%0 Journal Article %T FD-1050@NPs-cRGD: A novel NIR-II fluorophore for triple-negative breast cancer imaging. %A Fan H %A Wu W %A Chen Z %A Zhu Q %A Sun X %J Bioorg Med Chem Lett %V 82 %N 0 %D 02 2023 15 %M 36706843 %F 2.94 %R 10.1016/j.bmcl.2023.129153 %X Triple-negative breast cancer (TNBC) is a highly heterogeneous and aggressive disease that is prone to metastasis and recurrence. It accounts for 15-20% of all breast cancer cases. Surgical resection is effective in removing most of the malignant tissues for non-metastasized tumors; however, some residual tumor tissues would be left, leading to a poor prognosis. Thus, real-time monitoring of surgical resection would be beneficial for the surgical resection of tumors. Although NIR-II fluorescent probe-guided surgical resection has been widely used for other types of diseases, it is not currently used for TNBC in clinical practice. Here, we describe the design and synthesis of a novel NIR-II fluorescent probe, FD-1050@NPs-cRGD, that targets TNBC. We found that it has a high fluorescence quantum efficiency, good stability, and low cytotoxicity. In vivo imaging in mice demonstrated a high tumor signal/normal tissue signal ratio, indicating that FD-1050@NPs-cRGD has great potential to be applied in tumor imaging of TNBC.