Acidic microenvironment induction of interleukin-8 expression and matrix metalloproteinase-2/-9 activation via acid-sensing ion channel 1 promotes breast cancer cell progression

  • Authors:
    • Masako Nakanishi
    • Ayaka Korechika
    • Haruka Yamakawa
    • Naoko Kawabe
    • Kazuma Nakai
    • Yasuteru Muragaki
  • View Affiliations

  • Published online on: December 24, 2020     https://doi.org/10.3892/or.2020.7907
  • Pages: 1284-1294
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Abstract

The cancer microenvironment exhibits local acidosis compared with the surrounding normal tissue. Many reports have shown that acidosis accelerates the invasiveness and metastasis of cancer, yet the underlying molecular mechanisms remain unclear. In the present study, we focused on acid-induced functional changes through acid receptors in breast cancer cells. Acidic treatment induced interleukin (IL)-8 expression in MDA-MB-231 cells and promoted cell migration and invasion. The acidic microenvironment elevated matrix metalloproteinase (MMP)-2 and MMP-9 activity, and addition of IL-8 had similar effects. However, inhibition of IL-8 suppressed the acid-induced migration and invasion of MDA-MB-231 cells. MDA-MB-231 cells express various acid receptors including ion channels and G protein-coupled receptors. Interestingly, acidic stimulation increased the expression of acid-sensing ion channel 1 (ASIC1), and acid-induced IL-8 was significantly decreased by ASIC1 knockdown. Moreover, phosphorylation of nuclear factor (NF)-κB was induced by acidic treatment, and inhibition of NF-κB activation reduced acid-induced IL-8 expression. These results suggest that IL-8 induction by an acidic microenvironment promotes breast cancer development and that ASIC1 might be a novel therapeutic target for breast cancer metastasis.
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March-2021
Volume 45 Issue 3

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Nakanishi M, Korechika A, Yamakawa H, Kawabe N, Nakai K and Muragaki Y: Acidic microenvironment induction of interleukin-8 expression and matrix metalloproteinase-2/-9 activation via acid-sensing ion channel 1 promotes breast cancer cell progression. Oncol Rep 45: 1284-1294, 2021
APA
Nakanishi, M., Korechika, A., Yamakawa, H., Kawabe, N., Nakai, K., & Muragaki, Y. (2021). Acidic microenvironment induction of interleukin-8 expression and matrix metalloproteinase-2/-9 activation via acid-sensing ion channel 1 promotes breast cancer cell progression. Oncology Reports, 45, 1284-1294. https://doi.org/10.3892/or.2020.7907
MLA
Nakanishi, M., Korechika, A., Yamakawa, H., Kawabe, N., Nakai, K., Muragaki, Y."Acidic microenvironment induction of interleukin-8 expression and matrix metalloproteinase-2/-9 activation via acid-sensing ion channel 1 promotes breast cancer cell progression". Oncology Reports 45.3 (2021): 1284-1294.
Chicago
Nakanishi, M., Korechika, A., Yamakawa, H., Kawabe, N., Nakai, K., Muragaki, Y."Acidic microenvironment induction of interleukin-8 expression and matrix metalloproteinase-2/-9 activation via acid-sensing ion channel 1 promotes breast cancer cell progression". Oncology Reports 45, no. 3 (2021): 1284-1294. https://doi.org/10.3892/or.2020.7907