发明名称 |
Staphylokinase derivatives |
摘要 |
A method for producing the derivatives of the invention by preparing a DNA fragment comprising at least the part of the coding sequence of staphylokinase that provides for its biological activity; performing in vitro site-directed mutagenesis on the DNA fragment to replace one or more codons for wild-type amino acids by a codon for another amino acid; cloning the mutated DNA fragment in a suitable vector; transforming or transfecting a suitable host cell with the vector; and culturing the host cell under conditions suitable for expressing the DNA fragment. Preferably the DNA fragment is a 466 bp EcoRI-HINDIII fragment of the plasmid pMEX602SAK, the in vitro site-directed mutagenesis is performed by an oligonucleotide-directed mutagenesis system using the plasmid pMa/c and the repair deficient E. coli strain WK6MutS, and the mutated DNA fragment is cloned in E. coli strain-WK6. 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.
|
申请公布号 |
US5695754(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19950371505 |
申请日期 |
1995.01.11 |
申请人 |
LEUVEN RESEARCH & DEVELOPMENT VZW;COLLEN, DESIRE |
发明人 |
COLLEN, DESIRE |
分类号 |
A61K38/00;C07K14/31;(IPC1-7):A61K38/48;C12N9/52 |
主分类号 |
A61K38/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|