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Caspase inhibition impaired the neural stem/progenitor cell response after cortical ischemia in mice

Journal article
Authors A. M. Osman
Susanne Neumann
Hans-Georg Kuhn
Klas Blomgren
Published in Oncotarget
Volume 7
Issue 3
Pages 2239-2248
ISSN 1949-2553
Publication year 2016
Published at Institute of Neuroscience and Physiology
Pages 2239-2248
Language en
Links dx.doi.org/10.18632/oncotarget.6803
https://gup.ub.gu.se/file/188075
Keywords stroke, neurogenesis, migration, Q-VD-OPh, neuroinflammation, Q-VD-OPH, STROKE-INDUCED NEUROGENESIS, FOCAL CEREBRAL-ISCHEMIA, ADULT, BRAIN, MIGRATION, INJURY, REPLACEMENT, ACTIVATION, PRECURSORS, EXPRESSION
Subject categories Cell and Molecular Biology

Abstract

Cortical ischemia induces proliferation of neural stem/progenitor cells (NSPCs) in the subventricular zone (SVZ) and provokes migration of these cells toward the injured area. Despite sustained migration of NSPCs for an extended period of time after injury, they do not appear to survive. Here, we hypothesized that the antiapoptotic broad-spectrum caspase inhibitor Q-VD-OPh would increase NSPC survival in the injured cortex. However, contrary to our expectations, caspase inhibition did not promote NSPC survival and cortical neurogenesis. On the contrary, it abolished ischemia-induced proliferation and decreased the number of migrating neuroblasts in the injured cortex. Moreover, caspase inhibition decreased the levels of the chemoattractant chemokine CCL2 (MCP-1) and the pro-inflammatory cytokine IL-1 beta. We hence for the first time show that caspase inhibition abrogates the response of NSPCs to an ischemic injury, presumably by inhibiting the production of pro-inflammatory factors. Thus, caution is warranted if anti-apoptotic strategies are applied for neuroprotection.

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Denna text är utskriven från följande webbsida:
http://www.gu.se/english/research/publication/?publicationId=233494
Utskriftsdatum: 2019-11-22