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Mutations in mitochondrial DNA causing tubulointerstitial kidney disease

Connor, TM; Hoer, S; Mallett, A; Gale, DP; Gomez-Duran, A; Posse, V; Antrobus, R; ... Maxwell, PH; + view all (2017) Mutations in mitochondrial DNA causing tubulointerstitial kidney disease. PLOS Genetics , 13 (3) , Article e1006620. 10.1371/journal.pgen.1006620. Green open access

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Abstract

Tubulointerstitial kidney disease is an important cause of progressive renal failure whose aetiology is incompletely understood. We analysed a large pedigree with maternally inherited tubulointerstitial kidney disease and identified a homoplasmic substitution in the control region of the mitochondrial genome (m.547A>T). While mutations in mtDNA coding sequence are a well recognised cause of disease affecting multiple organs, mutations in the control region have never been shown to cause disease. Strikingly, our patients did not have classical features of mitochondrial disease. Patient fibroblasts showed reduced levels of mitochondrial tRNAPhe, tRNALeu1 and reduced mitochondrial protein translation and respiration. Mitochondrial transfer demonstrated mitochondrial transmission of the defect and in vitro assays showed reduced activity of the heavy strand promoter. We also identified further kindreds with the same phenotype carrying a homoplasmic mutation in mitochondrial tRNAPhe (m.616T>C). Thus mutations in mitochondrial DNA can cause maternally inherited renal disease, likely mediated through reduced function of mitochondrial tRNAPhe.

Type: Article
Title: Mutations in mitochondrial DNA causing tubulointerstitial kidney disease
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pgen.1006620
Publisher version: http://doi.org/10.1371/journal.pgen.1006620
Language: English
Additional information: © 2017 Connor et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine > Renal Medicine
URI: https://discovery.ucl.ac.uk/id/eprint/1545215
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