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Simple Approaches to Minimally-Instrumented, Microfluidic-Based Point-of-Care Nucleic Acid Amplification Tests
Journal article   Open access   Peer reviewed

Simple Approaches to Minimally-Instrumented, Microfluidic-Based Point-of-Care Nucleic Acid Amplification Tests

Michael G. Mauk, Jinzhao Song, Changchun Liu and Haim H. Bau
Biosensors (Basel), v 8(1)
26 Feb 2018
PMID: 29495424
url
https://doi.org/10.3390/bios8010017View
Published, Version of Record (VoR) Open

Abstract

Chemistry Chemistry, Analytical Instruments & Instrumentation Nanoscience & Nanotechnology Physical Sciences Science & Technology Science & Technology - Other Topics Technology
Designs and applications of microfluidics-based devices for molecular diagnostics (Nucleic Acid Amplification Tests, NAATs) in infectious disease testing are reviewed, with emphasis on minimally instrumented, point-of-care (POC) tests for resource-limited settings. Microfluidic cartridges ('chips') that combine solid-phase nucleic acid extraction; isothermal enzymatic nucleic acid amplification; pre-stored, paraffin-encapsulated lyophilized reagents; and real-time or endpoint optical detection are described. These chips can be used with a companion module for separating plasma from blood through a combined sedimentation-filtration effect. Three reporter types: Fluorescence, colorimetric dyes, and bioluminescence; and a new paradigm for end-point detection based on a diffusion-reaction column are compared. Multiplexing (parallel amplification and detection of multiple targets) is demonstrated. Low-cost detection and added functionality (data analysis, control, communication) can be realized using a cellphone platform with the chip. Some related and similar-purposed approaches by others are surveyed.

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Web of Science research areas
Chemistry, Analytical
Instruments & Instrumentation
Nanoscience & Nanotechnology
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