Abstract
Molecular mimicry between streptococcal and human proteins has been proposed as the triggering factor leading to autoimmunity in rheumatic fever (RF) and rheumatic heart disease (RHD). In this review we focus on the studies on genetic susceptibility markers involved in the development of RF/RHD and molecular mimicry mediated by T cell responses of RHD patients against streptococcal antigens and human tissue proteins. We identified several M protein epitopes recognized by peripheral T cells of RF/RHD patients and by heart tissue infiltrating T cell clones of severe RHD patients. The regions of the M protein preferentially recognized by human T cells were also recognized by murine T cells. By analyzing the T cell receptor (TCR) we observed that some Vβ families detected on the periphery were oligoclonal expanded in the heart lesions. These results allowed us to confirm the major role of T cells in the development of RHD lesions.
Keywords: Rheumatic fever, rheumatic heart disease, Streptococcus pyogenes, T cell response, autoimmunity, molecular mimicry, M protein, heart proteins
Current Protein & Peptide Science
Title: T Cell Response in Rheumatic Fever: Crossreactivity Between Streptococcal M Protein Peptides and Heart Tissue Proteins
Volume: 8 Issue: 1
Author(s): Luiza Guilherme, Kellen C. Fae, Sandra E. Oshiro, Ana C. Tanaka, Pablo M. A. Pomerantzeff and Jorge Kalil
Affiliation:
Keywords: Rheumatic fever, rheumatic heart disease, Streptococcus pyogenes, T cell response, autoimmunity, molecular mimicry, M protein, heart proteins
Abstract: Molecular mimicry between streptococcal and human proteins has been proposed as the triggering factor leading to autoimmunity in rheumatic fever (RF) and rheumatic heart disease (RHD). In this review we focus on the studies on genetic susceptibility markers involved in the development of RF/RHD and molecular mimicry mediated by T cell responses of RHD patients against streptococcal antigens and human tissue proteins. We identified several M protein epitopes recognized by peripheral T cells of RF/RHD patients and by heart tissue infiltrating T cell clones of severe RHD patients. The regions of the M protein preferentially recognized by human T cells were also recognized by murine T cells. By analyzing the T cell receptor (TCR) we observed that some Vβ families detected on the periphery were oligoclonal expanded in the heart lesions. These results allowed us to confirm the major role of T cells in the development of RHD lesions.
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Cite this article as:
Guilherme Luiza, Fae C. Kellen, Oshiro E. Sandra, Tanaka C. Ana, A. Pomerantzeff M. Pablo and Kalil Jorge, T Cell Response in Rheumatic Fever: Crossreactivity Between Streptococcal M Protein Peptides and Heart Tissue Proteins, Current Protein & Peptide Science 2007; 8 (1) . https://dx.doi.org/10.2174/138920307779941488
DOI https://dx.doi.org/10.2174/138920307779941488 |
Print ISSN 1389-2037 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5550 |
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