CRISPR-Hg: Rapid and visual detection of Hg2+ based on PCR coupled with CRISPR/Cas12a.
Talanta
; 277: 126379, 2024 Sep 01.
Article
en En
| MEDLINE
| ID: mdl-38852343
ABSTRACT
Mercury (Hg) is a notorious toxic heavy metal, causing neurotoxicity and liver damage, posing grave threats to human health and environmental safety. There is an urgent imperative for developing novel Hg2+ detection methods. In this work, we developed a CRISPR-based method for Hg2+ detection named CRISPR-Hg. A CRISPR/Cas12a system was employed and could be activated by the PCR product, generating fluorescence signals based on the trans-cleavage activity. CRISPR-Hg exhibited remarkable selectivity and specificity, achieving a detection limit of 10 pM and minimal interference with background signals. This approach has been successfully applied to detect Hg2+ in real samples, including water, soil, and mushroom. Ulteriorly, a portable device was devised to streamline the readout of fluorescence signals by a smartphone within 30 min. We offer an affordable, highly selective and visually interpretable method for Hg2+ detection, with the potential for broad application in Hg2+ monitoring for food safety and public health.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Reacción en Cadena de la Polimerasa
/
Sistemas CRISPR-Cas
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Mercurio
Idioma:
En
Revista:
Talanta
Año:
2024
Tipo del documento:
Article