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一个TFEB-TGFβ轴系统调节隔膜,干细胞弹性,并保护免受衰老的状态

Tim J Nonninger¹, Jennifer Mak¹, Birgit Gerisch¹

¹Max Planck Institute for Biology of Ageing, Cologne, Germany.

|June 30, 2025

概括

主调节器hlh-30/TFEB对于Caenorhabditis elegans来说至关重要,它可以在禁食诱导的成年生殖间隙 (ARD) 中存活. 突变物进入一种类似衰老的状态,突出了TFEBEB.

科学领域:

发展生物学发展生物学
遗传学遗传学是一个
衰老研究研究衰老研究

背景情况:

隔离是一种生存策略,使生物能够忍受不利条件.
在饥饿时,Caenorhabditis elegans进入成人生殖隔膜 (ARD),在重新养时再生.
调节隔膜退出和干细胞维护的分子机制仍然不完全理解.

研究的目的:

研究ARD主调节器hlh-30/TFEB在断期存活率和干细胞维护中的作用.
为了识别控制隔膜退出和预防衰老的遗传途径.
探索TFEB在哺乳动物隔膜模式中的功能保护.

主要方法:

在Caenorhabditis elegans中转发遗传选.
在野生类型和突变菌株中,对断和再养期间的干细胞特征进行分析.
评估衰老标记,DNA损伤,线粒体功能和代谢特征.
对TFEB-TGFβ信号轴的研究.

主要成果:

在ARD和再养期间,hlh-30/TFEB突变物在类似衰老的状态下被捕.
突变生殖系干细胞表现出DNA损伤,核扩张,细胞循环停止和线粒体功能障碍.
在突变分子中观察到免疫和代谢特征的调节失调,老化标记的升高和过早衰老.
一个TFEB-TGFβ信号轴被确定为对隔离,干细胞寿命和衰老的系统调节器.

结论:

ARD主调节器hlh-30/TFEB对于防止干细胞衰老和生物体衰老在隔离期间至关重要.
TFEB-TGFβ信号轴通过将营养物质的可用性与新陈代谢和生长联系起来来协调隔膜退出.
在C. elegans的发现提供了对哺乳动物生物学相关的断和衰老的保存机制的见解,包括小鼠胚胎和人类癌症断.

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