在中风模型中,VEGF-C预防有利于淋巴排水,并调节神经炎症
Ligia Simoes Braga Boisserand1, Luiz Henrique Geraldo2, Jean Bouchart1
1Department of Neurology, Yale University School of Medicine, New Haven, CT, USA.
The Journal of experimental medicine
|March 5, 2024
概括
过度表达血管内皮生长因子-C (VEGF-C) 通过促进淋巴生长和神经保护通路,增强了脑液排水,并通过促进淋巴生长和神经保护通路,保护小鼠免受缺血性中风.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 脑膜淋巴血管 (MLVs) 对于中枢神经系统 (CNS) 的废物清除和免疫细胞贩运至关重要.
- 血管内皮生长因子-C (VEGF-C) 在淋巴血管的发育和功能中起着关键作用,包括MLVs.
- 由于其在淋巴细胞调节中的作用,VEGF-C对神经系统疾病具有治疗前景.
研究的目的:
- 在小鼠模型中研究VEGF-C过度表达对脑脊液 (CSF) 排水和缺血性中风后的结果的影响.
- 阐明潜在的机制,包括由VEGF-C.介导的淋巴增强和神经保护信号传递.
主要方法:
- 腺相关病毒表达小鼠全长VEGF-C (AAV-mVEGF-C) 在小鼠体内进行脑脊髓内注射.
- 评估了大脑脊髓液 (CSF) 到深淋巴结 (dCLNs) 的排水情况.
- 单核RNA测序用于分析脑细胞中的基因表达变化.
- 诱导了缺血性中风,并评估了中风损伤,运动性能,神经炎症和信号通路.
- 通过烧化测试dCLN淋巴细胞的作用,并调查了VEGF-C的时间.
主要成果:
- 通过促进MLV生长和增强dCLN的淋巴连接,AAV-mVEGF-C的使用增加了CSF排水.
- 过度表达VEGF-C可以调节大脑细胞中的神经保护信号通路.
- 使用AAV-mVEGF-C的预治疗显著减少了缺血性中风损伤,并在亚急性阶段改善了运动功能.
- 这些保护作用与微质介导炎症的减少和大脑衍生神经营养因子 (BDNF) 信号的增强有关.
- VEGF-C的神经保护性益处取决于功能性的dCLN淋巴细胞,并且没有观察到急性中风后给药.
结论:
- 预防性给予VEGF-C可增强MLV功能,改善脑液清除,并提供对缺血性中风的保护.
- VEGF-C通过血管,免疫和神经机制的结合来发挥其神经保护作用,突出显示了它对中风的治疗潜力.
- 这些发现强调了向脑膜淋巴管和VEGF-C信号传递对于在急性缺血性中风中管理神经损伤的重要性.
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