Metabolic shift underlies recovery in reversible infantile respiratory chain deficiency
| العنوان: | Metabolic shift underlies recovery in reversible infantile respiratory chain deficiency |
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| المؤلفون: | Michio Hirano, Mamta Giri, Ana Cotta, Hanns Lochmüller, Angela Pyle, Julia Filardi Paim, Matthew J. Jennings, Veronika Boczonadi, Jennifer Duff, Andreas Roos, Helen Griffin, Vamsi K. Mootha, Aurora Gomez-Duran, Adela Della Marina, Eric P Hoffmann, Joanna Poulton, Michael G. Hanna, Robert D S Pitceathly, Kristine Chapman, Juliane S Müller, Kairit Joost, Denisa Hathazi, Claudia Calabrese, Benjamin Munro, Sarah F Pearce, Salvatore DiMauro, Monica Machado Navarro, Michal Minczuk, Mar Tulinius, Wei Wei, Serenella Servidei, Michele Giunta, Christopher A. Powell, Johanna Uusimaa, Rita Horvath, Andre Mattman, Patrick F. Chinnery, Ulrike Schara |
| المساهمون: | Powell, Christopher [0000-0001-7501-0586], Joost, Kairit [0000-0003-2544-3230], Minczuk, Michal [0000-0001-8242-1420], Chinnery, Patrick F [0000-0002-7065-6617], Horvath, Rita [0000-0002-9841-170X], Apollo - University of Cambridge Repository |
| المصدر: | The EMBO Journal |
| بيانات النشر: | John Wiley and Sons Inc., 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Male, Proteomics, reversible infantile respiratory chain deficiency, Mitochondrial Diseases, Medizin, Gene Expression, medicine.disease_cause, igenic inheritance, digenic inheritance, Quadriceps Muscle, 0302 clinical medicine, Mitochondrial myopathy, Membrane & Intracellular Transport, 0303 health sciences, Mutation, tRNA Methyltransferases, General Neuroscience, Mitochondrial Myopathies, Articles, Digenic inheritance, Penetrance, 3. Good health, Mitochondria, Pedigree, homoplasmic tRNA mutation, Female, medicine.medical_specialty, Mitochondrial DNA, Adolescent, Mitochondrial disease, Biology, DNA, Mitochondrial, General Biochemistry, Genetics and Molecular Biology, Article, Cell Line, Mitochondrial Proteins, 03 medical and health sciences, Lipid oxidation, Internal medicine, medicine, Humans, Molecular Biology, 030304 developmental biology, General Immunology and Microbiology, mitochondrial myopathy, Infant, medicine.disease, Endocrinology, Metabolism, Mitochondrial biogenesis, 030217 neurology & neurosurgery |
| الوصف: | Reversible infantile respiratory chain deficiency (RIRCD) is a rare mitochondrial myopathy leading to severe metabolic disturbances in infants, which recover spontaneously after 6‐months of age. RIRCD is associated with the homoplasmic m.14674T>C mitochondrial DNA mutation; however, only ~ 1/100 carriers develop the disease. We studied 27 affected and 15 unaffected individuals from 19 families and found additional heterozygous mutations in nuclear genes interacting with mt‐tRNAGlu including EARS2 and TRMU in the majority of affected individuals, but not in healthy carriers of m.14674T>C, supporting a digenic inheritance. Our transcriptomic and proteomic analysis of patient muscle suggests a stepwise mechanism where first, the integrated stress response associated with increased FGF21 and GDF15 expression enhances the metabolism modulated by serine biosynthesis, one carbon metabolism, TCA lipid oxidation and amino acid availability, while in the second step mTOR activation leads to increased mitochondrial biogenesis. Our data suggest that the spontaneous recovery in infants with digenic mutations may be modulated by the above described changes. Similar mechanisms may explain the variable penetrance and tissue specificity of other mtDNA mutations and highlight the potential role of amino acids in improving mitochondrial disease. Heterozygous mutations in nuclear genes interacting with mt‐tRNAGlu induce the integrated stress response and metabolic rearrangements, reducing penetrance and promoting spontaneous recovery in a rare mitochondrial myopathy. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1460-2075 0261-4189 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7702b627553ef1fc91f44444ca1ad45dTest http://europepmc.org/articles/PMC7705457Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7702b627553ef1fc91f44444ca1ad45d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14602075 02614189 |
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