Fabrication of PEGylated Fe@Bi2S3 nanocomposites for dual-mode imaging and synergistic thermoradiotherapy

被引:34
作者
Li, Erdong [1 ,2 ]
Cheng, Xiaju [3 ]
Deng, Yaoyao [1 ,2 ]
Zhu, Jing [1 ,2 ]
Xu, Xiaoding [4 ]
Saw, Phei Er [4 ]
Gu, Hongwei [1 ,2 ]
Ge, Cuicui [3 ]
Pan, Yue [1 ,2 ,4 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, State & Local Joint Engn Lab Novel Funct Polymer, Suzhou 215123, Peoples R China
[2] Soochow Univ, Sch Radiol & Interdisciplinary Sci RAD X, State Key Lab Radiat Med & Protect, Suzhou 215123, Peoples R China
[3] Soochow Univ, Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou 215123, Peoples R China
[4] Sun Yat Sen Univ, Sun Yat Sen Mem Hosp, Guangdong Prov Key Lab Malignant Tumor Epigenet &, Guangzhou 510120, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
PHOTOTHERMAL THERAPY; IN-VIVO; CANCER-THERAPY; DRUG-DELIVERY; BREAST-CANCER; MAGNETIC HYPERTHERMIA; NANOPARTICLES; CELLS; EFFICIENCY; PLATFORM;
D O I
10.1039/c8bm00336j
中图分类号
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号
0805 ; 080501 ; 080502 ;
摘要
Nanocomposites for integrating imaging and therapy have attracted tremendous attention for biomedical applications. Herein, Fe@Bi2S3 nanocomposites modified with polyethylene glycol (PEG) molecules are fabricated for synergistic thermoradiotherapy. For such nanocomposites, Bi2S3 exhibits a strong absorbance in the near-infrared (NIR) region, which allows Bi2S3 to convert energy from light into heat for effective photothermal therapy (PTT), whereas Bi can also significantly enhance radio-mediated cell death induction as a radiotherapy sensitizer due to its high atomic number (high-Z). Most importantly, it is found that the combination of PTT and radiation therapy (RT), using PEGylated Fe@Bi2S3 nanocomposites, can bring a strong synergistic effect for the tumor treatment in in vitro and in vivo experiments. Besides, the magnetic Fe core and the Bi2S3 shell components endow this nanocomposite with an ability to serve as both a magnetic resonance imaging (MRI) and computed tomography (CT) contrast agent. Therefore, our work presents a new type of multifunctional nanocomposite with the potential for synergistic thermoradiotherapy and simultaneously MRI/CT imaging.
引用
收藏
页码:1892 / 1898
页数:7
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