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Cloning and Stem Cells
Analysis of mRNA Transcripts for Insulin-Like Growth Factor Receptors and Binding Proteins in Bovine Embryos Derived from Somatic Cell Nuclear Transfer
To cite this article:
Ken Sawai, Soichi Kageyama, Satoru Moriyasu, Hiroki Hirayama, Akira Minamihashi, Sadao Onoe.
Cloning and Stem Cells.
Fall 2005,
7(3): 189-198.
doi:10.1089/clo.2005.7.189.
Dr. Ken Sawai Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. Soichi Kageyama Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. Satoru Moriyasu Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. Hiroki Hirayama Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. Akira Minamihashi Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. Sadao Onoe Department of Animal Biotechnology, Hokkaido Animal Research Center, Shintoku, Hokkaido, Japan. The low efficiency of animal production using somatic cell nuclear transfer procedures is considered to be the result of an incomplete reprogramming of donor cell nucleus, which leads to abnormal expression of developmentally important genes. The objective of this study was to determine the abundance of gene transcripts of insulin-like growth factor (IGF)–related genes in cloned bovine embryos reconstructed with somatic cells. Single embryos derived from nuclear transfer reconstructed with somatic cells (NT-SC) or embryo blastomeres (NTEM), in vitro fertilization (IVF), in vivo production (Vivo), and parthenogenetic treatment (PA) were analyzed. The relative abundance of mRNA was examined by real-time PCR. Transcripts of the IGF-1 receptor (r) and IGF binding protein (BP)-2 were detected in all embryos, regardless of origin. IGF-IIr and IGFBP-3 transcripts signals in NT-SC embryos were detected with significantly lower frequencies of 25 and 50%, respectively. Although IGF-Ir and IGFIIr transcript levels were not significantly different in NT-SC, NT-EM, IVF, Vivo, and PA embryos, the relative abundance in individual embryos indicated large variation in NT-SC. IGFBP-2 and IGFBP-3 levels were high in the Vivo embryos compared with NT-SC, NT-EM, IVF, or PA embryos. These results suggest differences in levels of transcripts of IGF-related genes in the bovine embryos produced by NT compared with IVF, Vivo, and PA.  This paper was cited by:Studies on Gene Expression in Bovine Embryos Derived from Somatic Cell Nuclear Transfer Ken SAWAI Journal of Reproduction and Development. Feb 2009, Vol. 55, No. 1: 11-16 CrossRef Messenger RNA expression patterns of histone-associated genes in bovine preimplantation embryos derived from different origins Monika Nowak-Imialek, Christine Wrenzycki, Doris Herrmann, Andrea Lucas-Hahn, Irina Lagutina, Erika Lemme, Giovanna Lazzari, Cesare Galli, Heiner Niemann Molecular Reproduction and Development. Jun 2008, Vol. 75, No. 5: 731-743 CrossRef Changes in the mRNA Transcripts of Insulin-Like Growth Factor Ligand, Receptors and Binding Proteins in Bovine Blastocysts and Elongated Embryos Derived from Somatic Cell Nuclear Transfer Ken SAWAI, Soichi KAGEYAMA, Satoru MORIYASU, Hiroki HIRAYAMA, Akira MINAMIHASHI, Sadao ONOE Journal of Reproduction and Development. Feb 2007, Vol. 53, No. 1: 77-86 CrossRef
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