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    Method for decoloring human serum albumin
    1.
    发明授权
    Method for decoloring human serum albumin 失效
    人血清白蛋白脱色方法

    公开(公告)号：US5710253A

    公开(公告)日：1998-01-20

    申请号：US358302

    申请日：1994-12-19

    申请人： Wataru Ohtani ,  Naoto Furuhata ,  Akinori Sumi ,  Munehiro Noda ,  Takao Ohmura

    发明人： Wataru Ohtani ,  Naoto Furuhata ,  Akinori Sumi ,  Munehiro Noda ,  Takao Ohmura

    IPC分类号： C12P21/00 ,  A61K38/16 ,  A61P7/00 ,  C07K1/14 ,  C07K1/20 ,  C07K14/76 ,  C07K14/765 ,  C12N15/00 ,  C12R1/84 ,  C07K1/36 ,  A61K38/38 ,  C07K1/16

    CPC分类号： C07K14/765

    摘要： A method for decoloring a recombinant human serum albumin by treating the albumin with a reducing agent is disclosed. Also, a method for decoloring a recombinant human serum albumin by treating the albumin with a method removing free polysaccharides with a cation exchanger followed by heat treatment is disclosed. The present invention provides a recombinant human serum albumin, coloring of which is fully suppressed by preventing binding of certain coloring components, which are contained in the raw materials or contaminants secreted by a microorganism, to human serum albumin so as not to cause coloring of the human serum albumin.

    摘要翻译： 公开了通过用还原剂处理白蛋白来使重组人血清白蛋白脱色的方法。 另外，公开了一种通过用阳离子交换剂随后热处理除去游离多糖的方法处理白蛋白来对重组人血清白蛋白进行脱色的方法。 本发明提供一种重组人血清白蛋白，通过防止原料中含有的某些着色成分或微生物分泌的污染物与人血清白蛋白结合，使其着色得到完全抑制，从而不引起 人血清白蛋白。

    Recombinant human serum albumin, process for producing the same and pharmaceutical preparation containing the same
    3.
    发明授权
    Recombinant human serum albumin, process for producing the same and pharmaceutical preparation containing the same 失效
    重组人血清白蛋白，其制备方法和含有其的药物制剂

    公开(公告)号：US5986062A

    公开(公告)日：1999-11-16

    申请号：US538471

    申请日：1995-10-03

    申请人： Takao Ohmura ,  Akinori Sumi ,  Wataru Ohtani ,  Naoto Furuhata ,  Kazuya Takeshima ,  Kaeko Kamide ,  Munehiro Noda ,  Masahide Kondo ,  Syoichi Ishikawa ,  Kazuhiro Oohara ,  Kazumasa Yokoyama ,  Nagatoshi Fujiwara

    发明人： Takao Ohmura ,  Akinori Sumi ,  Wataru Ohtani ,  Naoto Furuhata ,  Kazuya Takeshima ,  Kaeko Kamide ,  Munehiro Noda ,  Masahide Kondo ,  Syoichi Ishikawa ,  Kazuhiro Oohara ,  Kazumasa Yokoyama ,  Nagatoshi Fujiwara

    IPC分类号： A61K38/00 ,  C07K14/765

    CPC分类号： C07K14/765 ,  A61K2039/545 ,  A61K38/00

    摘要： Human serum albumin obtained by gene manipulation techniques can be purified by a combination of specified steps in which a culture supernatant obtained from a human serum albumin-producing host is subjected to ultrafiltration, heat treatment, acid treatment and another ultrafiltration, followed by subsequent treatments with a cation exchanger, a hydrophobic chromatography carrier and an anion exchanger, and by salting-out to thereby obtain a pure form of human serum albumin which contains substantially no proteinous and polysaccharide contaminants, which is formulated into a pharmaceutical preparation. The thus obtained human serum albumin can further be purified by treating recombinant human serum albumin with a hydrophobic chromatography carrier at pH of 2 to 5 and a salt concentration of 0.4 to 1 and exposing the carrier to a pH of 6 to 8 and a salt concentration of 0.01 to 0.3 M, or treating the culture supernatant with boric acid or a salt thereof at pH 8 to 11 for 1 to 10 hours and recovering the supernatant. This process makes it possible to effeciently purify recombinant human serum albumin and to provide substantially pure human serum albumin which does not contain producer host-related substances and other contaminants and is sufficiently free from coloration.

    摘要翻译： 通过基因操作技术获得的人血清白蛋白可以通过特定步骤的组合来纯化，其中将得自人血清白蛋白的宿主的培养上清液进行超滤，热处理，酸处理和另一次超滤，然后用 阳离子交换剂，疏水性色谱载体和阴离子交换剂，并通过盐析，从而获得纯的形式的人血清白蛋白，其基本上不含有配制成药物制剂的蛋白质和多糖污染物。 由此获得的人血清白蛋白可以进一步通过用pH为2至5和盐浓度为0.4至1的疏水色谱载体处理重组人血清白蛋白并将载体暴露于pH6至8和盐浓度 为0.01〜0.3M，或用硼酸或其盐在pH8〜11处理培养上清1〜10小时，回收上清液。 该方法使得可以有效地纯化重组人血清白蛋白并提供基本上纯的人血清白蛋白，其不含生产者宿主相关物质和其它污染物，并且没有着色。