Target type: biologicalprocess
Any process that modulates the frequency, rate or extent of an adenylate cyclase-activating G protein-coupled receptor signaling pathway. [GOC:hjd, PMID:19246489]
The adenylate cyclase-activating G protein-coupled receptor (GPCR) signaling pathway plays a crucial role in cellular communication and regulation. This pathway involves a series of events triggered by the binding of extracellular ligands to GPCRs, leading to the activation of adenylate cyclase and the production of cyclic adenosine monophosphate (cAMP). The following steps detail the biological process:
1. **Ligand Binding:** The pathway begins with the binding of an extracellular ligand, such as a hormone, neurotransmitter, or sensory stimulus, to its specific GPCR. This binding event causes a conformational change in the receptor, exposing its intracellular domain.
2. **G Protein Activation:** The activated GPCR interacts with a heterotrimeric G protein, composed of alpha, beta, and gamma subunits. The receptor promotes the exchange of GDP for GTP on the alpha subunit, activating the G protein.
3. **Adenylate Cyclase Activation:** The activated alpha subunit, specifically the Gαs subtype, dissociates from the beta-gamma dimer and binds to adenylate cyclase, a membrane-bound enzyme responsible for cAMP synthesis. This interaction stimulates adenylate cyclase activity.
4. **cAMP Production:** Adenylate cyclase catalyzes the conversion of ATP to cAMP, a second messenger molecule that acts as a signaling intermediary within the cell.
5. **cAMP-Dependent Protein Kinase (PKA) Activation:** cAMP binds to and activates PKA, a protein kinase that phosphorylates specific target proteins, leading to downstream signaling events.
6. **Cellular Responses:** The phosphorylation of target proteins by PKA triggers a wide range of cellular responses, depending on the specific cell type and the signaling pathway involved. Examples include changes in gene expression, enzyme activity, cell growth, and differentiation.
7. **Signal Termination:** The signaling pathway is terminated by the hydrolysis of GTP to GDP by the intrinsic GTPase activity of the Gαs subunit. This process inactivates the Gαs subunit, allowing it to reassociate with the beta-gamma dimer and restoring the inactive state of the G protein. Additionally, cAMP phosphodiesterases degrade cAMP, reducing its concentration and further dampening the signal.
The regulation of this pathway is tightly controlled by a complex interplay of factors, including:
* **Ligand availability:** The concentration of the extracellular ligand influences the extent of GPCR activation and signaling.
* **GPCR expression and desensitization:** The number of GPCRs on the cell surface and their ability to be activated can be regulated by factors such as gene expression and receptor desensitization mechanisms.
* **G protein availability and regulation:** The expression levels and activity of different G protein subtypes can influence the pathway's sensitivity and specificity.
* **Adenylate cyclase activity:** The activity of adenylate cyclase can be modulated by various factors, including regulatory proteins and signaling molecules.
* **cAMP degradation:** The rate of cAMP degradation by phosphodiesterases can influence the duration and amplitude of the signal.
Disruptions in the regulation of the adenylate cyclase-activating GPCR signaling pathway can lead to various diseases. For example, mutations in GPCRs or G proteins can cause hyperactive signaling, contributing to conditions such as hyperthyroidism, hypertension, and cancer. Conversely, impaired signaling can lead to hypothyroidism, hypotension, and other disorders.
