孟德尔随机化
DNA甲基化
炎症性肠病
甲基化
溃疡性结肠炎
发病机制
免疫学
克罗恩病
疾病
全基因组关联研究
医学
前瞻性队列研究
内科学
胃肠病学
生物
生物信息学
DNA
基因
遗传学
基因表达
单核苷酸多态性
基因型
遗传变异
作者
Han Zhang,Rahul Kalla,Jie Chen,Jianhui Zhao,Xuan Zhou,Alex Adams,Alison Noble,Nicholas T. Ventham,Judith Wellens,Gwo–Tzer Ho,Malcolm G. Dunlop,Jan Krzysztof Nowak,Yuan Ding,Zhanju Liu,Jack Satsangi,Evropi Τheodoratou,Xue Li
标识
DOI:10.1038/s41467-024-44841-y
摘要
Abstract This work aims to investigate how smoking exerts effect on the development of inflammatory bowel disease (IBD). A prospective cohort study and a Mendelian randomization study are first conducted to evaluate the association between smoking behaviors, smoking-related DNA methylation and the risks of Crohn’s disease (CD) and ulcerative colitis (UC). We then perform both genome-wide methylation analysis and co-localization analysis to validate the observed associations. Compared to never smoking, current and previous smoking habits are associated with increased CD ( P = 7.09 × 10 −10 ) and UC (P < 2 × 10 −16 ) risk, respectively. DNA methylation alteration at cg17742416 [ DNMT3A ] is linked to both CD ( P = 7.30 × 10 −8 ) and UC ( P = 1.04 × 10 −4 ) risk, while cg03599224 [ LTA/TNF ] is associated with CD risk ( P = 1.91 × 10 −6 ), and cg14647125 [ AHRR ] and cg23916896 [ AHRR ] are linked to UC risk ( P = 0.001 and 0.002, respectively). Our study identifies biological mechanisms and pathways involved in the effects of smoking on the pathogenesis of IBD.
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