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The Effects of Donor Cell Type and Culture Medium on in vitro Development of Domestic Cat Embryos Reconstructed by Nuclear Transplantation

  • Fahrudin, Mokhamad (United Graduate School of Veterinary Sciences, Yamaguchi University) ;
  • Otoi, Takeshige (United Graduate School of Veterinary Sciences, Yamaguchi University) ;
  • Karja, Ni Wayan Kurniani (United Graduate School of Veterinary Sciences, Yamaguchi University) ;
  • Murakami, Masako (United Graduate School of Veterinary Sciences, Yamaguchi University) ;
  • Suzuki, Tatsuyuki (United Graduate School of Veterinary Sciences, Yamaguchi University)
  • Received : 2000.12.04
  • Accepted : 2001.03.28
  • Published : 2001.08.01

Abstract

In this study we explored the possibility of performing nuclear transfer in the domestic cat and assessed the ability of different culture media to support in vitro development of reconstructed cat embryos. Donor somatic cells were derived from cultured cumulus cells or explants of oviduct tissue, and recipient cytoplasts from in vitro matured oocytes. A higher percentage of cleavage (84.6% and 86.5%) and development to the morula stage (35.9% and 44.2%) was found when reconstructed embryos receiving cumulus or oviduct cells were cultured in MK1 medium, compared with those cultured in CR1aa (58.7% and 72.5%, 13.8% and 13.6%, respectively). There was no significant difference between MK1 and CR1aa media with respect to the proportion developing to the blastocyst stage (15.4% and 17.3% vs 6.8% and 8.6%, respectively, p>0.05). There was no significant effect (p>0.05) of donor cell type (cumulus and oviduct cells) on the rates of fusion (65.0% and 52.5%), cleavage (84.6% and 86.5%), development to the morula (35.9% and 44.2%), and blastocyst (15.4% and 17.3%) stages when reconstructed embryos were cultured in MK1 medium. Similar results were found for the reconstructed embryos cultured in CR1aa medium. These results show that culture medium has a significant impact on the early development of reconstructed cat embryos, whereas donor cell type does not have a significant effect.

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Cited by

  1. Cloning Companion Animals (Horses, Cats, and Dogs) vol.5, pp.4, 2003, https://doi.org/10.1089/153623003772032817
  2. Effects of the Reproductive Status on Morphological Oocyte Quality and Developmental Competence of Oocytes after In Vitro Fertilization and Somatic Cell Nuclear Transfer in Cat vol.43, pp.2, 2008, https://doi.org/10.1111/j.1439-0531.2007.00870.x