Entry
Name
Oxytocin signaling pathway - Ursus americanus (American black bear)
Description
Oxytocin (OT) is a nonapeptide synthesized by the magno-cellular neurons located in the supraoptic (SON) and paraventricular (PVN) nuclei of the hypothalamus. It exerts a wide variety of central and peripheral effects. However, its best-known and most well-established roles are stimulation of uterine contractions during parturition and milk release during lactation. Oxytocin also influences cardiovascular regulation and various social behaviors. The actions of OT are all mediated by one type of OT receptor (OTR). This is a transmembrane receptor belonging to the G-protein-coupled receptor superfamily. The main signaling pathway is the Gq/PLC/Ins3 pathway, but the MAPK and the RhoA/Rho kinase pathways are also activated, contributing to increased prostaglandin production and direct contractile effect on myometrial cells. In the cardiovascular system, OTR is associated with the ANP-cGMP and NO-cGMP pathways, which reduce the force and rate of contraction and increase vasodilatation.
Class
Organismal Systems; Endocrine system
BRITE hierarchy
Pathway map
Ortholog table
Organism
Ursus americanus (American black bear) [GN:
uar ]
Gene
123781527 GNAQ; guanine nucleotide-binding protein G(q) subunit alpha isoform X1 [KO:K04634 ]
123791493 MEF2C; myocyte-specific enhancer factor 2C isoform X1 [KO:K04454 ]
123787940 ELK1; LOW QUALITY PROTEIN: ETS domain-containing protein Elk-1 [KO:K04375 ]
123778781 TRPM2; transient receptor potential cation channel subfamily M member 2 isoform X1 [KO:K04977 ] [EC:3.6.1.13 ]
123779714 KCNJ12; ATP-sensitive inward rectifier potassium channel 12 [KO:K05005 ]
123776361 KCNJ14; ATP-sensitive inward rectifier potassium channel 14 [KO:K05007 ]
123799710 PLCB1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
123804253 PLCB2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-2 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
123777895 CACNA1C; voltage-dependent L-type calcium channel subunit alpha-1C [KO:K04850 ]
123798762 CACNA1D; voltage-dependent L-type calcium channel subunit alpha-1D isoform X1 [KO:K04851 ]
123797184 CACNA1F; voltage-dependent L-type calcium channel subunit alpha-1F isoform X1 [KO:K04853 ]
123785763 CACNA1S; LOW QUALITY PROTEIN: voltage-dependent L-type calcium channel subunit alpha-1S [KO:K04857 ]
123779537 CACNB1; voltage-dependent L-type calcium channel subunit beta-1 isoform X1 [KO:K04862 ]
123785661 CACNB2; voltage-dependent L-type calcium channel subunit beta-2 isoform X1 [KO:K04863 ]
123794793 CACNB3; voltage-dependent L-type calcium channel subunit beta-3 isoform X1 [KO:K04864 ]
123782064 CACNB4; voltage-dependent L-type calcium channel subunit beta-4 isoform X1 [KO:K04865 ]
123789347 CACNA2D1; voltage-dependent calcium channel subunit alpha-2/delta-1 isoform X1 [KO:K04858 ]
123798700 CACNA2D2; voltage-dependent calcium channel subunit alpha-2/delta-2 isoform X1 [KO:K04859 ]
123798769 CACNA2D3; voltage-dependent calcium channel subunit alpha-2/delta-3 isoform X1 [KO:K04860 ]
123778232 CACNA2D4; voltage-dependent calcium channel subunit alpha-2/delta-4 [KO:K04861 ]
123803189 CACNG1; voltage-dependent calcium channel gamma-1 subunit [KO:K04866 ]
123780589 CACNG2; voltage-dependent calcium channel gamma-2 subunit [KO:K04867 ]
123778843 CACNG3; voltage-dependent calcium channel gamma-3 subunit [KO:K04868 ]
123803085 CACNG4; voltage-dependent calcium channel gamma-4 subunit [KO:K04869 ]
123803011 CACNG5; voltage-dependent calcium channel gamma-5 subunit [KO:K04870 ]
