Transplantation of human umbilical cord-derived endothelial progenitor cells promotes re-endothelialization of the injured carotid artery after balloon injury in New Zealand white rabbits

作     者：HUCheng-heng KE Xiao CHEN Kui YANG Da-ya DU Zhi-min WU Gui-fu 

作者机构：Division of Cardiology First Affiliated Hospital of Sun Yat-senUniversity Guangzhou Guangdong 510080 China Key Laboratory on Assisted Circulation Ministry of HealthGuangzhou Guangdong 510080 China People's Hospital of Futian Shenzhen Shenzhen Guangdon 518033 China 

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

年 卷 期：2013年第126卷第8期

页      面：1480-1485页

核心收录：

学科分类：1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 100101[医学-人体解剖与组织胚胎学] 10[医学] 

基　　金：This study was supported by a grant from the National Natural Science Foundation of China (No. 81170272) 

主　　题：endothelial progenitor cell cell transplantation, neointimal, umbilical cord blood 

摘      要：Background Cell transplantation has great potential for promoting endothelial repair and reducing the complications of percutaneous coronary intervention （PCI）. The aim of this study was to investigate the effect of transplantation of human umbilical cord blood endothelial progenitor ceils （EPCs） on injured arteries. Methods Umbilical cord blood mononuclear cells were obtained from post-partum lying-in women, and EPCs were isolated, cultured, expanded and identified by immunofiuorescence. The carotid arterial endothelium of New Zealand white rabbits was injured by dilatation with a 3F balloon, and the EPCs were injected into the lumen of the injured artery in the transplanted group （n=16）, while an equal volume of phosphated buffered saline （PBS） was injected into the control group after balloon injury （n=16）. The animals were sacrificed after either 2 or 4 weeks, and the grafted cells were identified by double immunofluorescence staining with human nuclear antigen （HNA） and CD31 antibodies. Arterial cross sections were analyzed by pathology, immunohistochemisty and morphometry to evaluate the reparative effects of EPCs. Proliferating cell nuclear antigen （PCNA） and transforming growth factor （TGF）-131 mRNA expression were detected by reverse transcription-polymerase chain reaction （RT-PCR）. Results Fluorescence-labeled EPCs were found in the neointima. The neointimal area and the neointimal/medial area ratio were significantly lower in the transplanted group than in the control group （P 〈0.05）. von Willebrand factor （vWF） immunohistostaining showed more VWF-positive cells in the transplanted animals than in the controls （8.75±2.92 vs. 4.50±1.77, P 〈0.05）. Compared with the control group, the transplanted group had lower expression of PCNA mRNA （0.67±0.11 vs. 1.25±0.40, P 〈0.01 ）and higher expression of TGF-β1 mRNA （1.10±0.21 vs. 0.82±0.07, P 〈0.05）. Conclusions EPCs derived from human umbilical cord blood were successfully transplanted into injured vessels. The tra