摘要:
The present invention provides von Willebrand Factor-polymer conjugates and Factor VIII-polymer conjugates, each having a releasable linkage. Methods of making conjugates, methods for administering conjugates, are also provided.
摘要:
A composition comprising a conjugate comprising a native Factor VIII modified with a water soluble polymer bound thereto, said water soluble polymer attached to the modified Factor VIII via an oxidised carbohydrate moiety.
摘要:
A water soluble polymer, in particular polysialic acid (PSA) or a modified PSA (mPSA), is conjugated to an oxidized carbohydrate moiety of a glycoprotein other than a blood coagulation protein or to a ganglioside or drug delivery system by contacting the oxidized carbohydrate moiety with the water soluble polymer, wherein said water soluble polymer contains an aminooxy group and an oxime linkage is formed between the oxidized carbohydrate moiety and the aminooxy group on the water soluble polymer or wherein said water soluble polymer contains a hydrazide group and a hydrazone linkage is formed between the oxidized carbohydrate moiety and the hydrazide group on the water soluble polymer. Conjugates of aminooxy- or hydrazide-water soluble polymer, such as PSA and mPSA, are thus obtained in which the PSA or mPSA is attached via a carbohydrate moiety.
摘要:
Methods for determining molecular mass of at least 150 kDa of an analyte of interest using MALDI mass spectrometry in combination with a recombinant von Willebrand factor (rVWF) molecular weight marker are disclosed. More specifically, monomeric and multimeric rVWF are used for external and internal calibration of mass spectra applied for analytes having high molecular weights above 150 kDa.
摘要:
Disclosed herein are methods of determining polydispersity (PDI) and molecular mass distribution (MMD) of reactive PEG samples using mass spectrometry. More specifically, a mass spectrometry method called GEMMA is used to determine PDI and MMD of PEG samples which provides more accurate measurements for high molecular weight PEG samples than prior known MALDI-TOF analysis.
摘要:
The invention generally relates to methods of measuring cleaved von Willebrand factor (VWF) fragments. More specifically, the invention relates to methods of measuring the ability of a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS13) to cleave VWF in vivo. The invention also relates to methods of using various animal models which demonstrate ADAMTS13 activity similar to that of a human. The invention further relates to methods of measuring the cleavage products of rVWF in mammals, particularly in humans and in human plasma.
摘要:
The invention relates to the development of an animal model for testing various agents in the treatment of a clotting disorder. More specifically, the invention relates to the use of ultra-large molecular weight multimers of von Willebrand factor (VWF) in various mouse strains to induce thrombotic thrombocytopenic purpura (TTP)-like symptoms for the development of a mouse model of TTP. The invention also provides methods for generating such animal disease models and screening methods for identifying biologically active compounds which are effective in the treatment of TTP.
摘要:
The invention provides a kit for measuring the thrombin generation in a sample of a patient's blood or plasma, or in a sample of clotting factors. The kit contains lyophilized tissue factor/phospholipid-complex and a lyophilized mixture containing a thrombin-substrate and CaCl2. The invention also provides processes for preparing the reagents for the kit. The kit can be used in a method for measuring the thrombin generation in a sample, wherein it is possible to detect changes in thrombin generation kinetics, for example after administration of inhibitor bypassing agents to a patient who has developed inhibitors to an exogenous clotting factor such as Factor VIII.
摘要:
The invention relates to materials and methods of conjugating a water soluble fatty acid derivative to a therapeutic protein comprising contacting the therapeutic protein with an activated water soluble fatty acid derivative under conditions that allow conjugation.