Circ_RUSC2 隔离miR-661并提高TUSC2的表达,以抑制结肠直肠癌的进展
Yixin Shi1, Dingru Li2, Yunchao Xu3
1Liaoning Laboratory of Cancer Genomics, Department of Cell Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
International journal of molecular sciences
|April 17, 2025
概括
循环RNA RUSC2 (circ_RUSC2) 通过对miR-661进行海绵作用,抑制TUSC2的下调,从而抑制结直肠癌 (CRC) 的进展. 减少circ_RUSC2表达与晚期CRC相关,表明其作为治疗点的潜力.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 在RNA生物学,RNA生物学.
背景情况:
- 结肠直肠癌 (CRC) 仍然是癌症死亡的重要原因,发病率不断增加.
- 循环RNAs (circRNAs) 正在成为癌症的关键调节者,包括CRC.
- 在CRC病变发生过程中circ_RUSC2的特定作用需要阐明.
研究的目的:
- 研究结直肠癌中circ_RUSC2的功能和分子机制.
- 为了确定CRC中circ_RUSC2,miR-661和TUSC2之间的关系.
主要方法:
- 定量实时PCR (qRT-PCR) 和西方涂抹用于表达式分析.
- 细胞测试 (CCK-8,Transwell,伤愈合) 用于扩散,迁移和入侵.
- RNA下拉和actinomycin D测试以阐明RNA相互作用和稳定性.
主要成果:
- 在CRC组织和细胞中,circ_RUSC2的下调,而miR-661的上调.
- circ_RUSC2抑制了CRC细胞的增殖,迁移和入侵,作为miR-661.1.的海绵.
- miR-661针对TUSC2,促进CRC细胞恶性病变;circ_RUSC2逆转了这一效应.
- METTL3的敲除降低了circ_RUSC2的稳定性,这表明m6A的甲基化参与.
结论:
- circ_RUSC2通过miR-661/TUSC2轴抑制了CRC的进展.
- 循环RUSC2的下调与CRC的发病和进展有关.
- circ_RUSC2显示出作为CRC的新生物标志物和治疗点的潜力.
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