Cited by 145Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsGenetic Associations and Epidemiology

CD33: increased inclusion of exon 2 implicates the Ig V-set domain in Alzheimer’s disease susceptibility

Open access
Raj, T., Ryan, K. J., Replogle, J. M., Chibnik, L. B., Rosenkrantz, L., Tang, A., Rothamel, K., Stranger, B. E. +4 more·2014·Human Molecular Genetics

Abstract

We previously demonstrated that the Alzheimer's disease (AD) associated risk allele, rs3865444(C), results in a higher surface density of CD33 on monocytes. Here, we find alternative splicing of exon 2 to be the primary mechanism of the genetically driven differential expression of CD33 protein. We report that the risk allele, rs3865444(C), is associated with greater cell surface expression of CD33 in both subjects of European and African-American ancestry and that there is a single haplotype influencing CD33 surface expression. A meta-analysis of the two populations narrowed the number of significant SNPs in high linkage disequilibrium (LD) (r(2) > 0.8) with rs3865444 to just five putative causal variants associated with increased protein expression. Using gene expression data from flow-sorted CD14(+)CD16(-) monocytes from 398 healthy subjects of three populations, we show that the rs3865444(C) risk allele is strongly associated with greater expression of CD33 exon 2 (pMETA = 2.36 × 10(-60)). Western blotting confirms increased protein expression of the full-length CD33 isoform containing exon 2 relative to the rs3865444(C) allele (P < 0.0001). Of the variants in strong LD with rs3865444, rs12459419, which is located in a putative SRSF2 splice site of exon 2, is the most likely candidate to mediate the altered alternative splicing of CD33's Immunoglobulin V-set domain 2 and ultimately influence AD susceptibility.

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 · 10.1093/hmg/ddt666

Cites

27 of 27 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?

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

Cited by

Sorted by citations

Authors
Raj, T., Ryan, K. J., Replogle, J. M., Chibnik, L. B., Rosenkrantz, L., Tang, A., Rothamel, K., Stranger, B. E., Bennett, D. A., Evans, D. A., De Jager, P. L., & Bradshaw, E. M.
Affiliations
  • Broad Institute (US)
  • Brigham and Women's Hospital (US)
  • University of Chicago (US)
  • Rush University Medical Center (US)
Corresponding author
Bradshaw, E. M.
Venue
Human Molecular Genetics
Published
2013-12-30
Volume
23
Issue
10
Pages
2729-2736
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2161428211
Cited by
144
References
27
Citations by year
2026: 3 · 2025: 7 · 2024: 13 · 2023: 10 · 2022: 18 · 2021: 20 · 2020: 18 · 2019: 13 · 2018: 9 · 2017: 9 · 2016: 9 · 2015: 7 · 2014: 8
FWCI
5.56
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG017917, P30-AG 10161, K25AG041906, R01AG030146, R01 AG30146, R01‐AG17917, R01 AG15819, R01AG11101, R01AG011101, R01AG043617, R01AG015819, P30AG010161, F32AG043267, R01AG031553)
  • National Institute of General Medical Sciences (RC2GM093080)
  • National Institute of Neurological Disorders and Stroke (R01NS067305)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
CD33, Alzheimer's disease, alternative splicing, exon 2, monocytes, cell surface expression, haplotypes, linkage disequilibrium, SRSF2, genetic susceptibility, CD14+CD16+ monocytes
MeSH terms
Alzheimer Disease, Black or African American, Exons, Humans, Linkage Disequilibrium, Case-Control Studies, Alternative Splicing, Sequence Analysis, DNA, Protein Structure, Tertiary, Genetic Predisposition to Disease, Protein Isoforms, Polymorphism, Single Nucleotide, White People, Genetic Association Studies, Sialic Acid Binding Ig-like Lectin 3

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