Axon diodes for the reconstruction of oriented neuronal networks in microfluidic chambers

Jean Michel Peyrin*, Bérangère Deleglise, Laure Saias, Maéva Vignes, Paul Gougis, Sebastien Magnifico, Sandrine Betuing, Mathéa Pietri, Jocelyne Caboche, Peter Vanhoutte, Jean Louis Viovy, Bernard Brugg

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Various experimental models are used to study brain development and degeneration. They range from whole animal models, which preserve anatomical structures but strongly limit investigations at the cellular level, to dissociated cell culture systems that allow detailed observation of cell phenotypes but lack the highly ordered physiological neuron connection architecture. We describe here a platform comprising independent cell culture chambers separated by an array of "axonal diodes". This array involves asymmetric micro-channels, imposing unidirectional axon connectivity with 97% selectivity. It allows the construction of complex, oriented neuronal networks not feasible with earlier platforms. Different neuronal subtypes could be co-cultivated for weeks, and sequential seeding of different cell populations reproduced physiological network development. To illustrate possible applications, we created and characterized a cortico-striatal oriented network. Functional synaptic connections were established. The activation of striatal differentiation by cortical axons, and the synchronization of neural activity were demonstrated. Each neuronal population and subcompartment could be chemically addressed individually. The directionality of neural pathways being a key feature of the nervous system organization, the axon diode concept brings in a paradigmatic change in neuronal culture platforms, with potential applications for studying neuronal development, synaptic transmission and neurodegenerative disorder such as Alzheimer and Parkinson diseases at the sub-cellular, cellular and network levels.

Original languageEnglish
JournalLab on a Chip
Volume11
Issue number21
Pages (from-to)3663-3673
ISSN1473-0197
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Dive into the research topics of 'Axon diodes for the reconstruction of oriented neuronal networks in microfluidic chambers'. Together they form a unique fingerprint.

Cite this