带有局部协调的纤毛运动的纤毛细胞域在大脑侧腔室中产生微流的马赛克
Kennelia Mellanson1,2, Lei Zhou3,4, Tatiana Michurina1,5
1Center for Developmental Genetics, Stony Brook University, Stony Brook, NY 11794.
bioRxiv : the preprint server for biology
|March 3, 2025
概括
大脑脊髓液 (CSF) 的循环依赖于多细胞. 这项研究揭示了细胞极性组织如何创造复杂的微流,增强CSF在整个大脑心室的分布.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 流体动力学 流体动力学
背景情况:
- 大脑脊髓液 (CSF) 的循环对于大脑的恒温和神经发生是至关重要的.
- 多细胞及其结构极化驱动大脑心室内的CSF流动.
- 细胞极性的精确组织在广泛的纤毛表皮上以及它对CSF流动力学的影响仍然不完全理解.
研究的目的:
- 为了研究纤毛上皮的组织极性组织如何决定CSF流动轨迹和分布.
- 分析横腔室壁的广泛区域中转化极性的空间布局.
- 为了检查的运动,流动模式和心跳频率 (CBF) 在活脑室准备.
主要方法:
- 先进的成像技术分析横向心室壁的大面积的翻译极性.
- 实时成像观察乳毛运动,中枢神经液流动轨迹和CBF.
- 研究了nNOS在调节极性,微流和CBF中的作用.
主要成果:
- 确定了主要的后向前 (P-A) CSF流和众多局部微流,其复杂的轨迹与主流偏离.
- 观察到的纤毛细胞转化极性对齐的变化:与主流在背面对齐,并在外围组织成不同的集群.
- 证明了多结合的体细胞的集群组织产生流动的马赛克,微流促进广泛的CSF分布.
结论:
- 表面细胞极性的空间组织,特别是集群形成,对于产生复杂的CSF微流至关重要.
- 这些微流促进了CSF在腹腔内膜上有效和广泛的分布.
- nNOS在控制表皮细胞转化极性,集群组织,微流生成和CBF方面发挥着重要作用.
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