METHOD FOR CONSTRUCTING ENGINEERED YEAST FOR GLYCOPROTEIN PREPARATION AND STRAIN THEREOF

    公开(公告)号:US20230279337A1

    公开(公告)日:2023-09-07

    申请号:US17996710

    申请日:2021-04-23

    IPC分类号: C12N1/16 C12N15/52

    CPC分类号: C12N1/165 C12N15/52

    摘要: The present invention discloses a method for constructing an engineered yeast for glycoprotein preparation and strains thereof. The present invention provides a method for constructing yeast engineered strain having the ability to modify a specific mammalian cell glycoform, comprising: inactivating endogenous α-1,6-mannose transferase, phosphomannose transferase, phosphomannose synthase, β-mannose transferase I-IV, and O-mannose transferase I of a receptore yeast; and expressing exogenous mannosidase I, N-acetylglucosamine transferase I, mannosidase II, N-acetylglucosamine transferase II, galactose isomerase and exogenous galactose transferase. The yeast engineered strain obtained in the present invention features a short construction period, fast growth, easy large-scale production, and high safety, so that they can not only be used to prepare common glycoprotein vaccines, but also very suitable for the efficient research and development and large-scale production of vaccines under emergency conditions such as sudden new infectious diseases. This has important implications in terms of medicinal uses.