miR-100-5p通过Trib2/mTOR/S6K信号通路调节骨肌肉肌体发生
Kaiming Wang1, Sui Liufu1, Zonggang Yu1
1College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China.
International journal of molecular sciences
|May 27, 2023
概括
微RNA-100-5p通过向Trib2和禁用mTOR/S6K通路来促进骨肌肉细胞的增殖,并抑制分化. 这一发现揭示了肌肉发生的新型调节机制.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 生物化学 生化学
背景情况:
- 微RNAs (miRNAs) 是生物过程的关键调节者,包括骨肌肉发育.
- miRNA-100-5p与瘤细胞的增殖和迁移有关.
- 微RNA-100-5p在肌肉发育中的特定作用需要进一步阐明.
研究的目的:
- 为了研究miRNA-100-5p在骨肌肉肌形成中的调节机制.
- 为了识别参与miRNA-100-5p介导肌体发生的目标基因和信号通路.
主要方法:
- 生物信息分析用于预测miRNA目标.
- 双路西法酶测定,qRT-PCR和西班牙涂抹,以验证基因相互作用.
- 细胞增殖和分化测试使用C2C12细胞核细胞.
- 信号通路分析 (mTOR/S6K) 进行.
主要成果:
- 在猪肌肉组织中,miRNA-100-5p的表达率很高.
- 微RNA-100-5p的过度表达促进了C2C12神经细胞的增殖,并抑制了分化.
- 确定Trib2是miRNA-100-5p的直接标基因.
- 在Trib2中,Knockdown模仿了miRNA-100-5p抑制对肌肉生成的影响.
- miRNA-100-5p通过不激活mTOR/S6K信号通路来抑制肌体发生.
结论:
- miRNA-100-5p在调节骨肌肉肌质生成方面发挥着重要作用.
- 调控轴涉及miRNA-100-5p针对Trib2,这会影响mTOR/S6K信号通路.
- 这项研究阐明了一种新的分子机制,它控制了骨肌肉的发育.
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