003e online).\u003c/p\u003e \u003cp\u003e \u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec7\" class=\"Section2\"\u003e \u003ch2\u003eThe expressions of KRT6A were downregulated in sPV by 4D-PRM\u003c/h2\u003e \u003cp\u003e To validate the results obtained from the DIA, we collected nine new samples and three original samples for validation. In a separate cohort study, we screened thirty-two proteins for further validation using 4D-PRM. Seventeen proteins were quantitated, and the results demonstrated that KRT6A were downregulated in sPV (see Supplementary Table \u003cspan refid=\"MOESM5\" class=\"InternalRef\"\u003eS5\u003c/span\u003e online).\u003c/p\u003e \u003c/div\u003e"},{"header":"Discussion","content":"\u003cp\u003eHere, we use DIA-MS to evaluate proteomic differences in psoriatic lesions between sPV and mPV and simultaneously determine some biomarkers associated with disease severity. We quantified 6418 proteins in the DIA-MS test, which was significantly higher than that in a previous proteomic study using LC-MS/MS\u003csup\u003e17,18\u003c/sup\u003e or the Tandem Mass Tags (TMT) approach\u003csup\u003e19\u003c/sup\u003e. These results show that DIA-MS has significantly advanced global protein quantification across multiple samples. Our research identified 173 DEPs in the sPV group compared to the mPV group, which likely plays a crucial role in psoriasis and were associated with disease severity. The main active pathways were antimicrobial peptides and PTEN signalling, while the inhibitory pathways were the neutrophil extracellular trap pathway, neutrophil degranulation, and IL-8 signalling.\u003c/p\u003e \u003cp\u003eBP enrichment included several proteins that participate in the defence response to the bacterium, such as defence response to Gram-negative bacterium, antimicrobial humoral immune response mediated by AMP, antibacterial humoral response and response to Lipopolysaccharide. These proteins include AMPs, serine protease, chaperone protein, co-receptor and other molecules. Our work confirms the initial role of bacterial origin elements in psoriasis and the excessive innate immune responses induced by them\u003csup\u003e4\u003c/sup\u003e. Given the initial role of trauma and infection in the onset of psoriasis, it is essential to strengthen skin care, such as enhanced emollients, and to prevent local infections, especially in the progression of psoriasis. Patients should be educated to avoid washing skin lesions with salt or hot water (Especially among the Chinese) to avoid aggravating them.\u003c/p\u003e \u003cp\u003eConsistent with previous studies, KEGG enrichment and IPA analysis found that few DEPs predominantly participated in the IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signalling pathway and NF\u0026thinsp;\u0026minus;\u0026thinsp;kappa B signalling pathway, which plays a vital role in the pathogenesis of psoriasis\u003csup\u003e20\u003c/sup\u003e. In addition to being regulated by upstream regulators, interactions network by STRING found these molecules interacting with each other or chaperone proteins (mainly HSP90AA1) and then regulating specific target proteins involved in cell cycle control and signal transduction or the transcription machinery. All of this indicated the diversity and complexity of the functions of these molecules.\u003c/p\u003e \u003cp\u003eS100A7 (Psoriasin) is one of the AMPs belonging to the S100 family, produced by keratinocytes and leukocytes stimulated with IL-17, IL-22 and TNF; therefore, it plays an essential role in innate immunity and angiogenesis\u003csup\u003e9,21\u003c/sup\u003e. In our study, it was upregulated in sPV compared to mPV, which agrees with previous work showing higher serum levels of psoriasin in patients with severe psoriasis\u003csup\u003e9\u003c/sup\u003e and a reduction after treatment with biological agents\u003csup\u003e15\u003c/sup\u003e. KRT6A is one of the stress keratins that regulate keratinocyte differentiation and correlation to proteins that participate in EGFR and retinoic acid signalling\u003csup\u003e22,23\u003c/sup\u003e. Our results demonstrated that it was upregulated in DIA but downregulated in the PRM test, which the conclusions of the previous study can explain that individual stress keratin genes are associated with partially distinct gene networks \u003csup\u003e24\u003c/sup\u003e.