1
|
Werner S, Mesch S, Hillig RC, Ter Laak A, Klint J, Neagoe I, Laux-Biehlmann A, Dahllöf H, Bräuer N, Puetter V, Nubbemeyer R, Schulz S, Bairlein M, Zollner TM, Steinmeyer A. Discovery and Characterization of the Potent and Selective P2X4 Inhibitor N-[4-(3-Chlorophenoxy)-3-sulfamoylphenyl]-2-phenylacetamide (BAY-1797) and Structure-Guided Amelioration of Its CYP3A4 Induction Profile. J Med Chem 2019; 62:11194-11217. [PMID: 31746599 DOI: 10.1021/acs.jmedchem.9b01304] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The P2X4 receptor is a ligand-gated ion channel that is expressed on a variety of cell types, especially those involved in inflammatory and immune processes. High-throughput screening led to a new class of P2X4 inhibitors with substantial CYP 3A4 induction in human hepatocytes. A structure-guided optimization with respect to decreased pregnane X receptor (PXR) binding was started. It was found that the introduction of larger and more polar substituents on the ether linker led to less PXR binding while maintaining the P2X4 inhibitory potency. This translated into significantly reduced CYP 3A4 induction for compounds 71 and 73. Unfortunately, the in vivo pharmacokinetic (PK) profiles of these compounds were insufficient for the desired profile in humans. However, BAY-1797 (10) was identified and characterized as a potent and selective P2X4 antagonist. This compound is suitable for in vivo studies in rodents, and the anti-inflammatory and anti-nociceptive effects of BAY-1797 were demonstrated in a mouse complete Freund's adjuvant (CFA) inflammatory pain model.
Collapse
Affiliation(s)
- Stefan Werner
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Stefanie Mesch
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Roman C Hillig
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Antonius Ter Laak
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | | | | | | | - Henrik Dahllöf
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Nico Bräuer
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Vera Puetter
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | | | - Simone Schulz
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Michaela Bairlein
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Thomas M Zollner
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| | - Andreas Steinmeyer
- Bayer AG, Research & Development, Pharmaceuticals , 13353 Berlin , Germany
| |
Collapse
|
2
|
Burnstock G. Purinergic signalling in the urinary tract in health and disease. Purinergic Signal 2014; 10:103-55. [PMID: 24265069 PMCID: PMC3944045 DOI: 10.1007/s11302-013-9395-y] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/24/2013] [Indexed: 12/25/2022] Open
Abstract
Purinergic signalling is involved in a number of physiological and pathophysiological activities in the lower urinary tract. In the bladder of laboratory animals there is parasympathetic excitatory cotransmission with the purinergic and cholinergic components being approximately equal, acting via P2X1 and muscarinic receptors, respectively. Purinergic mechanosensory transduction occurs where ATP, released from urothelial cells during distension of bladder and ureter, acts on P2X3 and P2X2/3 receptors on suburothelial sensory nerves to initiate the voiding reflex, via low threshold fibres, and nociception, via high threshold fibres. In human bladder the purinergic component of parasympathetic cotransmission is less than 3 %, but in pathological conditions, such as interstitial cystitis, obstructed and neuropathic bladder, the purinergic component is increased to 40 %. Other pathological conditions of the bladder have been shown to involve purinoceptor-mediated activities, including multiple sclerosis, ischaemia, diabetes, cancer and bacterial infections. In the ureter, P2X7 receptors have been implicated in inflammation and fibrosis. Purinergic therapeutic strategies are being explored that hopefully will be developed and bring benefit and relief to many patients with urinary tract disorders.
Collapse
Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London, NW3 2PF, UK,
| |
Collapse
|
3
|
Yegutkin GG, Burnstock G. Steady-state binding of [3H]ATP to rat liver plasma membranes and competition by various purinergic agonists and antagonists. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1373:227-36. [PMID: 9733971 DOI: 10.1016/s0005-2736(98)00108-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Steady-state analysis of nucleotide-binding sites on rat liver plasma membranes was carried out using 3H-labelled ATP as radioligand under complete inhibition of ecto-ATPase activity by excess EDTA. Binding of [3H]ATP to the membranes is saturable, reversible and apparently involves one population of specific binding sites with Kd of about 90 nM and binding capacity (Bmax) of 15 pmol/mg protein. A broad spectrum of purinergic agonists and antagonists was examined as potential inhibitors of the measured binding. The displacement studies showed the following rank order of inhibitory potency for [3H]ATP-binding sites (pIC50 values in parentheses): ATPgammaS (7.49)>2-MeSATP (7.18)>ATP (6.91)>ADPbetaS (6.64)>/=ADP (6.56)>>RB2 (6.14)>>suramin (5.40)>>Ap4A (4. 57)>alpha,beta-MeATP (4.19)>/=beta,gamma-MeATP (3.97). AMP, adenosine, Ap5A, PPADS, beta-glycerophosphate as well as non-adenine nucleoside triphosphates GTP, UTP and CTP did not exert any effect on the measured binding at concentration ranges of 10-6-10-4 M. In order to ascertain whether ATP and its analogues are capable of interacting with the same binding domain, 2-MeSATP and ADP were treated as alternative ligands that could compete with unlabelled ATP for its binding sites. A 2-fold increase of Kd value for ATP-receptor interaction was observed in the presence of 2-MeSATP (60 nM) or ADP (250 nM) without any modulation of Bmax value, confirming that inhibitory effects of these compounds are competitive in nature. These studies demonstrate that ATP and its analogues are able to interact with a single binding domain on liver plasma membranes, which may be identified as ligand-binding component of P2 purinoceptors of the P2Y1 subtype.
