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Chen, Tao; Yu, Yan; Tang, Liu-Jiu; Kong, Li; Zhang, Cheng-Hong; Chu, Hai-Ying; Yin, Liang-Wei; Ma, Hai-Ying
Neural regeneration research, 03/2017, Volume: 12, Issue: 3Journal Article
Cytoskeletal proteins are involved in neuronal survival.Brain-derived neurotrophic factor can increase expression of cytoskeletal proteins during regeneration after axonal injury.However,the effect of neural stem cells genetically modified by brain-derived neurotrophic factor transplantation on neuronal survival in the injury site still remains unclear.To examine this,we established a rat model of traumatic brain injury by controlled cortical impact.At 72 hours after injury,2 × 10~7 cells/m L neural stem cells overexpressing brain-derived neurotrophic factor or naive neural stem cells(3 m L) were injected into the injured cortex.At 1–3 weeks after transplantation,expression of neurofilament 200,microtubule-associated protein 2,actin,calmodulin,and beta-catenin were remarkably increased in the injury sites.These findings confirm that brain-derived neurotrophic factor-transfected neural stem cells contribute to neuronal survival,growth,and differentiation in the injury sites.The underlying mechanisms may be associated with increased expression of cytoskeletal proteins and the Wnt/β-catenin signaling pathway.
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