Cited by 236PI3K/AKT/mTOR signaling in cancerRedox biology and oxidative stressAutophagy in Disease and Therapy

Hydrogen peroxide inhibits mTOR signaling by activation of AMPKα leading to apoptosis of neuronal cells

Open access
Chen, Long, Xu, Baoshan, Liu, Lei, Luo, Yan, Yin, Jun, Zhou, Hongyu, Chen, Wenxing, Shen, Tao +2 more·2010·Laboratory Investigation

Abstract

Oxidative stress results in apoptosis of neuronal cells, leading to neurodegenerative disorders. However, the underlying molecular mechanism remains to be elucidated. Here, we show that hydrogen peroxide (H(2)O(2)), a major oxidant generated when oxidative stress occurs, induced apoptosis of neuronal cells (PC12 cells and primary murine neurons), by inhibiting the mammalian target of rapamycin (mTOR)-mediated phosphorylation of ribosomal p70 S6 kinase (S6K1) and eukaryotic initiation factor 4E (eIF4E)-binding protein 1 (4E-BP1). N-acetyl-L-cysteine (NAC), a scavenger of reactive oxygen species (ROS), blocked H(2)O(2) inhibition of mTOR signaling. Ectopic expression of wild-type (wt) mTOR, constitutively active S6K1 or downregulation of 4E-BP1 partially prevented H(2)O(2) induction of apoptosis. Furthermore, we identified that H(2)O(2) induction of ROS inhibited the upstream kinases, Akt and phosphoinositide-dependent kinase 1 (PDK1), but not the type I insulin-like growth factor receptor (IGFR), and activated the negative regulator, AMP-activated protein kinase alpha (AMPKalpha), but not the phosphatase and tensin homolog (PTEN) in the cells. Expression of a dominant negative AMPKalpha or downregulation of AMPKalpha1 conferred partial resistance to H(2)O(2) inhibition of phosphorylation of S6K1 and 4E-BP1, as well as cell viability, indicating that H(2)O(2) inhibition of mTOR signaling is at least in part through activation of AMPK. Our findings suggest that AMPK inhibitors may be exploited for prevention of H(2)O(2)-induced neurodegenerative diseases.

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 · 10.1038/labinvest.2010.36

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?

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

3 of the 49 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Chen, L., Xu, B., Liu, L., Luo, Y., Yin, J., Zhou, H., Chen, W., Shen, T., Han, X., & Huang, S.
Affiliations
  • Louisiana State University Health Sciences Center Shreveport (US)
  • Feist-Weiller Cancer Center (US)
Corresponding author
Huang, Shile
Venue
Laboratory Investigation
Publisher
Elsevier BV
Published
2010-05
Volume
90
Issue
5
Pages
762-773
ISSN
0023-6837 (ISSN-L)
OpenAlex
W2062195516
Cited by
236
References
49
Citations by year
2026: 6 · 2025: 9 · 2024: 11 · 2023: 8 · 2022: 10 · 2021: 16 · 2020: 16 · 2019: 11 · 2018: 17 · 2017: 18 · 2016: 19 · 2015: 17 · 2014: 20 · 2013: 21 · 2012: 15
FWCI
7.55
Type
journal article
Language
en
Open access
Locations
  • Laboratory Investigation (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation
  • Louisiana State University
  • National Institutes of Health
  • National Cancer Institute (R01CA115414, CA115414)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
hydrogen peroxide, mTOR signaling, AMPKα, neuronal apoptosis, oxidative stress, S6K1 phosphorylation, 4E-BP1, reactive oxygen species, Akt, PDK1, neurodegenerative diseases, N-acetylcysteine, PC12 cells, primary neurons
MeSH terms
Animals, Cell Line, Cells, Cultured, Enzyme Activation, Humans, Hydrogen Peroxide, Neurons, Phosphoproteins, Phosphorylation, Blotting, Western, Signal Transduction, PC12 Cells, Oxidants, Apoptosis, Protein Serine-Threonine Kinases, Reactive Oxygen Species, Ribosomal Protein S6 Kinases, RNA Interference, Cell Line, Tumor, Intracellular Signaling Peptides and Proteins, Mice, Rats, AMP-Activated Protein Kinases, TOR Serine-Threonine Kinases

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