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在发育和损伤修复过程中,CEBPA限制了膜2型细胞的可塑性

Dalia Hassan^1,2, Jichao Chen¹

¹Department of Pulmonary Medicine, the University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.

Research square

|January 3, 2024

概括

转录因子CEBPA限制了肺膜2型细胞的可塑性. 成熟细胞中CEBPA的损失恢复了发育性可塑性,影响了肺再生和癌症研究.

科学领域:

肺部生物学肺部生物学
发展生物学发展生物学
细胞可塑性细胞可塑性

背景情况:

细胞可塑性,即改变细胞类型的能力,随着分化而下降,但在损伤修复过程中可以被重新激活.
肺膜2型 (AT2) 细胞在出生后正常成熟,从而降低了它们的可塑性.
了解控制AT2细胞可塑性的因素对于肺再生和癌症研究至关重要.

研究的目的:

研究转录因子CEBPA在调节小鼠AT2细胞可塑性的作用.
阐明CEBPA影响AT2细胞身份和受伤反应的机制.
探索CEBPA介导的可塑性对肺部发育和疾病的影响.

主要方法:

在野生型和Cebpa突变小鼠中分析AT2细胞转录和表观遗传特征.
利用仙台病毒感染诱导成熟的AT2细胞中的可塑性.
研究CEBPA与肺谱系转录因子NKX2-1.之间的相互作用.

主要成果:

通过维持AT2细胞程序和招募NKX2-1.CEBPA限制了AT2细胞的可塑性.
失去CEBPA使新生儿和成熟的AT2细胞能够减少AT2程序.
缺乏CEBPA的成熟AT2细胞在病毒感染时获得新生儿类可塑性,表达SOX9并增殖.
Cebpa 缺乏促进了 KRT8/CLDN4+ 过渡细胞的形成.

结论:

CEBPA作为AT2细胞可塑性的关键抑制剂,将发育史与细胞潜力联系起来.
这些发现揭示了CEBPA在维持AT2细胞身份方面的关键作用,以及它对肺部修复和瘤发生的影响.
针对CEBPA依赖性途径可能为肺再生和癌症治疗提供治疗策略.

关键词:

细胞的命运细胞的命运细胞的可塑性细胞的可塑性显基因组是一个表观基因组.肺部的发展和再生.单细胞多基因单细胞多基因转录控制转录控制

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