Lights out for Superbugs: Is antimicrobial blue light a potential approach for future infection Control?
Gizem D Ozdemir1, Carolina Dos Anjos2, Mehmet A Ozdemir3
1Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA; Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, Izmir, Turkey.
Advanced Drug Delivery Reviews
|July 12, 2025
Summary
Antimicrobial blue light (aBL) offers a novel solution to combat antimicrobial resistance (AMR). This light-based therapy inactivates pathogens by generating reactive oxygen species, avoiding resistance development and showing promise in various applications.
Area of Science:
- Microbiology
- Biophysics
- Photomedicine
Background:
- Antimicrobial resistance (AMR) is a growing global health crisis, diminishing the effectiveness of conventional antibiotics.
- Novel therapeutic strategies are urgently needed to overcome drug-resistant pathogens.
Purpose of the Study:
- To review the mechanisms of action, applications, and challenges of antimicrobial blue light (aBL) therapy.
- To evaluate aBL's potential as an alternative to traditional antimicrobials.
Main Methods:
- Analysis of aBL's mechanism involving reactive oxygen species (ROS) generation.
- Review of current applications against bacterial, viral, and fungal pathogens.
- Evaluation of aBL in biofilm eradication and combination therapies.
Main Results:
- aBL inactivates microorganisms by generating ROS, targeting cellular components without inducing resistance.
- Demonstrated efficacy in treating various pathogens, including biofilms.
- Explored combination therapies with conventional antimicrobials and other innovations.
Conclusions:
- Antimicrobial blue light presents a promising, resistance-free alternative for treating infections.
- Further research is needed to address clinical translation challenges, including dosage optimization and safety.
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