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In vitro CNS tissue analogues formed by self-organisation of reaggregated post-natal brain tissue

Record type: Article

In this paper we report the characterization of ‘Hi-Spot’ cultures formed by the re-aggregation of dissociated post-natal CNS tissue grown at an air-liquid interface. This produces a self-organised, dense, organotypic cellular network. Western blot, immunohistochemical, viral transfection and electron microscopy analyses reveal neuronal and glial populations, and the development of a synaptic network. Multi-electrode array recordings show synaptically driven network activity that develops through time from single unit spiking activity to global network bursting events. This activity is blocked by tetanus toxin and modified by antagonists of glutamatergic and GABAergic receptors suggesting tonic activity of excitatory and inhibitory synaptic signaling. The tissue-like properties of these cultures has been further demonstrated by their relative insensitivity to glutamate toxicity. Exposure to millimolar concentrations of glutamate for hours is necessary to produce significant excitotoxic neuronal death, as in vivo. We conclude that “Hi-Spots” are biological analogues of CNS tissue at a level of complexity that allows for detailed functional analyses of emergent neuronal network properties.

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Citation

Bailey, Joanne L., O’Connor, Vincent, Hannah, Matthew, Hewlett, Lindsay, Biggs, Thelma E., Sundstrom, Lars E., Findlay, Matt W. and Chad, John E. (2011) In vitro CNS tissue analogues formed by self-organisation of reaggregated post-natal brain tissue Journal of Neurochemistry, 117, (6), pp. 1020-1032. (doi:10.1111/j.1471-4159.2011.07276.x). (PMID:21592119).

More information

Accepted/In Press date: 12 April 2011
e-pub ahead of print date: 19 May 2011
Published date: June 2011
Keywords: electrophysiology, excitotoxicity, multi-electrode array, organotypic, synapse, tissue engineering
Organisations: Biological Sciences

Identifiers

Local EPrints ID: 185407
URI: http://eprints.soton.ac.uk/id/eprint/185407
ISSN: 0022-3042
PURE UUID: 954b64f8-ffab-4694-aaec-0a6531c52afb
ORCID for John E. Chad: ORCID iD orcid.org/0000-0001-6442-4281

Catalogue record

Date deposited: 10 May 2011 13:48
Last modified: 18 Jul 2017 11:49

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Contributors

Author: Joanne L. Bailey
Author: Vincent O’Connor
Author: Matthew Hannah
Author: Lindsay Hewlett
Author: Thelma E. Biggs
Author: Lars E. Sundstrom
Author: Matt W. Findlay
Author: John E. Chad ORCID iD

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