Cited by 194Redox biology and oxidative stressMitochondrial Function and PathologyCell death mechanisms and regulation

Mitochondrial c-Jun N-terminal Kinase (JNK) Signaling Initiates Physiological Changes Resulting in Amplification of Reactive Oxygen Species Generation

Open access
Chambers, Jeremy W., LoGrasso, Philip V.·2011·Journal of Biological Chemistry

Abstract

The JNK signaling cascade is critical for cellular responses to a variety of environmental and cellular stimuli. Although gene expression aspects of JNK signal transduction are well studied, there are minimal data on the physiological impact of JNK signaling. To bridge this gap, we investigated how JNK impacted physiology in HeLa cells. We observed that inhibition of JNK activity and JNK silencing with siRNA reduced the level of reactive oxygen species (ROS) generated during anisomycin-induced stress in HeLa cells. Silencing p38 had no significant impact on ROS generation under anisomycin stress. Moreover, JNK signaling mediated amplification of ROS production during stress. Mitochondrial superoxide production was shown to be the source of JNK-induced ROS amplification, as an NADPH oxidase inhibitor demonstrated little impact on JNK-mediated ROS generation. Using mitochondrial isolation from JNK null fibroblasts and targeting the mitochondrial scaffold of JNK, Sab, we demonstrated that mitochondrial JNK signaling was responsible for mitochondrial superoxide amplification. These results suggest that cellular stress altered mitochondria, causing JNK to translocate to the mitochondria and amplify up to 80% of the ROS generated largely by Complex I. This work demonstrates that a sequence of events exist for JNK mitochondrial signaling whereby ROS activates JNK, thereby affecting mitochondrial physiology, which can have effects on cell survival and death.

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 · 10.1074/jbc.m111.223602

Cites

50 of 50 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?

  • Targeting JNK to mitochondria results in a significant increase in oxidants generated by complex I.

    “Furthermore, targeting of JNK to the mitochondria resulted in a significant increase in oxidants generated by complex I (67).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [67]

  • Translocation of JNK to mitochondria is essential for cytochrome c release and apoptosis downstream of other stress activators.

    “other studies have shown that translocation of JNK to the mitochondria was essential for cytochrome c release and apoptosis downstream of other stress activators (67, 189).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [67]

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

Research works printed but not linked: 1

  1. Wiltshire, C., Gillespie, D. A., and May, G. H. (2004) Biochem. Soc. Trans. 32, 1075-1077

Cited by

Sorted by citations

Authors
Chambers, J. W., & LoGrasso, P. V.
Affiliations
Scripps Research Institute (US)
Corresponding author
LoGrasso, Philip V.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2011-05
Volume
286
Issue
18
Pages
16052-16062
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2032947455
Cited by
194
References
50
Citations by year
2026: 8 · 2025: 10 · 2024: 16 · 2023: 7 · 2022: 11 · 2021: 14 · 2020: 14 · 2019: 22 · 2018: 15 · 2017: 14 · 2016: 14 · 2015: 13 · 2014: 14 · 2013: 10 · 2012: 7
FWCI
4.55
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (U01NS057153)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
JNK signaling, reactive oxygen species, mitochondrial superoxide, p38 MAPK, mitochondrial complex I, mitochondrial translocation, NADPH oxidase, HeLa cells, cell survival and death
MeSH terms
Animals, Anisomycin, Fibroblasts, Humans, Protein Synthesis Inhibitors, Signal Transduction, Reactive Oxygen Species, Mice, Knockout, NADPH Oxidases, Mitochondrial Proteins, Electron Transport Complex I, JNK Mitogen-Activated Protein Kinases, 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