Maturation of Dendritic Cells (DCs) goes along with increased IL-12 production
The maturation of dendritic cells (DCs) is crucial for initiating immune responses.
A single intravenous (i.v.) injection of Alfa-galactosylceramide (alfa-GalCer) induced full maturation of splenic DCs within 4 hours in mice. Maturation was evidenced by: Increased expression of costimulatory molecules and MHC class II / HLA class II human, Production of interferon-gamma (IFN-γ), enhanced stimulation of the mixed leukocyte reaction
The changes in DCs were not directly induced by Alfa-galactosylceramide (alfa-GalCer). Natural killer T (NKT) cells were required for this process, acting independently of the MyD88 adaptor protein.
This maturation is responsible for inducing combined Th1 CD4+ and CD8+ T cell immunity to a coadministered protein antigen.
Imidazoquinoline molecules such as imiquimod and resiquimod directly induce pDC maturation as determined by cytokine induction, CCR7 and co-stimulatory marker expression and prolonging viability.
Dendritic Cells (DCs) maturation is characterized by significant change in cell’s antigen expression pattern and functions.
CD40L potently induces dendritic cell (DC) maturation
Phagocytosis of apoptotic/ necrotic tumor cells resulted in maturation of Dendritic Cells (DCs).
Mature DC can induce quiescent T cells to become activated.