Abstract
Following surgical removal of malignant tumors, chemotherapeutic intervention usually is subsequently applied in patients with advanced stages of cancer. Most chemotherapeutic drugs are intravenously injected into patients, leading to systemic cytotoxicity in organs and tissues, including healthy tissue and tumors. Currently, it has been demonstrated that gold nanoparticles can easily penetrate blood vessels and tissue barriers into tumor foci, which indicates gold nanoparticles as a more effective drug carrier with great merits in reducing cytotoxicity and economic burden in patients. Moreover, gold nanoparticles display several unique characterizations with multiple functions in therapeutics, imaging, and surface modification, suggesting gold nanoparticles may become effective antitumor drug carriers. In this review article, we discuss the limitations and applications of gold nanoparticles in surface modification, targeting strategy, and safety considerations.
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