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Updated: May 16, 2025
Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
Published on: December 1, 2016
Redefining cancer photodynamic therapy with gold nanoparticles
Zoey A Lockwood1, Michael R Jirousek1, James P Basilion2
1Department of Chemistry, College of Arts and Sciences, Case Western Reserve University, Cleveland, Ohio, USA.
Abstract:
Despite advancements made in treatment options, cancer continues to be one of the leading causes of death worldwide. Photodynamic therapy (PDT) has gained attention as a minimally invasive and highly selective treatment option for cancer. However, challenges due to the hydrophobicity of photosensitizers and their poor tumor selectivity have limited their use in cancer therapy. Recent developments in nanotechnology, particularly the use of gold nanoparticles (AuNPs), help overcome these challenges. AuNPs provide a stable and biocompatible platform to deliver photosensitizers, improving their solubility, stability, and ability to target tumors while reducing side effects. Functionalized AuNPs take advantage of mechanisms like the enhanced permeability and retention (EPR) effect and active targeting, improving reactive oxygen species (ROS) production and overall therapeutic efficacy. This review explores innovations in AuNP-based PDT systems, including ligand-functionalized nanoparticles, bioresponsive coatings, and theranostic approaches that combine imaging with therapy. By delving into important aspects of synthesis, characterization, and functionalization, we show how AuNPs improve the delivery and performance of photosensitizers. For instance, systems functionalized with prostate-specific membrane antigen (PSMA) have shown increased therapeutic precision and efficacy in vivo. These advancements are paving the way for more targeted and safer cancer treatments, establishing AuNP-based PDT as a promising approach for developing highly effective oncological therapies with greater precision and fewer side effects.
Insights
Gold nanoparticles enhance photodynamic therapy (PDT) for cancer by improving photosensitizer delivery and tumor targeting. This nanotechnology approach offers a more precise and safer treatment option with reduced side effects.
Area of Science:
- Nanotechnology
- Biomedical Engineering
- Oncology
Background:
- Cancer remains a leading global cause of death despite treatment advancements.
- Photodynamic therapy (PDT) is a promising cancer treatment but faces challenges with photosensitizer hydrophobicity and tumor selectivity.
- Gold nanoparticles (AuNPs) offer a biocompatible platform to overcome these limitations.
Purpose of the Study:
- To review innovations in gold nanoparticle-based photodynamic therapy (AuNP-PDT) systems for cancer treatment.
- To explore how AuNPs improve photosensitizer delivery, solubility, stability, and tumor targeting.
- To highlight advancements in AuNP-PDT, including functionalization strategies and theranostic applications.
Main Methods:
- Review of current literature on AuNP synthesis, characterization, and functionalization for PDT.
- Exploration of targeting mechanisms such as the enhanced permeability and retention (EPR) effect and active targeting.
- Discussion of ligand-functionalized nanoparticles, bioresponsive coatings, and theranostic approaches.
Main Results:
- Functionalized AuNPs improve photosensitizer delivery, enhance tumor selectivity, and increase reactive oxygen species (ROS) production.
- AuNP-based PDT systems demonstrate improved therapeutic efficacy and reduced side effects compared to conventional PDT.
- Specific examples, such as PSMA-functionalized AuNPs, show enhanced precision and efficacy in vivo.
Conclusions:
- AuNPs provide a versatile platform for developing advanced PDT systems, overcoming key limitations of traditional photosensitizers.
- AuNP-based PDT offers a promising strategy for highly targeted and safer cancer therapies.
- Continued research in AuNP functionalization and theranostics will further enhance oncological treatment precision and effectiveness.
