• 文献标题:   Inhibiting the VIM-2 Metallo-beta-Lactamase by Graphene Oxide and Carbon Nanotubes
  • 文献类型:   Article
  • 作  者:   HUANG PJJ, PAUTLER R, SHANMUGARAJ J, LABBE G, LIU JW
  • 作者关键词:   graphene, betalactamase, inhibition, adsorption, carbon nanotube, nanomaterial
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244
  • 通讯作者地址:   Univ Waterloo
  • 被引频次:   6
  • DOI:   10.1021/acsami.5b01954
  • 出版年:   2015

▎ 摘  要

Metallo-beta-lactamases (MBLs) degrade a broad spectrum of antibiotics including the latest carbapenems. So far, limited success has been achieved in developing its inhibitors using small organic molecules. VIM-2 is one of the most studied and important MBLs. In this work, we screened 10 nanomaterials, covering a diverse range of surface properties including charge, hydrophobicity, and specific chemical bonding. Among these, graphene oxide and carbon nanotubes are the most potent inhibitors, while most other materials do not show much inhibition effect. The inhibition is noncompetitive and is attributed to the hydrophobic interaction with the enzyme. Adsorption of VIM-2 was further probed using protein displacement assays where it cannot displace or be displaced by bovine serum albumin (BSA). This information is useful for rational design inhibitors for MBLs and more specific inhibition might be achieved by further surface modifications on these nanocarbons.