2. Academic Validation
  3. Marine isolate Citricoccus sp. KMM 3890 as a source of a cyclic siderophore nocardamine with antitumor activity

Marine isolate Citricoccus sp. KMM 3890 as a source of a cyclic siderophore nocardamine with antitumor activity

  • Microbiol Res. 2011 Dec 20;166(8):654-61. doi: 10.1016/j.micres.2011.01.004.
Nataliya I Kalinovskaya 1,  Lyudmila A Romanenko,  Tomohiro Irisawa,  Svetlana P Ermakova,  Anatoly I Kalinovsky
Affiliations

Affiliation

  • 1 Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences, Prospect 100 Let Vladivostoku 159, Vladivostok, Russian Federation. [email protected]
PMID: 21376551 DOI: 10.1016/j.micres.2011.01.004
Abstract

A novel actinobacterium, designated KMM 3890 was isolated from a bottom sediment sample collected from the Sakhalin shallow environment. Phylogenetic analysis based on 16S rRNA gene sequences demonstrated strain KMM 3890 affiliation to the genus Citricoccus. In addition to its hemolytic activity, this strain exhibited inhibitory activity against Gram-positive bacteria. It was found that the marine isolate Citricoccus sp. KMM 3890 produced and excreted into the culture medium a large amount of the compound, which was isolated and structurally characterized as known cyclic siderophore nocardamine on the basis of combined spectral analyses. Nocardamine showed inhibitory effects to colony formation of T-47D, SK-Mel-5, SK-Mel-28 and PRMI-7951 tumor cell lines and a weak antimicrobial against Gram-positive bacteria and no revealed cytotoxic activity. This study can be considered as the first report on marine isolate of the genus Citricoccus producing nocardamine with antitumor activity.

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