Compact bone derived-mesenchymal stem cells protect mice from bleomycin induced lung injury
- VernacularTitle:骨实质来源间质干细胞对博莱霉素诱导小鼠肺损伤的保护作用
- Author:
Li WANG
;
Ni FANG
;
Weijing ZHANG
- Publication Type:Journal Article
- Keywords:
mesenchymal stem cells;
bone;
mice;
pulmonary fibrosis
- From:
Medical Journal of Chinese People's Liberation Army
2001;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the protective function of murine compact bone derived-mesenchymal stem cells(MSCs) on bleomycin-induced lung injury.Methods MSCs were isolated from the mouse compact bone and then cultured.The immunophenotype and differentiation potential of MSCs were identified by flow cytometry and inductive culture.56 female C57BL/6 mice were assigned into eight groups(7 each): normal group,busulfan intraperitoneal administration group(BUS),bleomycin-induced lung injury group(BLM),bleomycin-induced lung injury and busulfan intraperitoneal administration group(BLM+BUS),BLM challenge and MSCs treatment group(BLM+MSCs),BLM challenge and busulfan and MSCs administration group(BLM+BUS+MSCs).According to infused cell number,BLM+MSCs and BLM+BUS+MSCs group were again respectively divided to two subgroups: BLM+MSCs 1 group(5?105 MSCs) and BLM+MSCs 2 group(2.5?105 MSCs),and BLM+ BUS+MSCs 1 group(5?105 MSCs) and BLM+BUS+MSCs 2 group(2.5?105 MSCs),respectively.The mice were sacrificed 14 days after MSCs infusion,and their lungs were removed for pathological analysis and quantification of hydroxyproline.Results Compact bone derived-MSCs were fibroblast-like cells,positive for Sca-1,CD44,CD29,and CD105,but expressed no CD34,CD45,CD11b and CD31.They could differentiate into adipocytes and osteoblasts in vitro.Compact bone derived-MSCs infused by tail vein were capable of protecting lung from injury.In BLM+MSCs group,2.5?105 MSCs infusion demonstrated more efficient protective activity than that of 5?105 MSCs;the lung injury was less severe in BLM+BUS+MSCs group than that in BLM +MSCs group.The content of hydroxyproline in lung tissue of normal,BUS,BLM,BLM+BUS,BLM+MSCs 1,BLM+MSCs 2,BLM+BUS+MSCs 1 and BLM+BUS+MSCs 2 group was 0.72?0.05,0.79?0.10,1.37?0.09,1.22?0.16,1.24?0.14,1.01?0.15,1.03?0.19 and 0.98?0.12?g/mg,respectively.The content of hydroxyproline increased in BLM and BLM+BUS group compared with that in normal group(P
