在体内NIR-II光成像中的低分子量4,4'-氨酸
Ritesh K Isuri1,2, Michael C Hart3, Serwa Adusei-Poku4
1Department of Radiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA. risuri@sas.upenn.edu.
Npj imaging
|March 4, 2026
概括
新的近红外II (NIR-II) 有机光体,称为QuCy染料,为光引导手术 (FGS) 提供更深的组织透和更好的对比度. 这些新型药物克服了当前NIR-I染料的局限性,改善了手术可视化.
科学领域:
- 有机化学 有机化学
- 生物医学成像技术 生物医学成像技术
- 材料科学 材料科学 材料科学
背景情况:
- 光导向手术 (FGS) 面临的局限性是由于现有的近红外I (NIR-I) 光灯的透深度和高自光.
- 开发新的对比剂对于推进FGS能力和改善外科手术结果至关重要.
研究的目的:
- 开发在近红外II (NIR-II) 区域发射的新型有机光体,用于增强FGS.
- 合成和表征具有改善光学特性和组织透性的4,4'-氨酸 (QuCy) 衍生物.
主要方法:
- 合理的分子设计使用N替代的化物部分来调整电子特性和辐射波长.
- 通过模块化合成路径合成五种QuCy衍生物 (JAM317-319,JAP331,JAP334).
- 光谱分析,密度函数理论 (DFT) 计算,以及动物模型中的体内评估.
主要成果:
- 合成的QuCy染料在NIR-II窗口 (976-1004nm) 中表现出最大的排放值.
- QuCy染料表现出增强的π-结合,减少了HOMO-LUMO间隙,以及高达225nm的黑色变化.
- 在体内研究表明,与NIR-I染料相比,JAM317提供了高分辨率的血管成像,高效的瘤吸收和低细胞毒性,具有更好的深度透和对比度.
结论:
- QuCy染料代表了一个有前途的新类有机光体,用于NIR-II成像.
- 这些新型药物在光引导手术中比目前的NIR-I光剂具有显著的优势.
- QuCy染料显示出作为外科应用的先进对比剂的临床转化潜力.
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