Genome-wide transcriptome analysis in yeast using high-density tiling arrays

Area of Science:

• Genomics
• Molecular Biology
• Biotechnology

Background:

• Transcription extends beyond protein-coding genes, producing diverse RNA molecules with unknown functions.
• Most non-coding RNAs lack identified cellular roles, necessitating advanced methods for comprehensive study.
• Tiling microarrays offer a powerful approach to analyze transcription across entire genomes.

Purpose of the Study:

• To describe a protocol for yeast RNA analysis using tiling microarrays.
• To enable comprehensive study of both coding and non-coding RNA transcription.
• To facilitate the identification and structural analysis of diverse RNA species in yeast.

Main Methods:

• Extraction of RNA from Saccharomyces cerevisiae.
• Conversion of RNA to first-strand cDNA.
• Fragmentation and labeling of cDNA for hybridization to yeast tiling arrays.

Main Results:

• The described protocol enables strand-specific transcription measurement across the full yeast genome.
• It allows for the identification of non-coding RNAs and analysis of transcript structures.
• The method facilitates the study of alternative transcription start/stop and processing sites.

Conclusions:

• This tiling microarray protocol provides a comprehensive tool for yeast RNA research.
• It aids in understanding the roles of diverse RNA molecules, including non-coding RNAs, within cells.
• The method enhances the study of transcript structure, including untranslated regions and alternative splicing.