USE OF PLP WITH PEG-rMETase IN VIVO FOR ENHANCED EFFICACY
    5.
    发明申请
    USE OF PLP WITH PEG-rMETase IN VIVO FOR ENHANCED EFFICACY 审中-公开
    在血液中使用PEG-rMETase的PLP用于增强功效

    公开(公告)号:US20050036981A1

    公开(公告)日:2005-02-17

    申请号:US10891662

    申请日:2004-07-15

    IPC分类号: A61K31/74 A61K38/51 A61K38/44

    摘要: This invention relates to methods of modifying pyridoxal 5′ phosphate (PLP) dependent enzymes to extend the serum half-life of the enzyme, extend the in vivo period of methionine depletion in a host, and decrease the immunogenicity of the enzyme. A preferred PLP-dependent enzyme to be modified is a methioninase, preferably a recombinant methioninase (rMETase). The invention further relates to compositions comprising a modified PLP-dependent enzyme and methods of using the same.

    摘要翻译: 本发明涉及修饰吡哆醛5'磷酸(PLP)依赖性酶的方法以延长酶的血清半衰期,延长宿主中甲硫氨酸消耗的体内周期,并降低酶的免疫原性。 待修饰的优选的PLP依赖性酶是蛋氨酸酶,优选重组蛋氨酸酶(rMETase)。 本发明还涉及包含修饰的PLP依赖性酶的组合物及其使用方法。

    Biological fluid assay methods
    9.
    发明授权
    Biological fluid assay methods 有权
    生物流体测定方法

    公开(公告)号:US06329162B1

    公开(公告)日:2001-12-11

    申请号:US09550723

    申请日:2000-04-17

    IPC分类号: C12Q148

    CPC分类号: C12Q1/48 G01N2333/91011

    摘要: A method to assess the level of folate in a biological sample comprises: providing said sample with glycine N-methyltransferase (GMT) and with an excess of S-adenosyl methionine (SAM) and of glycine; providing a control which contains no folate with said GMT and excess SAM and glycine in comparable amounts to those provided to the sample; and comparing the concentration of at least one product formed in the sample with the concentrations of said product formed in the control, whereby the difference in levels of said product in the sample as compared to the control is directly proportional to the level of folate in the sample.

    摘要翻译: 评估生物样品中叶酸水平的方法包括:向所述样品提供甘氨酸N-甲基转移酶(GMT)和过量的S-腺苷甲硫氨酸(SAM)和甘氨酸;提供不含所述叶酸的叶酸的对照 GMT和过量的SAM和甘氨酸与提供给样品的量相当; 并将样品中形成的至少一种产品的浓度与对照中形成的所述产物的浓度进行比较,由此与对照相比,样品中所述产物的水平差异与样品中叶酸水平成正比 。