Source 1primary paper2025Chemical Communications
Toolkit/recombinase polymerase amplification
recombinase polymerase amplification
Also known as: RPA
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Recombinase polymerase amplification (RPA) is used in the cited study as an amplification component within a combined diagnostic workflow that also includes photoactivated CRISPR-Cas12a and a tube-in-tube structure for visual detection of HPV16. The supplied evidence supports its inclusion in this integrated assay, but does not provide mechanistic detail about RPA itself.
Usefulness & Problems
Why this is useful
In the cited work, RPA is useful as part of a combined system for visual HPV16 detection. The study further presents the overall platform as a potential on-site diagnostic tool with possible portability and speed benefits.
Source:
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
Problem solved
The evidence indicates that RPA contributes to an integrated assay designed to detect HPV16 visually. The specific problem addressed is incorporation of nucleic acid amplification into a light-triggered CRISPR-Cas12a diagnostic workflow.
Source:
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
Published Workflows
Objective: Develop a rapid and sensitive fluorescent biosensor for detection of virulent duck plague virus strains.
Why it works: The workflow first amplifies the DPV target under isothermal conditions, then uses Cas12a for sequence-specific recognition and cleavage activation, and finally boosts fluorescence output through CHA signal amplification.
isothermal target nucleic acid amplificationCas12a sequence-specific recognition with collateral cleavage activationenzyme-free fluorescent signal amplification by catalytic hairpin assemblyrecombinase polymerase amplificationCRISPR/Cas12a detectioncatalytic hairpin assembly fluorescence amplification
Stages
- 1.Isothermal target amplification(functional_characterization)
This stage generates sufficient target nucleic acid for downstream sequence-specific Cas12a recognition.
Selection: Amplify the conserved DPV-CHv UL2 gene region rapidly and efficiently under isothermal conditions.
- 2.CRISPR/Cas12a sequence-specific recognition(functional_characterization)
This stage converts presence of the correct amplified target into an activated Cas12a cleavage signal for downstream amplification.
Selection: Use Cas12a to recognize the amplified target sequence and activate collateral cleavage activity.
- 3.CHA fluorescent signal amplification(secondary_characterization)
This stage enhances the detectable fluorescence output after Cas12a activation to improve assay sensitivity.
Selection: Use the CHA cascade reaction for enzyme-free fluorescent signal amplification.
- 4.Clinical and PCR comparison(confirmatory_validation)
This stage checks whether the assay output is consistent with established diagnostic readouts.
Selection: Compare biosensor results with clinical detection and PCR diagnosis.
Steps
- 1.Design RPA primers against the conserved DPV-CHv UL2 gene region
Enable rapid and efficient amplification of the target nucleic acid under isothermal conditions.
Target-specific primer design is required before amplification can be performed.
- 2.Amplify target nucleic acids by RPA under isothermal conditionsbiosensor amplification module
Rapidly increase target nucleic acid abundance for downstream detection.
Amplification precedes Cas12a recognition so that sufficient target is available for sequence-specific detection.
- 3.Recognize amplified target with CRISPR/Cas12a and activate collateral cleavagebiosensor recognition module
Convert presence of the correct target sequence into activated Cas12a cleavage activity.
Sequence-specific recognition follows amplification because Cas12a is used to detect the amplified target.
- 4.Amplify fluorescence signal through the CHA cascade reactionbiosensor signal amplification module
Enhance fluorescent output without enzymes to improve sensitivity.
Signal amplification is applied after Cas12a activation to boost the detectable readout generated by target recognition.
- 5.Compare biosensor results with clinical detection and PCR diagnosisassay under validation
Assess agreement of the biosensor with established diagnostic approaches.
Confirmatory comparison is performed after assay readout to evaluate practical diagnostic consistency.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete method used to build, optimize, or evolve an engineered system.
Mechanisms
nucleic acid amplificationTechniques
No technique tags yet.
Target processes
diagnosticeditingrecombinationInput: Light
Implementation Constraints
The cited implementation places RPA in a workflow combined with photoactivated CRISPR-Cas12a and a tube-in-tube structure for HPV16 detection. The overall assay is associated with visual readout facilitated by 302 nm blue UV light, but the evidence does not specify RPA construct design, enzymes, primers, or reaction setup.
The supplied evidence does not describe RPA's molecular mechanism, target sequence requirements, reaction conditions, sensitivity, specificity, or standalone performance. Validation is limited here to its use as one component of a single combined HPV16 diagnostic application.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
illumination wavelength 302 nm
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
Approval Evidence
1 source3 linked approval claimsfirst-pass slug recombinase-polymerase-amplification
combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA)
Source:
applicationsupports
The combined system enables visual detection of HPV16 facilitated by blue UV light at 302 nm.
to enable simple, rapid and convenient visualization detection of HPV16, facilitated by blue UV light at 302 nm
Source:
combination methodsupports
The study combines photoactivated CRISPR-Cas12a, a tube-in-tube structure, and recombinase polymerase amplification for visual detection of HPV16.
we have combined photoactivated CRISPR-Cas12a with tube-in-tube structure and recombinase polymerase amplification (RPA) to enable simple, rapid and convenient visualization detection of HPV16
Source:
potential use casesupports
The system is presented as a potential tool for on-site diagnostic use with possible portability and speed benefits.
It serves as a potential tool for on-site diagnostic use, which could be beneficial in terms of portability and speed.
Source:
Comparisons
Source-backed strengths
The main supported strength is compatibility with photoactivated CRISPR-Cas12a and a tube-in-tube assay format in a visual HPV16 detection system. The overall combined system is reported to enable visual detection facilitated by blue UV light at 302 nm and is proposed for potential on-site use.
Ranked Citations
- 1.