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Journal of Central South University(Medical Sciences) ; (12): 1012-1018, 2008.
Artículo en Chino | WPRIM | ID: wpr-814159

RESUMEN

OBJECTIVE@#To determine the effect of activation of specific anti-tumor cytotoxic T lymphocytes (CTL) and the ability of cross-presentation in vitro by fusion of HLA-A2+ human dendritic cells (DCs) with HLA-A2- melanoma cells.@*METHODS@#The HLA-A2+ human dendritic cells and HLA-A2- melanoma cells were fused by PEG and were cultivated in complete RPMI1640 media containing FCS (10%) and GM-CSF for 24-48 h, and then co-cultured fusion cells with Melan-A specific T cells. HLA-A2- melanoma cells were negative control,While T2 cells and DC+Pts were positive control. The activation of anti-tumor CTL elicited by the fusion cells was detected by intracellular cytokine staining.@*RESULTS@#The immature DC could express CD80, CD83, CD86, HLA-DR, and HLA-ABC,but the mature DC induced by TNF-alpha, PGE-2, and CD40L further highly expressed above molecules. The rate of specific CTL cells primed by the fusion cells was 16.72%+/-4.26%, negative control was 0.21%+/-1.84%,and positive control was 28.60%+/-5.67%. The CTL from vaccine by fusing DC and LAR6 induced lysis of HLA-A2+ LAR1 cells.@*CONCLUSION@#The HLA-A2 restricted specific anti-tumor CTL can be induced in vitro by fusion of HLA-A2+ human dendritic cells with HLA-A2- melanoma cells.


Asunto(s)
Humanos , Presentación de Antígeno , Alergia e Inmunología , Antígenos de Neoplasias , Alergia e Inmunología , Vacunas contra el Cáncer , Alergia e Inmunología , Fusión Celular , Línea Celular Tumoral , Células Dendríticas , Biología Celular , Alergia e Inmunología , Antígeno HLA-A2 , Alergia e Inmunología , Antígeno MART-1 , Alergia e Inmunología , Melanoma , Alergia e Inmunología , Patología , Linfocitos T Citotóxicos , Alergia e Inmunología
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