Eutopic endometrium from women with endometriosis and chlamydial endometritis share immunological cell types and DNA repair imbalance: A transcriptome meta-analytical perspective

Omero Benedicto Poli-Neto, Omero Benedicto Poli‐Neto, Daniela Carlos, Aureo Favaretto, A L Favaretto, Favaretto A Junior, Rosa-E-Silva JC, Julio Cesar Rosa-E-Silva, Júlio César Rosa e Silva, Meola J, Juliana Meola, Daniel Tiezzi, Daniel Guimarães Tiezzi
Journal of reproductive immunology · 2021 · vol. 145 , pp. 103307 · doi:10.1016/j.jri.2021.103307 · PMID:33725527 · W3136821446
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A transcriptome meta-analysis of eutopic endometrium from women with endometriosis and chlamydial endometritis revealed shared immunological cell types and an imbalance in DNA repair pathways.

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Abstract

The aim of this study was to identify the key similarities between the eutopic endometrium of women with endometriosis and chlamydia-induced endometritis taking into account tissue microenvironment heterogeneity, transcript gene profile, and enriched pathways. A meta-analysis of whole transcriptome microarrays was performed using publicly available data, including samples containing both glandular and stromal endometrial components. Control samples were obtained from women without any reported pathological condition. Only samples obtained during the proliferative menstrual phase were included. Cellular tissue heterogeneity was predicted using a method that integrates gene set enrichment and deconvolution approaches. The batch effect was estimated by principal variant component analysis and removed using an empirical Bayes method. Differentially expressed genes were identified using an adjusted p-value < 0.05 and fold change = 1.5. The protein-protein interaction network was built using the STRING database and interaction score over 400. The Molecular Signatures Database was used to analyse the functional enrichment analysis. Both conditions showed similarities in cell types in the microenvironment, particularly CD4+ and CD8+ Tem cells, NKT cells, Th2 cells, basophils, and eosinophils. With regards to the regulation of cellular senescence and DNA integrity/damage checkpoint, which are commonly enriched pathways, 21 genes were down-regulated and directly related to DNA repair. Compared to the endometriosis samples, some chlamydial endometritis samples presented a lack of enriched immune pathways. Our results suggest that both conditions show similar distributions of microenvironment cell types, the downregulation of genes involved in DNA repair and cell cycle control, and pathways involved in immune response evasion.

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Condition tags

mesh:D004716endometriosis

MeSH descriptors

Chlamydia Infections Endometriosis Endometritis Immune Evasion Chlamydia Chlamydia Chlamydia Infections Chlamydia Infections Chlamydia Infections Chlamydia Infections Datasets as Topic DNA Repair DNA Repair Down-Regulation Down-Regulation Endometriosis Endometriosis Endometriosis Endometritis Endometritis

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