123787038 CACNG6; voltage-dependent calcium channel gamma-6 subunit [KO:K04871 ]
123786994 CACNG7; voltage-dependent calcium channel gamma-7 subunit isoform X1 [KO:K04872 ]
123787039 CACNG8; voltage-dependent calcium channel gamma-8 subunit [KO:K04873 ]
123799165 ITPR1; inositol 1,4,5-trisphosphate receptor type 1 isoform X1 [KO:K04958 ]
123788880 PPP3CA; serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
123782828 PPP3CB; serine/threonine-protein phosphatase 2B catalytic subunit beta isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
123777460 PPP3CC; serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
123787495 NFATC1; nuclear factor of activated T-cells, cytoplasmic 1 isoform X1 [KO:K04446 ]
123799385 NFATC2; nuclear factor of activated T-cells, cytoplasmic 2 isoform X1 [KO:K17332 ]
123803502 NFATC3; nuclear factor of activated T-cells, cytoplasmic 3 isoform X1 [KO:K17333 ]
123795735 NFATC4; nuclear factor of activated T-cells, cytoplasmic 4 isoform X1 [KO:K17334 ]
123802720 PRKAB2; 5'-AMP-activated protein kinase subunit beta-2 isoform X1 [KO:K07199 ]
123788293 PRKAB1; 5'-AMP-activated protein kinase subunit beta-1 [KO:K07199 ]
123794785 PRKAG1; 5'-AMP-activated protein kinase subunit gamma-1 isoform X1 [KO:K07200 ]
123788759 PRKAG2; 5'-AMP-activated protein kinase subunit gamma-2 isoform X1 [KO:K07200 ]
123779467 PRKAG3; 5'-AMP-activated protein kinase subunit gamma-3 [KO:K07200 ]
123793341 CAMK2D; calcium/calmodulin-dependent protein kinase type II subunit delta isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
123803651 CAMK2A; calcium/calmodulin-dependent protein kinase type II subunit alpha isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
123789460 CAMK2B; calcium/calmodulin-dependent protein kinase type II subunit beta isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
123782837 CAMK2G; calcium/calmodulin-dependent protein kinase type II subunit gamma isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
123780848 PPP1R12A; protein phosphatase 1 regulatory subunit 12A isoform X1 [KO:K06270 ]
123785739 PPP1R12B; protein phosphatase 1 regulatory subunit 12B isoform X1 [KO:K12329 ]
123786950 PPP1R12C; protein phosphatase 1 regulatory subunit 12C isoform X1 [KO:K17457 ]
123803290 LOW QUALITY PROTEIN: guanine nucleotide-binding protein G(s) subunit alpha isoforms XLas-like [KO:K04632 ]
123795104 GNAI3; guanine nucleotide-binding protein G(i) subunit alpha-3 [KO:K04630 ]
123789354 GNAI1; guanine nucleotide-binding protein G(i) subunit alpha-1 [KO:K04630 ]
123798684 GNAI2; guanine nucleotide-binding protein G(i) subunit alpha-2 [KO:K04630 ]
123798421 GNAO1; guanine nucleotide-binding protein G(o) subunit alpha isoform X1 [KO:K04534 ]
123789397 PIK3CG; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit gamma isoform [KO:K21289 ] [EC:2.7.1.153 ]
123792094 PIK3R6; phosphoinositide 3-kinase regulatory subunit 6 isoform X1 [KO:K21290 ]
123792093 PIK3R5; phosphoinositide 3-kinase regulatory subunit 5 isoform X1 [KO:K21290 ]
123781945 KCNJ3; G protein-activated inward rectifier potassium channel 1 [KO:K04997 ]
123802678 KCNJ6; G protein-activated inward rectifier potassium channel 2 [KO:K05000 ]
123783535 KCNJ9; G protein-activated inward rectifier potassium channel 3 [KO:K05002 ]
123783193 KCNJ5; G protein-activated inward rectifier potassium channel 4 [KO:K04999 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
Reference
Authors
Devost D, Wrzal P, Zingg HH
Title
Oxytocin receptor signalling.
