摘要
目的探讨制备去细胞化肝脏生物支架(decellularize d liver biological scaffold,DLBS)的新方法,寻找适合肝脏组织工程的新型支架材料。方法 (1)采用化学去垢剂—酶联合去细胞化技术制备去细胞化全肝脏生物支架,并观察去细胞化效果;(2)DLBS与C3A及骨髓间充质干细胞体外共培养,观察DLBS细胞相容性。(3)通过四氮唑盐比色法(MTTAssay)观察DLBS对C3A的增殖作用。(4)将DLBS植入SD大鼠背部皮下,4周后处死大鼠,观察鉴定DLBS的组织相容性。结果通过HE染色、扫描电镜观察证实经过化学去垢剂—酶联合去细胞方法制备的去细胞化全肝生物支架不含细胞成分,只剩下胶原、弹性蛋白等支架成分;体外培养实验发现,L02及骨髓间充质细胞能够与DLBS粘连、生长。MTTAssay检测证实DLBS有促进C3A生长、增殖的作用。结论利用化学去垢剂—酶联合去细胞化技术制备的DLBS脱细胞彻底、细胞外基质保留较完整,并且有促进细胞粘附、增殖和分化的作用,是一种较为理想的生物支架材料。
Objective To develop a novel method for preparing decellularized liver biological scaffold （DLBS） for liver tissue engineering. Methods DLBS was prepared by treatment of rat livers with detergent and enzymatic cell extraction and observed under optical and scanning electron microscopes. To assess the biocompatibility of the product, C3A cells and bone marrow-derived mesenchymal cells （BM-MSCs） were cocultured with DLBS as the scaffold, and the effect of DLBS on the proliferation of C3A ceils was evaluated by MTT assay.
出处
《南方医科大学学报》
CAS
CSCD
北大核心
2011年第1期69-72,共4页
Journal of Southern Medical University
基金
国家高新技术研究项目863计划(2006AA02A141)~~
