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18 February 2009 Two-photon-induced photoluminescence imaging of gold nanoshell's tumor biodistribution
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Given their tunable optical properties and high optical absorption and scattering cross sections, gold nanoshells (GNS) have been explored for a number of in vitro and in vivo imaging contrast and cancer therapy agents. While it has been shown that GNSs preferentially accumulate at the tumor site, little is known about the accumulation kinetics within the tumor. We demonstrate accumulation kinetics of GNSs in bulk tumors and histology slides using two-photon induced photoluminescence (TPIP) imaging. We found that GNSs had a heterogeneous distribution with higher accumulation at the tumor cortex. In addition, GNSs were observed in unique patterns surrounding the perivascular region. These results demonstrate that direct luminescence based imaging of metal nanoparticles provides high resolution and molecular specific multiplexed images.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jaesook Park, Arnold Estrada, Jon A. Schwartz, Parmeswaran Diagaradjane, Sunil Krishnan, Chris Coleman, J. Donald Payne, Andrew K. Dunn, and James W. Tunnell "Two-photon-induced photoluminescence imaging of gold nanoshell's tumor biodistribution", Proc. SPIE 7192, Plasmonics in Biology and Medicine VI, 71920T (18 February 2009);

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