Entry
Name
Fc epsilon RI signaling pathway
Description
Fc epsilon RI-mediated signaling pathways in mast cells are initiated by the interaction of antigen (Ag) with IgE bound to the extracellular domain of the alpha chain of Fc epsilon RI. The activation pathways are regulated both positively and negatively by the interactions of numerous signaling molecules. Mast cells that are thus activated release preformed granules which contain biogenic amines (especially histamines) and proteoglycans (especially heparin). The activation of phospholipase A2 causes the release of membrane lipids followed by development of lipid mediators such as leukotrienes (LTC4, LTD4 and LTE4) and prostaglandins (especially PDG2). There is also secretion of cytokines, the most important of which are TNF-alpha, IL-4 and IL-5. These mediators and cytokines contribute to inflammatory responses.
Class
Organismal Systems; Immune system
BRITE hierarchy
Pathway map
ko04664 Fc epsilon RI signaling pathway
Other DBs
Orthology
K00922 PIK3CA_B_D; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha/beta/delta [EC:2.7.1.153 ]
K01116 PLCG1; phosphatidylinositol phospholipase C, gamma-1 [EC:3.1.4.11 ]
K02649 PIK3R1_2_3; phosphoinositide-3-kinase regulatory subunit alpha/beta/delta
K03084 SHIP1, INPP5D; phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase 1 [EC:3.1.3.86 ]
K03156 TNF, TNFA; tumor necrosis factor superfamily, member 2
K04364 GRB2; growth factor receptor-bound protein 2
K04366 RAF1; RAF proto-oncogene serine/threonine-protein kinase [EC:2.7.11.1 ]
K04368 MAP2K1, MEK1; mitogen-activated protein kinase kinase 1 [EC:2.7.12.2 ]
K04369 MAP2K2, MEK2; mitogen-activated protein kinase kinase 2 [EC:2.7.12.2 ]
K04392 RAC1; Ras-related C3 botulinum toxin substrate 1
K04430 MAP2K4, MKK4; mitogen-activated protein kinase kinase 4 [EC:2.7.12.2 ]
K04431 MAP2K7, MKK7; mitogen-activated protein kinase kinase 7 [EC:2.7.12.2 ]
K04432 MAP2K3, MKK3; mitogen-activated protein kinase kinase 3 [EC:2.7.12.2 ]
K04433 MAP2K6, MKK6; mitogen-activated protein kinase kinase 6 [EC:2.7.12.2 ]
K04440 JNK; mitogen-activated protein kinase 8/9/10 (c-Jun N-terminal kinase) [EC:2.7.11.24 ]
K05427 CSF2, GMCSF; granulocyte-macrophage colony-stimulating factor
K05730 VAV; guanine nucleotide exchange factor VAV
K05859 PLCG2; phosphatidylinositol phospholipase C, gamma-2 [EC:3.1.4.11 ]
K06276 PDPK1; 3-phosphoinositide dependent protein kinase-1 [EC:2.7.11.1 ]
K06856 IGH; immunoglobulin heavy chain
K07361 LCP2; lymphocyte cytosolic protein 2
K07362 LAT; linker for activation of T cells family member 1
K07827 KRAS, KRAS2; GTPase KRas
K07860 RAC2; Ras-related C3 botulinum toxin substrate 2
K07861 RAC3; Ras-related C3 botulinum toxin substrate 3
K07983 FCER1G; high affinity immunoglobulin epsilon receptor subunit gamma
K08089 FCER1A; high affinity immunoglobulin epsilon receptor subunit alpha
K08090 MS4A2, FCER1B; high affinity immunoglobulin epsilon receptor subunit beta
K08091 GAB2; GRB2-associated-binding protein 2
K20735 ALOX5AP, FLAP; arachidonate 5-lipoxygenase-activating protein
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
C05981 Phosphatidylinositol-3,4,5-trisphosphate
Reference
Authors
Kawakami T, Galli SJ.
Title
Regulation of mast-cell and basophil function and survival by IgE.
Journal
Reference
Authors
Siraganian RP.
Title
Mast cell signal transduction from the high-affinity IgE receptor.
Journal
Reference
Authors
Janeway CA, Travers P, Walport M, Shlomchik MJ.
Title
Immunobiology 6th edition
Journal
Garland Science Publishing (2005)
Reference
Authors
Turner H, Kinet JP.
Title
Signalling through the high-affinity IgE receptor Fc epsilonRI.
Journal
Reference
Authors
Gilfillan AM, Tkaczyk C.
Title
Integrated signalling pathways for mast-cell activation.
Journal
Reference
Authors
Nadler MJ, Matthews SA, Turner H, Kinet JP.
Title
Signal transduction by the high-affinity immunoglobulin E receptor Fc epsilon RI: coupling form to function.
Journal
Reference
Authors
Gu H, Saito K, Klaman LD, Shen J, Fleming T, Wang Y, Pratt JC, Lin G, Lim B, Kinet JP, Neel BG.
Title
Essential role for Gab2 in the allergic response.
Journal
Reference
Authors
Nadler MJ, Kinet JP.
Title
Uncovering new complexities in mast cell signaling.
Journal
Related pathway
ko00590 Arachidonic acid metabolism
ko04070 Phosphatidylinositol signaling system