Salvador-Reyes Lilibeth A, Engene Niclas, Paul Valerie J, Luesch Hendrik
†Department of Medicinal Chemistry, University of Florida, 1345 Center Drive, Gainesville, Florida 32610, United States.
‡Marine Science Institute, College of Science, University of the Philippines, Diliman, Velasquez Street, Quezon City 1101, Philippines.
J Nat Prod. 2015 Mar 27;78(3):486-92. doi: 10.1021/np500931q. Epub 2015 Jan 30.
Combined phylogenetic and HPLC-MS-based natural products dereplication methods aimed at identifying cyanobacterial collections containing the potent cytotoxins largazole, dolastatin 10, and symplostatin 1 were developed. The profiling of the phylogeny, chemical space, and antiproliferative activity of cyanobacterial collections served to streamline the prioritization of samples for the discovery of new secondary metabolites. The dereplication methods highlighted the biosynthetic potential and combinatorial pharmacology employed by marine cyanobacteria. We found that largazole was always coproduced with dolastatin 10 or with symplostatin 1 and consequently tested combinations of these agents against colon cancer cells. Combinatorial regimens of largazole and dolastatin 10 aimed at curbing the growth of HCT116 cancer cells showed cooperative activity.
我们开发了基于系统发育和高效液相色谱-质谱联用的天然产物去重复方法,旨在鉴定含有强效细胞毒素拉加唑、多拉司他汀10和共生菌素1的蓝藻菌株。对蓝藻菌株的系统发育、化学空间和抗增殖活性进行分析,有助于简化发现新的次生代谢产物的样品优先级排序。去重复方法突出了海洋蓝藻所采用的生物合成潜力和组合药理学。我们发现拉加唑总是与多拉司他汀10或共生菌素1共同产生,因此测试了这些药物组合对结肠癌细胞的作用。旨在抑制HCT116癌细胞生长的拉加唑和多拉司他汀10联合方案显示出协同活性。