Vaccination with chemokine genetransfected tumor cells may be a new apporach to cancer treatment. Macrohage inflammatory protein1α (MIP1α) is a new type of chemokines which has chemotactic activity on effector cells...Vaccination with chemokine genetransfected tumor cells may be a new apporach to cancer treatment. Macrohage inflammatory protein1α (MIP1α) is a new type of chemokines which has chemotactic activity on effector cells. In the present study, the B16 melanoma cells were transfected with recombinant adenovirus harboring murine MIP1α gene. The biological characteristics of the MIP1α gene transfected B16 melanoma cells were investigated. The level of MIP1α in the supernatant of genetransfected melanoma cells was 368±24 ng/ml/106/24hr. This supernatant showed strong chematactic activity for NK cells, CD4+ T cells, CD8+ T cells or the freshly isolated peritoneal macrophages. Though the in vitro growth were not altered, the tumorigenicity of the genetransfected B16 melanoma cells decreased signicantly. The infiltration of inflammatory cells into the tumor mass formed by MIP1α genetransfected B16 cells were much more obvious than that by wildtype B16 cells or B16 cells transfected with the control gene. However, the survival time of the mice bearing B16 melanoma cells transfected with MIP1α gene was not prolonged and the NK, CTL activity remianed unchanged. We suggested that the in vivo phenomenon may be related to the high toxicity of the MIP1 α as a strong nonspecific inflammatory mediator.展开更多
结核病是由结核分枝杆菌引起的感染性疾病。结核病的发生发展受多种因素影响,其中自然抵抗相关巨噬细胞蛋白1(natural resistance-associated macrophage protein 1,NRAMP1)基因多态性与结核易感性密切相关。目前,自然抵抗相关巨噬细胞...结核病是由结核分枝杆菌引起的感染性疾病。结核病的发生发展受多种因素影响,其中自然抵抗相关巨噬细胞蛋白1(natural resistance-associated macrophage protein 1,NRAMP1)基因多态性与结核易感性密切相关。目前,自然抵抗相关巨噬细胞蛋白1基因主要有4个单核苷酸位点多态性与结核病有关:5'(GT)n、INT4、D543N和3'UTR。本文就自然抵抗相关巨噬细胞蛋白1基因与结核病的关系予以综述。展开更多
文摘Vaccination with chemokine genetransfected tumor cells may be a new apporach to cancer treatment. Macrohage inflammatory protein1α (MIP1α) is a new type of chemokines which has chemotactic activity on effector cells. In the present study, the B16 melanoma cells were transfected with recombinant adenovirus harboring murine MIP1α gene. The biological characteristics of the MIP1α gene transfected B16 melanoma cells were investigated. The level of MIP1α in the supernatant of genetransfected melanoma cells was 368±24 ng/ml/106/24hr. This supernatant showed strong chematactic activity for NK cells, CD4+ T cells, CD8+ T cells or the freshly isolated peritoneal macrophages. Though the in vitro growth were not altered, the tumorigenicity of the genetransfected B16 melanoma cells decreased signicantly. The infiltration of inflammatory cells into the tumor mass formed by MIP1α genetransfected B16 cells were much more obvious than that by wildtype B16 cells or B16 cells transfected with the control gene. However, the survival time of the mice bearing B16 melanoma cells transfected with MIP1α gene was not prolonged and the NK, CTL activity remianed unchanged. We suggested that the in vivo phenomenon may be related to the high toxicity of the MIP1 α as a strong nonspecific inflammatory mediator.
文摘结核病是由结核分枝杆菌引起的感染性疾病。结核病的发生发展受多种因素影响,其中自然抵抗相关巨噬细胞蛋白1(natural resistance-associated macrophage protein 1,NRAMP1)基因多态性与结核易感性密切相关。目前,自然抵抗相关巨噬细胞蛋白1基因主要有4个单核苷酸位点多态性与结核病有关:5'(GT)n、INT4、D543N和3'UTR。本文就自然抵抗相关巨噬细胞蛋白1基因与结核病的关系予以综述。
