1
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Small molecules targeting γ-secretase and their potential biological applications. Eur J Med Chem 2022; 232:114169. [DOI: 10.1016/j.ejmech.2022.114169] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 01/30/2022] [Accepted: 01/30/2022] [Indexed: 12/14/2022]
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2
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Mango D, Nisticò R. Neurodegenerative Disease: What Potential Therapeutic Role of Acid-Sensing Ion Channels? Front Cell Neurosci 2021; 15:730641. [PMID: 34690702 PMCID: PMC8531221 DOI: 10.3389/fncel.2021.730641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/15/2021] [Indexed: 12/19/2022] Open
Abstract
Acidic pH shift occurs in many physiological neuronal activities such as synaptic transmission and synaptic plasticity but also represents a characteristic feature of many pathological conditions including inflammation and ischemia. Neuroinflammation is a complex process that occurs in various neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and Huntington’s disease. Acid-sensing ion channels (ASICs) represent a widely expressed pH sensor in the brain that play a key role in neuroinflammation. On this basis, acid-sensing ion channel blockers are able to exert neuroprotective effects in different neurodegenerative diseases. In this review, we discuss the multifaceted roles of ASICs in brain physiology and pathology and highlight ASIC1a as a potential pharmacological target in neurodegenerative diseases.
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Affiliation(s)
- Dalila Mango
- Laboratory of Pharmacology of Synaptic Plasticity, European Brain Research Institute, Rome, Italy.,School of Pharmacy, University of Rome "Tor Vergata", Rome, Italy
| | - Robert Nisticò
- Laboratory of Pharmacology of Synaptic Plasticity, European Brain Research Institute, Rome, Italy.,School of Pharmacy, University of Rome "Tor Vergata", Rome, Italy
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Jia H, Wang Z, Zhang J, Feng F. γ-Secretase inhibitors for breast cancer and hepatocellular carcinoma: From mechanism to treatment. Life Sci 2021; 268:119007. [PMID: 33428878 DOI: 10.1016/j.lfs.2020.119007] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 12/21/2022]
Abstract
The γ-secretase complex is a key hydrolase for many type 1 transmembrane proteins. It is very important for activation of the Notch receptor and regulation of target-gene transcription. Abnormal activation and expression of the Notch pathway are closely related to the occurrence and development of many tumor types, including breast cancer and liver cancer. In this review, we elaborated on the basic situation of γ-secretase complex and the biological function and role of γ-secretase in APP and Notch signal pathway are described in detail. Subsequently, all currently known γ-secretase inhibitors and γ-secretase modulators are listed and their mechanism of action, value of IC50, chemical structure and current research stage are summarized. Next, the selection presented the treatment progress of γ-secretase inhibitors in breast cancer and hepatocellular carcinoma in the past five years. Finally, the mechanism of action of γ-secretase-mediated breast cancer and hepatocellular carcinoma and the advantages and disadvantages of γ-secretase inhibitors are discussed, and the concept of further research is proposed.
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Affiliation(s)
- Hui Jia
- Department of Pharmacy, General Hospital of Northern Theater Command, No. 83 Wenhua Road, Shenhe District, Shenyang City 110840, Liaoning Province, PR China; School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110006, PR China
| | - Zuojun Wang
- Department of Pharmacy, General Hospital of Northern Theater Command, No. 83 Wenhua Road, Shenhe District, Shenyang City 110840, Liaoning Province, PR China
| | - Jingyi Zhang
- Department of Pharmacy, General Hospital of Northern Theater Command, No. 83 Wenhua Road, Shenhe District, Shenyang City 110840, Liaoning Province, PR China.
| | - Fan Feng
- Center for Clinical Laboratory, The Fifth Medical Center, General Hospital of Chinese PLA, Beijing 100039, PR China.
