【摘要】 目的 :观察细胞因子 r IL-2、TNF-α、IFN-γ对抗 CD3 -抗胶质瘤双特异性抗体 (双抗 )的协同作用 ,进一步提高双抗对人脑胶质瘤的治疗作用。 方法 :以人脑胶质瘤细胞株 SHG-4 4为靶细胞 ,健康人或胶质瘤患者的外周血单个核细胞 ( PBMC)为效应细胞 ,以 1 8h3 H-Td R掺入释放法测定细胞毒活性 ,采用单比实验和联合作用等对比分析方法 ,分析各细胞因子 ( r IL-2、TNF-α、IFN-γ)对双抗诱导的细胞毒性作用的影响。 结果 :r IL-2、TNF-α、IFN-γ均可协同提高双抗对人脑胶质瘤的细胞毒作用 ( P<0 .0 5)。来源于恶性胶质瘤患者的效应细胞活性较正常人低 ,r IL-2与双抗可协同增强其活性。结论 :细胞因子 r IL -2、TNF-α、IFN-γ可协同提高双抗对效应细胞的活化 ,充分激活效应细胞 ,增强抗肿瘤免疫能力。更多还原

【Abstract】 Objective: : To observe whether cytokines rIL 2,TNF α,I FN γ and anti CD3/anti glioma bispecific antibody(BsAb) can work coordinately, and to investigate how to further enhance cytotoxicity of T lymphocyte against human glioma cells by BsAb. Methods: There were 12 groups,contr ast method were used to analyze the effect of cytokines rIL 2,TNF α,IFN γ to cytoxicity directed by BsAb by single and combined experiments. Cytotoxicity was assayed by standard 18 h 3H TdR incorporation release. Resul ts: rIL 2,TNF α,IFN γ and BsAb could cooperatively enhance the cy totoxicity of effect cells( P <0.05).The activity of effect cells derived from patients with malignant glioma was lower than that from normal. IL 2,BsAb cou ld cooperatively enhance their activity. Conclusion: Cytokines r IL 2,TNF α,IFN γ and BsAb can cooperatively activate the effect cells and enhance anti tumor immune response.更多还原