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    • 3. 发明授权
    • Glycoprotein and process for producing the same
    • 糖蛋白及其制备方法
    • US07579166B2
    • 2009-08-25
    • US10480790
    • 2002-06-14
    • Yasunori ChibaYoshifumi JigamiHitoshi SakurabaKazuo KobayashiMakoto TakeuchiYoriko Takeuchi, legal representative
    • Yasunori ChibaYoshifumi JigamiHitoshi SakurabaKazuo KobayashiMakoto Takeuchi
    • C12N15/00C12P21/00C12Q1/68C07K14/00
    • C12P21/005A61K36/064A61K38/17C12N9/1051A61K2300/00
    • A process for producing a lysosomal enzyme having a mannose-6-phosphate-containing acidic sugar chain, wherein the process comprising: culturing in a medium yeast cells obtained by introducing a lysosomal enzyme gene into a sugar chain biosynthetic enzyme gene mutant strain of yeast, collecting a lysosomal enzyme having a phosphate-containing sugar chain from the culture, and then treating the enzyme with α-mannosidase; and pharmaceutical compositions for treatment of human lysosomal enzyme deficiencies produced by the process. The genetic engineering technique using the yeast according to the present invention allows large-amount and high-purity production of a glycoprotein having a phosphate-containing acidic sugar chain which can serve as a labeling marker for transporting into lysosomes in cells of mammals such as human. The glycoprotein having a phosphate-containing acidic sugar chain according to the invention may be utilized as a drug effective in treatment of human lysosomal enzyme deficiencies, etc.
    • 一种生产含有甘露糖-6-磷酸的酸性糖链的溶酶体酶的方法,其中所述方法包括:在通过将溶酶体酶基因导入酵母的糖链生物合成酶基因突变菌株获得的培养基中培养酵母, 从培养物中收集含有含磷酸盐糖链的溶酶体酶,然后用α-甘露糖苷酶处理酶; 以及用于治疗由该方法产生的人溶酶体酶缺陷的药物组合物。 使用根据本发明的酵母的基因工程技术允许大量和高纯度产生具有含磷酸盐的酸性糖链的糖蛋白,其可以用作在诸如人类的哺乳动物的细胞中输送到溶酶体的标记标记 。 具有根据本发明的含磷酸盐酸性糖链的糖蛋白可以用作治疗人溶酶体酶缺陷等的药物。
    • 5. 发明授权
    • Mannose-1-phosphate transferase gene from yeast and its use for
producing phosphate-containing acidic sugars
    • 来自酵母的甘露糖-1-磷酸转移酶基因及其用于产生含磷酸性酸性糖的用途
    • US5854031A
    • 1998-12-29
    • US748947
    • 1996-11-14
    • Yoshifumi JigamiKen-ichi NakayamaYoh-ichi ShimmaXiao-hui Wang
    • Yoshifumi JigamiKen-ichi NakayamaYoh-ichi ShimmaXiao-hui Wang
    • C12N15/09C07H21/04C12N1/19C12N9/12C12P19/04C12P19/26C12R1/865C12N9/10C12N15/63
    • C12N9/1205C12P19/04
    • The present invention relates to a mannose-1-phosphate transferase gene from yeast (Saccharomyces cerevisiae), a process for producing a mannose-1-phosphate-containing acidic sugar chain which comprises culturing yeast cells transformed with a plasmid DNA containing said gene, obtaining mannose-1-phosphate transferase from the culture, and allowing the enzyme to act on a neutral core sugar chain in vivo or in vitro, and a process for producing a phosphate-containing acidic sugar chain which comprises removal of a mannose moiety by acid-treatment of said mannose-1-phosphate-containing acidic sugar chain. According to the present invention, an acidic sugar chain having mannose-1-phosphate added to the same neutral core sugar chain as a high mannose type sugar chain produced by mammalian (e.g. human) cells can be produced in large amounts with high purity by genetic engineering means using yeast. Further, an acidic sugar chain identical with a useful phosphate-containing core sugar chain derived from human, which can function as a labeling marker for transport of glycoproteins into lysosomes in mammalian (e.g. human) cells, can be produced in large amounts with high purity.
    • 本发明涉及来自酵母(酿酒酵母)的甘露糖-1-磷酸转移酶基因,含有甘露糖-1-磷酸的酸性糖链的制备方法,其包括培养用含有该基因的质粒DNA转化的酵母细胞,得到 来自培养物的甘露糖-1-磷酸转移酶,并且允许酶在体内或体外作用于中性核心糖链,以及生产含磷酸盐酸性糖链的方法,其包括通过酸 - 磷酸转移酶去除甘露糖部分, 处理所述含甘露糖-1-磷酸的酸性糖链。 根据本发明,通过哺乳动物(例如人)细胞产生的与甘露糖型糖链相同的中性核心糖链上添加的具有甘露糖-1-磷酸的酸性糖链可通过遗传学以高纯度大量生产 工程意味着使用酵母。 此外,可以以高纯度大量生产与用于将哺乳动物(例如人)细胞中的糖蛋白转运到溶酶体中的可用作标记标记的来源于人的有用的含磷酸核心糖链相同的酸性糖链 。