Oriented Collagen-Apatite Material via Cell Seeding
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Solution Overview
Problem
Current methods fail to produce oriented collagen/apatite materials at a macro size, lacking control over orientation, which is crucial for mimicking the structural properties of bone tissue and addressing bone-related issues such as osteoporosis and bony defects.
Innovation Solution
A method involving the preparation of oriented collagen substrates, seeding with osteoblasts or mesenchymal stem cells, and alternating immersion in calcium and phosphate solutions to fix apatite crystals with controlled orientation, resulting in a biocompatible material with orientations similar to natural bone tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods (magnetic field application, spin-coating) are used to orient collagen, then collagen orientation is achieved, but the material size remains small and apatite orientation control is impossible
Solution Approach 1:
The invention applies preliminary action by first orienting the collagen substrate using magnetic field or spin-coating methods before introducing osteoblasts. This pre-orientation of collagen provides a template that guides subsequent apatite crystal formation, ensuring that apatite aligns with the collagen orientation. This two-stage approach enables both orientation control and macro-scale material production
Solution Approach 2:
Osteoblasts serve as an intermediary between collagen orientation and apatite formation. The cells naturally deposit apatite in alignment with the collagen fiber direction, translating the pre-established collagen orientation into apatite orientation. This biological mediator enables controlled orientation at macro scales that cannot be achieved by direct physical methods alone
2Quantity of substance
If collagen is calcified using conventional methods, then apatite is formed, but orientation control is lost and materials cannot be produced at macro sizes
Solution Approach 1:
The invention performs preliminary orientation of collagen substrates using magnetic fields or spin-coating techniques before initiating calcification. This ensures that when apatite forms during subsequent calcification processes, it follows the pre-established collagen orientation pattern, maintaining orientation control even as material quantity increases to macro scales
Solution Approach 2:
The system utilizes the natural self-organizing behavior of osteoblasts to deposit apatite in alignment with collagen fibers. The cells inherently follow the collagen template, providing self-directed orientation control without requiring complex external guidance mechanisms, enabling both large-scale production and precision orientation
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
Enables the production of oriented collagen/apatite materials at a macro size, facilitating early osteoanagenesis and providing a biocompatible material for bone regeneration and research, effectively mimicking the orientation and strength of natural bone tissue.
Implementation Method 1
seeding an osteoblast or a mesenchymal stem cell to produce and fix an apatite having an orientation similar to or almost the same as a direction of an orientation of the collagen on a surface and/or inside of the collagen
Implementation Method 2
an oriented collagen substrate, seeding with osteoblasts or mesenchymal stem cells, and alternating immersion in calcium and phosphate solutions to fix apatite crystals with controlled orientation
Data Source
AI summary
It is an object of the present invention to provide an oriented collagen/apatite material wherein an orientation is controlled, and a method of the oriented collagen/apatite material wherein an orientation is controlled. A method of producing an orientated collagen/apatite material according to the present invention, is characterized in that the method comprises; preparing a collagen having an orientation, seeding an osteoblast or a mesenchymal stem cell to produce and fix an apatite having an orientation similar to or almost the same as a direction of an orientation of the collagen on a surface and/or inside of the collagen. Furthermore, in a preferred embodiment of above mentioned method of producing an orientated collagen/apatite material according to the present invention, is characterized in that the osteoblast is an osteoblast like cell or an osteoblast obtained from a living organism.