Cited by 554Immune cells in cancerNitric Oxide and Endothelin EffectsPhagocytosis and Immune Regulation

Reciprocal regulation of the nitric oxide synthase/arginase balance in mouse bone marrow‐derived macrophages by TH 1 and TH 2 cytokines

Modolell, Manuel, Corraliza, Ines M., Link, Franz, Soler, Germán, Eichmann, Klaus·1995·European Journal of Immunology

Abstract

Activation with lipopolysaccharide induces macrophages to produce the enzymes arginase and nitric oxide (NO) synthase. Both enzymes use as a substrate the amino acid L-arginine, which can be either hydrolyzed by arginase to urea and ornithine or oxidized by NO synthase to NO and citrulline. NO is important in the bactericidal and cytotoxic activities of macrophages. An equivalent functional role of arginase and its products is not known. We tested the induction of arginase in bone marrow-derived macrophages by endogenous mediators that are known to induce NO synthase, such as interferon-gamma (IFN-gamma), or suppress the induction of this enzyme, such as interleukin (IL)-4, IL-10, and prostaglandin E2 (PGE2). We find that PGE2 and the TH2 cytokines IL-4 and IL-10 are potent inducers of arginase. In contrast, the TH1 cytokine IFN-gamma does not induce arginase. Simultaneous application of both types of mediators leads to reduced induction of both arginase and NO synthase. Exposure of macrophage cultures to inducers of NO synthase exhausts their ability to respond subsequently to inducers of arginase. Conversely, exposure of the cells to inducers of arginase exhausts their ability to respond subsequently to inducers of NO synthase. The results are consistent with a competition of both enzymes for their substrate, L-arginine, with a reciprocal inhibition in the induction of both enzymes, or a combination of both phenomena. The enzymes NO synthase and arginase appear to define two alternate functional states of macrophages, induced by TH1 and TH2 cytokines, respectively.

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Crossref · 10.1002/eji.1830250436

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  • ARG1 in myeloid cells mainly functions as an enzyme to hydrolyze arginine to produce ornithine as part of the urea cycle, which promotes tissue repair through generation of polyamines and collagens, and reduces nitric oxide production from inducible nitric oxide synthase through decreasing intracellular arginine availability.

    “ARG1 in myeloid cells mainly functions as an enzyme to hydrolyze arginine to produce ornithine as part of the urea cycle, which both promotes tissue repair through generation of polyamines and collagens, and also reduces nitric oxide production from inducible nitric oxide synthase through decreasing intracellular arginine availability (76–78).”

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Authors
Modolell, M., Corraliza, I. M., Link, F., Soler, G., & Eichmann, K.
Affiliations
  • Max Planck Society (DE)
  • Max Planck Institute of Immunobiology and Epigenetics (DE)
  • Universidad de Extremadura (ES)
Corresponding author
Modolell, Manuel
Venue
European Journal of Immunology
Publisher
Wiley
Published
1995-04
Volume
25
Issue
4
Pages
1101-1104
ISSN
  • 0014-2980 (ISSN-L)
  • 1521-4141
OpenAlex
W1984188855
Cited by
554
References
28
Citations by year
2026: 7 · 2025: 6 · 2024: 15 · 2023: 12 · 2022: 11 · 2021: 16 · 2020: 12 · 2019: 24 · 2018: 17 · 2017: 23 · 2016: 13 · 2015: 20 · 2014: 37 · 2013: 21 · 2012: 22
FWCI
3.39
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
nitric oxide synthase, arginase, macrophages, bone marrow-derived macrophages, Th1 cytokines, Th2 cytokines, interferon-gamma, IL-4, IL-10, prostaglandin E2, L-arginine, substrate competition, macrophage activation, lipopolysaccharide
MeSH terms
Amino Acid Oxidoreductases, Animals, Arginase, Bone Marrow, Cells, Cultured, Macrophages, Mice, Inbred BALB C, Mice, Inbred C57BL, CD4-Positive T-Lymphocytes, Gene Expression Regulation, Enzymologic, T-Lymphocyte Subsets, Cytokines, Nitric Oxide Synthase, Mice

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