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Adipose tissue transcriptome by serial analysis of gene expression.

Carl Bolduc¹, Marianne Larose, Nicolas Lafond

¹Molecular Endocrinology and Oncology Research Center, Laval Univerisity Medical Center and Laval University, Quebec, Canada.

Obesity Research

|May 29, 2004

Summary

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This study provides the first quantitative description of the adipose tissue transcriptome using serial analysis of gene expression. Researchers identified over 17,000 genes, revealing key expressed genes in this vital metabolic tissue.

Area of Science:

Molecular Biology
Genomics
Metabolic Research

Background:

Adipose tissue plays a crucial role in metabolic homeostasis.
Understanding the gene expression profile of adipose tissue is essential for metabolic research.

Purpose of the Study:

To characterize the complete transcriptome of adipose tissue.
To provide a quantitative analysis of gene expression in adipose tissue using serial analysis of gene expression (SAGE).

Main Methods:

Utilized serial analysis of gene expression (SAGE) on mRNA from retroperitoneal adipose tissue of male C57BL6 mice.
Isolated and sequenced short gene tags to identify and quantify transcripts.
Concatenated tags into long DNA molecules for cloning and sequencing.

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Main Results:

Identified 45,996 tags representing over 17,000 unique genes.
Eighty-eight genes constituted 26% of the mRNA population, with carbonic anhydrase 3 and cytochrome c oxidase subunits being highly expressed.
Detected several novel transcripts alongside known adipose tissue genes like fatty acid-binding protein 4 and uncoupling protein 2.

Conclusions:

This study presents the first quantitative description of the adipose tissue transcriptome.
The findings offer a comprehensive overview of gene expression in adipose tissue, crucial for understanding metabolic functions.