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内皮PDGF-D通过挽救细胞周围细胞功能,有助于在缺血性中风后的神经血管保护
Maxime Bernard1,2, Romain Menet1,2, Sarah Lecordier1,2
1Department of Psychiatry and Neuroscience, Faculty of Medicine, Université Laval, Quebec City, QC, Canada.
Cellular and molecular life sciences : CMLS
|May 20, 2024
概括
血小板衍生生长因子D (PDGF-D) 在缺血性中风后保护大脑细胞. 增加PDGF-D水平可以改善神经恢复,并通过支持细胞周围细胞功能来促进稳定的血管修复.
科学领域:
- 神经科学是一个神经科学.
- 血管生物学 血管生物学
- 再生医学是一种再生医学.
背景情况:
- 缺血性中风触发了新血管化,用于组织修复和恢复.
- 细胞是血管生成的关键调节者,对中风引起的压力做出反应.
- 血小板衍生生长因子 (PDGF) 受体β (PDGFRβ) 信号影响细胞周围细胞的行为,但PDGF-D在中风中的作用尚不清楚.
研究的目的:
- 在缺血性中风的背景下研究PDGF-D的调节和功能.
- 确定在中风后调节PDGF-D水平的治疗潜力.
主要方法:
- 实验性缺血性中风小鼠模型.
- 使用siRNA和重组蛋白对PDGF-D表达的操纵.
- 评估神经元存活率,微血管密度,血管透性和神经功能.
- 在类似于缺血的条件下使用人脑细胞和内皮细胞进行体外研究.
主要成果:
- 在中风后,PDGF-D在脑内皮细胞中短暂诱导.
- 下调PDGF-D恶化了中风的结果 (神经元损失,血管系统受损).
- 增加PDGF-D可以改善神经元的存活率,神经恢复,并促进稳定的新血管化.
- PDGF-D增强了皮质细胞与内皮细胞的关联,并改善了它们的功能.
结论:
- 在缺血性中风后的亚急性阶段,PDGF-D起着保护作用.
- 调节PDGF-D生物可用性为神经血管保护提供了一个潜在的治疗策略.
- PDGF-D拯救了细胞周细胞的功能,促进了血管生成和恢复.
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