Cited by 104Adenosine and Purinergic SignalingInflammasome and immune disordersPain Mechanisms and Treatments

Maturation and Release of Interleukin-1β by Lipopolysaccharide-primed Mouse Schwann Cells Require the Stimulation of P2X7 Receptors

Open access
Colomar, Aurore, Marty, Vincent, Médina, Chantal, Combe, Chantal, Parnet, Patricia, Amédée, Thierry·2003·Journal of Biological Chemistry

Abstract

The P2X7 receptor, mainly expressed by immune cells, is a ionotropic receptor activated by high concentration of extracellular ATP. It is involved in several processes relevant to immunomodulation and inflammation. Among these processes, the production of extracellular interleukin-1beta (IL-1beta), a pro-inflammatory cytokine, plays a major role in the activation of the cytokine network. We have investigated the role of P2X7 receptor and of an associated calcium-activated potassium conductance (BK channels) in IL-1beta maturation and releasing processes by Schwann cells. Lipopolysaccharide-primed Schwann cells synthesized large amounts of pro-IL-1beta but did not release detectable amounts of pro or mature IL-1beta. ATP on its own had no effect on the synthesis of pro-IL-1beta, but a co-treatment with lipopolysaccharide and ATP led to the maturation and the release of IL-1beta by Schwann cells. Both mechanisms were blocked by oxidized ATP. IL-1beta-converting enzyme (ICE), the caspase responsible for the maturation of pro-IL-1beta in IL-1beta, was activated by P2X7 receptor stimulation. The specific inhibition of ICE by the caspase inhibitor Ac-Tyr-Val-Ala-Asp-aldehyde blocked the maturation of IL-1beta. In searching for a link between the P2X7 receptor and the activation of ICE, we found that enhancing potassium efflux from Schwann cells upregulated the production of IL-1beta, while strongly reducing potassium efflux led to opposite effects. Blocking BK channels actually modulated IL-1beta release. Taken together, these results show that P2X7 receptor stimulation and associated BK channels, through the activation of ICE, leads to the maturation and the release of IL-1beta by immune-challenged Schwann cells.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.m304534200

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Direct treatment of ATP on primed microglia is sufficient for maturation and release of IL-1β in vitro via the P2X7 receptor expressed on microglia.

    “In support of this, direct treatment of ATP on primed microglia is sufficient for maturation and release of IL-1β in vitro (Halle et al, 2008) and does so via the P2X 7 receptor (Colomar et al, 2003) expressed on microglia (Monif et al, 2009).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 49 references couldn’t be matched to a known paper.

Research works printed but not linked: 5

  1. Kostura, M. J., Tocci, M. J., Limjuco, G., Chin, J., Cameron, P., Hillman, A. G., Chartrain, N. A., and Schmidt, J. A. (1989) Proc. Natl. Acad. Sci. U. S. A. 86, 5227-5231
  2. Hogquist, K. A., Nett, M. A., Unanue, E. R., and Chaplin, D. D. (1991) Proc. Natl. Acad. Sci. U. S. A. 88, 8485-8489
  3. Bergsteindottir, K., Brennan, A., Jessen, K. R., and Mirsky, R. (1992) Proc. Natl. Acad. Sci. U. S. A. 89, 9054 -9058
  4. Colomar, A., Marty, V., Combe, C., Me ´dina, C., Parnet, P., and Ame ´de ´e, T. (2003) J. Soc. Biol., in press
  5. Ame ´de ´e, T., and Despeyroux, S. (1995) Proc. R. Soc. Lond. B Biol. Sci. 259, 277-284

Cited by

Sorted by citations

Authors
Colomar, A., Marty, V., Médina, C., Combe, C., Parnet, P., & Amédée, T.
Affiliations
  • Université de Montréal (CA)
  • Inserm (FR)
Corresponding author
Amédée, Thierry
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2003-08
Volume
278
Issue
33
Pages
30732-30740
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2018698449
Cited by
103
References
49
Citations by year
2024: 1 · 2023: 4 · 2021: 2 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 7 · 2015: 10 · 2014: 7 · 2013: 7 · 2012: 6
FWCI
3.79
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ORBi UMONS (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
Keywords
P2X7 receptor, IL-1β, Schwann cells, lipopolysaccharide, ATP, BK channels, calcium-activated potassium channels, caspase activation, cytokine production, potassium efflux, oxidized ATP, neuroinflammation
MeSH terms
Adenosine Triphosphate, Animals, Cells, Cultured, Ganglia, Spinal, Interleukin-1, Lipopolysaccharides, Membrane Glycoproteins, Membrane Potentials, Organ Culture Techniques, Potassium, Protein Precursors, Receptors, Cell Surface, RNA, Messenger, Schwann Cells, Neuroimmunomodulation, Gene Expression, Cell Death, Receptors, Purinergic P2, Caspase 1, Potassium Channels, Calcium-Activated, Large-Conductance Calcium-Activated Potassium Channels, Toll-Like Receptors, Mice, Receptors, Purinergic P2X7

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review