Claims for Patent: 6,251,388

Summary for Patent: 6,251,388

Title:	Utilization of Wolinella succinogenes asparaginase to treat diseases associated with asparagine dependence
Abstract:	Described herein are methods for producing recombinant forms of asparaginase derived from Wolinella succinogenes. In addition, methods for covalent modification of proteins, including asparaginases, by acylation are also provided. Certain embodiments provide for epitopic-labeling of the amino terminus of W. succinogenes asparaginase. Additional embodiments concern methods for the therapeutic utilization of the native, homotetrameric form of W. succinogenes asparaginase, as well as the use of epitopically-labeled or non-epitopically-labeled recombinant W. succinogenes asparaginase (or a covalently modified analog thereof) in the therapeutic treatment of malignant and non-malignant hematological disease and other diseases where asparagine depletion or deprivation would be efficacious or which respond to asparagine depletion or deprivation, as well as their potential utilization in the therapeutic treatment of autoimmune diseases such as rheumatoid arthritis, AIDS, and SLE.
Inventor(s):	Durden; Donald L. (Glendale, CA)
Assignee:	Childrens Hospital Los Angeles (Los Angeles, CA)
Application Number:	09/094,435
Patent Claims:	1. Method of treating a disease which responds to asparagine depletion, the method comprising the step of administering to a patient having a disease which responds to asparagine depletion a therapeutically effective amount of a Wolinella succinogenes asparaginase, wherein said Wolinella succinogenes asparaginase is a recombinant enzyme and wherein the recombinant enzyme is an analog of asparaginase that comprises at least one covalent modification and wherein said covalent modification is acetylation that is accomplished by using one or more acyl halides. 2. A method according to claim 1 wherein the disease is a malignant disease. 3. A method according to claim 2 wherein the malignant disease is a malignant hematologic disease. 4. A method according to claim 3 wherein the malignant disease is selected from the group consisting of a lymphoma, a leukemia, and a myeloma. 5. A method according to claim 4 wherein the malignant hematologic disease is a chronic disease. 6. A method according to claim 5 wherein the chronic malignant hematologic disease is in an acute phase. 7. A method according to claim 1 wherein the disease is a non-malignant disease. 8. A method according to claim 7 wherein the non-malignant disease is an autoimmune disease. 9. A method according to claim 8 wherein the autoimmune disease is selected from the group consisting of a rheumatoid arthritis, Systemic Lupus Erythematosus, and AIDS. 10. A method according to claim 1 wherein the patient is a mammal selected from the group consisting of bovine, canine, equine, feline, bovine, porcine, and primate animals. 11. A method according to claim 1 wherein the patient is human. 12. The method of claim 1, wherein said patient has been sensitized to other microbial enzymes by prior treatment. 13. The method of claim 1, wherein said one or more acyl halides are one or more acyl chlorides. 14. The method of claim 13, wherein said one or more acyl chlorides is acetyl chloride. 15. The method of claim 13, wherein said one or more acyl chlorides is butyryl chloride. 16. The method of claim 13, wherein said one or more acyl chlorides is hexanoyl chloride. 17. The method of claim 13, wherein said one or more acyl chlorides is decanoyl chloride.

Details for Patent 6,251,388

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Recordati Rare Diseases, Inc.	ELSPAR	asparaginase	For Injection	101063	01/10/1978		2017-06-09