Hybrid Hydrogel Scaffold with Tunable Stiffness for Disease Modeling
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Solution Overview
Problem
Hydrogels made only of decellularized extracellular matrix (dECM) lack robust mechanical properties, while fully synthetic hydrogels do not replicate the complex biochemical cues of dECM, making them inadequate for modeling diseases and regeneration effectively.
Innovation Solution
A hybrid hydrogel scaffold is developed by combining decellularized extracellular matrix (dECM) with a synthetic polymer that is thiolated and photo-tunably crosslinked, allowing for controlled mechanical properties and biochemical cues, enabling the creation of a more relevant model for disease and regeneration studies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogels are made only of decellularized extracellular matrix (dECM), then complex biochemical cues are present, but mechanical properties are weak and not robust
Solution Approach 1:
The patent combines decellularized extracellular matrix (dECM) with synthetic polymer networks to create composite hydrogels. The dECM provides complex biochemical cues including proteins and growth factors, while the synthetic polymer component contributes robust mechanical strength and structural stability. This composite approach allows the hydrogel to simultaneously exhibit both reliable mechanical properties and versatile biochemical functionality.
2Adaptability or versatility
If fully synthetic hydrogels are used, then robust mechanical properties are achieved, but complex biochemical cues of dECM are absent
Solution Approach 1:
The patent merges synthetic polymer networks with decellularized extracellular matrix components to create hybrid hydrogels. The synthetic polymer provides tunable mechanical properties and structural framework, while the integrated dECM contributes authentic biochemical cues such as collagen, elastin, and growth factors. This merging enables the hydrogel to reliably support cell culture and disease modeling while maintaining robust mechanical characteristics.
3Reliability
If dECM is combined with synthetic polymer, then both mechanical strength and biochemical cues are achieved, but system complexity increases
Solution Approach 1:
The patent applies local quality by incorporating dECM components specifically into the hydrogel network at locations where biochemical signaling is needed, while the synthetic polymer forms the overarching structural framework. This spatial differentiation allows the complex multi-component system to function efficiently, with each component performing its specialized role without requiring uniform distribution of all materials throughout the entire hydrogel volume.
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 hybrid hydrogel system provides a platform with tunable stiffness, supporting cellular viability and activation, and allows for spatiotemporal control over mechanical properties, effectively decoupling fibrotic tissue composition from mechanical changes, thus mimicking the in vivo environment for studying fibrotic diseases.
Implementation Method 1
a synthetic polymer crosslinked to the dECM, wherein the dECM is thiolated and wherein the synthetic polymer has a photo-tunable stiffness
Implementation Method 2
a synthetic polymer crosslinked to the dECM, wherein the dECM is thiolated
Data Source
AI summary
The present invention relates in part to hybrid hydrogel scaffolds including a decellularized extracellular matrix (dECM) tissue, and a synthetic polymer. The dECM may include any suitable tissue including for example, lung tissue, heart tissue, heart-lung block tissue, skin tissue, liver tissue, pancreatic tissue, kidney tissue, and the like.