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Correlation of Oct4 and FGF4 Gene Expression on Peri-implantation Bovine Embryos Reconstructed with Somatic Cell  

K. S. Chung (Animal Resources Research Center, Konkuk Univ, Seoul)
Yoon, B. S (Animal Resources Research Center, Konkuk University)
S. J. Song (Animal Resources Research Center, Konkuk University)
Park, Y. J. (Animal Resources Research Center, Konkuk University)
S. B. Hong (Animal Resources Research Center, Konkuk University)
Lee, H. T. (Animal Resources Research Center, Konkuk University)
Publication Information
Korean Journal of Animal Reproduction / v.26, no.4, 2002 , pp. 329-338 More about this Journal
Abstract
This study was carried out to investigate the developmental rates of embryo reconstructed with different cell type and to estimate correlation of transcriptional level of octamer-binding transcription factor 4 (Oct4) and fibroblast growth factor 4 (FCF4) gene on peri-implantation stage embryos. Donor cells were transferred into perivitelline space of enucleated oocytes. The karyoplast-cytoplast couplets were accom- plished by cell to cell fusion and activated with ionomycin and 6-dimethylaminopurine. Reconstructed embryos were co-cultured with bovine oviduct epithelial cells in CR 1 aa medium. There is no difference in blastocyst formation rate following nuclear transfer UT) with fetal fibroblast cell (16/50; 32.0%), cumulus cell (16/49; 32.6%) and ear cell (17/52; 32.6%). The expression level of Oct4 and FCF4 in peri-implantation bovine embryo derived from in vitro fertilization (IVF) and NT were determined by reverse-transcription polymerase chain reaction (RT-PCR) technique. In peri-implantation of IVF result in a transient increased of FCF4 paralleled by an increased expression of Oct4. However, Oct4 gene was highly expressed in hatching blastocysts derived from NT compared to IVF. Also, FGF4 expression level in hatching blastocysts and outgrowth stage derived from NT was lower than that of IVF. In conclusion, it is suggested that the different transcription patterns observed in nuclear transfer embryos may lead to a lower rate of embryo development, implantation and pregnancy.
Keywords
Nuclear transfer; Peri-implantation; Oct4; FGF4; RT-PCR;
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