独特的表观基因组景观是组织特异性记忆T细胞分化的基础
Frank A Buquicchio1, Raissa Fonseca2, Patrick K Yan3
1Department of Pathology, Stanford University, Stanford, CA 94305, USA; Program in Immunology, Stanford University, Stanford, CA 94304, USA; Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA 94158, USA.
Immunity
|July 23, 2024
概括
组织内存T (TRM) 细胞和循环记忆T (TCIRC) 细胞表现出不同的表观遗传特征. 这项研究揭示了关键的调节器和表观遗传特征,这些特征定义了TRM细胞在各器官的发育和功能.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 记忆CD8+T细胞池包括具有专门功能的异质子集.
- 了解组织内存T (TRM) 细胞异质性的表观遗传基础至关重要.
研究的目的:
- 研究各种非淋巴细胞器官和循环中的记忆CD8+T细胞的表观遗传景观.
- 为了确定组织内存T (TRM) 细胞发育的调节者和表观遗传特征.
- 为了比较TRM细胞,循环记忆T (TCIRC) 细胞和耗尽的T (TEX) 细胞的表观遗传状态.
主要方法:
- 单细胞转化酶可访问的染色体测序 (scATAC-seq) 应用于来自七个非淋巴细胞器官和循环中的CD8+T细胞.
- 在四种不同的感染模型中分析表观遗传景观.
- 识别转录调节剂和表观遗传特征.
主要成果:
- 组织内存T (TRM) 细胞和循环记忆T (TCIRC) 细胞遵循不同的表观遗传轨迹.
- 确定了特定器官的转录调节器 (FOSB,FOS,FOSL1,BACH2) 和一个共同的TRM表观遗传特征.
- 最终耗尽的T (TEX) 细胞具有独特的表观遗传特征,与TRM细胞不同.
结论:
- 表观遗传重编程驱动了不同的组织适应的记忆CD8+T细胞状态的发展.
- 染色体可访问性变化对于定义TRM细胞专业化和功能至关重要.
- 这项研究为了解记忆T细胞异质性提供了全面的表观遗传资源.
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