转录因子Aiolos抑制了肠内皮质淋巴细胞的激活
Kentaro Yomogida1,2, Tihana Trsan2, Raki Sudan2
1Department of Pediatrics, University of Colorado Anschutz Medical Campus, Denver, CO, USA.
Nature immunology
|December 4, 2023
概括
艾洛斯 (编码为Ikzf3) 调节肠内皮质淋巴细胞 (IEL) 的激活. 它的缺乏会放大IEL效应器功能,增加小鼠对大肠炎的易感性.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 胃肠病学 胃肠病学
背景情况:
- 肠内皮质淋巴细胞 (IELs) 对肠道免疫非常重要.
- IELs需要精确调节它们的效应器功能.
- 控制IEL激活的分子机制尚未完全理解.
研究的目的:
- 调查Aiolos (Ikzf3) 在调节IEL激活和效应器功能的作用.
- 阐明Aiolos控制IELs的分子机制.
- 评估Aiolos缺乏对IEL介导的免疫反应和肠道炎症的影响.
主要方法:
- 产生和分析缺少Ikzf3 (Ikzf3-/-) 的小鼠.
- 流细胞计和IELs的单细胞RNA测序.
- 染色体可访问性和基因素乙化试验.
- 在小鼠大肠炎易感性的评估.
主要成果:
- 艾洛斯在CD8αα+IEL中的缺乏导致NK受体,细胞毒性分子,细胞因子和化学因子的表达增加.
- 单细胞RNA测序揭示了Ikzf3-/- IELs中放大效应器机制.
- 缺少Ikzf3增加了IEL对白素-15的反应,并改变了STAT5和RUNX结合部位附近的染色质可访问性.
- 在小鼠中,Ikzf3 缺乏导致对结肠炎的易感性增加.
结论:
- 艾奥洛斯作为IEL激活和效应器功能的关键调节器.
- 艾奥洛斯控制IEL效应器程序,部分是通过调节介质蛋白-15信号通路.
- 在IEL中Aiolos功能的失调有助于肠道炎症.
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