直接circMAN1A2 ((2,3,4,5) -CENPB mRNA相互作用调节细胞增殖和癌症进展
Mei Cao1, Guo-Hua Yuan2, Shi-Meng Cao3
1Center for Molecular Medicine, Children's Hospital of Fudan University and Shanghai Key Laboratory of Medical Epigenetics, International Laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
Nature communications
|September 29, 2025
概括
替代循环化 (AC) 从单个基因产生多个circRNA. 一个特定的AC circRNA,circMAN1A2 ((2,3,4,5),通过稳定CENPB mRNA,促进结直肠癌 (CRC) 的进展,提供了一个潜在的治疗点.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 癌症研究 癌症研究
背景情况:
- 卷积封闭的圆形RNAs (circRNAs) 是由前子反向拼接产生的.
- 替代循环化 (AC) 从单个基因位点产生多个circRNA.
- 大多数AC环RNA的功能在很大程度上是未知的.
研究的目的:
- 研究各种细胞系和结直肠癌 (CRC) 组织中的AC circRNAs的风景.
- 在AC基因位点内识别主要表达的circRNAs (pe-circRNAs).
- 为了阐明在CRC中特定的AC circRNA,circMAN1A2 ((2,3,4,5) 的功能和机制.
主要方法:
- 在多个细胞系和CRC组织中对AC circRNA表达的剖析.
- 在AC基因位点中识别pe-circRNAs.
- 涉及RNA-RNA相互作用,mRNA稳定性测定和锁定核酸抑制的机制研究.
主要成果:
- 在AC基因位点中识别了pe-circRNAs,在大多数情况下主要以细胞类型为特征表达.
- 发现circMAN1A2 ((2,3,4,5) 是一种普遍表达的pe-circRNA,在细胞增殖和CRC进展中起着重要作用.
- 证明circMAN1A2 ((2,3,4,5) 通过与其3' UTR的相互作用来增强CENPBmRNA的稳定性,这种稳定性由IGF2BP2介导.
- 表明抑制circMAN1A2(2,3,4,5) 抑制了CRC的进展.
结论:
- AC circRNAs是普遍存在和多样化的.
- circMAN1A2 ((2,3,4,5) 是细胞增殖和CRC进展的关键调节者.
- 向circMAN1A2 ((2,3,4,5) 是对结直肠癌的潜在治疗策略.
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