Abstract:
A recloned fertilized egg of a goat, and a method for preparing the recloned fertilized egg of a goat are provided to allow the cloned goat having a desired character to be produced massively into many individuals for many generations. A recloned fertilized egg of a goat is prepared by preparing the somatic cell derived from the cloned goat born by the somatic cell nuclear transfer as a donor nucleus for re-cloning; collecting an ovum from the goat to prepare a recipient oocyte; and enucleating the recipient oocyte, transferring the donor nucleus to fuse it, and activating it to prepare a fertilized egg.
Abstract:
A method for performing animal embryo biopsy using laser is provided to be able to rapidly and conveniently select and transplant only desired fertilized eggs with decreasing damage of the fertilized eggs, thereby increasing production efficiency of domestic animal. The method comprises the steps of: (a) washing fertilized eggs of a cow at the development stage such as 8-cell stage, blastocyst stage and gemmule stage with a buffer solution such as D-PBS and locating it at a buffer solution containing serum; (b) after fixing the fertilized eggs with a compensation pipette where the end portion is inclinedly worked, applying laser having a strength of 40-60 microsec 2-3 times to zone pellucida of the fertilized eggs so as to perforate the zone pellucida; and (c) after locating an enucleation pipette, where the end portion is inclinedly worked, to be opposite to the compensation pipette along the center of the fertilized eggs where the zone pellucida is perforated, applying pressure thereto using two pipettes to emit blastomere.
Abstract:
본 발명은 CSF(Colony stimulating factor, 세포집락 자극 인자), 바람직하게는 사람의 과립구 대식세포-콜로니 자극 인자(hGM-CSF)를 유선에서 생산하는 형질전환 복제 산양 및 그의 제조 방법에 관한 것으로서, 보다 구체적으로는 1) 산양 의 태아 또는 암컷 산양으로부터 체세포를 분리하는 단계; 2) 유선(mammary gland) 특이적 프로모터 및 CSF(Colony stimulating factor, 세포집락 자극 인자)유전자를 코딩하는 폴리뉴클레오티드를 포함하는 발현벡터를 제조한 후 상기 체세포에 도입시키는 단계; 3) 상기 발현 벡터가 도입된 클론 체세포를 선별한 후 배양하는 단계; 4) 어미 산양으로부터 채취한 난자의 핵을 제거하고 상기 클론 체세포와 융합시키는 단계; 및 5) 상기 융합된 복제란을 수란 산양(대리모)에 이식하여 산자를 출산하는 단계를 포함하는 CSF 단백질을 생산하는 형질전환 복제 산양 및 그의 제조 방법에 관한 것이다. 본 발명의 제조방법에 의하여 제조된 형질전환 복제 산양은 기존 방법의 후-번역수정(post-translational modification) 또는 대량 생산 등의 문제점을 극복할 수 있으며, CSF 단백질을 유선에서 생산함으로써 쉽게 획득할 수 있는 이점과 함께 이를 백혈병 치료 보조제 및 면역 강화제 등으로 사용될 수 있을 것으로 기대된다. hGM-CSF, 형질전환된 복제 산양
Abstract:
A manufacturing method of the transformed reproduction goat producing hgm-csf and transformation reproduction goat produced by the method are provided. A transformation reproduction goat manufacturing method for producing the CSF protein comprises: a step for separating the somatic cell from the fetus of goat or the female goat; a step for introducing into the somatic cell after preparing expression vector including the polynucleotide coding CSF; a step for cultivating after selecting the clone somatic cell in which the expression vector is introduced; a step for removing the nucleus of the ovum collected from the mother animal goat and fusing with the clone somatic cell; and a step for transplanting the fused clone egg into the goat.
Abstract:
A production method of a transgenic cloned embryo having a goat somatic cell nucleus transfected with hGM-CSF(human granulocyte macrophage-colony stimulating factor) gene is provided to produce a cloned goat expressing the hGM-CSF from the mammary gland, thereby improving the production yield of hGM-CSF. A production method of a transgenic cloned goat embryo comprises the steps of: (1) transforming a somatic cell of goat with a recombinant expression vector containing an hGM-CSF gene to prepare a nucleus donor cell; (2) collecting an ovum from the goat to prepare a nucleus recipient ovum; and (3) denucleating the recipient ovum, transplanting the nucleus donor cell into the recipient ovum and fusing them to prepare the transgenic cloned embryo.