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Open AccessArticle

New Metabolites and Bioactive Actinomycins from Marine-Derived Streptomyces sp. ZZ338

1
Ocean College, Zhejiang University, Zhoushan 316021, China
2
College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Vassilios Roussis
Mar. Drugs 2016, 14(10), 181; https://doi.org/10.3390/md14100181
Received: 21 August 2016 / Revised: 20 September 2016 / Accepted: 21 September 2016 / Published: 11 October 2016
An extract prepared from the culture of a marine-derived actinomycete Streptomyces sp. ZZ338 was found to have significant antimicrobial and antiproliferative activities. A chemical investigation of this active extract resulted in the isolation of three known bioactive actinomycins (13) and two new metabolites (4 and 5). The structures of the isolated compounds were identified as actinomycins D (1), V (2), X (3), 2-acetylamino-3-hydroxyl-4-methyl-benzoic acid methyl ester (4), and N-1S-(4-methylaminophenylmethyl)-2-oxo-propyl acetamide (5) based on their nuclear magnetic resonance (NMR) and high resolution electrospray ionization mass spectroscopy (HRESIMS) data as well as their optical rotation. This class of new compound 5 had never before been found from a natural resource. Three known actinomycins showed activities in inhibiting the proliferation of glioma cells and the growth of methicillin-resistant Staphylococcus aureus, Escherichia coli, and Candida albicans and are responsible for the activity of the crude extract. Actinomycin D (1) was also found to downregulate several glioma metabolic enzymes of glycolysis, glutaminolysis, and lipogenesis, suggesting that targeting multiple tumor metabolic regulators might be a new anti-glioma mechanism of actinomycin D. This is the first report of such a possible mechanism for the class of actinomycins. View Full-Text
Keywords: marine Streptomyces sp. ZZ338; new metabolites; actinomycins; antimicrobial activity; antiproliferative activity; glioma cells; glioma metabolic enzymes marine Streptomyces sp. ZZ338; new metabolites; actinomycins; antimicrobial activity; antiproliferative activity; glioma cells; glioma metabolic enzymes
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MDPI and ACS Style

Zhang, X.; Ye, X.; Chai, W.; Lian, X.-Y.; Zhang, Z. New Metabolites and Bioactive Actinomycins from Marine-Derived Streptomyces sp. ZZ338. Mar. Drugs 2016, 14, 181.

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