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关于CARM1在骨肌肉适应运动的性别特异性影响
Tiffany L Vanlieshout1, Derek W Stouth, Rozhin Raziee
1Department of Kinesiology, McMaster University, Hamilton, Ontario, CANADA.
Medicine and science in sports and exercise
|October 26, 2023
概括
同活性剂相关的阿金氨基甲基转移酶1 (CARM1) 影响雌性小鼠的运动表现和线粒体适应. 消除CARM1可减少跑步量,并改变线粒体的可塑性,突出其在性别特异性运动反应中的作用.
科学领域:
- 运动生理学 运动生理学
- 骨肌肉生物学 骨肌肉生物学
- 分子生物学分子生物学
背景情况:
- 身体活动诱导了显著的骨肌肉适应.
- 生物性影响运动反应和线粒体功能.
- 氨酸甲基化是细胞过程中关键的翻译后修饰.
研究的目的:
- 调查协活性剂相关的阿尔金因甲基转移酶1 (CARM1) 在特定性别的骨肌肉适应运动中的作用.
- 确定CARM1缺乏如何影响雌性和雄性小鼠的运动表现和线粒体可塑性.
主要方法:
- 使用一个小鼠模型与CARM1骨肌特异性淘汰 (mKO) 和野生型 (WT) littermates.
- 在8周内评估了久坐 (SED) 和自愿轮行 (VWR) 组.
- 采用功能测试,西式涂抹,酶测定和电子显微镜进行分子和形态分析.
主要成果:
- 在雌性小鼠中,肌肉特异性CARM1淘汰减少了自愿运行体积.
- 运动诱导的生理适应在不同组中是相似的,不管跑步产量如何.
- 卡姆1淘汰改变了线粒体大小和分数面积,以应对运动,特别是在雌性小鼠.
- 随着运动,CARM1和PRMT7蛋白质水平发生了变化,而其他PRMT标志物没有受到影响.
结论:
- 对于运动表现的性别差异来说,CARM1是至关重要的.
- 在运动期间,CARM1在调节骨肌肉线粒体可塑性方面发挥着至关重要的作用.
- 向CARM1可能会以性别特定的方式影响运动能力和线粒体健康.
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