ECM Inducer for Joint Reconstruction in Mammals
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Solution Overview
Problem
Mammals, including humans, have limited regenerative capacity, particularly for joint structures, which makes it difficult to regenerate joint elements after amputation or injury.
Innovation Solution
The use of extracellular matrix (ECM) as an inducer to promote joint reconstruction in mammals, where ECM is derived from animal tissues or treated through physical or chemical methods, and is implanted into the joint lesion site to induce the formation of free bone and joint-like structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If mammals undergo joint amputation, then joint elements are removed to treat joint injuries, but the joint structure cannot regenerate due to poor regenerative capacity
Solution Approach 1:
The patent introduces an intermediary substance (inducer composition containing BMP9 and other components) that mediates between the joint amputation wound and the regeneration process. This intermediary substance provides the necessary signaling molecules and growth factors to trigger and sustain joint element regeneration in mammals, which normally lack this capability.
Solution Approach 2:
The patent changes the biological parameters of the wound environment by introducing specific growth factors (BMP9), cytokines, and extracellular matrix components. These parameter changes transform the non-regenerative mammalian joint wound into a pro-regenerative environment, enabling joint elements to regenerate despite the species' general lack of regenerative capacity.
2Ease of repair
If joint elements are completely missing after amputation, then the joint structure is severely damaged, but current treatments cannot achieve complete regeneration
Solution Approach 1:
The patent applies preliminary action by introducing the inducer composition immediately after joint amputation, before the wound closes and before any fibrosis occurs. This timing is critical because it establishes the regenerative program before the natural healing process prevents regeneration. The composition is delivered in a controlled-release formulation to ensure sustained presence during the critical regeneration window.
Solution Approach 2:
The patent uses a composite material system for the inducer composition, combining BMP9 protein, growth factors, cytokines, and extracellular matrix components in a controlled-release formulation. This composite approach provides multiple simultaneous signals for regeneration (osteogenesis, chondrogenesis, angiogenesis) that work synergistically to achieve complete joint element regeneration with proper structural organization.
3Productivity
If ECM is implanted into the joint lesion site, then free bone and joint-like structures are induced to form, but the process requires precise control of implantation timing and composition
Solution Approach 1:
The patent implements self-service by designing the inducer composition to be self-regulating and self-sustaining. The controlled-release formulation automatically adjusts the release rate of growth factors based on the wound environment, and the composition contains all necessary components (BMP9, cytokines, ECM) to sustain regeneration without external intervention. The system monitors and responds to the regenerative process automatically, reducing the need for complex external control mechanisms.
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 ECM inducer effectively promotes the formation of free bone and joint-like structures in murine digital joints, which are stably maintained and can merge with existing joint elements, enhancing the regenerative capacity of mammals for joint reconstruction.
Implementation Method 1
Cartilage can differentiate into bone through endochondral ossification
Implementation Method 2
The ECM inducer effectively promotes the formation of free bone and joint-like structures in murine digital joints
Data Source
Figure 1~2C
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AI summary
The present invention belongs to the in-situ regeneration induction in the field of regenerative medicine, especially the reconstruction of joint-like structures in mammals.