Effect of pregnancy-specific beta 1-glycoprotein on the development of preimplantation embryo.
Proc Soc Exp Biol Med
; 220(3): 169-77, 1999 Mar.
Article
em En
| MEDLINE
| ID: mdl-10193445
ABSTRACT
The objective of this study is to test the hypothesis that members of the pregnancy-specific beta 1-glycoprotein (PSG) family enhance the growth and maturation of embryos. cDNA encoding two members of the PSG family, namely PSG1 and PSG3, were expressed in Chinese Hamster Ovary (CHO) cells with the expression vector pH beta APr-1-neo. Two-cell stage mouse embryos were co-cultured in a two-chamber system with CHO cells expressing either recombinant PSG1 (rPSG1) or PSG3 (rPSG3) in the presence and absence of neutralizing PSG antibodies. The cleavage and maturation stage of the embryos was assessed at 12-hr intervals. Mouse embryos co-cultured with transfectants expressing rPSG1 showed a significant enhancement of cleavage and maturation rate compared to controls with P < 0.005-0.004. In co-cultures with CHO cells expressing rPSG3, no significant difference from the controls was observed in the early stage of development until late blastocyst formation. At that stage, there was a statistically significant enhancement of development by rPSG3 when compared to controls with P < 0.001. These results suggest that PSG1 and PSG3 exhibit embryotropic activity at different stages of development in the mouse model.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Glicoproteínas beta 1 Específicas da Gravidez
/
Desenvolvimento Embrionário e Fetal
Limite:
Animals
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Proc Soc Exp Biol Med
Ano de publicação:
1999
Tipo de documento:
Article
País de afiliação:
Estados Unidos