调节性T细胞从自身反应性T细胞进行表观遗传重编程,缓解已建立的自身免疫力.
Tyler R Colson1, James J Cameron1, Hayley I Muendlein2
1Graduate Program in Immunology, Tufts Graduate School of Biomedical Sciences, Boston, MA 02111, USA.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
将效应性T细胞 (Teff) 重编程为调节性T细胞 (Tregs) 提供了一种治疗自身免疫性疾病的新方法. 这些重编程的Tregs是稳定的,有效地对抗神经炎症.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞和分子免疫学 细胞和分子免疫学
- 这是一种自身免疫力.
背景情况:
- 将自身反应的CD4+效应T (Teff) 细胞重新编程成免疫抑制调节T (Treg) 细胞是对自身免疫性疾病的潜在治疗方法.
- 这些重编程的Tregs在炎症环境中的稳定性和功能尚不清楚.
研究的目的:
- 通过对Teff细胞的表观遗传修饰生成的重编程Tregs的稳定性和有效性的研究.
- 将这些新型重编程Tregs的治疗潜力与基于Treg的现有策略进行比较.
主要方法:
- 在Teff细胞中去甲基化核心Treg身份基因,以创建血统稳定的Effector T细胞重编程Tregs (ER-Tregs).
- 在自免疫神经炎症在疾病发作前后的小鼠模型中采用ER-Tregs的转移.
- 对ER-Treg对Foxp3-过度表达的Teff细胞,诱导Tregs和内源Tregs的疗效进行比较分析.
主要成果:
- 在炎症条件下,ER-Tregs表现出血统稳定性.
- 单次转移ER-Tregs可以预防和阻止小鼠自身免疫神经炎症.
- 与其他Treg类型相比,ER-Tregs提供了优越的保护,这是由于遗传的自身抗原特异性和保留的效应器功能.
结论:
- 自主反应的Teff细胞的表观遗传重编程产生强大而稳定的Tregs.
- ER-Tregs代表了治疗耐火性自身免疫疾病 (如神经炎症) 的有前途的治疗策略.
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