肉GLUT4通过增强线粒体氧化酸化和抑制骨肌卫星细胞中的核糖体路径来起作用
Lin Zhang1, Pengna Luo1, Huihong Li1
1College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan 450046, China.
Poultry science
|November 8, 2024
概括
类葡萄糖转运体4 (GLUT4) 在肌肉细胞中被动态表达,并对胰岛素作出反应,促进细胞增殖和调节葡萄糖吸收. 这通过增强的线粒体氧化酸化和抑制的核糖体通路发生.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 动物科学动物科学
背景情况:
- 葡萄糖载体4 (GLUT4) 对于哺乳动物的葡萄糖吸收至关重要.
- 关于禽类GLUT4.4的信息有限.
- 了解的GLUT4对于家禽科学和代谢研究至关重要.
研究的目的:
- 研究肉GLUT4.4的表达特征.
- 检查GLUT4过度表达对肉初级骨肌卫星细胞 (CP-SMSCs) 的影响.
- 阐明GLUT4在中的功能背后的分子机制.
主要方法:
- 实时定量PCR (RT-qPCR) 用于基因表达分析.
- 在CP-SMSC中GLUT4过度表达.
- RNA测序 (RNA-seq) 用于识别差异表达基因 (DEG).
- 细胞计数套件-8 (CCK-8) 和5-乙烯基-2'-脱氧氨 (EDU) 测定用于增殖评估.
主要成果:
- 肉GLUT4主要表达在骨肌肉中,并在CP-SMSC增殖和分化过程中升级.
- 胰岛素显著增加了CP-SMSCs中的GLUT4表达.
- GLUT4过度表达促进了细胞增殖和增强了胰岛素刺激的葡萄糖吸收,但在高葡萄糖条件下抑制了葡萄糖消耗.
- RNA-seq揭示了302个DEG,富含氧化酸化和核糖体通路.
- 受影响的关键途径包括线粒体功能,ATP代谢和核糖体活动.
结论:
- 肉GLUT4表现出动态表达和胰岛素反应.
- 在中,GLUT4调节细胞葡萄糖的吸收和增殖.
- 机制包括对线粒体氧化酸化和核糖体通路的调节.
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