Benzbromarone

This drug entry is a stub and has not been fully annotated. It is scheduled to be annotated soon.

Identification

Summary

Benzbromarone is a uricosuric agent which is taken daily for the prevention of gout flares.

Generic Name
Benzbromarone
DrugBank Accession Number
DB12319
Background

Benzbromarone has been used in trials studying the basic science and treatment of Heart Failure, Hyperuricemia, Chronic Kidney Disease, Abnormal Renal Function, and Gout and Asymptomatic Hyperuricemia.

Type
Small Molecule
Groups
Investigational, Withdrawn
Structure
Weight
Average: 424.083
Monoisotopic: 421.915319544
Chemical Formula
C17H12Br2O3
Synonyms
  • 2-ethyl-3-(3,5-dibrom-4-hydroxybenzoyl)benzofuran
  • 3,5-dibromo-4-hydroxyphenyl-2-ethyl-3-benzofuranyl ketone
  • Benzbromarona
  • Benzbromarone
External IDs
  • L-2214
  • MJ 10061

Pharmacology

Indication

Not Available

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Treatment ofGouty arthritis••••••••••••••••••• ••••••
Used in combination to treatGouty arthritisCombination Product in combination with: Allopurinol (DB00437)••••••••••••••••••• ••••••
Contraindications & Blackbox Warnings
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Pharmacodynamics

Not Available

Mechanism of action
TargetActionsOrganism
AAnoctamin-1
antagonist
Humans
ASolute carrier family 22 member 12
inhibitor
Humans
AMultidrug resistance-associated protein 1
stimulator
Humans
UCytochrome P450 2C9
inhibitor
Humans
UCytochrome P450 2C19
inhibitor
Humans
Absorption

Not Available

Volume of distribution

Not Available

Protein binding

Not Available

Metabolism
Not Available
Route of elimination

Not Available

Half-life

Not Available

Clearance

Not Available

Adverse Effects
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Toxicity

Not Available

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
DrugInteraction
AbrocitinibThe metabolism of Abrocitinib can be decreased when combined with Benzbromarone.
AcenocoumarolThe metabolism of Acenocoumarol can be decreased when combined with Benzbromarone.
AcetohexamideThe metabolism of Acetohexamide can be decreased when combined with Benzbromarone.
Acetylsalicylic acidThe therapeutic efficacy of Benzbromarone can be decreased when used in combination with Acetylsalicylic acid.
AlbendazoleThe metabolism of Albendazole can be decreased when combined with Benzbromarone.
Food Interactions
Not Available

Products

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International/Other Brands
Uroleap
Mixture Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing EndRegionImage
ลาโนโลนBenzbromarone (20 mg) + Allopurinol (100 mg)Tablet, coatedOralบริษัท เภสัชกรรมศรีประสิทธิ์ จำกัด จำกัด1997-12-10Not applicableThailand flag

Categories

ATC Codes
M04AB03 — Benzbromarone
Drug Categories
Chemical TaxonomyProvided by Classyfire
Description
This compound belongs to the class of organic compounds known as aryl-phenylketones. These are aromatic compounds containing a ketone substituted by one aryl group, and a phenyl group.
Kingdom
Organic compounds
Super Class
Organic oxygen compounds
Class
Organooxygen compounds
Sub Class
Carbonyl compounds
Direct Parent
Aryl-phenylketones
Alternative Parents
Benzofurans / O-bromophenols / Benzoyl derivatives / 3-aroylfurans / Bromobenzenes / Aryl bromides / Heteroaromatic compounds / Oxacyclic compounds / Organobromides / Organic oxides
show 1 more
Substituents
2-bromophenol / 2-halophenol / 3-aroylfuran / Aromatic heteropolycyclic compound / Aryl bromide / Aryl halide / Aryl-phenylketone / Benzenoid / Benzofuran / Benzoyl
show 12 more
Molecular Framework
Aromatic heteropolycyclic compounds
External Descriptors
1-benzofurans, aromatic ketone (CHEBI:3023)
Affected organisms
Not Available

