三脚跨膜离子载体中的结构-活性关系:化效应的影响
Nathalie Busschaert1, Marco Wenzel, Mark E Light
1Chemistry, University of Southampton, UK.
Journal of the American Chemical Society
|August 18, 2011
概括
新的化三脚分子有效地将化物离子穿过细胞膜. 这些阴离子载体显示出诱导人类癌细胞的亡的潜力,突出显示了它们的治疗可能性.
科学领域:
- 超分子化学 超分子化学
- 化学生物学 化学生物学
- 材料科学 材料科学 材料科学
背景情况:
- 阳离子载体对于生物过程至关重要.
- 开发具有高效率和选择性的合成传送器是一个关键的挑战.
- 化化合物往往表现出独特的特性,有利于分子运输.
研究的目的:
- 为了合成和表征新的化三脚离子载体.
- 研究化物在脂质双层中运输的机制和效率.
- 评估这些载体在诱导癌细胞亡中的潜力.
主要方法:
- 基于尿素和硫尿素的化三脚分子的合成.
- 使用离子选择性电极进行囊泡离子运输测试.
- 脂友性 (堵塞P) 的计算和与运输活动的相关性.
- 质子NMR定位和单晶X射线衍射用于结合研究.
- 在体外癌细胞活力和光测试以评估亡诱导.
主要成果:
- 成功制备了易于制造的化三脚离子载体.
- 通过多种机制 (例如共运输,反运输) 证明了高效的跨膜化物运输.
- 建立了增加化,脂性 (最佳堵塞P = 8) 和增强的运输活动之间的相关性.
- 确定了一种高度活跃的转运体 (化合物5),在非常低的受体:脂质比率 (1:250,000) 上有效.
- 证实了具有不同亲和度和固态度 (1:1或2:1) 的离子结合.
- 提供了强大的载体诱导人类癌细胞的亡的证据.
结论:
- 化三脚尿素/硫尿素化合物是有效的合成阳离子载体.
- 脂性是优化跨膜运输效率的关键因素.
- 最强大的载体通过诱导亡,表现出有前途的抗癌活性.
- 这些化合物代表了化学生物学和医学进一步发展的有价值的类别.
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