B cells require "nurturing" by CD4 T cells during development in order to respond in chronic graft-versus-host model of systemic lupus erythematosus.
Clin Immunol
; 136(1): 105-15, 2010 Jul.
Article
em En
| MEDLINE
| ID: mdl-20381429
ABSTRACT
The murine chronic GVH (cGVH) model of SLE is induced by allo-recognition of foreign major histocompatibility complex (MHC) class II determinants. Previous studies have shown that syngeneic CD4(+) T cells are needed during B cell development in order to induce cGVH response in CD4KO mice. Our present studies show that B cells require "nurturing" by CD4 T cells through much of their ontogeny in order to respond to allo-signaling and become autoreactive. The nurturing process does not require antigen-specific cognate interactions between CD4 T cells and B cells. It is mediated by IL-4, but not IL-10, IL-6 and IFN-gamma. The CD4 T cell nurturing may be supplanted by large doses of IL-4 and/or by agonistic anti-CD40 mAb. Understanding the mechanism of this "nurturing" process may yield clues to the role of CD4 T cells in lupus and in host defense in general.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Linfócitos B
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Linfócitos T CD4-Positivos
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Diferenciação Celular
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Doença Enxerto-Hospedeiro
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Lúpus Eritematoso Sistêmico
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article