自噬
神经再生
神经突
神经发生
神经干细胞
细胞生物学
干细胞
移植
神经退行性变
生物
神经科学
刺激
神经保护
医学
细胞凋亡
病理
内科学
体外
生物化学
疾病
作者
Liumin He,Zhongqing Sun,Jianshuang Li,Rong Zhu,Ben Niu,Ka Long Tam,Qiao Xiao,Jun Li,Xiaogang Wang,Chi-Ying Tsui,Vincent Wing Hong Lee,Kwok‐Fai So,Ying Xu,Seeram Ramakrishna,Qinghua Zhou,Kin Chiu
出处
期刊:Biomaterials
[Elsevier]
日期:2021-01-01
卷期号:268: 120585-120585
被引量:45
标识
DOI:10.1016/j.biomaterials.2020.120585
摘要
Neural stem cells (NSCs) transplantation at the injury site of central nerve system (CNS) makes it possible for neuroregeneration. Long-term cell survival and low proliferation, differentiation, and migration rates of NSCs-graft have been the most challenging aspect on NSCs application. New multichannel electrical stimulation (ES) device was designed to enhance neural stem cells (NSCs) differentiation into mature neurons. Compared to controls, ES at nanoscale topography enhanced the expression of mature neuronal marker, growth of the neurites, concentration of BDNF and electrophysiological activity. RNA sequencing analysis validated that ES promoted NSC-derived neuronal differentiation through enhancing autophagy signaling. Emerging evidences showed that insufficient or excessive autophagy contributes to neurite degeneration. Excessive ES current were able to enhance neuronal autophagy, the neuronal cells showed poor viability, reduced neurite outgrowth and electrophysiological activity. Well-controlled autophagy not only protects against neurodegeneration, but also regulates neurogenesis. Current NSC treatment protocol efficiently enhanced NSC differentiation, maturation and survival through combination of proper ES condition followed by balance of autophagy level in the cell culture system. The successful rate of such protreated NSC at injured CNS site should be significantly improved after transplantation.
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