First Author | Lowe KL | Year | 2015 |
Journal | Eur J Immunol | Volume | 45 |
Issue | 9 | Pages | 2484-93 |
PubMed ID | 26173808 | Mgi Jnum | J:233046 |
Mgi Id | MGI:5780644 | Doi | 10.1002/eji.201445314 |
Citation | Lowe KL, et al. (2015) The expression of mouse CLEC-2 on leucocyte subsets varies according to their anatomical location and inflammatory state. Eur J Immunol 45(9):2484-93 |
abstractText | Expression of mouse C-type lectin-like receptor 2 (CLEC-2) has been reported on circulating CD11b(high) Gr-1(high) myeloid cells and dendritic cells (DCs) under basal conditions, as well as on a variety of leucocyte subsets following inflammatory stimuli or in vitro cell culture. However, previous studies assessing CLEC-2 expression failed to use CLEC-2-deficient mice as negative controls and instead relied heavily on single antibody clones. Here, we generated CLEC-2-deficient adult mice using two independent approaches and employed two anti-mouse CLEC-2 antibody clones to investigate surface expression on hematopoietic cells from peripheral blood and secondary lymphoid organs. We rule out constitutive CLEC-2 expression on resting DCs and show that CLEC-2 is upregulated in response to LPS-induced systemic inflammation in a small subset of activated DCs isolated from the mesenteric lymph nodes but not the spleen. Moreover, we demonstrate for the first time that peripheral blood B lymphocytes present exogenously derived CLEC-2 and suggest that both circulating B lymphocytes and CD11b(high) Gr-1(high) myeloid cells lose CLEC-2 following entry into secondary lymphoid organs. These results have significant implications for our understanding of CLEC-2 physiological functions. |