Studies on glycolipids. Part VIII. Isolation and Identification of Anti-tumor-Promoting Principles from the Fresh-Water Cyanobacterium Phormidium tenue.
作者:Hideaki SHIRAHASHI、Nobutoshi MURAKAMI、Miyako WATANABE、Akito NAGATSU、Jinsaku SAKAKIBARA、Harukuni TOKUDA、Hoyoku NISHINO、Akio IWASHIMA
DOI:10.1248/cpb.41.1664
日期:——
Bioassay-directed fractionation of the extract of the cyanobacterium P. tenue led to the isolation of the three classes of glycolipids, viz., monogalactosyl diacylglycerol (MGDG), digalactosyl diacylglycerol (DGDG), and sulfo-quinovosyl diacylglycerol (SQDG) as anti-tumor-promoters. In comparing the anti-tumor-promoting effect of the three classes of glycolipids with various acyl residues, MGDG and DGDG inhibited tumor promotion more intensely than SQDG. With respect to MGDG and DGDG, the inhibitory activity of each glycolipid possessing a single pair of acyl residues was also investigated after HPLC separation. Among the 17 tested MGDGs (1a-h) and DGDGs (2a-i), three of the DGDGs (2a, b, e) showed more potent inhibitory activity toward tumor promotion than the others.
通过生物测定对蓝藻P. tenue的提取物进行分馏,分离出三类糖脂,即单半乳糖二酰基甘油(MGDG)、双半乳糖二酰基甘油(DGDG)和磺基奎诺维糖二酰基甘油(SQDG),作为抗肿瘤促进剂。在比较三类糖脂与各种酰基残基的抗肿瘤促进效果时,发现MGDG和DGDG比SQDG更强烈地抑制肿瘤促进。在HPLC分离后,还研究了每种糖脂(具有一对酰基残基)的抑制活性。在17