Cited by 339RNA Research and SplicingEpilepsy research and treatmentNeuroscience and Neuropharmacology Research

The splicing regulator Rbfox1 (A2BP1) controls neuronal excitation in the mammalian brain

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Gehman, Lauren T, Stoilov, Peter, Maguire, Jamie, Damianov, Andrey, Lin, Chia-Ho, Shiue, Lily, Ares, Manuel, Mody, Istvan +1 more·2011·Nature Genetics

Abstract

The Rbfox family of RNA binding proteins regulates alternative splicing of many important neuronal transcripts, but its role in neuronal physiology is not clear. We show here that central nervous system-specific deletion of the gene encoding Rbfox1 results in heightened susceptibility to spontaneous and kainic acid-induced seizures. Electrophysiological recording revealed a corresponding increase in neuronal excitability in the dentate gyrus of the knockout mice. Whole-transcriptome analyses identified multiple splicing changes in the Rbfox1(-/-) brain with few changes in overall transcript abundance. These splicing changes alter proteins that mediate synaptic transmission and membrane excitation. Thus, Rbfox1 directs a genetic program required in the prevention of neuronal hyperexcitation and seizures. The Rbfox1 knockout mice provide a new model to study the post-transcriptional regulation of synaptic function.

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  • Disruption of alternative splicing can lead to neurological diseases in human and animal models.

    “previous studies have shown that disruption of alternative splicing can lead to neurological diseases in human and animal models (Buckanovich et al., 1996;Yang et al., 1998;Gehman et al., 2011)”
  • CaMKIV phosphorylation regulates RBFOX1 activity, and RBFOX1 controls alternative splicing and stability of many mRNAs involved in synaptic and neuronal signaling, including CAMK2G, GRIN1, CNTNAP2, NRCAM, and RBFOX1 itself.

    “For example, CaMKIV phosphorylation regulates the activity of RBFOX1, a factor that controls the alternative-splicing and stability of many mRNAs involved in synaptic and neuronal signaling, including CAMK2G, GRIN1, CNTNAP2, NRCAM and RBFOX1 itself (Gehman et al., 2011).”
  • RBFOX1 encodes a splicing regulator mainly expressed in neurons and known to target genes important for neuronal development, including NMDA receptor 1 and voltage-gated calcium channels.

    “RBFOX1 (also called A2BP1 ) encodes a splicing regulator mainly expressed in neurons and known to target several genes important to neuronal development, including NMDA receptor 1 and voltage-gated calcium channels (Gandal et al., 2018; Gehman et al., 2011; Hamada et al., 2015).”
  • CNS-specific depletion of Rbfox1 increases seizure susceptibility and neuronal over-excitability in the dentate gyrus.

    “Central nervous system (CNS)-specific depletion of Rbfox1 results in an increased susceptibility of mice to seizures and in over-excitability of neurons in the dentate gyrus (Gehman et al., 2011).”
  • WT versus Rbfox1 or Rbfox2 KO brain exon-junction microarray studies identified only 20 and 29 Rbfox-dependent exons, respectively.

    “Comparison of wild type (WT) versus Rbfox1 or Rbfox2 KO brains using exon-junction microarrays has identified multiple Rbfox-dependent exons (Gehman et al., 2012; Gehman et al., 2011). However, the number of exons identified using this approach is quite small (20 and 29 exons, respectively)”

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Authors
Gehman, L. T., Stoilov, P., Maguire, J., Damianov, A., Lin, C.-H., Shiue, L., Ares, M., Mody, I., & Black, D. L.
Affiliations
  • University of California, Los Angeles (US)
  • West Virginia University (US)
  • Tufts University (US)
  • University of California, Santa Cruz (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Black, Douglas L
Venue
Nature Genetics
Published
2011-05-29
Volume
43
Issue
7
Pages
706-711
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2085063270
Cited by
331
References
48
Citations by year
2026: 21 · 2025: 16 · 2024: 15 · 2023: 13 · 2022: 16 · 2021: 20 · 2020: 22 · 2019: 16 · 2018: 30 · 2017: 25 · 2016: 26 · 2015: 32 · 2014: 20 · 2013: 34 · 2012: 16
FWCI
9.38
Type
journal article
Language
en
Open access
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (NS30549)
  • University of California, San Diego
  • Institute of Molecular and Cell Biology
  • National Institute of Mental Health (R01MH076994)
  • National Institute of General Medical Sciences (R01GM084317, R01GM049369, R01GM049662)
  • National Institute of Neurological Disorders and Stroke (R37NS030549)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
RBFOX1, A2BP1, alternative splicing, RNA-binding proteins, neuronal excitability, seizures, kainic acid-induced seizures, spontaneous seizures, dentate gyrus, post-transcriptional regulation, synaptic transmission, splicing isoforms
MeSH terms
RNA Splicing Factors, Animals, Brain, Electrophysiology, Female, Gene Expression Regulation, Immunoenzyme Techniques, Kainic Acid, Male, Mice, Inbred C57BL, Synaptic Transmission, Neurons, RNA, Messenger, Seizures, Blotting, Western, Biomarkers, RNA-Binding Proteins, Apoptosis, Alternative Splicing, Mice, Knockout, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Cell Proliferation, Mice

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