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Identification of genetic mechanisms underlying lipid metabolism-mediated tumor immunity in head and neck squamous cell carcinoma

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机构: [1]Capital Med Univ, Dept Otorhinolaryngol Head & Neck Surg, Xuanwu Hosp, 45 Changchun St, Beijing 100053, Peoples R China [2]Capital Med Univ, 10 Xitou Tiao, Youan Menwai, Beijing 10069, Peoples R China
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关键词: Lipid metabolism Tumor immunity Head and neck squamous carcinoma Bioinformatics

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ObjectiveTo identify the genetic mechanisms underlying lipid metabolism-mediated tumor immunity in head and neck squamous carcinoma (HNSC).Materials and methodsRNA sequencing data and clinical characteristics of HNSC patients were procured from The Cancer Genome Atlas (TCGA) database. Lipid metabolism-related genes were collected from KEGG and MSigDB databases. Immune cells and immune-related genes were obtained from the TISIDB database. The differentially expressed genes (DEGs) in HNSC were identified and weighted correlation network analysis (WGCNA) was performed to identify the significant gene modules. Lasso regression analysis was performed to identify hub genes. The differential gene expression pattern, diagnostic values, relationships with clinical features, prognostic values, relationships with tumor mutation burden (TMB), and signaling pathways involved, were each investigated.ResultsOne thousand six hundred sixty-eight DEGs were identified as dysregulated between HNSC tumor samples and healthy control head and neck samples. WGCNA analysis and Lasso regression analysis identified 8 hub genes, including 3 immune-related genes (PLA2G2D, TNFAIP8L2 and CYP27A1) and 5 lipid metabolism-related genes (FOXP3, IL21R, ITGAL, TRAF1 and WIPF1). Except CYP27A1, the other hub genes were upregulated in HNSC as compared with healthy control samples, and a low expression of these hub genes indicated a higher risk of death in HNSC. Except PLA2G2D, all other hub genes were significantly and negatively related with TMB in HNSC. The hub genes were implicated in several immune-related signaling pathways including T cell receptor signaling, Th17 cell differentiation, and natural killer (NK) cell mediated cytotoxicity.ConclusionThree immune genes (PLA2G2D, TNFAIP8L2, and CYP27A1) and immune-related pathways (T cell receptor signaling, Th17 cell differentiation, and natural killer (NK) cell mediated cytotoxicity) were predicted to play significant roles in the lipid metabolism-mediated tumor immunity in HNSC.

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出版当年[2022]版:
大类 | 3 区 医学
小类 | 3 区 遗传学
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 遗传学
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出版当年[2021]版:
Q2 GENETICS & HEREDITY
最新[2023]版:
Q3 GENETICS & HEREDITY

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第一作者机构: [1]Capital Med Univ, Dept Otorhinolaryngol Head & Neck Surg, Xuanwu Hosp, 45 Changchun St, Beijing 100053, Peoples R China
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