Enhancement of gold-nanocluster-mediated chemotherapeutic efficiency of cisplatin in lung cancer.

A novel delivery system for cisplatin was constructed based on electrostatics-mediated assemblies of gold nanoclusters and PEGylated cationic peptide (cisplatin@GC-pKs). Encapsulated cisplatin in the as-formed micelle like assemblies was observed to demonstrate improved cellar uptake and enhanced chemotherapeutic efficiency in the cisplatin-resistant lung cancer cells. In vivo assays further confirmed that cisplatin@GC-pKs had profound anti-tumor efficiency due to deep penetration and accumulation of nanoscale cisplatin@GC-pKs via the enhanced permeability and retention (EPR) effect at tumor tissues. The constructed cisplatin@GC-pKs in this work demonstrated enhanced anti-tumor activity for lung cancer therapy, as well as a potential treatment strategy for a variety of cisplatin-resistance related malignancies.

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