aggregate living bacteria in solution and are therefore also able to aggregate FimH when attached to different bacteria pili. The first in vivo evaluation of multivalent FimH inhibitors has been performed. The heptavalent β‐CDs proved to be much more effective anti‐adhesive agents than monovalent references with doses of around 2 μg instilled in the mouse bladder leading to a significantly decreased E. coli
正庚基α-
D-甘露糖苷(HM)先前已被确定为能够预防大肠杆菌的纳摩尔FimH拮抗剂附着力。我们设计了单价和七价糖缀合物,其中HM通过短和长间隔基团与β-
环糊精(β-CD)相连。开发了单罐点击或共点击程序,以直接从未保护的HM和β-CD前体中获得糖缀合物。对这些FimH拮抗剂进行了
生物物理和体内检查。等温量热法反向滴定导致短束缚的七价β-CD被困在具有三种FimH凝集素的复合物中。结合动态光散射和小角度X射线溶液散射数据,可以构建FimH三聚体的模型。七价β-CDs可以捕获并聚集溶液中的活细菌,因此,当附着在不同的细菌菌毛上时,它们也能够聚集FimH。已经进行了多价FimH
抑制剂的首次体内评估。七价β-CDs被证明是比单价参考有效的抗粘连剂,在小鼠膀胱中注入的剂量约为2μg,导致显着降低。大肠杆菌载量。静脉注射的放射性标记的糖缀合物可以迅速到达小鼠膀胱,并且在24小时内可以轻松保留大于2μg的浓度,以防止助焊剂细菌重新结合。