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Int J Oncol. 2014 Oct;45(4):1629-37. doi: 10.3892/ijo.2014.2535. Epub 2014 Jul 4.

Morin, a flavonoid from Moraceae, suppresses growth and invasion of the highly metastatic breast cancer cell line MDA-MB‑231 partly through suppression of the Akt pathway.

Author information

1
Department of Pharmacology, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-702, Republic of Korea.
2
Department of Internal Medicine, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-702, Republic of Korea.
3
Institute of Life Science and School of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Republic of Korea.
4
Department of Biochemistry, Dongeui University College of Oriental Medicine and Department of Biomaterial Control (BK21 program), Dongeui University Graduate School, Busan 614-052, Republic of Korea.
5
Division of Applied Life Science (BK 21 Program), Research Institute of Life Science, Gyeongsang National University, Jinju 660-701, Republic of Korea.
6
Department of Neurosurgery, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-702, Republic of Korea.
7
Department of Surgery, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-702, Republic of Korea.
8
Department of Chemistry, Research Institute of Life Science, Gyeongsang National University, Jinju 660-701, Republic of Korea.

Abstract

Morin, a flavonoid found in figs and other Moraceae, displays a variety of biological actions, such as anti-oxidant, anti-inflammatory and anti-carcinogenic. However, the anticancer effects of morin and in particular its anti-metastatic effects are not well known. Therefore, in the present study, we investigated the anticancer effects of morin on highly metastatic human breast cancer cells. Our results showed that morin significantly inhibited the colony forming ability of highly metastatic MDA-MB‑231 breast cancer cells from low doses (50 µM) without cytotoxicity. In addition, morin changed MDA-MB‑231 cell morphology from mesenchymal shape to epithelial shape and inhibited the invasion of MDA-MB‑231 cells in a dose-dependent manner. Morin decreased matrix metalloproteinase-9 (MMP-9) secretion and expression of the mesenchymal marker N-cadherin of MDA-MB‑231 cells, suggesting that morin might suppress the EMT process. Furthermore, morin significantly decreased the phosphorylation of Akt, and inhibition of the Akt pathway significantly reduced MDA-MB‑231 invasion. In an in vivo xenograft mouse model, morin suppressed MDA-MB‑231 cancer cell progression. Taken together, our findings suggest that morin exhibits an inhibitory effect on the cancer progression and EMT process of highly metastatic breast cancer cells at least in part through inhibiting Akt activation. This study provides evidence that morin may have anticancer effects against metastatic breast cancer.

PMID:
24993541
DOI:
10.3892/ijo.2014.2535
[Indexed for MEDLINE]
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