Cited by 226Cell death mechanisms and regulationMitochondrial Function and PathologyCardiac Ischemia and Reperfusion

The VDAC1 N-terminus is essential both for apoptosis and the protective effect of anti-apoptotic proteins

Abu-Hamad, Salah, Arbel, Nir, Calo, Doron, Arzoine, Laetitia, Israelson, Adrian, Keinan, Nurit, Ben-Romano, Ronit, Friedman, Orr +1 more·2009·Journal of Cell Science

Abstract

The release of mitochondrial-intermembrane-space pro-apoptotic proteins, such as cytochrome c, is a key step in initiating apoptosis. Our study addresses two major questions in apoptosis: how are mitochondrial pro-apoptotic proteins released and how is this process regulated? Accumulating evidence indicates that the voltage-dependent anion channel (VDAC) plays a central role in mitochondria-mediated apoptosis. Here, we demonstrate that the N-terminal domain of VDAC1 controls the release of cytochrome c, apoptosis and the regulation of apoptosis by anti-apoptotic proteins such as hexokinase and Bcl2. Cells expressing N-terminal truncated VDAC1 do not release cytochrome c and are resistant to apoptosis, induced by various stimuli. Employing a variety of experimental approaches, we show that hexokinase and Bcl2 confer protection against apoptosis through interaction with the VDAC1 N-terminal region. We also demonstrate that apoptosis induction is associated with VDAC oligomerization. These results show VDAC1 to be a component of the apoptosis machinery and offer new insight into the mechanism of cytochrome c release and how anti-apoptotic proteins regulate apoptosis and promote tumor cell survival.

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Crossref · 10.1242/jcs.040188

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  • The N-terminal domain of VDAC1 interacts with several Bcl-2 family proteins that regulate apoptosis and is involved in gating the channel.

    “The N-terminal domain of VDAC1 interacts with several Bcl-2 family proteins that regulate apoptosis and is involved in gating the channel [96,97,98,99,100,101].”

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Authors
Abu-Hamad, S., Arbel, N., Calo, D., Arzoine, L., Israelson, A., Keinan, N., Ben-Romano, R., Friedman, O., & Shoshan-Barmatz, V.
Affiliations
  • Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
  • Ben-Gurion University of the Negev (IL)
Venue
Journal of Cell Science
Published
2009-06-01
Volume
122
Issue
11
Pages
1906-1916
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W1989593508
Cited by
226
References
62
Citations by year
2026: 4 · 2025: 11 · 2024: 10 · 2023: 10 · 2022: 6 · 2021: 20 · 2020: 9 · 2019: 9 · 2018: 17 · 2017: 19 · 2016: 20 · 2015: 12 · 2014: 17 · 2013: 9 · 2012: 16
FWCI
7.08
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
Keywords
VDAC1, voltage-dependent anion channel, N-terminal domain, apoptosis, cytochrome c release, mitochondrial intermembrane space, hexokinase, Bcl-2, anti-apoptotic proteins, tumor cell survival, mitochondrial permeability transition
MeSH terms
Animals, Cell Line, Hexokinase, Humans, Mitochondria, Models, Molecular, Mutation, Peptides, Recombinant Fusion Proteins, Apoptosis, Proto-Oncogene Proteins c-bcl-2, Cytochromes c, Voltage-Dependent Anion Channel 1, Apoptosis Regulatory Proteins, Mice

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