%0 Journal Article %T Isolation and Assessment of the in Vitro Anti-Tumor Activity of Smenothiazole A and B, Chlorinated Thiazole-Containing Peptide/Polyketides from the Caribbean Sponge, Smenospongia aurea %A Germana Esposito %A Roberta Teta %A Roberta Miceli %A Luca S. Ceccarelli %A Gerardo Della Sala %A Rosa Camerlingo %A Elena Irollo %A Alfonso Mangoni %A Giuseppe Pirozzi %A Valeria Costantino %J Marine Drugs %P 444-459 %D 2015 %I MDPI AG %R 10.3390/md13010444 %X The study of the secondary metabolites contained in the organic extract of Caribbean sponge Smenospongia aurea led to the isolation of smenothiazole A ( 3) and B ( 4), hybrid peptide/polyketide compounds. Assays performed using four solid tumor cell lines showed that smenothiazoles exert a potent cytotoxic activity at nanomolar levels, with selectivity over ovarian cancer cells and a pro-apoptotic mechanism. %K Smenospongia aurea %K marine natural products %K thiazole %K structure elucidation %K anti-tumor lead molecules %K smenamides %K solid tumor cell lines %K apoptosis %K MTT assays %U http://www.mdpi.com/1660-3397/13/1/444