在肠道移植受体中,抑制T辅助型17细胞的反应与异体移植排斥
Leonid Belyayev1, Jiman Kang2, Mohammed Sadat3
1MedStar Georgetown Transplant Institute, MedStar Georgetown University Hospital and the Center for Translational Transplant Medicine, Georgetown University Medical Center, 3800 Reservoir Road NW, Washington, DC 20007, USA; Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD 20814, USA.
Human immunology
|March 17, 2024
概括
肠移植排斥涉及T调节 (Treg) 细胞,具有类似T辅助17 (Th17) 的表型. 这些细胞表达纯能标记物,表明在排斥期间在免疫抑制中发挥作用.
科学领域:
- 免疫学 免疫学 免疫学
- 移植生物学 移植生物学
- 细胞生物学 细胞生物学
背景情况:
- 肠移植 (ITx) 排斥与T助手17 (Th17) 细胞透有关.
- 调节T细胞 (Treg) 调节Th17反应,但它们在异种移植排斥过程中的表型尚不清楚.
研究的目的:
- 在肠道异种移植排斥中表型特征Treg细胞.
- 研究Treg细胞在ITx排斥过程中调节Th17反应中的作用.
主要方法:
- 流细胞计分析Th17和Treg细胞表面受体,细胞因子和转录因子.
- RNA测序 (RNAseq) 来识别关键的排斥途径.
- 烧序测定以评估Treg特异性脱甲基化区域 (TSDR) 的表观遗传稳定性.
主要成果:
- 肠道异构移植排斥显示Treg细胞透向Th17表型 (ROR-γt表达,细胞因子产生) 两极化.
- 这些Treg细胞保持了表观遗传稳定性 (FoxP3-TSDR甲基化).
- 观察到功能Treg和纯能信号基因 (例如CD39) 的上调,这表明Th17抑制性质.
结论:
- 肠移植排斥涉及Treg细胞表现出类似Th17的表型.
- 这些两极分化的Treg细胞共同表达调控性纯能标记物,有助于在排斥时免疫抑制.
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