项目名称: 以蛋白酪氨酸磷酸酶为靶点的抗肿瘤金配合物的设计合成及作用机理研究
项目编号: No.21301150
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 王清明
作者单位: 盐城师范学院
项目金额: 24万元
中文摘要: 金类配合物在恶性肿瘤的化学治疗中占据一定地位,由于目前研究所选择的肿瘤细胞株及实验条件的差异,使实验结果缺乏可比性和系统性,因而导致其抗癌机制仍不清楚,特别是生物靶分子不够明确。蛋白酪氨酸磷酸酶(PTPs)的活性异常与恶性肿瘤的发生发展密切相关,已经成为抗肿瘤药物研发的一个新型靶点。因此本课题拟以具生物活性物质为配体设计、合成并表征一系列新型的金类配合物,筛选出能够高效且特异性抑制PTPs 的金类配合物,通过稳态动力学实验、各种光谱学实验、配合物与蛋白复合物晶体培养以及分子动力学理论计算等方法来详细阐明金类配合物与PTPs 的相互作用机理,并对抑制活性较高、选择性好的金配合物进行深入的抗肿瘤活性研究。本项目研究对进一步阐明金类配合物的抗肿瘤机制有着重要的科学意义,对发展新型高效、低毒靶向PTPs的金类抗癌药物有着一定的实用意义。
中文关键词: 蛋白酪氨酸磷酸酶;金属配合物;抑制活性;抗肿瘤;抑制机理
英文摘要: Gold complexes play an important role in chemical therapy of malignant tumor. Owing to a large number of research focusing on in vitri antitumor activity and receiving inconsistent conclusion, the mechanism remains unclear especially the target protein. the initiation and progression of tumor is involved in the dysregulation of protein trysine phosphatase(PTPs) activities. which makes PTPs as potential therapeutic target for antitumor. Here, we apply biological source materials to design, synthesize and characterize a series of gold complexes, which can be selected efficiently and specifically as inhibitors through PTPs inhibition experiments. The mechanism is studied through steady-state kinetic experiments, varies of spectroscopic experiments, preparation of crystal structures of PTPs with gold complexes through crystal soaking or eutectic. Thus, this research would provide evidences in solving the mystery of mechanism, and benefit for the development of new high-efficient antitumor with low toxicity as well. Besides, it is also benefit for developing tne antitumor metallodrugs.
英文关键词: Protein tyrosine phosphatase;Metal complex;Inhibit activity;Anti-cancer;Inhibition mechanism