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Issue 15, 2013
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Glia co-culture with neurons in microfluidic platforms promotes the formation and stabilization of synaptic contacts

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Abstract

Two novel microfluidic cell culture schemes, a vertically-layered set-up and a four chamber set-up, were developed for co-culturing central nervous system (CNS) neurons and glia. The cell chambers in these devices were separated by pressure-enabled valve barriers, which permitted us to control communication between the two cell types. The unique design of these devices facilitated the co-culture of glia with neurons in close proximity (∼50–100 μm), differential transfection of neuronal populations, and dynamic visualization of neuronal interactions, such as the development of synapses. With these co-culture devices, initial synaptic contact between neurons transfected with different fluorescent markers, such as green fluorescent protein (GFP) and mCherry-synaptophysin, was imaged using high-resolution fluorescence microscopy. The presence of glial cells had a profound influence on synapses by increasing the number and stability of synaptic contacts. Interestingly, as determined by liquid chromatography-ion mobility-mass spectrometry, neuron-glia co-cultures produced elevated levels of soluble factors compared to that secreted by individual neuron or glia cultures, suggesting a potential mechanism by which neuron-glia interactions could modulate synaptic function. Collectively, these results show that communication between neurons and glia is critical for the formation and stability of synapses and point to the importance of developing neuron-glia co-culture systems such as the microfluidic platforms described in this study.

Graphical abstract: Glia co-culture with neurons in microfluidic platforms promotes the formation and stabilization of synaptic contacts

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Supplementary files

Article information


Submitted
21 Feb 2013
Accepted
21 May 2013
First published
21 May 2013

This article is Open Access

Lab Chip, 2013,13, 3008-3021
Article type
Paper

Glia co-culture with neurons in microfluidic platforms promotes the formation and stabilization of synaptic contacts

M. Shi, D. Majumdar, Y. Gao, B. M. Brewer, C. R. Goodwin, J. A. McLean, D. Li and D. J. Webb, Lab Chip, 2013, 13, 3008
DOI: 10.1039/C3LC50249J

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