[关键词]
[摘要]
青光眼所致的视神经病变,其核心病理环节是视网膜神经节细胞(RGC)的进行性丢失。作为视网膜内主要的胶质细胞,Müller胶质细胞在青光眼病理微环境中发挥关键而复杂的双重作用:(1)Müller细胞可通过分泌神经营养因子、与RGC共培养提升其活力以及调节谷氨酸代谢等方式,发挥内源性保护作用。(2)在眼压升高等持续应激下,Müller细胞被机械敏感通道(如TRPV4)激活,转化为反应性胶质增生表型,通过释放炎症因子加剧RGC凋亡,其代谢重编程与表观遗传改变也参与了神经损伤过程。文章系统综述了Müller细胞在青光眼视神经病变中保护与损伤双重性的分子机制研究进展,探讨了通过调控其细胞状态以实现神经保护的治疗新策略,梳理了该领域的主要争议与未解问题,并基于最新研究进展,分析靶向Müller细胞的策略对当前临床治疗的启示及未来发展趋势。
[Key word]
[Abstract]
The core pathological process of optic neuropathy caused by glaucoma is the progressive loss of retinal ganglion cells(RGCs). As the primary glial cells in the retina, Müller glial cells play a crucial and complex dual regulatory role in the pathological microenvironment of glaucoma. On one hand, Müller cells can exert endogenous protective effects by secreting neurotrophic factors, enhancing RGC viability through co-culture, and regulating glutamate metabolism. On the other hand, under sustained stress such as elevated intraocular pressure, Müller cells are activated by mechanosensitive channels(e.g., TRPV4), transforming into a reactive gliosis phenotype. This leads to the release of inflammatory cytokines that exacerbate RGC apoptosis, while their metabolic reprogramming and epigenetic alterations also contribute to the process of neuronal injury. This article systematically reviews the research progress on the dual roles of Müller cells in protecting and damaging the optic nerve in glaucoma, exploring new therapeutic strategies for neuroprotection by regulating their cellular states. It outlines the main controversies and unresolved issues in this field and, based on the latest research advances, analyzes the implications of targeting Müller cells for current clinical treatments and future development trends.
[中图分类号]
[基金项目]
甘肃省卫生健康行业科研项目(No.GSWSKY2024-27); 甘肃省自然科学基金项目(No.25JRRA422); 联勤保障部队第九四○医院基金项目(No.2023YXKY025)