Microfluidic Multi-Organ Chip Co-Culturing iPSC Precursors
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Solution Overview
Problem
Current methods lack the capability to effectively co-culture different induced pluripotent stem cell (iPSC)-derived cells to generate multi-organ chips emulating organ functionality, particularly for drug development and toxicity testing, as there are no reports on co-culturing different stem cell-derived organ precursor cells in microfluidic devices.
Innovation Solution
A microfluidic device comprising iPSC-derived hepatocyte, intestinal, renal tubular, and neuronal precursor cells, differentiated from a single donor iPSC, is used for co-culturing with iPSC-derived fibroblasts and endothelial cells, establishing a microphysiological system that supports physiological conditions and allows for the differentiation and maturation of organ equivalents over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional static cell culture methods are used, then ease of operation is maintained, but the ability to emulate organ functionality and physiological conditions is insufficient
Solution Approach 1:
The patent employs microfluidic devices with dynamic fluid flow systems to deliver nutrients and growth factors to cell cultures, replacing static culture methods. The microfluidic channels create controlled hydraulic environments that simulate physiological fluid dynamics, enabling organ functionality emulation while maintaining operational feasibility through standardized chip designs
Solution Approach 2:
The invention segments the complex task of organ emulation into modular microfluidic chip components, each handling specific physiological functions (nutrient delivery, waste removal, growth factor secretion). This segmentation allows the system to achieve high reliability for organ functionality while keeping individual components manageable in complexity
2Adaptability or versatility
If multiple different stem cell-derived organ precursor cells are co-cultured, then multi-organ chip functionality is achieved, but there are no established methods or protocols available
Solution Approach 1:
The patent establishes a universal microfluidic platform that can accommodate multiple types of stem cell-derived organ precursor cells (hepatocytes, intestinal cells, renal tubular cells, neuronal cells) within a single system. The standardized chip design and culture protocol enable this multi-functionality while providing a reproducible manufacturing approach that addresses the lack of established methods
Solution Approach 2:
The invention utilizes the endogenous growth factors secreted by the co-cultured cells themselves to maintain and differentiate the organ precursor cells, eliminating the need for external addition of multiple growth factors. This self-service mechanism simplifies the culture methodology while enabling complex multi-organ functionality
3Stability of the object's composition
If growth factors are continuously added to maintain cell differentiation, then cell phenotype is maintained, but system complexity and cost increase
Solution Approach 1:
The patent designs the microfluidic co-culture system so that different organ precursor cells mutually provide growth factors and signaling molecules needed for each other's differentiation and maintenance. For example, hepatocytes secrete factors that support intestinal cell differentiation, while renal cells provide signals for neuronal cell maturation. This eliminates the need for continuous external growth factor addition while maintaining phenotype stability
Solution Approach 2:
The system establishes feedback loops where cell differentiation status and growth factor secretion are dynamically balanced through the microfluidic environment. The confined space and controlled flow rates create local concentration gradients that provide negative feedback, preventing over-differentiation or dedifferentiation while simplifying the overall culture medium composition
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 system enables stable co-cultivation of multiple autologous iPSC-derived organ models without extra growth factors, facilitating pharmacokinetic-pharmacodynamic analysis and maintaining phenotype consistency, suitable for ADME(T) profiling and drug testing.
Implementation Method 1
microphysiological systems apply dynamic fluid flow for physiological nutrition of the tissues
Implementation Method 2
co-culturing iPSC-derived organ precursor cells... in separate cell culture compartments that are in microfluidic connection with each other
Data Source
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AI summary
The present disclosure relates to novel multi-organ-chips establishing the differentiation of induced pluripotent stem cell (iPSC)-derived cells into organ equivalents on microfluidic devices and corresponding methods of generating organ equivalents. The present disclosure also relates to novel bioengineered tissue constructs mimicking organ barriers generated with iPSC-derived endothelial cells and/or organoids bioprinted in, and/or seeded on, a hydrogel. The present disclosure further relates to methods of bioengineering organ constructs comprising co-culturing iPSC-derived organ precursor cells and iPSC-derived fibroblasts and endothelial cells. The present disclosure specifically provides a microfluidic device comprising: (i) iPSC-derived hepatocyte precursor cells; (ii) iPSC-derived intestinal precursor cells; (iii) iPSC-derived renal tubular precursor cells; and (iv) iPSC-derived neuronal precursor cells; wherein the iPSC-derived precursor cells according to (i), (ii), (iii) and (iv) are differentiated from a single donor iPSC reprogrammed from a single type of somatic cell.