Rbfox Splicing Factors Promote Neuronal Maturation and Axon Initial Segment Assembly.
Rbfox Splicing Factors Promote Neuronal Maturation and Axon Initial Segment Assembly.
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DOI:
10.1016/j.neuron.2018.01.020
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发表时间:
2018-02-21
期刊:
影响因子:
16.2
通讯作者:
Zhang C
中科院分区:
文献类型:
--
作者:
Jacko M;Weyn-Vanhentenryck SM;Smerdon JW;Yan R;Feng H;Williams DJ;Pai J;Xu K;Wichterle H;Zhang C
Neuronal maturation requires dramatic morphological and functional changes, but the molecular mechanisms governing this process are not well understood. Here, we studied the role of Rbfox1-3 proteins, a family of tissue-specific splicing regulators mutated in multiple neurodevelopmental disorders. We generated Rbfox triple knockout (tKO) ventral spinal neurons to define a comprehensive network of alternative exons under Rbfox regulation and to investigate their functional importance in the developing neurons. Rbfox tKO neurons exhibit defects in alternative splicing of many cytoskeletal, membrane, and synaptic proteins, and display immature electrophysiological activity. The axon initial segment (AIS), a subcellular structure important for action potential initiation, is diminished upon Rbfox depletion. We identified an Rbfox-regulated splicing switch in ankyrin G, the AIS “interaction hub” protein, that regulates ankyrin G-beta spectrin affinity and AIS assembly. Our data show that the Rbfox-regulated splicing program plays a crucial role in structural and functional maturation of postmitotic neurons. Jacko et al. identified a comprehensive neuronal Rbfox splicing program, enriched for cytoskeletal, membrane, and synaptic genes. Rbfox1/2/3 triple knockout motor neurons exhibit defects in excitability and axon initial segment assembly, regulated by a developmental splicing switch in Ankyrin G.
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影响因子:
11.8
作者:
Carreira-Rosario A;Bhargava V;Hillebrand J;Kollipara RK;Ramaswami M;Buszczak M
通讯作者:
Buszczak M
影响因子:
64.5
作者:
Galiano MR;Jha S;Ho TS;Zhang C;Ogawa Y;Chang KJ;Stankewich MC;Mohler PJ;Rasband MN
通讯作者:
Rasband MN
DOI:
10.1083/jcb.200110003
发表时间:
2002-01-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Komada M;Soriano P
通讯作者:
Soriano P
DOI:
10.1073/pnas.1416544112
发表时间:
2015-01-27
影响因子:
11.1
作者:
Jenkins, Paul M.;Kim, Namsoo;Bennett, Vann
通讯作者:
Bennett, Vann
影响因子:
3.5
作者:
Bhalla, K;Phillips, HA;Callen, DF
通讯作者:
Callen, DF