在炎症环境中通过FOXP3表达稳定人类CD8+Treg
Séverine Bézie1, Jenny Greig1, Sonia Salle1
1Nantes Université, CHU Nantes, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, Nantes, France.
European journal of immunology
|February 3, 2026
概括
调节性T细胞 (Tregs) 对免疫媒介疾病有希望,但稳定性是关键. 这项研究揭示了炎症如何影响CD8+Tregs,并识别了FOXP3和其他分子,以提高它们的细胞治疗稳定性.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 治疗方法 治疗方法
背景情况:
- 调控性T细胞 (Tregs) 对免疫媒介疾病具有治疗潜力.
- 转移的Tregs在炎症环境中的稳定性和持久性是关键的挑战.
- 由于细胞因子受体表达,CD8+ Tregs具有可塑性,这引发了关于其稳定性的疑问.
研究的目的:
- 研究CD8+ Tregs对促炎信号的敏感性.
- 确定FOXP3在维持CD8+Treg稳定性的作用.
- 确定分子点,以提高Treg稳定性用于细胞治疗.
主要方法:
- 用各种细胞因子 (IL-6,TNFα,IFNγ,TGFβ,IL-1β,IL-21,IL-23) 进行短期和长期细胞培养.
- 转录组分析以评估基因表达的变化,包括FOXP3.
- 晶体病毒转导以强制FOXP3表达或引入mTOR调节器 (SESN2,FLCN) 和SAGA复合组件 (TAF5L).
- 在炎症条件下对Treg抑制活性 in vitro和表型稳定性的评估.
主要成果:
- 暴露于TGFβ与IL-6/IL-1β或IL-21/IL-23相结合,导致CD8+Tregs中显著的转录基因变化和FOXP3下调.
- 强制FOXP3表达稳定了Treg表型,并在体外增强了抑制活性.
- 在FOXP3淘汰赛中,CD8+ Tregs维持了抑制功能长达2周.
- 对SESN2,FLCN或TAF5L的转导促进了FOXP3的表达,单独SESN2和TAF5L可以增强抑制功能.
结论:
- 促炎性细胞因子,特别是TGFβ与其他细胞结合,可以通过降低FOXP3.3调节来破坏CD8+Tregs的稳定性.
- 在炎症条件下,FOXP3在维持CD8+ Treg稳定性和功能方面发挥着至关重要的作用.
- 向FOXP3,SESN2,FLCN或TAF5L是一个有前途的战略,用于开发更稳定,更有效的基于Treg的细胞疗法.
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