Cited by 23Nitric Oxide and Endothelin EffectsVitamin K Research StudiesAntioxidant Activity and Oxidative Stress

The Protective Role of Bioactive Quinones in Stress-induced Senescence Phenotype of Endothelial Cells Exposed to Cigarette Smoke Extract

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Cirilli, Ilenia, Orlando, Patrick, Marcheggiani, Fabio, Dludla, Phiwayinkosi V., Silvestri, Sonia, Damiani, Elisabetta, Tiano, Luca·2020·Antioxidants

Abstract

Endothelial dysfunction represents the initial stage in atherosclerotic lesion development which occurs physiologically during aging, but external factors like diet, sedentary lifestyle, smoking accelerate it. Since cigarette smoking promotes oxidative stress and cell damage, we developed an in vitro model of endothelial dysfunction using vascular cells exposed to chemicals present in cigarette smoke, to help elucidate the protective effects of anti-inflammatory and antioxidant agents, such as ubiquinol and vitamin K, that play a fundamental role in vascular health. Treatment of both young and senescent Human Umbilical Vein Endothelial Cells (HUVECs) for 24 h with cigarette smoke extract (CSE) decreased cellular viability, induced apoptosis via reactive oxygen species (ROS) imbalance and mitochondrial dysfunction and promoted an inflammatory response. Moreover, the senescence marker SA-β-galactosidase was observed in both young CSE-exposed and in senescent HUVECs suggesting that CSE exposure accelerates aging in endothelial cells. Supplementation with 10 µM ubiquinol and menaquinone-7 (MK7) counteracted oxidative stress and inflammation, resulting in improved viability, decreased apoptosis and reduced SA-β-galactosidase, but were ineffective against CSE-induced mitochondrial permeability transition pore opening. Other K vitamins tested like menaquinone-4 (MK4) and menaquinone-1 (K1) were less protective. In conclusion, CSE exposure was able to promote a stress-induced senescent phenotype in young endothelial cells likely contributing to endothelial dysfunction in vivo. Furthermore, the molecular changes encountered could be offset by ubiquinol and menaquinone-7 supplementation, the latter resulting the most bioactive K vitamin in counteracting CSE-induced damage.

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  1. [3]Rodgman A. Perfetti T.A. The Chemical Components of Tobacco and Tobacco Smoke 2nd ed. CRC Press Boca Raton, FL, USA 2013 1221 1297

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Authors
Cirilli, I., Orlando, P., Marcheggiani, F., Dludla, P. V., Silvestri, S., Damiani, E., & Tiano, L.
Affiliations
  • Marche Polytechnic University (IT)
  • South African Medical Research Council (ZA)
Corresponding author
  • Silvestri, Sonia
  • Damiani, Elisabetta
Venue
Antioxidants
Publisher
MDPI AG
Published
2020-10-16
Volume
9
Issue
10
Pages
1008
ISSN
2076-3921 (ISSN-L)
OpenAlex
W3093068821
Cited by
23
References
59
Citations by year
2026: 3 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 6 · 2021: 8
FWCI
2.56
Type
journal article
Language
en
Open access
Locations
  • Antioxidants (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Polytechnic University of the Marche (Ricerca Scientifica di Ateneo (Luca Tiano))
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin K Research Studies
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
cigarette smoke extract, endothelial cell senescence, endothelial dysfunction, human umbilical vein endothelial cells, ubiquinol, menaquinone-7, vitamin K, oxidative stress, apoptosis, mitochondrial dysfunction, mitochondrial permeability transition pore, reactive oxygen species, inflammation, SA-β-galactosidase, atherosclerosis, aging

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