Cited by 1,185Cell death mechanisms and regulationMitochondrial Function and PathologyAutophagy in Disease and Therapy

BH3 Domains of BH3-Only Proteins Differentially Regulate Bax-Mediated Mitochondrial Membrane Permeabilization Both Directly and Indirectly

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Kuwana, Tomomi, Bouchier-Hayes, Lisa, Chipuk, Jerry E., Bonzon, Christine, Sullivan, Barbara A., Green, Douglas R., Newmeyer, Donald D.·2005·Molecular Cell

Abstract

Using a Bax-dependent membrane-permeabilization assay, we show that peptides corresponding to the BH3 domains of Bcl-2 family "BH3-only" proteins have dual functions. Several BH3 peptides relieved the inhibition of Bax caused by the antiapoptotic Bcl-x(L) and/or Mcl-1 proteins, some displaying a specificity for either Bcl-x(L) or Mcl-1. Besides having this derepression function, the Bid and Bim peptides activated Bax directly and were the only BH3 peptides tested that could potently induce cytochrome c release from mitochondria in cultured cells. Furthermore, Bax activator molecules (cleaved Bid protein and the Bim BH3 peptide) synergistically induced cytochrome c release when introduced into cells along with derepressor BH3 peptides. These observations support a unified model of BH3 domain function, encompassing both positive and negative regulation of other Bcl-2 family members. In this model, the simple inhibition of antiapoptotic functions is insufficient to induce apoptosis unless a direct activator of Bax or Bak is present.

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Crossref · 10.1016/j.molcel.2005.02.003

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  • Upon induction of apoptosis, BAX retrotranslocation ceases as the mitochondrial pools of BAX and BAK undergo direct or indirect activation by pro-apoptotic BH3-only proteins.

    “Upon induction of apoptosis, BAX retrotranslocation ceases as the mitochondrial pools of BAX and BAK undergo direct or indirect activation (see below) by pro-apoptotic BH3-only proteins [48, 56–59].”

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Authors
Kuwana, T., Bouchier-Hayes, L., Chipuk, J. E., Bonzon, C., Sullivan, B. A., Green, D. R., & Newmeyer, D. D.
Affiliations
La Jolla Institute for Immunology (US)
Corresponding author
  • Kuwana, Tomomi
  • Newmeyer, Donald D.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2005-02
Volume
17
Issue
4
Pages
525-535
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2094052642
Cited by
1,185
References
36
Citations by year
2026: 10 · 2025: 18 · 2024: 16 · 2023: 28 · 2022: 25 · 2021: 37 · 2020: 45 · 2019: 42 · 2018: 40 · 2017: 44 · 2016: 57 · 2015: 56 · 2014: 57 · 2013: 76 · 2012: 75
FWCI
38.79
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (R21AG024157)
  • National Cancer Institute (CA 69381, P01CA069381)
  • National Institute of General Medical Sciences (GM50284, R01GM050284, R01GM062289, GM62289)
  • National Institute of Allergy and Infectious Diseases (R01AI040646, AI40646)
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 › Epidemiology › Autophagy in Disease and Therapy
Keywords
BH3 domain, BH3-only proteins, Bax, mitochondrial membrane permeabilization, Bcl-2 family proteins, Bcl-xL, Mcl-1, Bid, building information modeling, cytochrome c release, apoptosis, Bax activation, anti-apoptotic proteins, Bak
MeSH terms
Bcl-2-Like Protein 11, Amino Acid Sequence, Carrier Proteins, HeLa Cells, Humans, Intracellular Membranes, Membrane Proteins, Mitochondria, Molecular Sequence Data, Neoplasm Proteins, Peptide Fragments, Permeability, Proto-Oncogene Proteins, Apoptosis, Sequence Homology, Amino Acid, Protein Structure, Tertiary, Proto-Oncogene Proteins c-bcl-2, Mitochondrial Proteins, Cytochromes c, Apoptosis Regulatory Proteins, bcl-X Protein, BH3 Interacting Domain Death Agonist Protein, bcl-2-Associated X Protein, Myeloid Cell Leukemia Sequence 1 Protein

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