Chemical Identifiers

UNII
4POG0RL69O
CAS number
3562-84-3
InChI Key
WHQCHUCQKNIQEC-UHFFFAOYSA-N
InChI
InChI=1S/C17H12Br2O3/c1-2-13-15(10-5-3-4-6-14(10)22-13)16(20)9-7-11(18)17(21)12(19)8-9/h3-8,21H,2H2,1H3
IUPAC Name
2,6-dibromo-4-(2-ethyl-1-benzofuran-3-carbonyl)phenol
SMILES
CCC1=C(C(=O)C2=CC(Br)=C(O)C(Br)=C2)C2=CC=CC=C2O1

References

General References
  1. FDA Thailand Product Information: Benarone (benzbromarone) oral tablets [Link]
  2. FDA Thailand Product Information: Allomaron (allopurinol/benzbromarone) oral tablets [Link]
Human Metabolome Database
HMDB0041834
KEGG Drug
D01056
PubChem Compound
2333
PubChem Substance
347828582
ChemSpider
2243
BindingDB
50158460
RxNav
1385
ChEBI
3023
ChEMBL
CHEMBL388590
ZINC
ZINC000000608205
PDBe Ligand
R75
Wikipedia
Benzbromarone
PDB Entries
7acu / 7d6j / 8ii2 / 8k4h

Clinical Trials

Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
4CompletedTreatmentHeart Failure / Hyperuricemia1somestatusstop reasonjust information to hide
4CompletedTreatmentType 2 Diabetes Mellitus1somestatusstop reasonjust information to hide
4Unknown StatusTreatmentHyperuricemia / Left Ventricular Diastolic Dysfunction / Syndrome, Metabolic1somestatusstop reasonjust information to hide
3CompletedTreatmentHyperuricemia With or Without Gout1somestatusstop reasonjust information to hide
2CompletedTreatmentHyperuricemia1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
FormRouteStrength
TabletOral
TabletOral50 mg
Tablet, coatedOral
Tablet, coatedOral100 mg
Prices
Not Available
Patents
Not Available

Properties

State
Not Available
Experimental Properties
Not Available
Predicted Properties
PropertyValueSource
Water Solubility0.0131 mg/mLALOGPS
logP5.52ALOGPS
logP5.55Chemaxon
logS-4.5ALOGPS
pKa (Strongest Acidic)5.11Chemaxon
pKa (Strongest Basic)-3Chemaxon
Physiological Charge-1Chemaxon
Hydrogen Acceptor Count2Chemaxon
Hydrogen Donor Count1Chemaxon
Polar Surface Area50.44 Å2Chemaxon
Rotatable Bond Count3Chemaxon
Refractivity92.37 m3·mol-1Chemaxon
Polarizability35.65 Å3Chemaxon
Number of Rings3Chemaxon
Bioavailability1Chemaxon
Rule of FiveNoChemaxon
Ghose FilterYesChemaxon
Veber's RuleNoChemaxon
MDDR-like RuleNoChemaxon
Predicted ADMET Features
Not Available

Spectra

Mass Spec (NIST)
Not Available
Spectra
SpectrumSpectrum TypeSplash Key
Predicted GC-MS Spectrum - GC-MSPredicted GC-MSsplash10-05i1-4832900000-7ab986576555401c2682
Predicted MS/MS Spectrum - 10V, Negative (Annotated)Predicted LC-MS/MSsplash10-00di-1000900000-fd609f1f074581b3f97a
Predicted MS/MS Spectrum - 10V, Positive (Annotated)Predicted LC-MS/MSsplash10-00di-0000900000-ca18770a6965b267fa70
Predicted MS/MS Spectrum - 20V, Positive (Annotated)Predicted LC-MS/MSsplash10-00di-0000900000-2166dea0b6a53beee9b8
Predicted MS/MS Spectrum - 20V, Negative (Annotated)Predicted LC-MS/MSsplash10-00fu-4256900000-de9a61a12c52f64a466b
Predicted MS/MS Spectrum - 40V, Positive (Annotated)Predicted LC-MS/MSsplash10-002b-0981100000-610847848e25dfc99d6b
Predicted MS/MS Spectrum - 40V, Negative (Annotated)Predicted LC-MS/MSsplash10-004i-9003000000-3bcd1e0ca220ac5f90c6
Predicted 1H NMR Spectrum1D NMRNot Applicable
Predicted 13C NMR Spectrum1D NMRNot Applicable
Chromatographic Properties
Collision Cross Sections (CCS)
AdductCCS Value (Å2)Source typeSource
[M-H]-176.1333929
predicted
DarkChem Lite v0.1.0
[M-H]-168.25583
predicted
DeepCCS 1.0 (2019)
[M+H]+176.0641929
predicted
DarkChem Lite v0.1.0
[M+H]+170.61382
predicted
DeepCCS 1.0 (2019)
[M+Na]+176.1058929
predicted
DarkChem Lite v0.1.0
[M+Na]+177.25386
predicted
DeepCCS 1.0 (2019)

