Cited by 2,810Redox biology and oxidative stressAntioxidant Activity and Oxidative StressFree Radicals and Antioxidants

The Chemistry of Reactive Oxygen Species (ROS) Revisited: Outlining Their Role in Biological Macromolecules (DNA, Lipids and Proteins) and Induced Pathologies

Open access
Juan, Celia Andrés, Pérez de la Lastra, José Manuel, Plou, Francisco J., Pérez-Lebeña, Eduardo·2021·International Journal of Molecular Sciences

Abstract

Living species are continuously subjected to all extrinsic forms of reactive oxidants and others that are produced endogenously. There is extensive literature on the generation and effects of reactive oxygen species (ROS) in biological processes, both in terms of alteration and their role in cellular signaling and regulatory pathways. Cells produce ROS as a controlled physiological process, but increasing ROS becomes pathological and leads to oxidative stress and disease. The induction of oxidative stress is an imbalance between the production of radical species and the antioxidant defense systems, which can cause damage to cellular biomolecules, including lipids, proteins and DNA. Cellular and biochemical experiments have been complemented in various ways to explain the biological chemistry of ROS oxidants. However, it is often unclear how this translates into chemical reactions involving redox changes. This review addresses this question and includes a robust mechanistic explanation of the chemical reactions of ROS and oxidative stress.

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Crossref · 10.3390/ijms22094642

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  • In neurons, impaired oxidative phosphorylation leads to excessive electron leakage and ROS production, which drives lipid, protein, and DNA oxidation.

    “In neurons, impaired oxidative phosphorylation leads to excessive electron leakage and ROS production, which in turn drives lipid, protein, and DNA oxidation.”

    From Toward a Unified Framework in Molecular Neurobiology of Alzheimer’s Disease: Revisiting the Pathophysiological Hypotheses (2026) · cites this paper as [101]

    Section 4 (page unavailable) describes electrons from the mitochondrial transport chain producing superoxide and links mitochondrial dysfunction to elevated ROS in Huntington’s disease. Sections 3–6 describe ROS damage to lipids, proteins, and DNA. The paper does not establish the claimed sequence specifically in neurons: impaired oxidative phosphorylation causing excessive electron leakage and thereby all three forms of oxidation. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Oxidative injury is not an independent mechanism but a downstream manifestation of mitochondrial failure that further compromises energy metabolism and accelerates amyloid and tau pathology.

    “Thus, oxidative injury is not an independent mechanism but a downstream manifestation of mitochondrial failure that further compromises energy metabolism and accelerates amyloid and tau pathology [101].”

    From Toward a Unified Framework in Molecular Neurobiology of Alzheimer’s Disease: Revisiting the Pathophysiological Hypotheses (2026) · cites this paper as [101]

    Section 4 (ROS Damage on DNA; page unavailable) says mtDNA mutations can increase ROS and cause oxidative damage, supporting a link from mitochondrial dysfunction to oxidative injury. But it also says long-term oxidative stress may trigger mtDNA mutations, so it does not establish oxidative injury as only a downstream manifestation. Sections 4–6 link oxidative stress with Alzheimer’s disease and amyloid-beta, but do not say it accelerates amyloid or tau pathology or further compromises energy metabolism in that disease. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Peroxynitrite is short-lived and highly reactive and confers indirect toxicity to O2•−, particularly to DNA, proteins and lipids.

    “Peroxynitrite is a short-lived and highly reactive oxidant and is therefore another reaction that confers indirect toxicity to O2•−, in particular to DNA, proteins and lipids [122].”
  • H2O2, in biochemical reactions, produces the hydroxyl radical •OH + −OH, highly reactive in the mitochondrial matrix.

    “H2O2, in biochemical reactions, produces the hydroxyl radical •OH + −OH, highly reactive in the mitochondrial matrix [13].”

    From The Role of Reactive Species on Innate Immunity (2022) · cites this paper as [13]

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Research works printed but not linked: 1

  1. [27]Avendaño C. Menéndez J.C. Medicinal Chemistry of Anticancer Drugs 2nd ed. Elsevier Boston, MA, USA 2015

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Authors
Juan, C. A., Pérez de la Lastra, J. M., Plou, F. J., & Pérez-Lebeña, E.
Affiliations
  • Cinquima Institute and Department of Organic Chemistry, Faculty of Sciences, Valladolid University, Paseo de Belén, 7, 47011 Valladolid, Spain
  • Institute of Natural Products and Agrobiology, CSIC-Spanish Research Council, Avda. Astrofísico Fco. Sánchez, 38206 La Laguna, Spain
  • Consejo Superior de Investigaciones Científicas (ES)
  • Sistemas de Biotecnología y Recursos Naturales, 47625 Valladolid, Spain
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2021-04-28
Volume
22
Issue
9
Pages
4642
ISSN
1422-0067 (ISSN-L)
OpenAlex
W3157638995
Cited by
2,810
References
81
Citations by year
2026: 545 · 2025: 826 · 2024: 734 · 2023: 470 · 2022: 211 · 2021: 23
FWCI
37.73
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Fundación CajaCanarias (2019SP43)
  • Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ProID2020010134)
  • Junta de Castilla y León (FEDER-VA115P17, VA149G18)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Physical Sciences › Chemistry › Organic Chemistry › Free Radicals and Antioxidants
Keywords
reactive oxygen species, oxidative stress, DNA damage, lipid peroxidation, protein oxidation, redox chemistry, antioxidant defense, signal transduction, reaction mechanism
MeSH terms
Animals, Disease, DNA, DNA Damage, Humans, Mitochondria, Neutrophils, Oxidative Phosphorylation, Proteins, Lipid Peroxidation, Reactive Oxygen Species, Oxidative Stress, Pore Forming Cytotoxic Proteins

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