目的:本研究旨在探讨干扰素-a(IFN-a)、白细胞介素-2(IL-2)、肿瘤坏死因子(TNF-a)单一、协同以及与化疗药物DDP的联合作用杀伤宫颈癌H e la细胞株的影响。方法:应用四M TT比色法检测与化疗药物DDP单独或联合应用组及药物作用的12h与24h...目的:本研究旨在探讨干扰素-a(IFN-a)、白细胞介素-2(IL-2)、肿瘤坏死因子(TNF-a)单一、协同以及与化疗药物DDP的联合作用杀伤宫颈癌H e la细胞株的影响。方法:应用四M TT比色法检测与化疗药物DDP单独或联合应用组及药物作用的12h与24h的光密度值(OD),计算杀伤率。台盼蓝拒染计算杀伤率对照。结果:单独应用三种细胞因子时,IFN-a、TNF-a对宫颈癌H e la有细胞毒作用。IFN-a、IL-2、TNF-a联合作用具有协同作用,均与单一应用具有显著性差异(P<0.01)。细胞因子均可以增强顺铂(DDP)的抑瘤作用并与其作用的先后及时间具有依赖关系。结论:M TT比色法为临床肿瘤化疗的药物敏感性检测提供了简便、快速的方法。不同类型的肿瘤有着不同的药敏谱。干扰素-a(IFN-a)、肿瘤坏死因子(TNF-a)、白细胞介素-2(IL-2)与DDP联合具有协同作用,为宫颈癌病人化疗提供了理想的参考方案。展开更多
Background:Mucous membrane pemphigoid (MMP) is a chronic blistering skin dise ase frequently associated with circul atingautoantibodies directed to a number o f antigens including the NC16A region of BP180. NC16A doma...Background:Mucous membrane pemphigoid (MMP) is a chronic blistering skin dise ase frequently associated with circul atingautoantibodies directed to a number o f antigens including the NC16A region of BP180. NC16A domain-specific T cells h ave been identified in the blood of individuals with bullous pemphigoid (BP), pe mphigoid gestationis and linear IgA disease, but there are no data investigating the potential role for such T cells in the pathogenesis of MMP. Objectives:To test the hypothesis that NC16A-specific T cells exist in the peripheral blood o f individuals with MMP. Methods:We isolated peripheral blood mononuclear cells from 10 patients with MMP, 17 with BP and 10 healthy controls and examined the i mmunogenicity of overlapping peptides spanning the NC16A domain using interferon (IFN)-γenzyme-linked immunospot assay. Results:Significant IFN-γproductio n was observed in response to the NC16A peptides in two of the patients with MMP and two of the patients with BP but in none of the normal controls. These data suggest that in a minority of individuals with MMP, NC16A domain-specific T cel ls circulate at sufficiently high frequency to be detectable directly ex vivo an d to show rapid effector function. Conclusions:Overall, these findings are the first to examine the potential role for antigen-specific autoreactive T cells i n the pathogenesis of MMP, and confirm that in some individuals the NC16A domain may be an important target antigen.展开更多
文摘目的:本研究旨在探讨干扰素-a(IFN-a)、白细胞介素-2(IL-2)、肿瘤坏死因子(TNF-a)单一、协同以及与化疗药物DDP的联合作用杀伤宫颈癌H e la细胞株的影响。方法:应用四M TT比色法检测与化疗药物DDP单独或联合应用组及药物作用的12h与24h的光密度值(OD),计算杀伤率。台盼蓝拒染计算杀伤率对照。结果:单独应用三种细胞因子时,IFN-a、TNF-a对宫颈癌H e la有细胞毒作用。IFN-a、IL-2、TNF-a联合作用具有协同作用,均与单一应用具有显著性差异(P<0.01)。细胞因子均可以增强顺铂(DDP)的抑瘤作用并与其作用的先后及时间具有依赖关系。结论:M TT比色法为临床肿瘤化疗的药物敏感性检测提供了简便、快速的方法。不同类型的肿瘤有着不同的药敏谱。干扰素-a(IFN-a)、肿瘤坏死因子(TNF-a)、白细胞介素-2(IL-2)与DDP联合具有协同作用,为宫颈癌病人化疗提供了理想的参考方案。
文摘Background:Mucous membrane pemphigoid (MMP) is a chronic blistering skin dise ase frequently associated with circul atingautoantibodies directed to a number o f antigens including the NC16A region of BP180. NC16A domain-specific T cells h ave been identified in the blood of individuals with bullous pemphigoid (BP), pe mphigoid gestationis and linear IgA disease, but there are no data investigating the potential role for such T cells in the pathogenesis of MMP. Objectives:To test the hypothesis that NC16A-specific T cells exist in the peripheral blood o f individuals with MMP. Methods:We isolated peripheral blood mononuclear cells from 10 patients with MMP, 17 with BP and 10 healthy controls and examined the i mmunogenicity of overlapping peptides spanning the NC16A domain using interferon (IFN)-γenzyme-linked immunospot assay. Results:Significant IFN-γproductio n was observed in response to the NC16A peptides in two of the patients with MMP and two of the patients with BP but in none of the normal controls. These data suggest that in a minority of individuals with MMP, NC16A domain-specific T cel ls circulate at sufficiently high frequency to be detectable directly ex vivo an d to show rapid effector function. Conclusions:Overall, these findings are the first to examine the potential role for antigen-specific autoreactive T cells i n the pathogenesis of MMP, and confirm that in some individuals the NC16A domain may be an important target antigen.
