Cited by 58Autophagy in Disease and TherapyLiver Disease Diagnosis and TreatmentEdible Oils Quality and Analysis

Oleuropein Induces AMPK-Dependent Autophagy in NAFLD Mice, Regardless of the Gender

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Porcu, Cristiana, Sideri, Silvia, Martini, Maurizio, Cocomazzi, Alessandra, Galli, Andrea, Tarantino, Giovanni, Balsano, Clara·2018·International Journal of Molecular Sciences

Abstract

Oleuropein (Ole) is one of the most plentiful phenolic compounds with antioxidant, anti-inflammatory, anti-atherogenic, hypoglycemic and hypolipidemic effects. The aim of our study was to establish whether the positive Ole-related effects on liver steatosis could be associated with autophagy. Female and male C57BL/6J mice were fed normal diet (ND) or high-fat diet (HFD) for eight weeks, and Ole was added or not for the following eight weeks. The autophagy-related proteins Akt, mTOR, AMPK, ULK1, Beclin-1, LC3B and p62/Sqstm1 were analyzed. Interestingly, Ole induced a different regulation of the Akt/mTOR pathway in female compared to male mice, but was able to activate the autophagic process in ND and HFD mice through AMPK-dependent phosphorylation of ULK1 at Ser555, regardless of the gender. Our work reveals the ability of Ole to induce, in liver of ND and HFD mice, autophagy independently by gender-specific mTOR activation. We highlight Ole as a novel therapeutic approach to counteract unhealthy diet-related liver steatosis by targeting autophagy.

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Crossref · 10.3390/ijms19123948

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  • Oleuropein promotes phosphorylation and activation of mitophagy-related proteins via the AMPK-ULK1 pathway in a diet-induced mouse model of obesity.

    “Finally, oleuropein, a polyphenol present in the leaves of fruits and olives, promotes phosphorylation and consequent activation of mitophagy-related proteins by activation of the AMPK–ULK1 pathway in a diet-induced mouse model of obesity235.”

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Authors
Porcu, C., Sideri, S., Martini, M., Cocomazzi, A., Galli, A., Tarantino, G., & Balsano, C.
Affiliations
  • University of L'Aquila (IT)
  • Università Cattolica del Sacro Cuore (IT)
  • University of Florence (IT)
  • Federico II University Hospital (IT)
Corresponding author
Balsano, Clara
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2018-12-08
Volume
19
Issue
12
Pages
3948
ISSN
1422-0067 (ISSN-L)
OpenAlex
W2904933936
Cited by
58
References
44
Citations by year
2026: 6 · 2025: 8 · 2024: 8 · 2023: 7 · 2022: 6 · 2021: 7 · 2020: 8 · 2019: 7
FWCI
4.29
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Florence Research (University of Florence) (submittedVersion, other-oa)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, other-oa)
  • Archivio Istituzionale della Ricerca - Università degli Studi dell Aquila (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Physical Sciences › Chemistry › Organic Chemistry › Edible Oils Quality and Analysis
Keywords
oleuropein, autophagy, non-alcoholic fatty liver disease, hepatic steatosis, AMPK, ULK1 phosphorylation, Akt/mTOR signaling, sex differences, high-fat diet, Beclin-1, LC3B, p62, phenolic compounds
MeSH terms
Autophagy-Related Protein-1 Homolog, Animals, Autophagy, Enzyme Activation, Female, Liver, Male, Mice, Inbred C57BL, Transcription, Genetic, Signal Transduction, Apoptosis, Proto-Oncogene Proteins c-bcl-2, Iridoids, Caspase 3, AMP-Activated Protein Kinases, Iridoid Glucosides, TOR Serine-Threonine Kinases, Diet, High-Fat, Non-alcoholic Fatty Liver Disease

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