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IJMS, Vol. 19, Pages 1061: Kv3.1 and Kv3.4, Are Involved in Cancer Cell Migration and Invasion

IJMS, Vol. 19, Pages 1061: Kv3.1 and Kv3.4, Are Involved in Cancer Cell Migration and Invasion

International Journal of Molecular Sciences doi: 10.3390/ijms19041061

Authors: Min Song Su Park Jeong Park Jin Byun Hee Jin Seung Seo Pan Ryu So Lee

Voltage-gated potassium (Kv) channels, including Kv3.1 and Kv3.4, are known as oxygen sensors, and their function in hypoxia has been well investigated. However, the relationship between Kv channels and tumor hypoxia has yet to be investigated. This study demonstrates that Kv3.1 and Kv3.4 are tumor hypoxia-related Kv channels involved in cancer cell migration and invasion. Kv3.1 and Kv3.4 protein expression in A549 and MDA-MB-231 cells increased in a cell density-dependent manner, and the pattern was similar to the expression patterns of hypoxia-inducible factor-1α (HIF-1α) and reactive oxygen species (ROS) according to cell density, whereas Kv3.3 protein expression did not change in A549 cells with an increase in cell density. The Kv3.1 and Kv3.4 blocker blood depressing substance (BDS) did not affect cell proliferation; instead, BDS inhibited cell migration and invasion. We found that BDS inhibited intracellular pH regulation and extracellular signal-regulated kinase (ERK) activation in A549 cells cultured at a high density, potentially resulting in BDS-induced inhibition of cell migration and invasion. Our data suggest that Kv3.1 and Kv3.4 might be new therapeutic targets for cancer metastasis.

Authors:   Song, Min Seok; Park, Su Min; Park, Jeong Seok; Byun, Jin Ho; Jin, Hee Jung; Seo, Seung Hyun; Ryu, Pan Dong; Lee, So Yeong
Journal:   International Journal of Molecular Sciences
Volume:   19
edition:   4
Year:   2018
Pages:   1061
DOI:   10.3390/ijms19041061
Publication date:   02-Apr-2018
Facts, background information, dossiers
  • cells
  • cell migration
  • protein expression
  • hypoxia
  • cell density
  • cancer metastasis
  • blood
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