The invention relates to a family of fluorescent compounds that comprise a bridged polycyclo moiety. The compounds can be chemically linked to biomolecules, such as proteins, nucleic acids, and therapeutic small molecules. The compounds can be used for imaging in a variety of medical, biological and diagnostic applications, and are particularly useful for the in vivo imaging of regions of interest within a mammal.
Near-infrared (NIR) fluorescence imaging has attracted much attention in image-guided interventions with unique advantages. However, the clinical translation rate of fluorescence probes is extremely low, primarily due to weak lesion signal contrast and poor specificity. To address this dilemma, a series of small-molecule near-infrared fluorescence probes have been designed for tumor imaging. Among
近红外(NIR)荧光成像以其独特的优势在图像引导干预中备受关注。然而,荧光探针的临床转化率极低,主要是由于病灶信号对比度弱、特异性差。为了解决这一困境,设计了一系列用于肿瘤成像的小分子近红外荧光探针。其中,YQ-04-03表现出显着的光学稳定性和对肿瘤靶向的显着敏感性。而且,在特定浓度和时间范围内,对抗氧化还原剂和激光,它表现出比ICG更好的稳定性。与受试者体内其他非特异性摄取位点相比,YQ-04-03在肿瘤中的保留时间明显更长,其肿瘤与正常组织比(TNR)优于ICG。利用探针成像引导成功切除原位肝癌和腹膜癌,切除的最小视觉病灶约为1 mm 3 。最终,该探针在推进肿瘤示踪剂方面具有巨大潜力。