CLEC10A binds Tn-MUC1

Stable Identifier
R-HSA-8858500
Type
Reaction [binding]
Species
Homo sapiens
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Glycoproteins in human tumors often exhibit abnormal glycosylation patters, e.g. certain Lewis structures, TF antigen, Tn antigen and/or their sialylated forms, which creates additional binding sites for glycoreceptors. The C-type lectin domain family 10 member A (CLEC10A/MGL/CD301) is a calcium-type (C-type) lectin glycoreceptor expressed on dendritic cells (DCs) (Suzuki et al. 1996). It recognizes glycoproteins from both altered self and pathogens due to its monosaccharide specificity for galactose (Gal) and N-acetylgalactosamine (GalNAc). CLEC10A specifically binds glycans with terminal GalNAc residues such as Tn antigen (GalNAcalpha-serine/threonine), 6-sulfo-Tn, Lac-di-NAc (Galbeta1,4-GlcNAc) as well as core 5 (GalNAcalpha1-3GalNAcalpha-) and core 6 (GlcNAcbeta1-6GalNAcalpha-) that are expressed in human tumors (Mortezai et al. 2013, van Vliet et al. 2005). CLEC10A on immature human monocyte-derived DCs has been shown to recognize and internalize the three tandem repeat peptides of Mucin-1 carrying Tn (Tn-MUC1) (Denda-Nagai et al. 2010).

Literature References
PubMed ID Title Journal Year
23507963 Tumor-associated Neu5Ac-Tn and Neu5Gc-Tn antigens bind to C-type lectin CLEC10A (CD301, MGL)

Mortezai, N, Behnken, HN, Kurze, AK, Ludewig, P, Buck, F, Meyer, B, Wagener, C

Glycobiology 2013
8598452 Molecular cloning and expression of cDNA encoding human macrophage C-type lectin. Its unique carbohydrate binding specificity for Tn antigen

Suzuki, N, Yamamoto, K, Toyoshima, S, Osawa, T, Irimura, T

J. Immunol. 1996
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