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Updated: Oct 13, 2025

A Mass Spectrometry-Based Approach to Identify Phosphoprotein Phosphatases and their Interactors
Published on: April 29, 2022
Targeting Phosphatases and Kinases: How to Checkmate Cancer
Alice Turdo1, Caterina D'Accardo1, Antonino Glaviano2
1Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy.
Abstract:
Metastatic disease represents the major cause of death in oncologic patients worldwide. Accumulating evidence have highlighted the relevance of a small population of cancer cells, named cancer stem cells (CSCs), in the resistance to therapies, as well as cancer recurrence and metastasis. Standard anti-cancer treatments are not always conclusively curative, posing an urgent need to discover new targets for an effective therapy. Kinases and phosphatases are implicated in many cellular processes, such as proliferation, differentiation and oncogenic transformation. These proteins are crucial regulators of intracellular signaling pathways mediating multiple cellular activities. Therefore, alterations in kinases and phosphatases functionality is a hallmark of cancer. Notwithstanding the role of kinases and phosphatases in cancer has been widely investigated, their aberrant activation in the compartment of CSCs is nowadays being explored as new potential Achille's heel to strike. Here, we provide a comprehensive overview of the major protein kinases and phosphatases pathways by which CSCs can evade normal physiological constraints on survival, growth, and invasion. Moreover, we discuss the potential of inhibitors of these proteins in counteracting CSCs expansion during cancer development and progression.
Insights
Cancer stem cells (CSCs) drive metastasis and treatment resistance. Targeting their unique kinase and phosphatase pathways offers a promising strategy to combat cancer recurrence and progression.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Metastatic disease is the primary cause of cancer mortality globally.
- Cancer stem cells (CSCs) are implicated in therapy resistance, recurrence, and metastasis.
- Standard cancer treatments often lack curative efficacy, necessitating novel therapeutic targets.
Purpose of the Study:
- To provide a comprehensive overview of protein kinases and phosphatases in CSCs.
- To explore the role of these enzymes in CSC survival, growth, and invasion.
- To discuss the therapeutic potential of targeting these pathways in CSCs.
Main Methods:
- Literature review and synthesis of existing research on kinases, phosphatases, and CSCs.
- Analysis of signaling pathways dysregulated in CSCs.
- Discussion of potential therapeutic strategies targeting CSC-specific kinases and phosphatases.
Main Results:
- CSCs utilize specific kinase and phosphatase pathways to evade normal cellular constraints.
- Aberrant activation of these pathways is a key feature of CSCs.
- These pathways regulate CSC survival, proliferation, and invasive potential.
Conclusions:
- Targeting kinases and phosphatases in CSCs represents a potential Achilles' heel for cancer therapy.
- Inhibitors of these enzymes may counteract CSC expansion and improve treatment outcomes.
- Further research into CSC-specific signaling is crucial for developing effective anti-cancer strategies.
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