Cited by 94Telomeres, Telomerase, and SenescenceAdipose Tissue and MetabolismSirtuins and Resveratrol in Medicine

Senolytic effects of quercetin in an in vitro model of pre-adipocytes and adipocytes induced senescence

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Zoico, Elena, Nori, Nicole, Darra, Elena, Tebon, Maela, Rizzatti, Vanni, Policastro, Gabriella, De Caro, Annamaria, Rossi, Andrea Petronio +2 more·2021·Scientific Reports

Abstract

The dysfunction of adipose tissue with aging and the accumulation of senescent cells has been implicated in the pathophysiology of chronic diseases. Recently interventions capable of reducing the burden of senescent cells and in particular the identification of a new class of drugs termed senolytics have been object of extensive investigation. We used an in vitro model of induced senescence by treating both pre-adipocytes as well as mature adipocytes with hydrogen peroxide (H 2 O 2 ) at a sub-lethal concentration for 3 h for three consecutive days, and hereafter with 20 uM quercetin at a dose that in preliminary experiments resulted to be senolytic without cytotoxicity. H 2 O 2 treated pre-adipocytes and adipocytes showed typical senescence-associated features including increased beta-galactosidase activity (SA-ß-gal) and p21, activation of ROS and increased expression of pro-inflammatory cytokines. The treatment with quercetin in senescent pre-adipocytes and adipocytes was associated to a significant decrease in the number of the SA-β-gal positive cells along with the suppression of ROS and of inflammatory cytokines. Besides, quercetin treatment decreased miR-155-5p expression in both models, with down-regulation of p65 and a trend toward an up-regulation of SIRT-1 in complete cell extracts. The senolytic compound quercetin could affect AT ageing by reducing senescence, induced in our in vitro model by oxidative stress. The downregulation of miRNA-155-5p, possibly through the modulation of NF-κB and SIRT-1, could have a key role in the effects of quercetin on both pre-adipocytes and adipocytes.

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Crossref · 10.1038/s41598-021-02544-0

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  • Hydrogen peroxide-induced senescence also triggers inflammation, characterized by the upregulation of pro-inflammatory cytokines such as IL-6, TNF-α, and MCP-1.

    “Hydrogen peroxide-induced senescence also triggers inflammation, characterized by the upregulation of pro-inflammatory cytokines such as IL-6, TNF-α, and MCP-1.282,283”
  • Treatment with quercetin significantly lowers levels of ROS and inflammatory cytokines, reduces expression of SA-β gal, p16 and p53, and markedly increases that of antioxidant enzymes SOD and CAT, regardless of the type of oxidative trigger used to induce senescence.

    “Results obtained on different cell lines show that treatment with quercetin significantly lowers the levels of ROS and inflammatory cytokines, reduces the expression of SA-β gal, p16 and p53 and markedly increases that of the antioxidant enzymes SOD and CAT, regardless of the type of oxidative trigger used to induce senescence [258,259,260,261,262].”

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Authors
Zoico, E., Nori, N., Darra, E., Tebon, M., Rizzatti, V., Policastro, G., De Caro, A., Rossi, A. P., Fantin, F., & Zamboni, M.
Affiliations
University of Verona (IT)
Corresponding author
Zoico, Elena
Venue
Scientific Reports
Published
2021-12-01
Volume
11
Issue
1
Pages
23237-23237
ISSN
2045-2322 (ISSN-L)
OpenAlex
W3215963477
Cited by
94
References
55
Citations by year
2026: 25 · 2025: 17 · 2024: 25 · 2023: 18 · 2022: 9
FWCI
8.16
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Institutional Research Information System (Università degli Studi di Trento) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
fondazione cariplo
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
Keywords
quercetin, senolytics, cellular senescence, adipocytes, preadipocytes, hydrogen peroxide-induced senescence, oxidative stress, senescence-associated β-galactosidase, reactive oxygen species, inflammatory cytokines, miR-155-5p, NF-κB, SIRT1, senolytic therapy
MeSH terms
Senotherapeutics, Aging, Animals, Hydrogen Peroxide, Quercetin, Cellular Senescence, Adipocytes, Oxidative Stress, MicroRNAs, 3T3-L1 Cells, Mice

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