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4
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Osmakov DI, Khasanov TA, Andreev YA, Lyukmanova EN, Kozlov SA. Animal, Herb, and Microbial Toxins for Structural and Pharmacological Study of Acid-Sensing Ion Channels. Front Pharmacol 2020; 11:991. [PMID: 32733241 PMCID: PMC7360831 DOI: 10.3389/fphar.2020.00991] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/19/2020] [Indexed: 12/22/2022] Open
Abstract
Acid-sensing ion channels (ASICs) are of the most sensitive molecular sensors of extracellular pH change in mammals. Six isoforms of these channels are widely represented in membranes of neuronal and non-neuronal cells, where these molecules are involved in different important regulatory functions, such as synaptic plasticity, learning, memory, and nociception, as well as in various pathological states. Structural and functional studies of both wild-type and mutant ASICs are essential for human care and medicine for the efficient treatment of socially significant diseases and ensure a comfortable standard of life. Ligands of ASICs serve as indispensable tools for these studies. Such bioactive compounds can be synthesized artificially. However, to date, the search for such molecules has been most effective amongst natural sources, such as animal venoms or plants and microbial extracts. In this review, we provide a detailed and comprehensive structural and functional description of natural compounds acting on ASICs, as well as the latest information on structural aspects of their interaction with the channels. Many of the examples provided in the review demonstrate the undoubted fundamental and practical successes of using natural toxins. Without toxins, it would not be possible to obtain data on the mechanisms of ASICs' functioning, provide detailed study of their pharmacological properties, or assess the contribution of the channels to development of different pathologies. The selectivity to different isoforms and variety in the channel modulation mode allow for the appraisal of prospective candidates for the development of new drugs.
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Affiliation(s)
- Dmitry I. Osmakov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Timur A. Khasanov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Yaroslav A. Andreev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Ekaterina N. Lyukmanova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Sergey A. Kozlov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
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5
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Mango D, Nisticò R. Role of ASIC1a in Normal and Pathological Synaptic Plasticity. Rev Physiol Biochem Pharmacol 2020; 177:83-100. [PMID: 32789788 DOI: 10.1007/112_2020_45] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Acid-sensing ion channels (ASICs), members of the degenerin/epithelial Na+ channel superfamily, are broadly distributed in the mammalian nervous system where they play important roles in a variety of physiological processes, including neurotransmission and memory-related behaviors. In the last few years, we and others have investigated the role of ASIC1a in different forms of synaptic plasticity especially in the CA1 area of the hippocampus. This review summarizes the latest research linking ASIC1a to synaptic function either in physiological or pathological conditions. A better understanding of how these channels are regulated in brain circuitries relevant to synaptic plasticity and memory may offer novel targets for pharmacological intervention in neuropsychiatric and neurological disorders.
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Affiliation(s)
- Dalila Mango
- Laboratory of Pharmacology of Synaptic Plasticity, EBRI Rita Levi-Montalcini Foundation, Rome, Italy.
