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Updated: Aug 22, 2026

Rapid and Specific Detection of Acinetobacter baumannii Infections Using a Recombinase Polymerase Amplification/Cas12a-based System
Published on: April 25, 2025
A lock-and-key aptamer probe gates CRISPR/Cas12a trans-cleavage for antibiotic detection
Guoqi Ding1,2, Yulin Li1,2, Yao Xiao1,2
1School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Abstract:
A lock-and-key aptamer-CRISPR/Cas12a strategy was developed to convert antibiotic recognition into signal-off fluorescence. Antibiotic binding disrupted the locking domain-maintained stem-loop structure, suppressed T4 DNA polymerase-mediated activator generation and inhibited Cas12a trans-cleavage, enabling selective antibiotic detection and providing a programmable strategy for small-molecule sensing.
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