An Antimicrobial Phototherapeutic Agent

  • Author: ChemPhysChem
  • Published Date: 22 June 2019
  • Source / Publisher: ChemPhysChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: An Antimicrobial Phototherapeutic Agent

Related Societies

The emergence of multidrug-resistant microorganisms is becoming a serious problem in medicine. Photodynamic inactivation (PDI) is a promising therapy for treating microbial infections. A photosensitizer quickly binds to microbial cells. The aerobic irradiation of the microorganism with visible light induces the formation of reactive oxygen species (ROS). They react with the biomolecules in the cells which leads to the cell death. The method requires the development of specific and efficient phototherapeutic agents to attack the microbial cells. Fullerene C60 derivatives are effective photosensitizers.

Edgardo Durantini and colleagues, Universidad Nacional de Rio Cuarto, Cordoba, Argentina, have developed a covalently linked boron-dipyrromethene (BODIPY)–fullerene C60 dyad for use as a phototherapeutic agent in PDI treatments. The material consists of a visible-light-harvesting antenna (boron-dipyrromethene) attached to an energy- or electron-acceptor moiety (C60). 

The team used this phototherapeutic agent Staphylococcus aureus and Escherichia coli. After 15 minutes of irradiation at physiological pH, the team observed a strong decrease in cell survival (>99.997 %) for S. aureus. Similar results were obtained for E. coli after 30 min of irradiation. According to the researchers, their results demonstrate that the light-harvesting-antenna effect of the BODIPY unit combined with the proton-activated photodynamic effect can be used to efficiently inactivate bacteria.


Article Views: 1215

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH