title: A smart aminoglycoside hydrogel with tunable gel degradation, on-demand drug release, and high antibacterial activity.
abstract: Aminoglycosides are a family of critically important antibiotics for the treatment of serious infections including multidrug-resistant pathogens. However, clinical use of aminoglycoside antibiotics is compromised by bacterial biofilm formation at subinhibitory concentrations or adverse side effects such as ototoxicity and nephrotoxicity at high antibiotic doses. Preparation of aminoglycoside formulation that allows on-demand drug delivery is a solution to this sticky issue. Here, we designed a new type of aminoglycoside hydrogels by cross-linking oxidized polysaccharides such as dextran, carboxymethyl cellulose, alginate, and chondroitin using aminoglycosides as cross-linkers. The hydrogel modulus, degradation rate and release kinetics can be precisely modulated by tailoring the aminoglycoside dose during gel formation. The aminoglycoside hydrogel showed fast gelation, self-healing and on-demand drug release behaviors, and high antibacterial activities in vitro and in vivo against both Gram-positive and Gram-negative bacteria. This study provides a facile and promising strategy to develop smart hydrogels for topical administration of aminoglycoside antibiotics.
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Hu
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Yanchun
authors.initials: Y
authors.lastname: Quan
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Yuping
authors.initials: Y
authors.lastname: Lai
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Zheng
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Zhiqi
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Xinyu
authors.initials: X
authors.lastname: Wang
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Tianjiao
authors.initials: T
authors.lastname: Dai
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China. Electronic address: yycheng@mail.ustc.edu.cn.
authors.forename: Yiyun
authors.initials: Y
authors.lastname: Cheng
mesh_terms: D000617:Aminoglycosides / Q000008:administration & dosage* / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage* / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D001419:Bacteria / Q000187:drug effects; D001424:Bacterial Infections / Q000188:drug therapy; D003692:Delayed-Action Preparations / Q000737:chemistry*; D065546:Drug Liberation; D005260:Female; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry*; D051379:Mice; D041681:NIH 3T3 Cells; D010084:Oxidation-Reduction; D011134:Polysaccharides / Q000737:chemistry; D013203:Staphylococcal Infections / Q000188:drug therapy; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; D003692:Delayed-Action Preparations; D011134:Polysaccharides; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate
keywords: Aminoglycoside antibiotics; Bacterial infection; On-demand release; Responsive; Smart hydrogels