新型近红外染料准碳酸无水酶IX用于光成像应用
Roberta Napolitano1, Alessia Adamo, Luca Biondi
1From Bracco Imaging S.p.A., Milan, Italy.
Investigative radiology
|May 7, 2025
概括
新型光探针针对碳酸无水酶IX (CAIX) 显示高亲和力和特异性用于瘤成像. 这些CAIX向探针证明了有效的体内瘤积累,支持光引导手术的临床应用.
科学领域:
- 生物医学工程 生物医学工程
- 有机化学 有机化学
- 医疗成像医学成像
背景情况:
- 碳酸无水酶IX (CAIX) 是一种与瘤相关的生物标志物,在缺氧瘤中被上调.
- 光导向的手术需要敏感的成像技术来检测残留的癌症.
- 乙胺是一种已知的药物,可用于针对性染料开发进行修改.
研究的目的:
- 设计,合成和评估新的CAIX准光探针.
- 评估准部分和光体结构对成像效能的影响.
- 为了研究这些探头在光导向手术中的潜力.
主要方法:
- 合成了基于乙胺的新型光探针,使用乙胺衍生物功能化.
- 在体外表征包括光学特性,结合亲和力 (bCAII,HSA) 和基于细胞的测试 (HT-29细胞).
- 使用光学成像在老鼠异种移植模型中对瘤向疗效的体内评估.
主要成果:
- 针对C8-乙胺 (C8-AZA) 的小组显示出对CAIX.的最大亲和力.
- 与现有的探针相比,Dye1-C8-AZA对表达bCAII和CAIX的细胞表现出更高的结合亲和力.
- 所有合成的C8-AZA探针在体内显示出高和特异性的瘤积累,通常表现优于HypoxyFluor-1.
结论:
- 针对C8-AZA的部分增强了探针对CAIX的亲和力和特异性.
- 光素结构显著影响体内成像效率.
- 这些新的CAIX向探针,特别是Dye1-C8-AZA,在瘤光成像中显示出临床翻译的前景.
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