Targets

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Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Antagonist
General Function
Calcium-activated chloride channel (CaCC) (PubMed:20056604, PubMed:22178883, PubMed:22946059, PubMed:32487539). Plays a role in transepithelial anion transport and smooth muscle contraction. Required for the normal functioning of the interstitial cells of Cajal (ICCs) which generate electrical pacemaker activity in gastrointestinal smooth muscles. Acts as a major contributor to basal and stimulated chloride conductance in airway epithelial cells and plays an important role in tracheal cartilage development. Required for CFTR activation by enhancing endoplasmic reticulum Ca(2+) store release and is also required for CFTR membrane expression (PubMed:28963502). Required for basal and ATP-dependent mucus secretion in airways and intestine, probably by controlling exocytosis of mucus-filled granules by providing Ca(2+) to an apical signaling compartment (By similarity). Contributes to airway mucus expression induced by interleukins IL3 and IL8 and by the asthma-associated protein CLCA1 and is required for expression of mucin MUC5AC (PubMed:33026825). However, was shown in another study not to be required for MUC5AC expression (PubMed:31732694). Plays a role in the propagation of Ca(2+) waves in Kolliker's organ in the cochlea and contributes to the refinement of auditory brainstem circuitries prior to hearing onset (By similarity). In vomeronasal sensory neurons, modulates spontaneous firing patterns in the absence of stimuli as well as the firing pattern of pheromone-evoked activity (By similarity). Responsible for calcium-activated chloride channel activity in type I taste cells of the vallate papillae (By similarity). Acts as a heat sensor in nociceptive neurons (By similarity). In dorsal root ganglion neurons, plays a role in mediating non-histaminergic Mas-related G-protein coupled receptor (MRGPR)-dependent itching, acting as a downstream effector of MRGPRs (By similarity). In the developing brain, required for the Ca(2+)-dependent process extension of radial glial cells (By similarity)
Specific Function
Calcium-activated cation channel activity
Gene Name
ANO1
Uniprot ID
Q5XXA6
Uniprot Name
Anoctamin-1
Molecular Weight
114077.215 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Electroneutral antiporter that translocates urate across the apical membrane of proximal tubular cells in exchange for monovalent organic or inorganic anions (PubMed:12024214, PubMed:22194875, PubMed:35144162, PubMed:35462902). Involved in renal reabsorption of urate and helps maintaining blood levels of uric acid (PubMed:12024214, PubMed:22194875). Mediates urate uptake by an exchange with organic anions such as (S)-lactate and nicotinate, and inorganic anion Cl(-) (PubMed:12024214). Other inorganic anions such as Br(-), I(-) and NO3(-) may also act as counteranions that exchange for urate (PubMed:12024214). Also mediates orotate tubular uptake coupled with nicotinate efflux and to a lesser extent with lactate efflux, therefore displaying a potential role in orotate renal reabsorption (PubMed:21350910). Orotate transport is Cl(-)-dependent (PubMed:21350910)
Specific Function
Pdz domain binding
Gene Name
SLC22A12
Uniprot ID
Q96S37
Uniprot Name
Solute carrier family 22 member 12
Molecular Weight
59629.57 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Stimulator
General Function
Mediates export of organic anions and drugs from the cytoplasm (PubMed:10064732, PubMed:11114332, PubMed:16230346, PubMed:7961706, PubMed:9281595). Mediates ATP-dependent transport of glutathione and glutathione conjugates, leukotriene C4, estradiol-17-beta-o-glucuronide, methotrexate, antiviral drugs and other xenobiotics (PubMed:10064732, PubMed:11114332, PubMed:16230346, PubMed:7961706, PubMed:9281595). Confers resistance to anticancer drugs by decreasing accumulation of drug in cells, and by mediating ATP- and GSH-dependent drug export (PubMed:9281595). Hydrolyzes ATP with low efficiency (PubMed:16230346). Catalyzes the export of sphingosine 1-phosphate from mast cells independently of their degranulation (PubMed:17050692). Participates in inflammatory response by allowing export of leukotriene C4 from leukotriene C4-synthezing cells (By similarity). Mediates ATP-dependent, GSH-independent cyclic GMP-AMP (cGAMP) export (PubMed:36070769). Thus, by limiting intracellular cGAMP concentrations negatively regulates the cGAS-STING pathway (PubMed:36070769)
Specific Function
Abc-type glutathione s-conjugate transporter activity
Gene Name
ABCC1
Uniprot ID
P33527
Uniprot Name
Multidrug resistance-associated protein 1
Molecular Weight
171589.5 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids and steroids (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:15766564, PubMed:19965576, PubMed:7574697, PubMed:9866708). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Exhibits low catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes bisallylic hydroxylation and hydroxylation with double-bond migration of polyunsaturated fatty acids (PUFA) (PubMed:9435160, PubMed:9866708). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan (PubMed:25994031)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C9
Uniprot ID
P11712
Uniprot Name
Cytochrome P450 2C9
Molecular Weight
55627.365 Da
References
  1. Locuson CW 2nd, Wahlstrom JL, Rock DA, Rock DA, Jones JP: A new class of CYP2C9 inhibitors: probing 2C9 specificity with high-affinity benzbromarone derivatives. Drug Metab Dispos. 2003 Jul;31(7):967-71. [Article]
  2. Locuson CW 2nd, Rock DA, Jones JP: Quantitative binding models for CYP2C9 based on benzbromarone analogues. Biochemistry. 2004 Jun 8;43(22):6948-58. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
Curator comments
Anionic analog is a more potent inhibitor
General Function
A cytochrome P450 monooxygenase involved in the metabolism of polyunsaturated fatty acids (PUFA) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates PUFA specifically at the omega-1 position (PubMed:18577768). Catalyzes the epoxidation of double bonds of PUFA (PubMed:19965576, PubMed:20972997). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine. Hydroxylates fenbendazole at the 4' position (PubMed:23959307)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C19
Uniprot ID
P33261
Uniprot Name
Cytochrome P450 2C19
Molecular Weight
55944.565 Da
References
  1. Locuson CW 2nd, Suzuki H, Rettie AE, Jones JP: Charge and substituent effects on affinity and metabolism of benzbromarone-based CYP2C19 inhibitors. J Med Chem. 2004 Dec 30;47(27):6768-76. [Article]

