An Integrated, Real-Time Convective PCR System for Isolation, Amplification, and Detection of Nucleic Acids

Convective PCR (CPCR) can perform rapid nucleic acid amplification by inducing thermal convection to continuously, cyclically driving reagent between different zones of the reactor for spatially separate melting, annealing, and extending in a capillary tube with constant heating temperatures at diff...

Full description

Saved in:
Bibliographic Details
Published in:Chemosensors 2022-07, Vol.10 (7), p.271
Main Authors: Miao, Guijun, Guo, Meng, Li, Ke, Ye, Xiangzhong, Mauk, Michael G, Ge, Shengxiang, Xia, Ningshao, Yu, Duli, Qiu, Xianbo
Format: Article
Language:English
Subjects:
Acids
Amplification
Capillary tubes
Centrifugation
Chemical properties
Convection
convective PCR (CPCR)
Free convection
FTA membrane
Identification and classification
Influenza A
Laboratories
Membranes
Microfluidics
Nucleic acids
Pathogens
point-of-care (POC) test
Polymerase chain reaction
Reagents
Real time
sample preparation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Convective PCR (CPCR) can perform rapid nucleic acid amplification by inducing thermal convection to continuously, cyclically driving reagent between different zones of the reactor for spatially separate melting, annealing, and extending in a capillary tube with constant heating temperatures at different locations. CPCR is promoted by incorporating an FTA membrane filter into the capillary tube, which constructs a single convective PCR reactor for both sample preparation and amplification. To simplify fluid control in sample preparation, lysed sample or wash buffer is driven through the membrane filter through centrifugation. A movable resistance heater is used to heat the capillary tube for amplification, and meanwhile, a smartphone camera is adopted to monitor in situ fluorescence signal from the reaction. Different from other existing CPCR systems with the described simple, easy-to-use, integrated, real-time microfluidic CPCR system, rapid nucleic acid analysis can be performed from sample to answer. A couple of critical issues, including wash scheme and reaction temperature, are analyzed for optimized system performance. It is demonstrated that influenza A virus with the reasonable concentration down to 1.0 TCID50/mL can be successfully detected by the integrated microfluidic system within 45 min.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors10070271