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Activation of the ion channel induces epithelial to mesenchymal transition in breast cancer cells

Citation

Azimi, I and Robitaille, M and Armitage, K and So, CL and Milevskiy, MJG and Northwood, K and Lim, HF and Thompson, EW and Roberts-Thomson, SJ and Monteith, GR, Activation of the ion channel induces epithelial to mesenchymal transition in breast cancer cells, International Journal of Molecular Sciences, 21, (24) Article 9417. ISSN 1422-0067 (2020) [Refereed Article]


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DOI: doi:10.3390/ijms21249417

Abstract

Epithelial to mesenchymal transition (EMT) in cancer is important in therapeutic resistance and invasiveness. Calcium signaling is key to the induction of EMT in breast cancer cells. Although inhibition of specific calcium-permeable ion channels regulates the induction of a sub-set of EMT markers in breast cancer cells, it is still unclear if activation of a specific calcium channel can be a driver for the induction of EMT events. In this study, we exploited the availability of a selective pharmacological activator of the calcium-permeable ion channel TRPV4 to assess the direct role of calcium influx in EMT marker induction. Gene association studies revealed a link between TRPV4 and gene-ontologies associated with EMT and poorer relapse-free survival in lymph node-positive basal breast cancers. TRPV4 was an important component of the calcium influx phase induced in MDA-MB-468 breast cancer cells by the EMT inducer epidermal growth factor (EGF). Pharmacological activation of TRPV4 then drove the induction of a variety of EMT markers in breast cancer cells. These studies demonstrate that calcium influx through specific pathways appears to be sufficient to trigger EMT events.

Item Details

Item Type:Refereed Article
Keywords:Calcium, EMT, cancer, TRPV4, pharmacological modulation, calcium channel, breast cancer
Research Division:Biomedical and Clinical Sciences
Research Group:Pharmacology and pharmaceutical sciences
Research Field:Basic pharmacology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biomedical and clinical sciences
UTAS Author:Azimi, I (Dr Iman Azimi)
ID Code:142259
Year Published:2020
Web of Science® Times Cited:2
Deposited By:Pharmacy
Deposited On:2021-01-04
Last Modified:2021-01-06
Downloads:0

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