Injectable Decellularized Nerve Hydrogel for Regeneration
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Solution Overview
Problem
Current methods for peripheral nerve repair, such as nerve autografting and synthetic guidance conduits, often result in disappointing functional outcomes due to immunogenic reactions, foreign body reactions, and limited regeneration, especially for critically sized defects.
Innovation Solution
A decellularized peripheral nerve-specific scaffold is formulated into an injectable hydrogel form, which is non-cytotoxic and supports neuronal outgrowth, reducing muscular atrophy and promoting nerve regrowth by maintaining nerve-specific components and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nerve autografting is used for critically sized defects, then nerve regeneration is possible, but donor site morbidity and immune response occur
Solution Approach 1:
The patent extracts the beneficial extracellular matrix components from native nerve tissue through decellularization, removing immunogenic cellular elements while retaining the structural and biochemical framework needed for nerve regeneration. This creates an acellular scaffold that eliminates donor site morbidity and reduces immune rejection while maintaining regenerative capacity.
Solution Approach 2:
The decellularized nerve scaffold acts as an intermediary between the host immune system and the nerve regeneration process. By removing cellular components that trigger immune responses while preserving the extracellular matrix architecture, the scaffold mediates between avoiding immunogenicity and supporting axonal growth.
2Reliability
If synthetic guidance conduits are used, then nerve regeneration support is provided, but foreign body reaction and limited regeneration occur
Solution Approach 1:
The patent creates a composite material by combining synthetic conduit structure with biologically derived extracellular matrix components. The synthetic provides mechanical integrity and guidance, while the decellularized nerve tissue adds bioactivity and reduces foreign body reaction, achieving both structural support and biological compatibility.
Solution Approach 2:
The patent changes the biochemical parameters of the scaffold by incorporating nerve-specific extracellular matrix components with particular concentrations of growth factors and structural proteins. This optimization of compositional parameters enhances nerve regeneration support while minimizing immunogenicity compared to generic synthetic materials.
3Object-affected harmful factors
If decellularized tissue scaffold is used, then immunogenic cellular components are removed, but nerve-specific components must be retained
Solution Approach 1:
The patent selectively extracts cellular components from nerve tissue through controlled decellularization processes, removing nuclei and cytoplasmic elements that cause immune responses while deliberately preserving the extracellular matrix, growth factors, and structural proteins essential for nerve regeneration.
Solution Approach 2:
The patent applies different properties to different components of the tissue: cellular elements are made immunogenic-free through removal, while extracellular matrix regions are preserved to maintain their native nerve-specific biochemical and structural qualities that support axonal guidance and regeneration.
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 effectively supports nerve repair and functional recovery by minimizing immunogenic responses and promoting axonal regrowth, as demonstrated in a canine model of recurrent laryngeal nerve injury, with improved muscle fiber diameter and reinnervation amplitudes compared to control groups.
Implementation Method 1
the decellularized tissue scaffold is formulated into a hydrogel through the use of enzymatic degradation
Implementation Method 2
supports the growth of neurons and speeds recovery following surgical reconstruction
Data Source
AI summary
The present invention relates to a peripheral nerve-specific hydrogel material, which is deliverable in a minimally invasive fashion, sustains the growth of neurons, and speeds recovery following surgical reconstruction.