探索486血清代谢物和系统性红斑狼之间的因果关系:一个双向的门德尔随机化研究
1Department of Dermatology and Venereology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
Frontiers in molecular biosciences
|November 29, 2023
概括
这项研究使用了门德尔的随机化来调查血液代谢物和系统性红斑狼 (SLE) 之间的因果关系. 它发现24种代谢物可能会增加SLE风险,51种受SLE影响,确定具有双向因果关系的特定代谢物和途径.
科学领域:
- 遗传学和系统生物学 系统生物学
- 代谢学 代谢学 代谢学
- 免疫学 免疫学 免疫学
背景情况:
- 观察性研究表明,循环中的代谢物和系统性红斑狼 (SLE) 之间存在关联.
- 代谢物和SLE之间的因果关系和潜在机制在很大程度上仍未被阐明.
- 门德尔随机化 (MR) 提供了一个强大的方法,可以从观测数据中推断因果关系.
研究的目的:
- 使用双向门德尔随机化 (MR) 设计,研究人类血液代谢物和全身性红斑狼 (SLE) 之间的因果关系.
- 为了确定与SLE风险和进展因果相关的特定代谢物和代谢途径.
- 探索观察到的关联背后的潜在机制.
主要方法:
- 一项采用全基因组关联研究 (GWAS) 数据的两样双向MR研究.
- 从7,824名参与者的GWAS中分析了486种人类血液代谢物.
- 来自欧洲人中SLE的大规模GWAS (5,201例,9,066例对照) 的结果数据,包括7,071,163个SNP.
- 使用逆方差加权 (IVW) 模型进行初级分析,并进行全面的灵敏度分析 (异质性,性,留出一个,LDSC回归).
主要成果:
- 24种代谢物 (脂质,碳水化合物,异生菌,氨基酸通路) 显示有可能增加SLE风险 (p < 0.05).
- 51种代谢物 (氨基酸,能量,异生菌,,脂质通路) 的代谢变化受到SLE的影响 (p < 0.05).
- 棕酸盐,异基酸盐和硫酸盐表明与SLE的双向因果关系. 重要的途径包括胆酸生物合成 (前进MR) 和烯酸/酸,贝他因和糖脂代谢 (反向MR).
结论:
- 特定的循环代谢物可能通过影响免疫反应或作为疾病进展中的中间体而导致SLE发展.
- 已识别的代谢物和途径有可能成为SLE的辅助诊断生物标志物.
- 这些发现支持使用特定代谢物来评估SLE疾病进展和治疗疗效.
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