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线粒体相关的程序性细胞死亡基因在慢阻肺中的鉴定

靖 志涛, 周 广, 谢 文丽, 邱诗 林*

摘要

目的:为了研究线粒体相关的程序性细胞死亡基因在慢性阻塞性肺疾病(COPD)中的表达,探讨线粒体相关的
程序性细胞死亡基因在慢阻肺中的可能发病机制。方法:先从 GEO 数据库下载慢阻肺数据集 GSE76925,然后用 WGCNA
选出关键的 blue 模块,将得到的 blue 模块与 PCD 相关基因与线粒体相关基因取交集得到 12 个关键基因。然后对 12 个
关键基因进行 GO 富集分析和 KEGG 通路富集分析。对 12 个关键基因进行 Lasso 分析,选出 8 个关键基因。在数据集
GSE76925、GSE38974、GSE42057、GSE20257、GSE11784 分别验证 8 个关键基因的表达情况,选出最有意义的 2 个关键
基因 GHITM、CISD1,并用 CIBERSORT 算法计算这两个基因在与 COPD 相关的免疫细胞中的相关性。结果:关键基因
GHITM、CISD1 在慢阻肺人肺数据集 GSE76925、GSE38974 中表达有统计学意义。GHITM 在慢阻肺人血数据集 GSE42057
中有统计学意义,CISD1 在慢阻肺人血数据集 GSE42057 中无统计学意义。GHITM、CISD1 在慢阻肺人肺上皮细胞数据
集 GSE20257、GSE11784 中表达有统计学意义。GHITM 与 γδT 细胞、M2 型巨噬细胞正相关,且具有统计学意义。发
现 CISD1 与 γδT 细胞、初始 B 细胞正相关,且具有统计学意义。 结论:线粒体与程序性细胞死亡关键基因 GHITM、
CISD1 参与了 COPD 的发生发展,可能是预防吸烟相关 COPD 的潜在靶点。

关键词

慢阻肺;线粒体;程序性细胞死亡;加权基因共表达网络分析;生物信息学

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