• 제목/요약/키워드: cloned embryo

검색결과 168건 처리시간 0.033초

Analysis of Gene Expression in Cloned Bovine Placentae

  • Kim, Hong-Rae;Kang, Jae-Ku;Yoon, Jong-Taek;Seong, Hwan-Hoo;Jo, Min-Rae;Park, Chang-Sik;Jin, Dong-Il
    • 한국수정란이식학회:학술대회논문집
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    • 한국수정란이식학회 2004년도 제4회 발생공학 국제심포지움 및 학술대회
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    • pp.62-62
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    • 2004

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핵이식에 의한 복제동물 생산의 최근 연구 성과 (Recent Research on Production of Cloned Animals by Nuclear Transplantation)

  • 박충생
    • 한국수정란이식학회지
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    • 제8권1호
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    • pp.37-44
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    • 1993

  • Nuclear transplantation techinque has been found to be the most potential and efficient method for producing a large number of genetically identical animals from a single embryo. The technical development of nuclear transplantation in mammals and its application to the production of cloned animals were reviewed. For the efficient and successful production of cloned embryos by nuclear transplantation, selection and micromanipulation of recipient eggs or embryos as capacious recipient cytoplasm, and benefitial preparation of multiple totipotent embryonic cells as donor nuclei, and also fusion technique are very critical. Recent works approaching to these critical points were introduced and discussed.

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복제동물 생산을 위한 핵이식기법의 응용 (Application of Nuclear Transplantation to Production of Cloned Animals)

  • 이효충
    • 한국수정란이식학회지
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    • 제6권2호
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    • pp.18-29
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    • 1991

  • Nuclear transplantation technique is known as the most potential and efficient method for producing a large number of genetically identical animals from a single embryo. The technical development of nuclear transplantation in mammals and its application to the production of cloned animals are described. For the efficient and successful production of cloned embryos by nuclear transplantation, the right selection and micromanipulation of recipient eggs or embryos as capacious recipient cytoplasm, the adequate and benefitlal preparation of multiple totipotent embryonic cells as donor nuclei, and also the fusion technique are very critical. Recent studies approaching to these critical points are introduced and discussed. Up to date, the overall efficiency of production of cloned embryos and offspring in livestock is estimated to be low. Further technical development of nuclear transplantation will enable large-scale production of cloned livestock and in near future the commercial cloning of animals will become a reality.

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Cats Cloned from Fetal Fibroblast Cells by Nuclear Transfer

  • Yin, X.J.;Lee, H.S.;Lee, Y.H.;Hwang, W.S.;Kong, I.K.
    • 한국수정란이식학회:학술대회논문집
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    • 한국수정란이식학회 2004년도 제4회 발생공학 국제심포지움 및 학술대회
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    • pp.26-31
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    • 2004

  • This work was undertaken in order to study the developmental competence of nuclear transfer cat embryo with fetal fibroblast and adult skin fibroblast as donor nuclei. Oocytes wererecovered by mincing the ovaries in Hepes-buffered TCM199 and selected the cumulus oocyte complexes (COCs) with compact cumulus cell mass and dark. Homogenous ooplasm were cultured for maturation in TCM199 + 10% fetal bovine serum (FBS) for 12 hours and used as a source of recipient cytoplast for exogenous somatic nuclei. In Experiment 1, we evaluated the effect donor cell types on the reconstruction and development of cloned embryos. Fusion, first cleavage and blastocyst developmental rate was not different between fetal fibroblast and adult skin cell (71.2 vs. 66.8; 71.0 vs. 57.6; 4.0 vs. 6.1 %, P<0.05). In Experiment 2, cloned embryos were surgically transferred into the oviducts of recipient queens. One of seven recipient queens was delivered naturally 2healthy cloned cats and 1 stillborn from fetal fibroblast cell of male origin after 65 days embryo transfer. One of three recipient queens was delivered naturally 1 healthy cloned cat from adult skin cell of female after 65 days embryo transfer. The cloned cats showed genotypes identical to the donor cell lines, indicating that adult somatic cells can be used for feline cloning.

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