At present, the early diagnosis and treatment of NSCLC has become an international research hotspot. However, how to realize the organic combination of highly sensitive and high-resolution
tumor imaging diagnosis and effective treatment, and to provide effective information for the diagnosis and treatment of
cancer is still a major problem in the integration of
cancer diagnosis and treatment. In this study, based on the
Crizotinib has a good targeted inhibitory effect on ALK positive
tumor cells, the near-infrared targeted
fluorescent dye IR-780 was covalently bound with the drug molecule
Crizotinib, thus the near-infrared
fluorescent probe IR-780-Crizotinib targeting ALK positive
tumor cells was synthesized. The probe structure is confirmed by NMR and MS. The optical properties of the
fluorescent probe and the imaging process in ALK positive
tumor-bearing mice were analyzed using ultraviolet spectrophotometer, near-infrared fluorescence spectrometer, and near-infrared fluorescence imaging system. The results show that the probe had better photoactivity. In vivo imaging shows that the probe maintained the biological activity of
Crizotinib, effectively targeting the
tumor site involved with clear imaging, and ultimately excreted from the body. It was confirmed that the probe could be used for the tracking, positioning and targeted
therapy of nude mice with ALK positive
tumors in vivo, thus exploring a new approach for the clinical application of near-infrared
fluorescent probe to detect ALK positive
tumors in the future.