Enzymes

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
Curator comments
Data supporting this enzyme inhibition is limited. Current evidence shows that it may be synthetically modified to become a very potent CYP2C19 inhibitor.
General Function
A cytochrome P450 monooxygenase involved in the metabolism of polyunsaturated fatty acids (PUFA) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. Hydroxylates PUFA specifically at the omega-1 position (PubMed:18577768). Catalyzes the epoxidation of double bonds of PUFA (PubMed:19965576, PubMed:20972997). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine. Hydroxylates fenbendazole at the 4' position (PubMed:23959307)
Specific Function
(r)-limonene 6-monooxygenase activity
Gene Name
CYP2C19
Uniprot ID
P33261
Uniprot Name
Cytochrome P450 2C19
Molecular Weight
55944.565 Da
References
  1. Locuson CW 2nd, Suzuki H, Rettie AE, Jones JP: Charge and substituent effects on affinity and metabolism of benzbromarone-based CYP2C19 inhibitors. J Med Chem. 2004 Dec 30;47(27):6768-76. [Article]
  2. Reynald RL, Sansen S, Stout CD, Johnson EF: Structural characterization of human cytochrome P450 2C19: active site differences between P450s 2C8, 2C9, and 2C19. J Biol Chem. 2012 Dec 28;287(53):44581-91. doi: 10.1074/jbc.M112.424895. Epub 2012 Nov 1. [Article]

