Cited by 170Vitamin C and Antioxidants ResearchAntioxidant Activity and Oxidative StressRedox biology and oxidative stress

Recycling of Vitamin C by a Bystander Effect

Open access
Nualart, Francisco J., Rivas, Coralia I., Montecinos, Viviana P., Godoy, Alejandro S., Guaiquil, Victor H., Golde, David W., Vera, Juan Carlos·2003·Journal of Biological Chemistry

Abstract

Human cells transport dehydroascorbic acid through facilitative glucose transporters, in apparent contradiction with evidence indicating that vitamin C is present in human blood only as ascorbic acid. On the other hand, activated host defense cells undergoing the oxidative burst show increased vitamin C accumulation. We analyzed the role of the oxidative burst and the glucose transporters on vitamin C recycling in an in vitro system consisting of activated host-defense cells co-cultured with human cell lines and primary cells. We asked whether human cells can acquire vitamin C by a "bystander effect" by taking up dehydroascorbic acid generated from extracellular ascorbic acid by neighboring cells undergoing the oxidative burst. As activated cells, we used HL-60 neutrophils and normal human neutrophils activated with phorbol 12 myristate 13-acetate. As bystander cells, we used immortalized cell lines and primary cultures of human epithelial and endothelial cells. Activated cells produced superoxide anions that oxidized extracellular ascorbic acid to dehydroascorbic acid. At the same time, there was a marked increase in vitamin C uptake by the bystander cells that was blocked by superoxide dismutase but not by catalase and was inhibited by the glucose transporter inhibitor cytochalasin B. Only ascorbic acid was accumulated intracellularly by the bystander cells. Glucose partially blocked vitamin C uptake by the bystander cells, although it increased superoxide production by the activated cells. We conclude that the local production of superoxide anions by activated cells causes the oxidation of extracellular ascorbic acid to dehydroascorbic acid, which is then transported by neighboring cells through the glucose transporters and immediately reduced to ascorbic acid intracellularly. In addition to causing increased intracellular concentrations of ascorbic acid with likely associated enhanced antioxidant defense mechanisms, the bystander effect may allow the recycling of vitamin C in vivo, which may contribute to the low daily requirements of the vitamin in humans.

Integrity signals

Registry

Crossref · 10.1074/jbc.m210686200

Cites

52 of 52 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Administered ascorbate becomes DHA, which resembles glucose and is efficiently imported through GLUT1 in KRAS or BRAF mutant cells.

    “When ascorbate is administered, it is oxidized to DHA. Owing to its structural similarity to glucose, DHA is efficiently taken up via GLUT1 in KRAS or BRAF mutant cells47,48”

    From Targeting cancer vulnerabilities with high-dose vitamin C (2019) · cites this paper as [48]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Nualart, F. J., Rivas, C. I., Montecinos, V. P., Godoy, A. S., Guaiquil, V. H., Golde, D. W., & Vera, J. C.
Affiliations
  • University of Concepción (CL)
  • Memorial Sloan Kettering Cancer Center (US)
Corresponding author
Vera, Juan Carlos
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2003-03
Volume
278
Issue
12
Pages
10128-10133
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2074869909
Cited by
170
References
52
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 7 · 2022: 5 · 2021: 10 · 2020: 13 · 2019: 6 · 2018: 4 · 2017: 6 · 2016: 4 · 2015: 6 · 2014: 8 · 2013: 9 · 2012: 11
FWCI
8.31
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
  • Greater South Information System
Funders
National Cancer Institute (CA30388)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
dehydroascorbic acid, bystander effect, glucose transporters, respiratory burst, superoxide, neutrophil activation, ascorbic acid uptake, superoxide dismutase, cytochalasin B, antioxidant defense, vitamin C requirement
MeSH terms
Ascorbic Acid, Cytochalasin B, Dehydroascorbic Acid, Glucose, Humans, Neutrophils, Superoxides, Tetradecanoylphorbol Acetate, Tumor Cells, Cultured, Respiratory Burst

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review