Involvement of Kv1.5 protein in oxidative vascular endothelial cell injury.
Involvement of Kv1.5 protein in oxidative vascular endothelial cell injury.
复制标题
Kv1.5蛋白参与氧化性血管内皮细胞损伤
DOI:
10.1371/journal.pone.0049758
复制
发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Guan YY
中科院分区:
文献类型:
--
作者:
Chen WL;Huang XQ;Zhao LY;Li J;Chen JW;Xiao Y;Huang YY;Liu J;Wang GL;Guan YY
Endothelial injury related to oxidative stress is a key event in cardiovascular diseases, such as hypertension and atherosclerosis. The activation of the redox-sensitive Kv1.5 potassium channel mediates mitochondrial reactive oxygen species (ROS)-induced apoptosis in vascular smooth muscle cells and some cancer cells. Kv1.5 channel is therefore taken as a new potential therapeutic target for pulmonary hypertension and cancers. Although Kv1.5 is abundantly expressed in vascular endothelium, there is little knowledge of its role in endothelial injury related to oxidative stress. We found that DPO-1, a specific inhibitor of Kv1.5, attenuated H2O2-evoked endothelial cell apoptosis in an in vivo rat carotid arterial model. In human umbilical vein endothelial cells (HUVECs) and human pulmonary arterial endothelial cells (HPAECs), angiotensin II and oxLDL time- or concentration-dependently enhanced Kv1.5 protein expression in parallel with the production of intracellular ROS and endothelial cell injury. Moreover, siRNA-mediated knockdown of Kv1.5 attenuated, whereas adenovirus-mediated Kv1.5 cDNA overexpression enhanced oxLDL–induced cellular damage, NADPH oxidase and mitochondria-derived ROS production and restored the decrease in protein expression of mitochondria uncoupling protein 2 (UCP2). Collectively, these data suggest that Kv1.5 may play an important role in oxidative vascular endothelial injury.
登录
查看更多内容
影响因子:
7.3
作者:
Baliga RS;MacAllister RJ;Hobbs AJ
通讯作者:
Hobbs AJ
影响因子:
6.6
作者:
Frey RS;Ushio-Fukai M;Malik AB
通讯作者:
Malik AB
影响因子:
5.5
作者:
Brevnova, EE;Platoshyn, O;Yuan, JXJ
通讯作者:
Yuan, JXJ
DOI:
10.1007/978-1-60327-017-5_15
发表时间:
2009-01-01
期刊:
APOPTOSIS: METHODS AND PROTOCOLS, SECOND EDITION
影响因子:
--
作者:
Derdak, Zoltan;Garcia, Tamako A.;Baffy, Gyorgy
通讯作者:
Baffy, Gyorgy
影响因子:
20.1
作者:
He X;Gao X;Peng L;Wang S;Zhu Y;Ma H;Lin J;Duan DD
通讯作者:
Duan DD