Responsive microgel and methods related thereto
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Abstract
A responsive microgel is provided which responds volumetrically and reversibly to a change in one or more aqueous conditions selected from the group consisting of (temperature, pH, and ionic conditions) comprised of an ionizable network of covalently cross-linked homopolymeric ionizable monomers wherein the ionizable network is covalently attached to an amphiphilic copolymer to form a plurality of ‘dangling chains’ and wherein the ‘dangling chains’ of amphiphilic copolymer form immobile micelle-like aggregates in aqueous solution. A responsive microgel is further provided that comprises at least one therapeutic entity and delivers a substantially linear and sustained release of the therapeutic entity under physiological conditions.
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Citations
20 Claims
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1-3. -3. (canceled)
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4. A responsive microgel which comprises:
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an ionizable network of covalently cross-linked homopolymeric ionizable monomers wherein the ionizable network is covalently attached to an amphiphilic copolymer to form a plurality of ‘
dangling chains’ and
wherein the ‘
dangling chains’
of amphiphilic copolymer form immobile aggregates in aqueous solution;
and at least one therapeutic entity. - View Dependent Claims (5, 6, 7, 8, 17, 18, 19, 20)
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9-16. -16. (canceled)
Specification