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Wu Y, Li Z, Huang YY, Wu D, Luo HB. Novel Phosphodiesterase Inhibitors for Cognitive Improvement in Alzheimer's Disease. J Med Chem 2018; 61:5467-5483. [PMID: 29363967 DOI: 10.1021/acs.jmedchem.7b01370] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Alzheimer's disease (AD) is one of the greatest public health challenges. Phosphodiesterases (PDEs) are a superenzyme family responsible for the hydrolysis of two second messengers: cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). Since several PDE subfamilies are highly expressed in the human brain, the inhibition of PDEs is involved in neurodegenerative processes by regulating the concentration of cAMP and/or cGMP. Currently, PDEs are considered as promising targets for the treatment of AD since many PDE inhibitors have exhibited remarkable cognitive improvement effects in preclinical studies and over 15 of them have been subjected to clinical trials. The aim of this review is to summarize the outstanding progress that has been made by PDE inhibitors as anti-AD agents with encouraging results in preclinical studies and clinical trials. The binding affinity, pharmacokinetics, underlying mechanisms, and limitations of these PDE inhibitors in the treatment of AD are also reviewed and discussed.
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Affiliation(s)
- Yinuo Wu
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P. R. China
| | - Zhe Li
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P. R. China
| | - Yi-You Huang
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P. R. China
| | - Deyan Wu
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P. R. China
| | - Hai-Bin Luo
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P. R. China
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Wennogle LP, Hoxie H, Peng Y, Hendrick JP. Phosphodiesterase 1: A Unique Drug Target for Degenerative Diseases and Cognitive Dysfunction. ADVANCES IN NEUROBIOLOGY 2018; 17:349-384. [PMID: 28956339 DOI: 10.1007/978-3-319-58811-7_13] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The focus of this chapter is on the cyclic nucleotide phosphodiesterase 1 (PDE1) family. PDE1 is one member of the 11 PDE families (PDE 1-11). It is the only phosphodiesterase family that is calcium/calmodulin activated. As a result, whereas other families of PDEs 2-11 play a dominant role controlling basal levels of cyclic nucleotides, PDE1 is involved when intra-cellular calcium levels are elevated and, thus, has an "on demand" or activity-dependent involvement in the control of cyclic nucleotides in excitatory cells including neurons, cardiomyocytes and smooth muscle. As a Class 1 phosphodiesterase, PDE1 hydrolyzes the 3' bond of 3'-5'-cyclic nucleotides, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). Here, we review evidence for this family of enzymes as drug targets for development of therapies aimed to address disorders of the central nervous system (CNS) and of degenerative diseases. The chapter includes sections on the potential for cognitive enhancement in mental disorders, as well as a review of PDE1 enzyme structure, enzymology, tissue distribution, genomics, inhibitors, pharmacology, clinical trials, and therapeutic indications. Information is taken from public databases. A number of excellent reviews of the phosphodiesterase family have been written as well as reviews of the PDE1 family. References cited here are not comprehensive, rather pointing to major reviews and key publications.
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Affiliation(s)
- Lawrence P Wennogle
- Alexandria Center for Life Science, Intra-Cellular Therapies, Inc., New York, 10016, NY, USA.
