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    • 3. 发明申请
    • METABOLIC ENGINEERING OF A GALACTOSE ASSIMILATION PATHWAY IN THE GLYCOENGINEERED YEAST PICHIA PASTORIS
    • 糖生成酵母菌毕赤酵母中半乳糖同工酶途径的代谢工程
    • WO2010099153A2
    • 2010-09-02
    • PCT/US2010/025163
    • 2010-02-24
    • MERCK SHARP & DOHME CORP.DAVIDSON, Robert, C.BOBROWICZ, PiotrZHA, Dongxing
    • DAVIDSON, Robert, C.BOBROWICZ, PiotrZHA, Dongxing
    • C12N15/81C12N15/54C12N15/61C12N9/12C12N9/90C12N1/16C12P21/00C07K16/18
    • C12P21/005C07K16/32C07K2317/14C07K2317/41C12N1/16C12N9/1205C12N9/1241C12N9/90C12N15/815
    • Lower eukaryotic cells such as Pichia pastoris that normally cannot use galactose as a carbon source but which have been genetically engineered according to the methods herein to use galactose as a sole source of carbon are described. The cells are genetically engineered to express several of the enzymes comprising the Leloir pathway. In particular, the cells are genetically engineered to express a galactokinase, a UDP-galactose-C4-epimerase, and a galactose-1-phosphate uridyltransferase, and optionally a galactose permease. In addition, a method is provided for improving the yield of glycoproteins that have galactose-terminated or -containing N-glycans in cells that have been genetically engineered to produce glycoproteins with N-glycans having galactose residues but which normally lack the enzymes comprising the Leloir pathway comprising transforming the cells with one or more nucleic acid molecules encoding a galactokinase, a UDP-galactose-C4-epimerase, and a galactose-1-phosphate uridyltransferase. The methods and host cells described enable the presence or lack of the ability to assimilate galactose as a selection method for making recombinant cells. The methods and host cells are shown herein to be particularly useful for making immunoglobulins and the like that have galactose-terminated or containing N-glycans.
    • 描述了通常不能使用半乳糖作为碳源但是已经根据本文的方法基因工程化以使用半乳糖作为碳的唯一来源的低等真核细胞,例如巴斯德毕赤酵母(Pichia pastoris)。 这些细胞经过遗传工程改造后可以表达包含Leloir途径的几种酶。 特别地,细胞被遗传工程化以表达半乳糖激酶,UDP-半乳糖-C4-差向异构酶和半乳糖-1-磷酸尿苷酰转移酶,并且任选地表达半乳糖通透酶。 此外,提供了一种方法,用于提高细胞中具有半乳糖封端或含有N-聚糖的糖蛋白的产量,所述细胞经基因工程改造以产生具有半乳糖残基的N-聚糖但通常缺少包含Leloir的酶的糖蛋白 包括用编码半乳糖激酶,UDP-半乳糖-C4-差向异构酶和半乳糖-1-磷酸尿苷酰转移酶的一种或多种核酸分子转化细胞。 所描述的方法和宿主细胞使得存在或缺乏同化半乳糖作为制备重组细胞的选择方法的能力。 这里显示的方法和宿主细胞对于制备具有半乳糖封端的或含有N-聚糖的免疫球蛋白等是特别有用的。
    • 5. 发明公开
    • METABOLIC ENGINEERING OF A GALACTOSE ASSIMILATION PATHWAY IN THE GLYCOENGINEERED YEAST PICHIA PASTORIS
    • 糖生成酵母菌毕赤酵母中半乳糖同工酶途径的代谢工程
    • EP2401378A2
    • 2012-01-04
    • EP10706438.8
    • 2010-02-24
    • Merck Sharp & Dohme Corp.
    • DAVIDSON, Robert, C.BOBROWICZ, PiotrZHA, Dongxing
    • C12N15/81C12N15/54C12N15/61C12N9/12C12N9/90C12N1/16C12P21/00C07K16/18
    • C12P21/005C07K16/32C07K2317/14C07K2317/41C12N1/16C12N9/1205C12N9/1241C12N9/90C12N15/815
    • Lower eukaryotic cells such as Pichia pastoris that normally cannot use galactose as a carbon source but which have been genetically engineered according to the methods herein to use galactose as a sole source of carbon are described. The cells are genetically engineered to express several of the enzymes comprising the Leloir pathway. In particular, the cells are genetically engineered to express a galactokinase, a UDP-galactose-C4-epimerase, and a galactose-1-phosphate uridyltransferase, and optionally a galactose permease. In addition, a method is provided for improving the yield of glycoproteins that have galactose-terminated or -containing N-glycans in cells that have been genetically engineered to produce glycoproteins with N-glycans having galactose residues but which normally lack the enzymes comprising the Leloir pathway comprising transforming the cells with one or more nucleic acid molecules encoding a galactokinase, a UDP-galactose-C4-epimerase, and a galactose-1-phosphate uridyltransferase. The methods and host cells described enable the presence or lack of the ability to assimilate galactose as a selection method for making recombinant cells. The methods and host cells are shown herein to be particularly useful for making immunoglobulins and the like that have galactose-terminated or containing N-glycans.
    • 描述了通常不能使用半乳糖作为碳源但是已经根据本文的方法基因工程改造以使用半乳糖作为碳的唯一来源的低等真核细胞,例如巴斯德毕赤酵母(Pichia pastoris)。 这些细胞经过遗传工程改造后可以表达包含Leloir途径的几种酶。 特别地,细胞被遗传工程化以表达半乳糖激酶,UDP-半乳糖-C4-差向异构酶和半乳糖-1-磷酸尿苷酰转移酶,并且任选地表达半乳糖通透酶。 此外,提供了一种方法,用于提高细胞中具有半乳糖封端或含有N-聚糖的糖蛋白的产量,所述细胞经基因工程改造以产生具有半乳糖残基的N-聚糖但通常缺少包含Leloir的酶的糖蛋白 包括用编码半乳糖激酶,UDP-半乳糖-C4-差向异构酶和半乳糖-1-磷酸尿苷酰转移酶的一种或多种核酸分子转化细胞。 所描述的方法和宿主细胞使得存在或缺乏同化半乳糖作为制备重组细胞的选择方法的能力。 这里显示的方法和宿主细胞对于制备具有半乳糖封端的或含有N-聚糖的免疫球蛋白等是特别有用的。