\u003c/p\u003e \u003cp\u003eNeutrophil elastase (NE) is a primary proteinase in neutrophils that participates in microbicidal activity\u003csup\u003e25\u003c/sup\u003e. Previous research has found that the levels and activity of NE reflect disease state and severity\u003csup\u003e26\u003c/sup\u003e and augmented staining in the low-density granulocytes (LDGs) of psoriasis\u003csup\u003e27\u003c/sup\u003e. However, our results show that NE is down-regulated in sPV. Moreover, SLPI is a reversible NE inhibitor that dynamically controls NE activity. Although SLPI expression decreased in sPV, there was no statistical difference between the two groups. These results indicate that NE has a pleiotropic feature; that is, it has not only antibacterial effects and promotes proinflammatory but also impairs innate immunity \u003csup\u003e26\u003c/sup\u003e.\u003c/p\u003e \u003cp\u003eHSP90AA1 is a molecular chaperone which plays an essential role in cell survival, cytokine signalling, and immune response. It can bind bacterial Lipopolysaccharide (LPS) and mediates LPS-induced inflammatory response, including monocyte TNF secretion\u003csup\u003e28\u003c/sup\u003e. Furthermore, HSP90AA1 released by stressed keratinocytes activate DCs to secrete proinflammatory cytokines and AMPs such as S100A7\u003csup\u003e29\u003c/sup\u003e. Despite previous research finding a significantly decreased expression of HSP90AA1 in both keratinocytes and lymphocytes from psoriatic skin\u003csup\u003e30\u003c/sup\u003e, this study shows that it is upregulated in sPV. Our data is consistent with another study showing that it is significantly upregulated in epidermal keratinocytes and mast cells of psoriatic lesions and down-regulated after ustekinumab treatment\u003csup\u003e29\u003c/sup\u003e .\u003c/p\u003e \u003cp\u003eCD14 act as a co-receptor for toll-like receptors (TLRs) to activate multiple signal pathways of innate immunity responses to pathogens or tissue injury in diverse cells. This function can be achieved by LBP-dependent combination of the CD14-LPS complex or independently of TLRs\u003csup\u003e31\u003c/sup\u003e. Studies have shown that CD14\u0026thinsp;+\u0026thinsp;DC3s increased in psoriatic lesions and co-produced IL1B and IL23A\u003csup\u003e32\u003c/sup\u003e; in contradiction to this, IL-17A blockade induced higher expression of CD1C and CD14, which are markers for CD1c\u0026thinsp;+\u0026thinsp;CD14\u0026thinsp;+\u0026thinsp;dendritic cell (DC) that suppress antigen-specific T-cell responses, in post-treatment regulatory semimature DCs\u003csup\u003e33\u003c/sup\u003e. Accordingly, CD14 are down-regulated, along with CD1c, in sPV according to our proteomic dataset. These findings indicate that, although the CD14-mediated immune response to pathogenic microorganisms is weakened, the reduction of CD14 on specific dendritic cell subpopulations attenuates the inhibitory effect on T cells, which leads to the persistence and aggravation of inflammation in psoriasis. This study found CD36, another co-receptor associated with the TLR2/TLR6, was upregulated in sPV. Meanwhile, CD36 has a more vigorous activity for modulating TLR4-TLR6 signal transduction than CD14. So, we speculate that the reduction of CD14 may be related to the competition of the CD36 receptor pathway and the regulation of other proteins.\u003c/p\u003e \u003cp\u003eIL-33 is a cytokine that signals through the IL1RL1/ST2 receptor, which can activate NF-kappa-B and MAPK signalling pathways\u003csup\u003e34\u003c/sup\u003e and is a proinflammatory molecule and modulator in psoriasis\u003csup\u003e35\u0026ndash;37\u003c/sup\u003e. However, other studies found that IL-33 exert anti-inflammatory and protective activities in psoriatic skin\u003csup\u003e38,39\u003c/sup\u003e, which only manifests when the amount of IL-33 is excessive. Considering that IL33 was significantly elevated in sPV, our results agree it is a risk factor for psoriasis. Meanwhile, our results are consistent with previous research that IL-33 can function both as a cytokine and as a nuclear transcriptional regulator\u003csup\u003e39\u003c/sup\u003e since it can interact with chaperone proteins to regulate the transcription machinery.\u003c/p\u003e \u003cp\u003eLimitations of the study: (\u003cspan citationid=\"CR1\" class=\"CitationRef\"\u003e1\u003c/span\u003e) The sample size was relatively small. (\u003cspan citationid=\"CR2\" class=\"CitationRef\"\u003e2\u003c/span\u003e) DIA did not detect some low-abundance proteins, as we discussed in our previous study. (\u003cspan citationid=\"CR3\" class=\"CitationRef\"\u003e3\u003c/span\u003e) There are sex differences in patients between the two groups, which may affect the results (Table\u0026nbsp;\u003cspan refid=\"Tab1\" class=\"InternalRef\"\u003e1\u003c/span\u003e). These confounding factors might affect the results.