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THE ESTABLISHMENT OF A NEW ANIMAL MODEL FOR GASTRIC CANCER STUDY BY ORTHOTO PIC IMPLANTATION OF GASTRIC CANCER CELLS INTO ATHYMIC NUDE MICE
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作者 曾知真 施尧 +3 位作者 萧树东 江绍基 张素胤 殳裕华 《Medical Bulletin of Shanghai Jiaotong University》 CAS 1992年第1期32-37,共6页
An animal model mimicking human gastric cancer by gastric wall implantation technique in athymic nude mice was reported. Two human gastric cancer cell lines. MKN-45 and MKN-28, were used in this study. All animals wit... An animal model mimicking human gastric cancer by gastric wall implantation technique in athymic nude mice was reported. Two human gastric cancer cell lines. MKN-45 and MKN-28, were used in this study. All animals with gastric wall implantation of cancer cells of these two cell lines developed grossly visible gastric tumors after 3-4 weeks of implantation. Histopathological examination showed that tumors prirnarily grew at serosal side of stomach, and progressively invaded the gastric mucosa, but none showed metastasis in this study. All tumor-bearing animals died within 5-8 weeks after implantation. These results indicated that gastric wall of nude mice provided a good soil for growth and propagation of human gastric cancer cells. The model was useful for in vivo study on biological behavior of various types of human gastric cancers. 展开更多
关键词 stomach neoplasm animal model athymic nude mouse tumor implantation
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脐血干细胞表达转基因TNF-α联合溶瘤病毒对小鼠胃癌移植瘤抑制和杀伤作用 被引量:3
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作者 朱新红 马贵亮 +4 位作者 毛伟征 李谦 战淑惠 周少飞 林存智 《中华肿瘤防治杂志》 CAS 北大核心 2015年第5期330-334,共5页
目的探讨脐血间质干细胞(umbilical cord blood mesenchymal stem cells,UCB-MSCs)表达转基因肿瘤坏死因子-α(tumor necrosis factor,TNF-α)联合溶瘤病毒-新城疫病毒(newcastle disease virus,NDV)抑制和杀伤胃癌的作用。方法构建带有... 目的探讨脐血间质干细胞(umbilical cord blood mesenchymal stem cells,UCB-MSCs)表达转基因肿瘤坏死因子-α(tumor necrosis factor,TNF-α)联合溶瘤病毒-新城疫病毒(newcastle disease virus,NDV)抑制和杀伤胃癌的作用。方法构建带有人TNF-α基因的慢病毒载体,感染人脐血间质干细胞,获得重组慢病毒感染的脐血间质干细胞(MSC-TNF-α)。人胃癌细胞SGC-7901注射到裸鼠腹股沟皮下建立胃癌移植瘤裸鼠模型,荷瘤裸鼠分为MSC-TNF-α组、MSC-TNF-α联合溶瘤病毒组和生理盐水(NaCl)对照组,每组5只;对3组裸鼠瘤周分别注射MSC-TNF-α、MSC-TNF-α+溶瘤病毒和NaCl,隔日1次,共3次;第4周取材,观察注射前后瘤体生长情况。反转录PCR法测定3组胃癌组织中TNF-αmRNA表达;病理切片观察瘤体坏死面积及肿瘤细胞凋亡情况。结果 MSC-TNF-α组裸鼠肿瘤体积为(1.40±0.23)cm3,MSC-TNF-α+溶瘤病毒组为(0.94±0.28)cm3,NaCl组为(2.88±0.28)cm3,MSC-TNF-α+溶瘤病毒组与MSC-TNF-α组比较,差异有统计学意义,t=2.39,P=0.044;MSC-TNF-α组与NaCl组比较,差异有统计学意义,t=7.72,P<0.001。MSC-TNF-α组TNF-αmRNA相对表达量为5.96±0.87,NaCl组为1.71±0.75,两组比较差异有统计学意义,t=6.652,P<0.001;MSC-TNF-α+溶瘤病毒组为5.81±1.11,与NaCl组比较,差异有统计学意义,t=6.423,P<0.001;MSC-TNF-α组与MSC-TNF-α+溶瘤病毒组比较,差异无统计学意义,t=0.229,P=0.825。病理切片显示,MSC-TNF-α+溶瘤病毒组坏死面积最大。Hoechst凋亡检测示,MSC-TNF-α+溶瘤病毒组细胞凋亡率最高,两治疗组肝脏和肾脏功能检测均正常。结论转基因脐血间质干细胞旁分泌TNF-α联合溶瘤病毒对胃癌细胞具有明显的抑制杀伤作用。 展开更多
关键词 胃肿瘤 肿瘤坏死因子-Α 脐血干细胞 溶瘤病毒 动物模型 裸鼠
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