Abstract
Objective To investigate the proliferation activity of T lymphocytes induced by dendritic cells modified by proliferating cell nuclear antigen (PCNA)-Epitope and interleukin (IL)-18 genes.Methods The experiment was divided into four groups, including DCs group, empty vector group, PCNAEpitope transfection group and PCNA-Epitope plus IL-18 gene group, and every group was assigned to four EGFP), PCNA-Epitope plasmid [pIRES-EGFP-PCNA(6)] and plasmid loaded PCNA-Epitope and IL-18 gene [pIRES-EGFP-PCNA(6)/IL-18] were transfected into peripheral blood-derived dendritic cells, then cocultured with T lymphocytes respectively. T lymphocytes proliferation was determined by CCK-8 assays.Results The index of stimulation of the pIRES-EGFP-PCNA(6)/IL-18 group was 2. 62 when the ratio transfection group (1. 93). Conclusion DCs treated with the PCNA-Epitope and IL-18 gene could stimulate T lymphocytes proliferation more effectively,and the optimal rio of DCs:T was 1:10. Key words: Dendritic cells; PCNA; Interleukin-18; T lymphocyte
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