Cited by 114RNA Research and SplicingAmyotrophic Lateral Sclerosis ResearchRNA regulation and disease

Mutation of a U2 snRNA Gene Causes Global Disruption of Alternative Splicing and Neurodegeneration

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Jia, Yichang, Mu, John C., Ackerman, Susan L.·2012·Cell

Abstract

Although uridine-rich small nuclear RNAs (U-snRNAs) are essential for pre-mRNA splicing, little is known regarding their function in the regulation of alternative splicing or of the biological consequences of their dysfunction in mammals. Here, we demonstrate that mutation of Rnu2-8, one of the mouse multicopy U2 snRNA genes, causes ataxia and neurodegeneration. Coincident with the observed pathology, the level of mutant U2 RNAs was highest in the cerebellum and increased after granule neuron maturation. Furthermore, neuron loss was strongly dependent on the dosage of mutant and wild-type snRNA genes. Comprehensive transcriptome analysis identified a group of alternative splicing events, including the splicing of small introns, which were disrupted in the mutant cerebellum. Our results suggest that the expression of mammalian U2 snRNA genes, previously presumed to be ubiquitous, is spatially and temporally regulated, and dysfunction of a single U2 snRNA causes neuron degeneration through distortion of pre-mRNA splicing.

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Crossref · 10.1016/j.cell.2011.11.057

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  • Mutation of Rnu2-8 leads to specific neurodegeneration in the cerebellum.

    “mutation of Rnu2–8, which encodes part of a core spliceosomal component, the U2 small nuclear RNA (snRNA), leads to specific neurodegeneration in the cerebellum.”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [182]

  • NMF291 mice develop tremors at 8 weeks, progressing to truncal ataxia by 12 weeks.

    “and develop tremors at 8 weeks, progressing to truncal ataxia by 12 weeks.”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [182]

  • NMF291 mice show progressive and severe degeneration of the cerebellum as a result of the loss of cerebellar granule neurons beginning at postnatal week 4.

    “NMF291 mice show progressive and severe degeneration of the cerebellum as a result of the loss of cerebellar granule neurons beginning at postnatal week 4”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [182]

  • The NMF291 mutation is a 5nt deletion that removes the first 2nt of the branch site recognition sequence within the U2 snRNA, as well as a 3nt linker between the branch site recognition sequence and the U2/U6 helix IA.

    “The NMF291 mutation is a 5nt deletion that removes the first 2nt of the branch site recognition sequence within the U2 snRNA, as well as a 3nt linker between the branch site recognition sequence and the U2/U6 helix IA.”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [182]

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Authors
Jia, Y., Mu, J. C., & Ackerman, S. L.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Stanford University (US)
Corresponding author
Ackerman, Susan L.
Venue
Cell
Publisher
Elsevier BV
Published
2012-01
Volume
148
Issue
1-2
Pages
296-308
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2114706544
Cited by
114
References
59
Citations by year
2026: 5 · 2025: 11 · 2024: 8 · 2023: 7 · 2022: 6 · 2021: 8 · 2020: 13 · 2019: 7 · 2018: 5 · 2017: 8 · 2016: 7 · 2015: 8 · 2014: 9 · 2013: 5 · 2012: 7
FWCI
3.73
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
Funders
  • National Institutes of Health (R01HG004634, R01HG005717)
  • National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
U2 small nuclear RNA, alternative splicing, neurodegeneration, ataxia, cerebellum, granule neurons, pre-mRNA splicing, gene expression profiling, mouse mutations
MeSH terms
Animals, Ataxia, Base Sequence, Cerebellum, Molecular Sequence Data, Mutation, RNA, Small Nuclear, Mutagenesis, Sequence Alignment, Alternative Splicing, Neurodegenerative Diseases, Gene Expression Profiling, Mice

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