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Ace2通过抑制Nlrp3介导的热灭菌来保护胚胎造血干细胞和原生细胞的产生

Jun Xia^1,2, Lingxue Shen¹, Yining Liu²

¹Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao 266237, China.

Proceedings of the National Academy of Sciences of the United States of America

|December 5, 2025

概括

ангиотензин转化酶2 (Ace2) 调节胚胎血干细胞的发育. 丢失Ace2通过激活炎症途径来破坏这个过程,但抑制可以恢复干细胞的产生.

科学领域:

发育生物学是发展生物学.
血液形成血液形成血液形成
免疫学免疫学免疫学

背景情况:

造血干细胞和原始细胞 (HSPCs) 在胚胎发生过程中从血源性内皮产生的.
虽然炎症是必要的,但过度的免疫激活会阻碍HSPC的发展.

研究的目的:

研究血管酶转化酶2 (Ace2) 在调节胚胎造血过程中的作用.
阐明Ace2影响HSPC出现的机制.

主要方法:

研究了Ace2缺乏的斑马鱼和小鼠模型.
利用转录基因分析分析细胞信号通路.
使用的NLRP3和Caspase-1的药理抑制.
已使用的外源性血管素- ((1-7) (Ang- ((1-7)).

主要成果:

缺少Ace2损害了血源性内皮的特异性,并减少了HSPC的产生.
失去了Ace2激活了Nlrp3炎症酶信号和内皮细胞中的pyroptosis.
抑制Nlrp3/Caspase-1或Ang-(1-7) 治疗挽救了Ace2缺乏胚胎中HSPC的出现.
在血液形成中ACE2的作用是从斑马鱼到小鼠的进化保存.

结论:

Ace2 是胚胎造血的一个关键的抗炎调节剂.
ACE2/Ang-(1-7) /Nlrp3-pyroptosis通路对于维持HSPC发育的允许性炎症环境至关重要.
针对这一轴可能为炎症性造血性疾病提供治疗策略.

关键词:

一个ACE2ACE2ACE2 在 Nlrp3 信号传输中.造血干细胞和原始细胞.热致灭 (pyroptosis) 是一种致的过程.斑马鱼是一种斑马鱼.

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