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Updated: Sep 16, 2025

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation
05:13

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation

Published on: January 24, 2025

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Photodynamic and photothermal therapies for bacterial infection treatment

Heejeong Kim1, You Rim Lee1, Hyunsun Jeong1

  • 1Department of Chemistry and Nanoscience Ewha Womans University Seoul Korea.

Smart Molecules : Open Access
|July 8, 2025
PubMed

Insights

Photodynamic therapy (PDT) and photothermal therapy (PTT) offer promising noninvasive treatments against bacterial infections. These light-based therapies are particularly effective against challenging multidrug-resistant bacteria.

Area of Science:

  • Biomedical Engineering
  • Photomedicine
  • Antimicrobial Research

Background:

  • Bacterial infections pose significant global health threats.
  • Antibiotic resistance has emerged as a critical challenge due to widespread antibiotic abuse.
  • The declining efficacy of conventional antibiotics necessitates novel therapeutic strategies.

Purpose of the Study:

  • To review recent advancements in photodynamic therapy (PDT) for bacterial treatment.
  • To explore the application of photothermal therapy (PTT) in combating bacterial infections.
  • To highlight the potential of PDT and PTT against multidrug-resistant (MDR) bacteria.

Main Methods:

  • Review of current literature on antimicrobial PDT and PTT.
  • Analysis of mechanisms underlying light-based bacterial inactivation.
  • Synthesis of recent research on PDT and PTT efficacy against various bacterial strains.

Main Results:

  • PDT utilizes light and photosensitizers to generate reactive oxygen species, leading to bacterial cell death.
  • PTT employs light absorption to induce hyperthermia, effectively killing bacteria.
  • Both PDT and PTT demonstrate significant efficacy against bacterial infections, including MDR strains.

Conclusions:

  • Antimicrobial PDT and PTT represent effective, noninvasive therapeutic modalities for bacterial infections.
  • These light-based therapies offer a promising alternative to conventional antibiotics, especially for MDR pathogens.
  • Continued research in PDT and PTT is crucial for developing advanced treatments against bacterial threats.
Keywords:
AIEgensantibacterial phototherapyphotodynamic therapyphotothermal therapyphthalocyanine

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