Transporters

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Mediates the Na(+)-independent uptake of organic anions (PubMed:10358072, PubMed:15159445, PubMed:17412826). Shows broad substrate specificity, can transport both organic anions such as bile acid taurocholate (cholyltaurine) and conjugated steroids (dehydroepiandrosterone 3-sulfate, 17-beta-glucuronosyl estradiol, and estrone 3-sulfate), as well as eicosanoids (prostaglandin E2, thromboxane B2, leukotriene C4, and leukotriene E4), and thyroid hormones (T4/L-thyroxine, and T3/3,3',5'-triiodo-L-thyronine) (PubMed:10358072, PubMed:10601278, PubMed:10873595, PubMed:11159893, PubMed:12196548, PubMed:12568656, PubMed:15159445, PubMed:15970799, PubMed:16627748, PubMed:17412826, PubMed:19129463, PubMed:26979622). Can take up bilirubin glucuronides from plasma into the liver, contributing to the detoxification-enhancing liver-blood shuttling loop (PubMed:22232210). Involved in the clearance of endogenous and exogenous substrates from the liver (PubMed:10358072, PubMed:10601278). Transports coproporphyrin I and III, by-products of heme synthesis, and may be involved in their hepatic disposition (PubMed:26383540). May contribute to regulate the transport of organic compounds in testes across the blood-testis-barrier (Probable). Can transport HMG-CoA reductase inhibitors (also known as statins), such as pravastatin and pitavastatin, a clinically important class of hypolipidemic drugs (PubMed:10601278, PubMed:15159445, PubMed:15970799). May play an important role in plasma and tissue distribution of the structurally diverse chemotherapeutic drug methotrexate (PubMed:23243220). May also transport antihypertension agents, such as the angiotensin-converting enzyme (ACE) inhibitor prodrug enalapril, and the highly selective angiotensin II AT1-receptor antagonist valsartan, in the liver (PubMed:16624871, PubMed:16627748). Shows a pH-sensitive substrate specificity towards prostaglandin E2 and T4 which may be ascribed to the protonation state of the binding site and leads to a stimulation of substrate transport in an acidic microenvironment (PubMed:19129463). Hydrogencarbonate/HCO3(-) acts as the probable counteranion that exchanges for organic anions (PubMed:19129463)
Specific Function
Bile acid transmembrane transporter activity
Gene Name
SLCO1B1
Uniprot ID
Q9Y6L6
Uniprot Name
Solute carrier organic anion transporter family member 1B1
Molecular Weight
76447.99 Da
References
  1. Karlgren M, Vildhede A, Norinder U, Wisniewski JR, Kimoto E, Lai Y, Haglund U, Artursson P: Classification of inhibitors of hepatic organic anion transporting polypeptides (OATPs): influence of protein expression on drug-drug interactions. J Med Chem. 2012 May 24;55(10):4740-63. doi: 10.1021/jm300212s. Epub 2012 May 15. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Inhibitor
General Function
Mediates the Na(+)-independent transport of steroid sulfate conjugates and other specific organic anions (PubMed:10873595, PubMed:11159893, PubMed:11932330, PubMed:12724351, PubMed:14610227, PubMed:16908597, PubMed:18501590, PubMed:20507927, PubMed:22201122, PubMed:23531488, PubMed:25132355, PubMed:26383540, PubMed:27576593, PubMed:28408210, PubMed:29871943, PubMed:34628357). Responsible for the transport of estrone 3-sulfate (E1S) through the basal membrane of syncytiotrophoblast, highlighting a potential role in the placental absorption of fetal-derived sulfated steroids including the steroid hormone precursor dehydroepiandrosterone sulfate (DHEA-S) (PubMed:11932330, PubMed:12409283). Also facilitates the uptake of sulfated steroids at the basal/sinusoidal membrane of hepatocytes, therefore accounting for the major part of organic anions clearance of liver (PubMed:11159893). Mediates the intestinal uptake of sulfated steroids (PubMed:12724351, PubMed:28408210). Mediates