NF-κB is involved in brain repair by stem cell factor and granulocyte-colony stimulating factor in chronic stroke

被引:41
|
作者
Cui, Lili [1 ,2 ,3 ]
Duchamp, Nicolas S. [4 ]
Boston, Dakota J. [4 ]
Ren, Xuefang [2 ]
Zhang, Xiangjian [3 ]
Hu, Heng [2 ]
Zhao, Li-Ru [1 ,2 ,5 ]
机构
[1] SUNY Upstate Med Univ, Dept Neurosurg, Syracuse, NY 13210 USA
[2] Louisiana State Univ, Hlth Sci Ctr, Dept Neurol, Shreveport, LA 71130 USA
[3] Hebei Med Univ, Hosp 2, Dept Neurol, Shijiazhuang, Hebei, Peoples R China
[4] Louisiana State Univ, Sch Med, Shreveport, LA 71130 USA
[5] Louisiana State Univ, Hlth Sci Ctr, Dept Cellular Biol & Anat, Shreveport, LA 71130 USA
基金
美国国家卫生研究院;
关键词
Hematopoietic growth factors; SCF; G-CSF; NF-kappa B; Chronic stroke; Brain repair; MOTOR FUNCTION; PSD-95; RECOVERY; REORGANIZATION; DEFICIENT; SYSTEM; CORTEX; MICE;
D O I
10.1016/j.expneurol.2014.08.026
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Chronic stroke is the phase of brain recovery and repair generally beginning 3 months after stroke onset. No pharmaceutical approach is currently available to enhance brain repair in chronic stroke. We have previously determined the therapeutic effects of stem cell factor (SCF) and granulocyte-colony stimulating factor (G-CSF) alone or in combination (SCF + G-CSF) in an animal model of chronic stroke and demonstrated that only SCF + G-CSF induces long-term functional recovery. However, the mechanism underlying the SCF + G-CSF-induced brain repair in chronic stroke remains largely elusive. In the present study, we determined the role of nuclear factor-kappa B (NF-kappa B) in neurovascular network remodeling and motor function improvement by SCF + G-CSF treatment in chronic stroke. SCF + G-CSF was subcutaneously administered for 7 days beginning 17 weeks after induction of experimental stroke. To inhibit NF-kappa B activation, NF-kappa B inhibitor was infused into the brain before SCF + G-CSF treatment. We observed that NF-kappa B inhibitor abolished the SCF + G-CSF-induced axonal sprouting, synaptogenesis and angiogenesis in the ipsilesional somatosensorimotor cortex. In addition, blockage of NF-kappa B activation resulted in elimination of the SCF + G-CSF-induced motor functional restoration in chronic stroke. These data suggest that NF-KB is required for the SCF + G-CSF-induced neuron-vascular network remodeling in the ipsilesional somatosensorimotor cortex and motor functional recovery in chronic stroke. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码:17 / 27
页数:11
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