期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 37, 页码 33650-33658出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b10479
关键词
rhenium sulfide; biosafety; spectral CT imaging; gastrointestinal tract; tumor theranostics
资金
- National Natural Science Foundation of China [81671676, 21435001]
- Natural Science Foundation of Tianjin City [18JCYBJC20800]
Spectral computed tomography (CT) imaging as a novel imaging technique shows promising prospects in the accurate diagnosis of various diseases. However, clinically iodinated contrast agents suffer from poor signal-to-noise ratio, and emerging heavy-metal-based CT contrast agents arouse great biosafety concern. Herein, we show the fabrication of rhenium sulfide (ReS2) nanoparticles, a clinic radiotherapy sensitizer, as a biosafe spectral CT contrast agent for the gastrointestinal tract imaging and tumor theranostics in vivo by teaching old drugs new tricks. The ReS2 nanoparticles were fabricated in a one-pot facile method at room temperature, and exhibited sub-10 nm size, favorable monodispersity, admirable aqueous solubility, and strong X-ray attenuation capability. More importantly, the proposed nanoparticles possess an outstanding spectral CT imaging ability and undoubted biosafety as a clinic therapeutic agent. Besides, the ReS2 nanoparticles possess appealing photothermal performance due to their intense near-infrared absorption. The proposed nano- agent not only guarantees obvious contrast enhancement in gastrointestinal tract spectral CT imaging in vivo, but also allows effective CT imaging-guided tumor photothermal therapy. The proposed teaching old drugs new tricks strategy shortens the time and cuts the cost required for clinical application of nano-agents based on existing clinical toxicology testing and trial results, and lays down a low-cost, time-saving, and energy-saving method for the development of multifunctional nano-agents toward clinical applications.
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