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Open AccessArticle

Quercetin Inhibits Cell Survival and Metastatic Ability via the EMT-Mediated Pathway in Oral Squamous Cell Carcinoma

1
Department of Oral Pathology, and BK21 PLUS Project, School of Dentistry, Pusan National University, Yangsan 50612, Korea
2
Periodontal Disease Signaling Network Research Center (MRC), School of Dentistry, Pusan National University, Yangsan 50612, Korea
*
Authors to whom correspondence should be addressed.
Academic Editor: Kyoko Nakagawa-Goto
Molecules 2020, 25(3), 757; https://doi.org/10.3390/molecules25030757
Received: 31 December 2019 / Revised: 6 February 2020 / Accepted: 9 February 2020 / Published: 10 February 2020
(This article belongs to the Special Issue Antitumor and Anti-HIV Agents from Natural Products)
This study aimed to investigate whether quercetin exerts anticancer effects on oral squamous cell carcinoma (OSCC) cell lines and to elucidate its mechanism of action. These anticancer effects in OSCC cells were assessed using an MTT assay, flow cytometry (to assess the cell cycle), wound-healing assay, invasion assay, Western blot analysis, gelatin zymography, and immunofluorescence. To investigate whether quercetin also inhibits transforming growth factor β1 (TGF-β1)-induced epithelial–mesenchymal transition (EMT) in human keratinocyte cells, HaCaT cells were treated with TGF-β1. Overall, our results strongly suggest that quercetin suppressed the viability of OSCC cells by inducing cell cycle arrest at the G2/M phase. However, quercetin did not affect cell viability of human keratinocytes such as HaCaT (immortal keratinocyte) and nHOK (primary normal human oral keratinocyte) cells. Additionally, quercetin suppresses cell migration through EMT and matrix metalloproteinase (MMP) in OSCC cells and decreases TGF-β1-induced EMT in HaCaT cells. In conclusion, this study is the first, to our knowledge, to demonstrate that quercetin can inhibit the survival and metastatic ability of OSCC cells via the EMT-mediated pathway, specifically Slug. Quercetin may thus provide a novel pharmacological approach for the treatment of OSCCs. View Full-Text
Keywords: quercetin; oral squamous cell carcinoma cells; metastasis; cell cycle arrest; epithelial-to-mesenchymal transition; matrix metalloproteinase; transforming growth factor-β1 quercetin; oral squamous cell carcinoma cells; metastasis; cell cycle arrest; epithelial-to-mesenchymal transition; matrix metalloproteinase; transforming growth factor-β1
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MDPI and ACS Style

Kim, S.R.; Lee, E.Y.; Kim, D.J.; Kim, H.J.; Park, H.R. Quercetin Inhibits Cell Survival and Metastatic Ability via the EMT-Mediated Pathway in Oral Squamous Cell Carcinoma. Molecules 2020, 25, 757. https://doi.org/10.3390/molecules25030757

AMA Style

Kim SR, Lee EY, Kim DJ, Kim HJ, Park HR. Quercetin Inhibits Cell Survival and Metastatic Ability via the EMT-Mediated Pathway in Oral Squamous Cell Carcinoma. Molecules. 2020; 25(3):757. https://doi.org/10.3390/molecules25030757

Chicago/Turabian Style

Kim, So R.; Lee, Eun Y.; Kim, Da J.; Kim, Hye J.; Park, Hae R. 2020. "Quercetin Inhibits Cell Survival and Metastatic Ability via the EMT-Mediated Pathway in Oral Squamous Cell Carcinoma" Molecules 25, no. 3: 757. https://doi.org/10.3390/molecules25030757

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