| | - Robert Nisticò
- Laboratory of Pharmacology of Synaptic Plasticity, EBRI Rita Levi-Montalcini Foundation, Rome, Italy
- School of Pharmacy, University of Rome Tor Vergata, Rome, Italy
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6
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Wan Y, Yu Y, Pan X, Mo X, Gong W, Liu X, Chen S. Inhibition on acid-sensing ion channels and analgesic activities of flavonoids isolated from dragon's blood resin. Phytother Res 2019; 33:718-727. [PMID: 30618119 DOI: 10.1002/ptr.6262] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 10/08/2018] [Accepted: 11/23/2018] [Indexed: 11/08/2022]
Abstract
Acid-sensing ion channel (ASIC) serves important roles in the transmission of nociceptive information. To confirm the analgesic mechanism of dragon's blood resin, patch-clamp technique, in vivo animal experiments, and immunohistochemical staining were used to observe the effects of the three flavonoids (loureirin B, cochinchinemin A, and cochinchinemin B) isolated from dragon's blood resin on ASIC. Results showed that the three flavonoids exerted various inhibitory effects on ASIC currents in rat dorsal root ganglion (DRG) neurons. The combination of the three flavonoids with total concentration of 6.5 μM could decrease (53.8 ± 4.3%) of the peak amplitude and (45.8 ± 4.5%) of the sustained portion of ASIC currents. The combination of the three flavonoids was fully efficacious on complete Freud's adjuvant (CFA)-induced inflammatory thermal hyperalgesia at a dose of 6.5 mM similar with amiloride at 10 mM. The analgesic effects of the combination could be weakened by an ASIC activator 2-guanidine-4-methylquinazoline. CFA-induced hyperalgesia was accompanied by c-Fos up-regulation in DRG neurons, and the combination rescued thermal hyperalgesia through down-regulation of c-Fos and ASIC3 expression in CFA-induced inflammation. These collective results suggested that the flavonoids isolated from dragon's blood resin could be considered as the chemical compounds that exert analgesic effects on inflammatory thermal pain due to action on ASIC.
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Affiliation(s)
- Ying Wan
- College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China.,Key Laboratory of Cognitive Science of State Ethnic Affairs Commission, Wuhan, China.,Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment, Wuhan, China
| | - Yi Yu
- College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China.,Key Laboratory of Cognitive Science of State Ethnic Affairs Commission, Wuhan, China.,Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment, Wuhan, China
| | - Xinxin Pan
- College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China.,Key Laboratory of Cognitive Science of State Ethnic Affairs Commission, Wuhan, China.,Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment, Wuhan, China
| | - Xiaoqiang Mo
- Basic Medical College, Youjiang Medical University for Nationalities, Baise, China
| | - Weifan Gong
- College of Pharmacy, South-Central University for Nationalities, Wuhan, China
| | - Xiangming Liu
- School of Nursing, Gongqing Institute of Science and Technology, Jiujiang, China
| | - Su Chen
- College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China.,Key Laboratory of Cognitive Science of State Ethnic Affairs Commission, Wuhan, China.,Hubei Key Laboratory of Medical Information Analysis and Tumor Diagnosis and Treatment, Wuhan, China
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Chauhan AS, Sahoo GC, Dikhit MR, Das P. Acid-Sensing Ion Channels Structural Aspects, Pathophysiological Importance and Experimental Mutational Data Available Across Various Species to Target Human ASIC1. Curr Drug Targets 2018; 20:111-121. [DOI: 10.2174/1389450119666180820103316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 08/01/2018] [Accepted: 08/15/2018] [Indexed: 01/16/2023]
Abstract
The H+-gated (proton) currents are widely present in brain sensory neuronal system and
various studies identified the structural units and deciphered the physiological and pathological function
of ion channels. The normal neuron requires an optimal pH to carry out its functions. In acidosis,
the ASICs (Acid-sensing Ion Channels) are activated in both the CNS (central nervous system) and
PNS (peripheral nervous system). ASICs are related to degenerin channels (DEGs), epithelial sodium
cation channels (ENaCs), and FMRF-amide (Phe-Met-Arg-Phe-NH2)-gated channels (FaNaC). Its activation
leads physiologically to pain perception, synaptic plasticity, learning and memory, fear,
ischemic neuronal injury, seizure termination, neuronal degeneration, and mechanosensation. It detects
the level of acid fluctuation in the extracellular environment and responds to acidic pH by increasing
the rate of membrane depolarization. It conducts cations like Na+ (Sodium) and Ca2+ (Calcium)
ions across the membrane upon protonation. The ASICs subtypes are characterized by differing
biophysical properties and pH sensitivities. The subtype ASIC1 is involved in various CNS diseases
and therefore focusing on its specific functional properties will guide in drug design methods. The review
highlights the cASIC1 (Chicken ASIC1) crystal structures, involvement in physiological environment
and limitations of currently available inhibitors. In addition, it details the mutational data
available to design an inhibitor against hASIC1 (Human ASIC1).
