Related Experiment Videos
The Genexpress IMAGE knowledge base of the human brain transcriptome: a prototype integrated resource for functional
G Piétu1, R Mariage-Samson, N A Fayein
1Genexpress, Centre National de la Recherche Scientifique (CNRS), 94801 Villejuif, France. pietu@infobiogen.fr
Genome Research
|February 19, 1999
Summary
This study profiles human gene expression in infant brain tissue, identifying key transcripts and integrating data for a comprehensive gene map. Findings enhance understanding of brain-specific gene activity and disease associations.
Area of Science:
- Human genomics and transcriptomics
- Neuroscience and gene expression analysis
Background:
- The IMAGE Consortium provides a cDNA library for studying human gene expression.
- Understanding gene expression patterns is crucial for deciphering biological functions and disease mechanisms.
Purpose of the Study:
- To create expression profiles for thousands of human gene transcripts from infant brain tissue.
- To integrate expression data with gene mapping information for a comprehensive knowledge base.
- To identify and validate brain-specific gene transcripts and their locations.
Main Methods:
- Collected expression profiles of 5058 human gene transcripts using cDNA library arrays and semiquantitative hybridization.
- Integrated expression data with sequence clustering and gene mapping information from the Genexpress Index.
- Confirmed brain-specific expression using Northern blot and in situ hybridization analyses.
- Utilized radiation-hybrid mapping to integrate cytogenetic, genetic, physical, and genic map information.
Main Results:
- Expression profiles were generated for 5058 human gene transcripts.
- Twenty-one percent of clones represented low, moderate, or high abundance transcripts.
- Seven gene transcripts showed preferential or specific expression in the brain, validated across multiple tissues and brain regions.
- Established validated map locations for genes, integrating various mapping data types.
Conclusions:
- The Genexpress IMAGE Knowledge Base provides a valuable resource for human gene expression and mapping.
- Identified and validated brain-specific gene transcripts, contributing to neuroscience research.
- Integrated mapping data offers a foundation for disease gene mapping and understanding genetic disorders.