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    • 2. 发明申请
    • FVIII-INDEPENDENT FIX-MUTANT PROTEINS FOR HEMOPHILIA A TREATMENT
    • 用于HEMOPHILIA治疗的FVIII独立固定蛋白
    • WO2008092644A3
    • 2008-10-09
    • PCT/EP2008000685
    • 2008-01-29
    • BAXTER INTBAXTER HEALTHCARE SADOCKAL MICHAELHARTMANN RUDOLFSCHEIFLINGER FRIEDRICH
    • DOCKAL MICHAELHARTMANN RUDOLFSCHEIFLINGER FRIEDRICH
    • C12N9/64A61K38/36
    • C12N9/644A61K38/00C12Y304/21022
    • The present invention relates to recombinant blood coagulation factor IX (rFIX) mutants having factor VIII (FVIII) independent factor X (FX) activation potential. Five full length FIX proteins with combinations of mutations of amino acids important for functional activity of FIX and FIX wild type were cloned and expressed in HEK 293 cells. The proteins were tested by an activated partial thromboplastin time (aPTT) assay in FVIII-depleted plasma as well as in FVIII-inhibited patient plasma. In FVIII-depleted plasma functional activity of the FIX mutants was calculated as increased FVIII equivalent activity. The mutant proteins had increased FVIII equivalent activity. In FVIII-inhibited patient plasma the FEIBA equivalent activity was calculated for analysis of FVIII independent FX activation potential. The proteins had also increased FEIBA equivalent activity. Furthermore, the pre-activated FIX proteins had an increased activity in FIX-depleted plasma containing FVIII inhibitors. Therefore these FIX mutants are alternatives as bypassing agents for treatment of FVIII inhibitor patients.
    • 本发明涉及具有因子VIII(FVIII)独立因子X(FX)活化电位的重组凝血因子IX(rFIX)突变体。 在HEK 293细胞中克隆并表达具有FIX和FIX野生型功能活性重要的氨基酸突变组合的五个全长FIX蛋白。 通过在FVIII消除的血浆以及FVIII抑制的患者血浆中的活化部分凝血活酶时间(aPTT)测定来测试蛋白质。 在FVIII消耗的血浆中,FIX突变体的功能活性被计算为增加的FVIII当量活性。 突变蛋白具有增加的FVIII当量活性。 在FVIII抑制的患者血浆中,计算FEIBA等效活性以分析FVIII独立的FX激活电位。 蛋白质也增加了FEIBA等效活性。 此外,预活化的FIX蛋白在含有FVIII抑制剂的FIX耗尽血浆中具有增加的活性。 因此,这些FIX突变体是用于治疗FVIII抑制剂患者的旁路药物的替代物。
    • 6. 发明申请
    • METHODS FOR TREATING BLEEDING DISORDERS
    • 治疗出血性疾病的方法
    • WO2010020423A3
    • 2010-05-27
    • PCT/EP2009006082
    • 2009-08-21
    • BAXTER HEALTHCARE SABAXTER INTDOCKAL MICHAELSCHEIFLINGER FRIEDRICHTURECEK PETER
    • DOCKAL MICHAELSCHEIFLINGER FRIEDRICHTURECEK PETER
    • A61K31/737A61K31/727A61P7/04
    • A61K31/737A61K31/727A61K38/36A61K38/366A61K38/37A61K38/4846A61K38/4853A61K45/06G01N33/86A61K2300/00
    • A method of factor Xl-dependent blood coagulation enhancement in a subject in need of enhanced blood coagulation comprising administering a therapeutically effective amount of a composition comprising a non-anticoagulant sulfated polysaccharide (NASP) to the subject. A method of factor Xl-dependent blood coagulation enhancement in a subject in need of enhanced blood coagulation comprising: (i) selecting a subject that is not deficient for factor Xl; and (ii) administering a therapeutically effective amount of a composition comprising a non-anticoagulant sulfated polysaccharide (NASP) to the subject, wherein the NASP enhances blood coagulation in a factor Xl-dependent manner. A method of identifying a non-anticoagulant sulfated polysaccharide (NASP) which is capable of enhancing blood coagulation in dependence on FXI, the method comprising: a) combining a blood or plasma sample comprising activation competent FXI with a composition comprising a sulfated polysaccharide and measuring the clotting or thrombin generation parameters of the blood or plasma sample; b) combining a corresponding blood or plasma sample deficient in activation competent FXI with a composition comprising the sulfated polysaccharide and measuring the clotting or thrombin generation parameters of the blood or plasma sample; and c) comparing the clotting or thrombin generation parameters of the blood or plasma samples as determined in steps (a) and (b) with each other, wherein a decrease in the clotting time of the blood sample or an increase in peak thrombin or decrease in peak time of the plasma sample comprising activation competent FXI compared to the clotting time of the blood sample or peak thrombin or peak time of the plasma sample deficient in activation competent FXI is indicative of a NASP which is capable of enhancing blood coagulation in dependence on FXI.
    • 在需要增强血液凝固的受试者中增强因子XI依赖性血液凝固的方法,包括向受试者施用治疗有效量的包含非抗凝血剂硫酸化多糖(NASP)的组合物。 一种在需要增强血液凝固的受试者中增强因子XI依赖性血液凝固的方法,包括:(i)选择对于因子XI不缺乏的受试者; 和(ii)将治疗有效量的包含非抗凝血剂硫酸化多糖(NASP)的组合物给予所述受试者,其中所述NASP以因子XI依赖性方式增强凝血。 一种鉴定能够根据FXI增强血液凝固的非抗凝血硫酸化多糖(NASP)的方法,所述方法包括:a)将包含活化能力FXI的血液或血浆样品与包含硫酸化多糖的组合物混合并测量 血液或血浆样品的凝血或凝血酶生成参数; b)将缺乏活化能力的FXI的相应血液或血浆样品与包含硫酸化多糖的组合物组合并测量血液或血浆样品的凝固或凝血酶生成参数; 和c)将在步骤(a)和(b)中确定的血液或血浆样品的凝血或凝血酶生成参数彼此比较,其中血样的凝固时间减少或峰值凝血酶增加或降低 在包含活化能力FXI的血浆样品的峰值时间与血液样品或峰值凝血酶的凝固时间相比较或缺乏活化能力的血浆样品的峰值时间FXI表明NASP能够依赖于 FXI。