Photocontrol of Antibacterial Activity: Shifting from UV to Red Light Activation.
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Your vote was cast
Thank you for your feedback
Thank you for your feedback
MetadataShow full item record
AbstractThe field of photopharmacology aims to introduce smart drugs that, through the incorporation of molecular photoswitches, allow for the remote spatial and temporal control of bioactivity by light. This concept could be particularly beneficial in the treatment of bacterial infections, by reducing the systemic and environmental side effects of antibiotics. A major concern in the realization of such light-responsive drugs is the wavelength of the light that is applied. Studies on the photocontrol of biologically active agents mostly rely on UV light, which is cytotoxic and poorly suited for tissue penetration. In our efforts to develop photoswitchable antibiotics, we introduce here antibacterial agents whose activity can be controlled by visible light, while getting into the therapeutic window. For that purpose, a UV-light-responsive core structure based on diaminopyrimidines with suitable antibacterial properties was identified. Subsequent modification of an azobenzene photoswitch moiety led to structures that allowed us to control their activity against Escherichia coli in both directions with light in the visible region. For the first time, full in situ photocontrol of antibacterial activity in the presence of bacteria was attained with green and violet light. Most remarkably, one of the diaminopyrimidines revealed an at least 8-fold difference in activity before and after irradiation with red light at 652 nm, showcasing the effective "activation" of a biological agent otherwise inactive within the investigated concentration range, and doing so with red light in the therapeutic window.
AffiliationHZI,Helmholtz-Zentrum für Infektionsforschung GmbH, Inhoffenstr. 7,38124 Braunschweig, Germany.
The following license files are associated with this item:
- Creative Commons
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States
- Indigoid Photoswitches: Visible Light Responsive Molecular Tools.
- Authors: Petermayer C, Dube H
- Issue date: 2018 May 15
- Red-light modulated ortho-chloro azobenzene photoswitch for peptide stapling via aromatic substitution.
- Authors: Kapun M, Pérez-Areales FJ, Ashman N, Rowling PJE, Schober T, Fowler E, Itzhaki LS, Spring DR
- Issue date: 2024 Jan 3
- Smart Wearable Patches Using Light-Controlled Activation and Delivery of Photoswitchable Antimicrobial Peptides.
- Authors: Kalyvas JT, Facal Marina P, Stachura DL, Horsley JR, Abell AD
- Issue date: 2023 Aug 15
- Ciprofloxacin-Photoswitch Conjugates: A Facile Strategy for Photopharmacology.
- Authors: Velema WA, Hansen MJ, Lerch MM, Driessen AJ, Szymanski W, Feringa BL
- Issue date: 2015 Dec 16
- Switching Thin Films of Azobenzene-Containing Metal-Organic Frameworks with Visible Light.
- Authors: Müller K, Knebel A, Zhao F, Bléger D, Caro J, Heinke L
- Issue date: 2017 Apr 24