Structure–Activity Relationship of Biakamide, Selective Growth Inhibitors under Nutrient-Starved Condition from Marine Sponge
作者:Ryosuke Ishida、Hirokazu Matsumoto、Sayaka Ichii、Motomasa Kobayashi、Masayoshi Arai、Naoyuki Kotoku
DOI:10.1248/cpb.c18-00587
日期:2019.3.1
The tumor microenvironment is considered as one of the important targets for anticancer drug discovery. In particular, nutrient deficiency may be observed in tumor microenvironment; biakamides A–D (1–4) isolated from marine sponge Petrosaspongia sp. as growth inhibitors against cancer cells adapted to glucose-deprived conditions have potential as new drugs and tools for elucidating adaptation mechanisms to these conditions. In this paper, we investigated structure–activity relationship (SAR) of biakamide to create easily accessible analog and gain insights about participation of the substructures to growth–inhibitory activity toward development of anticancer drug. This work revealed that 14,15-dinor-biakamide C (5), which is easily accessible, has similar activity to natural biakamide C (3). In addition, detailed SAR study showed the terminal acyl chain is important for interacting with target molecule and amide part including thiazole ring has acceptability to convert structures without losing activity.
肿瘤微环境被认为是抗癌药物发现的重要靶点之一。特别是在肿瘤微环境中可能观察到营养缺乏;从海洋海绵Petrosaspongia sp.中分离出的生物酰胺A-D(1-4)作为对适应于缺糖条件的癌细胞的生长抑制剂,具有作为新药和工具以阐明对这些条件适应机制的潜力。本文中,我们研究了生物酰胺的构效关系(SAR),以创建易于获取的类似物,并深入了解其子结构在生长抑制活性中的参与情况,以推动抗癌药物的发展。研究结果表明,易于获取的14,15-二去氢生物酰胺C(5)具有与天然生物酰胺C(3)相似的活性。此外,详细的SAR研究显示,末端酰链对于与靶分子的相互作用很重要,而包括噻唑环的酰胺部分可以在不损失活性的情况下转换结构。