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논문 기본 정보

자료유형
학술저널
저자정보
Park, Joo-Hee (School of Veterinary Medicine, Kangwon National University) Kwon, Dae-JinK (School of Veterinary Medicine, Kangwon National University) Lee, Beom-Ki (School of Veterinary Medicine, Kangwon National University) Hwang, In-Sun (College of Animal Life Science, Kangwon National University) Park, Choon-Keun (College of Animal Life Science, Kangwon National University) Yang, Boo-Keun (College of Animal Life Science, Kangwon National University) Cheong, Hee-Tae (School of Veterinary Medicine, Kangwon National University)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제33권 제1호
발행연도
2009.1
수록면
13 - 18 (6page)

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The aim of this study was to examine the microtubule distributions of somatic cell nuclear transfer (SCNT) and parthenogenetic porcine embryos. Porcine SCNT embryos were produced by fusion of serum-starved fetal fibroblast cells with enucleated oocytes. Reconstituted and mature oocytes were activated by electric pulses combined with 6-dimethlyaminopurine treatment. SCNT and parthenogenetic embryos were cultured in vitro for 6 days. Microtubule assembly of embryos was examined by confocal microscopy 1 hr and 20 hr after fusion or activation, respectively. The proportions of embryos developed to the blastocyst stage were 25.7% and 30.4% in SCNT and parthenogenetic embryos, respectively. The frequency of embryos showing $\beta$-tubulins was 81.8% in parthenogenetic embryos, whereas 31.3% in SCNT embryos 1 hr after activation or fusion. The frequency of the embryos underwent normal mitotic phase was low in SCNT embryos (40.6%) compared to that of parthenogenetic ones (59.7%) 20 hr after fusion or activation (p<0.05). The rate of SCNT embryos with an abnormal mitosis pattern is about twice compared to that of parthenogenetic ones. The spindle assembly and its distribution of SCNT embryos in the first mitotic phase were not different from those of parthenogenetic ones. The result shows that although microtubule distribution of porcine SCNT embryos shortly after fusion is different from parthenogenetic embryos, and the frequency of abnormal mitosis 20 hr after fusion or activation is slightly increased in SCNT embryos, microtubule distributions at the first mitotic phase are similar in both SCNT and parthenogenetic embryos.

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