Effects of Recipient Oocytes and Donor Cells Condition on in Vitro Development of Cloned Embryos after Interspecies Nuclear Transfer with Caprine Somatic Cell
Lee, M.Y.;Park, H.S.(Jinju National University, Jinju, Republic of Korea)E-mail:[email protected]
This study was conducted to investigate the developmental ability of caprine embryos after somatic cell interspecies nuclear transfer. Donor cells were obtained from an ear-skin biopsy of a caprine, digested with 0.25% trypsin-EDTA in PBS, and primary fibroblast cultures were established in TCM-199 with 10% FBS. After maturation, expanded cumulus cells were removed by vigorous pipetting in the presence of 0.3% hyaluronidase. The matured oocytes were dipped in D-PBS plus 10% FBS ＋7.5 ㎍/ml cytochalasin B and 0.05 M sucrose. The reconstructed oocytes were electrically fused with donor cells in 0.3 M mannitol fusion medium. After the electofusion, embryos were activated by electric stimulation.
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