Claims for Patent: 9,345,773

Summary for Patent: 9,345,773

Title:	PVA-boronic acid containing copolymer compositions for protein delivery
Abstract:	Provided herein are phenylboronate containing co-polymers (PCC), compositions containing PCC and polyvinyl alcohol (PVA), such compositions further including proteins, methods of making these compositions by water in oil polymerization, and methods of using the protein containing compositions for releasing proteins. Such phenylboronate containing co-polymers are of Formula I: where m, n, p, x, R.sup.1-R.sup.5, L, X.sup.1 and X.sup.2 are defined in the application.
Inventor(s):	Kumar; Ashok (Jammu, IN), Reddy; Rachamalla Maheedhar (Kadapa-Dt, IN)
Assignee:	INDIAN INSTITUTE OF TECHNOLOGY KANPUR (Kanpur, IN)
Application Number:	13/880,299
Patent Claims:	1. A particulate comprising a composition comprising polyvinyl alcohol and a co-polymer; wherein the co-polymer is: poly-((acrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((acrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); or poly-((N,N-dimethylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); wherein, m is from 150000 to 220000; n is from 4000 to 6000; and p is from 3500 to 5500. 2. The particulate of claim 1, wherein the particulate is a sphere. 3. The particulate of claim 2, wherein the sphere has a diameter from 200 nm to 50 .mu.m. 4. A method of preparing a particulate, the method comprising: adding separately to an oil phase, a polyvinyl alcohol, a radical initiator, a compound of Formula II, a compound of Formula III, and a compound of Formula IV to form a mixture; and polymerizing the mixture to form a particulate of: poly-((acrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((acrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p; or poly-((N,N-dimethylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); where m is from 150000 to 220000; n is from 4000 to 6000; and p is from 3500 to 5500; wherein: ##STR00005## wherein L is a bond or --CONH-- wherein the nitrogen is attached to the substituted phenyl group; R.sup.1 and R.sup.2 are each H or each methyl, or R.sup.1 is H and R.sup.2 is iso-propyl; R.sup.3 and R.sup.4 are each methyl; R.sup.5 is H; x is 2; and either X.sup.1 is H and X.sup.2 is --B(OH).sub.2, or X.sup.1 is --B(OH).sub.2 and X.sup.2 is H. 5. A method of releasing a protein from a particulate, the method comprising contacting the particulate with a monosaccharide to release the protein; wherein the particulate comprises a composition comprising a protein, polyvinyl alcohol, and a co-polymer; the co-polymer is: poly-((acrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(N-acryloyl-3-aminophenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((N-isopropylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); poly-((acrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p; or poly-((N,N-dimethylacrylamide).sub.m-co-(4-vinylphenylboronic acid).sub.n-co-(N,N-dimethylaminoethylmethacrylate).sub.p); wherein, m is from 150000 to 220000; n is from 4000 to 6000; p is from 3500 to 5500; and the protein comprises a hormone, a growth factor, a cytokine, a soluble receptor, an enzyme, a monoclonal antibody, a peptide vaccine, or bovine serum albumin. 6. The particulate of claim 1 further comprising a protein, wherein the protein comprises a hormone, a growth factor, a cytokine, a soluble receptor, an enzyme, a monoclonal antibody, a peptide vaccine, or bovine serum albumin. 7. The particulate of claim 6, wherein the protein comprises insulin, vasopressin, calcitonin, growth hormone, luteinizing hormone releasing hormone, erythropoietin, insulin-like growth factor, epidermal growth factor, nerve growth factor, IL-1.alpha., interferon .alpha., interferon .gamma., interleukin 2, tumor necrosis factor receptor, asparaginase, prolidase, lysozyme, streptokinase, urokinase, group B streptococcus antigen vaccine, tetanus toxoid, diphtheria toxoid, encephalitis virus vaccine, or bovine serum albumin (BSA). 8. The particulate of claim 7, wherein the protein is bovine serum albumin (BSA). 9. The method of claim 5, wherein the protein comprises insulin, vasopressin, calcitonin, growth hormone, luteinizing hormone releasing hormone, erythropoietin, insulin-like growth factor, epidermal growth factor, nerve growth factor, IL-1.alpha., interferon .alpha., interferon .gamma., interleukin 2, tumor necrosis factor receptor, asparaginase, prolidase, lysozyme, streptokinase, urokinase, group B streptococcus antigen vaccine, tetanus toxoid, diphtheria toxoid, encephalitis virus vaccine, or bovine serum albumin (BSA). 10. The method of claim 9 wherein the protein is bovine serum albumin (BSA).

Details for Patent 9,345,773

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Microbix Biosystems Inc.	KINLYTIC	urokinase	For Injection	021846	01/16/1978		2031-06-23
Recordati Rare Diseases, Inc.	ELSPAR	asparaginase	For Injection	101063	01/10/1978		2031-06-23