Multiple pathways regulated by the tumor suppressor PP2A in transformation
Abstract
Reversible protein phosphorylation plays a central role in regulating intracellular signaling. Dysregulation of the mechanisms that regulate phosphorylation plays a direct role in cancer initiation and maintenance. Although abundant evidence supports the role of kinase oncogenes in cancer development, recent work has illuminated the role of specific protein phosphatases in malignant transformation. Protein phosphatase 2A (PP2A) is the major serine-threonine phosphatase in mammalian cells. Inactivation of PP2A by viral oncoproteins, mutation of specific subunits or overexpression of endogenous inhibitors contributes to cell transformation by regulating specific phosphorylation events. Here, we review recent progress in our understanding of how PP2A regulates mitogenic signaling pathways in cancer pathogenesis and how PP2A activity is modulated in human cancers.
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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]”
From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [1]
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- Authors
- Westermarck, J., & Hahn, W. C.
- Affiliations
- Tampere University Hospital (FI)
- Broad Institute (US)
- Venue
- Trends in Molecular Medicine
- Publisher
- Elsevier BV
- Published
- 2008-04
- Volume
- 14
- Issue
- 4
- Pages
- 152-160
- ISSN
- 1471-4914 (ISSN-L)
- OpenAlex
- W1972236331
- Cited by
- 344
- References
- 114
- Citations by year
- 2026: 4 · 2025: 15 · 2024: 9 · 2023: 19 · 2022: 6 · 2021: 15 · 2020: 11 · 2019: 21 · 2018: 21 · 2017: 21 · 2016: 25 · 2015: 31 · 2014: 36 · 2013: 24 · 2012: 30
- FWCI
- 1.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Trends in Molecular Medicine (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Cancer Institute (P01 CA 50661, P01CA050661)
- 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, tumor suppressor, malignant transformation, reversible protein phosphorylation, serine/threonine phosphatase, carcinogenesis, viral oncoproteins, PP2A inhibitors
- MeSH terms
- Animals, Cell Transformation, Neoplastic, Humans, Signal Transduction, Oncogene Proteins, Protein Subunits, Tumor Suppressor Proteins, Protein Phosphatase 2
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