Abstract
In this paper, we proposed the use of gold nanoparticles as plasmon scattering probes for dark-field multiplex imaging of live cancer cells. By carefully engineering the surfaces, aqueous dispersions of anti-EGFR antibody-conjugated gold nanospheres and gold nanorods are prepared. We demonstrated the receptor-mediated delivery of antibody conjugated gold nanospheres and gold nanorods into EGFR receptor-positive oral squamous cell carcinoma cell line by using darkfield microscopy technique. Our result suggests that gold nanospheres and gold nanorods formulations could provide up to 7 types of plasmon scattering probes based on their tunability range with a 100 nm spectral separation in absorption bands.
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