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具有高Piezo2表达的mpECs通过通过Notch信号通路驱动血管新生来促进骨折愈合

Lingfeng He¹, Fanyong Gong², Jiangyong Wang²

¹Department of Hand Surgery, Department of Plastic Reconstructive Surgery, Ningbo No. 6 Hospital, Ningbo, China.

BMC musculoskeletal disorders

|March 12, 2025

概括

一种蛋白质Piezo2通过促进血管形成 (血管生成) 对骨折愈合至关重要. 它的减少表达阻碍了愈合,但激活Notch通路可以恢复这一过程,加速骨修复.

科学领域:

生物医学工程生物医学工程
细胞生物学细胞生物学
再生医学是一种再生医学.

背景情况:

骨折愈合是一个复杂的过程,通常会因血管生成中断而受损.
识别血管生成的分子调节者是改善骨折结合的关键.
内皮细胞 (EC) 子集在骨折修复中起着至关重要的作用.

研究的目的:

用单细胞RNA测序研究内皮细胞子集在骨折愈合中的作用.
阐明Piezo2在内皮细胞中的功能及其对血管生成及其Notch信号通路的影响.
探索针对Piezo2和Notch信号的治疗策略,以加强骨折愈合.

主要方法:

单细胞RNA测序 (scRNA-seq) 用于在骨折部位分析内皮细胞子集.
在人静脉内皮细胞 (HUVECs) 中使用shRNA进行Piezo2表达的体外淘汰.
在HUVECs中使用Notch通路抑制剂 (DAPT) 和激动剂 (Jagged1) 的干预.
包括CCK-8和流细胞计在内的检测,以评估细胞增殖,细胞循环和管形成.

主要成果:

sc-RNA seq确定了通过Notch信号,血管生成和细胞周期调节影响骨折修复的特定EC子集 (mpECs).
在HUVEC中Piezo2敲击抑制了增殖,细胞循环和Notch通路激活,抑制了血管生成.
Jagged1逆转了Piezo2的淘汰效应,促进了HUVEC的增殖,细胞循环的进入,并增强了管的形成和长度.

结论:

Piezo2通过Notch信号通路调节内皮细胞表型.
准Piezo2和Notch信号具有通过促进血管生成来加速骨折愈合的潜力.

关键词:

血管新生的产生.内皮细胞子集内皮细胞子集骨折的愈合骨折的愈合缺口信号通道的信号通道.这是一个Piezo22.

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