| | - Helen Hoxie
- Alexandria Center for Life Science, Intra-Cellular Therapies, Inc., New York, 10016, NY, USA
| | - Youyi Peng
- Rutgers University, 7 College Ave, New Brunswick, NJ, 08901, USA
| | - Joseph P Hendrick
- Alexandria Center for Life Science, Intra-Cellular Therapies, Inc., New York, 10016, NY, USA
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Khammy MM, Dalsgaard T, Larsen PH, Christoffersen CT, Clausen D, Rasmussen LK, Folkersen L, Grunnet M, Kehler J, Aalkjaer C, Nielsen J. PDE1A inhibition elicits cGMP-dependent relaxation of rat mesenteric arteries. Br J Pharmacol 2017; 174:4186-4198. [PMID: 28910498 DOI: 10.1111/bph.14034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 08/18/2017] [Accepted: 09/07/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND AND PURPOSE PDE1, a subfamily of cyclic nucleotide PDEs consisting of three isoforms, PDE1A, PDE1B and PDE1C, has been implicated in the regulation of vascular tone. The PDE1 isoform(s) responsible for tone regulation is unknown. This study used isoform-preferring PDE1 inhibitors, Lu AF58027, Lu AF64196, Lu AF66896 and Lu AF67897, to investigate the relative contribution of PDE1 isoforms to regulation of vascular tone. EXPERIMENTAL APPROACH In rat mesenteric arteries, expression and localization of Pde1 isoforms were determined by quantitative PCR and in situ hybridization, and physiological impact of PDE1 inhibition was evaluated by isometric tension recordings. KEY RESULTS In rat mesenteric arteries, Pde1a mRNA expression was higher than Pde1b and Pde1c. In situ hybridization revealed localization of Pde1a to vascular smooth muscle cells (VSMCs) and only minor appearance of Pde1b and Pde1c. The potency of the PDE1 inhibitors at eliciting relaxation showed excellent correlation with their potency at inhibiting PDE1A. Thus, Lu AF58027 was the most potent at inhibiting PDE1A and was also the most potent at eliciting relaxation in mesenteric arteries. Inhibition of NOS with l-NAME, soluble GC with ODQ or PKG with Rp-8-Br-PET-cGMP all attenuated the inhibitory effect of PDE1 on relaxation, whereas PKA inhibition with H89 had no effect. CONCLUSIONS AND IMPLICATIONS Pde1a is the dominant PDE1 isoform present in VSMCs, and relaxation mediated by PDE1A inhibition is predominantly driven by enhanced cGMP signalling. These results imply that isoform-selective PDE1 inhibitors are powerful investigative tools allowing examination of physiological and pathological roles of PDE1 isoforms.
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Affiliation(s)
- Makhala Michell Khammy
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Thomas Dalsgaard
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Dorte Clausen
- Division of Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark
| | | | - Lasse Folkersen
- Division of Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark
| | - Morten Grunnet
- Division of Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark
| | - Jan Kehler
- Division of Discovery Chemistry and DMPK, H. Lundbeck A/S, Valby, Denmark
| | - Christian Aalkjaer
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Jacob Nielsen
- Division of Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark
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Mikami S, Sasaki S, Asano Y, Ujikawa O, Fukumoto S, Nakashima K, Oki H, Kamiguchi N, Imada H, Iwashita H, Taniguchi T. Discovery of an Orally Bioavailable, Brain-Penetrating, in Vivo Active Phosphodiesterase 2A Inhibitor Lead Series for the Treatment of Cognitive Disorders. J Med Chem 2017; 60:7658-7676. [PMID: 28759228 DOI: 10.1021/acs.jmedchem.7b00709] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, we describe the discovery of a potent, selective, brain-penetrating, in vivo active phosphodiesterase (PDE) 2A inhibitor lead series. To identify high-quality leads suitable for optimization and enable validation of the physiological function of PDE2A in vivo, structural modifications of the high-throughput screening hit 18 were performed. Our lead generation efforts revealed three key potency-enhancing functionalities with minimal increases in molecular weight (MW) and no change in topological polar surface area (TPSA). Combining these structural elements led to the identification of 6-methyl-N-((1R)-1-(4-(trifluoromethoxy)phenyl)propyl)pyrazolo[1,5-a]pyrimidine-3-carboxamide (38a), a molecule with the desired balance of preclinical properties. Further characterization by cocrystal structure analysis of 38a bound to PDE2A uncovered a unique binding mode and provided insights into its observed potency and PDE selectivity. Compound 38a significantly elevated 3',5'-cyclic guanosine monophosphate (cGMP) levels in mouse brain following oral administration, thus validating this compound as a useful pharmacological tool and an attractive lead for future optimization.
