Shh-Gli2-Runx2 抑制了血管化的发生
Aoran Huang1, Tianhua Xu1, Xiaomei Lu2
1Department of Nephrology, The First Hospital of China Medical University, Shenyang, China.
概括
发现SHH信号传递,骨形成的关键途径,在血管化 (VC) 中降低. 恢复Shh水平抑制了VC,这表明Shh是这种情况的潜在治疗标.
科学领域:
- 心血管生物学 心血管生物学
- 腎臟醫學 腎臟醫學
- 分子生物学分子生物学
背景情况:
- 血管化 (VC) 是慢性病 (CKD) 的常见并发症,显著增加死亡风险.
- 刺 (Hh) 信号传递中的配体Shh参与骨质生成和心血管疾病,但其在VC中的作用仍然未被探索.
研究的目的:
- 研究Shh信号在慢性病 (CKD) 中血管化 (VC) 的发展中的作用.
- 探索Shh作为治疗VC的潜在治疗目标.
主要方法:
- 使用无机诱导血管光滑肌细胞 (VSMCs) 进行化.
- 血管化 (VC) 在小鼠中被诱导,使用补充的腺素饮食.
- 使用激动剂 (SAG) 和抗剂 (CPN),以及Shh和Gli2.2的基因操纵 (过度表达/沉默) 实现了Shh信号通路调制.
主要成果:
- 在化VSMC,有VC的小鼠动脉和有VC的CKD患者的放射性动脉中,SHH水平降低了.
- Shh过度表达抑制了VSMC化,而Shh沉默则加速了它.
- 刺信号激动剂 (SAG) 缓解了VC,而抗剂 (CPN) 则使其恶化.
- Shh通过Gli2抑制了VC,这促进了Runx2的降解,独立于Smurf1和Cullin4B.
结论:
- SHH信号对血管化 (VC) 起着保护作用.
- 这项研究阐明了Shh在通过Gli2介导的Runx2降解来防止VC的机制.
- Shh 已成为一种有前途的治疗点,用于治疗CKD中的血管化.
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