SMYD5 是轻度低温反应的调节者
Salvor Rafnsdottir1, Kijin Jang1, Sara Tholl Halldorsdottir1
1Louma G. Laboratory of Epigenetic Research, Faculty of Medicine, University of Iceland; Reykjavik, Iceland.
bioRxiv : the preprint server for biology
|June 19, 2023
概括
轻度低温反应 (MHR) 是由SMYD5调节的,它是一种基因组甲基转移酶. 这一发现揭示了质子修饰如何整合细胞反应和潜在的神经保护疗法的环境线索.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生理学 生理学 生理学
背景情况:
- 轻度低温反应 (MHR) 对于在暴露在寒冷中维持恒温至关重要.
- MHR与治疗性低温症中观察到的神经保护有关.
- MHR的转录调节在很大程度上是未知的.
研究的目的:
- 确定轻度低温反应 (MHR) 的关键调节者.
- 调查MHR中质子修饰的作用.
- 探索神经保护的潜在治疗应用.
主要方法:
- 转发 CRISPR-Cas9 突变发生屏幕.
- 基因组 lysine 甲基转移酶 SMYD5.5 的鉴定.
- 在SP1位点和全球范围内分析H3K36me3水平.
主要成果:
- 确定SMYD5是MHR的调节者.
- 在euthermia时,SMYD5抑制了MHR基因SP1.
- 在SP1位点的温度依赖的H3K36me3水平表明MHR的基因组修饰调节.
- 另外还发现了37个受SMYD5调节的温度依赖基因.
结论:
- 基斯基因的修饰调节了哺乳动物的MHR.
- 在MHR中,SMYD5发挥了更广泛的作用.
- 研究结果为整合潜在神经保护疗法的环境线索和遗传电路提供了洞察力.
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