RPB0525

Pathogen Description

Target Pathogen Pathogen Name NCBI Taxonomy ID Order Family Genus Species Pathogen type
Japanese Encephalitis Virus Japanese encephalitis virus,Japanese encephalitis (JE) virus,Japanese encephalitis virus JE,Japanese encephalitis virus JEV 11072 Amarillovirales Flaviviridae Orthoflavivirus Orthoflavivirus japonicum Viruses

Primer Description

Primer Name Sequence(5'-3') Length(bp) Primer Final Concentration(μM) GC Content(%) Predicted Melting Temperature(℃) Molecular Weight(g/moles) Positions in GenBank accession number
JEV GIII-F TGCCACGAGGCGTGCCTTTTACCGACCTAG 30 10 μM 60 69.72 9158.98 6912-7649
JEV GIII-R TGTCCTTCTCTGGGCAGCCCTGAGTGCTTC 30 10 μM 60 69.59 9131.94 6912-7649

Gene Description

Target Gene GenBank ID
NS4B EF623989.1

Assay Description

Application Assay Primer Designing Software Reaction Time(min) Assay Temperature(℃) Readout System(s) Limit of Detection(LoD) Sensitivity(%) Specificity(%)
We have achieved sensitive and rapid genotype-specific detection of JEV using DETECTR. RT-RPA-CRISPR-Cas12a NCBI database 40 min 42°C CRISPR-Cas12a 1 × 10² copies \ \

Publication Description

Year of Publication Title Author(s) Journal PMID DOI
2023 A CRISPR-Cas12a-Based Diagnostic Method for Japanese Encephalitis Virus Genotypes I, III, and V Namki Kwak,Bum Ju Park,Yoon-Jae Song Biosensors 37622855 10.3390/bios13080769

A CRISPR-Cas12a-Based Diagnostic Method for Japanese Encephalitis Virus Genotypes I, III, and V

Author(s):

Namki Kwak,Bum Ju Park,Yoon-Jae Song

Journal:

Biosensors

Year:

2023

Abstract:

The Japanese encephalitis virus (JEV) is prevalent in Asian countries, including Korea, Japan, China, Vietnam, and India. JEV is transmitted to humans by Culex mosquitoes. Despite extensive research efforts, no approved antiviral agents are currently available, although JE can be prevented by vaccination. DNA endonuclease-targeted CRISPR trans reporter (DETECTR) is a newly emerging CRISPR-Cas12a-based molecular diagnostic method combined with isothermal nucleic acid amplification. In this study, DETECTR with reverse transcription-recombinase polymerase amplification (RT-RPA) was effectively utilized for JEV diagnosis and detected down to 10 RNA copies for JEV genotype I (GI) and 1 × 102 copies for both GIII and GV, achieving similar sensitivity to RT-PCR while displaying no cross-reaction with other viruses. A one-tube, one-temperature format of DETECTR was further developed, and its efficiency compared with that of conventional DETECTR.