多药耐药基因的人骨髓细胞转染及其对抗癌药的抗性增强作用

为探讨mdrl基因转染增强人骨髓细胞对抗癌药的抵御能力的可能性.通过脂质体介导,用含人mdrlcDNA表达质粒pHaMDR1/A,将mdrl基因转染人骨髓细胞,分别采用流式细胞术和免疫组化检测转染细胞mdrl基因的表达产物--P糖蛋白(Pgp),并用罗丹明试验证实其生物活性.同时,采用集落培养及抗性试验检测mdrl基因转染的人骨髓细胞对阿霉素、秋水仙碱、长春新碱和Vp16的抵御能力.结果mdrl基因被成功地导入了人骨髓细胞并获得了表达,罗丹明试验证实了Pgp具有完整的生物功能.mdrl基因转染的人骨髓细胞对上述抗癌药的抵御能力明显增强.

ENHANCEMENT OF RESISTANCE OF HUMAN BONE MARROW CELLS TO ANTICANCER AGENTS BY mdrl GENE TRANSFECTION

To investigate the possibility to enhance resistance of human bone marrow cells to anticancer agents by transfection of mdrl gene. We transferred mdrl gene into human bone marrow cells with plasmid pHaMDR1/A containing human mdrl cDNA by Lipofectin.Pgp,mdrl gene expression product was detected by both flow cytometry and immunohistochemistry.Also,Pgp function was tested by efflux study using rhodamine.The resistance of human bone marrow cells to anticancer agents was assayed by color forming unit culture after exposure to Vincristine,Daunomycin, and Vp16.The results showed that mdrl gene was successfully transferred into human bone marrow cells, and it expressed.Biological activity of Pgp was confirmed by efflux study using rhodamine.Transferred human bone marrow cells possessed resistance to anticancer agents.It suggested that transfection of mdrl gene can increase resistance of human bone marrow cells to anticancer agents.