Cited by 867Redox biology and oxidative stressCancer and biochemical researchAntioxidant Activity and Oxidative Stress

Antioxidants Accelerate Lung Cancer Progression in Mice

Sayin, Volkan I., Ibrahim, Mohamed X., Larsson, Erik, Nilsson, Jonas A., Lindahl, Per, Bergo, Martin O.·2014·Science Translational Medicine

Abstract

Antioxidants are widely used to protect cells from damage induced by reactive oxygen species (ROS). The concept that antioxidants can help fight cancer is deeply rooted in the general population, promoted by the food supplement industry, and supported by some scientific studies. However, clinical trials have reported inconsistent results. We show that supplementing the diet with the antioxidants N-acetylcysteine (NAC) and vitamin E markedly increases tumor progression and reduces survival in mouse models of B-RAF- and K-RAS-induced lung cancer. RNA sequencing revealed that NAC and vitamin E, which are structurally unrelated, produce highly coordinated changes in tumor transcriptome profiles, dominated by reduced expression of endogenous antioxidant genes. NAC and vitamin E increase tumor cell proliferation by reducing ROS, DNA damage, and p53 expression in mouse and human lung tumor cells. Inactivation of p53 increases tumor growth to a similar degree as antioxidants and abolishes the antioxidant effect. Thus, antioxidants accelerate tumor growth by disrupting the ROS-p53 axis. Because somatic mutations in p53 occur late in tumor progression, antioxidants may accelerate the growth of early tumors or precancerous lesions in high-risk populations such as smokers and patients with chronic obstructive pulmonary disease who receive NAC to relieve mucus production.

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Crossref · 10.1126/scitranslmed.3007653

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42 of 42 references verified0 citation errors · 0 not checkable

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  • Protocols based on depletion of GSH or blocking uptake of the cysteine/glutamate antiporter XCT greatly impact cancer cell survival.

    “while high levels of NADPH boost the metastatic ability of melanoma cells, and protocols based on depletion of GSH (isothiocyanates and aziridine derivatives that bind GSH) or based on blocking the uptake of a rate-limiting precursor of its synthesis (inhibitors of the cysteine/glutamate antiporter, XCT) greatly impact cancer cell survival67,68.”

    From ROS in cancer therapy: the bright side of the moon (2020) · cites this paper as [67]

  • High levels of NADPH boost the metastatic ability of melanoma cells.

    “while high levels of NADPH boost the metastatic ability of melanoma cells, and protocols based on depletion of GSH (isothiocyanates and aziridine derivatives that bind GSH) or based on blocking the uptake of a rate-limiting precursor of its synthesis (inhibitors of the cysteine/glutamate antiporter, XCT) greatly impact cancer cell survival67,68.”

    From ROS in cancer therapy: the bright side of the moon (2020) · cites this paper as [67]

  • Antioxidants including N-acetyl l-cysteine (NAC) and vitamin E markedly increased tumor progression and cancer metastasis.

    “However, in reality, previous studies have demonstrated that antioxidants, including N‐acetyl l‐cysteine (NAC) and vitamin E, markedly increased tumor progression and cancer metastasis.10, 11”
  • Human and animal studies have not clearly shown that antioxidants prevent or suppress cancer.

    “recent results from both human and animal studies have found no clear evidence of the benefit of antioxidant treatment in preventing or suppressing cancer development.”

    From Targeting cancer vulnerabilities with high-dose vitamin C (2019) · cites this paper as [14]

  • In mouse models of lung adenocarcinoma and melanoma, antioxidants seemed to speed cancer progression and metastasis.

    “antioxidant treatment even appeared to accelerate cancer progression and metastasis in mouse models of lung adenocarcinoma and melanoma14–16”

    From Targeting cancer vulnerabilities with high-dose vitamin C (2019) · cites this paper as [14]

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Authors
Sayin, V. I., Ibrahim, M. X., Larsson, E., Nilsson, J. A., Lindahl, P., & Bergo, M. O.
Affiliations
  • University of Gothenburg (SE)
  • Sahlgrenska Cancer Center, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, SE-405 30 Gothenburg, Sweden.
Corresponding author
Lindahl, Per
Venue
Science Translational Medicine
Published
2014-01-29
Volume
6
Issue
221
Pages
221ra15-221ra15
ISSN
  • 1946-6234 (ISSN-L)
  • 1946-6242
OpenAlex
W2154553542
Cited by
867
References
42
Citations by year
2026: 51 · 2025: 56 · 2024: 53 · 2023: 63 · 2022: 73 · 2021: 76 · 2020: 66 · 2019: 81 · 2018: 74 · 2017: 68 · 2016: 89 · 2015: 65 · 2014: 52
FWCI
37.40
Type
journal article
Language
en
Open access
closed
Locations
  • Science Translational Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer and biochemical research
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
antioxidants, N-acetylcysteine, vitamin E, lung cancer, reactive oxygen species, p53, tumor progression, BRAF, KRAS, tumor transcriptome, DNA damage, tumor cell proliferation, dietary supplementation, smokers, chronic obstructive pulmonary disease
MeSH terms
Acetylcysteine, Animals, Antioxidants, Disease Models, Animal, DNA Damage, Fibroblasts, Humans, Lung Neoplasms, Solubility, Vitamin E, Tumor Suppressor Protein p53, Reactive Oxygen Species, Disease Progression, Cell Line, Tumor, Cell Proliferation, Mice

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