CLEC-1 (C-type lectin-like receptor-1) is a type 2 transmembrane protein that belongs to the Dectin-1 family of C-type lectins. CLEC-1 is most highly expressed in activated dendritic cells and at lower levels in endothelial cells and monocytes. Dendritic cells (DCs) represent essential antigen-presenting cells that are critical for linking innate and adaptive immunity, and influencing T-cell responses. Studies have shown that CLEC-1 acts as an inhibitory receptor in dc, which can inhibit activation and downstream effect Th response. As a cell surface receptor, CLEC-1 may be a useful therapeutic target in the clinical regulation of t cell immune responses.
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