Overall, the adenylate cyclase-activating GPCR signaling pathway is a critical regulatory mechanism that governs diverse cellular processes. Its intricate regulation ensures appropriate cellular responses to extracellular stimuli, maintaining homeostasis and enabling proper cellular function.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| cAMP-specific 3',5'-cyclic phosphodiesterase 4A | A 3,5-cyclic-AMP phosphodiesterase 4A that is encoded in the genome of human. [PRO:DNx, UniProtKB:P27815] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| theophylline | dimethylxanthine | adenosine receptor antagonist; anti-asthmatic drug; anti-inflammatory agent; bronchodilator agent; drug metabolite; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; fungal metabolite; human blood serum metabolite; immunomodulator; muscle relaxant; vasodilator agent | |
| caffeine | purine alkaloid; trimethylxanthine | adenosine A2A receptor antagonist; adenosine receptor antagonist; adjuvant; central nervous system stimulant; diuretic; EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; environmental contaminant; food additive; fungal metabolite; geroprotector; human blood serum metabolite; mouse metabolite; mutagen; plant metabolite; psychotropic drug; ryanodine receptor agonist; xenobiotic | |
| denbufylline | denbufylline: structure given in first source | oxopurine | |
| dipyridamole | dipyridamole : A pyrimidopyrimidine that is 2,2',2'',2'''-(pyrimido[5,4-d]pyrimidine-2,6-diyldinitrilo)tetraethanol substituted by piperidin-1-yl groups at positions 4 and 8 respectively. A vasodilator agent, it inhibits the formation of blood clots. Dipyridamole: A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752) | piperidines; pyrimidopyrimidine; tertiary amino compound; tetrol | adenosine phosphodiesterase inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor; platelet aggregation inhibitor; vasodilator agent |
| fluoxetine | fluoxetine : A racemate comprising equimolar amounts of (R)- and (S)-fluoxetine. A selective serotonin reuptake inhibitor (SSRI), it is used (generally as the hydrochloride salt) for the treatment of depression (and the depressive phase of bipolar disorder), bullimia nervosa, and obsessive-compulsive disorder. Fluoxetine: The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants. N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]propan-1-amine : An aromatic ether consisting of 4-trifluoromethylphenol in which the hydrogen of the phenolic hydroxy group is replaced by a 3-(methylamino)-1-phenylpropyl group. | (trifluoromethyl)benzenes; aromatic ether; secondary amino compound | |
| ibudilast | pyrazolopyridine | ||
| amrinone | amrinone : A 3,4'-bipyridine substituted at positions 5 and 6 by an amino group and a keto function respectively. A pyridine phosphodiesterase 3 inhibitor, it is a drug that may improve the prognosis in patients with congestive heart failure. Amrinone: A positive inotropic cardiotonic (CARDIOTONIC AGENTS) with vasodilator properties, phosphodiesterase 3 inhibitory activity, and the ability to stimulate calcium ion influx into the cardiac cell. | bipyridines | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor |
| losartan | losartan : A biphenylyltetrazole where a 1,1'-biphenyl group is attached at the 5-position and has an additional trisubstituted imidazol-1-ylmethyl group at the 4'-position Losartan: An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II. | biphenylyltetrazole; imidazoles | angiotensin receptor antagonist; anti-arrhythmia drug; antihypertensive agent; endothelin receptor antagonist |
| milrinone | bipyridines; nitrile; pyridone | cardiotonic drug; EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor; platelet aggregation inhibitor; vasodilator agent | |
| papaverine | papaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum. Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels. | benzylisoquinoline alkaloid; dimethoxybenzene; isoquinolines | antispasmodic drug; vasodilator agent |
| pentoxifylline | oxopurine | ||
| 4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone | 4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone: Inhibitor of phosphodiesterases. | methoxybenzenes | |
| rolipram | pyrrolidin-2-ones | antidepressant; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor | |
| streptonigrin | pyridines; quinolone | antimicrobial agent; antineoplastic agent | |
| thalidomide | 2-(2,6-dioxopiperidin-3-yl)-1H-isoindole-1,3(2H)-dione : A dicarboximide that is isoindole-1,3(2H)-dione in which the hydrogen attached to the nitrogen is substituted by a 2,6-dioxopiperidin-3-yl group. thalidomide : A racemate comprising equimolar amounts of R- and S-thalidomide. Thalidomide: A piperidinyl isoindole originally introduced as a non-barbiturate hypnotic, but withdrawn from the market due to teratogenic effects. It has been reintroduced and used for a number of immunological and inflammatory disorders. Thalidomide displays immunosuppressive and anti-angiogenic activity. It inhibits release of TUMOR NECROSIS FACTOR-ALPHA from monocytes, and modulates other cytokine action. | phthalimides; piperidones | |
