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TMEM70 mutations cause isolated ATP synthase deficiency and neonatal mitochondrial encephalocardiomyopathy

Nature Genetics volume 40, pages 1288–1290 (2008)Cite this article

Abstract

We carried out whole-genome homozygosity mapping, gene expression analysis and DNA sequencing in individuals with isolated mitochondrial ATP synthase deficiency and identified disease-causing mutations in TMEM70. Complementation of the cell lines of these individuals with wild-type TMEM70 restored biogenesis and metabolic function of the enzyme complex. Our results show that TMEM70 is involved in mitochondrial ATP synthase biogenesis in higher eukaryotes.

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Figure 1: Positional cloning of TMEM70.
Figure 2: TMEM70 complementation of ATP synthase deficiency.

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Acknowledgements

This study was supported by grants from Ministry of Education of Czech Republic (1M6837805002, AV0Z 50110509, MSM0021620806, Kontakt 14/2006), GAČR (305/08/H037), OeNB 12568, Päd. Forschungsverein and PMU Salzburg (06/04/022). We thank R.Gallyová, Š.Rosipal, V.Smolka, A.Hlavatá, P.Freisinger, M.Huemer and O.Bodamer, who provided samples from affected individuals for this study, and D. Seelow for bioinformatic support.

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Authors and Affiliations

  1. Institute of Inherited Metabolic Disorders, Charles University of Prague, First Faculty of Medicine, Prague, 12808, Czech Republic

    Alena Čížková, Viktor Stránecký, Robert Ivánek, Hana Hartmannová, Lenka Nosková & Stanislav Kmoch

  2. Department of Bioenergetics, Institute of Physiology, Academy of Science of the Czech Republic, Prague, 14220, Czech Republic

    Alena Čížková, Vendula Havlíčková, Jan Paul, Vilma Kaplanová, Marek Vrbacký, Zdeněk Drahota, Kateřina Hejzlarová & Josef Houštěk

  3. Department of Pediatrics, Paracelsus Medical University, Salzburg, A5020, Austria

    Johannes A Mayr & Wolfgang Sperl

  4. Department of Pediatrics, Charles University of Prague, First Faculty of Medicine, Prague, 12808, Czech Republic

    Markéta Tesařová, Hana Hansíková, Tomáš Honzík, Martin Magner & Jiří Zeman

  5. Max Planck Institute for Molecular Genetics, 14195, Berlin, Germany

    Andreas W Kuss

Authors
  1. Alena Čížková
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  21. Stanislav Kmoch
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Contributions

A.C., H.Hartmannová and L.N. carried out DNA and gene expression analysis and TMEM70 cloning. V.S. and R.I. were responsible for genotyping, gene expression analysis and bioinformatics. J.A.M. carried out biochemical diagnosis and DNA analysis. A.W.K. did genotyping and homozygosity mapping. M.T. and H.Hansíková carried out biochemical diagnosis, cell culturing and transfections. V.H., J.P. and V.K. carried out transfections, complementation studies, ELFO/WB analysis and bioinformatics. M.V., Z.D. and K.H. were responsible for functional studies. T.H. and M.M. were responsible for family ascertainment and sample collection, and J.Z. and W.S. handled diagnosis and clinical characterization. S.K. and J.H. initiated and coordinated the study and wrote the manuscript.

Corresponding authors

Correspondence to Josef Houštěk or Stanislav Kmoch.

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Supplementary Figures 1–5, Supplementary Tables 1 and 2, Supplementary Methods (PDF 272 kb)

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Čížková, A., Stránecký, V., Mayr, J. et al. TMEM70 mutations cause isolated ATP synthase deficiency and neonatal mitochondrial encephalocardiomyopathy. Nat Genet 40, 1288–1290 (2008). https://doi.org/10.1038/ng.246

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