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Affiliation(s)
- Satoshi Mikami
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Shigekazu Sasaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Yasutomi Asano
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Osamu Ujikawa
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Shoji Fukumoto
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kosuke Nakashima
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hideyuki Oki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Naomi Kamiguchi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Haruka Imada
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Hiroki Iwashita
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Takahiko Taniguchi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited , 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
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Prickaerts J, Heckman PRA, Blokland A. Investigational phosphodiesterase inhibitors in phase I and phase II clinical trials for Alzheimer's disease. Expert Opin Investig Drugs 2017; 26:1033-1048. [PMID: 28772081 DOI: 10.1080/13543784.2017.1364360] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Phosphodiesterase (PDE) inhibitors improve signaling pathways in brain circuits by increasing intracellular cyclic adenosine monophosphate (cAMP) and/or cyclic guanosine monophosphate (cGMP). In the last decade, the first clinical studies investigating selective PDE inhibitors in Alzheimer's disease (AD) have been initiated, based on their positive effects on cognitive processes and neuroprotection in numerous animal studies. Areas covered: This article reviews the clinical studies investigating the pro-cognitive/neuroprotective effects of PDE inhibitors in patients with AD, as well as in age-associated memory impaired elderly and patients with mild cognitive impairment (MCI), the prodromal stage of AD. PDE inhibitors will also be discussed with respect to adverse effects including safety and tolerability. Expert opinion: The limited available data of clinical studies with PDE inhibitors tested in different populations of AD patients do not allow the drawing of any concrete conclusion yet. Currently, studies with a PDE3 (cilostazol) or PDE9 inhibitor (BI 409,306) are still ongoing in patients with MCI or AD, respectively. Studies with PDE4 inhibitors (HT-0712, roflumilast and BPN14770) in healthy elderly and elderly with age-associated memory impairments indicate that the optimum dose and/or inhibiting the most relevant PDE isoform hold great promise when tested in the appropriate population of patients with MCI or AD eventually.
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Affiliation(s)
- Jos Prickaerts
- a Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience , Maastricht University , Maastricht , The Netherlands
| | - Pim R A Heckman
- a Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience , Maastricht University , Maastricht , The Netherlands.,b Department of Neuropsychology and Psychopharmacology , Maastricht University , Maastricht , The Netherlands
| | - Arjan Blokland
- b Department of Neuropsychology and Psychopharmacology , Maastricht University , Maastricht , The Netherlands
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Phosphodiesterase-1b (Pde1b) knockout mice are resistant to forced swim and tail suspension induced immobility and show upregulation of Pde10a. Psychopharmacology (Berl) 2017; 234:1803-1813. [PMID: 28337525 DOI: 10.1007/s00213-017-4587-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 03/01/2017] [Indexed: 01/21/2023]
Abstract
RATIONALE Major depressive disorder is a leading cause of suicide and disability. Despite this, current antidepressants provide insufficient efficacy in more than 60% of patients. Most current antidepressants are presynaptic reuptake inhibitors; postsynaptic signal regulation has not received as much attention as potential treatment targets. OBJECTIVES We examined the effects of disruption of the postsynaptic cyclic nucleotide hydrolyzing enzyme, phosphodiesterase (PDE) 1b, on depressive-like behavior and the effects on PDE1B protein in wild-type (WT) mice following stress. METHODS Littermate knockout (KO) and WT mice were tested in locomotor activity, tail suspension (TST), and forced swim tests (FST). FST was also used to compare the effects of two antidepressants, fluoxetine and bupropion, in KO versus WT mice. Messenger RNA (mRNA) expression changes were also determined. WT mice underwent acute or chronic stress and markers of stress and PDE1B expression were examined. RESULTS Pde1b KO mice exhibited decreased TST and FST immobility. When treated with antidepressants, both WT and KO mice showed decreased FST immobility and the effect was additive in KO mice. Mice lacking Pde1b had increased striatal Pde10a mRNA expression. In WT mice, acute and chronic stress upregulated PDE1B expression while PDE10A expression was downregulated after chronic but not acute stress. CONCLUSIONS PDE1B is a potential therapeutic target for depression treatment because of the antidepressant-like phenotype seen in Pde1b KO mice.