\u003c/p\u003e"},{"header":"Materials and Methods","content":"\u003cdiv id=\"Sec10\" class=\"Section2\"\u003e \u003ch2\u003ePatients and samples\u003c/h2\u003e \u003cp\u003eThis study enrolled patients with moderate (5\u0026thinsp;\u0026lt;\u0026thinsp;PASI\u0026thinsp;\u0026le;\u0026thinsp;15) to severe psoriasis (PASI\u0026thinsp;\u0026gt;\u0026thinsp;15) from April 2020 to February 2024 in the Dermatology Hospital of Zhejiang Province. Patients were not receiving treatment at the time of enrollment or receiving treatment other than systematic immunosuppressants or combined with phototherapy. Participants were assessed and sampled at baseline. Other inclusion and exclusion criteria of the patients, obtaining methods and storage conditions of skin specimens, and strategies for evaluating disease severity have been formulated in our previous studies\u003csup\u003e15\u003c/sup\u003e. The study was approved by ethical committees at the Dermatology Hospital of Zhejiang Province (LL-2020-15) and performed according to the Declaration of Helsinki. Patients provided written informed consent before sampling.\u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec11\" class=\"Section2\"\u003e \u003ch2\u003eProteomic data acquisition\u003c/h2\u003e \u003cp\u003eFor DIA analysis, DIA data analysis, and quality control of proteome data (see Supplementary Fig. \u003cspan refid=\"MOESM1\" class=\"InternalRef\"\u003eS1\u003c/span\u003e online), please refer to the previous study\u003csup\u003e15\u003c/sup\u003e. Part of the proteomic data comes from a two-part prospective cohort study.\u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec12\" class=\"Section2\"\u003e \u003ch2\u003e4D-PRM\u003c/h2\u003e \u003cp\u003eSamples were analyzed on nanoElute (Bruker, Bremen, Germany) coupled to a timsTOF Pro (Bruker, Bremen, Germany) equipped with a CaptiveSpray source. Peptides were separated on a 25cm X 75\u0026micro;m analytical column, 1.6\u0026micro;m C18 beads with a packed emitter tip (IonOpticks, Australia). The timsTOF Pro (Bruker, Bremen, Germany) was operated in PRM-PASEF mode. The detection ion mode is positive, the scanning range of the parent ion is 100\u0026ndash;1700 m/z, the range of ion mobility 1/K0 is 0.6-1.6V\u0026middot;s/cm2, the Accu time and Ramp time is 50ms, the Lock Duty Cycle is 100%, the Capillary Voltage is 1500V, the Dry Gas speed is 3L/min, the Dry Temp is 180\u0026deg;C. The charge range is 0\u0026ndash;5, and the CID collision energy is 10 eV.\u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec13\" class=\"Section2\"\u003e \u003ch2\u003eBioinformatic analysis\u003c/h2\u003e \u003cp\u003eGO analysis of the DEPs was analyzed in the GO database and displayed by Cytoscape. Pearson correlation was used to show the correlation between DEPs and clinical severity (PASI). Circus plot was generated using the circle package in R language (version 4.0.1)\u003csup\u003e40\u003c/sup\u003e. The KEGG database was used for pathway analysis. The STRING database performed the interaction network among proteins. Upstream regulator analysis (URA) and interaction analysis were implemented by IPA (Version 24.0.1) (with P\u0026thinsp;\u0026lt;\u0026thinsp;0.05, Z score\u0026thinsp;\u0026gt;\u0026thinsp;0 or \u0026lt;\u0026thinsp;0)\u003csup\u003e41\u003c/sup\u003e.\u003c/p\u003e \u003c/div\u003e \u003cdiv id=\"Sec14\" class=\"Section2\"\u003e \u003ch2\u003eStatistical analysis\u003c/h2\u003e \u003cp\u003eQuantitative data between the two groups were calculated using the Student's t-test. The selection criteria of the DEPs for bioinformatic analysis were cut off with P\u0026thinsp;\u0026lt;\u0026thinsp;0.05 and FC\u0026thinsp;\u0026ge;\u0026thinsp;1.5. Statistical analysis was performed in R software (version 4.0.1).\u003c/p\u003e \u003c/div\u003e"},{"header":"Conclusions","content":"\u003cp\u003eIn conclusion, this study presents a proteomic difference between sPV and mPV in psoriatic lesions. These proteins comprise AMPs, serine protease, chaperone protein, co-receptor and other molecules. At the same time, they were associated with the IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signalling pathway, Neutrophil extracellular trap formation, Neutrophil degranulation, NF\u0026thinsp;\u0026minus;\u0026thinsp;kappa B signalling pathway, and defence response to a bacterium, which is closely associated with psoriasis pathogenesis. Our data identified eighteen DEPs as biomarkers of disease severity, and it suggested that targeting these molecules and preventing infection may improve the severity and therapeutic efficacy of psoriasis.\u003c/p\u003e "},{"header":"Declarations","content":"\u003cp\u003e \u003ch2\u003eCompeting interest\u003c/h2\u003e \u003cp\u003eThe authors declare no competing interests.