视网膜神经血管单元(NVU)是由视网膜神经元、胶质细胞(大胶质细胞和小胶质细胞)以及血管系统构成的一个相互依赖的整体,在糖尿病视网膜病变等眼部疾病中起到关键作用。细胞通讯是视网膜NVU中各个细胞间联系的重要方式,包括以膜表面分子交互为主的直接型通讯作用以及细胞间分泌的可溶性因子为通讯介质的间接型通讯作用。小胶质细胞作为视网膜常驻免疫细胞,通过细胞间通讯作用精细协调神经组织与血管组织间活动,维持视网膜生理与病理功能。本篇综述探讨了视网膜小胶质细胞对神经节细胞的双重作用、与Müller细胞的炎症级联作用、对血管生成及毛细血管舒缩的调节作用、与周细胞共同参与血-视网膜内屏障的维持作用,并探究小胶质细胞在NVU的潜在作用。
The retinal neurovascular unit (NVU) is an interdependent system comprising neurons, glial cells (macroglia and microglia), and the vascular structure, entrusted with the preservation of retinal homeostasis.It plays a key role in eye diseases such as diabetic retinopathy.Cell communication forms a pivotal conduit for interaction within the NVU, encompassing both direct communication predominantly through gap junctions and cell surface receptors, as well as indirect communication via secreted intercellular soluble factors.As resident immune cells in the retina, microglia orchestrate activities between neural and vascular tissues through intercellular communication to maintain physiological and pathological functions of the retina.This review explores the multiple impact of retinal microglia on retinal ganglion cells, the inflammatory positive feedback loop involving retinal microglia and Müller cells, the modulation of angiogenesis, capillary constriction/dilation, and the role of microglia in maintaining the blood-retinal barrier within the retina in concert with pericytes.The potential influence of microglia within the neurovascular unit is also investigated.
雷林旖,曹原,姚进. 小胶质细胞参与的细胞间通讯在视网膜神经血管单元中的作用[J]. 中华实验眼科杂志,2024,42(11):1060-1064.
DOI:10.3760/cma.j.cn115989-20230627-00025版权归中华医学会所有。
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