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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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Improved Protocol for Chromatin Immunoprecipitation from Mouse Skeletal Muscle

Improved Protocol for Chromatin Immunoprecipitation from Mouse Skeletal Muscle

Published on: November 6, 2017

Chicken skeletal muscle-associated macroarray for gene discovery.

E C Jorge¹, C M R Melo, M F Rosário

¹Departamento de Zootecnia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brasil.

Genetics and Molecular Research : GMR

|March 4, 2010

Summary

Researchers developed a chicken skeletal muscle macroarray to identify tissue-specific gene expression. This tool helps understand gene function and regulatory networks in chicken development and growth.

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Area of Science:

Genomics
Molecular Biology
Animal Science

Background:

Gene expression profiling using macroarrays and microarrays is crucial for understanding gene function.
Chicken skeletal muscle research benefits from tools to analyze gene expression patterns.

Purpose of the Study:

To construct and validate a chicken skeletal muscle-associated macroarray for gene expression analysis.
To identify tissue-specific transcripts and explore gene functions in chicken skeletal muscle.

Main Methods:

Development of a muscle-specific expressed sequence tag (EST) database.
Creation of a macroarray representing ~4500 chicken genes.
Hybridization assays across five adult chicken tissues (skeletal muscle, heart, liver, brain, skin).
Hierarchical clustering and BLAST analysis for gene function and expression patterns.

Main Results:

Generated a tissue expression dataset for ~4500 chicken genes.
Identified 43 'tissue-specific' transcripts and 112 co-expressed uncharacterized transcripts.
Validated expression data accuracy by comparing with known transcripts.
Revealed consistent clustering of genes related to 'developmental growth'.

Conclusions:

The chicken skeletal muscle macroarray is a reliable tool for functional genomics.
The platform aids in dissecting tissue-regulatory networks and predicting novel gene functions.
It supports research into chicken development, growth potential, and tissue-specific gene identification.