IP Library › Granted Patent US 12,168,719
Granted Patent B2
US 12,168,719 · App. 16/986,507 · Granted Dec 17, 2024

Composition of thermosensitive hydrogels having altered reversible sol-gel transition property, and use thereof

Inventors: Soo Chang Song (Seoul, KR); Bo-Bae Seo (Seoul, KR)
Assignee: Nexgel Biotech Co. Ltd
C08G79/025A61L27/18A61L27/52B33Y70/10B33Y80/00C08G2210/00
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,168,719
App. No.
16/986,507
Granted
Dec 17, 2024
Kind
B2
Abstract

The present invention relates to a thermosensitive hydrogel composition, which while comprising an amino acid ester, polyethylene glycol, and a functional group for the introduction of a functional moiety at an end thereof at a predetermined ratio, comprises a polyphosphazene-based polymer having a controlled length and a content of polyethylene glycol contained therein, in which a reversible sol-gel transition character is altered; a medical polymer hydrogel comprising the polyphosphazene-based polymer; or an ink composition for 3D printing.

Claims (30)

1. A composition, comprising:

an aqueous solvent;

a polyphosphazene-based polymer selected from the group consisting of:

poly[(isoleucine ethyl ester) 1.45 (aminomethoxypolyethylene glycol 750) 0.32 (aminoethanol) 0.23 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.70 (aminomethoxypolyethylene glycol 1000) 0.20 (aminoethanol) 0.10 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.48 (aminomethoxypolyethylene glycol 750) 0.33 (aminoethylsuccinate) 0.19 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.70 (aminomethoxypolyethylene glycol 1000) 0.20 (aminoethylsuccinate) 0.10 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.38 (aminomethoxypolyethylene glycol 750) 0.38 (aminoethylglutarate) 0.24 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.61 (aminomethoxypolyethylene glycol 1000) 0.22 (aminoethylglutarate) 0.17 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.48 (aminomethoxypolyethylene glycol 750) 0.34 (aminoethylglutaratebeta-cyclodextrin) 0.18 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.51 (aminomethoxypolyethylene glycol 750) 0.25 (aminoethyladipate) 0.24 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.40 (aminomethoxypolyethylene glycol 750) 0.30 (aminoethylsulfate) 0.30 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.40 (aminomethoxypolyethylene glycol 750) 0.30 (aminoethylmethacrylate) 0.30 phosphazene] n ,

poly[(isoleucine ethyl ester) 1.55 (aminomethoxypolyethylene glycol 750) 0.38 (aminoethylsuccinateimidazole) 0.07 phosphazene] n , and

poly[(isoleucine ethyl ester) 1.51 (aminomethoxypolyethylene glycol 750) 0.40 (aminoethylsuccinateCRRRRHHHHHHGGGGGRGDS) 0.09 phosphazene] n ,

wherein n is an integer of 3 to 100,000,

wherein “CRRRRHHHHHHGGGGGRGDS” of the poly[(isoleucine ethyl ester) 1.51 (aminomethoxypolyethylene glycol 750) 0.40 (aminoethylsuccinateCRRRRHHHHHHGGGGGRGDS) 0.09 phosphazene] n is an amino acid sequence.

2. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.45 (aminomethoxypolyethylene glycol 750) 0.32 (aminoethanol) 0.23 phosphazene] n .

3. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.70 (aminomethoxypolyethylene glycol 1000) 0.20 (aminoethanol) 0.10 phosphazene] n .

4. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.48 (aminomethoxypolyethylene glycol 750) 0.33 (aminoethylsuccinate) 0.19 phosphazene] n .

5. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.70 (aminomethoxypolyethylene glycol 1000) 0.20 (aminoethylsuccinate) 0.10 phosphazene] n .

6. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.38 (aminomethoxypolyethylene glycol 750) 0.38 (aminoethylglutarate) 0.24 phosphazene] n .

7. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.61 (aminomethoxypolyethylene glycol 1000) 0.22 (aminoethylglutarate) 0.17 phosphazene] n .

8. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.48 (aminomethoxypolyethylene glycol 750) 0.34 (aminoethylglutarate beta-cyclodextrin) 0.18 phosphazene] n .

9. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.51 (aminomethoxypolyethylene glycol 750) 0.25 (aminoethyladipate) 0.24 phosphazene] n .

10. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.40 (aminomethoxypolyethylene glycol 750) 0.30 (aminoethylsulfate) 0.30 phosphazene] n .

11. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.40 (aminomethoxypolyethylene glycol 750) 0.30 (aminoethylMethacrylate) 0.30 phosphazene] n .

12. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.55 (aminomethoxypolyethylene glycol 750) 0.38 (aminoethylsuccinateimidazole) 0.07 phosphazene] n .

13. The composition of claim 1 , wherein the polyphosphazene-based polymer is poly[(isoleucine ethyl ester) 1.51 (aminomethoxypolyethylene glycol 750) 0.40 (aminoethylsuccinateCRRRRHHHHHHGGGGGRGDS) 0.09 phosphazene] n .

14. The composition of claim 1 , further comprising at least one selected from the group consisting of a drug, cells, nanoparticles, and microparticles.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 28, 2023
From: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
To: NEXGEL BIOTECH CO., LTD
Reel/Frame 065064/0229 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 20, 2020
From: SONG, SOO CHANG; SEO, BO-BAE
To: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Reel/Frame 053557/0151 →
Priority Claims (1)
KR 10-2019-0156759 · Nov 29, 2019 · national
Continuity (1)
Related Publication 20210163691A1 · Jun 3, 2021