IKAROS和AIOLOS直接调节AP-1转录复合体,对NK细胞发育至关重要
Wilford Goh1, Harrison Sudholz2, Momeneh Foroutan2,3
1The Walter and Eliza Hall Institute of Medical Research. Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.
Nature immunology
|January 5, 2024
概括
伊卡洛斯 (IKZF1) 通过抑制Cish和调节亡,对自然杀手 (NK) 细胞的发展至关重要. 这项研究揭示了Ikaros家族成员控制NK细胞功能,细胞因子反应和AP-1活动.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 伊卡洛斯转录因子 (例如,IKZF1) 对适应性免疫非常重要.
- 伊卡洛斯在先天性淋巴发育中的作用,特别是自然杀手 (NK) 细胞的发展,仍然在很大程度上未被描述.
研究的目的:
- 研究Ikzf1/Ikaros在先天性淋巴发育中的功能,特别是NK细胞的发育.
- 阐明Ikaros调节NK细胞稳态和功能的分子机制.
主要方法:
- 在小鼠中Ikzf1的条件遗传失活化.
- 分析NK细胞种群,基因表达 (包括Cish,Bcl2l11,BIM,AP-1复合体成员) 和亡.
- 染色体免疫沉 (ChIP) 来评估Ikaros家族成员与向基因的直接结合.
主要成果:
- 条件删除Ikzf1会损害NK细胞淋巴发育,导致NK细胞淋巴缺血.
- IKZF1直接抑制了Cish,它是15-interleukin受体信号的负调节者,影响了细胞因子的反应.
- 缺少Ikzf1会增加Bcl2l11/BIM水平和内在亡,导致淋巴缺血症.
- 在Ikzf1-nullNK细胞中,转录发生了变化,AP-1复合体活性降低,Ikzf2/Helios和Ikzf3/Aiolos表达增加.
- 同时删除Ikzf1和Ikzf3进一步降低AP-1的活动,并导致外围NK细胞的完全丧失.
结论:
- 伊卡罗斯家族成员 (IKZF1,IKZF3) 是NK细胞淋巴发育和恒温的重要调节者.
- 伊卡洛斯通过调节亡,细胞因子信号传递 (通过Cish抑制) 和AP-1转录活动来控制NK细胞功能.
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