2010
DOI: 10.1016/j.bmc.2010.06.072
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The marine sponge metabolite mycothiazole: A novel prototype mitochondrial complex I inhibitor

Abstract: A natural product chemistry-based approach was applied to discover small-molecule inhibitors of hypoxia-inducible factor-1 (HIF-1). A Petrosaspongia mycofijiensis marine sponge extract yielded mycothiazole (1), a solid tumor selective compound with no known mechanism for its cell linedependent cytotoxic activity. Compound 1 inhibited hypoxic HIF-1 signaling in tumor cells (IC 50 1 nM) that correlated with the suppression of hypoxia-stimulated tumor angiogenesis in vitro. However, 1 exhibited pronounced neuroto… Show more

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Cited by 50 publications
(60 citation statements)
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References 23 publications
(32 reference statements)
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“…3.3), a metabolite isolated from a Petrosaspongia mycofijiensis sponge, inhibited hypoxic HIF-1 signaling in tumor cells in the nanomolar range, what correlated with the suppression of hypoxia-stimulated VEGF secretion by tumor and angiogenesis in vitro. Nevertheless, the high neurotoxicity of this compound, that selectively suppresses the mitochondrial respiration at complex I (NADH-ubiquinone oxidoreductase) prevents its use as an anticancer drug [82].…”
Section: Compounds That Inhibit the Activation Of The Angiogenic Switchmentioning
confidence: 99%
“…3.3), a metabolite isolated from a Petrosaspongia mycofijiensis sponge, inhibited hypoxic HIF-1 signaling in tumor cells in the nanomolar range, what correlated with the suppression of hypoxia-stimulated VEGF secretion by tumor and angiogenesis in vitro. Nevertheless, the high neurotoxicity of this compound, that selectively suppresses the mitochondrial respiration at complex I (NADH-ubiquinone oxidoreductase) prevents its use as an anticancer drug [82].…”
Section: Compounds That Inhibit the Activation Of The Angiogenic Switchmentioning
confidence: 99%
“…Mechanistic studies revealed that mycothiazole selectively suppresses mitochondrial respiration at complex I (NADH-ubiquinone oxidoreductase), may serve as a valuable molecular probe for mitochondrial biology and HIF-mediated hypoxic signaling [90]. …”
Section: Peptides That Inhibit Angiogenesismentioning
confidence: 99%
“…[1] It exhibits toxicity towards lung cancer cells [2] and very recently was proven to be a valuable novel prototype of mitochondrial complex I inhibitor. [3] Its unique structure as well as its potential pharmacological activities make it a good target for laboratories interested in the total synthesis of biologically active natural compounds. There are only two total syntheses of mycothiazole (1) [2,4] and three partial syntheses published so far [5] but these lead to the wrong stereochemistry at the C14-C15 double bond, which was first claimed to be E and finally revised to Z.…”
Section: Introductionmentioning
confidence: 99%