Extracellular Matrix Hydrogel Patch for Non-Invasive Spinal Cord Injury Treatment
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Solution Overview
Problem
Current treatments for spinal cord injuries lack a non-invasive method for nerve regeneration, particularly during the acute period following injury, due to limitations with adult and embryonic stem cells, and existing therapies do not effectively induce spinal cord nerve regeneration.
Innovation Solution
A hydrogel patch composed of fibrin, laminin, or laminin-derived peptides, and hyaluronic acid, which can be administered non-invasively to create a regenerative environment for spinal cord nerves, incorporating thrombin to convert fibrinogen into fibrin, and optionally including cell growth factors for enhanced regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adult stem cells are used for spinal cord injury treatment, then cell therapy can be provided, but immune rejection and limited differentiation ability occur
Solution Approach 1:
The patent uses an extracellular matrix-based hydrogel as an intermediary substance that provides structural support and biochemical cues for cell differentiation without triggering immune rejection. The hydrogel contains laminin, fibronectin, and other matrix components that mediate cell adhesion and differentiation while avoiding the immunogenicity problems of adult or embryonic stem cells.
2Adaptability or versatility
If embryonic stem cells are used for spinal cord injury treatment, then cell differentiation ability is improved, but ethical problems and immune rejection occur
Solution Approach 1:
The extracellular matrix hydrogel serves as a mediator that induces differentiation of patient-specific induced pluripotent stem cells into neural lineages without requiring embryonic stem cells. The matrix components (laminin, fibronectin, collagen) provide the necessary biochemical environment for neural differentiation while avoiding ethical concerns and immunogenicity.
Solution Approach 2:
The patent changes the biochemical parameters of the culture environment by incorporating specific extracellular matrix components at controlled concentrations. This alters the differentiation pathway of iPSCs toward neural lineages, achieving embryonic-like differentiation capability without the ethical and immunological problems of embryonic stem cells.
3Quantity of substance
If induced pluripotent stem cells are used for acute period treatment, then cell population requirements are met, but production and differentiation time is too long
Solution Approach 1:
The patent prepares extracellular matrix-based hydrogel scaffolds in advance, before the acute treatment period. These pre-prepared scaffolds can be immediately applied to patient-specific iPSCs, providing the necessary differentiation environment without requiring time-consuming cell culture and differentiation processes during the critical acute window.
Solution Approach 2:
The hydrogel matrix creates optimal biochemical parameters that accelerate iPSC differentiation into neural lineages. By controlling matrix composition, stiffness, and biochemical cues, the differentiation process is sped up to meet the timing requirements for acute spinal cord injury treatment.
4Reliability
If invasive surgical treatment is used for spinal cord injury, then nerve regeneration can be attempted, but secondary injury may occur
Solution Approach 1:
The extracellular matrix hydrogel acts as a non-invasive intermediary that delivers regenerative factors and structural support directly to the injury site without requiring surgical intervention. This approach provides nerve regeneration capabilities while avoiding the mechanical trauma and infection risks associated with invasive surgery.
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 patch facilitates neural stem cell differentiation, promotes nerve regeneration, and reduces inflammatory responses, effectively treating spinal cord injuries by providing a supportive environment for tissue recovery and regeneration without causing secondary injury.
Implementation Method 1
incorporating thrombin to convert fibrinogen into fibrin
Data Source
AI summary
Provided are a method for manufacturing a pharmaceutical composition for the treatment of spinal cord injury, and a method for treating spinal cord injury administering to a subject in need thereof the pharmaceutical composition. The method fo enables a spinal cord injury patient to be treated in a manner which is non-invasive to the spinal cord.