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IDENTIFICATION, PRODUCTION AND USE OF STAPHYLOKINASE DERIVATIVES WITH REDUCED IMMUNOGENICITY AND/OR REDUCED CLEARANCE
IDENTIFICATION, PRODUCTION AND USE OF STAPHYLOKINASE DERIVATIVES WITH REDUCED IMMUNOGENICITY AND/OR REDUCED CLEARANCE
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机译:免疫原性和/或清除率降低的葡萄球菌激酶衍生物的鉴定,生产和使用
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摘要
Methods for the identification, production and use of staphylokinase derivatives characterized by a reduced immunogenicity after administration in patients and that can be administered by a single bolus injection. The derivatives of the invention are obtained by preparing a DNA fragment comprising at least part of the coding sequence of staphylokinase; performing in vitro site-directed mutagenesis on the DNA fragment; cloning the mutated DNA fragment in a suitable vector; transforming a suitable host cell with the vector; culturing the host cell under conditions suitable for expressing the DNA fragment; purifying the staphylokinase derivative and chemically modifying Cys residues with thiol-directed polyethylene glycol. The invention also relates to pharmaceutical compositions comprising at least one of the staphylokinase derivatives according to the invention together with a suitable excipient, for treatment of arterial thrombosis.
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