화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.67, 429-436, November, 2018
Cancer-targeted photothermal therapy using aptamer-conjugated gold nanoparticles
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Targeted intracellular delivery of therapeutic agents is one of the great challenges for cancer treatment. Aptamers that bind to a variety of biological targets have emerged as new targeting moieties with high specificity for targeted cancer therapy. In this study, near-infrared (NIR) light-absorbing hollow gold nanocages (AuNCs) were synthesized and conjugated with AS1411 aptamer to achieve cancer-targeted photothermal therapy. AuNC functionalized with PEG and AS1411 (AS1411-PEG-AuNC) exhibited selective cellular uptake in breast cancer cells due to selective binding of AS1411 to nucleolin, a protein that is over-expressed in cancer cells over normal cells. As a result, AS1411-PEG-AuNC showed cancer- targeted photothermal activity. This study demonstrates that aptamer-conjugated AuNCs are effective tumor-targeting photothermal agents.
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