Cited by 336Alzheimer's disease research and treatmentsRNA Research and SplicingDementia and Cognitive Impairment Research

U1 small nuclear ribonucleoprotein complex and RNA splicing alterations in Alzheimer’s disease

Open access
Bai, Bing, Hales, Chadwick M., Chen, Ping-Chung, Gozal, Yair, Dammer, Eric B., Fritz, Jason J., Wang, Xusheng, Xia, Qiangwei +26 more·2013·Proceedings of the National Academy of Sciences

Abstract

Deposition of insoluble protein aggregates is a hallmark of neurodegenerative diseases. The universal presence of β-amyloid and tau in Alzheimer’s disease (AD) has facilitated advancement of the amyloid cascade and tau hypotheses that have dominated AD pathogenesis research and therapeutic development. However, the underlying etiology of the disease remains to be fully elucidated. Here we report a comprehensive study of the human brain-insoluble proteome in AD by mass spectrometry. We identify 4,216 proteins, among which 36 proteins accumulate in the disease, including U1-70K and other U1 small nuclear ribonucleoprotein (U1 snRNP) spliceosome components. Similar accumulations in mild cognitive impairment cases indicate that spliceosome changes occur in early stages of AD. Multiple U1 snRNP subunits form cytoplasmic tangle-like structures in AD but not in other examined neurodegenerative disorders, including Parkinson disease and frontotemporal lobar degeneration. Comparison of RNA from AD and control brains reveals dysregulated RNA processing with accumulation of unspliced RNA species in AD, including myc box-dependent-interacting protein 1, clusterin, and presenilin-1 . U1-70K knockdown or antisense oligonucleotide inhibition of U1 snRNP increases the protein level of amyloid precursor protein. Thus, our results demonstrate unique U1 snRNP pathology and implicate abnormal RNA splicing in AD pathogenesis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.1310249110

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Prior aggregated proteome analysis detected deposition of U1 snRNP and a deficit of RNA splicing in AD brain.

    “We performed a comprehensive analysis of the aggregated proteome, detecting the deposition of U1 small nuclear ribonucleoprotein (U1 snRNP) and a deficit of RNA splicing in AD brain (Bai et al., 2013; Lutz and Peng, 2018).”
  • RNA splicing deficits have previously been identified in AD brain and could impact transcription of many genes including tau, APP, and presenilins.

    “We and others have previously identified RNA splicing deficits in AD brain which could have profound impact on transcription of many genes, including tau, APP, and presenilins (Bai et al., 2013; Tollervey et al., 2011).”
  • U1 snRNPs are mislocalized in AD to the cytoplasm of neuronal cell bodies where they aggregate with NFTs and contribute to widespread alterations in RNA processing.

    “These ribonucleoproteins, constituents of the spliceosome complex responsible for RNA processing, are mislocalized in AD to the cytoplasm of neuronal cell bodies where they aggregate with NFTs and contribute to widespread alterations in RNA processing [134].”
  • Aggregation of U1 snRNPs with tau appears unique to the AD brain and absent among other primary tauopathies, such as FTLD.

    “this aggregation of U1 snRNPs with tau appears to be unique to the AD brain and absent among other primary tauopathies, such as FTLD [134, 138].”
  • U1 small nuclear ribonucleoproteins and other RNA-binding proteins are associated with tau tangles in the AD brain detergent-insoluble proteome.

    “previous analyses of the AD brain detergent-insoluble proteome, which have repeatedly demonstrated the association of U1 small nuclear ribonucleoproteins (U1 snRNPs) and other RNA-binding proteins with tau tangles [133–137].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 58 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Bai, B., Hales, C. M., Chen, P.-C., Gozal, Y., Dammer, E. B., Fritz, J. J., Wang, X., Xia, Q., Duong, D. M., Street, C., Cantero, G., Cheng, D., Jones, D. R., Wu, Z., Li, Y., Diner, I., Heilman, C. J., Rees, H. D., Wu, H., Lin, L., Szulwach, K. E., Gearing, M., Mufson, E. J., Bennett, D. A., Montine, T. J., Seyfried, N. T., Wingo, T. S., Sun, Y. E., Jin, P., Hanfelt, J., Willcock, D. M., Levey, A., Lah, J. J., & Peng, J.
Affiliations
  • St. Jude Children's Research Hospital (US)
  • Emory University (US)
  • Departments of Structural Biology and Developmental Neurobiology and
  • Human Genetics,
  • University of California, Los Angeles (US)
  • Biostatistics and Bioinformatics,
  • Rush University Medical Center (US)
  • University of Washington (US)
  • University of Kentucky (US)
Venue
Proceedings of the National Academy of Sciences
Published
2013-09-10
Volume
110
Issue
41
Pages
16562-16567
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2075426349
Cited by
335
References
58
Citations by year
2026: 20 · 2025: 34 · 2024: 23 · 2023: 29 · 2022: 23 · 2021: 43 · 2020: 29 · 2019: 24 · 2018: 27 · 2017: 24 · 2016: 30 · 2015: 12 · 2014: 17
FWCI
13.55
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • American Lebanese Syrian Associated Charities
  • National Institutes of Health
  • Instituto de Salud Carlos III
  • National Institute on Aging (P01AG014449, F32AG038259, R01AG015819, P30AG010161, R01AG043375, P50AG005136, P50AG025688)
  • National Institute of Mental Health (R01MH082068)
  • National Cancer Institute (P30CA021765)
  • National Institute of General Medical Sciences (P01GM081621, T32GM008169)
  • National Institute of Neurological Disorders and Stroke (T32NS007480, F32NS007480, P30NS055077, F30NS057902)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, U1 snRNP, U1-70K, RNA splicing, spliceosome, protein aggregates, amyloid precursor protein, unspliced RNA, mild cognitive impairment, antisense oligonucleotides, clusterin, presenilin 1, neurodegeneration
MeSH terms
Alzheimer Disease, Brain, Chromatography, Liquid, Fluorescent Antibody Technique, Humans, Immunohistochemistry, Blotting, Western, Spliceosomes, Alternative Splicing, Ribonucleoprotein, U1 Small Nuclear, Reverse Transcriptase Polymerase Chain Reaction, Proteome, Proteomics, Tandem Mass Spectrometry, High-Throughput Nucleotide Sequencing

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review