Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Glucosamine modified poly (ethylene glycol) diacrylate (PEGDA) hydrogel, preparation method and application thereof

A technology of glucosamine hydrochloride and glucosamine, which is applied in medical science, prostheses, etc., can solve the problems of lack of biological activity and cell identification signals, unfavorable cell-specific gene activation, etc., to achieve large-scale production, good biological Compatibility, the effect of simple process

Active Publication Date: 2010-10-20
SOUTH CHINA UNIV OF TECH
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PEG is a biomedical material approved by the US FDA for clinical use. Although PEG diacrylate gel is a biocompatible material, it lacks biological activity and cell recognition signals, which is not conducive to cell-specific gene activation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Glucosamine modified poly (ethylene glycol) diacrylate (PEGDA) hydrogel, preparation method and application thereof
  • Glucosamine modified poly (ethylene glycol) diacrylate (PEGDA) hydrogel, preparation method and application thereof
  • Glucosamine modified poly (ethylene glycol) diacrylate (PEGDA) hydrogel, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation of glucosamine modified PEGDA hydrogel comprises the following steps:

[0041] (1) Synthesis of polyethylene glycol diacrylate

[0042] Weigh 50 grams of polyethylene glycol (number average molecular weight 4000), dissolve it in 700ml toluene, heat to reflux, remove the water content in the raw material with a water separator, cool to room temperature, under the protection of high-purity nitrogen, add 0.1 Mole of anhydrous triethylamine, 0.1 mole of acryloyl chloride was added dropwise, and stirred at 35°C for 24 hours. Remove the precipitate generated by the reaction by filtration, add 300 ml of diethyl ether to the filtrate and place it in a refrigerator at 4°C to precipitate a white precipitate, filter it, redissolve the precipitate in 100ml of benzene, add 200 ml of ether to the refrigerator at 4°C, precipitate a white precipitate, and repeat the filtration and dissolved twice, and the resulting white precipitate was dried in a vacuum oven at 35°C f...

Embodiment 2

[0048] (1) Synthesis of polyethylene glycol diacrylate

[0049] Weigh 50 grams of polyethylene glycol (number-average molecular weight 10000), dissolve it in 700ml toluene, heat to reflux, remove the water content in the raw material with a water separator, cool to room temperature, under the protection of high-purity nitrogen, add 0.04 Mole of anhydrous triethylamine, 0.04 mole of acryloyl chloride was added dropwise, and stirred at 35°C for 24 hours. Remove the triethylamine salt generated by the reaction by filtration, add 300 ml of ether to the filtrate and place it in a refrigerator at 4°C, a white precipitate precipitates, filter, redissolve the precipitate in 100ml of benzene, add 200ml of ether and place it in a refrigerator at 4°C, a white precipitate precipitates, Filtration and dissolution were repeated twice, and the resulting white precipitate was dried in a vacuum oven at 35°C for 24 hours.

[0050] (2) Synthesis of N-acryloylglucosamine: Dissolve 8.6g of glucos...

Embodiment 3

[0056] (1) Synthesis of polyethylene glycol diacrylate

[0057] Weigh 50 grams of polyethylene glycol (number-average molecular weight 10000), dissolve it in 700ml toluene, heat to reflux, remove the water content in the raw material with a water separator, cool to room temperature, under the protection of high-purity nitrogen, add 0.04 Mole of anhydrous triethylamine, 0.04 mole of acryloyl chloride was added dropwise, and stirred at 35°C for 24 hours. Remove the triethylamine salt generated by the reaction by filtration, add 300 ml of ether to the filtrate and place it in a refrigerator at 4°C, a white precipitate precipitates, filter, redissolve the precipitate in 100ml of benzene, add 200ml of ether and place it in a refrigerator at 4°C, a white precipitate precipitates, Filtration and dissolution were repeated twice, and the resulting white precipitate was dried in a vacuum oven at 35°C for 24 hours.

[0058] (2) Synthesis of N-acryloylglucosamine: Dissolve 8.6g of glucos...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a glucosamine modified poly (ethylene glycol) diacrylate (PEGDA) hydrogel, a preparation method and application thereof. The glucosamine modified poly (ethylene glycol) diacrylate hydrogel contains 10-30 percent of poly (ethylene glycol) diacrylate, 1.0-10mM of acryloyl or propenyl glucosamine and 0.03-0.1 percent of initiating agent I2959. The preparation method comprises the steps of: preparing the PEGDA by using polyethyleneglycol as a basic material; preparing the acryloyl or propenyl glucosamine by using glucosamine hydrochloride as a raw material; and preparing a water solution or PBS (Poly (Butadiene-Styrene) solution by using the acryloyl or propenyl glucosamine and the initiating agent I2959 in a certain proportion, and can be cured into the hydrogel after being irradiated by ultraviolet with 365nm wavelength. The hydrogel can be used for tissue repair of clinical medicine, has simple preparation process, can realize in situ injection forming, meet the requirement on minimally invasive procedure, and has better application prospect and scientific significance.

Description

technical field [0001] The invention relates to a modified biological material and its preparation technology, in particular to a glucosamine modified polyethylene glycol diacrylate hydrogel with good biocompatibility and biological activity, its preparation method and application. Background technique [0002] Glucosamine is a structural unit of glycosaminoglycan, hyaluronic acid, which constitutes the extracellular matrix of cartilage. Glucosamine hydrochloride or sulfate, as a clinical drug for the treatment of osteoarthritis, can relieve the pain of patients and reduce the narrowing of the joint cavity. Although its pharmacological effects are still unclear, in vitro experiments have shown that a certain concentration (2mM added to the medium) of glucosamine can promote the secretion of proteoglycan and collagen II in three-dimensional cultured chondrocytes, and can up-regulate the expression of TGFb-1 in chondrocyte mRNA ; Can promote three-dimensional culture of embry...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08G65/48A61L27/16A61L27/52
Inventor 王迎军任力王群芳赵连娜夏欢
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com