对叶酸对结直肠癌风险的全基因组相互作用分析
Emmanouil Bouras1, Andre E Kim2, Yi Lin3
1Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece.
The American journal of clinical nutrition
|August 28, 2023
概括
更高的叶酸摄入量可能会降低结肠直肠癌 (CRC) 的风险. 基因变异,特别是SYN2/TIMP4附近的基因变异,可以改变这种关联,尤其是叶酸补充剂.
科学领域:
- 遗传学 遗传学 是一个
- 营养流行病学 营养流行病学
- 癌症研究 癌症研究
背景情况:
- 较高的叶酸摄入量与降低结直肠癌 (CRC) 风险有关,但潜在的机制尚不清楚.
- 影响叶酸代谢的遗传变异可能为叶酸在CRC发展中的作用提供了洞察力.
研究的目的:
- 进行全基因组相互作用分析,以确定修改叶酸摄入量与CRC风险之间的关联的遗传变异.
主要方法:
- 在51项研究中使用了后勤回归和加权假设测试 (30,550例CRC病例,42,336例对照).
- 检查了常见遗传变异与食叶酸,叶酸补充剂使用和叶酸总摄入量之间的相互作用.
主要成果:
- 观察到饮食,全叶酸和叶酸补充剂使用与CRC风险的不良关联.
- 在使用叶酸补充剂和3p25.2位点 (SYN2/TIMP4附近) 的变异之间发现了显著的相互作用 (P <5x10^-8).
- 变体rs150924902显示了最强的相互作用,叶酸补充剂降低了TT基因型载体的CRC风险,但增加了TA基因型载体的CRC风险.
结论:
- 3p25.2位点的遗传变异可能会改变叶酸补充剂对CRC风险的影响.
- 需要进一步的实验研究和omics数据来验证这些发现.
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