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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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Updated: Jun 14, 2026

Performing Custom MicroRNA Microarray Experiments

Performing Custom MicroRNA Microarray Experiments

Published on: October 28, 2011

Performance evaluation of commercial miRNA expression array platforms.

Sachin Sah¹, Matthew N McCall, Deepa Eveleigh

¹Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA. ririzarr@jhsph.edu.

BMC Research Notes

|March 20, 2010

Summary

This summary is machine-generated.

Four commercial microRNA (miRNA) array technologies were compared. Ambion and Agilent platforms showed higher accuracy, while Illumina and Exiqon platforms demonstrated greater specificity, with data analysis significantly impacting precision.

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Last Updated: Jun 14, 2026

Performing Custom MicroRNA Microarray Experiments

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Published on: October 28, 2011

Profiling of Pre-micro RNAs and microRNAs using Quantitative Real-time PCR (qPCR) Arrays

Profiling of Pre-micro RNAs and microRNAs using Quantitative Real-time PCR (qPCR) Arrays

Published on: December 3, 2010

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

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

Published on: April 14, 2015

Area of Science:

Molecular Biology
Genomics
Biomarker Discovery

Background:

microRNAs (miRNAs) are endogenous transcripts regulating gene expression.
miRNA abundance correlates with biological function.
miRNA expression profiles serve as potential biomarkers for diagnostics and therapeutics.

Purpose of the Study:

To evaluate and compare the performance characteristics of four commercial miRNA array platforms.
To identify the most accurate and specific platforms for miRNA profiling.
To assess the impact of data analysis on miRNA array performance.

Main Methods:

Comparative analysis of four distinct commercial miRNA array technologies.
Evaluation of performance metrics including accuracy, specificity, and precision.
Assessment of data analysis methodologies on experimental outcomes.

Main Results:

All four tested miRNA array platforms demonstrated good performance across individual metrics.
Ambion and Agilent platforms exhibited superior accuracy in miRNA detection.
Illumina and Exiqon platforms provided higher specificity in distinguishing miRNA targets.

Conclusions:

Platform choice significantly influences miRNA profiling accuracy and specificity.
Data analysis strategies are critical for enhancing the precision of miRNA expression data.
Selection of appropriate miRNA array technology and analysis methods is crucial for reliable biomarker development.