tetano
Editor, Senior Moderator
Mol Immunol. 2013 Jul 31;56(4):452-462. doi: 10.1016/j.molimm.2013.06.007. [Epub ahead of print]
Glycans from avian influenza virus are recognized by chicken dendritic cells and are targets for the humoral immune response in chicken.
de Geus ED, Tefsen B, van Haarlem DA, van Eden W, van Die I, Vervelde L.
Source
Department Infectious Diseases & Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands. Electronic address: E.D.deGeus@uu.nl.
Abstract
To increase our understanding of the interaction between avian influenza virus and its chicken host, we identified receptors for putative avian influenza virus (AIV) glycan determinants on chicken dendritic cells. Chicken dendritic cells (DCs) were found to recognize glycan determinants containing terminal αGalNAc, Galα1-3Gal, GlcNAcβ1-4GlcNAcβ1-4GlcNAcβ (chitotriose) and Galα1-2Gal. Infection of chicken dendritic cells with either low pathogenic (LP) or highly pathogenic (HP) AIV results in elevated mRNA expression of homologs of the mouse C-type lectins DEC205 and macrophage mannose receptor (MMR), whereas expression levels of the human dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin (DC-SIGN) homolog remained unchanged. Following uptake and subsequent presentation of avian influenza virus by DCs, adaptive immunity, including humoral immune responses are induced. We have investigated the antibody responses against virus glycan epitopes after avian influenza virus infection. Using glycan micro-array analysis we showed that chicken contained antibodies that predominantly recognize terminal Galα1-3Gal-R, chitotriose and Fucα1-2Galβ1-4GlcNAc-R (H-type 2). After influenza-infection, glycan array analysis showed that both levels and repertoire of glycan-recognizing antibodies decreased. However, analysis of the sera by ELISA indicated that the levels of different isotypes of anti-glycan Abs against specific glycan antigens was increased after influenza-infection, suggesting that the presentation of the glycan antigens and iso-type of the Abs are critical parameters to take into account when measuring anti-glycan Abs. This novel approach in avian influenza research may contribute to the development of a broad spectrum vaccine and improves our mechanistic understanding of innate and adaptive responses to glycans.
Copyright ? 2013 Elsevier Ltd. All rights reserved.
KEYWORDS:
(BM)-DC, (bone marrow-derived) dendritic cell, AIV, Ab, Avian influenza virus, BPL, C-type lectin, CLR, DC-SIGN, Dendritic cells, Glycan-recognizing antibodies, HA, HP, HRP, Ig, LP, Lectins, MGL-1, MMR, N-glycosylation sites, NA, NGS, PAA, SA, antibody, avian influenza virus, beta-propiolactone, dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin, haemagglutinin, highly pathogenic, horseradish peroxidase, immunoglobulin, low pathogenic, macrophage galactose-type lectin 1, macrophage mannose receptor, neuraminidase, polyacrylamide, sialic acid
PMID:
23911401
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23911401
Glycans from avian influenza virus are recognized by chicken dendritic cells and are targets for the humoral immune response in chicken.
de Geus ED, Tefsen B, van Haarlem DA, van Eden W, van Die I, Vervelde L.
Source
Department Infectious Diseases & Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands. Electronic address: E.D.deGeus@uu.nl.
Abstract
To increase our understanding of the interaction between avian influenza virus and its chicken host, we identified receptors for putative avian influenza virus (AIV) glycan determinants on chicken dendritic cells. Chicken dendritic cells (DCs) were found to recognize glycan determinants containing terminal αGalNAc, Galα1-3Gal, GlcNAcβ1-4GlcNAcβ1-4GlcNAcβ (chitotriose) and Galα1-2Gal. Infection of chicken dendritic cells with either low pathogenic (LP) or highly pathogenic (HP) AIV results in elevated mRNA expression of homologs of the mouse C-type lectins DEC205 and macrophage mannose receptor (MMR), whereas expression levels of the human dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin (DC-SIGN) homolog remained unchanged. Following uptake and subsequent presentation of avian influenza virus by DCs, adaptive immunity, including humoral immune responses are induced. We have investigated the antibody responses against virus glycan epitopes after avian influenza virus infection. Using glycan micro-array analysis we showed that chicken contained antibodies that predominantly recognize terminal Galα1-3Gal-R, chitotriose and Fucα1-2Galβ1-4GlcNAc-R (H-type 2). After influenza-infection, glycan array analysis showed that both levels and repertoire of glycan-recognizing antibodies decreased. However, analysis of the sera by ELISA indicated that the levels of different isotypes of anti-glycan Abs against specific glycan antigens was increased after influenza-infection, suggesting that the presentation of the glycan antigens and iso-type of the Abs are critical parameters to take into account when measuring anti-glycan Abs. This novel approach in avian influenza research may contribute to the development of a broad spectrum vaccine and improves our mechanistic understanding of innate and adaptive responses to glycans.
Copyright ? 2013 Elsevier Ltd. All rights reserved.
KEYWORDS:
(BM)-DC, (bone marrow-derived) dendritic cell, AIV, Ab, Avian influenza virus, BPL, C-type lectin, CLR, DC-SIGN, Dendritic cells, Glycan-recognizing antibodies, HA, HP, HRP, Ig, LP, Lectins, MGL-1, MMR, N-glycosylation sites, NA, NGS, PAA, SA, antibody, avian influenza virus, beta-propiolactone, dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin, haemagglutinin, highly pathogenic, horseradish peroxidase, immunoglobulin, low pathogenic, macrophage galactose-type lectin 1, macrophage mannose receptor, neuraminidase, polyacrylamide, sialic acid
PMID:
23911401
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23911401