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Abstract Title:

Embelin Inhibits Invasion and Migration of MDA-MB-231 Breast Cancer Cells by Suppression of CXC Chemokine Receptor 4, Matrix Metalloproteinases-9/2, and Epithelial-Mesenchymal Transition.

Abstract Source:

Phytother Res. 2016 Jun ;30(6):1021-32. Epub 2016 Mar 31. PMID: 27030214

Abstract Author(s):

Hanwool Lee, Jeong-Hyeon Ko, Seung Ho Baek, Dongwoo Nam, Seok Geun Lee, Junhee Lee, Woong Mo Yang, Jae-Young Um, Sung-Hoon Kim, Bum Sang Shim, Kwang Seok Ahn

Article Affiliation:

Hanwool Lee

Abstract:

Embelin (EB) is a benzoquinone derivative isolated from Embelia ribes Burm plant. Recent scientific evidence shows that EB induces apoptosis and inhibits migration and invasion in highly metastatic human breast cancer cells. However, the exact mechanisms of EB in tumor metastasis and invasion have not been fully elucidated. Here, we investigated the underlying mechanisms of antimetastatic activities of EB in breast cancer cells. The EB downregulated the chemokine receptor 4 (CXCR4) as well as matrix metalloproteinase (MMP)-9/2 expression and upregulated the tissue inhibitor of metalloproteinase 1 expression in MDA-MB-231 cells under noncytotoxic concentrations but not in MCF-7 cells. Additionally, EB inhibited the CXC motif chemokine ligand 12 induced invasion and migration activities of MDA-MB-231 cells. A detailed study of underlying mechanisms revealed that the regulation of the downregulation of CXCR4 was at the transcriptional level, as indicated by the downregulation of mRNA expression and suppression of nuclear factor-kappa B (NF-κB) activation. It further reduced the binding of NF-κB to the CXCR4 promoter. Besides, EB downregulated mesenchymal marker proteins (neural cadherin and vimentin) and concurrently upregulated epithelial markers (epithelial cadherin and occludin). Overall, these findings suggest that EB can abrogate breast cancer cell invasion and metastasis by suppression of CXCR4, MMP-9/2 expressions, and inhibition of epithelial-mesenchymal transition and thus may have a great potential to suppress metastasis of breast cancer. Copyright © 2016 John Wiley&Sons, Ltd.

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Sayer Ji
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