摘要:
Compositions and methods for the synthesis of hybrid streptokinase with fibrin binding domains based on gene fusion technology. Recombinant DNA methods have been used to fuse gene segments for streptokinase and for fibrin-binding domains and express the fused gene in prokaryotic microorganisms, and the respective expressed protein is subsequently obtained by biotechnologic fermentation for the purpose of use in clinical medicine.
摘要:
The present invention relates to a method and compound that is useful for targeting deposits of fibrin. The present invention is a compound that can be acted upon by the enzyme Factor XIIIa so that the compound is covalently bound to fibrin deposits in the body. The compound can be used to prepare diagnostic or therapeutic reagents that will then be bound to fibrin deposits. This can facilitate detection or treatment of the fibrin deposit or disease process anatomically associated with fibrin. The compound can be attached to a fibrinolytic protein by either chemical or recombinant DNA methods thereby making the protein specific for fibrin.
摘要:
A pharmaceutical composition which comprises a pharmaceutically acceptable carrier together with an in vivo fibrinolytic enzyme as defined herein wherein the catalytic site essential for fibrinolytic activity is blocked by a group which is removable by hydrolysis at a rate such that the pseudo-first order rate constant for hydrolysis is in the range 10- 6 sec -1 to 10 -3 sec -1 in isotonic aqueous media at pH 7.4 at 37°C; is useful in the treatment of venous thrombosis.
摘要:
A method of making N-terminal methionine free polypeptide in a recombinant microbial host cell and pharmaceutical compositions along with one or more pharmaceutical excipients for management of various therapeutic disorders. Specifically, the invention relates to the production of N-terminal methionine free Streptokinase or human growth hormone by co expression with a protease enzyme in E.coli.
摘要:
Disclosed is a method for purifying a lantibiotic from a crude or partially purified solution containing the lantibiotic. In preferred embodiments, the lantibiotic is nisin, although the common structural features of lantibiotics dictate the effectiveness of the disclosed purification methods for other members of the lantibiotic genus. The method includes the step of forming an incubation mixture comprising the solution containing the lantibiotic and a proteolytic enzyme, and incubating the mixture under conditions optimized for selective proteolytic activity.
摘要:
A vaccine for use to treat or prevent a disease in a vertebrate, the vaccine comprising an antigenic entity and a carrier, the antigenic entity being adapted to cause, following vaccination of the vertebrate with the vaccine, an immune response providing antibodies which inhibit a factor from a pathogen which directly or indirectly causes breakdown of protein in the vertebrate wherein said breakdown enhances growth of the pathogen. A vaccine against the streptokinase of Streptococcus uberis can be used to prevent mastitis in cattle.
摘要:
A size modified fibrinolytic enzyme, wherein the size of the enzyme is modified by covalent attachment of at least one large organic molecule to the enzyme.
摘要:
The present invention relates to a hybrid plasminogen activator comprising a polypeptide bond union between streptokinase (SK), or modified forms of SK, or suitable parts thereof, which are capable of plasminogen (PG) activation, with fibrin binding regions of human fibronectin selected from the pair of fibrin binding domains 4 and 5, or domains 1 and 2, or modified forms thereof, to achieve various motifs for joining the fibrin binding domains with streptokinase or its modified forms, so that the hybrid plasminogen activator possesses the ability to bind with fibrin independently and also characteristically retains a plasminogen activation ability which becomes evident only after a pronounced duration, or lag, after exposure of the plasminogen activator to a suitable animal or human plasminogen; a method of producing the hybrid plasminogen activator and formulation comprising the said activator.