Metabolizable lanthanum-coordination nanoparticles as efficient radiosensitizers for solid tumor therapy

Area of Science:

• Materials Science
• Nanotechnology
• Radiotherapy

Background:

• Tumor radioresistance limits radiotherapy efficacy.
• Heavy metal-based radiosensitizers enhance radiation dose.
• Need for novel, biocompatible radiosensitizing agents.

Purpose of the Study:

• Design and prepare novel lanthanum-coordination nanoparticles.
• Evaluate their efficacy as nano-sized radiosensitizers for solid tumors.
• Assess their biocompatibility and safety for clinical application.

Main Methods:

• One-pot hydrothermal synthesis of lanthanum-coordination nanoparticles.
• Incorporation of polyvinylpyrrolidone for enhanced dispersity and biocompatibility.
• In vitro and in vivo studies to assess radiosensitization, toxicity, and biodistribution.

Main Results:

• Lanthanum nanoparticles synthesized efficiently without expensive reagents.
• Demonstrated low cytotoxicity, negligible hemolysis, and no effect on blood coagulation.
• Exhibited significant radiosensitization effects, inducing substantial cell death in vitro and in vivo.
• Showed high biocompatibility, favorable biodistribution, and eventual clearance after intravenous administration.

Conclusions:

• Lanthanum-coordination nanoparticles are effective nano-sized radiosensitizers.
• These nanoparticles offer high biocompatibility and are metabolizable and cleared over time.
• Promising potential for X-ray radiation-mediated cancer therapy.