Micropatterned substrates coated with neuronal adhesion molecules for high-content study of synapse formation

Katalin Czöndör, Mikael Garcia, Amélie Argento, Audrey Constals, Christelle Breillat, Béatrice Tessier and Olivier Thoumine ()
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Katalin Czöndör: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297
Mikael Garcia: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297
Amélie Argento: CYTOO SA, Minatec
Audrey Constals: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297
Christelle Breillat: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297
Béatrice Tessier: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297
Olivier Thoumine: University of Bordeaux, Interdisciplinary Institute for Neuroscience, UMR 5297

Nature Communications, 2013, vol. 4, issue 1, 1-14

Abstract: Abstract Studying the roles of different proteins and the mechanisms involved in synaptogenesis is hindered by the complexity and heterogeneity of synapse types, and by the spatial and temporal unpredictability of spontaneous synapse formation. Here we demonstrate a robust and high-content method to induce selectively presynaptic or postsynaptic structures at controlled locations. Neurons are cultured on micropatterned substrates comprising arrays of micron-scale dots coated with various synaptogenic adhesion molecules. When plated on neurexin-1β-coated micropatterns, neurons expressing neuroligin-1 exhibit specific dendritic organization and selective recruitment of the postsynaptic scaffolding molecule PSD-95. Furthermore, functional AMPA receptors are trapped at neurexin-1β dots, as revealed by live-imaging experiments. In contrast, neurons plated on SynCAM1-coated substrates exhibit strongly patterned axons and selectively assemble functional presynapses. N-cadherin coating, however, is not able to elicit synapses, indicating the specificity of our system. This method opens the way to both fundamental and therapeutic studies of various synaptic systems.

Date: 2013
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DOI: 10.1038/ncomms3252

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