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CRISPR-On-Beads: A Simple and Sensitive Approach for Bacterial DNA Detection

Ye, J.; Liu, L.; Peng, R.; Xu, F.; Men, Y.; Du, K.

2025-05-02 bioengineering
10.1101/2025.05.02.651981 bioRxiv
Show abstract

CRISPR/Cas12a, recognized for its high efficiency and specificity in nucleic acid recognition, has found extensive applications in infectious disease sensing. Nonetheless, a significant challenge persists in devising a simple method for the rapid, convenient, and accurate visualization of detection results. In this study, we demonstrate an innovative and simple CRISPR-on-beads assay for visual detection of methicillin-resistant Staphylococcus aureus (MRSA). This approach combines isothermal target amplification, CRISPR/LbCas12a-mediated cleavage, and magnetic bead-based probe binding for signal amplification, enabling rapid and convenient identification of bacterial DNA. Our results show that this detection method exhibits both high sensitivity and specificity, with a detection limit as low as 30 CFU/L. This newly developed biosensing approach can easily be integrated with a portable fluorescence microscope for medical diagnostics in resource-limited settings.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.