1型糖尿病重塑了前膜周血管-免疫接口区域
Eriko Furube1, Yusuke Tanaka1, Shigetaka Yoshida1
1Department of Functional Anatomy and Neuroscience, Asahikawa Medical University, Asahikawa, Hokkaido, Japan.
概括
周心器官 (CVOs) 在周心器空间 (PVS) 中具有独特的免疫细胞. 在糖尿病发病一周之内,这些免疫细胞和PVS结构在前膜区域 (AP) 迅速发生变化.
科学领域:
- 神经免疫学 神经免疫学
- 血管生物学 血管生物学
- 大脑屏障研究研究
背景情况:
- 周心器官 (CVOs) 像区域前膜 (AP) 缺乏典型的血脑屏障 (BBB).
- 在CVO中扩大的周周血管空间 (PVS) 与神经免疫通信有关.
- 在代谢压力下,CVO PVS内的免疫细胞的动态行为尚未得到充分理解.
研究的目的:
- 调查CVO PVS.内的免疫细胞的精确定位和动态.
- 确定系统代谢应激,特别是1型糖尿病如何改变AP中的免疫细胞分布和PVS结构.
- 为了比较AP的变化与BBB无损区域的变化,单独的核 (Sol).
主要方法:
- 使用3D多重体免疫光和免疫电子显微镜.
- 映射Iba1阳性免疫细胞相对于底层膜 (胺素) 和血管 (CD31).
- 采用P2RY12染色来区分帕伦基马微质细胞与PVS相关的细胞. 诱导的1型糖尿病使用链毒素.
主要成果:
- 在基线时,AP PVS含有大量P2RY12阴性,Iba1阳性细胞,超过其他大脑区域.
- 在诱导糖尿病7天后,AP显示PVS面积减少,结构复杂性增加,Iba1阳性细胞数量增加.
- 在相同条件下,在BBB-完好无损的单独核 (Sol) 中没有观察到显著的变化.
结论:
- CVO PVS代表了一个独特的免疫,由P2RY12阴性,Iba1阳性细胞组成.
- 在一周内,AP的血管和免疫部门经历了快速的重塑.
- AP作为外周至大脑信号的早期响应中心,表明早期糖尿病生物标志物和治疗开发的潜力.
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