Inflammation induced-endothelial cells release angiogenesis associated-microRNAs into circulation by microparticles

作     者：Zhang Jing Ren Jingyi Chen Hong Geng Qiang 

作者机构：Department of CardiologyPeking University Peoples HospitalBeijing 100044China 

出 版 物：《Chinese Medical Journal》 (中华医学杂志（英文版）)

年 卷 期：2014年第127卷第12期

页      面：2212-2217页

核心收录：

学科分类：0710[理学-生物学] 071010[理学-生物化学与分子生物学] 1002[医学-临床医学] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 071003[理学-生理学] 

基　　金：This project was supported by grants from the National Natural Science Foundation of China (NSFC) (No.81270274) the Beijing Natural Science Foundation (No.7132225) and the Capital Health Research and Development of Special Funds (No.2011 4022 03) 

主　　题：microRNAs atherosclerosis inflammation microparticle 

摘      要：Background Endothelial cells derived microRNAs can be detected in plasma and serum and there is evidence that inflammatory disease states may affect the levels of circulating ***,there is no direct proof that inflammation induces endothelial cells to release microRNAs into *** study aimed to explore whether inflammation could induce endothelial cells to release microRNAs into circulation and to investigate whether these released microRNAs derived from endothelial cells were transported in *** Microparticles were isolated from human atherosclerotic plaques with an active inflammatory phenotype and normal vascular *** cytometry and real-time PCR were used to detect the levels of microparticles and *** umbilical vein endothelial cells （HUVEC） was treated with tumour necrosis factor α （TNF-α,10 ng/ml） for 24 hours,and then HUVEC and the culture medium were respectively *** By comparing microparticles isolated from human atherosclerotic plaques with an active inflammatory phenotype （n=9） and those from normal vascular tissues （n-9）,we found levels of annexin V＋ microparticles and annexin V＋ CD144＋ microparticles were significantly increased in plaques and angiogenesis associated microRNAs （106b,25,92a and 21） were also significantly increased in microparticles from *** exposure to TNF-α at a concentration of 10 ng/ml （TNF-α group,n=3） or DMEM （control group,n=3） for 24 hours,counts of microparticles and expressions of microRNAs 106b,25,92a and 21 in microparticles isolated from medium significantly ***,there were no differences in the intracellular levels of microRNAs 25,92a or 21 isolated from HUVEC between TNF-α group and control group,while microRNA 106b decreased in TNF-α *** Inflammation could induce endothelial cells to release angiogenesis associated microRNAs into circulation,causing higher levels of circulating endothelial cells derived microRNAs