Entry
Name
Vascular smooth muscle contraction - Rattus norvegicus (rat)
Description
The vascular smooth muscle cell (VSMC) is a highly specialized cell whose principal function is contraction. On contraction, VSMCs shorten, thereby decreasing the diameter of a blood vessel to regulate the blood flow and pressure.
The principal mechanisms that regulate the contractile state of VSMCs are changes in cytosolic Ca2+ concentration ([Ca2+]c). In response to vasoconstrictor stimuli, Ca2+ is mobilized from intracellular stores and/or the extracellular space to increase [Ca2+]c in VSMCs. The increase in [Ca2+]c, in turn, activates the Ca2+-CaM-MLCK pathway and stimulates MLC20 phosphorylation, leading to myosin-actin interactions and, hence, the development of contractile force. The sensitivity of contractile myofilaments or MLC20 phosphorylation to Ca2+ can be secondarily modulated by other signaling pathways. During receptor stimulation, the contractile force is greatly enhanced by the inhibition of myosin phosphatase. Rho/Rho kinase, PKC, and arachidonic acid have been proposed to play a pivotal role in this enhancement.
The signaling events that mediate relaxation include the removal of a contractile agonist (passive relaxation) and activation of cyclic nucleotide-dependent signaling pathways in the continued presence of a contractile agonist (active relaxation). Active relaxation occurs through the inhibition of both Ca2+ mobilization and myofilament Ca2+ sensitivity in VSMCs.
Class
Organismal Systems; Circulatory system
BRITE hierarchy
Pathway map
rno04270 Vascular smooth muscle contraction
Other DBs
Organism
Rattus norvegicus (rat) [GN:
rno ]
Gene
114004 Ppp1r14a; protein phosphatase 1 regulatory subunit 14A [KO:K12328 ]
114493 Cacna1f; voltage-dependent L-type calcium channel subunit alpha-1F [KO:K04853 ]
114593 Nppc; C-type natriuretic peptide precursor [KO:K12336 ]
116670 Ppp1r12a; protein phosphatase 1 regulatory subunit 12A [KO:K06270 ]
24180 Agtr1a; type-1 angiotensin II receptor A [KO:K04166 ]
24221 Avp; vasopressin-neurophysin 2-copeptin preproprotein [KO:K05242 ]
24239 Cacna1c; voltage-dependent L-type calcium channel subunit alpha-1C [KO:K04850 ]
24241 Calca; calcitonin gene-related peptide 1 isoform Cgrp preproprotein [KO:K12332 ]
24326 Ednra; endothelin-1 receptor precursor [KO:K04197 ]
24602 Nppa; natriuretic peptides A precursor [KO:K12334 ]
24654 Plcb1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 [KO:K05858 ] [EC:3.1.4.11 ]
24668 Ppp1ca; serine/threonine-protein phosphatase PP1-alpha catalytic subunit [KO:K06269 ] [EC:3.1.3.16 ]
24669 Ppp1cc; serine/threonine-protein phosphatase PP1-gamma catalytic subunit isoform 1 [KO:K06269 ] [EC:3.1.3.16 ]
24896 Gnas; SCG6 (secretogranin VI) isoform SCG6 precursor [KO:K04632 ]
25029 Calcrl; calcitonin gene-related peptide type 1 receptor precursor [KO:K04577 ]
25031 Plcb4; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-4 [KO:K05858 ] [EC:3.1.4.11 ]
25105 Nppb; natriuretic peptides B precursor [KO:K12335 ]
25206 Gucy1b2; guanylate cyclase soluble subunit beta-2 isoform 2 [KO:K12319 ] [EC:4.6.1.2 ]
25262 Itpr1; inositol 1,4,5-trisphosphate receptor type 1 isoform 3 [KO:K04958 ]
25365 Actg2; actin, gamma-enteric smooth muscle [KO:K12315 ]
25594 Ppp1cb; serine/threonine-protein phosphatase PP1-beta catalytic subunit [KO:K06269 ] [EC:3.1.3.16 ]
25679 Itpr3; inositol 1,4,5-trisphosphate receptor type 3 [KO:K04960 ]
25687 Cald1; non-muscle caldesmon isoform 2 [KO:K12327 ]
29322 Plcb3; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3 [KO:K05858 ] [EC:3.1.4.11 ]
294961 Kcnmb2; calcium-activated potassium channel subunit beta-2 [KO:K04938 ]
296313 Myl9; myosin regulatory light polypeptide 9 [KO:K12755 ]
29716 Cacna1d; voltage-dependent L-type calcium channel subunit alpha-1D [KO:K04851 ]
297173 RSA-14-44; ras homolog gene family, member A [KO:K04513 ]
29747 Kcnmb1; calcium-activated potassium channel subunit beta-1 [KO:K04937 ]
303634 Gna13; guanine nucleotide-binding protein subunit alpha-13 [KO:K04639 ]
304447 RGD1559821; myosin light polypeptide 6-like [KO:K12751 ]
304813 Ppp1r12b; protein phosphatase 1 regulatory subunit 12B [KO:K12329 ]
308899 Irag1; inositol 1,4,5-triphosphate receptor associated 1 isoform b [KO:K12337 ]
310303 Kcnmb3; calcium-activated potassium channel subunit beta-3 [KO:K04939 ]
360426 Pla2g6; 85/88 kDa calcium-independent phospholipase A2 isoform 1 [KO:K16343 ] [EC:3.1.1.4 ]
367072 Arhgef12; rho guanine nucleotide exchange factor 12 [KO:K07532 ]
