Volume 63, Issue 32 e202406332
Research Article

Dual-Locked Fluorescent Probes Activated by Aminopeptidase N and the Tumor Redox Environment for High-Precision Imaging of Tumor Boundaries

Yang Shen

Yang Shen

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

These authors contributed equally to this work.

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Dr. Wei Li

Dr. Wei Li

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816 P. R. China

These authors contributed equally to this work.

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Prof. Zhixuan Zhou

Prof. Zhixuan Zhou

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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Dr. Junchao Xu

Dr. Junchao Xu

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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Yuhang Li

Yuhang Li

Department of Hepatobiliary Surgery/ Central Laboratory, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, 410005 P. R. China

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Haiyan Li

Haiyan Li

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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Xudong Zheng

Xudong Zheng

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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Dr. Sulai Liu

Corresponding Author

Dr. Sulai Liu

Department of Hepatobiliary Surgery/ Central Laboratory, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, 410005 P. R. China

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Prof. Xiao-Bing Zhang

Prof. Xiao-Bing Zhang

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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Prof. Lin Yuan

Corresponding Author

Prof. Lin Yuan

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082 P. R. China

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First published: 23 May 2024
Citations: 34

Graphical Abstract

A series of offensive and defensive integration (ODI) strategy-based fluorescent probes depending on the “attack and defense systems” required for the persistence of tumors is reported. FANQ was screened for tumor imaging, distinguishing between cancerous tissue and adjacent tissue with an obvious tumor boundary.

Abstract

Clear delineation of tumor margins is essential for accurate resection and decreased recurrence rate in the clinic. Fluorescence imaging is emerging as a promising alternative to traditional visual inspection by surgeons for intraoperative imaging. However, traditional probes lack accuracy in tumor diagnosis, making it difficult to depict tumor boundaries accurately. Herein, we proposed an offensive and defensive integration (ODI) strategy based on the “attack systems (invasive peptidase) and defense systems (reductive microenvironment)” of multi-dimensional tumor characteristics to design activatable fluorescent probes for imaging tumor boundaries precisely. Screened out from a series of ODI strategy-based probes, ANQ performed better than traditional probes based on tumor unilateral correlation by distinguishing between tumor cells and normal cells and minimizing false-positive signals from living metabolic organs. To further improve the signal-to-background ratio in vivo, derivatized FANQ, was prepared and successfully applied to distinguish orthotopic hepatocellular carcinoma tissues from adjacent tissues in mice models and clinical samples. This work highlights an innovative strategy to develop activatable probes for rapid diagnosis of tumors and high-precision imaging of tumor boundaries, providing more efficient tools for future clinical applications in intraoperative assisted resection.

Conflict of interests

L.Y., Y.S., W.L.,and X.Z. are inventors of the patent (Patent Application number 202311539546.X, pending), which was filed by Hunan University. The other authors declare no competing interests..

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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