SRRM4-dependent neuron-specific alternative splicing of protrudin transcripts regulates neurite outgrowth

Takafumi Ohnishi, Michiko Shirane, Keiichi I. Nakayama

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

Alternative splicing gives rise to diversity of the proteome, and it is especially prevalent in the mammalian nervous system. Indeed, many factors that control the splicing process govern nervous system development. Among such factors, SRRM4 is an important regulator of aspects of neural differentiation including neurite outgrowth. The mechanism by which SRRM4 regulates neurite outgrowth has remained poorly understood, however. We now show that SRRM4 regulates the splicing of protrudin gene (Zfyve27) transcripts in neuronal cells. SRRM4 was found to promote splicing of protrudin pre-mRNA so as to include a microexon (exon L) encoding seven amino acids in a neuron-specific manner. The resulting protein (protrudin-L) promotes neurite outgrowth during neurogenesis. Depletion of SRRM4 in Neuro2A cells impaired inclusion of exon L in protrudin mRNA, resulting in the generation of a shorter protein isoform (protrudin-S) that is less effective at promoting neurite extension. SRRM4 was found to recognize a UGC motif that is located immediately upstream of exon L and is necessary for inclusion of exon L in the mature transcript. Deletion of exon L in Neuro2A or embryonic stem cells inhibited neurite outgrowth. Our results suggest that SRRM4 controls neurite outgrowth through regulation of alternative splicing of protrudin transcripts.

元の言語英語
記事番号41130
ジャーナルScientific reports
7
DOI
出版物ステータス出版済み - 1 20 2017

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Alternative Splicing
Exons
Neurons
Nervous System
RNA Precursors
Neurogenesis
Neurites
Proteome
Embryonic Stem Cells
Protein Isoforms
Neuronal Outgrowth
Amino Acids
Messenger RNA
Genes
Proteins

All Science Journal Classification (ASJC) codes

  • General

これを引用

SRRM4-dependent neuron-specific alternative splicing of protrudin transcripts regulates neurite outgrowth. / Ohnishi, Takafumi; Shirane, Michiko; Nakayama, Keiichi I.

:: Scientific reports, 巻 7, 41130, 20.01.2017.

研究成果: ジャーナルへの寄稿記事

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