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Patel MV, Peltier HM, Matulenko MA, Koenig JR, C Scanio MJ, Gum RJ, El-Kouhen OF, Fricano MM, Lundgaard GL, Neelands T, Zhang XF, Zhan C, Pai M, Ghoreishi-Haack N, Hudzik T, Gintant G, Martin R, McGaraughty S, Xu J, Bow D, Kalvass JC, Kym PR, DeGoey DA, Kort ME. Discovery of (R)-(3-fluoropyrrolidin-1-yl)(6-((5-(trifluoromethyl)pyridin-2-yl)oxy)quinolin-2-yl)methanone (ABBV-318) and analogs as small molecule Na v1.7/ Nav1.8 blockers for the treatment of pain. Bioorg Med Chem 2022; 63:116743. [PMID: 35436748 DOI: 10.1016/j.bmc.2022.116743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 11/24/2022]
Abstract
The voltage-gated sodium channel Nav1.7 is an attractive target for the treatment of pain based on the high level of target validation with genetic evidence linking Nav1.7 to pain in humans. Our effort to identify selective, CNS-penetrant Nav1.7 blockers with oral activity, improved selectivity, good drug-like properties, and safety led to the discovery of 2-substituted quinolines and quinolones as potent small molecule Nav1.7 blockers. The design of these molecules focused on maintaining potency at Nav1.7, improving selectivity over the hERG channel, and overcoming phospholipidosis observed with the initial leads. The structure-activity relationship (SAR) studies leading to the discovery of (R)-(3-fluoropyrrolidin-1-yl)(6-((5-(trifluoromethyl)pyridin-2-yl)oxy)quinolin-2-yl)methanone (ABBV-318) are described herein. ABBV-318 displayed robust in vivo efficacy in both inflammatory and neuropathic rodent models of pain. ABBV-318 also inhibited Nav1.8, another sodium channel isoform that is an active target for the development of new pain treatments.
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Affiliation(s)
- Meena V Patel
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA.
| | - Hillary M Peltier
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Mark A Matulenko
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - John R Koenig
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Marc J C Scanio
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Rebecca J Gum
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Odile F El-Kouhen
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Meagan M Fricano
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Greta L Lundgaard
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Torben Neelands
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Xu-Feng Zhang
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Cenchen Zhan
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Madhavi Pai
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | | | - Thomas Hudzik
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Gary Gintant
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Ruth Martin
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Steve McGaraughty
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Jun Xu
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Daniel Bow
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - John C Kalvass
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Philip R Kym
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - David A DeGoey
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
| | - Michael E Kort
- AbbVie, Research and Development, 1 North Waukegan Road, North Chicago, IL 60064, USA
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Zhang Q, Xia Z, Joshi S, Scott VE, Jarvis MF. Optimization of ADME Properties for Sulfonamides Leading to the Discovery of a T-Type Calcium Channel Blocker, ABT-639. ACS Med Chem Lett 2015; 6:641-4. [PMID: 26101566 DOI: 10.1021/acsmedchemlett.5b00023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 04/28/2015] [Indexed: 11/30/2022] Open
Abstract
The discovery of a novel peripherally acting and selective Cav3.2 T-type calcium channel blocker, ABT-639, is described. HTS hits 1 and 2, which have poor metabolic stability, were optimized to obtain 4, which has improved stability and oral bioavailability. Modification of 4 to further improve ADME properties led to the discovery of ABT-639. Following oral administration, ABT-639 produces robust antinociceptive activity in experimental pain models at doses that do not significantly alter psychomotor or hemodynamic function in the rat.
