A visual guide to gene/optothermal synergy therapy nanosystem using tungsten oxide

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Oncology

Background:

• Gene therapy and photothermal therapy (PTT) are promising cancer treatments.
• Current combined therapies lack fluorescence imaging guidance, limiting clinical application.
• Tungsten oxide (WO) nanoparticles offer potential for PTT and imaging.

Purpose of the Study:

• To develop a novel nanoplatform for fluorescence imaging-guided, combined gene therapy and PTT.
• To evaluate the synergistic therapeutic effect of the nanoplatform in cancer treatment.
• To demonstrate the potential for visual synergistic tumor treatment using this multi-modal nanosystem.

Main Methods:

• Synthesized tungsten oxide (WO) nanoparticles using a template method.
• Constructed a mesoporous silica nanoparticle-based nanoplatform loaded with Bax gene, WO, and indocyanine green (ICG).
• Evaluated the nanoplatform's efficacy in vitro and in vivo using near-infrared (NIR) laser excitation and fluorescence imaging.

Main Results:

• The developed nanoplatform successfully integrated gene therapy, PTT, and fluorescence imaging.
• In vivo experiments demonstrated significant solid tumor regression under 808nm NIR light irradiation.
• The nanoplatform exhibited synergistic therapeutic effects, combining gene therapy and PTT.

Conclusions:

• The novel nanoplatform shows potential as a fluorescence imaging-guided multi-modal therapeutic nanosystem.
• This approach enables visual synergistic treatment for tumors.
• The combination of gene therapy and PTT with imaging guidance represents a promising strategy in oncotherapy.