IR780-based light-responsive nanocomplexes combining phase transition for enhancing multimodal imaging-guided
Mingzhu Liu1, Ping Zhang, Liming Deng
1Chongqing Key Laboratory of Ultrasound Molecular Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China. 303507@hospital.cqmu.edu.cn.
Biomaterials Science
|January 17, 2019
Summary
This study introduces a novel nanocomplex for enhanced cancer treatment. It combines near-infrared light therapy with advanced imaging, improving tumor destruction and reducing recurrence risk.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Cancer Therapy
Background:
- Near-infrared (NIR) light-triggered photothermal therapy (PTT) is a promising cancer treatment.
- PTT alone often leads to incomplete tumor ablation and recurrence.
- Current enhancement strategies for PTT may involve side effects.
Purpose of the Study:
- To develop a novel nanocomplex for enhanced multimodal imaging-guided photothermal therapy.
- To improve tumor cell destruction and reduce side effects compared to traditional PTT.
Main Methods:
- Synthesized an IR780-based nanocomplex incorporating liquid fluorocarbon perfluoropentane (PFP).
- Utilized phase transition of PFP-loaded nanobubbles to microbubbles for ultrasound (US) imaging.
- Employed IR780 for photoacoustic (PA) and NIR fluorescence (NIRF) imaging.
- Evaluated the nanocomplex for biocompatibility, toxicity, imaging contrast, and photothermal effect.
Main Results:
- The nanocomplex demonstrated effective phase transition for US imaging, revealing tumor details.
- Enhanced intratumoral permeation and retention of nanoparticles were observed.
- The nanocomplex facilitated effective tumor cell membrane damage and enhanced PTT efficacy.
- Strong PA/US/NIRF imaging contrast and a significant photothermal effect were achieved.
- The synthesized nanocomplex showed good biocompatibility and nontoxicity.
Conclusions:
- The developed IR780/PFP nanocomplex offers a promising strategy for multimodal imaging-guided cancer nanotheranostics.
- This approach enhances PTT efficacy by improving imaging, nanoparticle delivery, and direct tumor cell damage.
- The nanocomplex presents a viable alternative for cancer treatment with reduced side effects.
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