Hydrogel Cell Retention via Covalent Bonding
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Solution Overview
Problem
Conventional composite materials encapsulating cells in hydrogels for tissue repair do not effectively retain cells at the injured site, leading to insufficient tissue regeneration due to physical loading, which results in the release of cells and growth factors outside the gel.
Innovation Solution
A biomaterial comprising a water-soluble polymer with reactive functional groups that covalently bind to cells having tissue-regenerating capacity, forming a hydrogel state, thereby retaining cells at the affected site for effective tissue repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cells are physically loaded in hydrogel for tissue repair, then cells can be delivered to injured tissue, but cells and growth factors are released outside the gel leading to insufficient regeneration effect
Solution Approach 1:
The patent replaces physical loading mechanisms with chemical bonding. Cells are covalently bound to the hydrogel network through reactive functional groups on cell surfaces interacting with polymer chains, transforming the retention mechanism from physical confinement to chemical attachment. This ensures cells remain anchored at the injured site while maintaining viability and releasing growth factors for effective tissue regeneration.
Solution Approach 2:
The patent creates a composite hydrogel system combining water-soluble polymer chains with cell surface functional groups. The hydrogel network integrates both polymer matrix and biologically active cell components, forming a synergistic composite material that simultaneously provides structural support, cell retention, and regenerative functionality for enhanced tissue repair.
2Reliability
If conventional hydrogel encapsulation is used, then cells can be protected, but the gel structure does not provide sufficient anchoring for cells and growth factors
Solution Approach 1:
The patent replaces mechanical encapsulation with chemical anchoring. Reactive functional groups on cell surfaces form covalent bonds with polymer chains in the hydrogel network, creating strong chemical anchoring that surpasses physical encapsulation. This chemical bonding provides robust retention for both cells and growth factors while maintaining gel integrity and protective functions.
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 biomaterial effectively retains cells at the injured site, promoting efficient tissue regeneration by maintaining cells within the hydrogel, which enhances the repair process and maintains cell viability over time.
Implementation Method 1
a cell having tissue-regenerating capacity and having, on the surface thereof, a reactive functional group B that can covalently bind to the reactive functional group A
Data Source
AI summary
The present provides a biomaterial for repairing biological tissues, the biomaterial comprising: a water-soluble polymer having a reactive functional group A; and a cell having tissue-regenerating capacity and having, on the surface thereof, a reactive functional group B that can covalently bind to the reactive functional group A, wherein the biomaterial presents a hydrogel state when the reactive functional group A covalently binds to the reactive functional group B. Thus, the present invention can provide a biomaterial for repairing biological tissues that can exert excellent effect in repairing biological tissues by utilizing a hydrogel encapsulating cells having tissue-regenerating capacity.