Homeodomain protein IDX-1: a master regulator of pancreas development and insulin gene expression.
Trends Endocrinol Metab
; 8(4): 145-51, 1997.
Article
em En
| MEDLINE
| ID: mdl-18406800
ABSTRACT
The homeodomain protein IDX-1 appears to be a "master regulator" of pancreas development and beta-cell differentiation and function. In murine gene inactivation models and in a human subject with a homozygous mutation of the IDX-1 gene, the pancreas fails to develop. In the adult endocrine pancreas, IDX-1 is primarily expressed in beta cells, where it is a key factor in the upregulation of insulin gene transcription and appears to have a role in the regulation of the somatostatin, glucokinase, glucose transporter-2, and islet amyloid polypeptide genes. Recent studies also suggest a role for IDX-1 in the neogenesis and proliferation of beta cells. The observed functions of IDX-1 and its downregulation in parallel with insulin in glucose-toxicity models implicate IDX-1 as a potential factor contributing to the pathogenesis of diabetes mellitus. Future directions include the use of conditional gene inactivation to determine more precisely the role of IDX-1 throughout endocrine pancreas differentiation and the exploration of IDX-1 as a potential target for gene therapy of diabetes mellitus.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Trends Endocrinol Metab
Assunto da revista:
ENDOCRINOLOGIA
/
METABOLISMO
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Estados Unidos