IGF binding protein 1 is correlated with hypoxia-induced growth reduce and developmental defects in grass carp (Ctenopharyngodon idellus) embryos.
Gen Comp Endocrinol
; 172(3): 409-15, 2011 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-21501614
ABSTRACT
The effects of hypoxia on embryonic development and the underlying cellular and molecular mechanisms are poorly understood in teleost fish, although the hypoxic effects on embryonic growth and development have been reported in the zebrafish model. Here, we found that hypoxia caused significant developmental delay and growth retardation during grass carp embryogenesis. Placing the embryos in hypoxic conditions at different developmental stages strongly induced the mRNA expression of insulin-like growth factor-binding protein 1 (IGFBP1), an inhibitory protein that binds to IGF and inhibits its subsequent actions in vivo. Further gain-of-function analysis results provided strong evidence to support the hypothesis that IGFBP1 plays an important role in mediating hypoxic-induced growth and developmental defects. Overexpression of IGFBP1 mRNA reduced the growth rate to a degree that was similar to hypoxia. Additionally, overexpression of IGFBP1 caused significant developmental defects in the formation of midline, somite and hindbrain structures during grass carp embryogenesis. Taken together, our studies suggest that IGFBP1 plays a key role in mediating these hypoxia-induced embryonic growth retardation and developmental delay in grass carp.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Carpas
/
Hipoxia de la Célula
/
Proteína 1 de Unión a Factor de Crecimiento Similar a la Insulina
/
Proteínas de Peces
/
Desarrollo Embrionario
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Gen Comp Endocrinol
Año:
2011
Tipo del documento:
Article
País de afiliación:
China