摘要
目的探讨混合脐血间充质干细胞(UCB-MSCs)体外抑制C6胶质瘤细胞增殖机制。方法采用免疫组织化学检测c6细胞B细胞淋巴瘤/白血病-2(bcl-2)和半胱氨酰天冬氨酸特异性蛋白酶(Caspase)-3蛋白的表达,E/T(E:效应细胞即UCB—MSCs,T:靶细胞即C6细胞)=0:1、10:1、(5+5):l时,采用免疫组织化学检测C6细胞的bcl-2和Caspase-3蛋白的表达。结果混合UCB—MSCs对c6细胞在蛋白表达上有使凋亡蛋白Caspase-3表达增高的趋势,抑凋亡蛋白bcl-2表达降低的趋势;促凋亡蛋白表达量和凋亡细胞数随E/T的比例增高而增高,呈现比例依赖关系;当E/T比例相同时,混合组[E/T:(5+5):1,(564-5)%]UCB-MSCs促凋亡蛋白表达量比单份组[E/T:10:1,(33±6)%]高;抑凋亡蛋白表达量混合组[E/T=(5+5):1,(27±3)%],单份组[E/T=10:1,(46±7)%]。结论与单份组比较,混合UCB-MSCs对体外c6细胞更具有抑制增殖作用。
Objective Study on the mechanisms of the mixed umbilical cord blood-derived mesen chymal stem cells in inhibiting proliferation of C6 glioma cells. It provided experimental and theoretical ba sis for the mixed umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs) treatment of C6 glio ma in vivo. Methods B cell lymphoma/leukemia-2 ( bcl-2 ) and Cysteinyl aspartate-specific protease-3 (Caspase-3) protein expression of C6 cells were analyzed by immunohistochemistry. Results The mixed UCB-MSCs inhibited the proliferation of enhanced green fluorescent protein (EGFP) -C6 glioma ceils in vitro. When the E/T ratio is same, Expression of Caspase-3 in the mixed group [ E/T = (5 + 5): 1, (56 ± 5)% ], but the single group is [ E,/T = 10: 1, ( 33 + 6 ) % ] ; Expression of bcl-2 in mixed group is [ E/T = (5 + 5) : 1, (27 ± 3) % ], but a single group is [ E/T = 10: 1, (46 + 7) % ]. Caspase-3 protein expression tended to increase, however, bcl-2 protein expression decreased. Conclusion Compared with the single group, the mixed UCB-MSCs could inhibit proliferation of C6 cells in vitro.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2014年第4期777-778,共2页
Chinese Journal of Experimental Surgery
关键词
脐血
间充质干细胞
C6
Cord blood
Mesenchymal stem cells
C6