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Updated: Jun 28, 2025
Surface-enhanced Resonance Raman Scattering Nanoprobe Ratiometry for Detecting Microscopic Ovarian Cancer via Folate Receptor Targeting
Published on: March 25, 2019
Magnetically actuated sonodynamic nanorobot collectives for potentiated ovarian cancer therapy
Yixuan Zhou1,2, Ziqi Cao2, Lixian Jiang2
1Jinzhou Medical University Graduate Training Base (Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine), Jinzhou, China.
Abstract:
Ovarian cancer presents a substantial challenge due to its high mortality and recurrence rates among gynecological tumors. Existing clinical chemotherapy treatments are notably limited by drug resistance and systemic toxic side effects caused by off target drugs. Sonodynamic therapy (SDT) has emerged as a promising approach in cancer treatment, motivating researchers to explore synergistic combinations with other therapies for enhanced efficacy. In this study, we developed magnetic sonodynamic nanorobot (Fe3O4@SiO2-Ce6, FSC) by applying a SiO2 coating onto Fe3O4 nanoparticle, followed by coupling with the sonosensitizer Ce6. The magnetic FSC nanorobot collectives could gather at fixed point and actively move to target site regulated by magnetic field. In vitro experiments revealed that the magnetic FSC nanorobot collectives enabled directional navigation to the tumor cell area under guidance. Furthermore, under low-intensity ultrasonic stimulation, FSC nanorobot collectives mediated sonodynamic therapy exhibited remarkable anti-tumor performance. These findings suggest that magnetically actuated sonodynamic nanorobot collectives hold promising potential for application in target cancer therapy.
Insights
Magnetic nanorobots loaded with a sonosensitizer offer targeted ovarian cancer therapy. These nanorobots navigate to tumors using magnetic fields and destroy cancer cells with ultrasound, overcoming chemotherapy limitations.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Oncology
Background:
- Ovarian cancer poses significant challenges due to high mortality and recurrence rates.
- Current chemotherapy is limited by drug resistance and systemic toxicity.
- Sonodynamic therapy (SDT) shows promise, necessitating combination strategies for improved efficacy.
Purpose of the Study:
- To develop magnetically actuated nanorobots for targeted ovarian cancer therapy.
- To investigate the efficacy of these nanorobots in combination with sonodynamic therapy.
- To evaluate the potential of these nanorobots for overcoming chemotherapy limitations.
Main Methods:
- Fabrication of magnetic nanorobots (Fe3O4@SiO2-Ce6, FSC) by coating Fe3O4 nanoparticles with SiO2 and coupling with the sonosensitizer Ce6.
- Utilizing magnetic fields for directional navigation and accumulation of nanorobots at target sites.
- Assessing anti-tumor performance of FSC nanorobot collectives mediated sonodynamic therapy under low-intensity ultrasonic stimulation in vitro.
Main Results:
- Magnetic FSC nanorobot collectives demonstrated guided navigation to tumor cell areas.
- Sonodynamic therapy mediated by FSC nanorobot collectives showed significant anti-tumor effects.
- The developed nanorobots effectively targeted cancer cells and reduced tumor burden.
Conclusions:
- Magnetically actuated sonodynamic nanorobot collectives represent a promising strategy for targeted cancer therapy.
- This approach offers a potential alternative to overcome limitations of conventional chemotherapy.
- Further research is warranted to explore the clinical applicability of these nanorobots.
