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Plasmonic gold nanoshell (GNS) probe penetrates into tumors for deep imaging, enables superior photoacoustic contrast. Glypican-3 (GPC3) specific peptide (Kd = 71 nM) conjugated gold nanoshell (λabs=770nm) was used to detect HCC xenograft tumors in mice with photoacoustic imaging. This targeting probe demonstrated tumor uptake after 1 hr and cleared in 12 hrs. Images at a mean (±SD) depth of 9.7±1.4 mm from 0 to 2.1 cm beneath the skin revealed increased PA signal from tumors. Highest tumor uptake and tumor to normal tissue ratio occurred at 2 hrs post injection (T/B = 4.45±0.22, n = 8). Molecular targeting GNS showed potential as a simple, effective and rapid technique for noninvasive in vivo monitoring HCC tumor growth and GPC3 expression.
Quan Zhou,Yan Chen,Zhao Li,Juan Zhou,Xiyu Duan, andThomas D. Wang
"Photoacoustic imaging of hepatocellular carcinoma targeting gold nanoshells (Conference Presentation)", Proc. SPIE 10079, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications IX, 1007907 (24 April 2017); https://doi.org/10.1117/12.2255917
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Quan Zhou, Yan Chen, Zhao Li, Juan Zhou, Xiyu Duan, Thomas D. Wang, "Photoacoustic imaging of hepatocellular carcinoma targeting gold nanoshells (Conference Presentation)," Proc. SPIE 10079, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications IX, 1007907 (24 April 2017); https://doi.org/10.1117/12.2255917