| trequinsin | trequinsin: RN given refers to parent cpd; structure given in first source | pyridopyrimidine | |
| zardaverine | zardaverine : A pyridazinone derivative in which pyridazin-3(2H)-one is substituted at C-6 with a 4-(difluoromethoxy)-3-methoxyphenyl group. It is a phosphodiesterase inhibitor, selective for PDE3 and 4. zardaverine: structure given in first source | organofluorine compound; pyridazinone | anti-asthmatic drug; bronchodilator agent; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; peripheral nervous system drug |
| 9-benzyladenine | |||
| 8-bromo cyclic adenosine monophosphate | 8-Br-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP bearing an additional bromo substituent at position 8 on the adenine ring. An activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase. 8-Bromo Cyclic Adenosine Monophosphate: A long-acting derivative of cyclic AMP. It is an activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase. | 3',5'-cyclic purine nucleotide; adenyl ribonucleotide; organobromine compound | antidepressant; protein kinase agonist |
| enoximone | Enoximone: A selective phosphodiesterase inhibitor with vasodilating and positive inotropic activity that does not cause changes in myocardial oxygen consumption. It is used in patients with CONGESTIVE HEART FAILURE. | aromatic ketone | |
| imazodan | imazodan: RN & structure given in first source; | ||
| nitraquazone | nitraquazone: structure given in first source | ||
| 2,5-diphenylfuran | diphenylfuran | ||
| cipamfylline | cipamfylline: a PDE type-4 inhibitor | oxopurine | |
| 8-((4-chlorophenyl)thio)cyclic-3',5'-amp | 8-((4-chlorophenyl)thio)cyclic-3',5'-AMP: lowers cAMP in heart & fat cells; cAMP-dependent kinase inhibitor 8-(4-chlorophenylthio)-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP in which the hydrogen at position 2 on the purine fragment is replaced by a 4-chlorophenylthio group. | 3',5'-cyclic purine nucleotide; adenyl ribonucleotide; aryl sulfide; organochlorine compound | protein kinase agonist |
| 8-thio-benzyl cyclic amp | 8-thio-benzyl cyclic AMP: RN given refers to parent cpd | ||
| 8-chloro-cyclic adenosine monophosphate | |||
| tadalafil | benzodioxoles; pyrazinopyridoindole | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent | |
| 4-phenylpyrrolidone-2 | |||
| cdp 840 | |||
| 7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine | 7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine: inibits growth of B16 melanoma & MCF-7 mammary carcinoma cells | ||
| 9-(2-hydroxy-3-nonyl)adenine | (2R,3S)-EHNA : EHNA of absolute configuration 2R,3S. Selective inhibitor of cGMP-stimulated phosphodiesterase (PDE2) (IC50 = 0.8 - 4 mM). Also a potent inhibitor of adenosine deaminase. | EHNA | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor |
| 9-(2-hydroxy-3-nonyl)adenine | (2S,3R)-EHNA : EHNA of absolute configuration 2S,3R. | EHNA | |
| cilomilast | methoxybenzenes | ||
| rp 73401 | piclamilast : A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of 3-(cyclopentyloxy)-4-methoxybenzoic acid with the primary amino group of 3,5-dichloropyridin-4-amine. piclamilast: an antiasthmatic agent and phosphodiesterase 4 inhibitor; structure in first source | aromatic ether; benzamides; chloropyridine; monocarboxylic acid amide | anti-asthmatic drug; anti-inflammatory agent; bronchodilator agent; phosphodiesterase IV inhibitor |
| (+)-rolipram | (+)-rolipram : The (S)-enantiomer of rolipram. | rolipram | |
| n(6)-benzyl-cyclic adenosine 5'-monophosphate | |||
| sibenadet | sibenadet: structure in first source | ||
| elarofiban | elarofiban: a GPIIb and GPIIIa receptor antagonist; structure in first source | ||
| cocaine | cocaine : A tropane alkaloid obtained from leaves of the South American shrub Erythroxylon coca. Cocaine: An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It also has powerful central nervous system effects similar to the amphetamines and is a drug of abuse. Cocaine, like amphetamines, acts by multiple mechanisms on brain catecholaminergic neurons; the mechanism of its reinforcing effects is thought to involve inhibition of dopamine uptake. | benzoate ester; methyl ester; tertiary amino compound; tropane alkaloid | adrenergic uptake inhibitor; central nervous system stimulant; dopamine uptake inhibitor; environmental contaminant; local anaesthetic; mouse metabolite; plant metabolite; serotonin uptake inhibitor; sodium channel blocker; sympathomimetic agent; vasoconstrictor agent; xenobiotic |
| rolipram | (-)-rolipram : The (R)-enantiomer of rolipram. | rolipram | |
| roflumilast | aromatic ether; benzamides; chloropyridine; cyclopropanes; organofluorine compound | anti-asthmatic drug; phosphodiesterase IV inhibitor | |
| 4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2h)-pyridazinone | 4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2H)-pyridazinone: RN & structure given in first source | ||
