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Inhibition of Histone Deacetylases Reverses Epithelial-Mesenchymal Transition in Triple-Negative Breast Cancer Cells through a Slug Mediated Mechanism

  • Molecular Cell Biology
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Abstract

High metastatic ability and poor clinical outcome are the most known clinical features of the triple- negative breast tumors. Given that the tumor cells undergoing epithelial-mesenchymal transition (EMT) often gain malignant and invasive features, we have investigated the possibility of EMT reversal in triple-negative breast cancer cells by targeting the epigenetic-modifying enzymatic complexes named histone deacetylases (HDACs) and examined the possible mechanism underlying the HDACs-based inversion in model MDA-MB-231 cells. Cells were treated with a maximal tolerable 200 nM concentrations of classical HDACs inhibitor Trichostatin A (TSA) for 48 h and afterwards the invasiveness and immigration of the cells were evaluated in TransWell Invasion Scratch Wound Healing assays. Then, in treated and control cells, quantitative real time-PCRreacions were performed for assessing the gene expression of EMT biomarkers E-cadherin, Vimentin and transcriptional factor Slug. After TSA treatment, the invasion and migration properties MDAMB- 231 cells significantly decreased, gene expression of E-cadherin was significantly up-regulated, while the levels of Slug and Vimentin encoding mRNAs were suppressed. We conclude that inhibition of HDACs in triple- negative breast cancer cells may lead to inversion of EMT and the decrease of invasiveness by down-regulating the gene expression of Slug. Since EMT is known as a pre-metastatic process, triple-negative breast tumors, the EMT reversal effects of HDACs inhibition may reduce tumor cell metastasis.

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Authors and Affiliations

  1. Department of Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran

    A. Rahimian, R. Mehrandish & A. A. Mellati

  2. Department of Medical Biotechnology and Nanotechnology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran

    G. Barati

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  1. A. Rahimian
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  2. G. Barati
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  3. R. Mehrandish
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  4. A. A. Mellati
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Correspondence to A. A. Mellati.

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Rahimian, A., Barati, G., Mehrandish, R. et al. Inhibition of Histone Deacetylases Reverses Epithelial-Mesenchymal Transition in Triple-Negative Breast Cancer Cells through a Slug Mediated Mechanism. Mol Biol 52, 406–413 (2018). https://doi.org/10.1134/S0026893318030111

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  • DOI: https://doi.org/10.1134/S0026893318030111

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