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Updated: Jun 5, 2026

Screening Ion Channels in Cancer Cells
Published on: June 16, 2023
Eag and HERG potassium channels as novel therapeutic targets in cancer
Viren Asher1, Heidi Sowter, Robert Shaw
1Department of Obstetrics and Gynaecology, School of Graduate Medicine and Health, Royal Derby Hospital, Uttoxeter road, Derby DE22 3DT, UK. viren.asher@nottingham.ac.uk
Abstract:
Voltage gated potassium channels have been extensively studied in relation to cancer. In this review, we will focus on the role of two potassium channels, Ether à-go-go (Eag), Human ether à-go-go related gene (HERG), in cancer and their potential therapeutic utility in the treatment of cancer. Eag and HERG are expressed in cancers of various organs and have been implicated in cell cycle progression and proliferation of cancer cells. Inhibition of these channels has been shown to reduce proliferation both in vitro and vivo studies identifying potassium channel modulators as putative inhibitors of tumour progression. Eag channels in view of their restricted expression in normal tissue may emerge as novel tumour biomarkers.
Insights
This review highlights the role of Ether à-go-go (Eag) and Human ether à-go-go related gene (HERG) potassium channels in cancer. Inhibiting these channels shows potential for reducing tumor progression and offers new biomarker possibilities.
Area of Science:
- Oncology
- Molecular Biology
- Channelopathies
Background:
- Voltage-gated potassium channels are increasingly recognized for their involvement in cancer.
- Specific channels, Ether à-go-go (Eag) and Human ether à-go-go related gene (HERG), are expressed across various cancer types.
Purpose of the Study:
- To review the role of Eag and HERG potassium channels in cancer development.
- To explore the therapeutic potential of targeting these channels for cancer treatment.
- To assess the utility of Eag channels as potential tumor biomarkers.
Main Methods:
- Literature review focusing on studies investigating Eag and HERG channels in cancer.
- Analysis of in vitro and in vivo data on the effects of potassium channel inhibition on cancer cells.
- Evaluation of expression patterns of Eag channels in normal versus cancerous tissues.
Main Results:
- Eag and HERG channels are implicated in the cell cycle progression and proliferation of cancer cells.
- Inhibition of Eag and HERG channels has demonstrated a reduction in cancer cell proliferation.
- Potassium channel modulators are identified as potential inhibitors of tumor progression.
- Eag channels exhibit restricted expression in normal tissues, suggesting potential as tumor biomarkers.
Conclusions:
- Eag and HERG potassium channels play significant roles in cancer biology.
- Targeting Eag and HERG channels represents a promising therapeutic strategy for cancer treatment.
- Eag channels may serve as valuable novel biomarkers for early cancer detection and monitoring.
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