\u003c/p\u003e \u003c/p\u003e\u003ch2\u003eAuthor Contribution\u003c/h2\u003e\u003cp\u003eL.L.W. and C.C. contributed equally as co-first authors to the study\u0026rsquo;s investigation and the writing of the original draft. B.B.X. and N.N.S. conducted the investigation. L.H.H and J.H. were responsible for resource acquisition. Q.D. was pivotal in conceptualization, funding acquisition, methodology development, and project administration. Q.D. and C.C. were instrumental in reviewing and editing the manuscript.All authors reviewed the manuscript.\u003c/p\u003e\u003ch2\u003eAcknowledgement\u003c/h2\u003e\u003cp\u003eThe authors thank Genechem Co., Ltd. (Shanghai, China) for the mass spectrometric analysis. We thank Dr Sun. for the data computation.\u003c/p\u003e\u003ch2\u003eData Availability\u003c/h2\u003e\u003cp\u003eThe data are available from the corresponding author on reasonable request. The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium(https://proteomecentral.proteomexchange.org) via the iProX partner repository with the dataset identifier PXD052886.\u003c/p\u003e"},{"header":"References","content":"\u003col\u003e\u003cli\u003e\u003cspan\u003eTakeshita, J. \u003cem\u003eet al.\u003c/em\u003e Psoriasis and comorbid diseases. Journal of the American Academy of Dermatology 76, 377\u0026ndash;390, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jaad.2016.07.064\u003c/span\u003e\u003cspan address=\"10.1016/j.jaad.2016.07.064\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2017).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eKimball, A. B. \u003cem\u003eet al.\u003c/em\u003e Risks of developing psychiatric disorders in pediatric patients with psoriasis. \u003cem\u003eJ Am Acad Dermatol\u003c/em\u003e 67, 651\u0026ndash;657.e651-652, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jaad.2011.11.948\u003c/span\u003e\u003cspan address=\"10.1016/j.jaad.2011.11.948\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2012).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eVan den Bosch, F. \u0026amp; Coates, L. Clinical management of psoriatic arthritis. Lancet 391, 2285\u0026ndash;2294, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/s0140-6736(18)30949-8\u003c/span\u003e\u003cspan address=\"10.1016/s0140-6736(18)30949-8\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2018).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eGriffiths, C. E. M., Armstrong, A. W., Gudjonsson, J. E. \u0026amp; Barker, J. Psoriasis. Lancet 397, 1301\u0026ndash;1315, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/s0140-6736(20)32549-6\u003c/span\u003e\u003cspan address=\"10.1016/s0140-6736(20)32549-6\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSutaria, N. \u0026amp; Au, S. C. Failure rates and survival times of systemic and biologic therapies in treating psoriasis: a retrospective study. J Dermatolog Treat 32, 617\u0026ndash;620, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1080/09546634.2019.1688756\u003c/span\u003e\u003cspan address=\"10.1080/09546634.2019.1688756\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eElnabawi, Y. A. \u003cem\u003eet al.\u003c/em\u003e CCL20 in psoriasis: A potential biomarker of disease severity, inflammation, and impaired vascular health. J Am Acad Dermatol 84, 913\u0026ndash;920, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jaad.2020.10.094\u003c/span\u003e\u003cspan address=\"10.1016/j.jaad.2020.10.094\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eGlickman, J. W. \u003cem\u003eet al.\u003c/em\u003e Cross-sectional study of blood biomarkers of patients with moderate to severe alopecia areata reveals systemic immune and cardiovascular biomarker dysregulation. J Am Acad Dermatol 84, 370\u0026ndash;380, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jaad.2020.04.138\u003c/span\u003e\u003cspan address=\"10.1016/j.jaad.2020.04.138\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eNavrazhina, K. \u003cem\u003eet al.\u003c/em\u003e Large-scale serum analysis identifies unique systemic biomarkers in psoriasis and hidradenitis suppurativa. Br J Dermatol 186, 684\u0026ndash;693, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/bjd.20642\u003c/span\u003e\u003cspan address=\"10.1111/bjd.20642\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2022).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eMaurelli, M. \u003cem\u003eet al.\u003c/em\u003e Psoriasin (S100A7) is increased in the serum of patients with moderate-to-severe psoriasis. Br J Dermatol 182, 1502\u0026ndash;1503, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/bjd.18807\u003c/span\u003e\u003cspan address=\"10.1111/bjd.18807\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2020).