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Affiliation(s)
- Qingwei Zhang
- Neuroscience
Research, AbbVie, 1 North Waukegan Road, North
Chicago, Illinois 60064, United States
| | - Zhiren Xia
- Neuroscience
Research, AbbVie, 1 North Waukegan Road, North
Chicago, Illinois 60064, United States
| | - Shailen Joshi
- Neuroscience
Research, AbbVie, 1 North Waukegan Road, North
Chicago, Illinois 60064, United States
| | - Victoria E. Scott
- Neuroscience
Research, AbbVie, 1 North Waukegan Road, North
Chicago, Illinois 60064, United States
| | - Michael F. Jarvis
- Neuroscience
Research, AbbVie, 1 North Waukegan Road, North
Chicago, Illinois 60064, United States
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Swensen AM, Niforatos W, Lee CH, Jarvis MF, McGaraughty S. Characterization of the triazine, T4, a representative from a novel series of CaV2 inhibitors with strong state-dependence, poor use-dependence, and distinctively fast kinetics. Eur J Pharmacol 2014; 745:234-42. [PMID: 25446431 DOI: 10.1016/j.ejphar.2014.10.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 10/16/2014] [Accepted: 10/22/2014] [Indexed: 12/22/2022]
Abstract
There is strong pharmacological, biological, and genetic evidence supporting the role of N-type calcium channels (CaV2.2) in nociception. There is also human validation data from ziconotide, the CaV2.2-selective peptidyl inhibitor used clinically to treat refractory pain. Unfortunately, ziconotide utility is limited by its narrow therapeutic window and required intrathecal route of administration. A major focus has been placed on identifying state-dependent CaV2.2 inhibitors to improve safety margins. Much less attention, however, has been given to characterizing the kinetics of CaV2.2 inhibitors as a means to further differentiate compounds and maximize therapeutic potential. Here we provide a detailed characterization of the CaV2.2 inhibitor T4 in terms of its state-dependence, use-dependence, kinetics, and mechanism of inhibition. Compound T4 displayed a >20-fold difference in potency when measured under inactivating conditions (IC50=1.1 μM) as compared to closed-state conditions (IC50=25 μM). At 3 μM, T4 produced a 15-fold hyperpolarizing shift in the inactivation curve for CaV2.2 while having no effect on channel activation. To assess the kinetic properties of T4 in a more physiological manner, its inhibition kinetics were assessed at 32°C using 2 mM Ca(2+) as the charge carrier. Surprisingly, the repriming rate for CaV2.2 channels at hyperpolarized potentials was similar in both the presence and absence of T4. This was in contrast to other compounds which markedly delayed repriming. Furthermore, T4 inhibited CaV2.2 channels more potently when channel inactivation was driven through a tonic sub-threshold depolarization rather than through a use-dependent protocol, despite similar levels of inactivation.
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Affiliation(s)
- Andrew M Swensen
- AbbVie Inc., Neuroscience Research & Development, North Chicago, IL 60064-6123, USA.
| | - Wende Niforatos
- AbbVie Inc., Neuroscience Research & Development, North Chicago, IL 60064-6123, USA
| | - Chih-Hung Lee
- AbbVie Inc., Neuroscience Research & Development, North Chicago, IL 60064-6123, USA
| | - Michael F Jarvis
- AbbVie Inc., Neuroscience Research & Development, North Chicago, IL 60064-6123, USA
| | - Steve McGaraughty
- AbbVie Inc., Neuroscience Research & Development, North Chicago, IL 60064-6123, USA
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Mechanistic insights into the analgesic efficacy of A-1264087, a novel neuronal Ca(2+) channel blocker that reduces nociception in rat preclinical pain models. THE JOURNAL OF PAIN 2013; 15:387.e1-14. [PMID: 24374196 DOI: 10.1016/j.jpain.2013.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 11/05/2013] [Accepted: 12/02/2013] [Indexed: 01/06/2023]
Abstract
UNLABELLED Voltage-gated Ca(2+) channels play an important role in nociceptive transmission. There is significant evidence supporting a role for N-, T- and P/Q-type Ca(2+) channels in chronic pain. Here, we report that A-1264087, a structurally novel state-dependent blocker, inhibits each of these human Ca(2+) channels with similar potency (IC50 = 1-2 μM). A-1264087 was also shown to inhibit the release of the pronociceptive calcitonin gene-related peptide from rat dorsal root ganglion neurons. Oral administration of A-1264087 produces robust antinociceptive efficacy in monoiodoacetate-induced osteoarthritic, complete Freund adjuvant-induced inflammatory, and chronic constrictive injury of sciatic nerve-induced, neuropathic pain models with ED50 values of 3.0, 5.7, and 7.8 mg/kg (95% confidence interval = 2.2-3.5, 3.7-10, and 5.5-12.8 mg/kg), respectively. Further analysis revealed that A-1264087 also suppressed nociceptive-induced p38 and extracellular signal-regulated kinase 1/2 phosphorylation, which are biochemical markers of engagement of pain circuitry in chronic pain states. Additionally, A-1264087 inhibited both spontaneous and evoked neuronal activity in the spinal cord dorsal horn in complete Freund adjuvant-inflamed rats, providing a neurophysiological basis for the observed antihyperalgesia. A-1264087 produced no alteration of body temperature or motor coordination and no learning impairment at therapeutic plasma concentrations. PERSPECTIVE The present results demonstrate that the neuronal Ca(2+) channel blocker A-1264087 exhibits broad-spectrum efficacy through engagement of nociceptive signaling pathways in preclinical pain models in the absence of effects on psychomotor and cognitive function.
