An Innovative Aggregation-Induced Emission-Based NIR Fluorescent Probe for Visualizing Carboxylesterases in Living Cells, Zebrafish, and Tumor-Bearing Mice

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2024 Aug 10

PMID 39125064

Authors

Chao Gao

Dan-Dan Chen

Hu-Wei Liu

Ming-Lan Ma

Lin Zhang

Hai-Rong Cui

Affiliations

Soon will be listed here.

Abstract

In the human body, carboxylesterases (CEs) play crucial roles in xenobiotic metabolism and lipid homeostasis. But abnormal expression of CEs is highly associated with some diseases, such as hyperlipidemia, diabetes, and liver cancer. Therefore, it is of great importance to develop an efficient tool for the accurate detection of CEs in living organisms. Herein, an innovative near-infrared (NIR) fluorescent probe, - was designed for CE detection based on the aggregation-induced emission (AIE) mechanism. This probe exhibits rapid response (2 min), excellent sensitivity (limit of detection = 8.14 × 10 U/mL), and high selectivity to CEs. Additionally, owing to its good biocompatibility, the - probe enables the monitoring of dynamic changes in CE levels under drug-induced modulation in living cells and zebrafish. More importantly, the - probe was successfully employed to image liver tumors and assist in tumor resection through the real-time monitoring of CEs, indicating that - is promising to guide liver cancer surgery. Therefore, the - probe can not only enrich the strategies for CE detection in biological systems but also has great potential for some clinical imaging applications, including medical diagnosis, preclinical research, and imaging-guided surgery.

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