Cited by 127Mitochondrial Function and PathologyMetabolism, Diabetes, and CancerAutophagy in Disease and Therapy

Targeted disruption of hepatic frataxin expression causes impaired mitochondrial function, decreased life span and tumor growth in mice

Thierbach, René, Schulz, Tim J., Isken, Frank, Voigt, Anja, Mietzner, Brun, Drewes, Gunnar, von Kleist-Retzow, Jürgen-Christoph, Wiesner, Rudolf J. +5 more·2005·Human Molecular Genetics

Abstract

We have disrupted expression of the mitochondrial Friedreich ataxia protein frataxin specifically in murine hepatocytes to generate mice with impaired mitochondrial function and decreased oxidative phosphorylation. These animals have a reduced life span and develop multiple hepatic tumors. Livers also show increased oxidative stress, impaired respiration and reduced ATP levels paralleled by reduced activity of iron-sulfur cluster (Fe/S) containing proteins (ISP), which all leads to increased hepatocyte turnover by promoting both apoptosis and proliferation. Accordingly, phosphorylation of the stress-inducible p38 MAP kinase was found to be specifically impaired following disruption of frataxin. Taken together, these findings indicate that frataxin may act as a mitochondrial tumor suppressor protein in mammals.

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Crossref · 10.1093/hmg/ddi410

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Authors
Thierbach, R., Schulz, T. J., Isken, F., Voigt, A., Mietzner, B., Drewes, G., von Kleist-Retzow, J.-C., Wiesner, R. J., Magnuson, M. A., Puccio, H., Pfeiffer, A. F. H., Steinberg, P., & Ristow, M.
Affiliations
  • German Institute of Human Nutrition (DE)
  • Institut de génétique et de biologie moléculaire et cellulaire (FR)
Corresponding author
Thierbach, René
Venue
Human Molecular Genetics
Published
2005-11-08
Volume
14
Issue
24
Pages
3857-3864
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2148930297
Cited by
127
References
53
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 4 · 2016: 4 · 2015: 4 · 2014: 2 · 2013: 9 · 2012: 10
FWCI
5.24
Type
journal article
Language
en
Open access
closed
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • publish.UP (University of Potsdam) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
frataxin, Friedreich's ataxia, hepatocytes, mitochondrial dysfunction, oxidative phosphorylation, oxidative stress, iron-sulfur proteins, tumor suppressor, hepatocellular tumors, lifespan, p38 MAPK, apoptosis, hepatocyte proliferation, ATP levels, mitochondrial respiration
MeSH terms
Frataxin, Animals, Iron-Sulfur Proteins, Liver, Liver Neoplasms, Longevity, Mice, Inbred C57BL, Mitochondria, Phosphorylation, Apoptosis, Reactive Oxygen Species, Mice, Knockout, Oxidative Stress, Hepatocytes, Iron-Binding Proteins, p38 Mitogen-Activated Protein Kinases, Cell Proliferation, Mice

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