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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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Single Molecule Fluorescence In Situ Hybridization smFISH Analysis in Budding Yeast Vegetative Growth and Meiosis

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Optimization of a microarray for fission yeast.

Dong-Uk Kim¹, Minho Lee², Sangjo Han³

¹Aging Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon 34141, Korea.

Genomics & Informatics

|October 15, 2019

Summary

This summary is machine-generated.

This study optimized bar-code microarrays for fission yeast, improving gene identification. The enhanced array platform efficiently represents thousands of gene deletion strains for functional genomics research.

Keywords:

bar-code fission yeast gene-deletion microarray tag

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Microarray Analysis for Saccharomyces cerevisiae

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Published on: April 7, 2011

Area of Science:

Molecular Biology
Genomics
Yeast Genetics

Background:

Bar-code (tag) microarrays enable systematic identification of genes essential for growth under specific conditions.
Yeast gene-deletion collections are valuable tools for functional genomics, but require efficient screening methods.

Purpose of the Study:

To optimize hybridization processes for a fission yeast bar-code microarray.
To enhance the representation and analysis of gene deletion strains using microarray technology.

Main Methods:

Development of a second-generation microarray (48K) with improved probe representation for ~10,000 up-/down-tags.
Optimization of PCR conditions, including annealing temperature (58°C) and blocking oligonucleotide amounts.
Refinement of cell cultivation (25°C) and activation protocols for enhanced signal resolution.

Main Results:

The optimized microarray successfully represented tags from 4,316 out of 4,526 tested strains.
High representation rates were observed for both up-tags (4,072 strains) and down-tags (3,950 strains).
A 1:1 mix ratio of up- and down-tags and a lower cultivation temperature (25°C) proved satisfactory.

Conclusions:

The optimized fission yeast bar-code microarray is a powerful platform for functional genomics.
This technology facilitates the elucidation of unknown gene functions through systematic screening of gene deletion mutants.