Up-regulation of matrix metallopeptidase 12 in motor neurons undergoing synaptic stripping

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dc.contributor.authorSajjan, Sen_AU
dc.contributor.authorHolsinger, RMDen_AU
dc.contributor.authorFok, Sen_AU
dc.contributor.authorEbrahimkhani, Sen_AU
dc.contributor.authorRollo, JLen_AU
dc.contributor.authorBanati, RBen_AU
dc.contributor.authorGraeber, MBen_AU
dc.date.accessioned2020-03-29T20:16:36Zen_AU
dc.date.available2020-03-29T20:16:36Zen_AU
dc.date.issued2014-08-22en_AU
dc.date.statistics2020-03-20en_AU
dc.description.abstractAxotomy of the rodent facial nerve represents a well-established model of synaptic plasticity. Post-traumatic “synaptic stripping” was originally discovered in this system. We report upregulation of matrix metalloproteinase MMP12 in regenerating motor neurons of the mouse and rat facial nucleus. Matrix metalloproteinases (matrix metallopeptidases, MMPs) are zinc-binding proteases capable of degrading components of the extracellular matrix and of regulating extracellular signaling networks including within synapses. MMP12 protein expression in facial motor neurons was enhanced following axotomy and peaked at day 3 after the operation. The peak of neuronal MMP12 expression preceded the peak of experimentally induced synaptic plasticity. At the same time, MMP12 redistributed intracellularly and became predominantly localized beneath the neuronal somatic cytoplasmic membrane. Both findings point to a role of MMP12 in the neuronal initiation of the synaptic stripping process. MMP12 is the first candidate molecule for such a trigger function and has potential as a therapeutic target. Moreover, since statins have been shown to increase the expression of MMP12, interference with synaptic stability may represent one mechanism by which these widely used drugs exert their side effects on higher CNS functions. © 2014 by Elsevier Ltd.en_AU
dc.identifier.citationSajjan, S., Holsinger, R. D., Fok, S., Ebrahimkhani, S., Rollo, J. L., Banati, R. B., & Graeber, M. B. (2014). Up-regulation of matrix metallopeptidase 12 in motor neurons undergoing synaptic stripping. Neuroscience, 274, 331-340. doi:10.1016/j.neuroscience.2014.05.052en_AU
dc.identifier.govdoc8875en_AU
dc.identifier.issn0306-4522en_AU
dc.identifier.journaltitleNeuroscienceen_AU
dc.identifier.pagination331-340en_AU
dc.identifier.urihttps://doi.org/10.1016/j.neuroscience.2014.05.052en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9284en_AU
dc.identifier.volume274en_AU
dc.language.isoenen_AU
dc.publisherElsevier B.V.en_AU
dc.subjectExtracellular spaceen_AU
dc.subjectMatrix isolationen_AU
dc.subjectNervesen_AU
dc.subjectEnzyme inhibitorsen_AU
dc.subjectMetalloproteinsen_AU
dc.subjectProteinsen_AU
dc.subjectNerve cellsen_AU
dc.subjectSomatic cellsen_AU
dc.subjectMembranesen_AU
dc.titleUp-regulation of matrix metallopeptidase 12 in motor neurons undergoing synaptic strippingen_AU
dc.typeJournal Articleen_AU
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