Article Publish Status: FREE
Abstract Title:

Formononetin induces apoptosis of human osteosarcoma cell line U2OS by regulating the expression of Bcl-2, Bax and MiR-375 in vitro and in vivo.

Abstract Source:

Cell Physiol Biochem. 2015 ;37(3):933-9. Epub 2015 Sep 18. PMID: 26381132

Abstract Author(s):

Wei Hu, ZengMing Xiao

Article Affiliation:

Wei Hu


BACKGROUND/AIMS: Phytoestrogens are known to prevent tumor progression by inhibiting proliferation and inducing apoptosis in cancer cells. Formononetin is one of the main components of red clover plants, and is considered as a typical phytoestrogen. This study investigates formononetin induction of apoptosis of human osteosarcoma cell line U2OS by regulating Bcl-2 and Bax expression in vitro and in vivo.

METHODS: U2OS cells were treated with different concentrations of formononetin and the proliferation of the cells was measured using an MTT assay. Cell apoptosis was examined by flow cytometry. The levels of miR-375, Bax and Bcl-2 protein expression in treated cells were determined by Western blot and RT-PCR. The antitumor activity of formononetin was also evaluated in vivo in nude mice bearing orthotopic tumor implants.

RESULTS: High concentrations of formononetin significantly suppress the proliferation of U2OS cells and induce cell apoptosis. Moreover, compared to control group the expression of Bcl-2 and miR-375 decreases with formononetin in the U2OS cells, while Bax increases.

CONCLUSION: Formononetin has inhibitory effects on the proliferation of U2SO cells, both in vitro and in vivo. This antitumor effect is directly correlated with formononetin concentration.

Study Type : Animal Study, In Vitro Study

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