| tetomilast | |||
| indolidan | indolidan: structure given in first source | ||
| fosbretabulin | stilbenoid | ||
| sch 351591 | SCH 351591: a phosphodiesterase 4 inhibitor; structure in first source SCH-351591 : An aromatic amide resulting from the formal condensation of the carboxy group of 8-methoxy-2-(trifluoromethyl)quinoline-5-carboxylic acid with the primary amino group of 3,5-dichloropyridin-4-amine 1-oxide. It is a potent inhibitor of phosphodiesterase IV (PDE4). | ||
| l-791943 | L-791943: an phosphodiesterase iv inhibitor; structure in first source | ||
| rs 14203 | RS 14203: a type IV cyclic nucleotide phosphodiesterase inhibitor; structure in first source | ||
| gsk 256066 | |||
| rs 25344 | RS 25344: inhibits phosphodiesterase PDE-4D3; structure given in first source | ||
| ci 1044 | CI 1044: inhibits PDE4; structure in first source | ||
| l-454,560 | L-454,560: Phosphodiesterase Inhibitor; structure in first source | ||
| t 1032 | T 1032: a cyclic GMP phosphodiesterase-5 inhibitor; structure in first source | ||
| cdp 840 | CDP 840: RN refers to (R)-isomer; structure given in first source | ||
| l-826,141 | L-826,141: structure in first source | ||
| 4-n-butyl-1-(4-(2-methylphenyl)-4-oxo-1-butyl)-piperidine hydrogen chloride | |||
| 8-(methylthio)cyclic 3',5'-adenosine monophosphate | 8-(methylthio)cyclic 3',5'-adenosine monophosphate: structure | ||
| apremilast | aromatic ether; N-acetylarylamine; phthalimides; sulfone | non-steroidal anti-inflammatory drug; phosphodiesterase IV inhibitor | |
| f-amidine | F-amidine: structure in first source | N-acylglycine | |
| 8-benzylthio-n(6)-n-butyladenosine cyclic-3,5'-monophosphate | 8-benzylthio-N(6)-n-butyladenosine cyclic-3,5'-monophosphate: may be useful as myocardial stimulant; structure given in first source | ||
| 3-(2,5-dimethoxyphenyl)-6-(3,4-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| n-alpha-benzoyl-n5-(2-chloro-1-iminoethyl)-l-ornithine amide | benzenes | ||
| 6-(3-cyclopentyloxy-4-methoxyphenyl)-3-(2-methoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2-chlorophenyl)-6-(3-cyclopentyloxy-4-methoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-(3-cyclopentyloxy-4-methoxyphenyl)-3-(2,5-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[3-(cyclopropylmethoxy)-4-methoxyphenyl]-3-(2-methoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2-chlorophenyl)-6-[3-(cyclopropylmethoxy)-4-methoxyphenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[3-(cyclopropylmethoxy)-4-methoxyphenyl]-3-(2,5-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-3-(2-methoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2-chlorophenyl)-6-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-3-(2-fluorophenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-3-(2,5-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[4-methoxy-3-(3-oxolanyloxy)phenyl]-3-(2-methoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2-chlorophenyl)-6-[4-methoxy-3-(3-oxolanyloxy)phenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2-fluorophenyl)-6-[4-methoxy-3-(3-oxolanyloxy)phenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 6-[4-methoxy-3-(3-oxolanyloxy)phenyl]-3-[2-(trifluoromethyl)phenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| 3-(2,5-dimethoxyphenyl)-6-[4-methoxy-3-(3-oxolanyloxy)phenyl]-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| an2728 | crisaborole : A member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults. crisaborole: NSAID, Dermatologic Agent; structure in first source | aromatic ether; benzoxaborole; nitrile | antipsoriatic; non-steroidal anti-inflammatory drug; phosphodiesterase IV inhibitor |
| bms-911543 | N,N-dicyclopropyl-4-((1,5-dimethyl-1H-pyrazol-3-yl)amino)-6-ethyl-1-methyl-1,6-dihydroimidazo(4,5-d)pyrrolo(2,3b)pyridine-7-carboxamide: has antineoplastic activity; structure in first source | ||
| chlortetracycline | chlortetracycline : A member of the class of tetracyclines with formula C22H23ClN2O8 isolated from Streptomyces aureofaciens. Chlortetracycline: A TETRACYCLINE with a 7-chloro substitution. | ||
| chf6001 | tanimilast: a phosphodiesterase-4 inhibitor; structure in first source | ||
| sildenafil | sildenafil : A pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position. | piperazines; pyrazolopyrimidine; sulfonamide | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent |
| zaprinast | zaprinast: anaphylaxis inhibitor; structure | triazolopyrimidines | |
| vardenafil | vardenafil : The sulfonamide resulting from formal condensation of the sulfo group of 4-ethoxy-3-(5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one-2-yl)benzenesulfonic acid and the secondary amino group of 4-ethylpiperazine. | imidazotriazine; N-alkylpiperazine; N-sulfonylpiperazine | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; vasodilator agent |
| Imidazosagatriazinone | pyrazolopyrimidine | ||
| pelrinone | pelrinone: structure given in first source | ||
| lixazinone | lixazinone: structure given in first source |