367415 Pla2g12b; group XIIB secretory phospholipase A2-like protein isoform X2 [KO:K01047 ] [EC:3.1.1.4 ]
499076 Ppp1r12c; protein phosphatase 1 regulatory subunit 12C [KO:K17457 ]
56820 Ramp3; receptor activity-modifying protein 3 precursor [KO:K08449 ]
58960 Map2k2; dual specificity mitogen-activated protein kinase kinase 2 [KO:K04369 ] [EC:2.7.12.2 ]
58965 Ramp1; receptor activity-modifying protein 1 precursor [KO:K08447 ]
58966 Ramp2; receptor activity-modifying protein 2 precursor [KO:K08448 ]
60323 Arhgef1; rho guanine nucleotide exchange factor 1 [KO:K12330 ]
66016 Kcnmb4; calcium-activated potassium channel subunit beta-4 [KO:K04941 ]
680912 Kcnu1; potassium channel subfamily U member 1 isoform X6 [KO:K05274 ]
682930 Cacna1s; voltage-dependent L-type calcium channel subunit alpha-1S [KO:K04857 ]
78966 Arhgef11; rho guanine nucleotide exchange factor 11 [KO:K12331 ]
81638 Agtr1b; type-1 angiotensin II receptor B [KO:K04166 ]
81662 Gna11; guanine nucleotide-binding protein subunit alpha-11 [KO:K04635 ]
81663 Gna12; guanine nucleotide-binding protein subunit alpha-12 [KO:K04346 ]
81666 Gnaq; guanine nucleotide-binding protein G(q) subunit alpha [KO:K04634 ]
81678 Itpr2; inositol 1,4,5-trisphosphate receptor type 2 [KO:K04959 ]
83731 Kcnma1; calcium-activated potassium channel subunit alpha-1 isoform 1 [KO:K04936 ]
85240 Plcb2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-2 [KO:K05858 ] [EC:3.1.4.11 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
Reference
Authors
Akata T
Title
Cellular and molecular mechanisms regulating vascular tone. Part 2: regulatory mechanisms modulating Ca2+ mobilization and/or myofilament Ca2+ sensitivity in vascular smooth muscle cells.
Journal
Reference
Authors
Ogut O, Brozovich FV
Title
Regulation of force in vascular smooth muscle.
Journal
Reference
Authors
Hilgers RH, Webb RC
Title
Molecular aspects of arterial smooth muscle contraction: focus on Rho.
Journal
Reference
Authors
Schlossmann J, Feil R, Hofmann F
Title
Signaling through NO and cGMP-dependent protein kinases.
Journal
Reference
Authors
Mehta PK, Griendling KK
Title
Angiotensin II cell signaling: physiological and pathological effects in the cardiovascular system.
Journal
Reference
Authors
Kim HR, Appel S, Vetterkind S, Gangopadhyay SS, Morgan KG
Title
Smooth muscle signalling pathways in health and disease.
Journal
Reference
Authors
Fukata Y, Amano M, Kaibuchi K
Title
Rho-Rho-kinase pathway in smooth muscle contraction and cytoskeletal reorganization of non-muscle cells.
Journal
Reference
Authors
Dimopoulos GJ, Semba S, Kitazawa K, Eto M, Kitazawa T
Title
Ca2+-dependent rapid Ca2+ sensitization of contraction in arterial smooth muscle.
Journal
Reference
Authors
Hynynen MM, Khalil RA
Title
The vascular endothelin system in hypertension--recent patents and discoveries.
Journal
Reference
Authors
Brain SD, Grant AD
Title
Vascular actions of calcitonin gene-related peptide and adrenomedullin.
Journal
Reference
Authors
Roman RJ
Title
P-450 metabolites of arachidonic acid in the control of cardiovascular function.
Journal
Reference
Authors
Surks HK
Title
cGMP-dependent protein kinase I and smooth muscle relaxation: a tale of two isoforms.
Journal
Reference
Authors
Vanhoutte PM
Title
Endothelium-dependent hyperpolarizations: the history.
Journal
Reference
Authors
Davis MJ, Hill MA
Title
Signaling mechanisms underlying the vascular myogenic response.
Journal
Reference
Authors
Fleming I.
Title
Cytochrome p450 and vascular homeostasis.
Journal
Reference
Authors
Carvajal JA, Germain AM, Huidobro-Toro JP, Weiner CP
Title
Molecular mechanism of cGMP-mediated smooth muscle relaxation.
Journal
Reference
Authors
Ko EA, Han J, Jung ID, Park WS
Title
Physiological roles of K+ channels in vascular smooth muscle cells.
Journal
Reference
Authors
Woodard GE, Rosado JA
Title
Natriuretic peptides in vascular physiology and pathology.
Journal
Reference
Authors
Berry C, Touyz R, Dominiczak AF, Webb RC, Johns DG
Title
Angiotensin receptors: signaling, vascular pathophysiology, and interactions with ceramide.
Journal
Reference
Authors
Hirano K, Hirano M, Kanaide H
Title
Regulation of myosin phosphorylation and myofilament Ca2+ sensitivity in vascular smooth muscle.
Journal
Reference
Authors
Freeman EJ, Ruehr ML, Dorman RV
Title
ANG II-induced translocation of cytosolic PLA2 to the nucleus in vascular smooth muscle cells.
Journal
Reference
Authors
Murphy TV, Spurrell BE, Hill MA
Title
Cellular signalling in arteriolar myogenic constriction: involvement of tyrosine phosphorylation pathways.
Journal
Related pathway
KO pathway