Cited by 164Cell Adhesion Molecules ResearchPlatelet Disorders and TreatmentsChemokine receptors and signaling

Tyrosine kinase Btk regulates E-selectin–mediated integrin activation and neutrophil recruitment by controlling phospholipase C (PLC) γ2 and PI3Kγ pathways

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Mueller, Helena, Stadtmann, Anika, Van Aken, Hugo, Hirsch, Emilio, Wang, Demin, Ley, Klaus, Zarbock, Alexander·2010·Blood

Abstract

Selectins mediate leukocyte rolling, trigger β2-integrin activation, and promote leukocyte recruitment into inflamed tissue. E-selectin binding to P-selectin glycoprotein ligand 1 (PSGL-1) leads to activation of an immunoreceptor tyrosine-based activation motif (ITAM)–dependent pathway, which in turn activates the spleen tyrosine kinase (Syk). However, the signaling pathway linking Syk to integrin activation after E-selectin engagement is unknown. To identify the pathway, we used different gene-deficient mice in autoperfused flow chamber, intravital microscopy, peritonitis, and biochemical studies. We report here that the signaling pathway downstream of Syk divides into a phospholipase C (PLC) γ2– and phosphoinositide 3-kinase (PI3K) γ–dependent pathway. The Tec family kinase Bruton tyrosine kinase (Btk) is required for activating both pathways, generating inositol-3,4,5-trisphosphate (IP3), and inducing E-selectin–mediated slow rolling. Inhibition of this signal-transduction pathway diminished Gαi-independent leukocyte adhesion to and transmigration through endothelial cells in inflamed postcapillary venules of the cremaster. Gαi-independent neutrophil recruitment into the inflamed peritoneal cavity was reduced in Btk−/− and Plcg2−/− mice. Our data demonstrate the functional importance of this newly identified signaling pathway mediated by E-selectin engagement.

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Crossref · 10.1182/blood-2009-11-254185

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  • PLCγ2 has a role in neutrophil recruitment via Btk in regulating E-selectin-mediated integrin activation, which facilitates leukocyte rolling and infiltration into inflamed tissues, and subsequent PI3Kγ pathways.

    “PLCγ2 also has a role in neutrophil recruitment via Btk in regulating E-selectin–mediated integrin activation, which facilitates leukocyte rolling and infiltration into inflamed tissues, and subsequent PI3Kγ pathways (87).”

    From The role of PLCγ2 in immunological disorders, cancer, and neurodegeneration (2021) · cites this paper as [87]

    The Discussion reports that Btk controls E-selectin–mediated slow rolling through PLCγ2- and PI3Kγ-dependent pathways, and that blocking PLCγ2 abolishes leukocyte extravasation and neutrophil recruitment into inflamed tissue. It describes those pathways as branches downstream of Btk, however, not PI3Kγ as a subsequent pathway downstream of PLCγ2. No page numbers are provided in the supplied passages. (LLM, conf=0.88)

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Authors
Mueller, H., Stadtmann, A., Van Aken, H., Hirsch, E., Wang, D., Ley, K., & Zarbock, A.
Affiliations
  • Max Planck Society (DE)
  • Department of Anesthesiology and Intensive Care Medicine, University of Münster, Münster, Germany;
  • University of Turin (IT)
  • Versiti Blood Center of Wisconsin (US)
  • La Jolla Institute for Immunology (US)
Venue
Blood
Published
2010-04-15
Volume
115
Issue
15
Pages
3118-3127
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2102637482
Cited by
164
References
51
Citations by year
2026: 9 · 2025: 7 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 9 · 2018: 13 · 2017: 7 · 2016: 11 · 2015: 11 · 2014: 8 · 2013: 14 · 2012: 18
FWCI
11.40
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Medicine
  • National Institute of Allergy and Infectious Diseases (R01AI079087)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
Keywords
Bruton's tyrosine kinase, E-selectin, integrin activation, neutrophil recruitment, PLCγ2, PI3Kγ, Syk signaling, leukocyte rolling, leukocyte adhesion, transmigration, inositol trisphosphate, Tec family kinases, peritonitis, cremaster muscle
MeSH terms
Agammaglobulinaemia Tyrosine Kinase, Animals, Cell Adhesion, Enzyme Activation, Mice, Inbred C57BL, Neutrophils, Phosphorylation, Protein-Tyrosine Kinases, Signal Transduction, CD18 Antigens, Chemokines, E-Selectin, GTP-Binding Protein alpha Subunits, Gi-Go, Phosphatidylinositol 3-Kinases, Neutrophil Infiltration, Leukocyte Rolling, p38 Mitogen-Activated Protein Kinases, Mice, Phospholipase C gamma

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