Cell Compositions for Bone Regeneration via Gene Expression Profiling
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Solution Overview
Problem
Current methods for bone regeneration, such as bone grafting, are associated with significant morbidity, complications, and limited supply, and existing tissue engineering approaches often rely exclusively on osteoblasts, neglecting the coordinated role of osteoclasts and endothelial cells in bone remodeling.
Innovation Solution
A cell population with a specific gene expression profile, characterized by differences in expression levels of multiple genes, is identified and used for transplantation, which includes mineral particles like coral or cancellous bone, to promote bone regeneration by mimicking the natural bone remodeling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bone grafting procedures are used to treat bone defects, then bone regeneration is achieved, but patient morbidity and surgical complications increase
Solution Approach 1:
The invention extracts and utilizes specific growth factors (BMP-2, BMP-4, BMP-7) and cellular components from bone tissue to create a concentrated therapeutic composition. This extraction allows the therapeutic agents to be delivered without performing invasive bone harvesting procedures, thereby achieving bone regeneration while avoiding the morbidity and complications associated with surgical tissue extraction
Solution Approach 2:
The invention introduces an intermediary carrier composition containing growth factors and cellular components that mediates the bone regeneration process. This intermediary composition serves as a substitute for direct autografting, transferring the regenerative capacity from harvested bone tissue to the defect site through a controlled delivery system rather than direct surgical transplantation
2Quantity of substance
If tissue harvesting is performed for autologous grafts, then bone regeneration material is obtained, but inflammation and infection risks increase
Solution Approach 1:
The invention creates a simplified copy or surrogate of the therapeutic effect achieved through tissue harvesting. By isolating and reproducing the key regenerative components (growth factors BMP-2, BMP-4, BMP-7 and cellular elements) in a controlled composition, the invention replicates the bone regeneration capability without requiring actual surgical harvesting, thereby eliminating the associated inflammation and infection risks
Solution Approach 2:
The invention employs a disposable carrier composition that delivers the therapeutic payload and is then discarded or resorbed. This single-use approach eliminates the need for repeated invasive harvesting procedures and associated complications, providing a safe, limited-duration therapeutic intervention that achieves regeneration without the recurring risks of surgical tissue extraction
3Reliability
If only osteoblasts are used in tissue engineering approaches, then bone formation is promoted, but the coordinated role of osteoclasts and endothelial cells is neglected
Solution Approach 1:
The invention merges multiple cell types and growth factor components into a single integrated composition. By combining osteoblasts with osteoclasts and endothelial cells, along with multiple BMP growth factors, the invention creates a synergistic mixture that replicates the coordinated activity of natural bone remodeling, achieving both bone formation and the necessary resorption and vascularization processes
Solution Approach 2:
The invention creates a multi-functional composition that performs multiple bone remodeling functions simultaneously. The carrier composition is designed to deliver not only osteogenic cells but also osteoclasts for bone resorption and endothelial cells for vascularization, making it a universal solution that addresses all aspects of bone regeneration rather than focusing on a single function
Data Source
AI summary
A composition comprising a cell population wherein the population is suitable for transplantation into a subject in need thereof, and characterized by differences of expression levels of a plurality of genes. Further, methods and kits for identifying a cell population suitable for transplantation into a subject in need thereof.