Structural elucidation and in vitro antitumor activity of a novel oligosaccharide from Bombyx batryticatus

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• 作者：Xue Jiang ; Zuofa Zhang ; Yajie Chen ; Zhenteng Cui ; Liangen Shi
• 关键词：Bombyx batryticatus ; Oligosaccharide ; Structural elucidation ; Antitumor activity
• 刊名：Carbohydrate Polymers
• 出版年：15 March, 2014
• 年：2014
• 卷：103
• 期：Complete
• 页码：434-441
• 全文大小：1986 K

文摘

An oligosaccharide BBPW-2 was isolated and purified from Bombyx batryticatus, its molecular weight was 2.0 脳 10³ Da, and its structure was elucidated by compositional, methylation and NMR analysis. Our results showed that BBPW-2 consisted of 尾-d-(1 鈫?#xA0;2,6)-glucopyranose and 尾-d-(1 鈫?#xA0;2,6)-mannosyl units serving as the backbone, 伪-d-(1 鈫?#xA0;2)-galactopyranose and 伪-d-(1 鈫?#xA0;3)-mannosyl units as branches, and 伪-d-Manp and 尾-d-Glcp as terminals. The in vitro inhibitory activity of BBPW-2 was measured using MTT and and crystal violet assays, which suggested that BBPW-2 had direct cytotoxic effects on the cancer cell lines HeLa and HepG2 (particularly HeLa cells), and had a long-term antiproliferative effect on MCF-7 cells, respectively. Apoptosis and cellcycle analysis of HeLa cells showed that BBPW-2 induced cellcycle disruption in the G0/G1 and G2/M phases accompanied by an impressive increment of early apoptotic cells and late apoptotic and necrotic cells. These results suggest that BBPW-2 could be a potential chemotherapeutic drug and its antitumor effects deserve further study.