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Antigens derived from engulfed apoptotic bodies that are presented by dendritic cells can amplify Ag-specific T-cells. Accelerated co-cultured DC (acDC) strategy keeps lymphocytes in contact with differentiating DCs. Therefore, Ag-specific T-cell activation can occur during DC maturation. Our aim was to prepare DCs by acDC method and check the subsequent engulfment of the apoptotic body by acDC. We have proposed that this method could be feasible if we transfect the apoptotic bodies with the antigen. DCs were prepared using acDC method and their maturation markers were confirmed by flow cytometry. Ultraviolet was used for inducing apoptosis in the PBMCs and induction of apoptosis checked by propidium iodide and 7-aminoactinomycin D staining. Flow cytometry and immunohistochemistry were used for checking the uptake of apoptotic bodies by the DCs. The alloreactivity against apoptotic bodies was examined by enzyme-linked immunospot (ELISPOT) assay. Results showed that 40.4% of DCs could efficiently engulf the apoptotic bodies. The results indicated that acDC method is capable to isolate a high yield of DCs, and these cells could properly engulf the apoptotic bodies, more works should be performed to use this method for Ag discovery through delivering the Ag by apoptotic bodies into the DCs.

Accelerated co-cultured dendritic cell (acDC) loaded with autologous apoptotic bodies might be a promising approach for antigen delivery