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Related Experiment Video

Updated: Jul 3, 2026

Inducing Targeted Mild Hyperthermia in Murine Tumor Models through Photothermal Conversion of Near-infrared Light by Intratumoral Gold Nanorods
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Radiotherapy enhancement with gold nanoparticles.

James F Hainfeld1, F Avraham Dilmanian, Daniel N Slatkin

  • 1Nanoprobes, Inc., 95 Horseblock Road, Yaphank, NY 11980-9710, USA. hainfeld@nanoprobes.com

The Journal of Pharmacy and Pharmacology
|July 23, 2008
PubMed
Summary

Gold nanoparticles enhance radiotherapy by concentrating X-ray dose in tumors. This approach significantly increases cancer cure rates in preclinical models, showing promise for clinical application.

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Area of Science:

  • Medical physics
  • Nanotechnology
  • Oncology

Background:

  • Gold's high X-ray absorption properties can be leveraged in cancer therapy.
  • Loading tumors with gold could increase radiation dose to cancerous tissue relative to normal tissue.

Purpose of the Study:

  • To discuss physical and biological parameters influencing radiation dose enhancement by gold.
  • To review the therapeutic efficacy of gold nanoparticles in animal cancer models.
  • To explore the clinical potential of gold nanoparticle-enhanced radiotherapy.

Main Methods:

  • Theoretical calculations of dose enhancement.
  • Review of preclinical animal trials using gold nanoparticles and radiotherapy.

Main Results:

  • Dose enhancement from gold can be significant (200% or greater).
  • In EMT-6 mouse models, gold nanoparticles plus irradiation achieved 86% long-term tumor cures versus 20% with radiation alone.

Conclusions:

  • Gold nanoparticles offer a promising strategy for enhancing radiotherapy efficacy.
  • Further clinical investigation is warranted to translate these preclinical findings.