Cited by 139Redox biology and oxidative stressT-cell and B-cell ImmunologyNeutrophil, Myeloperoxidase and Oxidative Mechanisms

Effect of antioxidants on primary alloantigen-induced T cell activation and proliferation

Chaudhri, G, Clark, I A, Hunt, N H, Cowden, W B, Ceredig, R·1986·The Journal of Immunology

Abstract

Because oxygen-centered free radicals are involved in cell-mediated immune responses, we examined the possibility that these reactive species could also have a role in the lymphoproliferative response to alloantigens in the mixed lymphocyte culture (MLC). Three classes of agents that prevent the formation, or damaging effects, of oxygen radicals were tested: the non-permeant electron acceptor ferricyanide; the iron chelators desferrioxamine, desferrithiocin, octanohydroxamic acid, and pyridoxal isonicotinoyl hydrazone, which are thought to be capable of preventing the iron-catalyzed reduction of H2O2 to more reactive species; and the lipid-soluble free radical scavenger butylated hydroxyanisole. These compounds inhibited the proliferation of all potential responder cells in the MLC in a dose-dependent manner. Inhibition was observed only if these agents were present early (less than 40 hr) in the MLC; if added later, their effects were significantly reduced. In contrast, the interleukin 2 (IL 2)-dependent proliferation of CTLL-2 cells or Con A blasts was not affected by these compounds at concentrations that inhibited proliferation in MLC by greater than 90%. Interleukin 1 (IL 1) production by peritoneal exudate cells and IL 2 and IL 1 levels in MLC were not affected by any of the agents tested. By flow microfluorometry, the expression of IL 2 receptors on stimulated T cells was found to be inhibited in the presence of these drugs. Taken together, the data point to an important role for free radical-mediated processes during the early stages of T lymphocyte activation, before IL 2 receptor expression.

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Crossref · 10.4049/jimmunol.137.8.2646

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Authors
Chaudhri, G., Clark, I. A., Hunt, N. H., Cowden, W. B., & Ceredig, R.
Affiliations
Australian National University (AU)
Venue
The Journal of Immunology
Published
1986-10
Volume
137
Issue
8
Pages
2646-2652
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1563909789
Cited by
138
References
0
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2022: 3 · 2021: 2 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 3 · 2015: 3 · 2014: 3 · 2013: 5 · 2012: 4
FWCI
1.69
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
Keywords
antioxidants, oxygen free radicals, T cell activation, alloantigen, lymphocyte proliferation, mixed lymphocyte reaction, ferricyanide, iron chelators, deferoxamine, pyridoxal isonicotinoyl hydrazone, butylated hydroxyanisole, interleukin-2 receptor, interleukin-1, interleukin-2, cell-mediated immunity
MeSH terms
Animals, Antioxidants, Female, Flow Cytometry, Interleukin-2, Isoantigens, Kinetics, Lymphocyte Culture Test, Mixed, Lymphocyte Activation, Mice, Inbred CBA, Mice, Inbred C3H, Mice, Inbred C57BL, Mice, Inbred DBA, T-Lymphocytes, Mice

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