2型糖尿病风险中的生活方式行为和免疫细胞特征:孟德尔的随机化研究
Fanjing Wang1,2, Yixuan Lin1,3, Chuqiao Shen1
1The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, China.
Journal of diabetes and metabolic disorders
|March 2, 2026
概括
这项研究发现,干果摄入量和强度运动降低了2型糖尿病 (T2DM) 风险,而吸烟增加了风险. 免疫细胞与T2DM的联系仍在调查中.
科学领域:
- 人类遗传学 人类遗传学
- 免疫学 免疫学 免疫学
- 代谢疾病 代谢疾病
背景情况:
- 2型糖尿病 (T2DM) 是一种复杂的代谢障碍,受生活方式和免疫因素的影响.
- 了解生活方式,免疫特征和T2DM之间的因果关系对于预防和治疗策略至关重要.
- 门德尔随机化 (MR) 提供了一种强大的方法,可以使用遗传数据来调查这些因果关系.
研究的目的:
- 调查各种生活方式行为和免疫细胞特征与T2DM发展风险之间的因果关系.
- 探索潜在的免疫媒介途径,有助于T2DM发展.
- 使用双向的双样本孟德尔随机化和调解分析,以获得强大的因果推理.
主要方法:
- 在大型全基因组关联研究 (GWAS) 的总结统计数据上采用双向双样本的门德尔随机化 (MR) 和调解分析.
- 评估了48种生活方式行为,731种免疫类型和T2DM,并将特定的p值值用于遗传仪器选择.
- 使用逆方差加权 (IVW) 模型,并使用MR-Egger拦截和MR-PRESSO测试评估型,并对FDR进行显著性校正.
主要成果:
- 证实了三种生活方式行为对T2DM的因果关系:干果摄入 (保护性),劳累性运动 (保护性) 和吸烟开始 (增加风险).
- 确定了一种免疫特征 (在IgD+ CD24+ B细胞上CD25),与T2DM风险有确定的关联,以及暗示性和探索性关联.
- 发现了一个确定的生活方式-免疫联系 (吸烟启动和CD25在CD39+CD4+T细胞上) 和暗示性/探索性关联,没有完全确认的调解途径.
结论:
- 提供了对T2DM风险的因果生活方式影响的高可靠性遗传证据.
- 免疫介导的连接生活方式和T2DM的途径仍然在很大程度上是探索性的,因为目前免疫细胞GWAS的统计能力有限.
- 需要对更大的免疫细胞GWAS队伍进行进一步的研究,以确认T2DM中潜在的免疫媒介机制.
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