Cited by 79Protein Kinase Regulation and GTPase SignalingPI3K/AKT/mTOR signaling in cancerCellular transport and secretion

GPCR activation of Ras and PI3Kγ in neutrophils depends on PLCβ2/β3 and the RasGEF RasGRP4

Open access
Suire, Sabine, Lécureuil, Charlotte, Anderson, Karen E, Damoulakis, George, Niewczas, Izabella, Davidson, Keith, Guillou, Hervé, Pan, Dingxin +3 more·2012·The EMBO Journal

Abstract

The molecular mechanisms by which receptors regulate the Ras Binding Domains of the PIP3-generating, class I PI3Ks remain poorly understood, despite their importance in a range of biological settings, including tumorigenesis, activation of neutrophils by pro-inflammatory mediators, chemotaxis of Dictyostelium and cell growth in Drosophila. We provide evidence that G protein-coupled receptors (GPCRs) can stimulate PLCb2/b3 and diacylglycerol- dependent activation of the RasGEF, RasGRP4 in neutrophils. The genetic loss of RasGRP4 phenocopies knock-in of a Ras-insensitive version of PI3Kc in its effects on PI3Kc-dependent PIP3 accumulation, PKB activation, chemokinesis and reactive oxygen species (ROS) formation. These results establish a new mechanism by which GPCRs can stimulate Ras, and the broadly important principle that PLCs can control activation of class I PI3Ks.

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Crossref · 10.1038/emboj.2012.167

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  • PKC, Munc13 and RasGRP4 are regulated by transient changes in DAG.

    “Members of the PKC and Munc13 (mammalian uncoordinated-13) family as well as RasGRP4 (Ras guanyl-releasing protein 4) are prime examples of proteins that are regulated by transient changes in DAG [51–53].”

    From Phosphatidylinositol(4,5)bisphosphate: diverse functions at the plasma membrane (2020) · cites this paper as [51]

    In “The molecular mechanism regulating activation of RasGRP4” (page not available), the paper identifies RasGRP4 as DAG-binding and describes PKCs as DAG-regulated effectors. Our copy does not address Munc13 or establish that transient DAG changes regulate all three protein groups. (LLM, conf=0.86)

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Authors
Suire, S., Lécureuil, C., Anderson, K. E., Damoulakis, G., Niewczas, I., Davidson, K., Guillou, H., Pan, D., Clark, J., Hawkins, P. T., & Stephens, L.
Affiliations
  • Babraham Institute (GB)
  • Babraham Bioscience Technologies (United Kingdom) (GB)
Corresponding author
Stephens, Len
Venue
The EMBO Journal
Published
2012-06-22
Volume
31
Issue
14
Pages
3118-3129
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2145377609
Cited by
77
References
60
Citations by year
2026: 2 · 2025: 7 · 2024: 5 · 2023: 9 · 2022: 4 · 2021: 5 · 2020: 11 · 2019: 6 · 2018: 2 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 6 · 2013: 11 · 2012: 2
FWCI
2.83
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • HAL (submittedVersion)
Funders
  • Yale University
  • Wellcome Trust
  • British Lung Foundation
  • Biotechnology and Biological Sciences Research Council (C20177, BBS/E/B/000C0411, BB/D013593/1, BBS/E/B/0000C238)
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 › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
G protein-coupled receptors, Ras, PI3Kγ, PLCβ2, PLCβ3, neutrophils, diacylglycerol, phosphatidylinositol 3,4,5-trisphosphate, chemokinesis, reactive oxygen species, receptor signaling
MeSH terms
Animals, Cell Line, Enzyme Activation, Humans, Neutrophils, Mice, Knockout, ras Proteins, ras Guanine Nucleotide Exchange Factors, Receptors, G-Protein-Coupled, Proto-Oncogene Proteins c-akt, Mice, Phospholipase C beta, Class Ib Phosphatidylinositol 3-Kinase

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