阻止疟疾寄生虫Plasmodium falciparum吸收糖的结构基础
Xin Jiang1, Yafei Yuan2, Jian Huang3
1State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
研究人员阐明了疟疾寄生虫的结构
科学领域:
- 疟疾学
- 结构生物学
- 医学化学
背景情况:
- 疟疾寄生虫 (Plasmodium种类) 在血液阶段依赖葡萄糖获取能量.
- 抑制葡萄糖吸收是开发新抗疟疾药物的有希望的策略.
研究的目的:
- 用于确定与D-葡萄糖和一种抑制剂复合的Plasmodium falciparum hexose载体1 (PfHT1) 的晶体结构.
- 探索PfHT1作为一种新型抗疟疾药物开发的目标.
主要方法:
- 使用X射线结晶学获得PfHT1在2. 6 Å (用D- 葡萄糖) 和3. 7 Å (用C3361抑制剂) 的结构.
- 使用基于结构的药物设计来制造抑制剂C3361的衍生物.
- 进行了体外测定,以评估PfHT1抑制,细胞对P. falciparum的活性,以及对人类GLUT1的选择性.
主要成果:
- 晶体结构显示了pfht1的封闭形状,抑制剂结合诱导了额外的口袋.
- 设计的C3361衍生物显示出增强的PfHT1抑制和抗疟疾活性.
- 开发的化合物对人类GLUT1具有较高的PfHT1选择性.
结论:
- 抑制剂诱导的PfHT1口袋为合理的药物设计提供了新的途径.
- 针对pfht1的正位和位是下一代抗疟疾药物的可行策略.
- 这项研究为开发针对葡萄糖运输的强效和选择性抗疟药物提供了概念验证.
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