Figure 5From: Ex vivo development, expansion and in vivoanalysis of a novel lineage of dendritic cells from hematopoietic stem cellsFunctional analyses of the ex vivo expanded DCPs. (A) Analysis of antigen capture function of the ex vivo derived DCPs. Antigen capture was demonstrated using dextran-FITC or OVA-FITC particle internalization followed by flow cytometry analysis. Examples of FITC-positive control PBMC-derived DCs are shown at top; antigen capture was detected at 37°C but not at 4°C. (B) Analysis of antigen-specific T cell stimulation function. DCs were transduced with LVs encoding a control truncated NGFR (tNGFR) protein or BMLF protein of EBV, and incubated with autologous T cells (from the same HLA-A*0201 donor) for 10-12 days. The BMLF-specific A*0201 TCR bearing T cells were detected using a PE-conjugated MHC-peptide pentamer by flow cytometry (left panel). Antigen-specific effector function was analyzed based on intracellular expression of IFN-γ as described in Materials and Methods.Back to article page