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Affiliation(s)
- Anurag Singh Chauhan
- Biomedical Informatics, Rajendra Memorial Research Institute of Medical Sciences (Indian Council of Medical Research), Agamkuan, Patna- 800 007, Bihar, India
| | - Ganesh Chandra Sahoo
- Biomedical Informatics, Rajendra Memorial Research Institute of Medical Sciences (Indian Council of Medical Research), Agamkuan, Patna- 800 007, Bihar, India
| | - Manas Ranjan Dikhit
- Biomedical Informatics, Rajendra Memorial Research Institute of Medical Sciences (Indian Council of Medical Research), Agamkuan, Patna- 800 007, Bihar, India
| | - Pradeep Das
- Department of Molecular Parasitology, Rajendra Memorial Research Institute of Medical Sciences (Indian Council of Medical Research), Agamkuan, Patna- 800 007, Bihar, India
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Lynagh T, Romero-Rojo JL, Lund C, Pless SA. Molecular Basis for Allosteric Inhibition of Acid-Sensing Ion Channel 1a by Ibuprofen. J Med Chem 2017; 60:8192-8200. [PMID: 28949138 DOI: 10.1021/acs.jmedchem.7b01072] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A growing body of evidence links certain aspects of nonsteroidal anti-inflammatory drug (NSAID) pharmacology with acid-sensing ion channels (ASICs), a small family of excitatory neurotransmitter receptors implicated in pain and neuroinflammation. The molecular basis of NSAID inhibition of ASICs has remained unknown, hindering the exploration of this line of therapy. Here, we characterized the mechanism of inhibition, explored the molecular determinants of sensitivity, and sought to establish informative structure-activity relationships, using electrophysiology, site-directed mutagenesis, and voltage-clamp fluorometry. Our results show that ibuprofen is an allosteric inhibitor of ASIC1a, which binds to a crucial site in the agonist transduction pathway and causes conformational changes that oppose channel activation. Ibuprofen inhibits several ASIC subtypes, but certain ibuprofen derivatives show some selectivity for ASIC1a over ASIC2a and vice versa. These results thus define the NSAID/ASIC interaction and pave the way for small-molecule drug design targeting pain and inflammation.
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Affiliation(s)
- Timothy Lynagh
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen , Jagtvej 160, 2100 Copenhagen, Denmark
| | - José Luis Romero-Rojo
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen , Jagtvej 160, 2100 Copenhagen, Denmark
| | - Camilla Lund
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen , Jagtvej 160, 2100 Copenhagen, Denmark
| | - Stephan A Pless
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen , Jagtvej 160, 2100 Copenhagen, Denmark
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9
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Acid-Sensing Ion Channels as Potential Therapeutic Targets in Neurodegeneration and Neuroinflammation. Mediators Inflamm 2017; 2017:3728096. [PMID: 29056828 PMCID: PMC5625748 DOI: 10.1155/2017/3728096] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 07/29/2017] [Accepted: 08/13/2017] [Indexed: 12/21/2022] Open
Abstract
Acid-sensing ion channels (ASICs) are a family of proton-sensing channels that are voltage insensitive, cation selective (mostly permeable to Na+), and nonspecifically blocked by amiloride. Derived from 5 genes (ACCN1-5), 7 subunits have been identified, 1a, 1b, 2a, 2b, 3, 4, and 5, that are widely expressed in the peripheral and central nervous system as well as other tissues. Over the years, different studies have shown that activation of these channels is linked to various physiological and pathological processes, such as memory, learning, fear, anxiety, ischemia, and multiple sclerosis to name a few, so their potential as therapeutic targets is increasing. This review focuses on recent advances that have helped us to better understand the role played by ASICs in different pathologies related to neurodegenerative diseases, inflammatory processes, and pain.
