The Angelman Syndrome Protein Ube3a Is Required for Polarized Dendrite Morphogenesis in Pyramidal Neurons

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	The Angelman Syndrome Protein Ube3a Is Required for Polarized Dendrite Morphogenesis in Pyramidal Neurons
	Miao, S ; Chen, RC ; Ye, JH ; Tan, GH ; Li, S ; Zhang, J ; Jiang, YH ; Xiong, ZQ
刊名	JOURNAL OF NEUROSCIENCE
	2013
卷号	33 期号:1 页码:327-333
关键词	UBIQUITIN LIGASE E6-ASSOCIATED PROTEIN CEREBRAL-CORTEX GENE-TRANSFER MIGRATION SYNAPSE ELECTROPORATION DEGRADATION ORIENTATION NEOCORTEX
ISSN号	0270-6474
通讯作者	Xiong, ZQ (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Neurosci, 320 Yueyang Rd, Shanghai 200031, Peoples R China.,xiongzhiqi@ion.ac.cn
英文摘要	Pyramidal neurons have a highly polarized dendritic morphology, characterized by one long apical dendrite and multiple short basal dendrites. They function as the primary excitatory cells of the mammalian prefrontal cortex and the corticospinal tract. However, the molecular mechanisms underlying the development of polarized dendrite morphology in pyramidal neurons remain poorly understood. Here, we report that the Angelman syndrome (AS) protein ubiquitin-protein ligase E3A (Ube3a) plays an important role in specifying the polarization of pyramidal neuron dendritic arbors in mice. shRNA-mediated downregulation of Ube3a selectively inhibited apical dendrite outgrowth and resulted in impaired dendrite polarity, which could be rescued by coexpressing mouse Ube3a isoform 2, but not isoform 1 or 3. Ube3a knockdown also disrupted the polarized distribution of the Golgi apparatus, a well established cellular mechanism for asymmetric dendritic growth in pyramidal neurons. Furthermore, downregulation of Ube3a completely blocked Reelin-induced rapid deployment of Golgi into dendrite. Consistently, we also observed selective inhibition of apical dendrite outgrowth in pyramidal neurons in a mouse model of AS. Overall, these results show that Ube3a is required for the specification of the apical dendrites and dendrite polarization in pyramidal neurons, and suggest a novel pathological mechanism for AS.
学科主题	Neurosciences & Neurology
收录类别	SCI
资助信息	973 Program [2011CBA00400]; National Natural Science Foundation of China [30925016, 31123002, 31021063]; Chinese Academy of Sciences [XDA01020305]
语种	英语
公开日期	2013-06-04
内容类型	期刊论文
源URL	[http://ir.sibs.ac.cn/handle/331001/2529]
专题	上海神经科学研究所_神经所(总)
推荐引用方式 GB/T 7714	Miao, S,Chen, RC,Ye, JH,et al. The Angelman Syndrome Protein Ube3a Is Required for Polarized Dendrite Morphogenesis in Pyramidal Neurons[J]. JOURNAL OF NEUROSCIENCE,2013,33(1):327-333.
APA	Miao, S.,Chen, RC.,Ye, JH.,Tan, GH.,Li, S.,...&Xiong, ZQ.(2013).The Angelman Syndrome Protein Ube3a Is Required for Polarized Dendrite Morphogenesis in Pyramidal Neurons.JOURNAL OF NEUROSCIENCE,33(1),327-333.
MLA	Miao, S,et al."The Angelman Syndrome Protein Ube3a Is Required for Polarized Dendrite Morphogenesis in Pyramidal Neurons".JOURNAL OF NEUROSCIENCE 33.1(2013):327-333.