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    • 3. 发明授权
    • Method for preparing fish embryos
    • 鱼胚制备方法
    • US08258369B2
    • 2012-09-04
    • US12224284
    • 2006-02-24
    • Yuko WakamatsuKenjiro OzatoNorihiko Ozato, legal representative
    • Yuko WakamatsuKenjiro Ozato
    • C12N15/00A01K67/027
    • A01K67/0273A01K2227/40C12N2517/04
    • An object of the invention is to effectively prepare a fish embryo with a correct chromosomal ploidy by nuclear transplantation in which an exogenous fish nucleus is transplanted in a cytoplasmic recipient. For this object, the invention comprises a step of preparing a fish embryo by transplanting a fish cell nucleus to an unfertilized egg. The step of preparing a fish embryo comprises a step of imposing physical and/or chemical stress to the unfertilized egg after activation. By imposing such stress, the stage of haplosis in a female nucleus which happens at the early stage of a series of developmental steps occurring in an unfertilized egg is suppressed and the correct ploidy of an obtained embryo is at least secured.
    • 本发明的目的是通过核移植有效地制备具有正确染色体倍性的鱼胚,其中将外源鱼核移植到细胞质受体中。 为此,本发明包括通过将鱼细胞核移植到未受精卵而制备鱼胚的步骤。 制备鱼胚的步骤包括在活化后对未受精卵施加物理和/或化学应力的步骤。 通过施加这种压力,抑制发生在未受精卵中的一系列发育步骤的早期发生在雌性核中的单倍体的阶段,并且至少确保获得的胚胎的正确倍性。