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eMatsunaga, Y., Hashimoto, Y. \u0026amp; Ishiko, A. Stratum corneum levels of calprotectin proteins S100A8/A9 correlate with disease activity in psoriasis patients. J Dermatol 48, 1518\u0026ndash;1525, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/1346-8138.16032\u003c/span\u003e\u003cspan address=\"10.1111/1346-8138.16032\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eDeng, J. \u003cem\u003eet al.\u003c/em\u003e Multi-omics approach identifies PI3 as a biomarker for disease severity and hyper-keratinization in psoriasis. J Dermatol Sci 111, 101\u0026ndash;108, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jdermsci.2023.07.005\u003c/span\u003e\u003cspan address=\"10.1016/j.jdermsci.2023.07.005\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2023).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eLudwig, C. \u003cem\u003eet al.\u003c/em\u003e Data-independent acquisition-based SWATH-MS for quantitative proteomics: a tutorial. Mol Syst Biol 14, e8126, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.15252/msb.20178126\u003c/span\u003e\u003cspan address=\"10.15252/msb.20178126\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2018).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eXu, M. \u003cem\u003eet al.\u003c/em\u003e In-depth serum proteomics reveals biomarkers of psoriasis severity and response to traditional Chinese medicine. Theranostics 9, 2475\u0026ndash;2488, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.7150/thno.31144\u003c/span\u003e\u003cspan address=\"10.7150/thno.31144\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2019).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eFoulkes, A. C. \u003cem\u003eet al.\u003c/em\u003e A Framework for Multi-Omic Prediction of Treatment Response to Biologic Therapy for Psoriasis. J Invest Dermatol 139, 100\u0026ndash;107, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jid.2018.04.041\u003c/span\u003e\u003cspan address=\"10.1016/j.jid.2018.04.041\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2019).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eDong, Q. \u003cem\u003eet al.\u003c/em\u003e IL-17A and TNF-α inhibitors induce multiple molecular changes in psoriasis. Front Immunol 13, 1015182, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.3389/fimmu.2022.1015182\u003c/span\u003e\u003cspan address=\"10.3389/fimmu.2022.1015182\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2022).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eZhou, H. \u003cem\u003eet al.\u003c/em\u003e Analysis of the mechanism of Buyang Huanwu Decoction against cerebral ischemia-reperfusion by multi-omics. J Ethnopharmacol 305, 116112, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jep.2022.116112\u003c/span\u003e\u003cspan address=\"10.1016/j.jep.2022.116112\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2023).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSwindell, W. R. \u003cem\u003eet al.\u003c/em\u003e Proteogenomic analysis of psoriasis reveals discordant and concordant changes in mRNA and protein abundance. Genome Med 7, 86, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1186/s13073-015-0208-5\u003c/span\u003e\u003cspan address=\"10.1186/s13073-015-0208-5\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2015).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSobolev, V. V. \u003cem\u003eet al.\u003c/em\u003e LC-MS/MS analysis of lesional and normally looking psoriatic skin reveals significant changes in protein metabolism and RNA processing. PLoS One 16, e0240956, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1371/journal.pone.0240956\u003c/span\u003e\u003cspan address=\"10.1371/journal.pone.0240956\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eWang, W. \u003cem\u003eet al.\u003c/em\u003e Proteomic analysis of psoriatic skin lesions in a Chinese population. J Proteomics 240, 104207, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jprot.2021.104207\u003c/span\u003e\u003cspan address=\"10.1016/j.jprot.2021.104207\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eYan, K. X. \u003cem\u003eet al.\u003c/em\u003e iTRAQ-based quantitative proteomics reveals biomarkers/pathways in psoriasis that can predict the efficacy of methotrexate. J Eur Acad Dermatol Venereol 36, 1784\u0026ndash;1795, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/jdv.18292\u003c/span\u003e\u003cspan address=\"10.1111/jdv.18292\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2022).