Entry Name cGMP-PKG signaling pathway
Description Cyclic GMP (cGMP) is the intracellular second messenger that mediates the action of nitric oxide (NO) and natriuretic peptides (NPs), regulating a broad array of physiologic processes. The elevated intracellular cGMP level exerts its physiological action through two forms of cGMP-dependent protein kinase (PKG), cGMP-regulated phosphodiesterases (PDE2, PDE3) and cGMP-gated cation channels, among which PKGs might be the primary mediator. PKG1 isoform-specific activation of established substrates leads to reduction of cytosolic calcium concentration and/or decrease in the sensitivity of myofilaments to Ca2+ (Ca2+-desensitization), resulting in smooth muscle relaxation. In cardiac myocyte, PKG directly phosphorylates a member of the transient potential receptor canonical channel family, TRPC6, suppressing this nonselective ion channel's Ca2+ conductance, G-alpha-q agonist-induced NFAT activation, and myocyte hypertrophic responses. PKG also opens mitochondrial ATP-sensitive K+ (mitoKATP) channels and subsequent release of ROS triggers cardioprotection.
Class Environmental Information Processing; Signal transductionBRITE hierarchy
Pathway map Other DBs Reference Authors Francis SH, Busch JL, Corbin JD, Sibley D
Title cGMP-dependent protein kinases and cGMP phosphodiesterases in nitric oxide and cGMP action.
Journal Reference Authors Feil R, Kemp-Harper B
Title cGMP signalling: from bench to bedside. Conference on cGMP generators, effectors and therapeutic implications.
Journal Reference Authors Takimoto E
Title Cyclic GMP-dependent signaling in cardiac myocytes.
Journal Reference Authors Hofmann F, Feil R, Kleppisch T, Schlossmann J
Title Function of cGMP-dependent protein kinases as revealed by gene deletion.
Journal Reference Authors Kuebler WM
Title The Janus-faced regulation of endothelial permeability by cyclic GMP.
Journal Reference Authors Schlossmann J, Desch M
Title IRAG and novel PKG targeting in the cardiovascular system.
Journal Reference Authors Murthy KS
Title Signaling for contraction and relaxation in smooth muscle of the gut.
Journal Reference Authors Sanders KM, Koh SD, Ro S, Ward SM
Title Regulation of gastrointestinal motility--insights from smooth muscle biology.
Journal Reference Authors Gao Y
Title The multiple actions of NO.
Journal Reference Authors Wang X, Robinson PJ
Title Cyclic GMP-dependent protein kinase and cellular signaling in the nervous system.
Journal Reference Authors Tsai EJ, Kass DA
Title Cyclic GMP signaling in cardiovascular pathophysiology and therapeutics.
Journal Reference Authors Villanueva C, Giulivi C
Title Subcellular and cellular locations of nitric oxide synthase isoforms as determinants of health and disease.
Journal Reference Authors Schlossmann J, Hofmann F
Title cGMP-dependent protein kinases in drug discovery.
Journal Reference Authors Kass DA, Champion HC, Beavo JA
Title Phosphodiesterase type 5: expanding roles in cardiovascular regulation.
Journal Reference Authors Uckert S, Hedlund P, Andersson KE, Truss MC, Jonas U, Stief CG
Title Update on phosphodiesterase (PDE) isoenzymes as pharmacologic targets in urology: present and future.
Journal Reference Authors Yan C, Kim D, Aizawa T, Berk BC
Title Functional interplay between angiotensin II and nitric oxide: cyclic GMP as a key mediator.
Journal Reference Authors McKinsey TA, Kass DA
Title Small-molecule therapies for cardiac hypertrophy: moving beneath the cell surface.
Journal Reference Authors Koitabashi N, Aiba T, Hesketh GG, Rowell J, Zhang M, Takimoto E, Tomaselli GF, Kass DA
Title Cyclic GMP/PKG-dependent inhibition of TRPC6 channel activity and expression negatively regulates cardiomyocyte NFAT activation Novel mechanism of cardiac stress modulation by PDE5 inhibition.
Journal Reference Authors Costa AD, Pierre SV, Cohen MV, Downey JM, Garlid KD
Title cGMP signalling in pre- and post-conditioning: the role of mitochondria.
Journal Reference Authors Boengler K, Schulz R, Heusch G
Title Loss of cardioprotection with ageing.
Journal Reference Authors Gao Y, Portugal AD, Liu J, Negash S, Zhou W, Tian J, Xiang R, Longo LD, Raj JU
Title Preservation of cGMP-induced relaxation of pulmonary veins of fetal lambs exposed to chronic high altitude hypoxia: role of PKG and Rho kinase.
Journal Reference Authors Li Z, Xi X, Du X
Title A mitogen-activated protein kinase-dependent signaling pathway in the activation of platelet integrin alpha IIbbeta3.
Journal Reference Authors Xie J, Cha SK, An SW, Kuro-O M, Birnbaumer L, Huang CL
Title Cardioprotection by Klotho through downregulation of TRPC6 channels in the mouse heart.
Journal Related map04270 Vascular smooth muscle contraction
KO pathway
