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Updated: Jan 28, 2026

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基于白蛋白的NIR-II光/MRI双模成像探针用于精确诊断淋巴结瘤转移
Siyi Tao1, Xin Liu2, Yaoping Yu3
1Institute for Advanced Research, Cixi Biomedical Research Institute, Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life sciences, Wenzhou Medical University, Zhejiang, 325000, P. R. China. shenzhifa@wmu.edu.cn.
研究人员开发了一种使用牛血清白蛋白 (BSA) 的新型双模成像探针,用于增强近红外II (NIR-II) 光和磁共振成像 (MRI). 这种探针精确诊断瘤和转移性淋巴结,帮助手术导航.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 医疗成像医学成像
背景情况:
- 瘤转移是癌症死亡的主要原因,需要先进的诊断工具.
- 目前的成像技术往往缺乏检测转移性淋巴结的特异性和灵敏性.
- 开发用于多式成像的综合探头对于精确的癌症诊断至关重要.
研究的目的:
- 构建一种基于白蛋白的新型双模成像探头,集成近红外II (NIR-II) 光和磁共振成像 (MRI) 功能.
- 为了提高瘤和转移性淋巴结的诊断准确度.
- 为手术前瘤评估和手术内外科导航提供一个多功能工具.
主要方法:
- 将NIR-II光染料 (IR820) 和MRI对比剂 (GdL) 合理整合到牛血清白蛋白 (BSA) 中.
- 通过简单的组件混合来准备双模成像探头 (BSA-IR820-GdL).
- 探测器在NIR-II窗口中增强的光辐射和改善的GdL放松性的特征.
主要成果:
- 成功建造了具有集成NIR-II光和MRI特性的BSA-IR820-GdL双模成像探头.
- 证明了IR820光辐射扩展到NIR-II窗口.
- 在使用NIR-II光和MRI的小鼠模型中实现了瘤和转移性淋巴结的双模成像.
结论:
- 开发的基于白蛋白的双模成像探针为精确的瘤和转移性淋巴结诊断提供了宝贵的工具.
- 该探头通过结合NIR-II光和MRI来增强成像能力,改善单分子特性.
- 这项技术在改善癌症评估和外科指导方面具有重大潜力.
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