Macrophage C-type lectin on bone marrow-derived immature dendritic cells is involved in the internalization of glycosylated antigens

被引：51

作者：

Denda-Nagai, K ^{[1
]}

Kubota, N ^{[1
]}

Tsuiji, M ^{[1
]}

Kamata, M ^{[1
]}

Irimura, T ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Pharmaceut Sci, Lab Canc Biol & Mol Immunol, Bunkyo Ku, Tokyo 1130033, Japan

来源：

GLYCOBIOLOGY | 2002年 / 12卷 / 07期

关键词：

antigen uptake; C-type lectin; dendritic cells; glycosylated antigen;

D O I：

10.1093/glycob/cwf061

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Bone marrow-derived dendritic cells (DCs) were examined for the expression of the murine macrophage C-type lectin specific for galactose and N-acetylgalactosamine (mMGL). Flow cytometric analysis after double staining for MHC class II and mMGL with specific monoclonal antibodies indicated that mMGL was expressed on immature DCs with low to moderate levels of MHC class II and down-regulated during maturation. Immature DCs bound and internalized alpha-N-acetylgalactosaminides conjugated to soluble polyacrylamide (alpha-GalNAc polymers), whereas mature DCs and bone marrow cells did not. The two-color flow cytometric profiles indicated that the degree of alpha-GalNAc polymer bindings exactly coincided with the intensity of the binding of a mMGL-specific monoclonal antibody LOM-14. The internalized alpha-GalNAc polymers seemed to be transported to MHC class II compartments. Thus, mMGL is transiently expressed on bone marrow-derived DCs during their development and maturation and suggested to be involved in the uptake of glycosylated antigens for presentation.

引用

页码：443 / 450

页数：8

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