Ataxin-2 is essential for cytoskeletal dynamics and neurodevelopment in Drosophila.

Ataxin-2 is essential for cytoskeletal dynamics and neurodevelopment in Drosophila.
复制标题

DOI:
10.1016/j.isci.2021.103536
复制
发表时间:
2022-01-21
期刊:
影响因子:
5.8
通讯作者:
Gelfand VI
Gelfand VI
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Del Castillo U;Norkett R;Lu W;Serpinskaya A;Gelfand VI

文献摘要

参考文献

被引文献

相似文献

Ataxin-2(Atx 2)是一种高度保守的RNA结合蛋白。Atx 2经历多聚谷氨酰胺扩增,导致肌萎缩侧索硬化症(ALS)或脊髓小脑共济失调2型(SCA 2)。然而,Atx 2在神经元中的生理功能仍然未知。在这里,使用强大的遗传学的果蝇,我们表明,Atx 2是必不可少的正常神经元细胞骨架动力学和细胞器贩运。神经元特异性Atx 2丢失后,微管和肌动蛋白网络异常稳定,货物运输受到严重抑制。Atx 2的耗尽引起三龄幼虫神经系统的多个形态缺陷。这些包括脑体积减小、轴突发育受损和树突生长减少。神经系统的缺陷导致失去爬行能力,蛹期死亡。两者合计,这些数据标志着Atx 2作为一个主要的调节细胞骨架动力学,并表示Atx 2作为一个重要的基因在神经发育,以及神经退行性因子。Atx 2是神经元中细胞骨架的主要调节剂Atx 2负责维持动态细胞骨架网络Atx 2在果蝇幼虫CNS中的缺失严重损害细胞器运输Atx 2是果蝇中正确的神经突生长和CNS发育所必需的生物科学;神经科学;发育神经科学;细胞神经科学;细胞生物学;发育生物学
Ataxin-2 (Atx2) is a highly conserved RNA binding protein. Atx2 undergoes polyglutamine expansion leading to amyotrophic lateral sclerosis (ALS) or spinocerebellar ataxia type 2 (SCA2). However, the physiological functions of Atx2 in neurons remain unknown. Here, using the powerful genetics of Drosophila, we show that Atx2 is essential for normal neuronal cytoskeletal dynamics and organelle trafficking. Upon neuron-specific Atx2 loss, the microtubule and actin networks were abnormally stabilized and cargo transport was drastically inhibited. Depletion of Atx2 caused multiple morphological defects in the nervous system of third instar larvae. These include reduced brain size, impaired axon development, and decreased dendrite outgrowth. Defects in the nervous system caused loss of the ability to crawl and lethality at the pupal stage. Taken together, these data mark Atx2 as a major regulator of cytoskeletal dynamics and denote Atx2 as an essential gene in neurodevelopment, as well as a neurodegenerative factor. Atx2 is a major regulator of the cytoskeleton in neurons Atx2 is responsible for maintaining dynamic cytoskeletal networks Atx2 depletion in the Drosophila larval CNS severely impairs organelle transport Atx2 is necessary for correct neurite outgrowth and CNS development in Drosophila Biological sciences; Neuroscience; Developmental neuroscience; Cellular neuroscience; Cell biology; Developmental biology
DOI: 10.1093/bioinformatics/btu638
发表时间: 2015-01-15
期刊: Bioinformatics (Oxford, England)
影响因子: --
作者:
Anders S;Pyl PT;Huber W
通讯作者: Huber W
细胞因子过程中RhoA的时空调节。
DOI: 10.1016/j.cub.2018.03.045
发表时间: 2018-05-07
期刊: Current biology : CB
影响因子: --
作者:
Basant A;Glotzer M
通讯作者: Glotzer M
DOI: 10.1091/mbc.e16-04-0219
发表时间: 2016-10-15
影响因子: 3.3
作者:
Gnazzo, Megan M.;Uhlemann, Eva-Maria E.;Skop, Ahna R.
通讯作者: Skop, Ahna R.
DOI: 10.7554/elife.42288
发表时间: 2019-08-13
期刊: ELIFE
影响因子: 7.7
作者:
Jakobs, Maximilian A. H.;Dimitracopoulos, Andrea;Franze, Kristian
通讯作者: Franze, Kristian
DOI: 10.1111/tra.12647
发表时间: 2019-06-01
期刊: TRAFFIC
影响因子: 4.5
作者:
del Castillo,Urko;Gnazzo,Megan M.;Skop,Ahna R.
通讯作者: Skop,Ahna R.