A model for ex vivo spinal cord segment culture--a tool for analysis of injury repair strategies

Journal of Neuroscience Methods
Jie ZhangColin R Green

Abstract

Most spinal cord injury research is undertaken using in vivo animal models but the extensive care associated with spinalized animals, inherent variability between animals, and complex surgeries makes alternative models especially valuable. Here we present a novel ex vivo model that enables culture of intact post-natal spinal cord segments for up to five days and the assessment of peripheral nerve grafting repair, enhanced with connexin43 antisense oligodeoxynucleotides (Cx43 AsODN), in this model. Down-regulating Cx43 expression with Cx43 AsODN in cultured spinal cord segments prevents cell death and inhibits inflammation spreading from the site of injury to neighbouring tissue, hence maintaining culture viability. Reduction in segment swelling and improvement in neuron survival were evident after Cx43 AsODN treatment. Furthermore, the combination of Cx43 AsODN with peripheral nerve graft implants into cultured spinal cords promoted axon sprouting from the spinal cord into the peripheral nerve graft. This ex vivo spinal cord segment culture model provides a valuable addition to tools currently available for spinal cord injury research.

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Citations

Feb 22, 2012·Brain : a Journal of Neurology·Helen V Danesh-MeyerColin R Green
Oct 27, 2012·International Journal of Pharmaceutics·Keng-Chih LiuIlva D Rupenthal
Jan 23, 2015·Frontiers in Molecular Neuroscience·Ryan S TonkinGila Moalem-Taylor
Jun 25, 2019·Channels·Christos PapaneophytouKleopas A Kleopa
Sep 22, 2017·Pharmacological Reviews·Luc LeybaertRainer Schulz

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