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eVegfors, J., Ekman, A. K., Stoll, S. W., Bivik Eding, C. \u0026amp; Enerb\u0026auml;ck, C. Psoriasin (S100A7) promotes stress-induced angiogenesis. Br J Dermatol 175, 1263\u0026ndash;1273, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/bjd.14718\u003c/span\u003e\u003cspan address=\"10.1111/bjd.14718\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2016).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eChiang, C. Y. \u003cem\u003eet al.\u003c/em\u003e SH3BGRL3 Protein as a Potential Prognostic Biomarker for Urothelial Carcinoma: A Novel Binding Partner of Epidermal Growth Factor Receptor. Clin Cancer Res 21, 5601\u0026ndash;5611, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1158/1078-0432.Ccr-14-3308\u003c/span\u003e\u003cspan address=\"10.1158/1078-0432.Ccr-14-3308\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2015).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eZhang, S. \u003cem\u003eet al.\u003c/em\u003e Differential CRABP-II and FABP5 expression patterns and implications for medulloblastoma retinoic acid sensitivity. RSC Adv 8, 14048\u0026ndash;14055, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1039/c8ra00744f\u003c/span\u003e\u003cspan address=\"10.1039/c8ra00744f\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2018).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eCohen, E. \u003cem\u003eet al.\u003c/em\u003e Significance of stress keratin expression in normal and diseased epithelia. iScience 27, 108805, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.isci.2024.108805\u003c/span\u003e\u003cspan address=\"10.1016/j.isci.2024.108805\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2024).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eZeng, W., Song, Y., Wang, R., He, R. \u0026amp; Wang, T. Neutrophil elastase: From mechanisms to therapeutic potential. J Pharm Anal 13, 355\u0026ndash;366, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jpha.2022.12.003\u003c/span\u003e\u003cspan address=\"10.1016/j.jpha.2022.12.003\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2023).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eVoynow, J. A. \u0026amp; Shinbashi, M. Neutrophil Elastase and Chronic Lung Disease. \u003cem\u003eBiomolecules\u003c/em\u003e 11, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.3390/biom11081065\u003c/span\u003e\u003cspan address=\"10.3390/biom11081065\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSkrzeczynska-Moncznik, J. \u003cem\u003eet al.\u003c/em\u003e Differences in Staining for Neutrophil Elastase and its Controlling Inhibitor SLPI Reveal Heterogeneity among Neutrophils in Psoriasis. J Invest Dermatol 140, 1371\u0026ndash;1378.e1373, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jid.2019.12.015\u003c/span\u003e\u003cspan address=\"10.1016/j.jid.2019.12.015\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2020).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eTriantafilou, K., Triantafilou, M. \u0026amp; Dedrick, R. L. A CD14-independent LPS receptor cluster. Nat Immunol 2, 338\u0026ndash;345, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1038/86342\u003c/span\u003e\u003cspan address=\"10.1038/86342\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2001).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eKakeda, M., Arock, M., Schlapbach, C. \u0026amp; Yawalkar, N. Increased expression of heat shock protein 90 in keratinocytes and mast cells in patients with psoriasis. J Am Acad Dermatol 70, 683\u0026ndash;690.e681, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jaad.2013.12.002\u003c/span\u003e\u003cspan address=\"10.1016/j.jaad.2013.12.002\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2014).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eGęgotek, A., Domingues, P., Wroński, A., Ambrożewicz, E. \u0026amp; Skrzydlewska, E. The Proteomic Profile of Keratinocytes and Lymphocytes in Psoriatic Patients. Proteomics Clin Appl 13, e1800119, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1002/prca.201800119\u003c/span\u003e\u003cspan address=\"10.1002/prca.201800119\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2019).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSharygin, D., Koniaris, L. G., Wells, C., Zimmers, T. A. \u0026amp; Hamidi, T. Role of CD14 in human disease. Immunology 169, 260\u0026ndash;270, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/imm.13634\u003c/span\u003e\u003cspan address=\"10.1111/imm.13634\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2023).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eNakamizo, S. \u003cem\u003eet al.