Belamide A, a new antimitotic tetrapeptide from a Panamanian marine cyanobacterium
2006; Elsevier BV; Volume: 47; Issue: 20 Linguagem: Inglês
10.1016/j.tetlet.2006.03.082
ISSN1873-3581
AutoresThomas L. Simmons, Kerry L. McPhail, Eduardo Ortega-Barrı́a, Susan L. Mooberry, William H. Gerwick,
Tópico(s)Marine Sponges and Natural Products
ResumoThe isolation and structure elucidation of belamide A from the marine cyanobacterium Symploca sp. is described. Belamide A is a highly methylated linear tetrapeptide with structural analogy to the important linear peptides dolastatins 10 and 15. Disruption of the microtubule network in A-10 cells was observed at 20 μM and displayed classic tubulin destabilizing antimitotic characteristics. The moderate cytotoxicity of belamide A (IC50 0.74 μM vs HCT-116 colon cancer line) provides new insights into structure–activity relationships for this drug class.
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