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Updated: Jun 24, 2025
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A Multi-compartment CNS Neuron-glia Co-culture Microfluidic Platform
Published on: September 10, 2009
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A fluid-walled microfluidic platform for human neuron microcircuits and directed axotomy
Federico Nebuloni1,2, Quyen B Do3,4,5, Peter R Cook2
1Osney Thermofluids Institute, Department of Engineering Science, University of Oxford, Osney Mead, Oxford OX2 0ES, UK. edmond.walsh@eng.ox.ac.uk.
Lab on a Chip
|June 6, 2024
Summary
Researchers developed a novel microfluidic system for building and studying human neuronal circuits in vitro. This accessible technology enables the creation of functional cortico-striatal connections and axotomy models for drug screening.
Area of Science:
- Neuroscience
- Biotechnology
- Stem Cell Biology
Background:
- Establishing functional neuronal circuits in vitro is crucial for understanding brain function and disease.
- Existing in vitro models often lack the complexity and accessibility needed for widespread biomedical research.
Purpose of the Study:
- To develop an accessible and versatile in vitro microfluidic system for constructing and analyzing human neuronal circuits.
- To model unidirectional cortico-striatal connectivity and create a platform for studying axon regeneration and drug screening.
Main Methods:
- Utilized an open microfluidic system with fluid walls (FC40) to create dumbbell-shaped neuronal circuits in Petri dishes.
- Cultured post-mitotic neurons derived from human induced pluripotent stem cells (iPSCs) within the microfluidic chambers.
- Developed a non-contact axotomy assay using a media jet to sever axons within microfluidic conduits.
Main Results:
- Successfully constructed dumbbell-shaped neuronal circuits mimicking unidirectional cortico-striatal connectivity within minutes.
- Demonstrated that severed cortical axons in conduits can regenerate, promoted by brain-derived neurotrophic factor and striatal neurons.
- The system allows for easy addition of conduits and chambers, enabling the creation of more complex neuronal networks.
Conclusions:
- The developed microfluidic platform provides an accessible and efficient method for building and studying human neuronal circuits in vitro.
- This system facilitates the investigation of neuronal connectivity, axon regeneration, and offers a valuable tool for drug discovery and neurodegenerative disease research.
