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Angucycline Glycosides from an Intertidal Sediments Strain Streptomyces sp. and Their Cytotoxic Activity against Hepatoma Carcinoma Cells.

ABSTRACT: Four angucycline glycosides including three new compounds landomycin N (1), galtamycin C (2) and vineomycin D (3), and a known homologue saquayamycin B (4), along with two alkaloids 1-acetyl-?-carboline (5) and indole-3-acetic acid (6), were isolated from the fermentation broth of an intertidal sediments-derived Streptomyces sp. Their structures were established by IR, HR-ESI-MS, 1D and 2D NMR techniques. Among the isolated angucyclines, saquayamycin B (4) displayed potent cytotoxic activity against hepatoma carcinoma cells HepG-2, SMMC-7721 and plc-prf-5, with IC50 values 0.135, 0.033 and 0.244 ?M respectively, superior to doxorubicin. Saquayamycin B (4) also induced apoptosis in SMMC-7721 cells as detected by its morphological characteristics in 4',6-diamidino-2-phenylindole (DAPI) staining experiment.

SUBMITTER: Peng A 

PROVIDER: S-EPMC6315490 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Angucycline Glycosides from an Intertidal Sediments Strain <i>Streptomyces</i> sp. and Their Cytotoxic Activity against Hepatoma Carcinoma Cells.

Peng Aihong A   Qu Xinying X   Liu Fangyuan F   Li Xia X   Li Erwei E   Xie Weidong W  

Marine drugs 20181127 12

Four angucycline glycosides including three new compounds landomycin N (<b>1</b>), galtamycin C (<b>2</b>) and vineomycin D (<b>3</b>), and a known homologue saquayamycin B (<b>4</b>), along with two alkaloids 1-acetyl-β-carboline (<b>5</b>) and indole-3-acetic acid (<b>6</b>), were isolated from the fermentation broth of an intertidal sediments-derived <i>Streptomyces</i> sp. Their structures were established by IR, HR-ESI-MS, 1D and 2D NMR techniques. Among the isolated angucyclines, saquayamy  ...[more]

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