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.
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.