منابع مشابه
Clustered O-glycans of IgA1: defining macro- and microheterogeneity by use of electron capture/transfer dissociation.
IgA nephropathy (IgAN) is the most common primary glomerulonephritis in the world. Aberrantly glycosylated IgA1, with galactose (Gal)-deficient hinge region (HR) O-glycans, plays a pivotal role in the pathogenesis of the disease. It is not known whether the glycosylation defect occurs randomly or preferentially at specific sites. We have described the utility of activated ion-electron capture d...
متن کاملCorrection: Enzymatic Sialylation of IgA1 O-Glycans: Implications for Studies of IgA Nephropathy
Patients with IgA nephropathy (IgAN) have elevated circulating levels of IgA1 with some O-glycans consisting of galactose (Gal)-deficient N-acetylgalactosamine (GalNAc) with or without N-acetylneuraminic acid (NeuAc). We have analyzed O-glycosylation heterogeneity of naturally asialo-IgA1 (Ale) myeloma protein that mimics Gal-deficient IgA1 (Gd-IgA1) of patients with IgAN, except that IgA1 O-gl...
متن کاملGlyco-engineering for the production of recombinant IgA1 with distinct mucin-type O-glycans in plants
IgA nephropathy (IgAN) is a common autoimmune disease that is characterized by formation and deposition of IgA1-containing immune complexes frequently leading to end-stage kidney disease. The IgA1 in these immune complexes carries aberrantly glycosylated O-glycans. In circulating IgA1 these galactose-deficient mucin-type O-glycans are bound by autoantibodies and thus, contribute to immune compl...
متن کاملAnalysis of IgA1 O-glycans in IgA nephropathy by fluorophore-assisted carbohydrate electrophoresis.
Abnormal O-glycosylation of IgA1 may contribute to pathogenic mechanisms in IgA nephropathy (IgAN). Observations of altered lectin binding to IgA1 in IgAN suggest that the O-glycan chains may be undergalactosylated, but precise structural definition of the defect has proved technically difficult, and it remains unconfirmed. This is the first study using fluorophore-assisted carbohydrate electro...
متن کاملTransient Glyco-Engineering to Produce Recombinant IgA1 with Defined N- and O-Glycans in Plants
The production of therapeutic antibodies to combat pathogens and treat diseases, such as cancer is of great interest for the biotechnology industry. The recent development of plant-based expression systems has demonstrated that plants are well-suited for the production of recombinant monoclonal antibodies with defined glycosylation. Compared to immunoglobulin G (IgG), less effort has been under...
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ژورنال
عنوان ژورنال: Molecular & Cellular Proteomics
سال: 2010
ISSN: 1535-9476
DOI: 10.1074/mcp.m110.001834