\u003c/em\u003e Single-cell analysis of human skin identifies CD14\u0026thinsp;+\u0026thinsp;type 3 dendritic cells co-producing IL1B and IL23A in psoriasis. J Exp Med 218, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1084/jem.20202345\u003c/span\u003e\u003cspan address=\"10.1084/jem.20202345\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eKim, J. \u003cem\u003eet al.\u003c/em\u003e Multi-omics segregate different transcriptomic impacts of anti-IL-17A blockade on type 17 T-cells and regulatory immune cells in psoriasis skin. Front Immunol 14, 1250504, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.3389/fimmu.2023.1250504\u003c/span\u003e\u003cspan address=\"10.3389/fimmu.2023.1250504\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2023).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eSchmitz, J. \u003cem\u003eet al.\u003c/em\u003e IL-33, an interleukin-1-like cytokine that signals via the IL-1 receptor-related protein ST2 and induces T helper type 2-associated cytokines. Immunity 23, 479\u0026ndash;490, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.immuni.2005.09.015\u003c/span\u003e\u003cspan address=\"10.1016/j.immuni.2005.09.015\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2005).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eBalato, A. \u003cem\u003eet al.\u003c/em\u003e IL-33 is secreted by psoriatic keratinocytes and induces pro-inflammatory cytokines via keratinocyte and mast cell activation. Exp Dermatol 21, 892\u0026ndash;894, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/exd.12027\u003c/span\u003e\u003cspan address=\"10.1111/exd.12027\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2012).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eGriesenauer, B. \u0026amp; Paczesny, S. The ST2/IL-33 Axis in Immune Cells during Inflammatory Diseases. Front Immunol 8, 475, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.3389/fimmu.2017.00475\u003c/span\u003e\u003cspan address=\"10.3389/fimmu.2017.00475\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2017).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eZeng, F. \u003cem\u003eet al.\u003c/em\u003e An Autocrine Circuit of IL-33 in Keratinocytes Is Involved in the Progression of Psoriasis. J Invest Dermatol 141, 596\u0026ndash;606.e597, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jid.2020.07.027\u003c/span\u003e\u003cspan address=\"10.1016/j.jid.2020.07.027\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2021).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eChen, Z. \u003cem\u003eet al.\u003c/em\u003e Interleukin-33 alleviates psoriatic inflammation by suppressing the T helper type 17 immune response. Immunology 160, 382\u0026ndash;392, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1111/imm.13203\u003c/span\u003e\u003cspan address=\"10.1111/imm.13203\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2020).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eDragan, M. \u003cem\u003eet al.\u003c/em\u003e Epidermis-Intrinsic Transcription Factor Ovol1 Coordinately Regulates Barrier Maintenance and Neutrophil Accumulation in Psoriasis-Like Inflammation. J Invest Dermatol 142, 583\u0026ndash;593.e585, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1016/j.jid.2021.08.397\u003c/span\u003e\u003cspan address=\"10.1016/j.jid.2021.08.397\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2022).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eKrzywinski, M. \u003cem\u003eet al.\u003c/em\u003e Circos: an information aesthetic for comparative genomics. Genome Res 19, 1639\u0026ndash;1645, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1101/gr.092759.109\u003c/span\u003e\u003cspan address=\"10.1101/gr.092759.109\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2009).\u003c/span\u003e\u003c/li\u003e \u003cli\u003e\u003cspan\u003eKr\u0026auml;mer, A., Green, J., Pollard, J., Jr. \u0026amp; Tugendreich, S. Causal analysis approaches in Ingenuity Pathway Analysis. Bioinformatics 30, 523\u0026ndash;530, doi:\u003cspan class=\"ExternalRef\"\u003e\u003cspan class=\"RefSource\"\u003e10.1093/bioinformatics/btt703\u003c/span\u003e\u003cspan address=\"10.1093/bioinformatics/btt703\" targettype=\"DOI\" class=\"RefTarget\"\u003e\u003c/span\u003e\u003c/span\u003e (2014).\u003c/span\u003e\u003c/li\u003e\u003c/ol\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":true,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":false,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"
