Isothermal Recombinase Polymerase Amplification (RPA) of <i>E. coli</i> gDNA in Commercially Fabricated PCB-Based Microfluidic Platforms

Printed circuit board (PCB) technology has been recently proposed as a convenient platform for seamlessly integrating electronics and microfluidics in the same substrate, thus facilitating the introduction of integrated and low-cost microfluidic devices to the market, thanks to the inherent upscalin...

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Autores principales: Maria Georgoutsou-Spyridonos, Myrto Filippidou, Georgia D. Kaprou, Dimitrios C. Mastellos, Stavros Chatzandroulis, Angeliki Tserepi
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
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RPA
Acceso en línea:https://doaj.org/article/0b499f969b6b4948a3af0fa25c02e8ab
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Sumario:Printed circuit board (PCB) technology has been recently proposed as a convenient platform for seamlessly integrating electronics and microfluidics in the same substrate, thus facilitating the introduction of integrated and low-cost microfluidic devices to the market, thanks to the inherent upscaling potential of the PCB industry. Herein, a microfluidic chip, encompassing on PCB both a meandering microchannel and microheaters to accommodate recombinase polymerase amplification (RPA), is designed and commercially fabricated for the first time on PCB. The developed microchip is validated for RPA-based amplification of two <i>E. coli</i> target genes compared to a conventional thermocycler. The RPA performance of the PCB microchip was found to be well-comparable to that of a thermocycler yet with a remarkably lower power consumption (0.6 W). This microchip is intended for seamless integration with biosensors in the same PCB substrate for the development of a point-of-care (POC) molecular diagnostics platform.