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- W2068275714 abstract "Pemphigus vulgaris (PV) is a severe autoimmune blistering disease associated with autoantibodies to desmoglein 3 (Dsg 3), a transmembrane glycoprotein of the cadherin family. Previous studies mainly focused on the mapping of conformational epitopes of Dsg 3 using recombinant fragments of Dsg 3 and competition ELISA.Here, we performed a mapping of linear B cell epitopes on Dsg 3 in PV patients by the use of overlapping synthetic peptides.A set of 254 overlapping synthetic peptides of 14 amino acids length covering the entire Dsg 3 extracellular domain was generated. Sera of patients with active PV (n=10) and healthy volunteers (n=10) were tested for IgG reactivity with the 254 peptides by ELISA. Testing each peptide separately, 7 major antigenic sites were identified. In order to validate these reactivities, 7 corresponding peptides of 13-33 amino acids in length were generated and employed by ELISA. Additional sera of active PV patients (n=17) and healthy volunteers (n=20) were tested and the most reactive peptide was used to specifically purify anti-Dsg 3 antibodies from PV sera (n=3).The major autoantibody reactivity in PV sera was mapped to amino acids 333-356 within the EC3 domain. Purifying patients IgG using the identified peptide, however, failed to induce acantholysis in keratinocyte dissociation assay.We conclude that linear epitopes do not play a major pathogenic role in human PV." @default.
- W2068275714 created "2016-06-24" @default.
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- W2068275714 date "2012-02-01" @default.
- W2068275714 modified "2023-09-27" @default.
- W2068275714 title "Mapping of B cell epitopes on desmoglein 3 in pemphigus vulgaris patients by the use of overlapping peptides" @default.
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- W2068275714 doi "https://doi.org/10.1016/j.jdermsci.2011.11.012" @default.
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