First Author | Kerrigan AM | Year | 2009 |
Journal | J Immunol | Volume | 182 |
Issue | 7 | Pages | 4150-7 |
PubMed ID | 19299712 | Mgi Jnum | J:147127 |
Mgi Id | MGI:3839475 | Doi | 10.4049/jimmunol.0802808 |
Citation | Kerrigan AM, et al. (2009) CLEC-2 is a phagocytic activation receptor expressed on murine peripheral blood neutrophils. J Immunol 182(7):4150-7 |
abstractText | CLEC-2 is a member of the 'dectin-1 cluster' of C-type lectin-like receptors and was originally thought to be restricted to platelets. In this study, we demonstrate that murine CLEC-2 is also expressed by peripheral blood neutrophils, but only weakly by bone marrow or elicited inflammatory neutrophils. On circulating neutrophils, CLEC-2 can mediate phagocytosis of Ab-coated beads and the production of proinflammatory cytokines, including TNF-alpha, in response to the CLEC-2 ligand, rhodocytin. CLEC-2 possesses a tyrosine-based cytoplasmic motif similar to that of dectin-1, and we show using chimeric analyses that the activities of this receptor are dependent on this tyrosine. Like dectin-1, CLEC-2 can recruit the signaling kinase Syk in myeloid cells, however, stimulation of this pathway does not induce the respiratory burst. These data therefore demonstrate that CLEC-2 expression is not restricted to platelets and that it functions as an activation receptor on neutrophils. |