Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 32, Pages 9313-9318Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201503801
Keywords
microfluidic chip; nano-sensors; neuronal communication; synapse
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Funding
- National Natural Science Foundation of China [21375099, 91017013]
- Doctoral Fund of the Ministry of Education of China [20120141110031]
- Fundamental Research Funds for the Central Universities [2042014kf0192]
- UMR (CNRS-ENS-UPMC) [8640]
- LIA NanoBioCatEchem
- ANR CHEX MicroNanoChem
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Chemical synaptic transmission is central to the brain functions. In this regard, real-time monitoring of chemical synaptic transmission during neuronal communication remains a great challenge. In this work, invivo-like oriented neural networks between superior cervical ganglion (SCG) neurons and their effector smooth muscle cells (SMC) were assembled in a microfluidic device. This allowed amperometric detection of individual neurotransmitter release events inside functional SCG-SMC synapse with carbon fiber nanoelectrodes as well as recording of postsynaptic potential using glass nanopipette electrodes. The high vesicular release activities essentially involved complex events arising from flickering fusion pores as quantitatively established based on simulations. This work allowed for the first time monitoring insitu chemical synaptic transmission under conditions close to those found invivo, which may yield important and new insights into the nature of neuronal communications.
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