Claims for Patent: 4,609,546

Summary for Patent: 4,609,546

Title:	Long-acting composition
Abstract:	A composition wherein a physiologically active polypeptide or a glycoprotein of human origin, for instance, urokinase, kallikrein or leukocyte interferon, is coupled to a polyoxyethylene-polyoxypropylene copolymer. The composition is effective in the human body for a prolonged period of time.
Inventor(s):	Hiratani; Hajime (Sennan, JP)
Assignee:	Japan Chemical Research Co., Ltd. (Kobe, JP)
Application Number:	06/507,154
Patent Claims:	1. A long-acting composition which comprises a physiologically active polypeptide or glycoprotein of human origin coupled to a polyoxyethylene-polyoxypropylene copolymer having a molecular weight between about 1,000 and about 10,000 by means of a coupling agent capable of linking the terminal hydroxyl group of said copolymer with the amino group of said active substance. 2. A composition according to claim 1 wherein the physiologically active polypeptide or glycoprotein of human origin is human menopausal gonadotropin, human growth hormone, epidermal growth factor, nerve growth factor, colony formation stimulating factor, urokinase, plasminogen (PLG), kallikrein, interferon .alpha., interferon.beta., interferon.gamma., interleukin 1, interleukin 2. urinary trypsin inhibitor, urinary thiol protease inhibitor, placental arylsulfatase, urinary lysozyme or urinary asparaginase. 3. A composition according to claim 1 wherein the copolymer has a molecular weight of between about 1,000 and about 10,000 having at both ends thereof hydroxyl groups which may be substituted by an alkyl or acyl group. 4. A composition according to claim 1 wherein the copolymer has a polyoxyethylene- polyoxypropylene ratio from 4:16 to 256:54. 5. A composition according to claim 1 wherein the copolymer is a monomethylation product of a polyoxyethylene-polyoxypropylene copolymer having an ethylene oxide: propylene oxide: ethylene oxide ratio of 46:16:46 and having an average molecular weight of 5,000. 6. A composition according to claim 1 wherein the copolymer is an ethyoxy-polyoxyethylene-polyoxypropylene glycol having an average molecular weight of 3,400 and an ethylene oxide:proplyene oxide:ethylene oxide ratio of 15:30:19. 7. A composition according to claim 1 wherein the coupling agent contains at least one functional group capable of reacting with a hydroxyl group and at least one functional group capable of reacting with an amino group. 8. A composition according to claim 1 wherein the coupling agent is 2,4,6-trichloro-s-triazine, dibromosuccinic anhydride or maleic anhydride. 9. A long-acting composition which comprises a physiologically active polypeptide or glycoprotein of human origin selected from the group of human epidermal growth factor, urokinase, kallikrein and leukocyte interferon, coupled to a polyoxyethylene-polyoxypropylene copolymer having a molecular weight between about 1,000 and about 10,000, by means of a coupling agent capable of linking the terminal hydroxyl group of said copolymer with the amino group of said active substance. 10. A pharmaceutical composition useful for prolonging the effect of a physiologically active polypeptide or glycoprotein of human origin, comprised of a pharmaceutically effective prolonging amount of the long-acting composition of claim 1 and a pharmaceutically acceptable carrier. 11. A pharmaceutical composition useful for prolonging the effect of a physiologically active polypeptide or glycoprotein of human origin, comprised of a pharmaceutically effective prolonging amount of the long-acting composition of claim 2 and a pharmaceutically acceptable carrier. 12. A pharmaceutical composition useful for prolonging the effect of a physiologically active polypeptide or glycoprotein of human origin, comprised of a pharmaceutically effective prolonging amount of the long-acting composition of claim 9 and a pharmaceutically acceptable carrier. 13. A method for prolonging the effect of a physiologically active substance in the human body which comprises administering to said human body a pharmaceutically effective amount of the pharmaceutical composition of claim 10 which contains said physiologically active substance. 14. A method for prolonging the effect of a physiologically active substance in the human body which comprises administering to said human body a pharmaceutically effective amount of the pharmaceutical composition of claim 11 which contains said physiologically active substance. 15. A method for prolonging the effect of a physiologically active substance in the human body which comprises administering to said human body a pharmaceutically effective amount of the pharmaceutical composition of claim 12 which contains said physiologically active substance.

Details for Patent 4,609,546

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Microbix Biosystems Inc.	KINLYTIC	urokinase	For Injection	021846	01/16/1978		2003-09-02
Recordati Rare Diseases, Inc.	ELSPAR	asparaginase	For Injection	101063	01/10/1978		2003-09-02