Cited by 71Metabolism, Diabetes, and CancerRedox biology and oxidative stressBerberine and alkaloids research

RETRACTED: Redox Regulation of the AMP-Activated Protein Kinase

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Han, Yingying, Wang, Qilong, Song, Ping, Zhu, Yi, Zou, Ming-Hui·2010·PLoS ONE

Abstract

Redox state is a critical determinant of cell function, and any major imbalances can cause severe damage or death. Objectives: The aim of this study is to determine if AMP-activated protein kinase (AMPK), a cellular energy sensor, is activated by oxidants generated by Berberine in endothelial cells (EC). Methods: Bovine aortic endothelial cells (BAEC) were exposed to Berberine. AMPK activity and reactive oxygen species were monitored after the incubation. Results: In BAEC, Berberine caused a dose- and time-dependent increase in the phosphorylation of AMPK at Thr172 and acetyl CoA carboxylase (ACC) at Ser79, a well characterized downstream target of AMPK. Concomitantly, Berberine increased peroxynitrite, a potent oxidant formed by simultaneous generation of superoxide and nitric oxide. Pre-incubation of BAEC with anti-oxidants markedly attenuated Berberine-enhanced phosphorylation of both AMPK and ACC. Consistently, adenoviral expression of superoxide dismutase and pretreatment of L-N G -Nitroarginine methyl ester (L-NAME; a non-selective NOS inhibitor) blunted Berberine-induced phosphorylation of AMPK. Furthermore, mitochondria-targeted tempol (mito-tempol) pretreatment or expression of uncoupling protein attenuated AMPK activation caused by Berberine. Depletion of mitochondria abolished the effects of Berberine on AMPK in EC. Finally, Berberine significantly increased the phosphorylation of LKB1 at Ser307 and gene silencing of LKB1 attenuated Berberine-enhanced AMPK Thr172 phosphorylation in BAEC. Conclusion: Our results suggest that mitochondria-derived superoxide anions and peroxynitrite are required for Berberine-induced AMPK activation in endothelial cells.

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Crossref · 10.1371/journal.pone.0015420This paper is marked retracted.

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  • AMPK is responsive to imbalanced redox status.

    “Recent lines of evidence have demonstrated AMPK responsiveness to imbalanced redox status, thus bringing new insights into the networks of redox-stimulated signals upstream of AMPK (Table 1) [42,43,44,45,46,47,48,49,50,51].”

    From AMPK, Mitochondrial Function, and Cardiovascular Disease (2020) · cites this paper as [43]

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Authors
Han, Y., Wang, Q., Song, P., Zhu, Y., & Zou, M.-H.
Affiliations
  • Peking University (CN)
  • University of Oklahoma Health Sciences Center (US)
Corresponding author
Zou, Ming-Hui
Venue
PLoS ONE
Published
2010-11-05
Volume
5
Issue
11
Pages
e15420
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2023654927
Cited by
71
References
46
Citations by year
2026: 2 · 2025: 5 · 2024: 2 · 2021: 6 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 5 · 2016: 7 · 2015: 8 · 2014: 7 · 2013: 4 · 2012: 9
FWCI
2.61
Type
journal article
Language
en
Status
Retracted
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • American Diabetes Association (HL105157, HL080499, HL074399, HL079584, HL096032, HL089920)
  • American Heart Association
  • University of Oklahoma
  • National Natural Science Foundation of China
  • National Institutes of Health (HL080499, HL074399)
  • National Heart, Lung, and Blood Institute (HL-105157, R01HL105157, HL 079584, R01HL079584, HL-080499, HL096032, HL074399, R01HL074399, R01HL080499, HL-089920, R01HL110488, R01HL089920, R01HL096032)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Pharmacology › Berberine and alkaloids research
Keywords
AMPK, redox regulation, berberine, endothelial cells, reactive oxygen species, peroxynitrite, superoxide, acetyl-CoA carboxylase, LKB1, mitochondria, uncoupling proteins, superoxide dismutase, nitric oxide synthase inhibition, tempol
MeSH terms
Acetyl-CoA Carboxylase, Adenosine Monophosphate, Adenosine Triphosphate, Animals, Antioxidants, Berberine, Cattle, Cell Line, Cyclic N-Oxides, Electron Transport Complex IV, Enzyme Activation, Humans, Mitochondria, Oxidation-Reduction, Phosphorylation, Serine, Spin Labels, Superoxides, Superoxide Dismutase, Threonine, Time Factors, Blotting, Western, Reverse Transcriptase Polymerase Chain Reaction, Peroxynitrous Acid, Endothelial Cells, AMP-Activated Protein Kinases

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