Cargando…
The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion
In mature B cells, signals transduced through membrane immunoglobulin (Ig) produce cellular activation, yet the same receptor can also mediate deletion and silencing of autoreactive B cells. In addition, Ig expression during the antigen-independent phase of B cell development regulates the precursor...
Formato: | Texto |
---|---|
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1995
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2192193/ https://www.ncbi.nlm.nih.gov/pubmed/7595209 |
_version_ | 1782147182570242048 |
---|---|
collection | PubMed |
description | In mature B cells, signals transduced through membrane immunoglobulin (Ig) produce cellular activation, yet the same receptor can also mediate deletion and silencing of autoreactive B cells. In addition, Ig expression during the antigen-independent phase of B cell development regulates the precursor B (pre-B) cell transition and allelic exclusion. To account for the diverse regulatory functions induced by membrane Ig, it has been proposed that individual receptor components have independent physiologic activities. Here we establish a role for Ig alpha in the pre-B cell transition and allelic exclusion. We find that the cytoplasmic domain of Ig alpha contains sufficient information to trigger both of these antigen-independent events. Direct comparisons of the cytoplasmic domains of Ig alpha and Ig beta show that the two are indistinguishable in the induction of the pre-B cell transition and allelic exclusion. Our experiments suggest that, despite the reported differences in certain biochemical assays, Ig alpha and Ig beta have redundant functions in the developing B cell. |
format | Text |
id | pubmed-2192193 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1995 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21921932008-04-16 The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion J Exp Med Articles In mature B cells, signals transduced through membrane immunoglobulin (Ig) produce cellular activation, yet the same receptor can also mediate deletion and silencing of autoreactive B cells. In addition, Ig expression during the antigen-independent phase of B cell development regulates the precursor B (pre-B) cell transition and allelic exclusion. To account for the diverse regulatory functions induced by membrane Ig, it has been proposed that individual receptor components have independent physiologic activities. Here we establish a role for Ig alpha in the pre-B cell transition and allelic exclusion. We find that the cytoplasmic domain of Ig alpha contains sufficient information to trigger both of these antigen-independent events. Direct comparisons of the cytoplasmic domains of Ig alpha and Ig beta show that the two are indistinguishable in the induction of the pre-B cell transition and allelic exclusion. Our experiments suggest that, despite the reported differences in certain biochemical assays, Ig alpha and Ig beta have redundant functions in the developing B cell. The Rockefeller University Press 1995-11-01 /pmc/articles/PMC2192193/ /pubmed/7595209 Text en This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Articles The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title | The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title_full | The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title_fullStr | The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title_full_unstemmed | The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title_short | The cytoplasmic domains of immunoglobulin (Ig) alpha and Ig beta can independently induce the precursor B cell transition and allelic exclusion |
title_sort | cytoplasmic domains of immunoglobulin (ig) alpha and ig beta can independently induce the precursor b cell transition and allelic exclusion |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2192193/ https://www.ncbi.nlm.nih.gov/pubmed/7595209 |