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Mar. Drugs 2017, 15(7), 200; doi:10.3390/md15070200

A Novel Benzoquinone Compound Isolated from Deep-Sea Hydrothermal Vent Triggers Apoptosis of Tumor Cells

College of Life Sciences and Laboratory for Marine Biology and Biotechnology of Qingdao National Laboratory for Marine Science and Technology, Zhejiang University, Hangzhou 310058, China
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Received: 16 April 2017 / Revised: 2 June 2017 / Accepted: 16 June 2017 / Published: 26 June 2017
(This article belongs to the Special Issue Bioactive Compounds from Marine Microbes II, 2017)
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Abstract

Microorganisms are important sources for screening bioactive natural products. However, natural products from deep-sea microbes have not been extensively explored. In this study, the metabolites of bacteriophage GVE2 -infected (Geobacillus sp. E263 virus) thermophilic bacterium Geobacillus sp. E263, which was isolated from a deep-sea hydrothermal vent, were characterized. A novel quinoid compound, which had anti-tumor activity, was isolated from the phage-challenged thermophile. The chemical structure analysis showed that this novel quinoid compound was 2-amino-6-hydroxy-[1,4]-benzoquinone. The results indicated that 2-amino-6-hydroxy-[1,4]-benzoquinone and its two derivatives could trigger apoptosis of gastric cancer cells and breast cancer cells by inducing the accumulation of intracellular reactive oxygen species. Therefore, our study highlighted that the metabolites from the phage-challenged deep-sea microbes might be a kind of promising sources for anti-tumor drug discovery, because of the similarity of metabolic disorder between bacteriophage-infected microbes and tumor cells. View Full-Text
Keywords: deep-sea hydrothermal vent; thermophile; bacteriophage; benzoquinone; anti-tumor deep-sea hydrothermal vent; thermophile; bacteriophage; benzoquinone; anti-tumor
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Xu, C.; Sun, X.; Jin, M.; Zhang, X. A Novel Benzoquinone Compound Isolated from Deep-Sea Hydrothermal Vent Triggers Apoptosis of Tumor Cells. Mar. Drugs 2017, 15, 200.

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