期刊
BIOMATERIALS SCIENCE
卷 9, 期 8, 页码 3069-3075出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1bm00088h
关键词
-
The newly developed radiolabeled NIR-II nanoplatform I-125-MT NP shows promising results for versatile SPECT and NIR-II fluorescence imaging against breast cancer, demonstrating high labeling efficiency, good biocompatibility, and clear tumor visualization in both in vitro and in vivo studies.
Efficacious cancer treatment largely relies on accurate imaging diagnosis and imaging-guided surgery, which can be achieved by combining different mode imaging probes on one single nanoplatform. Herein, a novel radiolabeled NIR-II nanoprobe (I-125-MT NP) was developed to enable versatile single-photon emission computed tomography (SPECT) and second near-infrared (NIR-II) fluorescence dual-modal imaging against breast cancer. I-125-MT was precipitated with an amphiphilic triblock copolymer (PEO-PPO-PEO) to form I-125-MT NPs. The I-125-MT NPs exhibited high labeling efficiency (98 +/- 2%) with a hydrodynamic diameter of 91.3 +/- 5.5 nm. In vitro and in vivo studies demonstrated that I-125-MT NPs emitted intensive NIR-II fluorescence and SPECT signals, and possessed good biocompatibility. By using a breast tumor xenograft mouse model after intravenous injection of I-125-MT NPs, the SPECT imaging and NIR-II imaging showed clear images of tumor tissues at 8 h and 48 h postinjection, respectively, suggesting the feasibility of using I-125-MT NPs to detect tumors before surgery and visualize the dissection area during surgery. In addition, the SPECT scan of a lymph node mapping was performed at 1 h postinjection and NIR-II fluorescence imaging was carried out at 4 h postinjection. This further guarantees the accurate imaging of lymph nodes before and during surgery for lymphadenectomy. Overall I-125-MT NP is a promising, practical imaging probe for sequential imaging and precision cancer therapy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据