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双素缺乏对血管光滑肌肉细胞的影响

Wanling Xuan¹, Feng Cheng², Xiaowei Han²

¹Department of Pharmaceutical Sciences, USF Health Taneja College of Pharmacy, University of South Florida, Tampa, FL, 33612, USA. wxuan@usf.edu.

Scientific reports

|November 25, 2025

概括

杜氏肌肉发育不良 (DMD) 导致血管光滑肌细胞 (VSMC) 功能障碍和异常. 双素缺乏会损害VSMC的可塑性和线粒体的健康,导致DMD的血管病理.

科学领域:

生物医学研究生物医学研究
遗传学是一个遗传学.
心血管生物学心血管生物学

背景情况:

杜琴肌肉衰竭 (DMD) 主要影响骨和心脏肌肉.
血管光滑肌细胞 (VSMC) 在DMD病变发生过程中的作用在很大程度上是未被探索的.
消极蛋白对肌肉完整性至关重要,它的缺失会影响各种细胞类型.

研究的目的:

为了研究双素缺乏对VSMC可塑性和功能的影响.
确定DMD中VSMC异常背后的分子机制.
探索血管系统中潜在的治疗点.

主要方法:

使用了mdx小鼠模型和患者衍生的诱导多能干细胞 (iPSC) VSMCs.
采用了免疫组织化学,西部斑,电子显微镜和转录基因分析.
评估了VSMC成熟,线粒体动态,细胞亡和基因表达特征.

主要成果:

在mdx小鼠中观察到异常的血管结构和退化.
DMD VSMCs表现出成熟受损,收缩性蛋白质减少,以及功能障碍的线粒体 (过度裂变).
转录基因分析揭示了VSMC增殖,分化和血管发育中的失调基因,其中涉及关键的转录因子. 在压力下,亡通路的调节升高.

结论:

双素缺乏会显著改变VSMC的可塑性和线粒体动力学.
血管功能障碍和血管病理是DMD进展的关键因素.
针对血管异常,为DMD提供了一个有前途的治疗策略.

关键词:

杜申尼肌肉发育不良症是什么迪斯特罗芬 (Dystrophin) 是一种消极蛋白质.诱导的多能干细胞干细胞氧化应激是一种氧化应激.血管光滑肌细胞是血管光滑肌细胞.

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