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Hyperthermic Cytotoxicity Induced by Noninvasive Radiofrequency Field Exposure After Delivery of EGFR Family Targeted Gold Nanoparticles

[+] Author Affiliations
Evan S. Glazer, Warna D. Kaluarachchi, Steven A. Curley

University of Texas M. D. Anderson Cancer Center, Houston, TX

Paper No. NEMB2010-13172, pp. 97-98; 2 pages
  • ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology
  • ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology
  • Houston, Texas, USA, February 7–10, 2010
  • Conference Sponsors: ASME Nanotechnology Council
  • ISBN: 978-0-7918-4392-5 | eISBN: 978-0-7918-3866-2
  • Copyright © 2010 by ASME


Noninvasive radiofrequency (RF) fields heat metal nanoparticles in a concentration dependent fashion. Gold nanoparticles are especially interesting for biomedical applications because they not only heat well, but they have an established biosafety profile. Antibody-targeted gold nanoparticles have been used to induce hyperthermic cytotoxicity when exposed to RF fields. Two carcinoma cells lines, Panc-1 and Hep3B, were individually treated with 100 nM panitumumab and trastuzumab antibody conjugated 10 nm gold nanoparticles and subsequently exposed to an RF field for a total generator power of ∼100 kJ. Two days later, control cells treated with antibody labeled gold nanoparticles, but not exposed to the RF field, maintained an average viability of 92.1% ± 2.5% for Hep 3B cells and 89.1% ± 2.1% for Panc-1 cells based on flow cytometry. Panc-1 cells treated the same way with subsequent RF field exposure had viability less than 80% (p ∼ 0.001). Hep3B cells showed a similar decrease in viability after trastuzumab-gold treatment (74.5% ± 6.9%), but not panitumumab. This demonstrates a new and developing use of antibodies, specifically, against EGFR family targets.

Copyright © 2010 by ASME
Topics: Nanoparticles



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