Cited by 11Protein Kinase Regulation and GTPase SignalingReceptor Mechanisms and SignalingInflammatory mediators and NSAID effects

Inflammatory cytokines enhance muscarinic-mediated arachidonic acid release through p38 mitogen-activated protein kinase in A2058 cells

Wood, Michael W., Segal, Jeff A., Mark, Robert J., Ogden, Ann Marie, Felder, Christian C.·2000·Journal of Neurochemistry

Abstract

The human melanoma cell line A2058 expresses the Gq-coupled M5 subtype of muscarinic receptor. Stimulation with the cholinergic agonist, carbachol, induces a dose-dependent increase in arachidonic acid release. The carbachol-induced arachidonate release is potentiated two- to threefold by pretreatment of A2058 cells with either of the inflammatory cytokines, tumor necrosis factor-alpha or interleukin-1beta . Cytokine-induced enhancement of muscarinic-mediated arachidonic acid release peaks near 1 h. Western analysis suggests that both cytokines are capable of activating the nuclear factor-kappaB (NF-kappaB) and p38 mitogen-activated protein kinase (MAPK) pathways. Anisomycin (1 microM) treatment mimics the cytokine-induced enhancement of arachidonic acid production and activates the p38 MAPK pathway, but does not activate the NF-kappaB pathway. Furthermore, pre-treatment of A2058 cells with the putative p38 MAPK inhibitor, SB202190, ablates the cytokine-dependent augmentation without interfering with the muscarinic-mediated arachidonic acid release in untreated cells. Moreover, cytokine treatment does not affect other M5-coupled pathways (e.g., phospholipase C activity or intracellular Ca2+ mobilization), suggesting that p38 MAPK activation principally modulates muscarinic-mediated phospholipase A2 activity. Finally, in primary cultures of cells taken from rat cerebellum, key aspects of this finding are repeated in cultures enriched for glia, but not in cultures enriched for granule neurons.

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Crossref · 10.1046/j.1471-4159.2000.0742033.x

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45 of 45 references verified0 citation errors · 0 not checkable

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Authors
Wood, M. W., Segal, J. A., Mark, R. J., Ogden, A. M., & Felder, C. C.
Affiliations
Eli Lilly (United States) (US)
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2000-05
Volume
74
Issue
5
Pages
2033-2040
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2004265235
Cited by
11
References
45
Citations by year
2022: 1 · 2018: 1 · 2013: 1
FWCI
0.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Health Sciences › Medicine › Pharmacology › Inflammatory mediators and NSAID effects
Keywords
arachidonic acid release, p38 MAPK, inflammatory cytokines, TNF-α, IL-1β, nuclear factor-kappaB, phospholipase A2, carbachol, anisomycin, SB202190, Gq-coupled receptors
MeSH terms
Animals, Anisomycin, Carbachol, Cerebellum, Cerebral Cortex, Enzyme Activation, Enzyme Inhibitors, Humans, Imidazoles, Interleukin-1, Muscarine, Pyridines, Tumor Cells, Cultured, Tumor Necrosis Factor-alpha, Cytokines, NF-kappa B, Arachidonic Acid, Cholinergic Agonists, Inflammation Mediators, Mitogen-Activated Protein Kinases, p38 Mitogen-Activated Protein Kinases, Rats

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