Cited by 37Trace Elements in HealthTelomeres, Telomerase, and SenescenceHeavy Metal Exposure and Toxicity

Changes in Zn homeostasis during long term culture of primary endothelial cells and effects of Zn on endothelial cell senescence

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Malavolta, Marco, Costarelli, Laura, Giacconi, Robertina, Basso, Andrea, Piacenza, Francesco, Pierpaoli, Elisa, Provinciali, Mauro, Ogo, Ogo A. +1 more·2017·Experimental Gerontology

Abstract

Endothelial cell senescence and Zn nutritional status influence cardiovascular disease. The influence of Zn appears dichotomous, hence it is imperative to understand the relationship with cellular senescence to improve knowledge about the molecular and cellular basis of the disease. Here we aimed to determine: 1) the impact of chronic exposure to a moderately high dose of Zn on senescence of endothelial cells; 2) the changes in Zn homeostasis during the lifespan of primary cultured endothelial cells; and 3) the susceptibility of proliferating and senescent endothelial cells to cell death after short term exposure to increasing doses of Zn and of the Zn chelator TPEN. Chronic exposure to Zn accelerated senescence and untreated cells at later passages, where doubling time had increased, displayed relocation of labile Zn and altered expression of genes involved in the response to Zn toxicity, including SLC30A1, SLC39A6, SLC30A5, SLC30A10 and metallothioneins, indicating that senescent cells have altered zinc homeostasis. Most Zn-dependent genes that were expressed differently between early and late passages were correlated with changes in the expression of anti-apoptotic genes. Short-term treatment with a high dose of Zn leads to cell death, but only in the population of cells at both earlier and later passages that had already entered senescence. In contrast, Zn depletion led to death of cells at earlier but not later passages, which suggests that there are sub-populations of senescent cells that are resistant to Zn depletion. This resistant senescent cell population may accumulate under conditions of Zn deficiency and contribute to vascular pathology.

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Crossref · 10.1016/j.exger.2017.09.006

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  • The structural and functional roles of zinc, selenium, magnesium, copper, and manganese are crucial for antioxidant defence.

    “Concerning the latter, the structural and functional roles of a few minerals such as zinc (Zn), selenium (Se), magnesium (Mg) copper (Cu) and manganese (Mn) is crucial (Table 5) [409,410,411,412,413,414,415,416,417,418,419,420].”
  • Zinc overload can contribute to increased cellular oxidative stress and senescence through mechanisms possibly related to organelle dysfunction.

    “On the other hand, Zn overload can contribute to augment cellular OS and senescence through different mechanisms not yet well-defined, but possibly related to organelles dysfunction [411,427,438].”

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Authors
Malavolta, M., Costarelli, L., Giacconi, R., Basso, A., Piacenza, F., Pierpaoli, E., Provinciali, M., Ogo, O. A., & Ford, D.
Affiliations
  • Istituto Nazionale di Riposo e Cura per Anziani (IT)
  • Newcastle University (GB)
  • Northumbria University (GB)
Corresponding author
Malavolta, Marco
Venue
Experimental Gerontology
Publisher
Elsevier BV
Published
2017-12
Volume
99
Pages
35-45
ISSN
0531-5565 (ISSN-L)
OpenAlex
W2754293248
Cited by
37
References
47
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 7 · 2022: 3 · 2021: 4 · 2020: 4 · 2018: 9 · 2017: 1
FWCI
3.18
Type
journal article
Language
en
Open access
Locations
  • Experimental Gerontology (publishedVersion)
  • PubMed (publishedVersion)
  • Northumbria Research Link (Northumbria University) (submittedVersion)
  • Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
  • FA (TD1304)
  • UK Biotechnology and Biological Sciences Research Council (BB/F019637/1)
  • Benue State University
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Heavy Metal Exposure and Toxicity
Keywords
zinc homeostasis, endothelial cell senescence, zinc toxicity, TPEN, labile zinc, metallothionein, zinc transporters, SLC39A6, SLC30A10, apoptosis, zinc deficiency, zinc depletion, cardiovascular disease, primary endothelial cells
MeSH terms
Cells, Cultured, Chelating Agents, Dose-Response Relationship, Drug, Ethylenediamines, Gene Expression Regulation, Homeostasis, Humans, Time Factors, Cellular Senescence, Apoptosis, Zinc Sulfate, Gene Expression Profiling, Databases, Genetic, Endothelial Cells, Cell Shape, Cell Proliferation, Primary Cell Culture, Human Umbilical Vein Endothelial Cells

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