Journal
BIOENGINEERED
Volume 12, Issue 1, Pages 2664-2675Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/21655979.2021.1938470
Keywords
Hepatocellular carcinoma; immune infiltration; ICGC; TCGA; DNA repair gene
Categories
Funding
- National Natural Science Foundation of China [81871909]
- 13th five-year Plan Science and Education strong Health Project leading personnel of Yangzhou [YZCXTD201801]
- Provincial-level discipline leader of the NJPH [DTRC201809]
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Rad51, a DNA-repair-related gene, is found to be overexpressed in hepatocellular carcinoma (HCC) patients and associated with clinical severity, prognosis, and immune infiltration. It serves as a valuable biomarker for liver cancer prognosis and has significant correlations with immune infiltrations.
Rad51, a DNA-repair-related gene, has been reported to be involved in multiple cancers. However, its link with immune infiltration in liver cancer still unknown. Therefore, more research into the roles and activities of Rad51 in hepatocellular carcinoma (HCC) is required. The International Cancer Genome Consortium (ICGC) was used to identify the DNA repair gene Rad51, and has been proved to be overexpressed in HCC patients. We plotted the Kapan-Meier curve, demonstrating that patients with high expression of Rad51 have a poor prognosis. By analyzing the patient data, we discovered that high expression of Rad51 in HCC is linked to clinical stage, pathological T stage, grade, and age. Rad51 was found to be an independent prognostic factor for HCC patients using the multivariate cox model. Moreover, Rad51 expression was found to be associated with the infiltration of immune cells (B cells, CD4 + T cells, CD8 + T cells, neutrophils, macrophages, and dendritic cells) and was intimately linked to the expression of immune cell markers in HCC. Through the analysis of differentially coexpressed genes (DCGs) of Rad51, GO and KEGG enrichment analyses suggested that the expression level of Rad51 might be relevant to neuroactive ligand-receptor interactions, the cell cycle, DNA replication, homologous recombination, oocyte meiosis, and the Fanconi anemia pathway. These findings indicated that Rad51 is a valuable biomarker for the prognosis of patients with liver cancer and that its expression has a significant correlation with immune infiltrations.
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