Synthesis and Antitumor Activities of Glycine-exchanged Analogs of Spicamycin.
作者:TERUYUKI SAKAI、HIROYUKI KAWAI、MASARU KAMISHOHARA、ATSUO ODAGAWA、AKASHI SUZUKI、TAKESHI UCHIDA、TOMIKO KAWASAKI、TAKASHI TSURUO、NOBORU OTAKE
DOI:10.7164/antibiotics.48.504
日期:——
A series of SPM VIII analogs were synthesized to investigate the effect of the amino acid moiety on the antitumor activity. The L-threonine analog and the glycylglycine analog of SPM VIII showed much higher cytotoxity to P388 murine leukemia cells (IC50 5.8 nM and 0.11 nM, respectively) than SPM VIII (IC50 25 nM). However, replacement of the glycine moiety with other amino acids greatly reduced the antitumor activity against COL-1 human colon cancer xenograft model. This study indicated that the glycine moiety of SPM VIII is crucial for the antitumor effect.
合成了一系列SPM VIII的类似物,以研究氨基酸部分对抗肿瘤活性的影响。L-苏氨酸类似物和甘氨酸甘氨酸类似物对P388小鼠白血病细胞的细胞毒性明显高于SPM VIII(IC50分别为5.8 nM和0.11 nM,而SPM VIII的IC50为25 nM)。然而,用其他氨基酸替代甘氨酸部分则显著降低了对COL-1人结肠癌异种移植模型的抗肿瘤活性。这项研究表明SPM VIII的甘氨酸部分对抗肿瘤效果至关重要。