Cited by 70Vitamin C and Antioxidants ResearchCell death mechanisms and regulationAntioxidant Activity and Oxidative Stress

Regulation of Apoptosis by Vitamin C

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Vissers, Margret C.M., Lee, Wai-Gin, Hampton, Mark B.·2001·Journal of Biological Chemistry

Abstract

We have investigated the ability of intracellular vitamin C to protect human umbilical vein endothelial cells from exposure to hypochlorous acid (HOCl) and a range of derived chloramines. Ascorbate provided minimal protection against the cytotoxicity induced by these oxidants, as measured by propidium iodide uptake. In contrast, there was a marked effect on apoptosis, monitored by caspase-3 activation and phosphatidylserine exposure. Extended incubation of the cells with glycine chloramine or histamine chloramine completely blocked apoptosis initiated in the cells by serum withdrawal. This effect was significantly abrogated by ascorbate. Inhibition of apoptosis required the oxidant to be present for an extended period after serum withdrawal and occurred prior to caspase-3 activation. General protection of thiols by ascorbate was not responsible for the protection of apoptosis, because intracellular oxidation by HOCl or chloramines was not prevented in supplemented cells. The results suggest a new role for vitamin C in the regulation of apoptosis. We propose that, by protection of an oxidant-sensitive step in the initiation phase, ascorbate allows apoptosis to proceed in endothelial cells under sustained oxidative stress.

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Crossref · 10.1074/jbc.m107664200

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  • Vitamin C regulates the stabilization and activation of the hypoxia-inducible factor (HIF)-1 through the stimulation of regulatory hydroxylases.

    “Through the stimulation of regulatory hydroxylases, vitamin C also regulates the stabilization and activation of the hypoxia-inducible factor (HIF)-1, a metabolic sensor that controls the expression of hundreds of genes involved with cell survival and tissue remodelling, including collagenases [103,104,105].”

    From The Roles of Vitamin C in Skin Health. (2017) · cites this paper as [105]

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Authors
Vissers, M. C. M., Lee, W.-G., & Hampton, M. B.
Corresponding author
Vissers, Margret C.M.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2001-12
Volume
276
Issue
50
Pages
46835-46840
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1982484092
Cited by
70
References
54
Citations by year
2026: 1 · 2024: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 1 · 2015: 3 · 2014: 2 · 2013: 6 · 2012: 3
FWCI
6.70
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Canterbury Medical Research Foundation
  • Health Research Council of New Zealand
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
vitamin C, apoptosis, hypochlorous acid, chloramines, endothelial cells, caspase-3 activation, serum deprivation, oxidative stress, thiol protection, phosphatidylserine exposure
MeSH terms
Antioxidants, Ascorbic Acid, Cell Survival, Cells, Cultured, Chlorine, Dose-Response Relationship, Drug, Endothelium, Vascular, Enzyme Activation, Humans, Hypochlorous Acid, Models, Biological, Necrosis, Oxygen, Time Factors, Umbilical Veins, Oxidants, Apoptosis, Oxidative Stress, Caspases, Caspase 3

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