3D Scaffold Bioreactor for Consistent Loaded Extracellular Vesicles
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Solution Overview
Problem
Current methods for producing and loading exosomes are inefficient, costly, and lack reproducibility, making them unsuitable for industrial-scale pharmaceutical applications, particularly in therapeutic contexts such as treating chronic inflammatory and age-related pathologies.
Innovation Solution
A method involving a bioreactor with a porous three-dimensional scaffold, where adherent cells are seeded and expanded, producing extracellular vesicles which are then loaded with a molecule of interest, followed by purification steps to achieve high-quality, consistent production meeting GMP standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adherent cell culture is used on a porous three-dimensional scaffold to produce exosomes, then cell density and exosome production are improved, but device complexity and ease of automation deteriorate
Solution Approach 1:
The patent uses a porous three-dimensional scaffold that replicates the natural extracellular matrix structure, providing a simplified yet effective platform for high-density cell culture and exosome production without requiring complex bioreactor systems
Solution Approach 2:
The porous three-dimensional scaffold provides a structured environment that enhances cell attachment and proliferation while maintaining simplicity in design, allowing for high cell density and efficient exosome production without complex device architecture
2Manufacturing precision
If complex devices are used for exosome production, then exosome quality is improved, but manufacturing cost and ease of manufacture deteriorate
Solution Approach 1:
The patent employs a disposable porous three-dimensional scaffold that can be used for a single production cycle and then discarded, eliminating the need for complex cleaning and sterilization processes while maintaining high exosome quality and reducing manufacturing costs
Solution Approach 2:
The production system is segmented into a modular porous scaffold design that can be independently manufactured and assembled, simplifying the overall manufacturing process while ensuring consistent exosome quality across production batches
3Quantity of substance
If current exosome production methods are used, then some exosomes can be obtained, but batch-to-batch consistency and scalability to industrial scale deteriorate
Solution Approach 1:
The patent optimizes key parameters including cell seeding density, culture medium composition, and incubation conditions on the porous scaffold to achieve consistent high-yield exosome production across multiple batches, enabling reliable scaling to industrial production levels
Solution Approach 2:
The porous three-dimensional scaffold serves multiple functions simultaneously: providing structural support for high-density cell culture, facilitating nutrient and waste exchange, and enabling consistent exosome production across different batches, thereby ensuring reliability and scalability
Data Source
AI summary
Method for the production of extracellular vesicles, EVs, loaded with a molecule of interest in a bioreactor containing a porous three-dimensional, 3D, scaffold, wherein the method comprises a seeding of the scaffold with a starting number of adherent immortalized cells resuspended after detachment, an attachment of the cells on said scaffold, an expansion of the cells on said scaffold up to a second number of adherent cells, defining a multiplication factor of at least 5 for a single expansion step, a production of EVs by said cells, a phase of loading said EVs with said molecule of interest, a harvest of EVs.