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A new abyssomicin polyketide with anti-influenza A virus activity from a marine-derived Verrucosispora sp. MS100137

Abstract

Marine microorganisms live in dramatically different environments and have attracted much attention for their structurally unique natural products with potential strong biological activity. Based on the one strain-many compounds (OSMAC) strategy and liquid chromatography mass spectrometry (LC-MS) methods, our continuing efforts on the investigation of novel active compounds from marine Verrucosispora sp. MS100137 has led to the identification of a new polycyclic metabolite, abyssomicin Y (1), together with six known abyssomicin and proximicin analogs (27). Abyssomicin Y is a type I abyssomicin with an epoxide group at C-8 and C-9. Compounds 13 showed potent inhibitory effects against the influenza A virus; their observed inhibition rates were 97.9%, 98.3%, and 95.9%, respectively, at a concentration of 10 μM, and they displayed lower cytotoxicity than 4. The structures were determined by different NMR techniques and HRMS experiments. This investigation revealed that OSMAC could serve as a useful method for enabling the activation of the silent genes in the microorganism and for the formation of previously unreported active secondary metabolites.

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Funding

This work was partially supported by the grants from the National Natural Science Foundation of China (31430002, 31720103901, 21877038, 81573341, 21877124, 31320103911, 31670052), Taishan Scholarship, Open Project Funding of the State Key Laboratory of Bioreactor Engineering, the 111 Project (B18022), and the Fundamental Research Funds for the Central Universities (22221818014).

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Correspondence to Huanqin Dai, Lixin Zhang or Xueting Liu.

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Zhang, J., Li, B., Qin, Y. et al. A new abyssomicin polyketide with anti-influenza A virus activity from a marine-derived Verrucosispora sp. MS100137. Appl Microbiol Biotechnol 104, 1533–1543 (2020). https://doi.org/10.1007/s00253-019-10217-2

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  • DOI: https://doi.org/10.1007/s00253-019-10217-2

Keywords

  • Abyssomicin
  • Proximicin
  • Marine-derived Verrucosispora sp.
  • OSMAC
  • Anti-influenza A virus