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对表面活性蛋白的候选途径分析确定了影响肺癌风险的CTSH和SFTA2
Jennifer Luyapan1,2, Yohan Bossé3,4, Zhonglin Li3
1Quantitative Biomedical Science Program, Geisel School of Medicine, Dartmouth College, Hanover, NH 03755, USA.
Human molecular genetics
|July 20, 2023
概括
这项研究确定了与肺癌风险相关的表面活性剂相关基因CTSH和SFTA2中的新型单核酸多态 (SNP). 这些发现突出了肺癌易感性的潜在遗传标志物,特别是在长期吸烟者中.
科学领域:
- 遗传学 遗传学 是一个
- 肺部医学 肺部医学
- 在瘤学瘤学.
背景情况:
- 肺表面活性剂是一种由膜II型细胞产生的脂蛋白,在肺功能中起着至关重要的作用.
- 表面活性剂相关基因的遗传变异可能会影响个体对肺癌的易感性.
- 全基因组关联研究 (GWAS) 是识别肺癌等复杂疾病遗传风险因素的强大工具.
研究的目的:
- 研究40个表面活性剂相关基因中的单核酸多态 (SNPs) 与肺癌风险之间的关联.
- 为了确定赋予肺癌易感性的新型遗传变异.
- 在独立的队列中验证已识别的遗传关联.
主要方法:
- 在40个与表面活性剂相关的基因中分析了200139个SNP,使用来自两个独立的肺癌GWAS的基因型数据.
- 发现数据包括18,082例病例和13,780例对照;复制数据包括1,914例病例和3,065例对照,所有这些都是欧洲血统.
- 多变量逻辑回归和全转录组关联研究 (TWAS) 用于评估SNP关联和基因表达与肺癌的联系.
主要成果:
- 在发现和复制数据中,CTSH (rs34577742) 和SFTA2 (rs3095153) 的新型SNP与整体肺癌风险有显著的关联.
- 在长期吸烟者中,这些SNP (CTSH:rs34577742;SFTA2:rs3095152) 显示出与肺癌的有效关联.
- 根据基因表达水平,TWAS确定了CTSH和SFTA2作为与肺癌风险最强烈相关的基因.
结论:
- 在CTSH和SFTA2基因中的特定SNP是肺癌的新型遗传风险因素.
- 这些发现表明表面活性剂相关基因在肺癌发生过程中的潜在作用.
- 鉴定出的基因变异可以作为肺癌风险评估的生物标志物,特别是在吸烟者中.
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