Collapse
Affiliation(s)
- G G Yegutkin
- Autonomic Neuroscience Institute, Royal Free Hospital School of Medicine, Rowland Hill Street, London NW3 2PF, UK
| | | |
Collapse
|
5
|
Martin PL, Gero TW, Potts AA, Cusack NJ. Structure-activity studies of analogs of ?, ?-methylene-ATP at P2X-purinoceptors in the rabbit ear central artery. Drug Dev Res 1995. [DOI: 10.1002/ddr.430360402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
6
|
Bo X, Fischer B, Maillard M, Jacobson KA, Burnstock G. Comparative studies on the affinities of ATP derivatives for P2x-purinoceptors in rat urinary bladder. Br J Pharmacol 1994; 112:1151-9. [PMID: 7952876 PMCID: PMC1910266 DOI: 10.1111/j.1476-5381.1994.tb13204.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
1. Radioligand binding assays have been used to determine the affinities of a series of ATP derivatives with modifications of the polyphosphate chain, adenine and ribose moieties of the ATP molecule for [H]-alpha,beta-methylene ATP ([3H]-alpha,beta-MeATP) binding sites in rat urinary bladder. 2. The replacement of the bridging oxygen in the triphosphate chain of ATP (pIC50 = 5.58) with a methylene or imido group markedly increased the affinity (691 fold in IC50 values for beta,gamma-imidoATP, 15 fold for beta,gamma-methylene ATP), and the replacement of an ionized oxygen on the gamma-phosphate with a sulphur (ATP gamma S) also led to increased affinity (5623 fold in IC50 values). 3. Modifications at N6, N1, and C-8 positions on the purine base usually reduced the affinity of ATP (a decrease of 2.8 fold in IC50 values for N6-methylATP and 8.9 fold for 8-bromo ATP), while the attachment of an alkylthio group to the C-2 position greatly increased the affinity for P2x-purinoceptors (from 3.5 to 98 fold increase in IC50 values). 4. Replacement of the 3'-hydroxyl group on the ribose with substituted amino or acylamino groups produced more potent P2x-purinoceptor agonists (an increase of 447 fold in IC50 values for 3'-deoxy-3'-benzylamino ATP and 28 fold for 3'-deoxy-3'-(4-hydroxyphenylpropionyl)amino ATP. 5. Diadenosine polyphosphates (Ap[n]A) were also shown to displace the [3H]-alpha,beta-MeATP binding. The rank order of potency was Ap6A > Ap5A > Ap4A >> Ap3A >> Ap2A. 6. Suramin, PPADS, and reactive blue 2 could competitively displace the binding of [3H]-alpha,beta-MeATP toP2X-purinoceptors, with pIC50 values of 6.26, 5.35, and 6.22, respectively.
Collapse
Affiliation(s)
- X Bo
- Department of Anatomy and Developmental Biology, University College London, UK
| | | | | | | | | |
Collapse
|
7
|
Ergene E, Dunbar JC, O'Leary DS, Barraco RA. Activation of P2-purinoceptors in the nucleus tractus solitarius mediate depressor responses. Neurosci Lett 1994; 174:188-92. [PMID: 7970176 DOI: 10.1016/0304-3940(94)90018-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The purpose of the study was to examine the role of P2 purinergic receptors in mechanisms of cardiovascular control mediated by the nucleus tractus solitarius (NTS), a major integrative site in the brainstem involved in the reflex coordination of cardiorespiratory and visceral response patterns. Microinjections of ATP and its analogues were made into the subpostremal NTS of anesthetized, spontaneously breathing rats. ATP, alpha,beta-methylene ATP (alpha beta-meATP) and 2-methylthio-ATP (2-meSATP) produced significant dose-related reductions in arterial blood pressure. alpha beta-meATP was slightly more potent than ATP and 2-meSATP. Pretreatment with the P2 receptor antagonist, suramin (0.5 nmol/rat), into the same NTS site 10 min prior to agonist administration completely blocked pronounced depressor response pattern elicited by the highest dose of alpha beta-meATP (0.1 nmol/rat). The present findings suggest that endogenous ATP may serve as a fast transmitter substance in NTS-mediated mechanisms of cardiovascular control.
Collapse
Affiliation(s)
- E Ergene
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201
| | | | | | | |
Collapse
|