Biodegradable triblock copolymers, synthesis methods therefore, and hydrogels and biomaterials made there from
First Claim
1. A drug delivery system, comprising:
- a hydrogel formed from cyclodextrin and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate); and
a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel.
4 Assignments
0 Petitions
Accused Products
Abstract
A drug delivery system that includes a hydrogel formed from cyclodextrin and an amphiphilic copolymer that includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate), and a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel. In one preferred embodiment of the invention, the A polymer block is poly(ethylene oxide) (PEO) and the B polymer block is poly[(R)-3-hydroxybutyrate] (PHB), and the copolymer is the triblock ABA copolymer PEO-PHB-PEO. A method of synthesizing the amphiphilic triblock copolymer is also provided.
-
Citations
103 Claims
-
1. A drug delivery system, comprising:
-
a hydrogel formed from cyclodextrin and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate); and
a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A drug delivery system, comprising:
-
a hydrogel formed from cyclodextrin and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising poly(ethylene oxide) and a B polymer block comprising poly(hydroxybutyrate); and
a therapeutically effective amount of at least one therapeutic agent intimately contained within the hydrogel. - View Dependent Claims (37, 38)
-
- 39. A hydrogel comprising cyclodextrin and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate).
-
47. A process for synthesizing an amphiphilic ABA triblock copolymer, including poly(ethylene oxide) as an A block polymer and poly(3-hydroxyalkanoate) as a B block polymer, the process comprising:
-
converting poly(3-hydroxyalkanoate) into telechelic poly(3-hydroxyalkanoate)-diol with a lower molecular weight;
producing methoxy-poly(ethylene oxide)-monocarboxylic acid from methoxy-poly(ethylene oxide); and
coupling the poly(3-hydroxyalkanoate)-diol with the methoxy-poly(ethylene oxide)-monocarboxylic acid using 1,3-dicyclohexylcarbodiimide to yield the ABA triblock copolymer. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56)
-
- 57. A process for forming a hydrogel drug delivery system, comprising combining cyclodextrin, a therapeutically effective amount of at least one therapeutic agent in an aqueous base fluid, and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate).
-
59. A method of treating a human or other mammal in need thereof with at least one therapeutic agent, comprising:
administering the at least one therapeutic agent in a drug delivery system, the drug delivery system comprising a hydrogel formed from cyclodextrin and an amphiphilic copolymer, wherein the copolymer includes an A polymer block comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate), wherein a therapeutically effective amount of the at least one therapeutic agent is intimately contained within the hydrogel. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
-
70. A drug delivery system, comprising:
-
micelles formed from an amphiphilic ABA copolymer, wherein the copolymer includes A polymer blocks comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate) selected from the group consisting of poly[(R)-3-hydroxybutyrate], poly[(R)-4-hydroxybutyrate], (S) enantiomers of each of such (R) enantiomers, racemic mixtures of such (S) and (R) enantiomers, and mixtures thereof; and
a therapeutically effective amount of at least one therapeutic agent intimately contained within the micelles. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91)
-
-
92. A method of treating a human or other mammal in need thereof with at least one therapeutic agent, comprising:
administering the at least one therapeutic agent in a drug delivery system, the drug delivery system comprising micelles formed from an amphiphilic ABA copolymer, wherein the copolymer includes A polymer blocks comprising a poly(alkylene oxide) and a B polymer block comprising a poly(hydroxyalkanoate) selected from the group consisting of poly[(R)-3-hydroxybutyrate], poly[(R)-4-hydroxybutyrate], (S) enantiomers of each of such (R) enantiomers, racemic mixtures of such (S) and (R) enantiomers, and mixtures thereof, wherein a therapeutically effective amount of the at least one therapeutic agent is intimately contained within the micelles. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103)
Specification