RT Journal Article T1 Lobophorin K, a New Natural Product with Cytotoxic Activity Produced by Streptomyces sp M-207 Associated with the Deep-Sea Coral Lophelia pertusa A1 Brana, Alfredo F. A1 Sarmiento-Vizcaino, Aida A1 Osset, Miguel A1 Perez-Victoria, Ignacio A1 Martin, Jesus A1 de Pedro, Nuria A1 de la Cruz, Mercedes A1 Diaz, Caridad A1 Vicente, Francisca A1 Reyes, Fernando A1 Garcia, Luis A. A1 Blanco, Gloria K1 lobophorins K1 spirotetronate antibiotic K1 Streptomyces K1 antitumor K1 Cantabrian Sea-derived actinobacteria K1 Spirotetronate antibiotics K1 Metabolites AB The present article describes the isolation of a new natural product of the lobophorin family, designated as lobophorin K (1), from cultures of the marine actinobacteria Streptomyces sp. M-207, previously isolated from the cold-water coral Lophelia pertusa collected at 1800 m depth during an expedition to the submarine Aviles Canyon. Its structure was determined using a combination of spectroscopic techniques, mainly ESI-TOF MS and 1D and 2D NMR. This new natural product displayed cytotoxic activity against two human tumor cell lines, such as pancreatic carcinoma (MiaPaca-2) and breast adenocarcinoma (MCF-7). Lobophorin K also displayed moderate and selective antibiotic activity against pathogenic Gram-positive bacteria such as Staphylococcus aureus. PB Mdpi YR 2017 FD 2017-05-01 LK http://hdl.handle.net/10668/19298 UL http://hdl.handle.net/10668/19298 LA en DS RISalud RD Apr 5, 2025