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Changes in gene expression associated with FTO overexpression in mice.
Myrte Merkestein1, James S McTaggart1, Sheena Lee1
1Henry Wellcome Centre for Gene Function, Department of Physiology, Anatomy; and Genetics, University of Oxford, Parks Road, Oxford, United Kingdom.
Plos One
|May 21, 2014
Summary
Increased fat mass and obesity gene (FTO) expression in mice leads to obesity by promoting anabolic pathways and suppressing catabolic ones. This study investigated gene expression changes in FTO-overexpressing mice to understand obesity mechanisms.
Area of Science:
- Genetics
- Molecular Biology
- Obesity Research
Background:
- Single nucleotide polymorphisms in the FTO gene are linked to obesity.
- Overexpression of FTO in mice (FTO-4 mice) results in increased adiposity and hyperphagia.
- FTO functions as a demethylase targeting DNA and RNA, including m6A RNA modification, potentially regulating gene expression.
Purpose of the Study:
- To investigate gene expression alterations in FTO-4 mice.
- To elucidate the mechanisms by which FTO influences body weight and adiposity.
Main Methods:
- Analysis of gene expression in FTO-4 mice.
- Comparison of gene expression patterns between FTO-4 mice and controls.
Main Results:
- FTO-4 mice exhibit upregulation of anabolic pathways and downregulation of catabolic pathways.
- Differential regulation of methylation-related genes was observed in the skeletal muscle of FTO-4 mice.
- No significant effect of FTO overexpression on global m6A mRNA methylation was detected.
Conclusions:
- FTO overexpression promotes obesity by shifting metabolic pathways towards anabolism.
- While FTO influences methylation-related gene expression, its direct impact on global m6A mRNA methylation in this model requires further investigation.