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Updated: May 16, 2026
08:09
Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics
Published on: June 17, 2012
Association of genes with physiological functions by comparative analysis of pooled expression microarray data.
Iuan-bor D Chen1, Vinay K Rathi, Diana S DeAndrade
1Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA.
Physiological Genomics
|November 22, 2012
Summary
This study developed a gene expression database to identify tissue-specific genes and regulators. Researchers discovered novel functions for ESRRG and SREBF1 in regulating brown adipose tissue (BAT) gene expression in white adipocytes.
Area of Science:
- Genomics
- Systems Biology
- Bioinformatics
Background:
- Tissue function is dictated by gene expression patterns.
- Genes performing specific functions are expected to be highly expressed in relevant tissues.
- Understanding tissue-specific gene expression is crucial for deciphering physiological roles.
Purpose of the Study:
- To create a database of genes ranked by expression specificity across multiple organs.
- To identify transcriptional regulators of brown adipose tissue (BAT).
- To uncover novel functions of transcription factors in adipocyte differentiation and gene regulation.
Main Methods:
- Mining public microarray expression data to build a gene specificity database.
- Utilizing the database to predict and validate transcriptional regulators.
- Comparing gene expression profiles between white adipose tissue (WAT), BAT, heart, and other tissues.
Main Results:
- The database accurately identified tissue-specific genes and functions.
- Two candidate transcriptional regulators of BAT were validated.
- A novel role for estrogen-related receptor gamma (ESRRG) in inducing BAT genes in white adipocytes was discovered.
- An isoform of sterol regulatory element binding transcription factor 1 (SREBF1) was found to induce BAT markers in myocytes with ESRRG.
Conclusions:
- A straightforward bioinformatic strategy effectively associates genes with functions.
- The developed database serves as a resource for researchers investigating tissue-specific gene expression.
- ESRRG and SREBF1 play key roles in regulating brown adipose tissue characteristics, offering new insights into adipocyte biology.
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