一种新型的BMSC衍生出异位体循环细胞通过准miR-34a-5p来调节Piezo1来促进血管生成
Tingyu Wu1,2, Yinxue Zhou2,3, Yaping Jiang4
1Department of Joint Surgery, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266003, China.
Stem cell research & therapy
|November 26, 2025
概括
骨髓介质干细胞 (BMSC) 衍生的外体携带 novel_circ_0001686,通过调节 miR-34a-5p/Piezo1 轴,促进血管生成. 这一发现突出了外体环RNAs作为类固醇诱导的股骨头骨硬化 (SONFH) 的潜在治疗方法.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 再生医学是一种再生医学.
背景情况:
- 类固醇诱导的股骨头骨 necrosis (SONFH) 损害了血管生成和骨重塑,导致关节功能障碍.
- 骨髓介质干细胞 (BMSC) 衍生的外体含有循环RNAs (circRNAs),对血管生成和组织修复至关重要.
研究的目的:
- 研究一种新型BMSC衍生的外体环RNA (novel_circ_0001686) 在促进血管生成中的作用.
- 阐明涉及miR-34a-5p/Piezo1轴的竞争性内源RNA (ceRNA) 机制.
主要方法:
- 高通量测序以识别SONFH患者衍生的外体细胞中的circRNAs.
- 定量实时PCR (qRT-PCR),桑格测序和RNase R处理以表征新型_circ_0001686.
- 在体外 (HUVECs,大动脉环测定) 和体内 (CAM测定) 模型来评估血管新生效应.
- 双露西法酶记者测定,RNA免疫沉 (RIP) 和RNA反意义净化 (RAP) 来证实ceRNA机制.
主要成果:
- 测序确定了113种新的circRNA,其中 novel_circ_0001686在SONFH外体中显著下调.
- novel_circ_0001686 增强了内皮细胞的增殖,迁移和血管生成.
- novel_circ_0001686作为一个ceRNA的功能,海绵 miR-34a-5p 调节Piezo1的表达.
- 外体 novel_circ_0001686 在体外和体内促进了微血管发芽.
结论:
- novel_circ_0001686是通过 novel_circ_0001686/miR-34a-5p/Piezo1轴在 SONFH 中血管新生的一个关键调节器.
- 外体 novel_circ_0001686 增强内皮功能和血管重塑.
- novel_circ_0001686代表了SONFH的一个有前途的治疗标,具有基于外体细胞的再生策略的潜力.
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