肠道微生物群通过血液代谢物调解对肺癌风险的影响:从全面的孟德尔随机化分析和遗传分析中得出的结论
Yizhao Du1, Qin Wang1, Zongmei Zheng1
1Department of Oncology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Frontiers in nutrition
|September 26, 2024
概括
肠道微生物群和代谢物影响肺癌风险,特定的细菌如 Bacteroides clarus 增加风险,而 Eubacteriaceae 降低风险. 主体基因也会影响肺癌患者的肠道微生物.
科学领域:
- 微生物组研究的研究.
- 代谢学 代谢学 代谢学
- 癌症遗传学 癌症遗传学
背景情况:
- 肠道微生物群 (GM) 和代谢变化与肺癌 (LC) 的发展有关.
- 宿主遗传变异可以通过调节转基因来影响LC易感性.
- 转基因,代谢物,宿主基因和LC之间的因果关系需要进一步阐明.
研究的目的:
- 通过双向门德尔随机化 (MR) 来研究肠道微生物群和肺癌之间的因果关系.
- 为了确定肠道微生物群-肺癌轴中的潜在介导血液代谢物.
- 探索宿主基因与肺癌患者肠道微生物丰富度之间的关联.
主要方法:
- 使用双向门德尔随机化 (MR) 分析来评估因果关系.
- 两步调解分析被用于识别调解血液代谢物.
- 敏感性分析包括IVW,加权中位数,MR-Egger和MR-PRESSO.
- 联系不平衡得分回归 (LDSC) 和施泰格测试用于因果关系评估.
主要成果:
- 细菌的存在与LC风险增加有关 (OR=1.07),而Eubacteriaceae则显示有保护作用 (OR=0.82).
- 鉴定出13种血液代谢物是显著的调解物,包括囊和propionylcarnitine (保护性),以及特定的脂质/酸 (增加风险).
- 瓜诺辛核糖核酸合成的细菌途径与LC有关,由果糖氨酸 (11.38%介导) 介导.
- 宿主基因ROBO2被发现会影响LC患者的致病性肠道微生物丰度.
- 谷氨和谷氨酸的代谢途径被与LC相关的代谢产物丰富.
结论:
- 肠道微生物群在肺癌的发展中起着重要作用,其代谢产物充当部分媒介.
- 研究结果表明,对于肺癌风险较高的个体,潜在的饮食和生活方式干预措施.
- 这项研究强调了宿主遗传,肠道微生物组和肺癌发病过程中的代谢特征之间的复杂相互作用.
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