Dual Oxidase Mutant Retards Mauthner-Cell Axon Regeneration at an Early Stage via Modulating Mitochondrial Dynamics in Zebrafish

Dual Oxidase Mutant Retards Mauthner-Cell Axon Regeneration at an Early Stage via Modulating Mitochondrial Dynamics in Zebrafish
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双氧化酶突变体通过调节斑马鱼线粒体动力学来延迟毛斯纳细胞轴突的早期再生。

DOI:
10.1007/s12264-020-00600-9
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发表时间:
2020-10
期刊:
Neurosci. Bull.
影响因子:
--
通讯作者:
Hu Bing
Hu Bing
中科院分区:
其他
文献类型:
--
作者:
Yang Lei-qing;Chen Min;Ren Da-long;Hu Bing

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双氧化酶(duox)衍生的活性氧(ROS)与神经元极性、小脑发育和神经可塑性有关。然而,关于个体二氧异构体对体内中枢轴突再生的影响,目前还没有很多全面的研究。在这里,我们在斑马鱼中探索了这个问题,斑马鱼是一种用于中枢轴突再生研究的优秀模式生物。在我们的研究中,CRISPR/Cas9双氧基因突变显著延缓了斑马鱼毛纳细胞体内单轴突的再生。通过深度转录组测序,我们发现线粒体中相关功能酶的表达水平下调。活体成像显示,双突变体显著破坏了毛氏细胞轴突的线粒体运输和氧化还原状态。我们的研究数据提供了如何通过改变线粒体运输参与中枢轴突再生的见解。
Dual oxidase (duox)-derived reactive oxygen species (ROS) have been correlated with neuronal polarity, cerebellar development, and neuroplasticity. However, there have not been many comprehensive studies of the effect of individualduoxisoforms on central-axon regenerationin vivo. Here, we explored this question in zebrafish, an excellent model organism for central-axon regeneration studies. In our research, mutation of theduoxgene with CRISPR/Cas9 significantly retarded the single-axon regeneration of the zebrafish Mauthner cellin vivo. Using deep transcriptome sequencing, we found that the expression levels of related functional enzymes in mitochondria were down-regulated induoxmutant fish.In vivoimaging showed thatduoxmutants had significantly disrupted mitochondrial transport and redox state in single Mauthner-cell axon. Our research data provide insights into howduoxis involved in central-axon regeneration by changing mitochondrial transport.
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