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Cited by 404

The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.

CRISPR-Cas12a-Derived Photoelectrochemical Biosensor for Point-Of-Care Diagnosis of Nucleic Acid

Zeng, Ruijin, Gong, Hexiang, Li, Yanli, Li, Yuxuan, Lin, Wei, Tang, Dianping, Knopp, Dietmar·2022·Analytical Chemistry

Abstract

This work presented a point-of-care (POC) photoelectrochemical (PEC) biosensing for the detection of human papillomavirus-16 (HPV-16) on a portable electrochemical detection system by using CRISPR-Cas12a trans-cleaving the G-quadruplex for the biorecognition/amplification and a hollow In 2 O 3 –In 2 S 3 -modified screen-printed electrode (In 2 O 3 –In 2 S 3 /SPE) as the photoactive material. G-quadruplexes were capable of biocatalytic precipitation (H 2 O 2 -mediated 4-chloro-1-naphthol oxidation) on the In 2 O 3 –In 2 S 3 /SPE surface, resulting in a weakened photocurrent, but suffered from trans-cleavage when the CRISPR-Cas12a system specifically recognized the analyte. The photocurrent results could be directly observed with the card-sized electrochemical device via a smartphone, which displayed a high-value photocurrent for these positive samples, while a low-value photocurrent for the target-free samples. Such a system exhibited satisfying photocurrent responses toward HPV-16 within a wide working range from 5.0 to 5000 pM and allowed for detection of HPV-16 at a concentration as low as 1.2 pM. The proposed assay provided a smartphone signal readout to enable the rapid screening PEC determination of HPV-16 concentration without sophisticated instruments, thus meeting the requirements of remote areas and resource-limited settings. We envision that combining an efficient biometric PEC sensing platform with a wireless card-sized electrochemical device will enable high-throughput POC diagnostic analysis.

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Metadata

Authors
Zeng, R., Gong, H., Li, Y., Li, Y., Lin, W., Tang, D., & Knopp, D.
Venue
Analytical Chemistry
Published
2022-05-12
Volume
94
Issue
20
Pages
7442-7448
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W4280578891
Cited by
404
References
16
FWCI
24.17
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: CRISPR-Cas12a-Derived Photoelectrochemical Biosensor for Point-Of-Care Diagnosis of Nucleic Acid. https://app.cochat.ai/papers/10.1021/acs.analchem.2c01373
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Zeng, R., Gong, H., Li, Y., Li, Y., Lin, W., Tang, D., & Knopp, D. (2022). CRISPR-Cas12a-Derived Photoelectrochemical Biosensor for Point-Of-Care Diagnosis of Nucleic Acid. Analytical Chemistry. https://doi.org/10.1021/acs.analchem.2c01373

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