Quercetin inhibits angiogenesis through thrombospondin-1 upregulation to antagonize human prostate cancer PC-3 cell growth in vitro and in vivo

Yang,Feiya; Jiang,Xian; Song,Liming; Wang,Huiping; Mei,Zhu; Xu,Zhiqing; Xing,Nianzeng

doi:10.3892/or.2015.4481

Quercetin inhibits angiogenesis through thrombospondin-1 upregulation to antagonize human prostate cancer PC-3 cell growth in vitro and in vivo

Authors:
- Feiya Yang
- Xian Jiang
- Liming Song
- Huiping Wang
- Zhu Mei
- Zhiqing Xu
- Nianzeng Xing
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Affiliations: Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China, Department of Urology, The Third Hospital of Nanchang, Jiangxi, P.R. China, Department of Reproductive Immunology and Pharmacology, National Research Institute for Family Planning, Beijing, P.R. China, Institute of Neuroscience, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, P.R. China
Published online on: December 9, 2015 https://doi.org/10.3892/or.2015.4481
Pages: 1602-1610

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Abstract

The rapid growth, morbidity and mortality of prostate cancer, and the lack of effective treatment have attracted great interests of researchers to find novel cancer therapies aiming to inhibit angiogenesis and tumor growth. Quercetin is a flavonoid compound that widely exists in the nature. Our previous study preliminarily demonstrated that quercetin effectively inhibited human prostate cancer cell xenograft tumor growth by inhibiting angiogenesis. Thrombospondin-1 (TSP-1) is the first reported endogenous anti-angiogenic factor that can inhibit angiogenesis and tumorigenesis. However, the relationship between quercetin inhibiting angiogenesis and TSP-1 upregulation in prostate cancer has not been determined. Thus, we explored the important role of TSP-1 upregulation in reducing angiogenesis and anti-prostate cancer effect of quercetin both in vitro and in vivo for the first time. After the selected doses were used for a certain time, quercetin i) significantly inhibited PC-3 and human umbilical vein endothelial cells (HUVECs) proliferation, migration and invasion in a dose-dependent manner; ⅱ) effectively inhibited prostate cancer PC-3 cell xenograft tumor growth by 37.5% with 75 mg/kg as compared to vehicle control group, more effective than 25 (22.85%) and 50 mg/kg (29.6%); ⅲ) was well tolerated by BALB/c mice and no obvious toxic reactions were observed; ⅳ) greatly reduced angiogenesis and led to higher TSP-1 protein and mRNA expression both in vitro and in vivo in a dose-dependent manner. Therefore, quercetin could increase TSP-1 expression to inhibit angiogenesis resulting in antagonizing prostate cancer PC-3 cell and xenograft tumor growth. The present study can lay a good basis for the subsequent concrete mechanism study and raise the possibility of applying quercetin to clinical for human prostate cancer in the near future.

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