Purification of blood coagulation factors

    公开(公告)号:US09896677B2

    公开(公告)日:2018-02-20

    申请号:US13522548

    申请日:2011-01-18

    申请人: Jais Rose Bjelke

    发明人: Jais Rose Bjelke

    IPC分类号: C12N9/48 C12N9/64 C07K14/745

    摘要: The present invention relates to the purification of vitamin K-dependent blood coagulation factors, such as Factor IX (FIX). In particular, the invention provides a method for purifying Factor IX having a desired content of gamma-carboxyglutamic acid from a sample comprising a mixture of species of said Factor IX having different contents of gamma-carboxyglutamic acid, said method comprising the steps of: (a) loading said Factor IX sample onto an immunoaffinity chromatography material coupled to a binding moiety for gamma-carboxyglutamic acid; (b) eluting said Factor IX; and (c) selecting a fraction obtained from said elution wherein the polypeptides in the fraction have the desired content of gamma-carboxyglutamic acids; characterized in that the total concentration of Factor IX within said sample exceeds the binding ability of the immunoaffinity chromatography material.