NEFLb impairs early nervous system development via regulation of neuron apoptosis in zebrafish

NEFLb impairs early nervous system development via regulation of neuron apoptosis in zebrafish
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NEFLb 通过调节斑马鱼神经元凋亡损害早期神经系统发育

DOI:
10.1002/jcp.27771
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发表时间:
2019-07
影响因子:
5.6
通讯作者:
Li Hongyan
Li Hongyan
中科院分区:
生物学2区
文献类型:
--
作者:
Wang Su;Ji Dongrui;Yang Qingyun;Li Mingyue;Ma Zengyu;Zhang Shicui;Li Hongyan

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神经丝轻链(NEFL)是神经丝的一个亚单位,在神经退行性疾病和轴突的放射状生长中起重要作用。然而,迄今为止,关于东北前线在早期发展中的作用的信息仍然很缺乏。在这项研究中,我们证明了斑马鱼中存在两个nefl基因,nefla和neflb,由鱼类特异性第三轮基因组复制产生。这些重复的nefl基因主要在神经系统中表达,具有重叠和独特的表达模式。基因敲除和拯救实验都表明,在神经系统发育中发挥不可或缺作用的是neflb而不是nefla。研究还发现,neflb基因敲低导致脑和脊髓中神经元的显著凋亡,导致脑结构紊乱和躯干弯曲等形态学缺陷。因此,我们报告了NEFL的一个先前未表征的作用,即NEFLb通过调节脑和脊髓中的神经元凋亡来损害斑马鱼神经系统的早期发育。
Neurofilament light chain (NEFL), a subunit of neurofilament, has been shown to play an important role in pathogenic neurodegenerative disease and in radial axonal growth. However, information remains largely lacking regarding the function of NEFL in early development to date. In this study, we demonstrated the presence of two nefl genes, nefla and neflb, in zebrafish, generated by fish‐specific third round genome duplication. These duplicated nefl genes were predominantly expressed in the nervous system with an overlapping and distinct expression pattern. Both gene knockdown and rescue experiments show that it was neflb rather than nefla that played an indispensable role in nervous system development. It was also found that neflb knockdown resulted in striking apoptosis of the neurons in the brain and spinal cord, leading to morphological defects such as brain structure disorder and trunk bending. Thus, we report a previously uncharacterized role of NEFL that NEFLb impairs the early development of zebrafish nervous system via regulation of the neuron apoptosis in the brain and spinal cord.
DOI: 10.12688/f1000research.6160.1
发表时间: 2015
期刊: F1000Research
影响因子: --
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Ekins S;Litterman NK;Arnold RJ;Burgess RW;Freundlich JS;Gray SJ;Higgins JJ;Langley B;Willis DE;Notterpek L;Pleasure D;Sereda MW;Moore A
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发表时间: 2005-06-15
影响因子: 4.2
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