循环RNA DENND4C通过miR-26a-5p/HSPA8轴调节乳腺癌中的细胞恶性行为
MeiYan Guo1, Yan Chang1, YuNa Dai1
1Department of Breast Surgery, Affiliated Hospital of Hebei Engineering University, Handan City, Hebei Province, 056002, People's Republic of China.
Breast cancer (Dove Medical Press)
|December 8, 2025
概括
循环RNA DENND4C (circDENND4C) 通过海绵化miR-26a-5p来促进乳腺癌 (BC) 的进展,以调高人类71kDa热冲击相关蛋白 (HSPA8). 这项研究揭示了BC发育中的新机制.
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:
- 大多数循环RNAs (circRNAs) 在乳腺癌 (BC) 中的作用在很大程度上是未知的.
- 了解circRNA功能对于开发新的BC诊断和治疗方法至关重要.
研究的目的:
- 研究 circDENND4C 在乳腺癌 (BC) 的生物功能.
- 为了阐明circDENND4C在BC进展中的下游分子机制.
主要方法:
- 使用定量实时PCR (RT-qPCR) 和西部斑分析来评估BC组织中的circDENND4C,miR-26a-5p和HSPA8表达.
- 细胞增殖,细胞循环,入侵和迁移试验在转染后进行.
- 生物信息学,RNA免疫沉降 (RIP) 和双露西法酶记者测试验证了分子相互作用.
主要成果:
- circDENND4C在BC组织上升调节,与预后不佳相关.
- 在BC中,HSPA8表达升高,而miR-26a-5p在BC中下调.
- 沉默circDENND4C抑制了BC细胞的增殖,入侵和迁移,并诱导了G0/G1细胞周期停止. 过度表达产生了相反的效果.
- circDENND4C通过海绵化miR-26a-5p促进了HSPA8的表达.
结论:
- circDENND4C 作为 miR-26a-5p 的分子海绵,导致 HSPA8.8 的上调.
- 这个circDENND4C/miR-26a-5p/HSPA8轴促进乳腺癌的进展.
- 这些发现为BC机制和潜在的治疗点提供了新的见解.
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