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Updated: Oct 26, 2025
Studying Pancreatic Cancer Stem Cell Characteristics for Developing New Treatment Strategies
Published on: June 20, 2015
Cancer stem cell phosphatases
Majid Momeny1, Tiina Arsiola1, Jukka Westermarck1,2
1Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland.
Abstract:
Cancer stem cells (CSCs) are involved in the initiation and progression of human malignancies by enabling cancer tissue self-renewal capacity and constituting the therapy-resistant population of tumor cells. However, despite the exhausting characterization of CSC genetics, epigenetics, and kinase signaling, eradication of CSCs remains an unattainable goal in most human malignancies. While phosphatases contribute equally with kinases to cellular phosphoregulation, our understanding of phosphatases in CSCs lags severely behind our knowledge about other CSC signaling mechanisms. Many cancer-relevant phosphatases have recently become druggable, indicating that further understanding of the CSC phosphatases might provide novel therapeutic opportunities. This review summarizes the current knowledge about fundamental, but yet poorly understood involvement of phosphatases in the regulation of major CSC signaling pathways. We also review the functional roles of phosphatases in CSC self-renewal, cancer progression, and therapy resistance; focusing particularly on hematological cancers and glioblastoma. We further discuss the small molecule targeting of CSC phosphatases and their therapeutic potential in cancer combination therapies.
Insights
Understanding phosphatases in cancer stem cells (CSCs) is crucial for developing new therapies. Targeting these phosphatases may offer novel strategies to combat therapy-resistant tumors and improve cancer treatment outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Cancer stem cells (CSCs) drive tumor initiation, progression, and therapy resistance.
- Kinase signaling in CSCs is well-studied, but the role of phosphatases remains poorly understood.
- Many phosphatases are now druggable targets, presenting new therapeutic avenues.
Purpose of the Study:
- To review the current knowledge on phosphatases in CSCs.
- To highlight the functional roles of phosphatases in CSC self-renewal, progression, and resistance.
- To discuss the therapeutic potential of targeting CSC phosphatases.
Main Methods:
- Literature review of fundamental and applied research on phosphatases in CSCs.
- Focus on signaling pathways, self-renewal, cancer progression, and therapy resistance.
- Emphasis on hematological cancers and glioblastoma.
Main Results:
- Phosphatases play a critical, yet underappreciated, role in regulating CSC signaling pathways.
- Dysregulation of phosphatases contributes to CSC self-renewal, cancer progression, and resistance to therapy.
- Targeting phosphatases in CSCs shows promise for combination therapies.
Conclusions:
- Phosphatases are key regulators of CSC functions and therapeutic resistance.
- Further investigation into CSC phosphatases is warranted for novel cancer treatment strategies.
- Targeting CSC phosphatases offers potential for innovative combination therapies in oncology.
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