Protein phosphatase 2A regulatory subunits and cancer
Abstract
The serine/threonine protein phosphatase (PP2A) is a trimeric holoenzyme that plays an integral role in the regulation of a number of major signaling pathways whose deregulation can contribute to cancer. The specificity and activity of PP2A are highly regulated through the interaction of a family of regulatory B subunits with the substrates. Accumulating evidence indicates that PP2A acts as a tumor suppressor. In this review we summarize the known effects of specific PP2A holoenzymes and their roles in cancer relevant pathways. In particular we highlight PP2A function in the regulation of MAPK and Wnt signaling.
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Only a subset of the numerous B subunits are relevant for the tumor suppressor activity of PP2A.
“only a subset of the numerous B subunits are relevant for the tumor suppressor activity of PP2A [25,26]”
From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [26]
Binding of CIP2A to PP2A via specific B subunits may explain why CIP2A only regulates a fairly restricted number of phosphoproteins among thousands of potential target proteins regulated by different PP2A complexes.
“Binding of CIP2A to PP2A via specific B subunits imposes an interesting possible explanation for observations that CIP2A only regulates a fairly restricted number of phosphoproteins [6,13] among thousands of potential target proteins regulated by different PP2A complexes [24,26].”
From Oncoprotein CIP2A is stabilized via interaction with tumor suppressor PP2A/B56 (2017) · cites this paper as [26]
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- Authors
- Eichhorn, P. J. A., Creyghton, M. P., & Bernards, R.
- Affiliations
- The Netherlands Cancer Institute (NL)
- Corresponding author
- Bernards, René
- Venue
- Biochimica et Biophysica Acta (BBA) - Reviews on Cancer
- Publisher
- Elsevier BV
- Published
- 2009-01
- Volume
- 1795
- Issue
- 1
- Pages
- 1-15
- ISSN
- 0304-419X (ISSN-L)
- OpenAlex
- W2070544692
- Cited by
- 513
- References
- 24
- Citations by year
- 2026: 1 · 2025: 10 · 2024: 15 · 2023: 22 · 2022: 23 · 2021: 29 · 2020: 20 · 2019: 34 · 2018: 27 · 2017: 33 · 2016: 30 · 2015: 35 · 2014: 42 · 2013: 31 · 2012: 44
- FWCI
- 3.01
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biochimica et Biophysica Acta (BBA) - Reviews on Cancer (publishedVersion)
- PubMed (publishedVersion)
- 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 › Signaling Pathways in Disease
- Keywords
- protein phosphatase 2A, tumor suppressor, MAPK signaling, Wnt signaling, serine/threonine phosphatase, signaling pathway deregulation, cancer
- MeSH terms
- Animals, Cell Transformation, Neoplastic, Humans, Models, Biological, Neoplasms, Signal Transduction, MAP Kinase Signaling System, Protein Subunits, Wnt Proteins, Protein Phosphatase 2
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