Cited by 401Protein Tyrosine PhosphatasesProtein Kinase Regulation and GTPase SignalingPI3K/AKT/mTOR signaling in cancer

Protein phosphatase 2A: a target for anticancer therapy

Open access
Perrotti, Danilo, Neviani, Paolo·2013·The Lancet Oncology

Abstract

Protein phosphatase 2A (PP2A), one of the main serine-threonine phosphatases in mammalian cells, maintains cell homoeostasis by counteracting most of the kinase-driven intracellular signalling pathways. Unrestrained activation of oncogenic kinases together with inhibition of tumour suppressors is often required for development of cancer. PP2A has been shown to be genetically altered or functionally inactivated in many solid cancers and leukaemias, and is therefore a tumour suppressor. For example, the phosphatase activity of PP2A is suppressed in chronic myeloid leukaemia and other malignancies characterised by aberrant activity of oncogenic kinases. Preclinical studies show that pharmacological restoration of PP2A tumour-suppressor activity by PP2A-activating drugs (eg, FTY720) effectively antagonises cancer development and progression. Here, we discuss PP2A as a druggable tumour suppressor in view of the possible introduction of PP2A-activating drugs into anticancer therapeutic protocols.

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 · 10.1016/s1470-2045(12)70558-2

Cites

100 of 100 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?

  • PP2A complex components are mutated at a relatively low frequency in most types of human cancer.

    “PP2A complex components are mutated at a relatively low frequency in most types of human cancer”

    From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [2]

    Section 3, “PP2A in disease and cancer” (page unavailable), reports PR65β mutations in 13–15% of several primary cancers and PR65α alterations in 6.7–19.2% of several tumor categories. These figures support relatively low frequencies in the examples given, but the passage does not establish that PP2A complex components generally are mutated at low frequency in most types of human cancer; it also reports PR65α alterations in 43% of primary gliomas. (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • CIP2A is the most prevalent oncoprotein among PP2A inhibitor proteins.

    “Among them, cancerous inhibitor of PP2A (CIP2A) is the most prevalent oncoprotein”

    From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [2]

    Section 3, “PP2A in disease and cancer” (page unavailable), says CIP2A inhibits PP2A and is overexpressed in various malignancies. It does not compare CIP2A’s prevalence with other PP2A inhibitors, so the claim that it is the most prevalent is unsupported. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Reactivation of PP2A is an attractive novel approach in cancer therapy.

    “This establishes the reactivation of PP2A as an attractive novel approach in cancer therapy [2,6]”
  • PP2A inhibition promotes the various malignant characteristics of human cancer cells.

    “whereas its inhibition promotes the various malignant characteristics of human cancer cells [1,2]”
  • Restoring PP2A activity, for example with FTY720 in leukemia, can counteract cancer, while transient PP2A inhibition, for example with LB100 in GBM, may sensitize tumors to therapy.

    “Restoring PP2A activity (e.g., with FTY720 in leukemia) can counteract cancer, while transient PP2A inhibition (e.g., LB100 in GBM) may sensitize tumors to therapy [ 180 ].”

    From Targeting PP2A in cancer: an underrated option (2025) · cites this paper as [180]

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

3 of the 103 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Perrotti, D., & Neviani, P.
Affiliations
The Ohio State University (US)
Corresponding author
Perrotti, Danilo
Venue
The Lancet Oncology
Publisher
Elsevier BV
Published
2013-05
Volume
14
Issue
6
Pages
e229-e238
ISSN
1470-2045 (ISSN-L)
OpenAlex
W1987474302
Cited by
400
References
103
Citations by year
2026: 13 · 2025: 17 · 2024: 16 · 2023: 33 · 2022: 31 · 2021: 26 · 2020: 33 · 2019: 35 · 2018: 29 · 2017: 37 · 2016: 62 · 2015: 29 · 2014: 28 · 2013: 11
FWCI
3.99
Type
journal article
Language
en
Open access
Locations
  • The Lancet Oncology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (P50CA140158, R01CA163800, R01CA095512, P30CA016058)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
protein phosphatase 2A, tumour suppressor, cancer therapy, fingolimod, oncogenic kinase, serine/threonine phosphatase, chronic myeloid leukemia, therapeutic target
MeSH terms
Animals, Antineoplastic Agents, Enzyme Activation, Humans, Neoplasms, Drug Design, Signal Transduction, Enzyme Activators, Protein Phosphatase 2, Molecular Targeted Therapy

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