Gene interactions and pathways from curated databases and text-mining
Mol Cell Biol 2001, PMID: 11340169

Vav1 regulates phospholipase cgamma activation and calcium responses in mast cells.

Manetz, T S; Gonzalez-Espinosa, C; Arudchandran, R; Xirasagar, S; Tybulewicz, V; Rivera, J

The hematopoietic cell-specific protein Vav1 is a substrate of tyrosine kinases activated following engagement of many receptors, including FcepsilonRI. Vav1-deficient mice contain normal numbers of mast cells but respond more weakly than their normal counterparts to a passive systemic anaphylaxis challenge. Vav1-deficient bone marrow-derived mast cells also exhibited reduced degranulation and cytokine production, although tyrosine phosphorylation of FcepsilonRI, Syk, and LAT (linker for activation of T cells) was normal. In contrast, tyrosine phosphorylation of phospholipase Cgamma1 (PLCgamma1) and PLCgamma2 and calcium mobilization were markedly inhibited. Reconstitution of deficient mast cells with Vav1 restored normal tyrosine phosphorylation of PLCgamma1 and PLCgamma2 and calcium responses. Thus, Vav1 is essential to FcepsilonRI-mediated activation of PLCgamma and calcium mobilization in mast cells. In addition to its known role as an activator of Rac1 GTPases, these findings demonstrate a novel function for Vav1 as a regulator of PLCgamma-activated calcium signals.

Document information provided by NCBI PubMed

Text Mining Data

phospholipase cgamma → Vav1: " Vav1 regulates phospholipase cgamma activation and calcium responses in mast cells "

Manually curated Databases

  • NCI Pathway Database Fc-epsilon receptor I signaling in mast cells: VAV1 (VAV1) → Antigen/IgE/Fc epsilon R1/LYN/SYK complex (IGHE-SYK-LYN-MS4A2-FCER1G-FCER1A) (modification, activates)
    Evidence: assay, other species
  • NCI Pathway Database Fc-epsilon receptor I signaling in mast cells: VAV1 (VAV1) → PI3K complex (PIK3CA-PIK3R1) (modification, activates)
    Evidence: assay, other species
  • NCI Pathway Database Fc-epsilon receptor I signaling in mast cells: Antigen/IgE/Fc epsilon R1/LYN/SYK complex (IGHE-SYK-LYN-MS4A2-FCER1G-FCER1A) → PI3K complex (PIK3CA-PIK3R1) (modification, activates)
    Evidence: assay, other species
  • Reactome Reaction: GRAP2 → VAV3 (indirect_complex)
  • Reactome Reaction: SOS1 → VAV3 (indirect_complex)
  • Reactome Reaction: GRAP2 → VAV1 (indirect_complex)
  • Reactome Reaction: LAT → VAV3 (indirect_complex)
  • Reactome Reaction: VAV1 → SHC1 (indirect_complex)
  • Reactome Reaction: SOS1 → VAV1 (indirect_complex)
  • Reactome Reaction: VAV1 → LAT (reaction)
  • Reactome Reaction: LCP2 → VAV3 (reaction)
  • Reactome Reaction: GRAP2 → VAV3 (reaction)
  • Reactome Reaction: SOS1 → VAV1 (reaction)
  • Reactome Reaction: GRAP2 → VAV2 (reaction)
  • Reactome Reaction: VAV2 → LAT (reaction)
  • Reactome Reaction: PLCG1 → VAV1 (reaction)
  • Reactome Reaction: GRAP2 → VAV1 (reaction)
  • Reactome Reaction: GRB2 → VAV2 (reaction)
  • Reactome Reaction: LCP2 → VAV1 (indirect_complex)
  • Reactome Reaction: LCP2 → VAV3 (indirect_complex)
  • Reactome Reaction: VAV2 → SHC1 (indirect_complex)
  • Reactome Reaction: PLCG1 → VAV1 (indirect_complex)
  • Reactome Reaction: LCP2 → VAV1 (reaction)
  • Reactome Reaction: LCP2 → VAV2 (indirect_complex)
  • Reactome Reaction: SOS1 → VAV2 (reaction)
  • Reactome Reaction: GRB2 → VAV1 (indirect_complex)
  • Reactome Reaction: GRB2 → VAV1 (reaction)
  • Reactome Reaction: VAV1 → SHC1 (reaction)
  • Reactome Reaction: SOS1 → VAV3 (reaction)
  • Reactome Reaction: VAV2 → SHC1 (reaction)
  • Reactome Reaction: PLCG2 → VAV1 (indirect_complex)
  • Reactome Reaction: PLCG2 → VAV2 (indirect_complex)
  • Reactome Reaction: VAV1 → LAT (indirect_complex)
  • Reactome Reaction: GRAP2 → VAV2 (indirect_complex)
  • Reactome Reaction: SHC1 → VAV3 (indirect_complex)
  • Reactome Reaction: PLCG2 → VAV3 (indirect_complex)
  • Reactome Reaction: PLCG2 → VAV3 (reaction)
  • Reactome Reaction: PLCG2 → VAV1 (reaction)
  • Reactome Reaction: PLCG2 → VAV2 (reaction)
  • Reactome Reaction: GRB2 → VAV3 (reaction)
  • Reactome Reaction: PLCG1 → VAV2 (indirect_complex)
  • Reactome Reaction: GRB2 → VAV3 (indirect_complex)
  • Reactome Reaction: GRB2 → VAV2 (indirect_complex)
  • Reactome Reaction: SOS1 → VAV2 (indirect_complex)
  • Reactome Reaction: SHC1 → VAV3 (reaction)
  • Reactome Reaction: PLCG1 → VAV3 (indirect_complex)
  • Reactome Reaction: PLCG1 → VAV3 (reaction)
  • Reactome Reaction: PLCG1 → VAV2 (reaction)
  • Reactome Reaction: LCP2 → VAV2 (reaction)
  • Reactome Reaction: LAT → VAV3 (reaction)
  • Reactome Reaction: VAV2 → LAT (indirect_complex)
In total, 60 gene pairs are associated to this article in curated databases