Cited by 497Tryptophan and brain disordersNeuroinflammation and Neurodegeneration MechanismsAmino Acid Enzymes and Metabolism

Expression of indoleamine 2,3-dioxygenase and production of quinolinic acid by human microglia, astrocytes, and neurons

Guillemin, Gilles J., Smythe, George, Takikawa, Osamu, Brew, Bruce J.·2005·Glia

Abstract

There is good evidence that the kynurenine pathway (KP) and one of its end products, quinolinic acid (QUIN) play a role in the pathogenesis of several major neurological diseases. While QUIN has been shown to be produced in neurotoxic concentrations by macrophages and microglia, the capacity of astrocytes and neurons to produce QUIN is controversial. Using interferon gamma (IFN‐γ)‐stimulated primary cultures of human mixed brain cells, we assayed expression of the KP regulatory enzyme indoleamine 2,3‐dioxygenase (IDO) and QUIN production by immunocytochemistry. Using IFN‐γ‐stimulated purified cultures of neurons, astrocytes, microglia and macrophages, we studied IDO expression by RT‐PCR and production of QUIN using mass spectrometry. We found that astrocytes, neurons, and microglia expressed IDO but only microglia were able to produce detectable amounts of QUIN. However, astrocytes and neurons had the ability to catabolize QUIN. This study also provides the first evidence of IDO expression and lack of production of QUIN in culture of primary human neurons. © 2004 Wiley‐Liss, Inc.

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Crossref · 10.1002/glia.20090

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Authors
Guillemin, G. J., Smythe, G., Takikawa, O., & Brew, B. J.
Affiliations
  • UNSW Sydney (AU)
  • Hokkaido University (JP)
Corresponding author
Guillemin, Gilles J.
Venue
Glia
Publisher
Wiley
Published
2004-07-06
Volume
49
Issue
1
Pages
15-23
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W2042731928
Cited by
497
References
0
Citations by year
2026: 17 · 2025: 15 · 2024: 27 · 2023: 15 · 2022: 30 · 2021: 29 · 2020: 40 · 2019: 23 · 2018: 26 · 2017: 25 · 2016: 36 · 2015: 19 · 2014: 30 · 2013: 30 · 2012: 19
FWCI
5.62
Type
journal article
Language
en
Open access
closed
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
Keywords
indoleamine 2,3-dioxygenase, quinolinic acid, kynurenine pathway, microglia, astrocytes, neurons, interferon-gamma, neuroinflammation
MeSH terms
Astrocytes, Brain, Brain Chemistry, Cells, Cultured, Encephalitis, Humans, Immunohistochemistry, Interferon-gamma, Kynurenine, Macrophages, Neurons, Mass Spectrometry, Tryptophan Oxygenase, Molecular Structure, Signal Transduction, Quinolinic Acid, Microglia, Coculture Techniques, Indoleamine-Pyrrole 2,3,-Dioxygenase

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