内皮Dab1信号调节中枢神经系统中的神经质血管通信
Marta Segarra1, Maria R Aburto1,2, Florian Cop1
1Institute of Cell Biology and Neuroscience and Buchmann Institute for Molecular Life Sciences, University of Frankfurt, D-60438 Frankfurt am Main, Germany.
Science (New York, N.Y.)
|August 25, 2018
概括
通过促进神经质血管通信,内皮细胞中的瑞林信号促进了血脑屏障的形成和神经元迁移. 这一途径对大脑的发育和功能至关重要.
科学领域:
- 神经科学
- 血管生物学
- 细胞生物学
背景情况:
- 神经血管单元 (NVU) 整合了神经细胞,质细胞和血管细胞.
- 在NVU内部的通信对大脑功能至关重要,包括神经元迁移和血脑屏障 (BBB) 完整性.
研究的目的:
- 研究神经指导线索里林在神经血管单元中的作用.
- 阐明内皮细胞中瑞林信号影响神经质血管通信的机制.
主要方法:
- 使用在内皮细胞中特定基因缺失的小鼠模型.
- 分析了血管化,神经元迁移和BBB特性.
- 研究的蛋白质表达和信号通路,包括reelin,ApoER2,Dab1,laminin-α4和integrin-β1.
主要成果:
- 瑞林表现出益血管性活动,增强内皮细胞与质细胞的交流.
- 在内皮细胞中的Apolipoprotein E受体2 (ApoER2) 和Disabled1 (Dab1) 对于视网膜和大脑皮层的血管化至关重要.
- 在内皮细胞中Dab1的删除会损害质蛋白α4分泌和整合蛋白β1激活,影响神经元迁移和NVU屏障特性.
结论:
- 在内皮内进行的瑞林信号是神经-质-血管通信的重要指导信号.
- 这一途径对于控制神经元迁移和建立血脑屏障至关重要.
- 里林在内皮细胞中的作用凸显了它在整合信号对正常大脑发育和功能的重要性.
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