Sandra Donnini, Raffaella Solito, Martina Monti, Walter Balduini, Silvia Carloni, Mauro Cimino, Edward T W Bampton, Lucia G P Pinon, Pierluigi Nicotera, Philip E Thorpe, Marina Ziche
Cell cycle (Georgetown, Tex.) 2009 Apr 15In acute thromboembolic stroke, neurological damage is due to ischemia-induced apoptotic death of neuronal cells and the surrounding vascular network. Here, we demonstrate that the BH4 domain of the anti-apoptotic protein, Bcl-x(L), attached to the membrane transport peptide, TAT, reduces stroke injury after intracerebroventricular infusion into immature rats subjected to carotid artery ligation and additional exposure to hypoxia. The injected TAT-BH4 entered neuron bodies, maintained brain architecture, protected neuronal and endothelial cells from apoptosis and promoted neuronal stem cell recruitment. In vitro, TAT-BH4 enhanced the survival of endothelial cells exposed to H(2)O(2), increased neuronal differentiation, and induced axonal remodelling of adult neuronal stem cells. These findings indicate that TAT-BH4 administration protects against acute hypoxia/ischemia injury in the brain by preventing endothelial and neuron cell apoptosis and by inducing neuronal plasticity.
Sandra Donnini, Raffaella Solito, Martina Monti, Walter Balduini, Silvia Carloni, Mauro Cimino, Edward T W Bampton, Lucia G P Pinon, Pierluigi Nicotera, Philip E Thorpe, Marina Ziche. Prevention of ischemic brain injury by treatment with the membrane penetrating apoptosis inhibitor, TAT-BH4. Cell cycle (Georgetown, Tex.). 2009 Apr 15;8(8):1271-8
PMID: 19305142
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