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Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression
Earlier studies showed that the DNA-binding protein, Bright/ARID3a bound to a subset of human and mouse immunoglobulin heavy chain promoters where it enhanced expression. Indeed, mice with transgenic expression of ARID3a in all B lymphocytes have expanded MZ B cells and produce anti-nuclear antibodi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5451160/ https://www.ncbi.nlm.nih.gov/pubmed/28580178 http://dx.doi.org/10.3390/antib4040354 |
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author | Ward, Julie M. James, Judith A. Zhao, Yan D. Webb, Carol F. |
author_facet | Ward, Julie M. James, Judith A. Zhao, Yan D. Webb, Carol F. |
author_sort | Ward, Julie M. |
collection | PubMed |
description | Earlier studies showed that the DNA-binding protein, Bright/ARID3a bound to a subset of human and mouse immunoglobulin heavy chain promoters where it enhanced expression. Indeed, mice with transgenic expression of ARID3a in all B lymphocytes have expanded MZ B cells and produce anti-nuclear antibodies (ANAs). Consistent with our findings in mice, we observed that human systemic lupus erythematosus (SLE) patients had expanded numbers of peripheral blood ARID3a(+) B cells that were associated with increased disease activity (p = 0.0038). We hypothesized that ARID3a(+) naïve B cells would eventually produce autoantibodies, explaining associations between ARID3a expression and disease activity in lupus. Unlike healthy controls, ARID3a was expressed in the naïve B cell population in SLE patients, and we hypothesized that these might represent expansions of autoreactive cells. Therefore, monoclonal antibodies were generated from single-sorted naïve B cells derived from patients with normal (ARID3a(N)) and high (ARID3a(H)) numbers of ARID3a(+) B cells. We found that ARID3a expression did not correlate with autoantibody expression. Furthermore, measures of antigen specificities of autoreactive antibodies did not reveal skewing toward particular proteins. These data suggest that the association of increased disease activity in SLE with numbers of ARID3a(+) B lymphocytes may be mediated by an antibody-independent mechanism. |
format | Online Article Text |
id | pubmed-5451160 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
record_format | MEDLINE/PubMed |
spelling | pubmed-54511602017-05-31 Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression Ward, Julie M. James, Judith A. Zhao, Yan D. Webb, Carol F. Antibodies (Basel) Article Earlier studies showed that the DNA-binding protein, Bright/ARID3a bound to a subset of human and mouse immunoglobulin heavy chain promoters where it enhanced expression. Indeed, mice with transgenic expression of ARID3a in all B lymphocytes have expanded MZ B cells and produce anti-nuclear antibodies (ANAs). Consistent with our findings in mice, we observed that human systemic lupus erythematosus (SLE) patients had expanded numbers of peripheral blood ARID3a(+) B cells that were associated with increased disease activity (p = 0.0038). We hypothesized that ARID3a(+) naïve B cells would eventually produce autoantibodies, explaining associations between ARID3a expression and disease activity in lupus. Unlike healthy controls, ARID3a was expressed in the naïve B cell population in SLE patients, and we hypothesized that these might represent expansions of autoreactive cells. Therefore, monoclonal antibodies were generated from single-sorted naïve B cells derived from patients with normal (ARID3a(N)) and high (ARID3a(H)) numbers of ARID3a(+) B cells. We found that ARID3a expression did not correlate with autoantibody expression. Furthermore, measures of antigen specificities of autoreactive antibodies did not reveal skewing toward particular proteins. These data suggest that the association of increased disease activity in SLE with numbers of ARID3a(+) B lymphocytes may be mediated by an antibody-independent mechanism. 2015-11-17 2015-12 /pmc/articles/PMC5451160/ /pubmed/28580178 http://dx.doi.org/10.3390/antib4040354 Text en http://creativecommons.org/licenses/by/4.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ward, Julie M. James, Judith A. Zhao, Yan D. Webb, Carol F. Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title | Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title_full | Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title_fullStr | Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title_full_unstemmed | Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title_short | Antibody Reactivity of B Cells in Lupus Patients with Increased Disease Activity and ARID3a Expression |
title_sort | antibody reactivity of b cells in lupus patients with increased disease activity and arid3a expression |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5451160/ https://www.ncbi.nlm.nih.gov/pubmed/28580178 http://dx.doi.org/10.3390/antib4040354 |
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