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经N6-甲基亚诺辛修饰的CircPSMA7通过miR-128-3p/MAPK1轴增强膀癌恶性
Jiahe Yi1, Xueyou Ma1, Yufan Ying1
1Department of Urology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Cancer Center, Zhejiang University, Hangzhou, 310058 China.
Cancer letters
|January 11, 2024
概括
这项研究确定circPSMA7是膀癌 (BCa) 进展的关键驱动因素. 这种新型的循环RNA通过与miR-128-3p相互作用,促进瘤生长和转移,为BCa.提供潜在的诊断生物标志物和治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 循环RNAs (circRNAs) 与各种疾病有关,包括膀癌 (BCa).
- 通过circRNAs促进BCa恶性瘤的特定机制尚未完全理解.
- 识别新型circRNA及其作用对于理解BCa进展至关重要.
研究的目的:
- 在膀癌中识别和表征一种新型circRNA,circPSMA7.
- 阐明circPSMA7在BCa扩散和转移中的作用的分子机制.
- 研究circPSMA7作为BCa的诊断生物标志物和治疗点的潜力.
主要方法:
- 使用circRNA测序 (circRNA-seq) 和定量实时PCR (qRT-PCR) 来识别和量化circPSMA7的表达.
- 进行了体外和体内实验,以评估circPSMA7在BCa细胞中的功能作用.
- 进行了RNA免疫沉降 (RIP) 测定和分子相互作用研究,以探索涉及circPSMA7,M6A修饰,IGF2BP3和miR-128-3p的调节网络.
主要成果:
- 在BCa细胞系和组织中,circPSMA7的表达显著增加,与较高的瘤等级和阶段相关.
- 通过M6A修饰通过IGF2BP3稳定circPSMA7,通过调节细胞周期和上皮层-介质酶转化 (EMT) 过程促进BCa细胞的增殖和转移.
- circPSMA7作为miR-128-3p的分子海绵,导致MAPK1的表达增加并促进BCa的进展. 当miR-128-3p被抑制时,沉默circPSMA7部分逆转了这些影响.
结论:
- METTL3/IGF2BP3/circPSMA7/miR-128-3p/MAPK1轴是膀癌进展的一个关键调节器.
- circPSMA7在促进BCa扩散和转移方面发挥着重要作用.
- circPSMA7是一个有前途的诊断生物标志物,也是膀癌患者潜在的治疗点.
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