Screening of immunosuppressive cells from colorectal adenocarcinoma and identification of prognostic markers

Abstract Background Colorectal cancer (CRC) is the most common type of gastrointestinal malignant tumor. Colorectal adenocarcinoma (COAD) is the most common type of colorectal cancer, and it is extremely harmful to human life and health. In recent years, the role of the immune system in the development of tumor-associated inflammation and cancer has received increasing attention. Results In this study, we compiled the expression profiles of 262 patients with complete follow-up data from the Cancer Genome Atlas (TCGA) database as an experimental group and selected 65 samples from the GEO dataset (of which M0 totaled 46 samples). Validated as a verification group. First, we screened the immune cell Th-17 cells related to the prognosis of COAD disease, and then identified the Th-17 cells-related hub genes by constructing co-expression network analysis (WGCNA) and lasso regression analysis (LASSO), which determined that it may be related to Th-17 cells. Six genes associated with prognosis in patients with COAD:”KRT23 ULBP2 ASRGL1 SERPINA1 SCIN SLC28A2”. Finally, we constructed a clinical prediction model and analyzed the predictive power of the model. These hub genes have been shown to be involved in the development of many diseases and are closely linked to digestive diseases. Our results suggest that the hub gene may influence the prognosis of COAD by regulating the immune infiltration of Th-17cells. Conclusions These newly discovered hub genes help to understand the mechanisms of COAD development and metastasis, thereby promoting the development of COAD and providing new therapeutic targets and biomarkers for COAD.