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Updated: Jul 23, 2025

Standardized Methods for Measuring Induction of the Heat Shock Response in Caenorhabditis elegans

Standardized Methods for Measuring Induction of the Heat Shock Response in Caenorhabditis elegans

Published on: July 3, 2020

在热应激后转录组的重编程调解了Caenorhabditis elegans中的热激素

Fan Xu^1,2, Ruoyao Li¹, Erika D von Gromoff¹

¹Bioinformatics and Molecular Genetics (Faculty of Biology), Albert-Ludwigs-University Freiburg, Freiburg, 79104, Germany.

Nature communications

|July 13, 2023

概括

在虫中,短暂的热应激会重新编程基因表达,从而带来长期益处. 内核核酶ENDU-2蛋白驱动这种关键的后压力转录重编程,延长寿命并改善抗压能力.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
衰老研究研究衰老研究

背景情况:

暂时的压力可以诱导持久的细胞变化.
在Caenorhabditis elegans中,热涉及延长寿命和在短暂的热冲击后增强抗压能力.
这些长期影响背后的分子机制尚未完全理解.

研究的目的:

为了研究高温热应激对虫转录组的长期影响.
确定参与后压力转录重编程的关键分子参与者.
了解这些变化是如何促进热的有益作用的.

主要方法:

在热应激后对Caenorhabditis elegans的转录组分析.
调查内核酶ENDU-2和热冲击因子1 (HSF-1) 的作用.
对ENDU-2与染色质的同局部化研究及其与RNA聚合酶II的相互作用.

主要成果:

在急性热冲击反应后,热激素诱导了深刻的转录重编程.
这种重编程依赖于内核酶ENDU-2,而不是HSF-1.
ENDU-2 与染色质和RNA聚合酶II相互作用,以调节压力后的转录.
如果不能激活这种后应激反应,就会消除对体温的好处,而不会影响急性耐热性.

结论:

RNA结合蛋白ENDU-2调解了短暂热应激的长期影响.
在暴露于压力后,ENDU-2会重新编程转录组,从而赋予hormetic的好处.
这项研究揭示了一种通过转录调节来长期适应压力的新机制.

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