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Chinese Archives of General Surgery(Electronic Edition) ›› 2023, Vol. 17 ›› Issue (03): 173-177. doi: 10.3877/cma.j.issn.1674-0793.2023.03.003

• Original Article • Previous Articles     Next Articles

Preparation of a novel VEGFR-targeting probe second near-infrared window in a mouse model of colorectal cancer

Bo Wang, Zirui Bai, Jian Li()   

  1. Department of Hepatobiliary Surgery and Liver Transplantation, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
  • Received:2023-04-03 Online:2023-06-01 Published:2023-06-15
  • Contact: Jian Li

Abstract:

Objective

To investigate the imaging effect of the second near-infrared window (NIR-Ⅱ, 1 000-1 700 nm), a novel VEGFR-targeting probe ICG-PEG5000-Bev in a mouse model of colorectal cancer.

Methods

ICG-PEG5000-Bev, a novel VEGFR-targeting probe in NIR-Ⅱ region, was prepared to verify its spectral characterization and biosafety. The in vivo imaging effect and application prospect of ICG-PEG5000-Bev was further explored by using the NIR-Ⅱ imaging device in mice model with CT-26-luc colorectal cancer.

Results

ICG-PEG5000-Bev had good biological safety. Spectral experiments showed that it had NIR-Ⅱ imaging ability, and the fluorescence intensity increased linearly with the increase of probe solution concentration within a certain range. The NIR-Ⅱ imaging effect of the probe showed that ICG-PEG5000-Bev could achieve in vivo imaging of mice with colorectal cancer, with lower background signal strength than NIR-Ⅰ .

Conclusion

ICG-PEG5000-Bev can be used to detect colorectal cancer in mice in vivo with good biosafety and strong clinical transformation value.

Key words: Vascular endothelial growth factor receptor, Colorectal neoplasms, Fluorescence imaging, The second near-infrared window

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