Multivalent aminosaccharide-based gold nanoparticles as narrow-spectrum antibiotics in vivo.

Bacterial infection, especially multidrug-resistant (MDR) bacteria-induced wound infection is an enormous challenge, as the result of the inability of traditional antibiotics for combating MDR bacteria caused by the abuse of broad-spectrum drugs. Here, we present multivalent aminosaccharide-based gold nanoparticles (AuNPs) to remedy the superbug-infected wound. We synthesized multivalent aminosaccharide-based AuNPs via a straightforward method using D-glucosamine (GluN) to modify gold nanoparticles (AuNPs) as reported. This kind of multivalent aminosaccharide-based AuNPs (Au_GluN) can lower the bacterial viability in the mature biofilm that may lead to antibiotic resistance. Au_GluN is innocuous not only for erythrocytes in vitro, but also for mice. Moreover, it displays an outstanding ability for superbug-infected wound healing. Such material provides new candidates to treat bacteria in the clinic.