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科尔奇辛通过维持血管光滑肌细胞恒常性来阻止腹腔大动脉动脉瘤的发展
Min Chen1, Dafeng Yang2, Yangzhao Zhou2
1Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Southern Medical University, Guangzhou, China.
International journal of biological sciences
|April 15, 2024
概括
低剂量胆固醇通过稳定mRNA和调节血管光滑肌细胞 (SMC) 稳定性来防止腹腔大动脉动脉瘤 (AAA) 的生长. 这一发现为AAA患者提供了潜在的非手术治疗方法.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 血管生物学 血管生物学
背景情况:
- 腹腔大动脉瘤 (AAA) 的发展缺乏有效的非手术治疗方法.
- 科尔奇辛在心血管疾病中表现有前途,但其在AAA进展中的作用仍在争论中.
研究的目的:
- 调查低剂量胆固醇在预防AAA形成和进展方面的有效性.
- 阐明菌素对血管光滑肌细胞 (SMCs) 作用的潜在分子机制.
主要方法:
- 通过近大动脉CaPO4损伤和血管素II输液诱导的AAA的实验小鼠模型.
- 评估了胆固醇对SMC表型切换,亡和血管炎症的影响.
- 研究了METTL14/YTHDC1介导的m6A修饰,硬质素 (SOST) 表达和WNT/β-catenin信号传递的作用.
主要成果:
- 在小鼠模型中,素的使用阻断了AAA的形成,并防止了SMC异常和血管炎症.
- 科尔奇辛通过抑制METTL14/YTHDC1-介导的m6A修饰来增强全球mRNA稳定性,从而增加SOST表达.
- 这导致SMC中WNT/β-catenin通路的失活,维持了血管SMC的恒常性.
结论:
- 科尔奇辛通过调节METTL14/SOST/WNT/β-catenin轴来减缓AAA的发展,控制SMC的稳态.
- 研究结果表明,对患有腹腔大动脉动脉瘤的患者来说,素可能是有益的非手术治疗选择.
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