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  • Title: Sulphonated Formononetin Induces Angiogenesis through Vascular Endothelial Growth Factor/cAMP Response Element-Binding Protein/Early Growth Response 3/Vascular Cell Adhesion Molecule 1 and Wnt/β-Catenin Signaling Pathway.
    Author: Dong Z, Shi Y, Zhao H, Li N, Ye L, Zhang S, Zhu H.
    Journal: Pharmacology; 2018; 101(1-2):76-85. PubMed ID: 29131133.
    Abstract:
    BACKGROUND: Sodium formononetin-3'-sulphonate (Sul-F) is a derivative of the isoflavone formononetin. In this study, we investigated whether Sul-F can regulate angiogenesis and the potential mechanism in vitro. METHODS: We examined the effects of Sul-F on cell proliferation, cell invasion, and tube formation in the human umbilical vein endothelial cell line (HUVEC). To better understand the mechanism involved, we investigated effects of the following compounds: cAMP response element-binding protein (CREB) inhibitor 2-naphthol-AS-E-phosphate (KG-501), early growth response 3 (Egr-3) siRNA, vascular endothelial growth factor (VEGF) antagonist soluble VEGF receptor 1 (sFlt-1), VEGF receptor 2 blocker SU-1498, Wnt5a antagonist WIF-1 recombinant protein (WIF-1), and inhibitor of Wnt/β-catenin recombinant Dickkopf-1 protein (DKK-1). HUVEC proliferation was tested by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT). A scratch adhesion test was used to assess cell invasion ability. Matrigel tube formation assay was performed to test capillary tube formation ability. Activation of the VEGF/CREB/Egr-3/Vascular cell adhesion molecule 1 (VCAM-1) pathway in HUVEC was tested by Western blot analysis. RESULTS: Our results suggest that Sul-F induced angiogenesis in vitro by enhancing cell proliferation, invasion, and tube formation. The increase in proliferation and tube formation by Sul-F was counteracted by DKK-1, WIF-1, SU1498, KG-501, sFlt-1, and Egr-3 siRNA. CONCLUSIONS: These results may suggest that Sul-F induces angiogenesis in vitro via a programed Wnt/β-catenin pathway and VEGF/CREB/Egr-3/VCAM-1 signaling axis.
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