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Constructing 177Lu-Labeled Lanthanide Nano-Radiopharmaceuticals for Efficient Postoperative Tumor Radionuclide Therapy and Prognosis Monitoring

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机构: [1]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. [2]School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China. [3]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350108, China. [4]Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China. [5]Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, Sichuan 610064, China.
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Cancer remains a global health challenge, with current postoperative adjuvant therapies for advanced solid tumors being limited by therapeutic resistance, off-target effects, and insufficient treatment monitoring. Here, we report a rational design of a novel tumor-targeted 177Lu-labeled lanthanide nanoradiopharmaceutical called 177Lu-LnNRP@HER2 (namely, NaGdF4:Yb@NaErF4:Tm@NaYF4:Yb/177Lu@NaYF4@DSPE-PEG-HER2). This nanoradiopharmaceutical is engineered to enable precision postoperative β-radiotherapy in combination with real-time radiation-free prognosis monitoring. The unique multilayer structure of 177Lu-LnNRP@HER2 simultaneously facilitates tumor-selective β-particle irradiation through stably labeled 177Lu for eliminating residual tumor cells and provides strong upconversion/near-infrared-II (UC/NIR-II) fluorescent signals for intraoperative tumor margin delineation and postoperative monitoring. In an orthotopic gastric tumor model, 177Lu-LnNRP@HER2 demonstrates significant postoperative therapeutic efficacy and real-time prognosis monitoring capability, achieving an 84% suppression of recurrence, an 88.6% reduction in metastasis, and a 2.6-fold increase in median survival. Multimodal analyses, including high-resolution cell imaging, flow cytometry, and transcriptomics, reveal that the excellent antitumor activity of 177Lu-LnNRP@HER2 is mainly attributed to the DNA damage and reactive oxygen species elevation arising from the proximity-targeted β-particle irradiation of tumor cell nuclei and mitochondria. These findings address a key gap in the field by synchronizing targeted radionuclide therapy with integrated real-time monitoring, thus promising a new paradigm for precision oncology.

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大类 | 1 区 化学
小类 | 1 区 化学:综合
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大类 | 1 区 化学
小类 | 1 区 化学:综合
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第一作者机构: [1]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. [2]School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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通讯机构: [1]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. [2]School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China. [3]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350108, China.
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