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Updated: Mar 20, 2026

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors
Published on: April 29, 2022
Phosphatases: Their Roles in Cancer and Their Chemical Modulators
Miriam Fontanillo1, Maja Köhn2
1Genome Biology Unit, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117, Heidelberg, Germany.
Abstract:
Phosphatases are involved in basically all cellular processes by dephosphorylating cellular components such as proteins, phospholipids and second messengers. They counteract kinases of which many are established oncogenes, and therefore kinases are one of the most important drug targets for targeted cancer therapy. Due to this relationship between kinases and phosphatases, phosphatases are traditionally assumed to be tumour suppressors. However, research findings over the last years prove that this simplification is incorrect, as bona-fide and putative phosphatase oncogenes have been identified. We describe here the role of phosphatases in cancer, tumour suppressors and oncogenes, and their chemical modulators, and discuss new approaches and opportunities for phosphatases as drug targets.
Insights
Phosphatases, enzymes that remove phosphate groups, are crucial in cell processes. Contrary to past beliefs, they can act as both tumor suppressors and oncogenes in cancer, offering new therapeutic targets.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Phosphatases regulate cellular processes by dephosphorylating proteins, lipids, and signaling molecules.
- Kinases, which phosphorylate cellular components, are key drug targets in cancer therapy.
- Phosphatases counteract kinase activity, leading to their traditional classification as tumor suppressors.
Purpose of the Study:
- To review the dual role of phosphatases in cancer.
- To explore phosphatases as both tumor suppressors and oncogenes.
- To discuss chemical modulators and therapeutic opportunities targeting phosphatases.
Main Methods:
- Literature review and synthesis of current research findings.
- Analysis of the roles of phosphatases in oncogenesis and tumor suppression.
- Identification and discussion of chemical modulators and drug targets.
Main Results:
- Phosphatases are not exclusively tumor suppressors; some function as oncogenes.
- The role of phosphatases in cancer is complex and context-dependent.
- Several phosphatases have been identified as potential oncogenes.
Conclusions:
- The traditional view of phosphatases as solely tumor suppressors is outdated.
- Phosphatases represent a promising class of targets for novel cancer therapies.
- Targeting phosphatases requires a nuanced understanding of their oncogenic or tumor-suppressive functions.
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