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2016 ; 20
(Suppl 1
): S38-48
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Fabrication of Polymerase Chain Reaction Plastic Lab-on-a-Chip Device for Rapid
Molecular Diagnoses
#MMPMID27230459
Trinh KT
; Zhang H
; Kang DJ
; Kahng SH
; Tall BD
; Lee NY
Int Neurourol J
2016[May]; 20
(Suppl 1
): S38-48
PMID27230459
show ga
PURPOSE: We aim to fabricate a thermoplastic poly(methylmethacrylate) (PMMA)
Lab-on-a-Chip device to perform continuous- flow polymerase chain reactions
(PCRs) for rapid molecular detection of foodborne pathogen bacteria. METHODS: A
miniaturized plastic device was fabricated by utilizing PMMA substrates mediated
by poly(dimethylsiloxane) interfacial coating, enabling bonding under mild
conditions, and thus avoiding the deformation or collapse of microchannels.
Surface characterizations were carried out and bond strength was measured. The
feasibility of the Lab-on-a-Chip device for performing on-chip PCR utilizing a
lab-made, portable dual heater was evaluated. The results were compared with
those obtained using a commercially available thermal cycler. RESULTS: A PMMA
Lab-on-a-Chip device was designed and fabricated for conducting PCR using
foodborne pathogens as sample targets. A robust bond was established between the
PMMA substrates, which is essential for performing miniaturized PCR on plastic.
The feasibility of on-chip PCR was evaluated using Escherichia coli O157:H7 and
Cronobacter condimenti, two worldwide foodborne pathogens, and the target
amplicons were successfully amplified within 25 minutes. CONCLUSIONS: In this
study, we present a novel design of a low-cost and high-throughput thermoplastic
PMMA Lab-on-a-Chip device for conducting microscale PCR, and we enable rapid
molecular diagnoses of two important foodborne pathogens in minute resolution
using this device. In this regard, the introduced highly portable system design
has the potential to enable PCR investigations of many diseases quickly and
accurately.