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Dyck B, Branstetter B, Gharbaoui T, Hudson AR, Breitenbucher JG, Gomez L, Botrous I, Marrone T, Barido R, Allerston CK, Cedervall EP, Xu R, Sridhar V, Barker R, Aertgeerts K, Schmelzer K, Neul D, Lee D, Massari ME, Andersen CB, Sebring K, Zhou X, Petroski R, Limberis J, Augustin M, Chun LE, Edwards TE, Peters M, Tabatabaei A. Discovery of Selective Phosphodiesterase 1 Inhibitors with Memory Enhancing Properties. J Med Chem 2017; 60:3472-3483. [DOI: 10.1021/acs.jmedchem.7b00302] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Brian Dyck
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Bryan Branstetter
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Tawfik Gharbaoui
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Andrew R. Hudson
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - J. Guy Breitenbucher
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Laurent Gomez
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Iriny Botrous
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Tami Marrone
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Richard Barido
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Charles K. Allerston
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - E. Peder Cedervall
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Rui Xu
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Vandana Sridhar
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Ryan Barker
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Kathleen Aertgeerts
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Kara Schmelzer
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - David Neul
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Dong Lee
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Mark Eben Massari
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Carsten B. Andersen
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Kristen Sebring
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Xianbo Zhou
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Robert Petroski
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - James Limberis
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Martin Augustin
- Proteros Biostructures GmbH, Bunsenstraße 7a, D-82152 Martinsried, Germany
| | - Lawrence E. Chun
- Berylllium, 7869 NE Day Road West, Bainbridge
Island, Washington 98110, United States
| | - Thomas E. Edwards
- Berylllium, 7869 NE Day Road West, Bainbridge
Island, Washington 98110, United States
| | - Marco Peters
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
| | - Ali Tabatabaei
- Dart Neuroscience LLC, 12278 Scripps Summit Drive, San Diego, California 92131, United States
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Amin SA, Bhargava S, Adhikari N, Gayen S, Jha T. Exploring pyrazolo[3,4-d]pyrimidine phosphodiesterase 1 (PDE1) inhibitors: a predictive approach combining comparative validated multiple molecular modelling techniques. J Biomol Struct Dyn 2017; 36:590-608. [DOI: 10.1080/07391102.2017.1288659] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sk. Abdul Amin
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, P. O. Box 17020, Kolkata 700032, West Bengal, India
| | - Sonam Bhargava
- Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences, Dr. Harisingh Gour University, Sagar 470003, Madhya Pradesh, India
| | - Nilanjan Adhikari
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, P. O. Box 17020, Kolkata 700032, West Bengal, India
| | - Shovanlal Gayen
- Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences, Dr. Harisingh Gour University, Sagar 470003, Madhya Pradesh, India
| | - Tarun Jha
- Natural Science Laboratory, Division of Medicinal and Pharmaceutical Chemistry, Department of Pharmaceutical Technology, Jadavpur University, P. O. Box 17020, Kolkata 700032, West Bengal, India
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Heckman PRA, van Duinen MA, Bollen EPP, Nishi A, Wennogle LP, Blokland A, Prickaerts J. Phosphodiesterase Inhibition and Regulation of Dopaminergic Frontal and Striatal Functioning: Clinical Implications. Int J Neuropsychopharmacol 2016; 19:pyw030. [PMID: 27037577 PMCID: PMC5091819 DOI: 10.1093/ijnp/pyw030] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 03/30/2016] [Accepted: 03/30/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The fronto-striatal circuits are the common neurobiological basis for neuropsychiatric disorders, including schizophrenia, Parkinson's disease, Huntington's disease, attention deficit hyperactivity disorder, obsessive-compulsive disorder, and Tourette's syndrome. Fronto-striatal circuits consist of motor circuits, associative circuits, and limbic circuits. All circuits share 2 common features. First, all fronto-striatal circuits consist of hyper direct, direct, and indirect pathways. Second, all fronto-striatal circuits are modulated by dopamine. Intracellularly, the effect of dopamine is largely mediated through the cyclic adenosine monophosphate/protein kinase A signaling cascade with an additional role for the cyclic guanosine monophosphate/protein kinase G pathway, both of which can be regulated by phosphodiesterases. Phosphodiesterases are thus a potential target for pharmacological intervention in neuropsychiatric disorders related to dopaminergic regulation of fronto-striatal circuits. METHODS Clinical studies of the effects of different phosphodiesterase inhibitors on cognition, affect, and motor function in relation to the fronto-striatal circuits are reviewed. RESULTS Several selective phosphodiesterase inhibitors have positive effects on cognition, affect, and motor function in relation to the fronto-striatal circuits. CONCLUSION Increased understanding of the subcellular localization and unraveling of the signalosome concept of phosphodiesterases including its function and dysfunction in the fronto-striatal circuits will contribute to the design of new specific inhibitors and enhance the potential of phosphodiesterase inhibitors as therapeutics in fronto-striatal circuits.
