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International immunology
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International immunology · Aug 2003
Effect of CXC chemokine platelet factor 4 on differentiation and function of monocyte-derived dendritic cells.
Platelet factor 4 (PF4) is a CXC chemokine secreted by activated platelets. PF4 has been shown to promote monocyte survival and induce the differentiation of monocytes into macrophages. However, the effect of PF4 on differentiation of monocytes into dendritic cells (DC) has yet to be determined. ⋯ CD1a- DC developed in the presence of PF4 were not as active as the control CD1a+ DC in stimulating allogeneic T cells to proliferate. In addition, CD1a- DC were less potent in priming naive CD4+ T cells to secrete both type 1 and 2 cytokines. These results indicate that PF4 can influence differentiation and function of monocyte-derived DC.