Tongqiao Mingmu formula alleviates retinal ganglion cell autophagy through PI3K/AKT/mTOR pathway
Tongqiao Mingmu formula alleviates retinal ganglion cell autophagy through PI3K/AKT/mTOR pathway
复制标题
DOI：
10.1002/ar.25060
复制
发表时间：
2022-09
期刊：
影响因子：
--
通讯作者：
Liyuan Wang;Tianyang Yu;Feixue Dong;Jiayu Xu;Jin Fu;He Sun
中科院分区：
文献类型：
--
作者：
Liyuan Wang;Tianyang Yu;Feixue Dong;Jiayu Xu;Jin Fu;He Sun
Glaucoma is a severe blindness‐causing optic nerve disease characterized by a loss of retinal ganglion cells (RGCs). Previous studies have shown that the Tongqiao Mingmu (TQMM) formula can reduce retinal and optic nerve damage, but its mechanism of action requires further elucidation. In this study, an RGC injury model was prepared using glutamate and then treated with serum‐containing drug from the TQMM formula (hereafter called “TQMM formula serum”). In the glutamate‐induced RGC injury model, cell viability decreased with an increase in glutamate concentration, whereas the expression of autophagy‐related biomarkers LC3 and Belicin‐1 increased. An adenovirus transfection experiment revealed that glutamate markedly promoted autophagic flux in RGCs. Notably, TQMM formula serum inhibited the expression of autophagy‐related biomarkers, reduced autophagy flux, and reversed the damage caused by glutamate to RGCs. Furthermore, the PI3K inhibitor LY294002 was used to intervene in the RGC autophagy model and was found to suppress the PI3K/AKT/mTOR pathway and enhance RGC autophagy. However, TQMM formula serum could generate an opposite effect and upregulate the expressions of the PI3K/AKT/mTOR pathway genes and proteins. In conclusion, the TQMM formula can prevent glutamate‐induced autophagy in RGCs, possibly by activating the PI3K/AKT/mTOR pathway and reducing the expression of autophagy‐related biomarkers LC3 and Belicin‐1 to attenuate autophagy and maintain RGC viability.
