纳米探针
生物正交化学
体内
磁共振成像
材料科学
临床前影像学
点击化学
纳米颗粒
纳米技术
生物医学工程
医学
生物
放射科
生物技术
高分子化学
作者
Zichao Luo,Dehong Hu,Duyang Gao,Zhigao Yi,Hairong Zheng,Zonghai Sheng,Xiaogang Liu
标识
DOI:10.1002/adma.202102950
摘要
Lanthanide-based NIR-IIb nanoprobes are ideal for in vivo imaging. However, existing NIR-IIb nanoprobes often suffer from low tumor-targeting specificity, limiting their widespread use. Here the application of bioorthogonal nanoprobes with high tumor-targeting specificity for in vivo NIR-IIb luminescence imaging and magnetic resonance imaging (MRI) is reported. These dual-modality nanoprobes can enhance NIR-IIb emission by 20-fold and MRI signal by twofold, compared with non-bioorthogonal nanoprobes in murine subcutaneous tumors. Moreover, these bioorthogonal probes enable orthotopic brain tumor imaging. Implementation of bio-orthogonal chemistry significantly reduces the nanoprobe dose and hence cytotoxicity, providing a paradigm for real-time in vivo visualization of tumors.
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