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Updated: Feb 3, 2026
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Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
Published on: December 1, 2016
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Visualizing Photodynamic Therapy in Transgenic Zebrafish Using Organic Nanoparticles with Aggregation-Induced
Purnima Naresh Manghnani1, Wenbo Wu1, Shidang Xu1
1Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Nano-Micro Letters
|November 6, 2018
Summary
This study introduces fluorescent photosensitizer nanoparticles (PS NPs) for real-time visualization of tumor accumulation. This enables precise timing of photodynamic therapy (PDT) for enhanced cancer treatment effectiveness.
Area of Science:
- Biomedical Engineering
- Nanomedicine
- Cancer Therapy
Background:
- Photodynamic therapy (PDT) relies on photosensitizer (PS) accumulation in tumors and optimal light delivery for efficacy.
- Theranostic nanomedicine integrates diagnosis and therapy, requiring precise monitoring of drug delivery.
- Current PDT optimization faces challenges in real-time assessment of PS accumulation and light administration timing.
Purpose of the Study:
- To develop and utilize fluorescent photosensitizer nanoparticles (PS NPs) for real-time visualization of their accumulation in tumor tissues.
- To establish an optimal time window for conducting photodynamic therapy (PDT) based on real-time NP distribution.
- To demonstrate the utility of zebrafish larvae as a transparent in vivo model for monitoring theranostic nanomedicine bio-distribution and therapeutic efficiency.
Main Methods:
- Synthesis of fluorescent PS NPs with aggregation-induced emission characteristics.
- Utilizing transgenic zebrafish larvae with inducible liver hyperplasia as a model for tumor development.
- Real-time fluorescence imaging to monitor the bio-distribution and accumulation of PS NPs in tumor tissue.
- Correlation of NP accumulation with therapeutic outcomes of PDT.
Main Results:
- Demonstrated real-time visualization of polymeric NP accumulation in tumor tissue using fluorescent PS NPs.
- Identified the optimal time for PDT administration based on observed NP accumulation patterns.
- Successfully employed zebrafish larvae for in vivo monitoring of NP bio-distribution and PDT efficacy.
Conclusions:
- Fluorescent PS NPs allow for unprecedented real-time monitoring of nanoparticle accumulation in tumors.
- Zebrafish larvae serve as an effective transparent model for evaluating theranostic nanomedicine delivery and timing PDT.
- This approach optimizes PDT by ensuring precise light administration based on real-time imaging, potentially improving cancer treatment outcomes.
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