کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10227740 459 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prussian blue coated gold nanoparticles for simultaneous photoacoustic/CT bimodal imaging and photothermal ablation of cancer
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Prussian blue coated gold nanoparticles for simultaneous photoacoustic/CT bimodal imaging and photothermal ablation of cancer
چکیده انگلیسی
The combination of CT imaging and photoacoustic (PA) imaging represents not only high resolution and ease of forming 3D visual image for locating tissues of interest, but also good soft tissue contrast and excellent high sensitivity, which is very beneficial to the precise guidance for photothermal therapy (PTT). The near infrared (NIR) absorbing Au nanostructures take advantages to operate as a CT contrast agent due to high absorption coefficient of X-ray and outstanding biocompatibility, but show obvious deficiency for PA imaging and PTT because of low photostability. Attacking this problem head on, the Au nanoparticles (NPs) were coated with Prussian blue (PB) which is a typical FDA-approved drug in clinic for safe and effective treatment of radioactive exposure. The obtained core/shell NPs of Au@PB NPs of 17.8 ± 2.3 nm were found to be an excellent photoabsorbing agent for both PTT and PA imaging due to high photostability and high molar extinction coefficient in NIR region. Their gold core of 9.1 ± 0.64 nm ensured a remarkable contrast enhancement for CT imaging. Through a one-time treatment of NIR laser irradiation after intravenous injection of Au@PB NPs, 100 mm3 sized tumors in nude mice could be completely ablated without recurrence. Such versatile nanoparticles integrating effective cancer diagnosis with noninvasive therapy might bring opportunities to future cancer therapy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 35, Issue 22, July 2014, Pages 5814-5821
نویسندگان
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