缺少KAT6A的T细胞可以缓解小鼠的炎症性肠病
Shi-Jia Huang1, Hui-Lin Ye2, Shuo Xu3
1Department of Orthodontics & Prosthodontics, the Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, 310000, China.
Cell & bioscience
|December 19, 2025
概括
在T细胞中的氨酸乙转移酶6A (KAT6A) 促进炎症性肠病 (IBD). 抑制KAT6A通过增强T细胞衰老和改变肠道微生物群来缓解结肠炎,提供了一种新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 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:
- 炎症性肠病 (IBD) 的发病率正在上升,T细胞与微生物群的相互作用与其病变产生有关.
- 导致IBD的表观遗传机制,特别是涉及T细胞和肠道微生物群,需要进一步阐明.
研究的目的:
- 为了研究在急性结肠炎期间T细胞中 lysine acetyltransferase 6A (KAT6A) 的作用.
- 探索T细胞功能的表观遗传调节和IBD病变的肠道微生物群组成.
主要方法:
- 从大肠炎患者的T细胞中评估KAT6A表达.
- 利用硫酸 (DSS) 诱导的大肠炎的小鼠模型与CD4+ T细胞特异性KAT6A淘汰 (TK6AKO).
- 分析了T细胞衰老,基因表达,肠道微生物群组成 (16S rRNA测序),以及抗生素治疗和便移植的影响.
主要成果:
- 在患有急性结肠炎的患者的T细胞中,KAT6A表达升高.
- 在TK6AKO小鼠中,结肠炎的严重程度降低,体重改善,炎症减少.
- KAT6A缺乏促进了CD4+T细胞衰老和改变了肠道微生物群组成,包括丰富了Akkermansia muciniphila.
- 抗生素治疗逆转了TK6AKO小鼠的保护作用,突出了微生物群的依赖性.
结论:
- CD4+ T 细胞中的 KAT6A 通过调节 T 细胞衰老和肠道微生物群组成来加剧结肠炎.
- 向KAT6A通过影响T细胞表观遗传学和肠道微生物组,为IBD提供了潜在的治疗策略.
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