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10
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Rash LD. Acid-Sensing Ion Channel Pharmacology, Past, Present, and Future …. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2017; 79:35-66. [PMID: 28528673 DOI: 10.1016/bs.apha.2017.02.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
pH is one of the most strictly controlled parameters in mammalian physiology. An extracellular pH of ~7.4 is crucial for normal physiological processes, and perturbations to this have profound effects on cell function. Acidic microenvironments occur in many physiological and pathological conditions, including inflammation, bone remodeling, ischemia, trauma, and intense synaptic activity. Cells exposed to these conditions respond in different ways, from tumor cells that thrive to neurons that are either suppressed or hyperactivated, often fatally. Acid-sensing ion channels (ASICs) are primary pH sensors in mammals and are expressed widely in neuronal and nonneuronal cells. There are six main subtypes of ASICs in rodents that can form homo- or heteromeric channels resulting in many potential combinations. ASICs are present and activated under all of the conditions mentioned earlier, suggesting that they play an important role in how cells respond to acidosis. Compared to many other ion channel families, ASICs were relatively recently discovered-1997-and there is a substantial lack of potent, subtype-selective ligands that can be used to elucidate their structural and functional properties. In this chapter I cover the history of ASIC channel pharmacology, which began before the proteins were even identified, and describe the current arsenal of tools available, their limitations, and take a glance into the future to predict from where new tools are likely to emerge.
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Affiliation(s)
- Lachlan D Rash
- School of Biomedical Sciences, The University of Queensland, St Lucia, QLD, Australia.
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11
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Mango D, Braksator E, Battaglia G, Marcelli S, Mercuri NB, Feligioni M, Nicoletti F, Bashir ZI, Nisticò R. Acid-sensing ion channel 1a is required for mGlu receptor dependent long-term depression in the hippocampus. Pharmacol Res 2017; 119:12-19. [PMID: 28137639 DOI: 10.1016/j.phrs.2017.01.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 01/24/2017] [Accepted: 01/25/2017] [Indexed: 01/18/2023]
Abstract
Acid-sensing ion channels (ASICs), members of the degenerin/epithelial Na+ channel superfamily, are widely distributed in the mammalian nervous system. ASIC1a is highly permeable to Ca2+ and are thought to be important in a variety of physiological processes, including synaptic plasticity, learning and memory. To further understand the role of ASIC1a in synaptic transmission and plasticity, we investigated metabotropic glutamate (mGlu) receptor-dependent long-term depression (LTD) in the hippocampus. We found that ASIC1a channels mediate a component of LTD in P30-40 animals, since the ASIC1a selective blocker psalmotoxin-1 (PcTx1) reduced the magnitude of LTD induced by application of the group I mGlu receptor agonist (S)-3,5-Dihydroxyphenylglycine (DHPG) or induced by paired-pulse low frequency stimulation (PP-LFS). Conversely, PcTx1 did not affect LTD in P13-18 animals. We also provide evidence that ASIC1a is involved in group I mGlu receptor-induced increase in action potential firing. However, blockade of ASIC1a did not affect DHPG-induced polyphosphoinositide hydrolysis, suggesting the involvement of some other molecular partners in the functional crosstalk between ASIC1a and group I mGlu receptors. Notably, PcTx1 was able to prevent the increase in GluA1 S845 phosphorylation at the post-synaptic membrane induced by group I mGlu receptor activation. These findings suggest a novel function of ASIC1a channels in the regulation of group I mGlu receptor synaptic plasticity and intrinsic excitability.
