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Gene expression in donor corneal endothelium.
John D Gottsch1, Gerami D Seitzman, Elliott H Margulies
1Center for Corneal Genetics, The Wilmer Eye Institute, The Johns Hopkins Hospital, 600 N Wolfe St, Baltimore, MD 21287, USA. jgottsch@jhmi.edu
Archives of Ophthalmology (Chicago, Ill. : 1960)
|February 14, 2003
Summary
This study profiles gene expression in normal human corneal endothelium using microarray and SAGE analyses. It provides a foundational understanding of endothelial function and identifies novel genes.
Area of Science:
- Ophthalmology
- Genomics
- Molecular Biology
Background:
- The human corneal endothelium is crucial for maintaining corneal clarity and function.
- Comprehensive gene expression data for normal corneal endothelium is limited.
Purpose of the Study:
- To generate detailed gene expression profiles of normal human corneal endothelium.
- To utilize microarray analysis and Serial Analysis of Gene Expression (SAGE) for comprehensive profiling.
- To establish a baseline for understanding endothelial biology and disease.
Main Methods:
- Corneal endothelium was isolated from normal human corneas.
- Total RNA was extracted for Serial Analysis of Gene Expression (SAGE) and microarray analysis.
- A complementary DNA library was hybridized to microarrays containing 12,558 transcripts.
Main Results:
- SAGE analysis yielded 4724 unique tags, with 1720 matching known genes.
- Microarray analysis identified 542 distinct transcripts.
- 34% of transcripts were specific to corneal endothelium, revealing key enzymes for pump function and novel genes.
Conclusions:
- Gene expression profiles enhance understanding of corneal endothelial metabolism, structure, and function.
- This data facilitates comparisons with diseased endothelium.
- Provides baseline data for potential discovery of novel endothelial genes.