细胞内膜网膜应激干扰了1型调节T细胞的发展
Baisui Feng1, Huazhen Liu2,3, Wenkai Yao2,3
1Department of Gastroenterology, The Second Affiliated Hospital, Zhengzhou University, Zhengzhou, China.
概括
细胞内膜网膜 (ER) 应激和环境污染物MNP损害了性结肠炎 (UC) 患者的调节性T细胞 (Treg) 发育. 抑制Rnf20恢复Tr1细胞的发育,为UC提供潜在的治疗标.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 细胞生物学 细胞生物学
背景情况:
- 细胞内膜网膜 (ER) 应激是一种常见的细胞对各种刺激的反应.
- 在性结肠炎 (UC) 病原发生过程中,ER压力的作用尚不清楚.
- 调控性T细胞 (Tregs) 的放松调控与UC的发展有关.
研究的目的:
- 研究ER应激对UC患者Treg发育的影响.
- 阐明ER应激影响Treg功能的机制.
- 确定潜在的治疗点,以恢复UC中的Treg功能.
主要方法:
- 从UC患者和健康对照 (HC) 中分离CD4+CD25-T细胞.
- 使用RNA测序和RT-qPCR评估ER与压力相关的分子表达.
- 在体外诱导ER压力和暴露于3-甲基-4-尼托醇 (MNP).
主要成果:
- 与HC相比,UC患者在外围CD4+CD25-T细胞中表现出ER压力.
- 在CD4+CD25-T细胞中,MNP加剧了ER压力诱导的IL-10水平的降低.
- Rnf20调解了MNP和ER压力的协同效应,抑制了Tr1细胞的发育.
- 在UC患者中,Rnf20抑制可以从CD4+CD25-T细胞中拯救Tr1细胞的发育.
结论:
- 结合ER压力和MNP暴露会破坏Tr1细胞的发育.
- 在UC的Treg功能障碍中,Rnf20起着至关重要的作用.
- 抑制Rnf20可以恢复UC患者的Tr1细胞发育,这表明了治疗途径.
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