Alginate Gel and Stem Cell Composition for Disc Regeneration
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Solution Overview
Problem
Current treatments for intervertebral disc degeneration, such as discectomy, have limitations due to the low self-repairing ability of the nucleus pulposus, leading to recurrent herniation and challenges in regenerating intervertebral disc tissues, especially in middle-aged and older patients.
Innovation Solution
A composition comprising a low endotoxin monovalent metal salt of alginic acid and human bone marrow-derived high-purity mesenchymal stem cells is used to promote regeneration of the nucleus pulposus by activating and differentiating stem cells into nucleus pulposus cells, enhancing tissue repair and reducing degeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discectomy is performed to treat intervertebral disc herniation, then herniation can be removed, but the nucleus pulposus self-repair ability is insufficient leading to high recurrence rate
Solution Approach 1:
The patent applies preliminary action by introducing mesenchymal stem cells and alginic acid gel before the herniation recurs. The stem cells are prepared and injected into the nucleus pulposus cavity prior to potential herniation events, creating a regenerative foundation that prevents recurrence rather than merely treating symptoms after they occur.
Solution Approach 2:
The patent uses alginic acid gel as an intermediary carrier medium to deliver mesenchymal stem cells to the nucleus pulposus site. The gel serves as a biocompatible matrix that maintains cell viability, provides structural support, and facilitates gradual release of stem cells to promote tissue regeneration and prevent herniation recurrence.
2Reliability
If discectomy is performed, then herniation can be removed, but scar tissues form making it difficult to confirm spinal nerve position
Solution Approach 1:
The patent extracts and removes the problematic scar tissue formation by introducing mesenchymal stem cells that differentiate into nucleus pulposus cells, replacing the scarred area with functional tissue. This extraction of scar tissue restores the natural disc structure and eliminates the interference with spinal nerve detection.
Solution Approach 2:
The patent changes the tissue parameter at the nucleus pulposus site by transforming scar tissue into regenerated nucleus pulposus tissue through stem cell differentiation. This parameter change from fibrotic to cartilaginous tissue restores the disc's natural properties and improves detectability of spinal nerves.
3Ease of manufacture
If gel monotherapy is used, then intervertebral disc tissues can be spontaneously repaired, but regeneration is insufficient in middle-aged and older patients with weak self-healing ability
Solution Approach 1:
The patent merges two components: mesenchymal stem cells and alginic acid gel. The stem cells provide active regenerative capability while the gel provides structural support and delivery mechanism. This combination creates a synergistic effect that enhances tissue repair and regeneration, particularly in elderly patients whose natural self-healing ability is compromised.
Solution Approach 2:
The patent enables the nucleus pulposus to perform self-service regeneration by introducing mesenchymal stem cells that automatically differentiate into nucleus pulposus cells and repair the tissue. The alginic acid gel provides a biocompatible environment that supports this self-repair process, making the tissue self-sufficient for regeneration even in elderly patients.
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 composition effectively suppresses degenerative changes in the nucleus pulposus and entire intervertebral disc tissues, increases type II collagen-positive hyaline cartilage-like cells, and promotes regeneration even in cases with weak self-healing, reducing the recurrence of intervertebral disc herniation and associated pain.
Implementation Method 1
high-purity curable gels have been developed based on alginic acid
Implementation Method 2
a low endotoxin monovalent metal salt of alginic acid and mesenchymal stem cells
Data Source
AI summary
Provided is a composition for promotion of the regeneration of the nucleus pulposus of an intervertebral disc, said composition comprising a low endotoxin monovalent metal salt of alginic acid and mesenchymal stem cells. In particular, the composition of the present invention promotes the regeneration of the nucleus pulposus of an intervertebral disc via activation of nucleus pulposus cells by human bone marrow-derived high-purity mesenchymal stem cells and/or differentiation of human bone marrow-derived high-purity mesenchymal stem cells into nucleus pulposus cells.