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细胞生长抑制剂Dolastatin 15类似物的合成及其活性研究

郄建坤, 梁远军, 吴萍, 何军林, 赵修南, 周文霞, 张永祥, 刘克良   

  1. 军事医学科学院毒物药物研究所, 北京 100850
  • 收稿日期:2008-07-07 修回日期:1900-01-01 出版日期:2009-02-10 发布日期:2009-02-10
  • 通讯作者: 刘克良

Synthesis of Cell Growth Inhibitor Dolastatin 15 Analogues and Their Activities

QIE Jian-Kun, LIANG Yuan-Jun, WU Ping, HE Jun-Lin, ZHAO Xiu-Nan, ZHOU Wen-Xia, ZHANG Yong-Xiang, LIU Ke-Liang*   

  1. Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
  • Received:2008-07-07 Revised:1900-01-01 Online:2009-02-10 Published:2009-02-10
  • Contact: LIU Ke-Liang

摘要: 通过在细胞生长抑制剂Dolastatin 15(D15)的N端引入含环胺基的非天然氨基酸1~3, 赋予其构象限制和疏水性, 设计合成了21个结构类似物, 并进行了体外抑制肿瘤细胞生长的活性评价. 结果表明, 部分化合物显示出较好的抑制肿瘤细胞生长活性, 同时探讨了初步的构效关系.

关键词: 细胞生长抑制剂, Dolastatin 15类似物, 线性肽, 海洋生物活性肽

Abstract: Dolastatin 15(D15)was a linear depsipeptide with two N-methylated valines and a complex C-terminal, showing potent cell growth inhibitory activity. D15 was highly alkylation and with spacial constraints. Modifications at D15’s N-terminal were performed by introducing three unnatural amino acid analogs 13 with more conformation-restriction and hydrophobicity. Twenty-one compounds were synthesized, and their activities were evaluated in vitro on human tumor cell lines K562, OVCA2780 and Kato-Ⅲ. Some compounds exhibited modest potency compared to compound LU103793, an analog of D15, evaluated in clinical phase Ⅱ now. A primary structure-activity relationship was summarized about the N-terminal.

Key words: Cell growth inhibitor, Dolastatin 15 analogs, Linear peptide, Marine bioactive peptide

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