Related Experiment Video
Updated: Jul 11, 2025
07:25
Detection of Phytophthora capsici in Irrigation Water using Loop-Mediated Isothermal Amplification
Published on: June 25, 2020
6.5K
Pyrophosphate detection method using 5-Br-PAPS to detect nucleic acid amplification - Application to LAMP method
Eisaku Hokazono1, Saori Fukumoto1, Takeshi Uchiumi1
1Division of Medical Sciences and Technology Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Japan.
Analytical Biochemistry
|November 8, 2023
Summary
This study introduces a new assay for detecting nucleic acid amplification by measuring pyrophosphate. This rapid and sensitive method uses simple reagents and an automated analyzer for efficient genetic testing.
Area of Science:
- Biochemistry
- Molecular Biology
- Analytical Chemistry
Background:
- Nucleic acid amplification is crucial for genetic testing.
- Current detection methods are often costly, require specialized equipment, or lack sensitivity.
Purpose of the Study:
- To develop a sensitive, rapid, and simple assay for detecting nucleic acid amplification.
- To utilize pyrophosphate, a byproduct of amplification, as a detection indicator.
Main Methods:
- The assay detects pyrophosphate, a byproduct of nucleic acid amplification.
- Pyrophosphate is converted to hydrogen peroxide, which oxidizes Fe(II) to Fe(III).
- A metal chelator (5-Br-PAPS) forms a colored complex with Fe(III) for detection.
Main Results:
- The assay demonstrated high sensitivity with a detection limit of 0.075 μmol/L.
- Within-run reproducibility was less than 3.67%.
- The method successfully detected pyrophosphate in loop-mediated isothermal amplification samples within 10 minutes.
Conclusions:
- The proposed pyrophosphate-based assay offers a rapid, simple, and sensitive alternative for detecting nucleic acid amplification.
- This technique has potential applications in various genetic testing fields.
- It overcomes limitations of existing nucleic acid detection methods.
