大鼠C6脑胶质瘤模型的实验研究

应用定向法将体外培养的大鼠C6胶质瘤细胞悬液 10 μl注入大鼠右脑尾状核 ,悬液内含 1%琼脂糖和 1× 10 6个C6细胞。接种后行一般和MRI检查 ,对 5组接种大鼠分别在第 10、15、2 0、2 5天和自然死亡前做主动脉多聚甲醛灌注固定 ,对脑组织和瘤体标本行HE染色。MRI结果表明 ,5 0只接种大鼠脑内均有肿瘤生长 ,远处和颅外转移率为 4%。所建C6脑胶质瘤模型生长稳定、大鼠生存时间易于判定 ,为脑胶质瘤化疗、放疗和基因治疗奠定了实验基础。

THE EXPERIMENTAL STUDY OF A RAT C6 BRAIN TUMOR MODEL

Rat C6 glioma cells were cultured in vitro，and 10μL C6 cell suspension containing 10g/L agarose and 1×106 C6 cells was injected into the right caudate nucleus of rat brains to establish a rat brain-tumor model by directional implantation method.General observation and MRI scan were conducted after implantation.Trans-aorta paraformaldehyde perfusion for 5 group rats having received implantation was carried out at 10,15,20,25,days and before natural death.The tumor-containing samples were prepared histologically by hematoxylin and eosin stains.MRI scan showed that intracerebral growth occurred in 50 implanted rats,with a distant metastasis of 4%.The results indicated that tumor globular intracerebral growth occurred and extracranial growth extension was scarce after implantation.The model was very stable and the implanted rat survival duration is easily determined. The experiment lays the foundation for chemotherapy,radiotherapy and gene therapy of the glioma.