在哺乳动物肺部发育过程中,BRD4促进内皮细胞命运.
Hongbo Wen1, Derek C Liberti1, Prashant Chandrasekaran1
1CHOP Cardiovascular Institute, The Children's Hospital of Philadelphia, Philadelphia, United States of America.
JCI insight
|February 3, 2026
概括
含原体蛋白4 (BRD4) 对于哺乳动物的肺部发育至关重要,调节早期的器官生成和调节细胞命运. 它的缺失破坏了肺形态发生和气道细胞特异,突出显示了它的多功能作用.
科学领域:
- 发展生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 肺部发育需要精确调节细胞分化,信号通路和形态发生.
- 表观遗传和转录调节者对于指导细胞在器官生成过程中的命运至关重要.
研究的目的:
- 为了研究基体含蛋白4 (BRD4) 在哺乳动物肺部发育和细胞命运决定中的作用.
- 阐明BRD4在肺形态发生和细胞特异中的特定功能.
主要方法:
- 具有内皮和时间BRD4缺失的遗传小鼠模型.
- 人类胚胎干细胞 (hESC) 衍生的肺器官模型.
- 组织探索剂和单细胞转录组分析.
主要成果:
- 肺内皮中的BRD4删除损害了表皮-介质细胞交叉,破坏了肺的模式和分支.
- 暂时的BRD4删除导致了气道和膜上皮细胞特异性的特定阶段缺陷.
- 在hESC衍生的有机体中,BRD4促进了肺内皮分化到气道系.
结论:
- BRD4对于哺乳动物的肺形态发生和细胞命运至关重要.
- BRD4在早期的肺组织生成和细胞特异化中起着独特的作用.
- 在肺部发育中,BRD4具有多功能性和进化保存的作用.
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