单细胞基因组学揭示了Th17细胞致病性的关键调节者
Jellert T Gaublomme1, Nir Yosef2, Youjin Lee3
1Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA; Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138, USA.
Cell
|November 27, 2015
概括
在自身免疫性脑膜炎 (EAE) 中,研究T助手17 (Th17) 细胞异质性揭示了致病性的分子驱动因素. 这种细胞多样性可以引导向疗法抑制有害的Th17细胞,同时保留有益的Th17细胞.
科学领域:
- 免疫学
- 基因组学
- 神经科学
背景情况:
- 免疫细胞亚型,如T助手17 (Th17) 细胞,表现出在基因组水平上不完全理解的显著异质性.
- 了解这种细胞多样性对于剖析自身免疫性疾病中的免疫反应至关重要.
研究的目的:
- 研究 Th17 细胞中异质性和致病性的分子机制.
- 识别与Th17细胞致病性和自身免疫脑炎 (EAE) 相关的基因.
主要方法:
- 使用单细胞RNA测序 (scRNA-seq) 来分析EAE期间来自中枢神经系统 (CNS) 和淋巴结的Th17细胞.
- 在致病和非致病条件下,Th17细胞也在体外分化.
- 计算分析整合了体内和体外数据以绘制细胞状态并识别关键基因.
- 使用淘汰赛小鼠模型验证基因功能.
主要成果:
- 在 Th17 种群中,scRNA- seq 揭示了细胞状态的范围,将体内异质性与体内分化条件联系起来.
- 确定了控制Th17细胞致病性和易受EAE的关键基因.
- 四种新基因 (Gpr65,Plzp,Toso和Cd5l) 在Th17细胞功能和自身免疫性中的作用得到了验证.
结论:
- Th17细胞的细胞异质性显著影响它们在EAE等自身免疫环境中的功能.
- 已识别的分子驱动因素为选择性抑制致病Th17细胞提供了洞察力.
- 这种方法具有开发非致病性,组织保护性Th17细胞的向治疗的潜力.
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