A novel method of organotypic brain slice culture using connexin-specific antisense oligodeoxynucleotides to improve neuronal survival

Brain Research
Jinny Jung YoonColin R Green

Abstract

Organotypic slice cultures obtained from immature brain tissue represent a well-established model system for neuroscience research. Current culture methods, however, do not allow long-term culture of mature brain slices. Slice cultures from mature animals would provide an in vitro experimental environment suitable for investigation of neuropathologies, which in human, predominate in aged individuals. We hypothesized that damage, incurred by slicing of the brain, is propagated through intercellular connexin43 (Cx43) gap junction channels and that this damage is not easily repaired in mature central nervous system (CNS) tissue that lacks the pluripotency of immature tissue. We investigated the role of Cx43 gap junctions in long-term survival of mature brain tissue using antisense oligodeoxynucleotide (AsODN) technology. The application of Cx43 AsODN immediately after slicing of the mature brain led to a significant but transient knockdown of Cx43 protein. This treatment was associated with the long-term survival of hippocampal neurons with normal morphology within whole brain slices taken from 14 and 40-day-old adult rats.

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Citations

Mar 13, 2014·FEBS Letters·Christina L GrekGautam S Ghatnekar
Feb 22, 2018·International Journal of Molecular Sciences·Chrysovalantou FanikuPatricia E M Martin
Nov 15, 2017·Journal of Cell Communication and Signaling·Moises Freitas-AndradeWun Chey Sin
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Aug 11, 2017·Cellular and Molecular Neurobiology·Glaiza A TanAdil J Nazarali
Apr 11, 2012·Advanced Materials·Valentina DallacasagrandeS G Mayr
Sep 6, 2020·Journal of Neuroscience Methods·Nicholas A HodgesWalter L Murfee

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