不同的发育途径产生功能上不同的自然杀手细胞种群
Yi Ding1, Marieke Lavaert1, Simon Grassmann2
1T Cell Biology and Development Unit, Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
Nature immunology
|June 13, 2024
概括
确定了自然杀手 (NK) 细胞发育的两个不同的途径. 早期NK原始细胞 (ENKPs) 和先天性淋巴细胞前体 (ILCPs) 在小鼠中产生功能上不同的NK细胞,可能在人类中保存.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
背景情况:
- 自然杀手 (NK) 细胞对于消除感染病毒和瘤细胞至关重要.
- NK细胞的发育通常涉及与其他先天性淋巴细胞 (ILC) 共同的前体.
研究的目的:
- 识别和描述不同的NK细胞发育途径.
- 为了研究从单独的前体中获得的NK细胞之间的功能差异.
- 探索人类NK细胞中这些通路的保存.
主要方法:
- 识别了一种新的早期NK原始体 (ENKP) 种群.
- 对ENKP衍生的NK细胞 (ENKP_NK) 和ILCP衍生的NK细胞 (ILCP_NK) 的转录分析.
- 开发表面标记物组合,以隔离小鼠中的ENKP_NK和ILCP_NK种群.
- 功能测试评估NK细胞对病毒和细菌感染的反应.
主要成果:
- 恩基细胞独立于ILCPs生成NK细胞,具有不同的转录特征.
- 特定的表面标记物成功分离了ENKP_NK和ILCP_NK子集.
- 源自ENKP的NK细胞是对小鼠细胞巨病毒的关键反应者,而源自ILCP的NK细胞则是对沙门氏菌和简单疹病毒的优越IFNγ生产者.
- 人类CD56暗和CD56明亮NK细胞的转录方式与小鼠ENKP_NK和ILCP_NK细胞相似.
结论:
- 在小鼠中,NK细胞有两个不同的发育途径,它们来自ENKPs和ILCPs.
- 这些途径产生功能性专门的NK细胞子集,在免疫中发挥不同的作用.
- 有证据表明,这些独特的NK细胞发育途径在人类中得到保护.
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