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Recent developments of sonodynamic therapy in antibacterial application.

Ruhao Wang1,2,3, Qianwen Liu1,2, Ang Gao1,2

  • 1Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment Instrument, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Shanghai 200240, P.R. China. zhangamin@sjtu.edu.cn.

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Sonodynamic therapy (SDT) offers a promising alternative to antibiotics for combating drug-resistant bacteria. This approach uses ultrasound to activate sonosensitizers, generating cell-killing reactive oxygen species (ROS) at infection sites.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Infectious Diseases

Background:

  • Pathogenic bacteria pose a significant global health threat, exacerbated by rising antibiotic resistance.
  • Traditional antibiotics face limitations due to the increasing prevalence of drug-resistant bacterial strains.
  • Sonodynamic therapy (SDT) presents a novel therapeutic strategy for treating bacterial infections.

Purpose of the Study:

  • To review current sonosensitizers used in antibacterial sonodynamic therapy (SDT).
  • To explore innovative biotechnologies for enhancing SDT efficacy against bacteria.
  • To discuss future research directions and challenges in antibacterial SDT.

Main Methods:

  • Literature review of sonosensitizers and advanced SDT strategies.
  • Analysis of techniques to improve sonosensitizer targeting and SDT efficiency.
  • Exploration of image-guided SDT, hypoxia mitigation, and combination therapies.

Main Results:

  • SDT utilizes low-intensity ultrasound to activate sonosensitizers, producing cytotoxic reactive oxygen species (ROS) for bacterial death.
  • Recent advancements focus on enhancing sonosensitizer targeting, image-guided SDT, addressing hypoxia, and combining SDT with other treatments.
  • SDT demonstrates potential for deep-tissue penetration and targeted bacterial eradication.

Conclusions:

  • Antibacterial SDT is a rapidly developing field with significant potential against drug-resistant bacteria.
  • Further research is needed to overcome current challenges and optimize SDT for clinical application.
  • Innovations in sonosensitizers and therapeutic strategies promise to improve SDT's effectiveness.