Cited by 91Systemic Lupus Erythematosus ResearchGenomics and Chromatin DynamicsT-cell and B-cell Immunology

Protein phosphatase 2A enables expression of interleukin 17 (IL-17) through chromatin remodeling

Open access
Apostolidis, Sokratis A., Rauen, Thomas, Hedrich, Christian M., Tsokos, George C., Crispín, José C.·2013·Journal of Biological Chemistry

Abstract

Protein phosphatase 2A (PP2A) is a heterotrimeric serine/threonine phosphatase involved in essential cellular functions. T cells from patients with systemic lupus erythematosus (SLE) express high levels of the catalytic subunit of PP2A (PP2Ac). A mouse overexpressing PP2Ac in T cells develops glomerulonephritis in an IL-17-dependent manner. Here, using microarray analyses, we demonstrate that increased expression of PP2Ac grants T cells the capacity to produce an array of proinflammatory effector molecules. Because IL-17 is important in the expression of glomerulonephritis, we studied the mechanism through which PP2Ac dysregulation facilitates its production. We report that PP2Ac is involved in the regulation of the Il17 locus by enhancing histone 3 acetylation through a mechanism that involves activation of interferon regulatory factor 4. Increased histone 3 acetylation of the Il17 locus is shared between T cells of PP2Ac transgenic mice and patients with SLE. We propose that, by promoting the inflammatory capacity of T cells, PP2Ac dysregulation contributes to the pathogenesis of SLE. Background: Increased PP2A levels have been linked to autoimmunity in SLE patients and transgenic mice. Results: In T cells, PP2A overexpression increases the transcription of proinflammatory genes and facilitates chromatin accessibility at the Il17 locus. Conclusion: Increased levels of PP2A promote the inflammatory capacity of T cells. Significance: PP2A dysregulation may contribute to SLE by directly affecting lymphocyte gene expression.

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 · 10.1074/jbc.m113.483743

Cites

71 of 71 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?

  • Microarray analysis in naive and activated CD4+ T-cells from this model revealed 124 upregulated and only 6 downregulated genes, with upregulated genes primarily encoding cytokines and chemokines, including IL-17.

    “Additional microarray analysis in naïve and activated CD4 + T-cells from this model, revealed 124 upregulated and only 6 downregulated genes, with the upregulated genes primarily encoding cytokines and chemokines, including IL-17 [86].”
  • Increased Histone H3 acetylation at Il17a and Il17b loci, alongside increased recruitment of IRF4, implies a role for PP2A in epigenetic regulation in T-cells.

    “Mechanistically, increased Histone H3 acetylation at Il17a and Il17b loci was detected, alongside increased recruitment of IRF4, implying a role for PP2A in epigenetic regulation in T-cells.”

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

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Apostolidis, S. A., Rauen, T., Hedrich, C. M., Tsokos, G. C., & Crispín, J. C.
Affiliations
Beth Israel Deaconess Medical Center (US)
Corresponding author
  • Tsokos, George C.
  • Crispín, José C.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2013-09
Volume
288
Issue
37
Pages
26775-26784
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2038119991
Cited by
91
References
70
Citations by year
2026: 2 · 2025: 4 · 2024: 8 · 2023: 7 · 2022: 7 · 2021: 10 · 2020: 10 · 2019: 9 · 2018: 8 · 2017: 7 · 2016: 12 · 2015: 6 · 2014: 1
FWCI
5.20
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Funders
  • Lupus Research Alliance
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (R01AI068787)
Topics
  • Health Sciences › Medicine › Rheumatology › Systemic Lupus Erythematosus Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
protein phosphatase 2A, IL-17, systemic lupus erythematosus, T cells, histone H3 acetylation, chromatin remodeling, IRF4, glomerulonephritis, autoimmunity, pro-inflammatory gene expression, chromatin accessibility
MeSH terms
Animals, Chromatin, Gene Expression Regulation, Histones, Inflammation, Lupus Erythematosus, Systemic, Mice, Inbred C57BL, Mice, Transgenic, T-Lymphocytes, Catalytic Domain, Interleukin-17, Oligonucleotide Array Sequence Analysis, Chromatin Assembly and Disassembly, Mice, rho-Associated Kinases, Protein Phosphatase 2

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