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Application of Laser Microdissection to Uncover Regional Transcriptomics in Human Kidney Tissue
Published on: June 9, 2020
A human glomerular SAGE transcriptome database
Jenny Nyström1, Wolfgang Fierlbeck, Anna Granqvist
1Department of Medicine, University of Alberta, Edmonton, Alberta, Canada. Jenny.Nystroem@wlab.gu.se
BMC Nephrology
|June 9, 2009
Summary
Researchers created a human glomeruli transcriptome database using SAGE to identify key gene products. This resource aids in understanding renal glomerular function and structure by providing annotated gene expression data.
Area of Science:
- Genomics and Bioinformatics
- Renal Physiology
- Molecular Biology
Background:
- Identifying genes regulating renal glomerular structure and function is crucial for understanding kidney health.
- Previous methods lacked comprehensive gene expression profiles for human glomeruli.
Purpose of the Study:
- To develop an annotated transcriptome database for normal human glomeruli.
- To identify gene products critical for glomerular structure and function using the SAGE approach.
Main Methods:
- Utilized Serial Analysis of Gene Expression (SAGE) to create a transcriptome database.
- Quantified transcript enrichment in glomeruli by comparing tag frequencies to 115 non-glomerular tissues.
- Validated glomerulus-enriched transcripts using Reverse Transcription Polymerase Chain Reaction (RT-PCR).
Main Results:
- Generated a database with 22,907 unique SAGE tags and 48,905 total tags.
- Identified 133 SAGE tags representing transcripts enriched at least 10-fold in glomeruli.
- Confirmed enrichment of podocyte-specific transcripts (e.g., WT-1, podocin) and validated 19 transcripts via RT-PCR.
Conclusions:
- The annotated transcriptome database is a valuable tool for in silico mining of glomerular gene expression.
- The database facilitates the identification of novel gene products involved in renal glomerular regulation.
- Online access and additional data files provide comprehensive gene identification and cross-species homology information.
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