甲状腺癌差异表达基因的生物信息学分析

Bioinformatics analysis of differentially expressed genes in thyroid cancer

  • 摘要:
      目的  通过生物信息学方法筛选女性甲状腺癌(THCA)发生发展关键枢纽基因(Hub基因),探讨女性THCA发病机制。
      方法  根据性别将1 780例诊断为THCA患者分为男性组(n=300)和女性组(n=1 480)。通过GEO芯片数据集GSE29265获取2组甲状腺癌及正常组织数据信息。分别筛选出2组癌组织、相对正常组织的差异表达基因(DEGs);构建DEGs的蛋白互作网络,并筛选Hub基因;采用基因本体(GO)数据库及京都基因与基因组百科全书(KEGG)分析THCA女性组Hub基因。
      结果  分析发现女性THCA发病率是男性的4.93倍。女性组和男性组分别筛选出163个、165个差异表达为4倍以上的DEGs,以及分别筛选出10个、8个Hub基因,其中2组共有Hub基因4个,女性组特有Hub基因6个。女性组163个基因中,参与女性THCA生物学过程及相关信号通路的Hub基因有8个。
      结论  PROM1EVA1APRSS23ITGA2NCAM1KIT为女性THCA中特有的DEGs,其可能将成为女性THCA患者潜在的治疗靶点。

     

    Abstract:
      Objective  To investigate the pathogenesis of thyroid carcinoma (THCA) in female, and screen Hub genes of THCA by bioinformatics.
      Methods  A total of 1 780 patients diagnosed with THCA were divided into male group (n=300) and female group (n=1 480) according to gender. The data of thyroid cancer and normal tissue in two groups were obtained by GEO chip data set GSE29265. The differentially expressed genes (DEGs) in two groups of cancer tissues and relatively normal tissues were screened, respectively. The protein interaction network of DEGs was constructed and Hub genes were screened. Hub genes were analyzed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) in female group with THCA.
      Results  The analysis found that the incidence of THCA in female was 4.93 times higher than that in male. In the female group and the male group, 163 and 165 DEGs with more than 4 fold difference were screened out, respectively, and ten as well as eight Hub genes were screened out, respectively, among which 4 Hub genes were found in two groups, and 6 Hub genes were unique in the female group. Among 163 genes in the female group, 8 Hub genes were involved in the biological process and related signaling pathways of female THCA.
      Conclusion  PROM1, EVA1A, PRSS23, ITGA2, NCAM1 and KIT are the unique DEGs to female THCA patients, which may become potential therapeutic targets for female THCA patients.

     

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