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    • 6. 发明公开
    • Method of obtaining a binder to prepro-vasopressin or fragments thereof
    • Verfahren zum Erhalten eines BindersfürPreprovasopressin oder Fragmente davon
    • EP2541252A1
    • 2013-01-02
    • EP11005371.7
    • 2011-06-30
    • B.R.A.H.M.S GmbH
    • Struck, Joachim
    • G01N33/68G01N33/74C07K7/00C07K16/00
    • G01N33/74C07K7/16C07K16/26C07K2317/34G01N33/6878G01N2410/04
    • Method of obtaining a binder to prepro-Vasopressin (SEQ ID NO. 1) or fragments thereof, including Copeptin (SEQ ID NO. 2), comprising at least one of the steps of:
      a) generating the binder using a developer comprising an amino acid sequence contained in an amino acid sequence corresponding to the C-terminal part but lacking amino acid 164 of prepro-Vasopressin;
      b) determining whether the binder is capable of binding to an amino acid sequence contained in an amino acid sequence corresponding to the C-terminal part but lacking amino acid 164 of prepro-Vasopressin;
      c) selecting and optionally isolating the binder from a plurality of binders which is capable of binding to an amino acid sequence contained in an amino acid sequence corresponding to the C-terminal part but lacking amino acid 164 of prepro-Vasopressin;
      d) carrying out binding assays with the binder in order to determine the ex vivo stability of prepro-Vasopressin or fragments thereof, including Copeptin, in a biological sample;
      e) carrying out binding assays with the binder and another binder for comparison purposes in order to determine the concentration of prepro-Vasopressin or fragments thereof, including Copeptin, in a biological sample;
      wherein the C-terminal part consists of amino acids 138 to 164 of prepro-Vasopressin,
      in order to obtain a binder or a mixture of binders capable of binding to an epitope contained in an amino acid sequence corresponding to amino acids 138 to 163 but lacking amino acid 164 of prepro-Vasopressin.
    • 获得前原血管加压素(SEQ ID NO.1)的粘合剂或其片段的方法,包括共肽蛋白(SEQ ID NO.2),其包含至少一个以下步骤:a)使用包含氨基 酸序列包含在对应于C-末端部分但缺乏前加压素的氨基酸164的氨基酸序列中; b)确定所述粘合剂是否能够结合对应于C末端部分但缺乏前加压素的氨基酸164的氨基酸序列中的氨基酸序列; c)从能够结合对应于C末端部分但缺乏前加压素的氨基酸164的氨基酸序列中的氨基酸序列的多个粘合剂中选择和任选地分离粘合剂; d)用粘合剂进行结合测定,以确定生物样品中前加压素或其片段(包括Coppinin)在体外的稳定性; e)进行与粘合剂和另一种粘合剂的结合测定用于比较目的,以便确定生物样品中前加压素或其片段(包括Coppinin)的浓度; 其中C末端部分由前加压素的氨基酸138至164组成,以获得能够结合与氨基酸138至163相对应的氨基酸序列中所含的表位的结合物或粘合剂的混合物,但缺乏 前加压素的氨基酸164。