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Updated: May 22, 2026

Screening Ion Channels in Cancer Cells
Published on: June 16, 2023
Potassium channels: novel emerging biomarkers and targets for therapy in cancer
Massimo D'Amico1, Luca Gasparoli, Annarosa Arcangeli
1Department of Experimental Pathology and Oncology, University of Firenze, Viale G.B. Morgagni, 50, 50134 Firenze, Italy.
Abstract:
K+ Channels form the largest family among ion channels. Besides regulating many physiological functions, K+ channels, being aberrantly expressed in different types of tumors, affect several hallmarks of cancer. In cancer cells, K+ channel activity regulates cell proliferation, resistance to apoptotic cell death, tumor angiogenesis, invasiveness and metastatic spread. Moreover, being expressed in cells of the tumor microenvironment, K+ channels can also modulate the immune/inflammatory response which contributes to drive cancer establishment and progression. After almost 30 years of studies, some K+ channels are emerging as novel cancer biomarkers, to be employed to stratify patients for either prognostic or predictive purposes. Moreover, it is not remote the time in which it will be possible to target specific K+ channels in cancer for therapeutic purposes. One hindrance for applying a K+ channel-based therapy to cancer is the fact that K+ channel blockers can cause side effects, which often overlap with, but can mask, benefits. We here show some strategies to overcome harmful side effects caused by blocking K+ channels. Once taken into account these strategies, K+ channels may represent suitable and easily accessible cancer biomarkers and targets for therapy. The relevant patents related to K+ channels and cancer are discussed.
Insights
Potassium (K+) channels are key regulators of cancer progression and immune responses. Strategies to overcome side effects of K+ channel blockers offer new therapeutic avenues and biomarker potential for cancer treatment.
Area of Science:
- Molecular Biology
- Oncology
- Pharmacology
Background:
- Potassium (K+) channels, the largest ion channel family, are crucial for physiological functions.
- Aberrant K+ channel expression is linked to cancer hallmarks, including proliferation, apoptosis resistance, angiogenesis, and metastasis.
- K+ channels in the tumor microenvironment influence immune responses, promoting cancer progression.
Purpose of the Study:
- To explore the role of K+ channels as cancer biomarkers for patient stratification.
- To investigate the therapeutic potential of targeting K+ channels in cancer treatment.
- To present strategies for overcoming side effects associated with K+ channel blockers.
Main Methods:
- Review of existing literature on K+ channels in cancer.
- Analysis of K+ channel function in cancer cell proliferation, apoptosis, angiogenesis, invasion, and metastasis.
- Discussion of strategies to mitigate side effects of K+ channel-blocking agents.
Main Results:
- K+ channels significantly impact multiple cancer hallmarks and the tumor immune microenvironment.
- Certain K+ channels show promise as novel cancer biomarkers for prognostic and predictive purposes.
- Strategies exist to manage and overcome adverse effects of K+ channel-targeted therapies.
Conclusions:
- K+ channels represent viable and accessible targets for cancer therapy and biomarkers.
- Addressing side effects is critical for the successful clinical application of K+ channel modulators.
- Further research into K+ channels and associated patents may accelerate clinical translation.
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