血管基质混合物复合软骨细胞外基质源性微载体修复大鼠膝关节软骨缺损的实验研究  

Adipose-derived stromal vascular fraction with cartilage ECM-derived particles for repair of articular cartilage defects in rats

作　　者：陈鹏[1,2,3] 高翔[1,2] 陈兆和[1,2] 窦天旭 李坚[1,2] 侯昂扬 汤贺 彭江 梁庆威 李旭 

机构地区：[1]中国医科大学附属第一医院骨科,沈阳110001 [2]中国医科大学,沈阳110122 [3]中国人民解放军总医院全军骨科研究所,北京100853

出　　处：《中华骨与关节外科杂志》2019年第1期53-57,共5页Chinese Journal of Bone and Joint Surgery

基　　金：辽宁省自然科学基金(2015020503;2015020473)

摘　　要：背景:关节软骨的修复和再生能力很弱,利用软骨组织工程能更好地实现关节软骨的修复和再生。种子细胞、细胞载体作为组织工程的重要组成部分正在进行新的探索。目的:探讨自体脂肪组织来源的血管基质混合物(ASVF)复合软骨细胞外基质源性微载体(CEDPs)修复SD大鼠关节软骨缺损的可行性。方法:从大鼠腹股沟脂肪垫中分离获取ASVF,以湿法粉碎和脱细胞处理得到猪来源CEDPs,将两者混合,修复大鼠膝关节滑车直径2 mm全层软骨缺损。实验按移植物的不同分为空白组、CEDPs组、CEDPs+ASVF组。术后6周、12周取材,对标本进行Micro-CT分析,评估缺损去软骨下骨的重塑情况;标本切片后进行HE染色、甲苯胺蓝染色,以Wakitani评分进行组织学评估。结果:Micro-CT结果显示各组均有软骨下骨重塑,CEDPs+ASVF组的骨体积分数、骨小梁厚度均高于其他两组(P <0.05)。组织学分析显示CEDPs+ASVF组新生组织结构主要为透明软骨,其余两组为纤维组织与透明软骨混合分布,且CEDPs+ASVF组组织学评分高于其他两组。结论:自体ASVF复合CEDPs可用于修复SD大鼠膝关节全层软骨缺损,为修复关节软骨缺损提供了新的思路。Background:Articular cartilage has a weak ability of repair and regeneration.The cartilage tissue engineering can better repair and regenerate articular cartilage.Seed cells and cell vectors,important parts of tissue engineering,are constantly developing.Objective:To explore the feasibility of autologous adipose-derived stromal vascular fraction(ASVF)in combination with cartilage ECM-derived particles(CEDPs)to repair articular cartilage defects in SD rats.Methods:ASVF was isolated from adipose tissue on the groin of SD rats.CEDPs were obtained by wet pulverization and decellularization.The mixture of ASVF and CEDPs was used to repair 2-mm diameter full-thickness cartilage defects,which were made in the femoral trochlea of SD rats.Rats were divided into three groups:blank control group,CEDPs group and CEDPs+ASVF group.At 6 and 12 weeks after operation,Micro-CT scanning,gross observation and histological evaluation were conducted to evaluate the cartilage repairs.Results:Micro-CT results showed that subchondral bone remodeling was seen in each group,and bone volume fraction and trabecular thickness in CEDPs+ASVF group were significantly higher than those in the other two groups(P<0.05).Histological analysis showed that the repaired tissue of CEDPs+ASVF group was mainly hyaline cartilage and the other two groups were mixed with fibrous tissue and hyaline cartilage.Histological score of CEDPs+ASVF group was higher than that in the other two groups.Conclusions:Autologous ASVF with CEDPs can be used to repair the articular cartilage defect in rats.This method is a promise strategy on regeneration of cartilage in the future.

关 键 词：血管基质混合物 细胞外基质 微载体 组织工程 软骨 关节 

分 类 号：R684[医药卫生—骨科学]