Dual Imaging-Guided Oxidative-Photothermal Combination Anticancer Therapeutics
Joungyoun Noh, Eunkyeong Jung, Donghyuck Yoo
1Korea Institute of Radiological & Medical Sciences , Nowonro 75, Nowon-gu, Seoul 01812 , Republic of Korea.
ACS Applied Materials & Interfaces
|November 15, 2018
Summary
Inhibiting heme oxygenase-1 (HO-1) with novel nanotherapeutics enhances cancer cell sensitivity to photothermal therapy. This dual-action approach effectively eliminates tumors with minimal side effects, showing promise for cancer treatment.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Cancer Therapy
Background:
- Heme oxygenase-1 (HO-1) is a stress-response protein that protects cancer cells from therapy by increasing antioxidant levels.
- HO-1 expression is upregulated by chemotherapy and radiotherapy, acting as a shield against cancer treatments.
- Inhibiting HO-1 may sensitize cancer cells to therapies like photothermal heating by reducing their antioxidant defenses.
Purpose of the Study:
- To develop dual imaging-guided oxidative-photothermal combination nanotherapeutics (OPCN) for enhanced cancer treatment.
- To investigate the efficacy of OPCN in combination with near-infrared (NIR) laser irradiation.
- To evaluate the potential of OPCN for dual-modal imaging and targeted tumor ablation.
Main Methods:
- Developed amphiphilic polymer-based nanotherapeutics (OPCN) incorporating zinc protoporphyrin (HO-1 inhibitor) and IR820 (photothermal agent).
- Utilized dual imaging (fluorescence and photoacoustic) for tumor identification and monitoring.
- Administered OPCN and applied NIR laser irradiation to a mouse xenograft model.
Main Results:
- OPCN combined with NIR laser irradiation significantly increased tumor temperature and induced apoptosis.
- Tumors were clearly visualized using fluorescence and photoacoustic imaging.
- Complete tumor ablation was achieved with OPCN and NIR irradiation, with no observed side effects or recurrence.
Conclusions:
- OPCN nanotherapeutics effectively inhibit HO-1 and provide photothermal ablation of tumors.
- Dual imaging guidance ensures accurate targeting and monitoring of the therapeutic effect.
- OPCN represent a promising strategy for dual imaging-guided oxidative-photothermal combination anticancer therapy with significant translational potential.
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