Homeobox gene transforming growth factor ß-induced factor-1 (TGIF-1) is a regulator of villous trophoblast differentiation and its expression is increased in human idiopathic fetal growth restriction.
Mol Hum Reprod
; 19(10): 665-75, 2013 Oct.
Article
em En
| MEDLINE
| ID: mdl-23761267
ABSTRACT
Abnormal trophoblast function is associated with human fetal growth restriction (FGR). Targeted disruption of homeobox gene transforming growth ß-induced factor (TGIF-1) results in placental dysfunction in the mouse. The role of human TGIF-1 in placental cell function is unknown. The aims of this study were to determine the expression of TGIF-1 in human idiopathic FGR-affected placentae compared with gestation-matched controls (GMC), to elucidate the functional role of TGIF-1 in trophoblasts and to identify its downstream targets. Real-time PCR and immunoblotting revealed that TGIF-1 mRNA and protein expression was significantly increased in FGR-affected placentae compared with GMC (n = 25 in each group P < 0.05). Immunoreactive TGIF-1 was localized to the villous cytotrophoblasts, syncytiotrophoblast, microvascular endothelial cells and in scattered stromal cells in both FGR and GMC. TGIF-1 inactivation in BeWo cells using two independent siRNA resulted in significantly decreased mRNA and protein of trophoblast differentiation markers, human chorionic gonadotrophin (CGB/hCG), syncytin and 3ß-hydroxysteroid dehydrogenase/3ß-honest significant difference expression. Our data demonstrate that homeobox gene TGIF-1 is a potential up-stream regulator of trophoblast differentiation and the altered TGIF-1 expression may contribute to aberrant villous trophoblast differentiation in FGR.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Proteínas Repressoras
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Trofoblastos
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Proteínas de Homeodomínio
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Retardo do Crescimento Fetal
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Animals
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Female
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Humans
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Pregnancy
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article