The centrosomal E3 ubiquitin ligase FBXO31-SCF regulates neuronal morphogenesis and migration.

The centrosomal E3 ubiquitin ligase FBXO31-SCF regulates neuronal morphogenesis and migration.
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DOI:
10.1371/journal.pone.0057530
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Stegmüller J
Stegmüller J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Vadhvani M;Schwedhelm-Domeyer N;Mukherjee C;Stegmüller J

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神经元的发育需要适当的轴突和树突的迁移、极化和建立。越来越多的证据表明,泛素蛋白酶体系统(UPS)及其众多成分是神经元发育的各个方面的重要调节因子。F-box蛋白是基于cullin-1的E3泛素连接酶的可互换亚基,但仅有少数家族成员被研究过。在这里,我们报道了中心体E3连接酶FBXO31-SCF(Skp1/cullin-1/F-box蛋白)调节神经元的形态发生和轴突识别。此外,我们确定了极性蛋白Par6c是一种新的相互作用伙伴和底物,目的是在控制轴突而不是树突生长的过程中降解蛋白酶体。最后,我们归因于FBXO31在发育中的小脑皮质中的树突生长和神经元迁移中的作用。综上所述,我们发现中心体E3连接酶FBXO31-SCF是一种新的神经元发育调节因子。
Neuronal development requires proper migration, polarization and establishment of axons and dendrites. Growing evidence identifies the ubiquitin proteasome system (UPS) with its numerous components as an important regulator of various aspects of neuronal development. F-box proteins are interchangeable subunits of the Cullin-1 based E3 ubiquitin ligase, but only a few family members have been studied. Here, we report that the centrosomal E3 ligase FBXO31-SCF (Skp1/Cullin-1/F-box protein) regulates neuronal morphogenesis and axonal identity. In addition, we identified the polarity protein Par6c as a novel interaction partner and substrate targeted for proteasomal degradation in the control of axon but not dendrite growth. Finally, we ascribe a role for FBXO31 in dendrite growth and neuronal migration in the developing cerebellar cortex. Taken together, we uncovered the centrosomal E3 ligase FBXO31-SCF as a novel regulator of neuronal development.
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