Journal
Reference
Authors
Viero C, Shibuya I, Kitamura N, Verkhratsky A, Fujihara H, Katoh A, Ueta Y, Zingg HH, Chvatal A, Sykova E, Dayanithi G
Title
REVIEW: Oxytocin: Crossing the bridge between basic science and pharmacotherapy.
Journal
Reference
Authors
Gutkowska J, Jankowski M
Title
Oxytocin revisited: its role in cardiovascular regulation.
Journal
Reference
Authors
Vrachnis N, Malamas FM, Sifakis S, Deligeoroglou E, Iliodromiti Z
Title
The oxytocin-oxytocin receptor system and its antagonists as tocolytic agents.
Journal
Reference
Authors
Tom N, Assinder SJ
Title
Oxytocin in health and disease.
Journal
Reference
Authors
Strakova Z, Copland JA, Lolait SJ, Soloff MS
Title
ERK2 mediates oxytocin-stimulated PGE2 synthesis.
Journal
Reference
Authors
Slater DM, Zervou S, Thornton S
Title
Prostaglandins and prostanoid receptors in human pregnancy and parturition.
Journal
J Soc Gynecol Investig 9:118-24 (2002)
Reference
Authors
Shmygol A, Gullam J, Blanks A, Thornton S
Title
Multiple mechanisms involved in oxytocin-induced modulation of myometrial contractility.
Journal
Reference
Authors
Tahara M, Morishige K, Sawada K, Ikebuchi Y, Kawagishi R, Tasaka K, Murata Y
Title
RhoA/Rho-kinase cascade is involved in oxytocin-induced rat uterine contraction.
Journal
Reference
Authors
Slattery MM, Morrison JJ
Title
Preterm delivery.
Journal
Reference
Authors
Pont JN, McArdle CA, Lopez Bernal A
Title
Oxytocin-stimulated NFAT transcriptional activation in human myometrial cells.
Journal
Reference
Authors
Gutkowska J, Jankowski M, Lambert C, Mukaddam-Daher S, Zingg HH, McCann SM
Title
Oxytocin releases atrial natriuretic peptide by combining with oxytocin receptors in the heart.
Journal
Reference
Authors
Antunes-Rodrigues J, de Castro M, Elias LL, Valenca MM, McCann SM
Title
Neuroendocrine control of body fluid metabolism.
Journal
Reference
Authors
Lee ES, Uhm KO, Lee YM, Kwon J, Park SH, Soo KH
Title
Oxytocin stimulates glucose uptake in skeletal muscle cells through the calcium-CaMKK-AMPK pathway.
Journal
Reference
Authors
Cassoni P, Sapino A, Fortunati N, Munaron L, Chini B, Bussolati G
Title
Oxytocin inhibits the proliferation of MDA-MB231 human breast-cancer cells via cyclic adenosine monophosphate and protein kinase A.
Journal
Reference
Authors
Busnelli M, Peverelli E, Mantovani G, Spada A, Chini B
Title
Deciphering the specific role of G(alphai/o) isoforms: functional selective oxytocin ligands and somatostatin SST5 receptor mutants.
Journal
Reference
Authors
Reversi A, Rimoldi V, Brambillasca S, Chini B
Title
Effects of cholesterol manipulation on the signaling of the human oxytocin receptor.
Journal
Reference
Authors
Salmina AB, Lopatina O, Ekimova MV, Mikhutkina SV, Higashida H
Title
CD38/cyclic ADP-ribose system: a new player for oxytocin secretion and regulation of social behaviour.
Journal
Reference
Authors
Higashida H, Yokoyama S, Kikuchi M, Munesue T
Title
CD38 and its role in oxytocin secretion and social behavior.
Journal
Reference
Authors
Lopatina O, Inzhutova A, Salmina AB, Higashida H
Title
The roles of oxytocin and CD38 in social or parental behaviors.
Journal
Reference
Authors
Guse AH
Title
Second messenger function and the structure-activity relationship of cyclic adenosine diphosphoribose (cADPR).
Journal
Related pathway
KO pathway
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