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- W2893961844 abstract "Mitochondrial myopathy (MM) is characterised by muscle weakness, exercise intolerance and various histopathological changes. Recently, a subset of MM has also been associated with aberrant activation of mammalian target of rapamycin complex 1 (mTORC1) in skeletal muscle. This aberrant mTORC1 activation promotes increased de novo nucleotide synthesis, which contributes to abnormal expansion and imbalance of skeletal muscle deoxyribonucleoside triphosphates (dNTP) pools. However, the exact mechanism via which mTORC1-stimulated de novo nucleotide biosynthesis ultimately disturbs muscle dNTP pools remains unclear. In this article, it is proposed that mTORC1-stimulated de novo nucleotide synthesis in skeletal muscle cells with respiratory chain dysfunction promotes an asymmetric increase of purine nucleotides, probably due to NAD+ deficiency. This in turn could disrupt purine nucleotide-dependent allosteric feedback regulatory mechanisms, ultimately leading to dNTP pools aberration. Pharmacological down-modulation of aminoimidazole carboxamide ribonucleotide transformylase/inosine monophosphate cyclohydrolase (ATIC) activity is also proposed as a potential therapeutic strategy in MM exhibiting mTORC1-driven abnormal metabolic reprogramming, including aberrant dNTPs pools." @default.
- W2893961844 created "2018-10-05" @default.
- W2893961844 creator A5067920493 @default.
- W2893961844 date "2018-12-01" @default.
- W2893961844 modified "2023-09-25" @default.
- W2893961844 title "Modulation of the de novo purine nucleotide pathway as a therapeutic strategy in mitochondrial myopathy" @default.
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- W2893961844 doi "https://doi.org/10.1016/j.phrs.2018.09.027" @default.
- W2893961844 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30267763" @default.
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