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DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Probe-based Real-time PCR Approaches for Quantitative Measurement of microRNAs

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Low-Density TaqMan® Array Cards for the Detection of Pathogens.

Jude Heaney^1,2, Kathryn Rolfe³, Nicholas S Gleadall³

¹Department of Medicine, University of Cambridge, Cambridge, United Kingdom.

Methods in Microbiology

|April 15, 2024

Summary

TaqMan® Array Cards (TACs) enable multiplex pathogen detection for infectious disease diagnosis. This technology allows simultaneous testing of up to 48 targets from one sample, advancing syndromic testing.

Keywords:

Array ECMO Gastrointestinal Jaundice PCR Pathogen detection Respiratory Syndromic TAC TaqMan

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Area of Science:

Microbiology
Molecular Diagnostics
Infectious Diseases

Background:

Real-time PCR assays have transformed diagnostic microbiology.
Multiplex assays are limited by fluorophore availability, restricting simultaneous target detection.
Current focus is often on individual pathogen detection.

Purpose of the Study:

To describe the development and application of TaqMan® Array Cards (TACs).
To showcase TACs for syndromic infectious disease diagnosis.
To illustrate the design, optimization, and use of TACs for various infections.

Main Methods:

Development of TaqMan® Array Cards (TACs) for multiplex real-time PCR.
Detection of up to 48 targets from a single nucleic acid extract.
Incorporation of internal and process controls onto array cards.

Main Results:

TACs facilitate the detection of multiple pathogens simultaneously.
Designed TACs for respiratory, gastrointestinal, and liver infections.
Demonstrated positive impact on patient care through syndromic diagnosis.

Conclusions:

TaqMan® Array Cards overcome limitations of traditional multiplex PCR.
TACs enable a comprehensive syndromic approach to infectious disease diagnosis.
This technology has a direct, positive impact on patient management and care.