Cited by 121RNA Research and SplicingDevelopmental Biology and Gene RegulationNeurogenesis and neuroplasticity mechanisms

Rbfox3-regulated alternative splicing of Numb promotes neuronal differentiation during development

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Kim, Kee K., Nam, Joseph, Mukouyama, Yoh-suke, Kawamoto, Sachiyo·2013·Journal of Cell Biology

Abstract

Alternative premRNA splicing is a major mechanism to generate diversity of gene products. However, the biological roles of alternative splicing during development remain elusive. Here, we focus on a neuron-specific RNA-binding protein, Rbfox3, recently identified as the antigen of the widely used anti-NeuN antibody. siRNA-mediated loss-of-function studies using the developing chicken spinal cord revealed that Rbfox3 is required to promote neuronal differentiation of postmitotic neurons. Numb premRNA encoding a signaling adaptor protein was found to be a target of Rbfox3 action, and Rbfox3 repressed the inclusion of an alternative exon via binding to the conserved UGCAUG element in the upstream intron. Depleting a specific Numb splice isoform reproduced similar neuronal differentiation defects. Forced expression of the relevant Numb splice isoform was sufficient to rescue, in an isoform-specific manner, postmitotic neurons from defects in differentiation caused by Rbfox3 depletion. Thus, Rbfox3-dependent Numb alternative splicing plays an important role in the progression of neuronal differentiation during vertebrate development.

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Crossref · 10.1083/jcb.201206146

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  • Together with neuro-developmental defects seen in cell cultures, animal models, and human patients with disrupted Rbfox proteins, this provides a compelling case that Rbfox proteins play critical roles in driving the global dynamic change of the developmental splicing-regulatory program.

    “Combined with neuro-developmental defects observed in cell cultures (Kim et al., 2013), animal models (Gehman et al., 2012; Gehman et al., 2011; Kim et al., 2013), and human patients (Bhalla et al., 2004) where Rbfox proteins are disrupted, this presents a compelling case for Rbfox proteins playing critical roles in driving the global dynamic change of the developmentalsplicing-regulatory program.”

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Authors
Kim, K. K., Nam, J., Mukouyama, Y.-S., & Kawamoto, S.
Affiliations
National Institutes of Health (US)
Corresponding author
Kawamoto, Sachiyo
Venue
Journal of Cell Biology
Published
2013-02-18
Volume
200
Issue
4
Pages
443-458
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2142550690
Cited by
120
References
41
Citations by year
2026: 3 · 2025: 11 · 2024: 5 · 2023: 21 · 2022: 8 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 10 · 2017: 10 · 2016: 12 · 2015: 11 · 2014: 9 · 2013: 2
FWCI
5.07
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute
  • NHLBI Division of Intramural Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
NeuN, Numb, alternative splicing, neuronal differentiation, RNA-binding proteins, postmitotic neurons, introns, splice variants, vertebrate development
MeSH terms
Animals, Binding Sites, Cell Line, Chick Embryo, DNA-Binding Proteins, Membrane Proteins, Nerve Tissue Proteins, Neurons, Nuclear Proteins, RNA Precursors, RNA, Messenger, Alternative Splicing, Protein Isoforms, Regulatory Elements, Transcriptional, Mice, Neural Tube, Neurogenesis

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