Phenol-Modified ECM Hydrogel for Tissue Adhesion and Biocompatibility
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Solution Overview
Problem
Current methods for constructing artificial tissues lack effective biocompatible and biodegradable materials that can mimic the in-vivo microenvironment for cell proliferation and interaction, and fail to provide a suitable adhesive for tissue assembly and drug delivery.
Innovation Solution
A phenol derivative-modified, tissue-derived extracellular matrix is crosslinked to form a hydrogel with adhesive properties, allowing for cell adhesion, tissue assembly, and drug delivery, using oxidative crosslinking methods with oxidizing agents or basic conditions, and exhibiting biodegradability and low cytotoxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used for constructing artificial tissues, then the construction process is simple, but the materials lack biocompatibility and inability to mimic in-vivo microenvironment
Solution Approach 1:
The patent combines tissue-derived extracellular matrix with phenol derivatives to create a composite hydrogel material. This composite approach integrates the biocompatibility of natural ECM with the adhesive and structural properties of phenol-modified components, achieving both high biocompatibility and functional performance in artificial tissue construction
Solution Approach 2:
The patent modifies the extracellular matrix through phenol derivative conjugation, changing the chemical parameters of the material. This modification introduces catechol groups that enable oxidative crosslinking and enhance adhesive properties, transforming the material from simple ECM to a functionally enhanced composite with improved biocompatibility and tissue-mimicking capabilities
2Reliability
If simple cell aggregates are formed, then the construction process is easy, but the structures lack cell-proliferating potential and tissue functionality
Solution Approach 1:
The patent creates localized microenvironments within the hydrogel structure that support cell proliferation and differentiation. The phenol-modified ECM provides specific local conditions including adhesive sites and structural organization that mimic in-vivo tissue microenvironments, enabling cells to exhibit tissue-like behaviors and proliferation potential rather than remaining as simple aggregates
Solution Approach 2:
The patent constructs hierarchical tissue structures where organoids are embedded within the hydrogel matrix, which itself is composed of modified ECM networks. This nested organization allows cell aggregates to be incorporated into a larger, more complex tissue architecture that provides the necessary microenvironment for cell-proliferating potential and tissue functionality
3Strength
If non-adhesive materials are used for tissue assembly, then the material preparation is simple, but the tissues lack proper adhesion and structural integrity
Solution Approach 1:
The patent utilizes oxidative crosslinking of phenol derivatives to create strong adhesive bonds in the hydrogel structure. The oxidation process forms crosslinked networks that provide structural integrity and strong adhesion between tissue components, transforming the material from non-adhesive to highly adhesive with enhanced mechanical strength
Solution Approach 2:
The phenol derivatives act as intermediary molecules that bridge the natural extracellular matrix components. These intermediaries provide crosslinking sites and adhesive functional groups that connect ECM molecules to each other and to cellular components, enabling strong adhesion and structural integrity while maintaining the natural ECM framework
4Reliability
If biodegradable materials are used, then the materials are biocompatible, but the structural stability over time is reduced
Solution Approach 1:
The patent modifies the degradation parameters of the extracellular matrix through phenol derivative conjugation. The crosslinked structure created by oxidation slows down degradation kinetics while maintaining biodegradability, allowing the material to retain structural stability over extended periods yet still degrade appropriately for tissue regeneration and replacement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hydrogel composition promotes hemostasis, blood coagulation, cell differentiation, and drug delivery, enabling the formation of tissue structures with high biocompatibility and applicability in various medical applications, including cell transplantation and tissue regeneration.
Implementation Method 1
the crosslinking may be oxidative crosslinking, and the oxidative crosslinking may be performed through at least one of a reaction by treatment with an oxidizing agent, a reaction under basic conditions, and natural oxidation
Implementation Method 2
the adhesiveness may be caused by at least one of a nucleophilic covalent bond, a hydrogen bond, a hydrophobic interaction, and a pi-pi interaction with the modified phenol derivative
Implementation Method 3
exhibiting biodegradability and low cytotoxicity
Data Source
AI summary
A phenol derivative-modified, tissue-derived extracellular matrix derivative for construction of artificial tissues. A hydrogel composition and a hydrogel prepared therefrom exhibit various effects such as hemostasis, blood coagulation acceleration, cell transplantation, drug delivery, cell differentiation promotion, etc. and thus can be applied to single or composite uses. Furthermore, the present invention is excellent in biocompatibility due to its biodegradability and being almost free of cytotoxicity, thus exhibiting very high applicability. In addition, a tissue structure including a single type or multiple types of cells can be formed through the cell-proliferating potential and adhesion of the hydrogel and can better simulate in-vivo microenvironments.