主体基因型与微生物群落相互作用,调节人类肠道中的基因表达
medRxiv : the preprint server for health sciences
|February 12, 2026
概括
主体遗传和肠道微生物组合之间的相互作用影响基因表达和炎症性肠病 (IBD) 风险. 针对特定的微生物可能有助于降低基于个体遗传构成的IBD风险.
科学领域:
- 基因组学就是基因组学.
- 微生物组研究 微生物组研究
- 人类遗传学 人类遗传学
背景情况:
- 炎症性肠病 (IBD) 涉及慢性肠道炎症,与遗传因素和改变的肠道微生物组有关.
- 宿主基因与肠道微生物组在调节肠道基因表达和IBD风险方面的相互作用尚未完全理解.
研究的目的:
- 研究基因型x微生物组 (GxM) 相互作用在塑造人类肠道基因调节中的作用.
- 确定GxM相互作用对炎症性肠病 (IBD) 风险的贡献.
主要方法:
- 对IBD患者和对照群的公开可用的多omics数据 (宿主基因型,基因表达,16S rRNA微生物组) 的分析.
- 表达式定量特征位置 (eQTL) 映射和计算精细映射以识别因果变异.
- 整合GxM eQTLs与IBD,克罗恩病 (CD) 和性结肠炎 (UC) GWAS数据使用转录基因组广泛关联研究和局部化.
主要成果:
- 确定了许多宿主基因与eQTLs在直肠和大肠.
- 发现了显著的基因型x微生物群 (GxM) 相互作用,影响宿主基因表达,涉及不同的微生物种群,如酸盐生产者和硫酸盐减少剂.
- 发现GxM调节的变异与宿主基因有关,这些基因与IBD,克罗恩病 (CD) 和性结肠炎 (UC) 风险有关.
结论:
- 证明了在肠道中宿主基因表达受到微生物组合的调节.
- 提供证据表明,特定的微生物种类可以放大或缓冲IBD的遗传倾向.
- 建议潜在的治疗策略,包括基于宿主基因型的向微生物干预,以减轻IBD风险.
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