光热治疗
材料科学
生物医学中的光声成像
纳米棒
聚乙二醇
超声
体内
纳米颗粒
生物医学工程
医学
纳米技术
化学工程
光学
物理
工程类
生物技术
生物
作者
Caina Xu,Yanbing Wang,Erlei Wang,Nan Yan,Shengqiang Shu,Jie Chen,Lin Lin,Zhaopie Guo,Huayu Tian,Xuesi Chen
标识
DOI:10.1002/adfm.202009314
摘要
Abstract Exploiting a comprehensive strategy that processes diagnosis and therapeutic functions is desired for eradicating tumors. In this study, two versatile nanoparticles are introduced: one is polyethylene glycol‐ and polyethyleneimine‐modified gold nanorods (mPEG–PEI–AuNRs), and the other is formed by electrostatic interactions between mPEG–PEI and calcium carbonate nanoparticles (mPEG–PEI/CaNPs). These two nanoparticles possess following favorable properties: 1) mPEG–PEI–AuNRs and mPEG–PEI/CaNPs show not only high cell uptake in acidic tumoral pH, but also efficient accumulation in tumors with prolonged circulation. 2) mPEG–PEI/CaNPs can generate carbon dioxide (CO 2 ) bubbles in acidic tumoral environment and the photoacoustic (PA) signals from mPEG–PEI–AuNRs can be enhanced with the generation of CO 2 bubbles. 3) The tumors can be eradicated by combining photothermal therapy (PTT) with ultrasonic therapy (UST) under the near‐infrared (NIR) laser and ultrasonic irradiation with the presence of mPEG–PEI–AuNRs and CO 2 bubbles from mPEG–PEI/CaNPs. The detailed evaluation of cellular uptake, photothermal property of mPEG–PEI–AuNRs, CO 2 bubbles’ generation from mPEG–PEI/CaNPs, imaging, and combined PTT and UST are carried out in vitro or in vivo. This work has great potential usage for diagnosis and treatment in the future.
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