Cited by 193Vitamin C and Antioxidants ResearchAmino Acid Enzymes and MetabolismAntioxidant Activity and Oxidative Stress

Cellular pathways for transport and efflux of ascorbate and dehydroascorbate

Corti, Alessandro, Casini, Alessandro F., Pompella, Alfonso·2010·Archives of Biochemistry and Biophysics

Abstract

The mechanisms allowing the cellular transport of ascorbic acid represent a primary aspect for the understanding of the roles played by this vitamin in pathophysiology. Considerable research effort has been spent in the field, on several animal models and different cell types. Several mechanisms have been described to date, mediating the movements of different redox forms of ascorbic acid across cell membranes. Vitamin C can enter cells both in its reduced and oxidized form, ascorbic acid (AA) and dehydroascorbate (DHA), utilizing respectively sodium-dependent transporters (SVCT) or glucose transporters (GLUT). Modulation of SVCT expression and function has been described by cytokines, steroids and post-translational protein modification. Cellular uptake of DHA is followed by its intracellular reduction to AA by several enzymatic and non-enzymatic systems. Efflux of vitamin C has been also described in a number of cell types and different pathophysiological functions were proposed for this phenomenon, in dependence of the cell model studied. Cellular efflux of AA is mediated through volume-sensitive (VSOAC) and Ca(2+)-dependent anion channels, gap-junction hemichannels, exocytosis of secretory vesicles and possibly through homo- and hetero-exchange systems at the plasma membrane level. Altogether, available data suggest that cellular efflux of ascorbic acid - besides its uptake - should be taken into account when evaluating the cellular homeostasis and functions of this important vitamin.

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Crossref · 10.1016/j.abb.2010.05.014

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  • Cancer cells with high GLUT1, rather than sodium-dependent vitamin C transporters, take up ascorbate only as DHA in culture and in animals.

    “cancer cells with high GLUT1 but not sodium-dependent vitamin C transporters exclusively take up ascorbate in the form of DHA both in vitro or in vivo6,8,47,53.”

    From Targeting cancer vulnerabilities with high-dose vitamin C (2019) · cites this paper as [6]

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Authors
Corti, A., Casini, A. F., & Pompella, A.
Affiliations
University of Pisa (IT)
Corresponding author
Corti, Alessandro
Venue
Archives of Biochemistry and Biophysics
Publisher
Elsevier BV
Published
2010-08
Volume
500
Issue
2
Pages
107-115
ISSN
0003-9861 (ISSN-L)
OpenAlex
W2024573050
Cited by
193
References
193
Citations by year
2026: 3 · 2025: 7 · 2024: 4 · 2023: 3 · 2022: 8 · 2021: 17 · 2020: 14 · 2019: 17 · 2018: 15 · 2017: 16 · 2016: 10 · 2015: 20 · 2014: 17 · 2013: 14 · 2012: 16
FWCI
1.47
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Biochemistry and Biophysics (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
Funders
  • Istituto Toscano Tumori
  • Ministero dell'Università e della Ricerca
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
vitamin C, dehydroascorbic acid, vitamin C transport, sodium-dependent vitamin C transporters, glucose transporters, gap junction hemichannels, exocytosis, intracellular reduction, post-translational modification
MeSH terms
Animals, Ascorbic Acid, Biological Transport, Active, Cell Membrane, Dehydroascorbic Acid, Humans, Ion Channels, Models, Biological, Neoplasms, Oxidation-Reduction, Symporters, Organic Anion Transporters, Sodium-Dependent, Glucose Transport Proteins, Facilitative

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