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线粒体蛋白在大动脉动脉瘤中的因果作用:来自孟德尔随机化,转录组分析和实验验证的证据

Adilai Abodulikemu¹, Li Li², Mukamengjiang Juaiti²

¹Department of Coronary Care Unit, Traditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, The Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, China.

|March 11, 2025

概括

这项研究使用门德尔的随机化来识别与大动脉动脉瘤 (AA) 有因果关系的线粒体蛋白质. 铁硫集群组合酶 (ISCU),MRPL14和MSRA被发现与AA病原发生有关.

科学领域:

遗传学遗传学是一个
分子生物学分子生物学
心血管研究研究心血管研究

背景情况:

线粒体功能障碍与大动脉动脉瘤 (AA) 的发展有关.
线粒体蛋白质在AA病变发生中的特定因果作用尚未完全理解.

研究的目的:

研究基因预测的线粒体蛋白质与大动脉动脉瘤 (AA) 风险之间的潜在因果关系.
确定特定的线粒体蛋白质,可以作为AA的治疗点或生物标志物.

主要方法:

采用孟德尔随机化 (MR) 方法,使用来自IEU OpenGWAS数据库和FinnGen生物库的遗传数据.
作为主要分析方法,采用逆变量加权 (IVW),用MR-Egger和加权中位数作为灵敏度分析.
使用GWAS目录数据,元分析,基因表达验证 (GEO),基因组丰富分析 (GSEA) 和体外实验进行复制.

主要成果:

鉴定了三种与AA因果相关的线粒体蛋白质:铁硫组装酶 (ISCU),39S核糖体蛋白质L14 (MRPL14) 和线粒体甲硫化物减少酶 (MSRA).
敏感性分析证实了研究结果的稳定性,排除了异质性,性和反向因果关系.
基因表达分析显示ISCU在AA组织中的上调和MRPL14/MSRA下调,其中涉及与炎症和血管重塑相关的途径.

结论:

提供了强有力的遗传和实验证据,证明ISCU,MRPL14和MSRA在大动脉动脉瘤的发病过程中的因果作用.
这些已识别的线粒体蛋白质代表了潜在的新生物标记物和大动脉动脉瘤的治疗点.
需要进一步的研究来探索这些发现在AA管理中的临床实用性.

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