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Mol Cell:研究发现circ-ZNF609可特异性控制成肌细胞增殖

2017-09-19 MedSci MedSci原创

环状RNAs(circRNAs)是一种具有独特结构的转录物家族,但是其功能尚知之甚少。它们通过反向剪接反应进行生物合成,具有相当好的特征,而它们在生理相关过程调节中的作用尚不清楚。研究人员在小鼠和人类成肌细胞的体外分化过程中进行了circRNAs的表达谱分析,结果发现了调节肌生成并在Duchenne肌营养不良症中发生改变的保守物种。高含量功能基因组筛选研究其在肌肉分化中的功能作用。其中circ-Z

环状RNAs(circRNAs)是一种具有独特结构的转录物家族,但是其功能尚知之甚少。它们通过反向剪接反应进行生物合成,具有相当好的特征,而它们在生理相关过程调节中的作用尚不清楚。

研究人员在小鼠和人类成肌细胞的体外分化过程中进行了circRNAs的表达谱分析,结果发现了调节肌生成并在Duchenne肌营养不良症中发生改变的保守物种。高含量功能基因组筛选研究其在肌肉分化中的功能作用。其中circ-ZNF609可特异性控制成肌细胞增殖。Circ-ZNF609包含从起始密码子开始的开放阅读框架,与线性转录物相同,并终止在循环中生成的框内终止密码子。

总之,该研究发现Circ-ZNF609与重多聚核糖体相关,并以剪接依赖和帽独立的方式转录成蛋白质,为真核生物中蛋白质编码circRNA提供了实例。

原始出处:

Ivano Legnini, Gaia Di Timoteo, et al., Circ-ZNF609 Is a Circular RNA that Can Be Translated and Functions in Myogenesis. Mol Cell. 2017 Apr 6; 66(1): 22–37.e9. doi: 10.1016/j.molcel.2017.02.017.

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