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Snyder GL, Prickaerts J, Wadenberg ML, Zhang L, Zheng H, Yao W, Akkerman S, Zhu H, Hendrick JP, Vanover KE, Davis R, Li P, Mates S, Wennogle LP. Preclinical profile of ITI-214, an inhibitor of phosphodiesterase 1, for enhancement of memory performance in rats. Psychopharmacology (Berl) 2016; 233:3113-24. [PMID: 27342643 PMCID: PMC4980415 DOI: 10.1007/s00213-016-4346-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 06/07/2016] [Indexed: 01/07/2023]
Abstract
RATIONALE Therapeutic agents for memory enhancement in psychiatric disorders, such as schizophrenia, are urgently needed. OBJECTIVE The aim of this study is to characterize the preclinical profile of ITI-214, a potent inhibitor of phosphodiesterase 1 (PDE1). METHODS ITI-214 was assayed for inhibition of PDE1 versus other PDE enzyme families using recombinant human PDE enzymes and for off-target binding to 70 substrates (General SEP II diversity panel; Caliper Life Sciences). Effects of ITI-214 (0.1-10 mg/kg, po) on memory performance were assayed in rats using the novel object recognition (NOR) paradigm, with drug given at specified time points prior to or following exposure to objects in an open field. ITI-214 was evaluated for potential drug-drug interaction with risperidone in rats using conditioned avoidance response (CAR) and pharmacokinetic assessments. RESULTS ITI-214 inhibited PDE1A (K i = 33 pmol) with >1000-fold selectivity for the nearest other PDE family (PDE4D) and displayed minimal off-target binding interactions in a 70-substrate selectivity profile. By using specific timing of oral ITI-214 administration, it was demonstrated in the NOR that ITI-214 is able to enhance acquisition, consolidation, and retrieval memory processes. All memory effects were in the absence of effects on exploratory behavior. ITI-214 did not disrupt the risperidone pharmacokinetic profile or effects in CAR. CONCLUSIONS ITI-214 improved the memory processes of acquisition, consolidation, and retrieval across a broad dose range (0.1-10 mg/kg, po) without disrupting the antipsychotic-like activity of a clinical antipsychotic medication, specifically risperidone. Clinical development of ITI-214 is currently in progress.
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Affiliation(s)
- Gretchen L. Snyder
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Jos Prickaerts
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, P.O. Box 616, NL-6200 Maastricht, MD The Netherlands
| | | | - Lei Zhang
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Hailin Zheng
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Wei Yao
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Sven Akkerman
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, P.O. Box 616, NL-6200 Maastricht, MD The Netherlands
| | - Hongwen Zhu
- Tianjin Hospital, Tianjin, 300211 People’s Republic of China
| | - Joseph P. Hendrick
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Kimberly E. Vanover
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Robert Davis
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Peng Li
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Sharon Mates
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
| | - Lawrence P. Wennogle
- Intra-Cellular Therapies Inc., 430 East 29th Street, Suite 900, New York, NY 10016 USA
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