Hydrogel-Elastomer Hybrids for Cell Containment
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Solution Overview
Problem
Maintaining the viability, functionality, and safety of genetically modified microorganisms (GMMs) in freestanding materials and devices is challenging due to deformations and the need for effective containment to prevent environmental escape.
Innovation Solution
Development of stretchable and robust hydrogel-elastomer hybrids that encapsulate GMMs, providing sustainable water and nutrients, preventing cell leakage, and incorporating a tough biocompatible shell and alginate-based core for physical and chemical containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GMMs are integrated into freestanding materials and devices, then functional capabilities are enhanced, but cell leakage and environmental escape occur during deformations
Solution Approach 1:
The patent employs a composite hydrogel-elastomer material system where the hydrogel phase provides a biocompatible environment for GMM encapsulation while the elastomer phase provides mechanical robustness and deformation resistance. This composite structure simultaneously achieves functional versatility and reliable cell containment during device operation.
Solution Approach 2:
The patent utilizes a flexible hydrogel-elastomer hybrid shell structure that encapsulates GMMs. This shell is designed to be mechanically robust yet flexible enough to accommodate device deformations without compromising cell containment, preventing leakage while maintaining adaptability.
2Reliability
If hydrogel is used to encapsulate GMMs, then cell viability is maintained through water and nutrient supply, but mechanical robustness is reduced
Solution Approach 1:
The patent creates a composite hydrogel-elastomer hybrid where the hydrogel component maintains cell viability through water and nutrient supply, while the elastomer component provides the necessary mechanical robustness. The synergistic combination resolves the contradiction between biocompatibility and mechanical strength.
Solution Approach 2:
The patent applies different material properties to different regions/functions: the hydrogel phase provides local biocompatibility and nutrient transport for cell viability, while the elastomer phase provides local mechanical strength and deformation resistance. This spatial differentiation of material qualities resolves the contradiction.
3Reliability
If physical containment structures are added for GMM safety, then cell leakage is prevented, but device complexity increases
Solution Approach 1:
The patent integrates biocontainment functionality directly into the composite hydrogel-elastomer material structure itself, rather than adding separate containment components. The elastomer phase inherently provides mechanical barriers to cell leakage, achieving biocontainment without significantly increasing overall device complexity.
Solution Approach 2:
The composite hydrogel-elastomer material serves multiple functions simultaneously: it provides mechanical robustness, enables deformation resistance, ensures cell containment, and maintains cell viability. This multi-functionality reduces the need for additional separate containment structures, thereby limiting complexity increase.
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-elastomer hybrids maintain long-term viability and functionality of GMMs under deformations, prevent cell escape, and enable effective biocontainment, allowing for diverse applications such as sensors and remediation systems.
Implementation Method 1
Communication between different GMMs, such as different bacterial strains, and with the environment is achieved via diffusion of molecules in the hydrogel
Implementation Method 2
the elastomer component is air permeable, maintaining long-term viability and functionality of the encapsulated cells
Implementation Method 3
The high stretchability and robustness of the hydrogel-elastomer hybrids prevents leakage of cells from the living materials and devices, even under large deformations
Data Source
AI summary
Provided herein, in some embodiments, are hydrogel-elastomer and hydrogel-alginate devices, compositions and associated methods to encapsulate living cells.