在2010年美国、瑞典、以色列、希腊、荷兰、瑞士、澳大利亚等国的一些专家共同提出的关于MDR（multidrug resistant）、XDR（extensively drug resistant）、PDR （pandrug resistant）术语国际标准化建议（草案）的基础（见本刊2011年1...在2010年美国、瑞典、以色列、希腊、荷兰、瑞士、澳大利亚等国的一些专家共同提出的关于MDR（multidrug resistant）、XDR（extensively drug resistant）、PDR （pandrug resistant）术语国际标准化建议（草案）的基础（见本刊2011年10卷3期238-240页）上, Magiorakos等专家于2012年在〈Clinical Microbiology and Infection〉杂志上正式发表了MDR、XDR、PDR耐药菌暂行标准定义.与2010版相比,增加或删除了一些耐药菌判断的代表性抗菌药物,修改了部分肠杆菌科细菌中的固有耐药菌.现将主要部分摘译如下.展开更多
Background Routine treatment of cancer such as surgery, radiation or chemotherapy is sometimes unable to erdiacate metastatic malignant cells. So we tried a new method and increased the adoptive immunotherapy of Cyto...Background Routine treatment of cancer such as surgery, radiation or chemotherapy is sometimes unable to erdiacate metastatic malignant cells. So we tried a new method and increased the adoptive immunotherapy of Cytokine-induced killer (CIK) cells in tumor patients and the multidrug resistance (mdr1) cDNA was transfected into CIK cells. Methods CIK cells were obtained from peripheral blood and induced by IFN-γ, anti-CD3 monoclonal antibody, IL-2 and IL-1. CIK cells were transfected with plasmid PHaMDR containing human mdr1 cDNA by electroporation. RT-PCR was used to detect mdr1 mRNA in transfected CIK cells. P-glycoprotein (P-gp) expressed on surface of CIK cells was assayed by FITC-conjugated anti-P-gp monoclonal antibody and flow cytometry. Multidrug resistance to doxorubicin and colchicine and cytotoxic activity to human breast cancer cell line MCF7 were performed using MTT method. Results mdr1 mRNA was detected in transfected CIK cells. P-gp was expressed on the surface of the transfected CIK cells, and the P-gp positive cells reached 21%-37% of the total CIK cells after transfection. The IC50 to doxorubicin increased to 22.3-45.8 times, and that to colchicines to 6.7-11.35 times, as compared to those of untransfected CIK cells. However, the cytotoxic activity to MCF7 cell line remained unaltered.Conclusions CIK cells were successfully transfected with mdr1 cDNA by using electroporation. The transfected CIK cells had the characteristics of multidrug resistance without change in their cytotoxic activity to tumor cells.展开更多
文摘在2010年美国、瑞典、以色列、希腊、荷兰、瑞士、澳大利亚等国的一些专家共同提出的关于MDR（multidrug resistant）、XDR（extensively drug resistant）、PDR （pandrug resistant）术语国际标准化建议（草案）的基础（见本刊2011年10卷3期238-240页）上, Magiorakos等专家于2012年在〈Clinical Microbiology and Infection〉杂志上正式发表了MDR、XDR、PDR耐药菌暂行标准定义.与2010版相比,增加或删除了一些耐药菌判断的代表性抗菌药物,修改了部分肠杆菌科细菌中的固有耐药菌.现将主要部分摘译如下.
文摘Background Routine treatment of cancer such as surgery, radiation or chemotherapy is sometimes unable to erdiacate metastatic malignant cells. So we tried a new method and increased the adoptive immunotherapy of Cytokine-induced killer (CIK) cells in tumor patients and the multidrug resistance (mdr1) cDNA was transfected into CIK cells. Methods CIK cells were obtained from peripheral blood and induced by IFN-γ, anti-CD3 monoclonal antibody, IL-2 and IL-1. CIK cells were transfected with plasmid PHaMDR containing human mdr1 cDNA by electroporation. RT-PCR was used to detect mdr1 mRNA in transfected CIK cells. P-glycoprotein (P-gp) expressed on surface of CIK cells was assayed by FITC-conjugated anti-P-gp monoclonal antibody and flow cytometry. Multidrug resistance to doxorubicin and colchicine and cytotoxic activity to human breast cancer cell line MCF7 were performed using MTT method. Results mdr1 mRNA was detected in transfected CIK cells. P-gp was expressed on the surface of the transfected CIK cells, and the P-gp positive cells reached 21%-37% of the total CIK cells after transfection. The IC50 to doxorubicin increased to 22.3-45.8 times, and that to colchicines to 6.7-11.35 times, as compared to those of untransfected CIK cells. However, the cytotoxic activity to MCF7 cell line remained unaltered.Conclusions CIK cells were successfully transfected with mdr1 cDNA by using electroporation. The transfected CIK cells had the characteristics of multidrug resistance without change in their cytotoxic activity to tumor cells.
