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RY10-4, a novel anti-tumor compound, exhibited its anti-angiogenesis activity by down-regulation of the HIF-1α and inhibition phosphorylation of AKT and mTOR

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Abstract

Purpose

To assess the anti-angiogenesis potential and mechanism of RY10-4, a derivative of protoapigenone, which was verified the broad-spectrum anti-tumor activities by previous study.

Methods

RY10-4 and RY10-3 were synthesized according to the procedure described. Breast cancer cells MCF-7 and MDA-MB-231 that got the best performance in the previous anti-tumor activity screening were selected for further anti-cancer mechanism research. Firstly, cells proliferation assay of RY10-4 and RY10-3 was used to demonstrate the fact that the 4-hydroxy-2,5-cyclohexadien-1-one system would be the efficient pharmacophore of RY10-4. Then, a series of assays such as human umbilical vein endothelial cells (HUVECs) proliferation assay, HUVECs migration, tube network formation and morphological observations of zebrafish were applied to confirm its anti-angiogenesis activity. Upon RY10-4 treatment, the HIF-1α and VEGF were analyzed by western blot in normoxic and hypoxic conditions, meanwhile the PI3K-AKT-mTOR pathway-related protein such as AKT, p-AKT, mTOR and p-mTOR was also analyzed.

Results

In the MCF-7, MDA-MB-231 and HUVECs proliferation assay, RY10-4 that has 4-hydroxy-2,5-cyclohexadien-1-one system showed distinct advantage compared with RY10-3. Tests had verified the anti-angiogenesis capability of RY10-4. Down-regulation of the HIF-1α and inhibition phosphorylation levels of AKT and mTOR were found to be the pathway that RY10-4 exerts its functions on anti-angiogenesis.

Conclusions

The structure of 4-hydroxy-2,5-cyclohexadien-1-one should be the effective pharmacophore of RY10-4. RY10-4 got fine performance in anti-tumor and anti-angiogenesis assay, and thus, the quinol compound will be the new hot-spot for further anti-tumor agency development.

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Acknowledgments

This research was gratefully acknowledged by the grant (No. 30973864) from the National Nature Science Foundation of China, the grant (No. 2009CDA067) from the Nature Science Foundation of Hubei Province and the grant (No. 201260523182) from Wuhan Science and Technology Plan Foundation.

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Authors and Affiliations

  1. Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation of Hubei Province, College of Pharmacy, Huazhong University of Science and Technology, HangKong Road, Wuhan, 430070, Hubei Province, China

    Ziwei Liu, Qianying Yuan, Xuenong Zhang, Chaomei Xiong, Pingping Xue & Jinlan Ruan

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  1. Ziwei Liu
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  2. Qianying Yuan
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  3. Xuenong Zhang
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Correspondence to Jinlan Ruan.

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Liu, Z., Yuan, Q., Zhang, X. et al. RY10-4, a novel anti-tumor compound, exhibited its anti-angiogenesis activity by down-regulation of the HIF-1α and inhibition phosphorylation of AKT and mTOR. Cancer Chemother Pharmacol 69, 1633–1640 (2012). https://doi.org/10.1007/s00280-012-1873-3

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