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Updated: Apr 20, 2026
Author Spotlight: Exploring the Role of Ion Channels in Cancer: Characterization and Potential Treatment Approaches
Published on: June 16, 2023
Ion channels and transporters in metastasis
Christian Stock1, Albrecht Schwab2
1Department of Gastroenterology, Hannover Medical School, Hannover, Germany.
Abstract:
An elaborate interplay between ion channels and transporters, components of the cytoskeleton, adhesion molecules, and signaling cascades provides the basis for each major step of the metastatic cascade. Ion channels and transporters contribute to cell motility by letting through or transporting ions essential for local Ca2+, pH and--in cooperation with water permeable aquaporins--volume homeostasis. Moreover, in addition to the actual ion transport they, or their auxiliary subunits, can display non-conducting activities. They can exert kinase activity in order to phosphorylate cytoskeletal constituents or their associates. They can become part of signaling processes by permeating Ca2+, by generating local pH-nanodomains or by being final downstream effectors. A number of channels and transporters are found at focal adhesions, interacting directly or indirectly with proteins of the extracellular matrix, with integrins or with components of the cytoskeleton. We also include the role of aquaporins in cell motility. They drive the outgrowth of lamellipodia/invadopodia or control the number of β1 integrins in the plasma membrane. The multitude of interacting ion channels and transporters (called transportome) including the associated signaling events holds great potential as therapeutic target(s) for anticancer agents that are aimed at preventing metastasis. This article is part of a Special Issue entitled: Membrane channels and transporters in cancers.
Insights
Ion channels and transporters are key regulators of cancer cell movement and metastasis. Targeting these molecules, collectively termed the transportome, offers promising therapeutic strategies for cancer treatment.
Area of Science:
- Molecular Biology
- Cell Biology
- Oncology
Background:
- Metastasis involves complex cellular processes regulated by various molecular components.
- Ion channels and transporters play crucial roles in cell motility, volume, and signaling.
- Aquaporins, a type of channel, also influence cell movement and adhesion.
Purpose of the Study:
- To elucidate the multifaceted roles of ion channels and transporters in the metastatic cascade.
- To highlight the non-conducting functions of these proteins in cellular processes.
- To identify the transportome as a potential therapeutic target for anti-cancer drugs.
Main Methods:
- Review of existing literature on ion channels, transporters, and metastasis.
- Analysis of the interplay between transport proteins, cytoskeleton, and signaling pathways.
- Examination of the role of aquaporins in cell motility and adhesion.
Main Results:
- Ion channels and transporters regulate cell motility, ion homeostasis (Ca2+, pH), and volume.
- These proteins exhibit non-conducting functions, including kinase activity and signaling roles.
- Channels and transporters are localized at focal adhesions, interacting with extracellular matrix and cytoskeletal proteins.
- Aquaporins influence lamellipodia/invadopodia outgrowth and beta1 integrin levels.
Conclusions:
- The transportome, encompassing ion channels, transporters, and associated signaling, is integral to metastasis.
- Targeting the transportome presents a significant therapeutic opportunity for developing novel anti-cancer agents to prevent metastasis.
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