Chapter title |
Molecular Methods and Protein Synthesis for Definition of Autoantibody Epitopes.
|
---|---|
Chapter number | 339 |
Book title |
Type-1 Diabetes
|
Published in |
Methods in molecular biology, April 2016
|
DOI | 10.1007/7651_2016_339 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3641-0, 978-1-4939-3643-4
|
Authors |
Karen T. Elvers, Alistair J. K. Williams |
Editors |
Kathleen M. Gillespie |
Abstract |
Epitope mapping is the process of experimentally identifying the binding sites, or "epitopes," of antibodies on their target antigens. Understanding the antibody-epitope interaction provides a basis for the rational design of potential preventative vaccines. Islet autoantibodies are currently the best available biomarkers for predicting future type 1 diabetes. These include autoantibodies to the islet beta cell proteins, insulin and the tyrosine phosphatase islet antigen-2 (IA-2) which selectively bind to a small number of dominant epitopes associated with increased risk of disease progression. The major epitope regions of insulin and IA-2 autoantibodies have been identified, but need to be mapped more precisely. In order to characterize these epitopes more accurately, this article describes the methods of cloning and mutagenesis of insulin and IA-2 and subsequent purification of the proteins that can be tested in displacement analysis and used to monitor immune responses, in vivo, to native and mutated proteins in a humanized mouse model carrying the high-risk HLA class II susceptibility haplotype DRB1*04-DQ8. |
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