PMID- 20304916 OWN - NLM STAT- MEDLINE DCOM- 20100721 LR - 20220224 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 285 IP - 25 DP - 2010 Jun 18 TI - Distribution and function of macrophage galactose-type C-type lectin 2 (MGL2/CD301b): efficient uptake and presentation of glycosylated antigens by dendritic cells. PG - 19193-204 LID - 10.1074/jbc.M110.113613 [doi] AB - Dendritic cells (DCs) express cell surface lectins that are potentially involved in the recognition, uptake, and presentation of glycosylated foreign substances. A unique calcium-type (C-type) lectin, the macrophage galactose (Gal)-type C-type lectin (MGL/CD301) expressed on DCs, is thought to participate in the recognition of molecules from both altered self and pathogens due to its monosaccharide specificity for Gal and N-acetylgalactosamine (GalNAc). Although mice have two MGL genes, Mgl1 and Mgl2, their distinct roles have not been previously explored. The present report characterizes the properties of MGL2 by examining its distribution and its role in antigen presentation by DCs. We generated an MGL2-specific monoclonal antibody and examined MGL2 expression in tissues by immunohistochemistry and in isolated cells by flow cytometry. The cells reactive with this antibody were shown to be a portion of MGL1-expressing cells, mostly conventional DCs. Internalization of soluble polyacrylamide polymers (PAA) with alpha-GalNAc residues (GalNAc-PAA) by bone marrow-derived DCs (BM-DCs) was mediated by MGL2, as revealed by a comparison of Mgl1(-/-) and Mgl2(-/-) BM-DCs with wild-type BM-DCs. Biotinylated GalNAc-PAA conjugated to streptavidin (SAv) was more efficiently presented to SAv-primed T cells by BM-DCs than beta-N-acetylglucosamine-PAA conjugated to SAv or SAv alone as shown by thymidine uptake and cytokine production. This is the first report that demonstrates the involvement of GalNAc residues in antigen uptake and presentation by DCs that lead to CD4(+) T cell activation. FAU - Denda-Nagai, Kaori AU - Denda-Nagai K AD - Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan. FAU - Aida, Satoshi AU - Aida S FAU - Saba, Kengo AU - Saba K FAU - Suzuki, Kiwamu AU - Suzuki K FAU - Moriyama, Saya AU - Moriyama S FAU - Oo-Puthinan, Sarawut AU - Oo-Puthinan S FAU - Tsuiji, Makoto AU - Tsuiji M FAU - Morikawa, Akiko AU - Morikawa A FAU - Kumamoto, Yosuke AU - Kumamoto Y FAU - Sugiura, Daisuke AU - Sugiura D FAU - Kudo, Akihiko AU - Kudo A FAU - Akimoto, Yoshihiro AU - Akimoto Y FAU - Kawakami, Hayato AU - Kawakami H FAU - Bovin, Nicolai V AU - Bovin NV FAU - Irimura, Tatsuro AU - Irimura T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100319 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Antigens) RN - 0 (Lectins, C-Type) RN - 0 (MGL2 protein, mouse) SB - IM MH - Animals MH - Antigens/chemistry MH - Bone Marrow Cells/cytology MH - CHO Cells MH - Cricetinae MH - Cricetulus MH - Dendritic Cells/*cytology MH - Female MH - Flow Cytometry/methods MH - Glycosylation MH - Immunohistochemistry/methods MH - Lectins, C-Type/*metabolism MH - Lymphocyte Activation MH - Mice MH - Mice, Inbred C57BL MH - T-Lymphocytes/metabolism MH - Tissue Distribution PMC - PMC2885198 EDAT- 2010/03/23 06:00 MHDA- 2010/07/22 06:00 PMCR- 2011/06/18 CRDT- 2010/03/23 06:00 PHST- 2010/03/23 06:00 [entrez] PHST- 2010/03/23 06:00 [pubmed] PHST- 2010/07/22 06:00 [medline] PHST- 2011/06/18 00:00 [pmc-release] AID - S0021-9258(20)58051-4 [pii] AID - M110.113613 [pii] AID - 10.1074/jbc.M110.113613 [doi] PST - ppublish SO - J Biol Chem. 2010 Jun 18;285(25):19193-204. doi: 10.1074/jbc.M110.113613. Epub 2010 Mar 19.