Cited by 396Immune Response and InflammationProtein Kinase Regulation and GTPase SignalingNF-κB Signaling Pathways

The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.

Bacterial lipopolysaccharide induces tyrosine phosphorylation and activation of mitogen-activated protein kinases in macrophages.

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Weinstein, S.L., Sanghera, J.S., Lemke, K, DeFranco, A.L., Pelech, S.L.·1992·Journal of Biological Chemistry

Abstract

Bacterial lipopolysaccharide (LPS) is a potent activator of antibacterial responses by macrophages. Following LPS stimulation, the tyrosine phosphorylation of several proteins is rapidly increased in macrophages, and this event appears to mediate some responses to LPS. We now report that two of these tyrosine phosphoproteins of 41 and 44 kDa are isoforms of mitogen-activated protein (MAP) kinase. Each of these proteins was reactive with anti-MAP kinase antibodies and comigrated with MAP kinase activity in fractions eluted from a MonoQ anion-exchange column. Following LPS stimulation, column fractions containing the tyrosine phosphorylated forms of p41 and p44 exhibited increased MAP kinase activity. Inhibition of LPS-induced tyrosine phosphorylation of these proteins was accompanied by inhibition of MAP kinase activity. Additionally, induction of p41/p44 tyrosine phosphorylation and MAP kinase activity by LPS appeared to be independent of activation of protein kinase C, even though phorbol esters also induced these responses. These results demonstrate that LPS induces the tyrosine phosphorylation and activation of at least two MAP kinase isozymes. Since MAP kinases appear to modulate cellular processes in response to extracellular signals, these kinases may be important targets for LPS action in macrophages.

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Crossref · 10.1016/s0021-9258(18)42133-3

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Research works printed but not linked: 4

  1. Pabst, 1989, 6, 361
  2. Barriere, 1991, Patient Care, 25, 95
  3. Posada, 1991, Mol. Cell Biol., 11, 2517
  4. Cooper, 1985, Mol. Cell Biol., 5, 3304

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Metadata

Authors
Weinstein, S. L., Sanghera, J. S., Lemke, K., DeFranco, A. L., & Pelech, S. L.
Affiliations
  • University of California, San Francisco (US)
  • Genentech (US)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1992-07
Volume
267
Issue
21
Pages
14955-14962
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1671728707
Cited by
396
References
31
Citations by year
2026: 2 · 2024: 3 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 4 · 2018: 5 · 2017: 8 · 2016: 4 · 2015: 4 · 2014: 4 · 2013: 4 · 2012: 8
FWCI
8.52
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI20038)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
Keywords
lipopolysaccharide, macrophages, tyrosine phosphorylation, mitogen-activated protein kinase, signal transduction, phorbol ester, antibacterial response
MeSH terms
Amino Acid Sequence, Animals, Cells, Cultured, Chromatography, Ion Exchange, Electrophoresis, Polyacrylamide Gel, Enzyme Activation, Isoenzymes, Lipopolysaccharides, Macrophages, Molecular Sequence Data, Peptides, Phosphorylation, Precipitin Tests, Protein Kinase C, Protein Kinases, Quinones, Tyrosine, Blotting, Western, Benzoquinones, Rifabutin, Calcium-Calmodulin-Dependent Protein Kinases, Lactams, Macrocyclic, Protein Kinase Inhibitors, Mice

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