Immunogenically Reduced Collagen Matrix for Soft Tissue Repair
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Solution Overview
Problem
Current methods for repairing soft tissue injuries, such as tendon or ligament damage, often require surgical intervention and may result in slow or incomplete healing due to the limitations of self-repair capabilities and existing stem cell therapies that involve ex vivo culturing, leading to undesirable phenotypic changes in stem cells.
Innovation Solution
A composition comprising a collagen matrix seeded with mesenchymal stem cells derived from a tissue suspension, where the stem cells are not cultured ex vivo, and the collagen matrix is treated to reduce immunogenicity and retain bioactive cytokines and growth factors, promoting rapid and effective soft tissue repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If stem cells are cultured ex vivo prior to seeding on collagen matrix, then cell proliferation and expansion are achieved, but undesirable phenotypic changes occur in the stem cells
Solution Approach 1:
The patent applies preliminary action by preparing the collagen matrix with immunogenicity reduction and bioactive factor retention before stem cell seeding, creating an optimized microenvironment that enables direct use of freshly isolated stem cells without ex vivo culturing, thus preventing phenotypic changes while maintaining cell quantity
Solution Approach 2:
The patent changes the parameters of the collagen matrix by treating it to reduce immunogenicity and retain bioactive cytokines and growth factors. This parameter modification creates a more supportive environment that allows stem cells to be used immediately after isolation without requiring ex vivo expansion, thereby preserving stem cell phenotype
2Strength
If collagen matrix is used as is, then structural support is provided, but high immunogenicity causes rejection responses
Solution Approach 1:
The patent applies the extraction principle by removing or reducing the immunogenic components from the collagen matrix through specific treatments, while preserving the structural integrity and bioactive factors necessary for tissue regeneration
Solution Approach 2:
The patent modifies the immunogenicity parameter of the collagen matrix through treatment processes that reduce immune recognition while maintaining other critical properties such as structural support and bioactivity
3Strength
If traditional surgical intervention is used to repair soft tissue injury, then immediate structural replacement is achieved, but healing process is slow and often incomplete
Solution Approach 1:
The patent uses a composite material system combining immunogenically reduced collagen matrix with retained bioactive cytokines and growth factors, creating a multifunctional scaffold that provides both structural support and active regeneration promotion, thereby accelerating healing while maintaining structural integrity
Solution Approach 2:
The collagen matrix acts as an intermediary that bridges the gap between immediate structural replacement and complete tissue regeneration by providing a scaffold that supports both structural function and active healing processes through retained bioactive factors
Data Source
AI summary
The present invention provides compositions for treating soft tissue injuries comprising a collagen matrix and mesenchymal stem cells adhered to the collagen matrix. Methods of making and using compositions comprising a collagen matrix and mesenchymal stem cells adhered to the collagen matrix are also provided.