Abstract
5-Fluorouracil (5-FU) is a conventional nucleotide analogue used for cancer treatment. However, its clinical application faces challenges such as low stability and non-specific toxicity. With the remarkable advancements in DNA nanotechnology, DNA-based self-assembled nanocarriers have emerged as powerful tools for delivering nucleotide drugs. In this study, we have designed a non-linear hybrid chain reaction involving a fuel strand with AS1411 aptamer sequence to construct a dendritic structure capable of carrying 5-FU. This structure specifically targets cancer cells with overexpressed nucleolin on their surface, allowing the 5-FU to exert its anticancer effects and achieve therapeutic outcomes. Furthermore, we have also investigated the mechanistic action of this drug delivery system, aiming to establish a novel therapeutic platform for 5-FU treatment.
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