Cited by 1,775Immune cells in cancerAmino Acid Enzymes and MetabolismCancer Research and Treatments

Regulation of immune responses by L-arginine metabolism

Bronte, Vincenzo, Zanovello, Paola·2005·Nature Reviews Immunology

Abstract

L-Arginine is an essential amino acid for birds and young mammals, and it is a conditionally essential amino acid for adult mammals, as it is important in situations in which requirements exceed production, such as pregnancy. Recent findings indicate that increased metabolism of L-arginine by myeloid cells can result in the impairment of lymphocyte responses to antigen during immune responses and tumour growth. Two enzymes that compete for L-arginine as a substrate - arginase and nitric-oxide synthase - are crucial components of this lymphocyte-suppression pathway, and the metabolic products of these enzymes are important moderators of T-cell function. This Review article focuses on the relevance of L-arginine metabolism by myeloid cells for immunity under physiological and pathological conditions.

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Crossref · 10.1038/nri1668

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  • Neutrophils, by releasing arginase or ROS, can inhibit NK-cell or T-cell activation by depriving extracellular levels of L-arginine, necessary for T-cell activation.

    “Along with activation of innate or adaptive immune cells, neutrophils, by releasing arginase or ROS, can inhibit NK-cell or T-cell activation by depriving extracellular levels of L-arginine, necessary for T-cell activation [225].”

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Authors
Bronte, V., & Zanovello, P.
Affiliations
University of Padua (IT)
Corresponding author
Bronte, Vincenzo
Venue
Nature Reviews Immunology
Published
2005-08
Volume
5
Issue
8
Pages
641-654
ISSN
  • 1474-1733 (ISSN-L)
  • 1474-1741
OpenAlex
W1977179270
Cited by
1,775
References
146
Citations by year
2026: 69 · 2025: 78 · 2024: 75 · 2023: 96 · 2022: 81 · 2021: 114 · 2020: 100 · 2019: 92 · 2018: 97 · 2017: 89 · 2016: 119 · 2015: 92 · 2014: 95 · 2013: 96 · 2012: 97
FWCI
3.93
Type
journal article
Language
en
Open access
closed
Locations
  • Nature reviews. Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Cancer Research and Treatments
Keywords
arginine metabolism, immune regulation, arginase, nitric oxide synthase, myeloid cells, T cell function, lymphocyte suppression, tumor growth, immunosuppression, essential amino acids
MeSH terms
Animals, Arginase, Arginine, Humans, Immunity, Cellular, Suppressor Factors, Immunologic, T-Lymphocytes, Reactive Oxygen Species, Nitric Oxide Synthase, Myeloid Cells, Reactive Nitrogen Species

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