AMPK-mediated senolytic and senostatic activity of quercetin surface functionalized FE3O4 nanoparticles during oxidant-induced senescence in human fibroblasts

Author

Lewinska A., Adamczyk-Grochala J., Bloniarz D., Olszowka J., Kulpa-Greszta M., Litwinienko G., et al.

Journal

Redox Biology

Volume

28

Issue ID

101337

Page

1-15

Date

2019 October 

Keyword 

Quercetin surface functionalized Fe3O4 nanoparticles
Hydrogen peroxide
Senescence
Senolytics
Senostatics
Fibroblasts

Abstract

Cellular senescence may contribute to aging and age-related diseases and senolytic drugs that selectively kill senescent cells may delay aging and promote healthspan. More recently, several categories of senolytics have been established, namely HSP90 inhibitors, Bcl-2 family inhibitors and natural compounds such as quercetin and fisetin. However, senolytic and senostatic potential of nanoparticles and surface-modified nanoparticles has never been addressed. In the present study, quercetin surface functionalized Fe3O4 nanoparticles (MNPQ) were synthesized and their senolytic and senostatic activity was evaluated during oxidative stress-induced senescence in human fibroblasts in vitro. MNPQ promoted AMPK activity that was accompanied by non-apoptotic cell death and decreased number of stress-induced senescent cells (senolytic action) and the suppression of senescence associated proinflammatory response (decreased levels of secreted IL-8 and IFN-β, senostatic action). In summary, we have shown for the first time that MNPQ may be considered as promising candidates for senolytic- and senostatic-based anti-aging therapies.

Language

English 

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