The development of Ag-presenting functions by murine dendritic cells (DCs) of the CD8+ DC lineage was studied using a Flt-3 ligand stimulated bone-marrow culture system. Although newly formed DCs of this lineage are capable of Ag uptake and efficient presentation to T cells on MHC class II, they initially lack the ability to cross-present exogenous Ags on MHC class I. Cross-presentation capacity is acquired as a subsequent maturation step, promoted by cytokines such as GM-CSF. The development of cross-presentation capacity by the DCs in these cultures may be monitored by the parallel development of DC surface expression of CD103. However, the expression of CD103 and cross-presentation capacity are not always linked; therefore, CD103 is not an essential part of the cross-presentation machinery. These results explain the considerable variability in CD103 expression by CD8+ DCs as well as the findings that not all DCs of this lineage are capable of cross-presentation.
CITATION STYLE
Sathe, P., Pooley, J., Vremec, D., Mintern, J., Jin, J.-O., Wu, L., … Shortman, K. (2011). The Acquisition of Antigen Cross-Presentation Function by Newly Formed Dendritic Cells. The Journal of Immunology, 186(9), 5184–5192. https://doi.org/10.4049/jimmunol.1002683
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