Biocompatible material and methods for making and using thereof

Patent metadata

Field	Value
Publication number	US-12029753-B2
Application number	US-201816648105-A
Country	US
Kind code	B2
Filing date	Sep 18, 2018
Priority date	Sep 19, 2017
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

The present disclosure provides compositions comprising one or more polymers capable of forming a hydrogel and methods for making and using the same. More specifically, the present disclosure provides compositions comprising one or more polymers capable of forming a hydrogel with prolonged mucosal retention, and methods for making and using the same.

First claim

What is claimed is:

1. A composition comprising two or more hydrogel forming polymers wherein, before they are added to the composition, at least two hydrogel forming polymers have an intrinsic viscosity [η] of at least 3 dL/g in said composition as measured by a Ubbelohde viscometer, and wherein the concentration C T of each of said two or more hydrogel forming polymers in said composition before they are added to the composition and prior to combining and mixing them to form a hydrogel is about 0.3 mg/ml to about 5 mg/ml,
wherein said two or more hydrogel forming polymers comprises a first polymer derivative and a second polymer derivative, wherein said first wherein said first polymer derivative comprises a first modification and said second polymer derivative comprises a second modification,
wherein said first modification is different from said second modification, and said first polymer derivative is capable of reacting with said second polymer derivative to form a hydrogel,
wherein said first modification and said second modification are each independently selected from the group consisting of an acrylate, a maleimide, a vinylsulfone, a N-hydroxysuccinimide, an aldehyde, a ketone, a carbodiimide, a carbonate, an iodoacetyl, a mercaptonicotinamide, a quinone, a thiol, an amine, and any combinations thereof,
wherein said hydrogel that is formed by combining said two or more hydrogel forming polymers has at least one of the following:
1) A storage modulus G′ that is no more than about 10.0 Pa, as measured in a dynamic oscillatory shear test;
2) A complex viscosity that is no more than about 0.2 Pa·s as measured in a dynamic oscillatory shear test at a frequency of more than about 100 rad/s; and
3) A yield strain of at least about 10%, as measured in a dynamic oscillatory strain sweep test; wherein said two or more hydrogel forming polymers is selected from the group consisting of a hyaluronic acid, a derivative thereof, and any combinations thereof.

2. The composition according to claim 1 , wherein at least some of said two or more hydrogel forming polymers are comprised in said composition in a hydrogel formed.

3. The composition according to claim 1 , wherein said two or more hydrogel forming polymers are hydrophilic and/or water soluble.

4. The composition according to claim 1 , having at least one of the following:
1) A mass ratio between said first polymer derivative and said second polymer derivative in said composition is from about 10:1 to about 1:10,
2) A molar ratio between said first polymer derivative and said second polymer derivative in said composition is from about 10:1 to about 1:10,
3) A volume ratio between said first polymer derivative and said second polymer derivative in said composition is from about 10:1 to about 1:10, and
4) said first polymer derivative has a first degree of modification (DM), said second polymer derivative has a second DM, and a ratio between said first DM and said second DM is from about 10:1 to about 1:10.

5. The composition according to claim 1 , wherein said two or more hydrogel forming polymers are hyaluronic acid derivatives, said first polymer derivative is a hyaluronic acid modified with one or more vinylsulfone groups, said second polymer derivative is a hyaluronic acid modified with one or more thiol groups, and wherein said first polymer derivative is capable of reacting with said second polymer derivative to form said hydrogel.

6. The composition according to claim 1 , wherein said composition does not comprise any crosslinker different from said two or more hydrogel forming polymers.

7. A hydrogel formed by the composition according to claim 1 .

8. The hydrogel according to claim 7 , wherein said hydrogel has a loss modulus G″ that is no more than about 100% of its storage modulus G′, as measured in a dynamic oscillatory shear test.

9. A method for generating a hydrogel, comprising:
a) providing the composition according to claim 1 ; and
b) mixing polymer of said first polymer derivative and said second polymer derivative at a ratio of about 1:1, the concentration (C) of said polymers is about 0.3-0.5 mg/mL.

Assignees

• Univ Hong Kong Science & Tech

Inventors

• Chau Ying
• Yu Yu

Classifications

• C08J2305/08

  Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title

• C08J2389/00

  Characterised by the use of proteins; Derivatives thereof · CPC title

• C08J2333/14

  of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen · CPC title

• C08J2333/02

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• C08J2305/00

  Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00 · CPC title