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Ruthenium-Based Metal-Organic Nanoradiosensitizers Enhance Radiotherapy by Combining ROS Generation and CO Gas
Qixuan Dai1, Lin Wang1, En Ren1
1State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China.
Angewandte Chemie (International Ed. in English)
|October 2, 2022
Summary
This study introduces novel ruthenium-based nanostructures (ZrRuMn-MONs@mem) that enhance X-ray-induced dynamic therapy (XDT) by boosting reactive oxygen species (ROS) and CO release for improved tumor targeting and radiosensitivity.
Area of Science:
- Nanomedicine
- Radiotherapy
- Materials Science
Background:
- Clinical radiotherapy faces limitations due to poor targeting accuracy and radiosensitivity.
- Optimizing radiation delivery and tumor cell response is crucial for effective cancer treatment.
Purpose of the Study:
- To develop an advanced radiosensitizer for X-ray-induced dynamic therapy (XDT).
- To enhance reactive oxygen species (ROS) generation and CO release for improved therapeutic outcomes.
- To achieve active tumor targeting and enhance biocompatibility.
Main Methods:
- Synthesis of Ru-based metal-organic nanostructures (ZrRuMn-MONs).
- Incorporation of a cell membrane coating with an antiglypican 3 (GPC3) antibody (hGC33) for active targeting.
- Evaluation of enhanced radiation dose absorption and secondary electron-induced reactions within the nanostructures.
Main Results:
- ZrRuMn-MONs@mem demonstrated increased direct radiation absorption and secondary radiation deposition.
- The nanostructures facilitated secondary electron trapping and transfer, initiating reactions that boosted therapeutic efficiency.
- The hGC33-coated nanostructures enabled active targeting of tumor sites with improved biocompatibility.
Conclusions:
- ZrRuMn-MONs@mem effectively enhances XDT by maximizing ROS and CO generation.
- The developed nanoradiosensitizer shows significant potential for overcoming current radiotherapy limitations.
- This represents a promising advancement in developing targeted and efficient radiosensitizers for clinical XDT.
