Bioreactor Organoid Culture With Size-Sieved Cell Seeding
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Solution Overview
Problem
Existing methods for culturing organoids rely heavily on technical skill and produce small numbers of inconsistent organoids, limiting their availability and comparability for drug testing.
Innovation Solution
A method involving disassociation, sieving, and seeding of unprocessed organoids into a bioreactor with a controlled cell size range and reduced extracellular support matrix, using bioreactors like perfusion systems for dynamic culture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cell culture methods are used to culture organoids, then the process is simple, but the number of organoids produced is small and consistency is poor
Solution Approach 1:
The patent applies parameter changes by controlling cell size through sieving (10-100 μm range) and optimizing culture conditions including extracellular matrix composition, oxygen tension (2-21%), and nutrient supply. These parameter controls enable consistent organoid production while increasing yield, resolving the contradiction between productivity and manufacturing precision.
Solution Approach 2:
The patent segments the organoid culture process into distinct controlled stages: cell dissociation, size-based sieving, controlled seeding density, and staged differentiation. This segmentation allows each parameter to be optimized independently, improving both the number and consistency of organoids produced.
2Adaptability or versatility
If manual laboratory culture methods are used, then flexibility is maintained, but technical skill dependency increases and standardization decreases
Solution Approach 1:
The patent implements self-service through automated bioreactor systems that maintain culture conditions autonomously. The system automatically controls oxygen tension, nutrient delivery, and waste removal, reducing technical skill dependency while maintaining flexibility through programmable parameters.
Solution Approach 2:
The bioreactor system is designed with multi-functionality, capable of supporting different organoid types (intestinal, brain, liver) and culture conditions through interchangeable components and programmable control. This universality maintains adaptability while standardizing the culture process across different applications.
3Adaptability or versatility
If heterogeneous cell sizes are seeded, then cell diversity is maintained, but organoid variability increases
Solution Approach 1:
The patent applies local quality by creating controlled heterogeneity within defined boundaries. Cells are sieved to a specific size range (10-100 μm) to ensure uniformity, while maintaining functional diversity through controlled differentiation cues. This resolves the contradiction by allowing cell diversity within standardized parameters.
Solution Approach 2:
The patent uses parameter changes to balance cell diversity and uniformity by controlling physical parameters (size 10-100 μm through sieving) while allowing biological parameters (cell type, differentiation state) to vary within controlled ranges. This enables consistent organoid production from diverse cell populations.
Data Source
AI summary
The present invention provides a method for culturing organoids, the method comprising: a) disassociating unprocessed organoids to produce a cell suspension; b) sieving the cell suspension through a cell strainer to retain a sieved cell suspension containing cells of about 10 μm to about 1 mm in diameter, and c) seeding cells of the sieved cell suspension into a bioreactor in a cell culture medium comprising an extracellular support matrix.