Journal of East China Normal University(Natural Science) ›› 2024, Vol. 2024 ›› Issue (4): 100-110.doi: 10.3969/j.issn.1000-5641.2024.04.010

• Life Sciences • Previous Articles    

Bioinformatics-based construction of immune prognostic gene model for hepatocellular carcinoma and preliminary model validation

Linding XIE1,2, Yuan ZHANG3, Yihong CAI1,2,*()   

  1. 1. Department of Health Inspection and Quarantine, School of Public Health, Anhui Medical University, Hefei 230032, China
    2. Anhui Province Key Laboratory of Zoonoses, Anhui Medical University, Hefei 230032, China
    3. Department of Clinical Laboratory, Suzhou Wujiang District Children's Hospital, Suzhou, Jiangsu 215234, China
  • Received:2023-02-10 Accepted:2023-06-29 Online:2024-07-25 Published:2024-07-23
  • Contact: Yihong CAI E-mail:yihongcai2022@163.com

Abstract:

The Cancer Genome Atlas (TCGA) and the International Cancer Genome Consortium (ICGC) databases were used to collect RNA sequence information from patients with hepatocellular carcinoma (HCC). The key genes involved in the immune response mechanism to HCC were screened using the non-negative matrix factorization (NMF) clustering method and weighted gene co-expression network analysis (WGCNA). Prognostic gene models were constructed using the least absolute shrinkage and selection operator (LASSO) regression analysis, and biological functions were analyzed using gene set enrichment analysis (GSEA). Subsequently, to assess the immune infiltration and the related functional differences between the patients in two different risk groups , we used single-sample gene set enrichment analysis (ssGSEA). We constructed column line graphs in combination with independent risk factors to predict overall patient survival time using the “RMS” package in R. Finally, preliminary clinical validation was performed using the Human Protein Atlas (HPA) database with real-time quantitative fluorescent PCR (RT-qPCR). In conclusion, we integrated the clinical characteristics of patients based on risk scores to construct a verifiable and reproducible column line chart, providing a reliable reference for the precise treatment of patients in clinical oncology.

Key words: bioinformatics, weighted gene co-expression network analysis, hepatocellular carcinoma, immune-related genes, prognostic model

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