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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 4, Iss. 11 — Nov. 1, 2013
  • pp: 2284–2295

Feasibility study of brain tumor delineation using immunolabeled gold nanorods

Kevin Seekell, Spencer Lewis, Christy Wilson, Shuqin Li, Gerald Grant, and Adam Wax  »View Author Affiliations

Biomedical Optics Express, Vol. 4, Issue 11, pp. 2284-2295 (2013)

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Effective treatment of patients with malignant brain tumors requires surgical resection of a high percentage of the bulk tumor. Surgeons require a method that enables delineation of tumor margins, which are not visually distinct by eye. In this study, the feasibility of using gold nanorods (GNRs) for this purpose is evaluated. Anti-Epidermal Growth Factor Receptor (anti-EGFR) conjugated GNRs are used to label human xenograft glioblastoma multiforme (GBM) tumors embedded within slices of brain tissues from healthy nude mice. The anti-EGFR GNRs exhibit enhanced absorption at red to near-infrared wavelengths, often referred to as the tissue optical window, where absorption from blood is minimal. To enable definition of molecular specificity and spatial accuracy of the label, the GNR absorption is compared with GFP fluorescence which is expressed by the GBM cells used here. This work demonstrates a simple but highly translational technique to classify normal and malignant brain tissue regions in open surgery applications using immunolabeled GNR contrast agents.

© 2013 Optical Society of America

OCIS Codes
(170.6930) Medical optics and biotechnology : Tissue
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Nanotechnology and Plasmonics

Original Manuscript: June 17, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: September 24, 2013
Published: October 1, 2013

Virtual Issues
Optical Molecular Probes, Imaging, and Drug Delivery (2013) Biomedical Optics Express

Kevin Seekell, Spencer Lewis, Christy Wilson, Shuqin Li, Gerald Grant, and Adam Wax, "Feasibility study of brain tumor delineation using immunolabeled gold nanorods," Biomed. Opt. Express 4, 2284-2295 (2013)

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