硫胺衍生型银河胺选择性地准了加勒-9N终端域中的未开发的结合部位
Mukul Mahanti1, Sofi Gummesson1, Anders Sundin1
1Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden.
Bioorganic & medicinal chemistry
|November 16, 2024
概括
研究人员开发了新的硫胺衍生型银酸,发现了一种强效和选择性抑制剂,用于 galectin-9N. 这种化合物为研究加勒-9提供了有价值的工具.
科学领域:
- 碳水化合物化学 碳水化合物化学
- 药用化学 医学化学
- 结构生物学 结构生物学
背景情况:
- 盖莱克是一种beta-galactoside结合蛋白的家族,涉及到各种生物过程.
- 准特定的质素,如质素-9N,对于理解它们的作用和开发治疗方法至关重要.
- 开发选择性抑制剂仍然是一个挑战,因为加勒素家族成员之间保留了结合点.
研究的目的:
- 为了合成和评估新的硫胺衍生型银酸化物作为潜在的加勒胺抑制剂.
- 为了识别具有高亲和力和对特定加勒子类型的选择性化合物,特别是加勒-9N.
- 通过分子动力学模拟,阐明选择性抑制剂的结合机制.
主要方法:
- 合成了硫胺衍生型银酸的四种定向和定位变体.
- 合成化合物的体外评价与人类胆素 (胆素-1, -3, -4C, -7, -8N, -8C, -9N, -9C) 的一个小组对比.
- 分子动态模拟以调查抑制剂-蛋白相互作用和结合点互补性.
主要成果:
- 一种合成的化合物,甲基3-{4-[2-(phenylsulfonylamino) -phenyl]-triazolyl}-3-deoxy-α-d-galactopyranosides,与其非硫胺对应物相比,对加列-9N的亲和力是6-15倍.
- 分子动力学模拟揭示了一种独特的结合模式,其中硫胺部分与加勒-9N的非保存区域相互作用.
- 鉴定到的抑制剂对其它测试过的 galectin-9N 具有前所未有的选择性.
结论:
- 新型硫胺衍生型银酸可以作为加勒-9N的强效和选择性抑制剂.
- 由硫胺组介导的独特结合相互作用为实现高选择性提供了一种策略.
- 这些选择性加勒-9N抑制剂代表了研究加勒生物学的有价值的化学探针.
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