Engineered Cell-Based Leather via Fibroblast Culture
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Solution Overview
Problem
Current bio-based leather alternatives lack the mechanical properties and sustainability credentials to effectively replace traditional leather, failing to address consumer concerns about animal cruelty and environmental impact.
Innovation Solution
The production of engineered cell-based leather using differentiated adult dermal fibroblasts, which are cultured on microcarriers and tanned with eco-friendly agents like genipin and pyrogallol tannins, resulting in a material with improved tensile strength and Young's modulus, suitable for scale-up and ecologic tanning processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional leather production is used, then mechanical properties and durability are achieved, but animal cruelty and environmental pollution occur
Solution Approach 1:
The patent creates artificial skin that copies the structure and mechanical properties of traditional leather through cell culture technology. Dermal fibroblasts are cultured to produce collagen matrices that replicate the layered structure of natural leather, achieving similar tensile strength and durability without using animal hides
Solution Approach 2:
The patent changes the fundamental parameters of leather production by transitioning from animal-based to cell-based manufacturing. By controlling cell culture conditions, collagen deposition, and tissue engineering parameters, the patent produces leather substitutes with comparable mechanical properties while eliminating animal cruelty and reducing environmental impact
2Shape
If plastic-based leather alternatives are used, then leather-like appearance is achieved, but eco-friendliness deteriorates
Solution Approach 1:
The patent creates a composite biological material consisting of cultured dermal fibroblasts, collagen matrices, and extracellular matrix components. This bio-composite material naturally exhibits leather-like appearance and texture while being biodegradable and environmentally sustainable, unlike plastic-based alternatives
3Object-affected harmful factors
If bio-based leather alternatives are used, then eco-friendliness is improved, but mechanical properties deteriorate
Solution Approach 1:
The patent employs dynamic cell culture processes where dermal fibroblasts are continuously cultivated and stimulated to produce collagen and extracellular matrix. The mechanical properties are enhanced through dynamic tissue engineering techniques including mechanical stretching and biochemical stimulation during the culture period, resulting in bio-based leather with improved strength and durability
4Stability of the object's composition
If adherent fibroblast cells are cultured for leather production, then stable material suitable for leather substitute is obtained, but scale-up requires completely different setup compared to suspension cell cultures
Solution Approach 1:
The patent uses microcarriers as intermediary substrates to support adherent fibroblast cell cultures. These microcarriers provide a large surface area for cell attachment and proliferation, enabling scale-up from laboratory to industrial production. The microcarriers act as a mediator between the adherent nature of fibroblasts and the requirements of large-scale bioreactor systems
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 engineered cell-based leather offers a cruelty-free and ecologically friendly alternative with enhanced mechanical properties, saving water and reducing CO2 emissions, while maintaining the characteristics of traditional leather, thus addressing consumer sustainability concerns and maintaining market competitiveness.
Implementation Method 1
The fibroblasts are differentiated in vitro in a culture medium supplemented with ascorbic acid, beta-glycerophosphate and insulin-transferrin-sodium selenite; The fibroblasts are then induced to produce collagen and chondroitin sulfate by culturing the cells in a culture medium supplemented with ascorbic acid, beta-glycerophosphate and insulin-transferrin-sodium selenite
Implementation Method 2
The engineered cell-based leather is tanned, preferably with an aqueous solution comprising a crosslinker
Data Source
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AI summary
The present disclosure relates to an engineered cell-based leather using differentiated skin cells, more specifically reptile or non-human dermal fibroblasts. This leather is cruelty-free and the type of skin reconstruction allows for a tanning process that is ecologic.