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Beebe X, Darczak D, Henry RF, Vortherms T, Janis R, Namovic M, Donnelly-Roberts D, Kage KL, Surowy C, Milicic I, Niforatos W, Swensen A, Marsh KC, Wetter JM, Franklin P, Baker S, Zhong C, Simler G, Gomez E, Boyce-Rustay JM, Zhu CZ, Stewart AO, Jarvis MF, Scott VE. Synthesis and SAR of 4-aminocyclopentapyrrolidines as N-type Ca2+ channel blockers with analgesic activity. Bioorg Med Chem 2012; 20:4128-39. [DOI: 10.1016/j.bmc.2012.04.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 04/20/2012] [Accepted: 04/27/2012] [Indexed: 11/24/2022]
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Swensen AM, Niforatos W, Vortherms TA, Perner RJ, Li T, Schrimpf MR, Scott VE, Lee L, Jarvis MF, McGaraughty S. An automated electrophysiological assay for differentiating Ca(v)2.2 inhibitors based on state dependence and kinetics. Assay Drug Dev Technol 2012; 10:542-50. [PMID: 22428804 DOI: 10.1089/adt.2011.437] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Ca(V)2.2 (N-type) calcium channels are key regulators of neurotransmission. Evidence from knockout animals and localization studies suggest that Ca(V)2.2 channels play a critical role in nociceptive transmission. Additionally, ziconotide, a selective peptide inhibitor of Ca(V)2.2 channels, is clinically used to treat refractory pain. However, the use of ziconotide is limited by its low therapeutic index, which is believed, at least in part, to be a consequence of ziconotide inhibiting Ca(V)2.2 channels regardless of the channel state. Subsequent efforts have focused on the discovery of state-dependent inhibitors that preferentially bind to the inactivated state of Ca(V)2.2 channels in order to achieve an improved safety profile relative to ziconotide. Much less attention has been paid to understanding the binding kinetics of these state-dependent inhibitors. Here, we describe a novel electrophysiology-based assay on an automated patch platform designed to differentiate Ca(V)2.2 inhibitors based on their combined state dependence and kinetics. More specifically, this assay assesses inactivated state block, closed state block, and monitors the kinetics of recovery from block when channels move between states. Additionally, a use-dependent assay is described that uses a train of depolarizing pulses to drive channels to a similar level of inactivation for comparison. This use-dependent protocol also provides information on the kinetics of block development. Data are provided to show how these assays can be utilized to screen for kinetic diversity within and across chemical classes.
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Affiliation(s)
- Andrew M Swensen
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6118, USA.
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A-1048400 is a novel, orally active, state-dependent neuronal calcium channel blocker that produces dose-dependent antinociception without altering hemodynamic function in rats. Biochem Pharmacol 2011; 83:406-18. [PMID: 22153861 DOI: 10.1016/j.bcp.2011.10.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 10/31/2011] [Accepted: 10/31/2011] [Indexed: 11/21/2022]
Abstract
Blockade of voltage-gated Ca²⁺ channels on sensory nerves attenuates neurotransmitter release and membrane hyperexcitability associated with chronic pain states. Identification of small molecule Ca²⁺ channel blockers that produce significant antinociception in the absence of deleterious hemodynamic effects has been challenging. In this report, two novel structurally related compounds, A-686085 and A-1048400, were identified that potently block N-type (IC₅₀=0.8 μM and 1.4 μM, respectively) and T-type (IC₅₀=4.6 μM and 1.2 μM, respectively) Ca²⁺ channels in FLIPR based Ca²⁺ flux assays. A-686085 also potently blocked L-type Ca²⁺ channels (EC₅₀=0.6 μM), however, A-1048400 was much less active in blocking this channel (EC₅₀=28 μM). Both compounds dose-dependently reversed tactile allodynia in a model of capsaicin-induced secondary hypersensitivity with similar potencies (EC₅₀=300-365 ng/ml). However, A-686085 produced dose-related decreases in mean arterial pressure at antinociceptive plasma concentrations in the rat, while A-1048400 did not significantly alter hemodynamic function at supra-efficacious plasma concentrations. Electrophysiological studies demonstrated that A-1048400 blocks native N- and T-type Ca²⁺ currents in rat dorsal root ganglion neurons (IC₅₀=3.0 μM and 1.6 μM, respectively) in a voltage-dependent fashion. In other experimental pain models, A-1048400 dose-dependently attenuated nociceptive, neuropathic and inflammatory pain at doses that did not alter psychomotor or hemodynamic function. The identification of A-1048400 provides further evidence that voltage-dependent inhibition of neuronal Ca²⁺ channels coupled with pharmacological selectivity vs. L-type Ca²⁺ channels can provide robust antinociception in the absence of deleterious effects on hemodynamic or psychomotor function.
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