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Metastasis02:30

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Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
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The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
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Ion Channels01:19

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The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
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Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

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Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
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Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
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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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Related Experiment Video

Updated: Mar 15, 2026

Intracarotid Cancer Cell Injection to Produce Mouse Models of Brain Metastasis
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Intracarotid Cancer Cell Injection to Produce Mouse Models of Brain Metastasis

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Ion Channels in Brain Metastasis.

Lukas Klumpp1,2, Efe C Sezgin3, Franziska Eckert4

  • 1Department of Radiation Oncology, University of Tübingen, 72076 Tübingen, Germany. lukas.klumpp@med.uni-tuebingen.de.

International Journal of Molecular Sciences
|September 13, 2016
PubMed
Summary

Ion channels play a critical role in brain metastasis for cancers like breast cancer, lung cancer, and melanoma. Targeting these ion channels offers potential new therapies for brain metastases.

Keywords:
BKCaKv10.1connexinpannexinvoltage-gated sodium channels

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Area of Science:

  • Oncology
  • Neuroscience
  • Molecular Biology

Background:

  • Brain metastases significantly worsen cancer patient prognosis and limit treatment options.
  • Cancer cell metastasis to the brain involves a complex cascade of processes.
  • Aberrant ion channel expression in tumors influences cancer progression and drug resistance.

Purpose of the Study:

  • To review the current understanding of ion channel functions in brain metastasis.
  • To highlight ion channels as potential therapeutic targets for treating brain metastases.

Main Methods:

  • Literature review of studies on ion channels and brain metastasis.
  • Analysis of the role of specific ion channel types in metastasis processes.

Main Results:

  • Ion channels are implicated in multiple stages of brain metastasis, including cell migration and invasion.
  • Specific channels like voltage-gated sodium channels, ATP-release channels, neurotransmitter receptors, and connexins are involved.
  • These channels influence cancer cell extravasation across the blood-brain barrier and colonization.

Conclusions:

  • Ion channels are crucial regulators of brain metastasis.
  • Targeting ion channels presents a promising strategy for developing novel anti-cancer therapies against brain metastases.