the uptake of the neurosteroids DHEA-S and pregnenolone sulfate (PregS) into the endothelial cells of the blood-brain barrier as the first step to enter the brain (PubMed:16908597, PubMed:25132355). Also plays a role in the reuptake of neuropeptides such as substance P/TAC1 and vasoactive intestinal peptide/VIP released from retinal neurons (PubMed:25132355). May act as a heme transporter that promotes cellular iron availability via heme oxygenase/HMOX2 and independently of TFRC (PubMed:35714613). Also transports heme by-product coproporphyrin III (CPIII), and may be involved in their hepatic disposition (PubMed:26383540). Mediates the uptake of other substrates such as prostaglandins D2 (PGD2), E1 (PGE1) and E2 (PGE2), taurocholate, L-thyroxine, leukotriene C4 and thromboxane B2 (PubMed:10873595, PubMed:14610227, PubMed:19129463, PubMed:29871943, Ref.25). May contribute to regulate the transport of organic compounds in testis across the blood-testis-barrier (Probable). Shows a pH-sensitive substrate specificity which may be ascribed to the protonation state of the binding site and leads to a stimulation of substrate transport in an acidic microenvironment (PubMed:14610227, PubMed:19129463, PubMed:22201122). The exact transport mechanism has not been yet deciphered but most likely involves an anion exchange, coupling the cellular uptake of organic substrate with the efflux of an anionic compound (PubMed:19129463, PubMed:20507927, PubMed:26277985). Hydrogencarbonate/HCO3(-) acts as a probable counteranion that exchanges for organic anions (PubMed:19129463). Cytoplasmic glutamate may also act as counteranion in the placenta (PubMed:26277985). An inwardly directed proton gradient has also been proposed as the driving force of E1S uptake with a (H(+):E1S) stoichiometry of (1:1) (PubMed:20507927)
Specific Function
Bile acid transmembrane transporter activity
Gene Name
SLCO2B1
Uniprot ID
O94956
Uniprot Name
Solute carrier organic anion transporter family member 2B1
Molecular Weight
76697.93 Da
References
  1. Karlgren M, Vildhede A, Norinder U, Wisniewski JR, Kimoto E, Lai Y, Haglund U, Artursson P: Classification of inhibitors of hepatic organic anion transporting polypeptides (OATPs): influence of protein expression on drug-drug interactions. J Med Chem. 2012 May 24;55(10):4740-63. doi: 10.1021/jm300212s. Epub 2012 May 15. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
No
Actions
Substrate
General Function
Catalyzes the transport of the major hydrophobic bile salts, such as taurine and glycine-conjugated cholic acid across the canalicular membrane of hepatocytes in an ATP-dependent manner, therefore participates in hepatic bile acid homeostasis and consequently to lipid homeostasis through regulation of biliary lipid secretion in a bile salts dependent manner (PubMed:15791618, PubMed:16332456, PubMed:18985798, PubMed:19228692, PubMed:20010382, PubMed:20398791, PubMed:22262466, PubMed:24711118, PubMed:29507376, PubMed:32203132). Transports taurine-conjugated bile salts more rapidly than glycine-conjugated bile salts (PubMed:16332456). Also transports non-bile acid compounds, such as pravastatin and fexofenadine in an ATP-dependent manner and may be involved in their biliary excretion (PubMed:15901796, PubMed:18245269)
Specific Function
Abc-type bile acid transporter activity
Gene Name
ABCB11
Uniprot ID
O95342
Uniprot Name
Bile salt export pump
Molecular Weight
146405.83 Da
References
  1. Pedersen JM, Matsson P, Bergstrom CA, Hoogstraate J, Noren A, LeCluyse EL, Artursson P: Early identification of clinically relevant drug interactions with the human bile salt export pump (BSEP/ABCB11). Toxicol Sci. 2013 Dec;136(2):328-43. doi: 10.1093/toxsci/kft197. Epub 2013 Sep 6. [Article]

Drug created at October 20, 2016 21:56 / Updated at August 26, 2024 19:24