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Related Concept Videos

Non-gated Ion Channels01:24

Non-gated Ion Channels

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Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
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Voltage-gated Ion Channels01:26

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Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
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Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
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Antiepileptic Drugs: Potassium Channel Activators01:20

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Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
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Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Cancer-Critical Genes I: Proto-oncogenes01:33

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Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
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Related Experiment Video

Updated: Nov 9, 2025

Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches
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Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches

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Potassium Channels in Cancer.

Katrin Ganser1, Lukas Klumpp1, Helmut Bischof2

  • 1Department of Radiation Oncology, University of Tübingen, Tübingen, Germany.

Handbook of Experimental Pharmacology
|April 17, 2021
PubMed
Summary

Altered potassium transport is key in cancer development and progression. Targeting oncogenic potassium channels offers new strategies against cancer stemness, metastasis, and treatment resistance.

Keywords:
Cancer stem cellsChemotherapyMetabolic reprogrammingMetastasisOncochannelsOncoimmunologyRadiation therapyTumour biologyTumour hypoxia

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Physiology

Background:

  • Neoplastic transformation involves significant changes in cellular potassium transport.
  • Alterations in potassium channels are implicated in cancer initiation, progression, and therapy resistance.

Purpose of the Study:

  • To review the role of oncogenic potassium channels in various cancers.
  • To explore their involvement in cancer stemness, tumor microenvironment, hypoxia adaptation, metabolic reprogramming, and metastasis.
  • To discuss their potential as therapeutic targets for overcoming treatment resistance.

Main Methods:

  • Literature review and synthesis of existing research on potassium channels in cancer.
  • Analysis of upstream and downstream signaling pathways.
  • Discussion of therapeutic strategies involving potassium channel modulation.

Main Results:

  • Oncogenic potassium channels are frequently upregulated in tumors.
  • These channels influence cancer stemness, immunosuppression, hypoxia adaptation, and metabolic reprogramming.
  • They play a role in tumor spreading, metastasis, and resistance to radiation and chemotherapy.

Conclusions:

  • Potassium channels are critical regulators of multiple hallmarks of cancer.
  • Targeting these channels, potentially through drug repurposing, presents a promising avenue for novel cancer therapies.