Immunotargeted Nanoshells for Integrated Cancer Imaging and Therapy

TitleImmunotargeted Nanoshells for Integrated Cancer Imaging and Therapy
Publication TypeJournal Article
Year of Publication2005
AuthorsLoo, C, Lowery, A, Halas, N, West, JL, Drezek, RA
JournalNano Letters
Volume5
Issue4
Pagination709 - 711
Date Published04/2005
ISSN1530-6992
KeywordsHER2; imagin; immunotargeting; nanoshells; photothermal therapy
Abstract

Nanoshells are a novel class of optically tunable nanoparticles that consist of a dielectric core surrounded by a thin gold shell. Based on the relative dimensions of the shell thickness and core radius, nanoshells may be designed to scatter and/or absorb light over a broad spectral range including the near-infrared (NIR), a wavelength region that provides maximal penetration of light through tissue. The ability to control both wavelength-dependent scattering and absorption of nanoshells offers the opportunity to design nanoshells which provide, in a single nanoparticle, both diagnostic and therapeutic capabilities. Here, we demonstrate a novel nanoshell-based all-optical platform technology for integrating cancer imaging and therapy applications. Immunotargeted nanoshells are engineered to both scatter light in the NIR enabling optical molecular cancer imaging and to absorb light, allowing selective destruction of targeted carcinoma cells through photothermal therapy. In a proof of principle experiment, dual imaging/therapy immunotargeted nanoshells are used to detect and destroy breast carcinoma cells that overexpress HER2, a clinically relevant cancer biomarker.

DOI10.1021/nl050127s
Short TitleNano Lett
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