Cited by 111Receptor Mechanisms and SignalingChemokine receptors and signalingImmune Response and Inflammation

Altered immune response in mice deficient for the G protein-coupled receptor GPR34

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Liebscher, Ines, Müller, Uwe, Teupser, Daniel, Engemaier, Eva, Engel, Kathrin M.Y., Ritscher, Lars, Thor, Doreen, Sangkuhl, Katrin +10 more·2011·Journal of Biological Chemistry

Abstract

The X-chromosomal GPR34 gene encodes an orphan G(i) protein-coupled receptor that is highly conserved among vertebrates. To evaluate the physiological relevance of GPR34, we generated a GPR34-deficient mouse line. GPR34-deficient mice were vital, reproduced normally, and showed no gross abnormalities in anatomical, histological, laboratory chemistry, or behavioral investigations under standard housing. Because GPR34 is highly expressed in mononuclear cells of the immune system, mice were specifically tested for altered functions of these cell types. Following immunization with methylated BSA, the number of granulocytes and macrophages in spleens was significantly lower in GPR34-deficient mice as in wild-type mice. GPR34-deficient mice showed significantly increased paw swelling in the delayed type hypersensitivity test and higher pathogen burden in extrapulmonary tissues after pulmonary infection with Cryptococcus neoformans compared with wild-type mice. The findings in delayed type hypersensitivity and infection tests were accompanied by significantly different basal and stimulated TNF-α, GM-CSF, and IFN-γ levels in GPR34-deficient animals. Our data point toward a functional role of GPR34 in the cellular response to immunological challenges.

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Crossref · 10.1074/jbc.m110.196659

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  • The function and importance of Gpr34 and its protein product remain largely undetermined, though its suspected role in detecting short chain fatty acids may implicate it in both metabolic and immune pathways.

    “The function and importance of Gpr34 and its protein product remain largely undetermined, though its suspected role in detecting short chain fatty acids may implicate it in both metabolic and immune pathways (45, 98).”

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Authors
Liebscher, I., Müller, U., Teupser, D., Engemaier, E., Engel, K. M. Y., Ritscher, L., Thor, D., Sangkuhl, K., Ricken, A., Wurm, A., Piehler, D., Schmutzler, S., Fuhrmann, H., Albert, F. W., Reichenbach, A., Thiery, J., Schöneberg, T., & Schulz, A.
Affiliations
  • Leipzig University (DE)
  • Max Planck Society (DE)
Corresponding author
Schöneberg, Torsten
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2011-01
Volume
286
Issue
3
Pages
2101-2110
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2009823940
Cited by
106
References
59
Citations by year
2026: 9 · 2025: 5 · 2024: 13 · 2023: 9 · 2022: 4 · 2021: 5 · 2020: 6 · 2019: 6 · 2018: 3 · 2017: 8 · 2016: 8 · 2015: 6 · 2014: 6 · 2013: 7 · 2012: 7
FWCI
2.34
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
GPR34, orphan G protein-coupled receptor, immune response, mononuclear cells, granulocytes, macrophages, delayed-type hypersensitivity, cytokine levels, TNF-α, GM-CSF, interferon-gamma, X chromosome
MeSH terms
Animals, Cattle, Cryptococcosis, Cryptococcus neoformans, Granulocytes, Hypersensitivity, Delayed, Immunization, Macrophages, Pneumonia, Serum Albumin, Bovine, X Chromosome, Cytokines, Mice, Knockout, Receptors, Lysophospholipid, Mice

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