多基因测序揭示了与原发性硬化胆管炎相关的特异性基因表达和表观遗传变异 治疗先验儿科性结肠炎的发展
Alejandra Rodriguez-Sosa1, Ololade Lawal1, Ciaran McDonnell1
1Epigenetics of Gastrointestinal Diseases Research Group, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland.
Gastro hep advances
|February 13, 2025
概括
显著的基因表达和DNA甲基化变化区分了原发性结肠炎与性结肠炎 (PSC-UC) 与儿童的性结肠炎 (UC). 这些分子标记可以预测UC患者早期的PSC发展.
科学领域:
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 初级硬化性胆道炎 (PSC) 是一种渐进的胆固醇性肝病,通常与性结肠炎 (UC) (PSC-UC) 同时发生.
- 诊断PSC-UC具有挑战性,其分子基础在很大程度上仍然未知.
- 识别分子差异对于早期诊断和了解疾病进展至关重要.
研究的目的:
- 在未经治疗的儿科患者中,在PSC-UC和UC之间识别基因表达和DNA甲基化中的明显分子变化.
- 探索潜在的分子生物标志物来预测UC患者的PSC发展.
主要方法:
- 甲基捕获测序和mRNA测序在患有UC (n=10),PSC-UC (n=10) 和健康对照组 (n=10) 的儿科患者的结肠粘膜活检上进行.
- 进行了差异基因表达和DNA甲基化分析.
- 评估了表观遗传年龄.
主要成果:
- 与UC患者相比,PSC-UC患者表现出明显更大的基因表达变化.
- 在PSC-UC中炎症和免疫相关基因的表达受到主转录调节器 (NLRP3,DLL1) 和转录因子 (RELA,Myogenin,FOXO1) 的调节.
- 在PSC-UC和UC之间确定了2000多个不同的甲基化区域,主要是在促进器和增强器区域. 发现KLHL17在PSC-UC中被低甲基化和上调.
结论:
- 这项研究揭示了独特的基因表达和DNA甲基化特征,使儿科PSC-UC与诊断时的UC有所区别.
- 涉及转录调节者的确定的分子机制表明了UC中PSC的潜在早期预测生物标志物.
- 为了证实这些发现,需要在更大的队列中进一步验证.
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