Cited by 109Cell death mechanisms and regulationIon Channels and ReceptorsT-cell and B-cell Immunology

The Proapoptotic Factors Bax and Bak Regulate T Cell Proliferation through Control of Endoplasmic Reticulum Ca2+ Homeostasis

Open access
Jones, Russell G., Bui, Thi, White, Carl, Madesh, Muniswamy, Krawczyk, Connie M., Lindsten, Tullia, Hawkins, Brian J., Kubek, Sara +8 more·2007·Immunity

Abstract

The Bcl-2-associated X protein (Bax) and Bcl-2-antagonist/killer (Bak) are essential regulators of lymphocyte apoptosis, but whether they play a role in viable T cell function remains unclear. Here, we report that T cells lacking both Bax and Bak display defects in antigen-specific proliferation because of Ca(2+)-signaling defects. Bax(-/-), Bak(-/-) T cells displayed defective T cell receptor (TCR)- and inositol-1,4,5-trisphosphate (IP(3))-dependent Ca(2+) mobilization because of altered endoplasmic reticulum (ER) Ca(2+) regulation that was reversed by Bax's reintroduction. The ability of TCR-dependent Ca(2+) signals to stimulate mitochondrial NADH production in excess of that utilized for ATP synthesis was dependent on Bax and Bak. Blunting of Ca(2+)-induced mitochondrial NADH elevation in the absence of Bax and Bak resulted in decreased reactive-oxygen-species production, which was required for T cell proliferation. Together, the data establish that Bax and Bak play an essential role in the control of T cell proliferation by modulating ER Ca(2+) release.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.immuni.2007.05.023

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Restoring Ca2+ signals in Bax/Bak-null T cells restores mitochondrial ROS production and T cell proliferation.

    “Restoring Ca2+ signals in Bax/Bak-null T cells restores mitochondrial ROS production and T cell proliferation (33).”
  • T cells lacking Bax and Bak exhibit reduced Ca2+-dependent mitochondrial ROS production and T cell proliferation after TCR stimulation.

    “T cells lacking the apoptosis regulators Bax and Bak, which display defects in intracellular Ca2+ homeostasis, exhibit reduced Ca2+-dependent mitochondrial ROS production and T cell proliferation after TCR stimulation (33).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Jones, R. G., Bui, T., White, C., Madesh, M., Krawczyk, C. M., Lindsten, T., Hawkins, B. J., Kubek, S., Frauwirth, K. A., Wang, Y. L., Conway, S. J., Roderick, H. L., Bootman, M. D., Shen, H., Foskett, J. K., & Thompson, C. B.
Affiliations
  • University of Pennsylvania (US)
  • University of Maryland, College Park (US)
  • Cornell University (US)
  • Babraham Institute (GB)
Corresponding author
Thompson, Craig B.
Venue
Immunity
Publisher
Elsevier BV
Published
2007-08
Volume
27
Issue
2
Pages
268-280
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2090734911
Cited by
109
References
46
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 5 · 2018: 5 · 2017: 1 · 2016: 2 · 2015: 5 · 2014: 7 · 2013: 12 · 2012: 11
FWCI
4.06
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Open Research Online (The Open University) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Lirias (submittedVersion, other-oa)
Funders
  • Cancer Research Institute
  • National Institutes of Health
  • Biotechnology and Biological Sciences Research Council (BBS/E/B/0000C116, BBS/E/B/00001116, BBS/E/B/0000H110)
  • National Cancer Institute (R01CA099179)
  • National Institute of General Medical Sciences (R01GM056328)
  • Abramson Family Cancer Research Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
Bax, Bak, Bcl-2 family proteins, T cell proliferation, endoplasmic reticulum calcium homeostasis, calcium signaling, T cell receptor signaling, inositol trisphosphate, mitochondrial NADH, reactive oxygen species, apoptosis, T cell function
MeSH terms
Adenosine Triphosphate, Animals, Calcium, Endoplasmic Reticulum, Energy Metabolism, Homeostasis, Mice, Mutant Strains, Mitochondria, NAD, Receptors, Antigen, T-Cell, T-Lymphocytes, Inositol 1,4,5-Trisphosphate, Apoptosis, Reactive Oxygen Species, Calcium Signaling, Cell Proliferation, bcl-2 Homologous Antagonist-Killer Protein, bcl-2-Associated X Protein, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review