Cited by 47Mitochondrial Function and PathologyCancer, Lipids, and MetabolismLipid Membrane Structure and Behavior

The voltage dependent anion channel affects mitochondrial cholesterol distribution and function

Campbell, Andrew M., Chan, Samuel H.P.·2007·Archives of Biochemistry and Biophysics

Abstract

We have observed abnormally high membrane cholesterol levels and a subsequent deficiency of oxidative energy production in mitochondria from cultured Morris hepatoma cells (MH7777). Using cholesterol affinity chromatography and MALDI-TOF Mass Spectrometry, we have identified the voltage dependent anion channel (VDAC) as a necessary component of a protein complex involved in mitochondrial membrane cholesterol distribution. VDAC is known to associate strongly with hexokinase, particularly in glycolytic cancers. By constructing an E72Q mutant form of VDAC that inhibits its binding of hexokinase, we report an increase in oxidative phosphorylation activity of MH7777 cells, as well as reduced membrane cholesterol ratios to levels near that of normal liver mitochondria. This paper demonstrates that the ability of VDAC to influence mitochondrial membrane cholesterol distribution may have implications on mitochondrial characteristics such as oxidative phosphorylation and induction of apoptosis, as well as the propensity of cancer cells to exhibit a glycolytic phenotype.

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Crossref · 10.1016/j.abb.2007.06.012

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Authors
Campbell, A. M., & Chan, S. H. P.
Affiliations
Syracuse University (US)
Corresponding author
  • Campbell, Andrew M.
  • Chan, Samuel H.P.
Venue
Archives of Biochemistry and Biophysics
Publisher
Elsevier BV
Published
2007-10
Volume
466
Issue
2
Pages
203-210
ISSN
0003-9861 (ISSN-L)
OpenAlex
W2072887098
Cited by
47
References
54
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2022: 1 · 2021: 3 · 2020: 2 · 2018: 2 · 2017: 7 · 2016: 3 · 2015: 1 · 2014: 6 · 2013: 3 · 2012: 4
FWCI
1.19
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Biochemistry and Biophysics (publishedVersion)
  • PubMed (publishedVersion)
  • Syracuse University Libraries (Syracuse University) (submittedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (CA-20454)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Lipid Membrane Structure and Behavior
Keywords
voltage-dependent anion channel, cholesterol distribution, oxidative phosphorylation, hexokinase, glycolytic phenotype, cancer metabolism, apoptosis, mitochondrial protein complexes
MeSH terms
Animals, Cholesterol, Hexokinase, Male, Mitochondria, Liver, Mitochondrial Swelling, Mutation, Oxidative Phosphorylation, Signal Transduction, Rats, Sprague-Dawley, Apoptosis, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Cell Line, Tumor, Voltage-Dependent Anion Channels, Rats, Membrane Potential, Mitochondrial

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