Effect of lycopene on oxidized low-density lipoprotein induced apoptosis of cerebral vascular endothelial cells by regulating the RAS homologous gene family member A/Rho-related kinase signaling pathway
- VernacularTitle:番茄红素调节RAS同源基因家族成员A/Rho相关激酶信号通路对氧化低密度脂蛋白诱导脑血管内皮细胞凋亡的影响
- Author:
Junchen ZHANG
1
;
Wuhua XU
;
Li ZHONG
Author Information
- Keywords: cerebrovascular endothelial cells; RAS homologous gene family member A/Rho-related kinase signaling pathway; lycopene; oxidized low-density lipoprotein; apoptosis
- From: Journal of Clinical Medicine in Practice 2023;27(22):44-49
- CountryChina
- Language:Chinese
- Abstract: Objective To investigate the effect of lycopene(LYC)on the oxidized low-density lipoprotein(ox-LDL)induced apoptosis of cerebral vascular endothelial cells(EC)by regulating the RAS homologous gene family member A(RhoA)/Rho-related kinase(ROCK)signaling pathway.Methods Human brain microvascular endothelial cells(HBMECs)without any treatments were de-signed as NC group;the HBMECs treated with ox-LDL were divided into ox-LDL group,LYC group(HBMECs treated with 0.5 μmol/L LYC),lysophosphatidic acid(LPA)group(HBMECs treated with 5 μmol/L RhoA/ROCK signaling pathway activator LPA),and LYC+LPA group(HBMECs treated with 0.5 μmol/L LYC and 5 μmol/L LPA);after 24 hours of treatment,they were used for subsequent experiments.Enzyme-linked immunosorbent assay(ELISA)was used to detect the cyto-kine levels of HBMECs;CCK-8 method was used to detect the proliferation of HBMECs;flow cy-tometry was used to detect the apoptosis rate of HBMECs;the Western blot was used to detect the expression levels of platelet endothelial cell adhesion molecule-1(CD31),smooth muscle(SM)22α,BCL-2 associated X protein(Bax),B-cell lymphoma/leukemia 2 protein(Bcl-2),cleaved-Caspase-3,and RhoA/ROCK pathway related proteins.Results Compared with the NC group,the levels of monocyte chemotactic protein-1(MCP-1),interleukin-6(IL-6),vascular endothelial cell adhesion molecule-1(VCAM-1),apoptosis rate of HBMECs,the Bax,cleaved-Caspase-3,SM22α,RhoA and ROCK1 proteins in the ox-LDL group increased significantly,while the OD val-ue and the levels of Bcl-2 and CD31 proteins decreased significantly(P＜0.05);compared with the ox-LDL group,the levels of MCP-1,IL-6,VCAM-1,apoptosis rate of HBMECs,the Bax,cleaved-Caspase-3,SM22α,RhoA,and ROCK1 proteins in the LYC group decreased significantly,while the OD value and the levels of Bcl-2 and CD31 proteins increased significantly(P＜0.05),but the trends in the LPA group were opposite;LPA weakened the improvement effect of LYC on ap-optosis of HBMECs induced by ox-LDL.Conclusion LYC may reduce apoptosis of HBMECs by inhibiting the RhoA/ROCK signaling pathway.
