运动诱导的剪切应力驱动了mRNA的体外翻译
Daniel Conde1,2, Mario A Garcia3, Manuel Gomez1,4
1Clinical Applied Physiology (CAPh) Lab, The University of Texas at El Paso, El Paso, TX 79968, USA.
Current issues in molecular biology
|September 27, 2024
概括
有氧运动通过增加内皮氧化合成酶 (eNOS) 和sirtin 1 (SIRT1) 蛋白质来促进血管健康. 运动诱导的内皮切割应力 (ESS) 与基因表达有反向的关系,这表明它在蛋白质合成中起着新的作用.
科学领域:
- 心血管生物学 心血管生物学
- 内皮细胞功能 内皮细胞功能
- 运动生理学 运动生理学
背景情况:
- 血管内皮对于预防心血管疾病至关重要.
- 内皮健康依赖于像eNOS,SIRT1和ET1这样的蛋白质及其基因 (NOS3,SIRT1,EDN1).
- 众所周知,有氧运动可以改善内皮功能,可能是通过增加内皮剪切应力 (ESS).
研究的目的:
- 研究运动诱导的内皮切割应激 (ESS) 强度对关键内皮蛋白和基因表达的急性影响.
- 探索ESS不同水平与内皮功能标志物的调节之间的关系.
主要方法:
- 人类静脉内皮细胞 (HUVECs) 接受了受控的ESS水平 (休息,低,中等,高).
- 蛋白质表达的测量是使用光 Western blot 进行的.
- 用RTqPCR量化基因表达.
主要成果:
- 与休息条件相比,所有运动ESS条件都增加了ENOS和SIRT1蛋白质表达.
- 在所有运动ESS条件下,NOS3和SIRT1基因表达减少.
- ET1蛋白没有表达,而EDN1基因表达在运动后增加ESS.
结论:
- 运动诱导的ESS增强了血管保护蛋白的表达 (eNOS,SIRT1).
- 在运动诱导ESS后,蛋白质和基因表达之间存在反向关系.
- 运动可能在催化mRNA到蛋白质方面发挥了以前未知的转化作用.
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