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目的:探讨卵巢癌抗独特型单链抗体6B11scFv/hGMCSF融合蛋白质(6B11GM)作为肿瘤疫苗的可能性。方法:采用体外T细胞增殖试验,对6B11GM刺激T细胞的能力进行测定,并用流式细胞仪对T细胞表型及APCMHCⅡ表达情况进行测定,测定了外周血单个核细胞经6B11GM激活后对卵巢癌细胞系的非MHC限制的杀伤活性。结果:6B11GM及6B11均能引起特异的T细胞增殖,但6B11GM组的增殖明显高于6B11组,以CD4+增殖为主。6B11GM能明显增加抗原提呈细胞(antigenpresentingcel,APC)的MHCⅡ表达,使APC更有效地摄取抗原,激活非MHC限制的杀伤活性。结论:6B11GM能引起细胞免疫反应,作为疫苗具有良好的前景
Objective: To investigate the possibility of ovarian cancer anti-idiotypic single chain antibody 6B11scFv / hGM-CSF fusion protein (6B11GM) as a tumor vaccine. Methods: T cell proliferation in vitro was used to test the ability of 6B11GM to stimulate T cells. The T cell phenotypes and the expression of APCMHC Ⅱ were determined by flow cytometry. The activation of peripheral blood mononuclear cells Non-MHC-restricted cytotoxic activity of cell lines. Results: 6B11GM and 6B11 all induced specific T cell proliferation. However, the proliferation of 6B11GM group was significantly higher than that of 6B11 group, mainly CD4 + proliferation. 6B11GM significantly increased MHC II expression of antigen presenting cells (APCs), allowing APCs to more efficiently uptake antigens and activate non-MHC-restricted cytotoxic activity. Conclusion: 6B11GM can induce cellular immune response and has good prospects as a vaccine