解读miRNA-mRNA相互作用网络调节老化骨肌肉在各种运动方案通过综合生物信息学分析
Zhi Yu1, Pin-Shi Ni1, Zhuang-Zhi Wang1
1Nanjing Normal University, Nanjing, Jiangsu, China.
Cell biochemistry and biophysics
|August 1, 2025
概括
抵抗运动和耐力运动通过调节特定的microRNAs (miRNAs) 来独特地对抗老年人肌肉缩. 这两种运动类型都汇聚在关键路径上,为个性化的肉症预防策略提供了基础.
科学领域:
- 分子生物学分子生物学
- 运动生理学 运动生理学
- 老年学是一门学科.
背景情况:
- 骨肌肉缩或缩症是老年人群的一个重大问题,影响移动性和健康.
- 了解不同运动方式如何抵消肌肉损失的分子基础对于有效的干预至关重要.
- 微RNAs (miRNAs) 是基因表达的关键调节者,与肌肉健康和疾病有关.
研究的目的:
- 调查不同的和重叠的分子机制,特别是miRNA表达特征,通过抵抗运动 (RES) 和耐力运动 (END) 减轻老年人骨肌肉缩.
- 为了识别运动特定的miRNA信号及其相关的调节途径,参与打击与年龄相关的肌肉损失.
主要方法:
- 使用基因表达综合 (GEO) 数据库和GEO2R.使用老化骨肌肉数据集 (GSE165632) 的微RNA (miRNA) 表达特征分析.
- 用miRTarBase,micro-T和TargetScan.can等数据库识别差异表达的miRNA (DEmiRNA) 并预测它们的基因.
- 使用DAVID,ChEA3和STRING数据库进行了功能丰富分析 (基因本体学,KEGG途径) 和网络分析 (转录因子,蛋白质与蛋白质相互作用).
主要成果:
- 抵抗运动 (RES) 揭示了30种差异表达的miRNAs,它们调节了像FoxO信号传递,胰岛素抵抗和AMPK这样的途径,促进了蛋白质合成和减少了亡.
- 耐力运动 (END) 确定了21种与FoxO,TGF-β,MAPK和cGMP-PKG信号传递相关的有差异表达的miRNA,增强了线粒体功能和代谢调节.
- RES和END都聚集在共同的通路上 (MAPK,TGF-β,PI3K-Akt),涉及SMAD4和TRAF6等基因,这对肌细胞存活和纤维化抑制至关重要.
结论:
- 阻力运动主要增强蛋白质合成并抑制细胞亡,而耐力运动通过不同的miRNA驱动的途径促进线粒体功能和能量代谢.
- 这两种运动类型都有共同的融合分子通路,这对于保持骨肌肉健康至关重要.
- 这些发现为开发个性化炼计划提供了分子基础,以有效地抵消老年人肉类的疾病.
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