Journal
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
Volume 111, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dci.2020.103767
Keywords
CLEC12B; C-type lectin; Macrophages; Dendritic cell; Monoclonal antibody; Pig
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Funding
- Ministry of Economy, Industry and Competitiveness of Spain [AGL2015-66187-P]
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CLEC12B is a C-type lectin-like receptor expressed on myeloid cells. In this study, we have characterized the porcine homologue of CLEC12B (poCLEC12B). To this end, we have generated constructs encoding a c-myc tagged version of the whole receptor, or its ectodomain fused to the Fc portion of human IgG1, from a cDNA clone obtained from an alveolar macrophage library, and raised monoclonal antibodies (mAb) against this molecule. Using these mAbs, poCLEC12B was found to be expressed on alveolar macrophages and, at lower levels, on blood conventional type 1 dendritic cells (cDC1) and plasmacytoid DCs. No binding was detected on monocytes, monocyte-derived macrophages or monocyte-derived DCs. Engagement of CLEC12B on alveolar macrophages with mAbs had no apparent effect on cytokine production (TNF-alpha, IL-8) induced by LPS. These results provide the basis for future investigations aimed to assess the role of poCLEC12B in different microbial infections and to evaluate its potential in vaccination strategies targeting DCs.
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