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Gao, Fang; Yang, Xue; Luo, Xinping; Xue, Xuling; Qian, Chenggen; Sun, Minjie
Advanced functional materials, December 1, 2020, Volume: 30, Issue: 49Journal Article
Non‐small cell lung cancer (NSCLC) is a primary threat to human health. Cisplatin is always in first‐line treatment of NSCLC; however, cisplatin resistance restricts the application in the clinic. Herein, an innovative 2D platinum delivery platform based on manganese dioxide nanosheet is presented to overcome cisplatin‐resistance and enhance theranostic efficacy in NSCLC. The photo‐induced hyperthermia of nanosheets can inhibit Pt drug efflux from the multidrug resistance‐associated protein (MRP1) repression. Then the intracellular l‐Glutathione (GSH) consumed by MnO2 nanosheets can reduce the generation of GSH‐Pt complex. Working along both lines accelerates access to the nucleus for cisplatin. Moreover, chemo‐photothermal synergistic therapy of Pt nanosheets significantly enhances therapeutic efficacy in vitro and in vivo. In addition, nanosheets can exert an on‐demand activable magnetic resonance imaging contrast effect to monitor Pt drug release. For the first time, a promising photoactivated 2D vector is provided to overcome cisplatin resistance in NSCLC therapy. A simple 2D manganese dioxide nanosheet is presented as a cisplatin prodrug‐delivery platform to overcome cisplatin‐resistance and to enhance diagnosis and therapy efficacy in non‐small cell lung cancer therapy. This biocompatible multifunctional 2D nanosheet is a promising vector to augment the sensitivity and treatment effect of platinum drugs in the clinic.
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