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One-step reduction-encapsulated synthesis of Ag@polydopamine multicore-shell nanosystem for enhanced photoacoustic imaging and photothermal-chemodynamic cancer therapy
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作者 Xiao-Rui Li Baoli Yin +4 位作者 Lei Gao Xinhao Li Hongwen Huang Guosheng Song Yi-Ge Zhou 《Nano Research》 SCIE EI CSCD 2022年第9期8291-8303,共13页
Though imaging-guided multimodal therapy has been demonstrated as an effective strategy to improve cancer diagnosis and therapy,challenge remains as to simplify the sophisticated synthesis procedure for the correspond... Though imaging-guided multimodal therapy has been demonstrated as an effective strategy to improve cancer diagnosis and therapy,challenge remains as to simplify the sophisticated synthesis procedure for the corresponding nanoagents.Herein,an insitu one-step reduction-encapsulated method has been reported,for the first time,to synthesize multicore-shell polydopaminecoated Ag nanoparticles(AgNPs@PDA)as a cancer theranostic agent,integrating amplified photoacoustic imaging,enhanced photothermal therapy,and photothermal promoted dual tumor microenvironment-coactivated chemodynamic therapy.The photoacoustic signal and the photothermal conversion efficiency of AgNPs@PDA nanosystem present a 6.6-and 4.2-fold enhancement compared to those of M-AgNPs-PDA(simply mixing PDA and AgNPs)derived from the increased interface heat transfer coefficient and the stronger near-infrared absorption.Importantly,AgNPs@PDA coactivated by dual tumor microenvironment(TME)enables controllable long-term release of hydroxyl radicals(·OH)and toxic Ag+,which can be further promoted by near-infrared light irradiation.Moreover,the high efficiency of AgNPs@PDA nanosystem with prominent photoacoustic imaging-guided synergistic photothermal-chemodynamic cancer treatment is also found in in vitro and in vivo studies.As a special mention,the formation mechanism of the one-step synthesized multicore-shell nanomaterials is systematically investigated.This work provides a much simplified one-step synthesis method for the construction of a versatile nanoplatform for cancer theranostics with high efficacy. 展开更多
关键词 one-step synthesis multicore-shell nanosystem photoacoustic imaging enhanced photothermal therapy dual tumor microenvironment-coactivated chemodynamic therapy
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