Bacterial Biofilm Material Properties Enable Removal and Transfer by Capillary Peeling

Jing Yan, Alexis Moreau, Sepideh Khodaparast, Antonio Perazzo, Jie Feng, Chenyi Fei, Sheng Mao, Sampriti Mukherjee, Andrej Kosmrlj, Ned S. Wingreen, Bonnie Lynn Bassler, Howard A. Stone

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Biofilms, surface-attached communities of bacterial cells, are a concern in health and in industrial operations because of persistent infections, clogging of flows, and surface fouling. Extracellular matrices provide mechanical protection to biofilm-dwelling cells as well as protection from chemical insults, including antibiotics. Understanding how biofilm material properties arise from constituent matrix components and how these properties change in different environments is crucial for designing biofilm removal strategies. Here, using rheological characterization and surface analyses of Vibrio cholerae biofilms, it is discovered how extracellular polysaccharides, proteins, and cells function together to define biofilm mechanical and interfacial properties. Using insight gained from our measurements, a facile capillary peeling technology is developed to remove biofilms from surfaces or to transfer intact biofilms from one surface to another. It is shown that the findings are applicable to other biofilm-forming bacterial species and to multiple surfaces. Thus, the technology and the understanding that have been developed could potentially be employed to characterize and/or treat biofilm-related infections and industrial biofouling problems.

Original languageEnglish (US)
Article number1804153
JournalAdvanced Materials
Volume30
Issue number46
DOIs
StatePublished - Nov 15 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • adhesion energy
  • antibiotics
  • biofilms
  • fracture
  • rheology

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