[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Proteomics, Psoriasis Vulgaris, 4D-Parallel Reaction Monitoring, Data-Independent Acquisition Mass Spectrometry, Ingenuity Pathway Analysis, Biomarker","lastPublishedDoi":"10.21203/rs.3.rs-4710909/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4710909/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eAlthough an ongoing understanding of psoriasis vulgaris (PV) pathogenesis, little is known about the proteomic differences between moderate and severe psoriasis. In this cross-sectional study, we evaluated the proteomic differences between moderate and severe psoriasis using data-independent acquisition mass spectrometry (DIA-MS). 173 differentially expressed proteins (DEPs) were significantly differentially expressed between the two groups. Among them, 85 proteins were upregulated, while 88 were downregulated (FC\u0026thinsp;\u0026ge;\u0026thinsp;\u0026plusmn;\u0026thinsp;1.5, P\u0026thinsp;\u0026lt;\u0026thinsp;0.05). Eighteen DEPs were mainly enriched in the IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signalling pathway, Neutrophil extracellular trap formation, Neutrophil degranulation and NF\u0026thinsp;\u0026minus;\u0026thinsp;kappa B signalling pathway, which were associated with psoriasis pathogenesis. Ingenuity pathway Analysis (IPA) identified TNF and TDP53 as the top upstream up-regulators, while Lipopolysaccharide and YAP1 were the top potential down-regulators. The main active pathways were antimicrobial peptides and PTEN signalling, while the inhibitory pathways were the neutrophil extracellular trap pathway, neutrophil degranulation, and IL-8 signalling. 4D-parallel reaction monitoring (4D-PRM) suggested that KRT6A were downregulated in severe psoriasis. Our data identify Eighteen DEPs as biomarkers of disease severity, and are associated with IL\u0026thinsp;\u0026minus;\u0026thinsp;17 signalling pathway, Neutrophil extracellular trap formation, NF\u0026thinsp;\u0026minus;\u0026thinsp;kappa B signalling pathway, and defence response to the bacterium. Targeting these molecules and measures to manage infection may improve psoriasis's severity and therapeutic efficacy.\u003c/p\u003e","manuscriptTitle":"Cross-sectional study of proteomic differences between moderate and severe psoriasis","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-08-06 16:08:04","doi":"10.21203/rs.3.rs-4710909/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2024-10-09T06:09:06+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-10-08T17:17:51+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-09-26T15:58:08+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-09-23T22:04:54+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"177135602827437865407623585508368431592","date":"2024-09-23T19:37:51+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-09-20T18:36:37+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-09-13T13:45:24+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"21972551357875240084320890659321393032","date":"2024-09-13T06:50:30+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"21343484804202018189285045609752496671","date":"2024-09-11T20:25:28+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"10990898686853538472639433731316617564","date":"2024-09-11T15:31:12+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"62024828527014722123032175544333958565","date":"2024-09-11T14:54:20+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-09-11T05:03:49+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-09-11T04:50:56+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2024-07-15T12:45:34+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2024-07-12T04:44:59+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2024-07-09T09:37:45+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"
[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"ea8dc557-c6c5-4a46-9a49-e37cf55672fb","owner":[],"postedDate":"August 6th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":35563077,"name":"Biological sciences/Immunology"},{"id":35563078,"name":"Biological sciences/Molecular biology"},{"id":35563079,"name":"Health sciences/Biomarkers"},{"id":35563080,"name":"Health sciences/Medical research"}],"tags":[],"updatedAt":"2025-02-03T16:11:31+00:00","versionOfRecord":{"articleIdentity":"rs-4710909","link":"https://doi.org/10.1038/s41598-025-87252-9","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-01-27 15:57:53","publishedOnDateReadable":"January 27th, 2025"},"versionCreatedAt":"2024-08-06 16:08:04","video":"","vorDoi":"10.1038/s41598-025-87252-9","vorDoiUrl":"https://doi.org/10.1038/s41598-025-87252-9","workflowStages":[]},"version":"v1","identity":"rs-4710909","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4710909","identity":"rs-4710909","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}
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