Human CD40-ligand: molecular cloning, cellular distribution and regulation of expression by factors controlling IgE production.
FEBS Lett
; 315(3): 259-66, 1993 Jan 11.
Article
em En
| MEDLINE
| ID: mdl-7678552
ABSTRACT
Here we report the cloning of the cDNA for human CD40-Ligand (CD40-L) from a CD4-positive T cell clone. The deduced amino acid sequence predicts a type II membrane protein of 261 amino acids. Northern blot and FACS analysis of PBMNC revealed that the human CD40-L can be detected on T cells and is absent from B cells and monocytes. The human CD40-L is expressed on both CD4- and CD8-positive T cells, (CD45R0+) and (CD45RA+) subsets. We observed that IL-4, an inducer of IgE production, upregulated CD40-L mRNA level while IFN gamma, an inhibitor of IgE synthesis, reduced the expression of CD40-L mRNA. These data suggest a the correlation between human CD40-L expression and IgE production.
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Base de dados:
MEDLINE
Assunto principal:
Imunoglobulina E
/
Glicoproteínas de Membrana
/
Antígenos de Diferenciação de Linfócitos B
/
Antígenos CD
/
Regulação da Expressão Gênica
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Suíça