Metabolic syndrome is a growing concern in developed societies and due to its polygenic nature, the genetic component is only slowly being elucidated. Common mitochondrial DNA sequence variants have been associated with symptoms of metabolic syndrome and may, therefore, be relevant players in the genetics of metabolic syndrome. We investigate the effect of mitochondrial sequence variation on the metabolic phenotype in conplastic rat strains with identical nuclear but unique mitochondrial genomes, challenged by high-fat diet. We find that the variation in mitochondrial rRNA sequence represents risk factor in the insulin resistance development, which is associated with diacylglycerols accumulation, induced by tissue-specific reduction of the oxidative capacity. These metabolic perturbations stem from the 12S rRNA sequence variation affecting mitochondrial ribosome assembly and translation. Our work demonstrates that physiological variation in mitochondrial rRNA might represent a relevant underlying factor in the progression of metabolic syndrome.

• MeSH
• dieta s vysokým obsahem tuků škodlivé účinky   MeSH
• genetická predispozice k nemoci MeSH
• haplotypy * MeSH
• inzulinová rezistence genetika   MeSH
• krysa rodu rattus MeSH
• metabolický syndrom * genetika   metabolismus   MeSH
• mitochondriální DNA genetika   metabolismus   MeSH
• mitochondrie metabolismus   genetika   MeSH
• RNA mitochondriální genetika   metabolismus   MeSH
• RNA ribozomální * genetika   metabolismus   MeSH
• zvířata MeSH
• Check Tag
• krysa rodu rattus MeSH
• mužské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH