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Gigantol Inhibits Wnt/β-catenin Signaling and Exhibits Anticancer Activity in Breast Cancer Cells

Gigantol Inhibits Wnt/β-catenin Signaling and Exhibits Anticancer Activity in Breast Cancer Cells

Shubin Yu, Zhongyuan Wang, Zijie Su, Jiaxing Song, Liang Zhou, Qi Sun, Shanshan Liu, Shiyue Li, Ying Li, Meina Wang, Guo-Qiang Zhang, Xue Zhang, Zhong-Jian Liu, Desheng Lu

BMC Complement Altern Med. 2018 Feb 14;18(1):59.

PMID: 29444668

Abstract:

Background:
Gigantol is a bibenzyl compound derived from several medicinal orchids. This biologically active compound has been shown to have promising therapeutic potential against cancer cells, but its mechanism of action remains unclear.
Methods:
The inhibitory effect of gigantol on Wnt/β-catenin signaling was evaluated with the SuperTOPFlash reporter system. The levels of phosphorylated low-density lipoprotein receptor related protein 6 (LRP6), total LRP6 and cytosolic β-catenin were determined by Western blot analysis. The expression of Wnt target genes was analyzed using real-time PCR. Cell viability was measured with a MTT assay. The effect of gigantol on cell migration was examined using scratch wound-healing and transwell migration assays.
Results:
Gigantol decreased the level of phosphorylated LRP6 and cytosolic β-catenin in HEK293 cells. In breast cancer MDA-MB-231 and MDA-MB-468 cells, treatment with gigantol reduced the level of phosphorylated LRP6, total LRP6 and cytosolic β-catenin in a dose-dependent manner, resulting in a decrease in the expression of Wnt target genes Axin2 and Survivin. We further demonstrated that gigantol suppressed the viability and migratory capacity of breast cancer cells.
Conclusion:
Gigantol is a novel inhibitor of the Wnt/β-catenin pathway. It inhibits Wnt/β-catenin signaling through downregulation of phosphorylated LRP6 and cytosolic β-catenin in breast cancer cells.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP67884304	Gigantol		67884-30-4	Price

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