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Affiliation(s)
- D Mango
- European Brain Research Institute, Rita Levi-Montalcini Foundation, Rome, Italy.
| | - E Braksator
- University of Bristol, Bristol BS8 1TD, United Kingdom
| | | | - S Marcelli
- European Brain Research Institute, Rita Levi-Montalcini Foundation, Rome, Italy; Sapienza University of Rome, Rome, Italy
| | - N B Mercuri
- University of Rome Tor Vergata, Rome, Italy; I.R.C.C.S. Santa Lucia Foundation, Rome, Italy
| | - M Feligioni
- European Brain Research Institute, Rita Levi-Montalcini Foundation, Rome, Italy; Casa Cura Policlinico (CCP), Department of Neurorehabilitation Sciences, Milan, Italy
| | - F Nicoletti
- I.R.C.C.S. Neuromed, Pozzilli, Italy; Sapienza University of Rome, Rome, Italy
| | - Z I Bashir
- University of Bristol, Bristol BS8 1TD, United Kingdom
| | - R Nisticò
- European Brain Research Institute, Rita Levi-Montalcini Foundation, Rome, Italy; University of Rome Tor Vergata, Rome, Italy.
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Neuroprotective and Anti-Apoptotic Effects of CSP-1103 in Primary Cortical Neurons Exposed to Oxygen and Glucose Deprivation. Int J Mol Sci 2017; 18:ijms18010184. [PMID: 28106772 PMCID: PMC5297816 DOI: 10.3390/ijms18010184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/03/2017] [Accepted: 01/12/2017] [Indexed: 01/20/2023] Open
Abstract
CSP-1103 (formerly CHF5074) has been shown to reverse memory impairment and reduce amyloid plaque as well as inflammatory microglia activation in preclinical models of Alzheimer's disease. Moreover, it was found to improve cognition and reduce brain inflammation in patients with mild cognitive impairment. Recent evidence suggests that CSP-1103 acts through a single molecular target, the amyloid precursor protein intracellular domain (AICD), a transcriptional regulator implicated in inflammation and apoptosis. We here tested the possible anti-apoptotic and neuroprotective activity of CSP-1103 in a cell-based model of post-ischemic injury, wherein the primary mouse cortical neurons were exposed to oxygen-glucose deprivation (OGD). When added after OGD, CSP-1103 prevented the apoptosis cascade by reducing cytochrome c release and caspase-3 activation and the secondary necrosis. Additionally, CSP-1103 limited earlier activation of p38 and nuclear factor κB (NF-κB) pathways. These results demonstrate that CSP-1103 is neuroprotective in a model of post-ischemic brain injury and provide further mechanistic insights as regards its ability to reduce apoptosis and potential production of pro-inflammatory cytokines. In conclusion, these findings suggest a potential use of CSP-1103 for the treatment of brain ischemia.
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Radu BM, Banciu A, Banciu DD, Radu M. Acid-Sensing Ion Channels as Potential Pharmacological Targets in Peripheral and Central Nervous System Diseases. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2015; 103:137-67. [PMID: 26920689 DOI: 10.1016/bs.apcsb.2015.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Acid-sensing ion channels (ASICs) are widely expressed in the body and represent good sensors for detecting protons. The pH drop in the nervous system is equivalent to ischemia and acidosis, and ASICs are very good detectors in discriminating slight changes in acidity. ASICs are important pharmacological targets being involved in a variety of pathophysiological processes affecting both the peripheral nervous system (e.g., peripheral pain, diabetic neuropathy) and the central nervous system (e.g., stroke, epilepsy, migraine, anxiety, fear, depression, neurodegenerative diseases, etc.). This review discusses the role played by ASICs in different pathologies and the pharmacological agents acting on ASICs that might represent promising drugs. As the majority of above-mentioned pathologies involve not only neuronal dysfunctions but also microvascular alterations, in the next future, ASICs may be also considered as potential pharmacological targets at the vasculature level. Perspectives and limitations in the use of ASICs antagonists and modulators as pharmaceutical agents are also discussed.
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Affiliation(s)
- Beatrice Mihaela Radu
- Department of Neurological and Movement Sciences, Section of Anatomy and Histology, University of Verona, Verona, Italy; Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Adela Banciu
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Daniel Dumitru Banciu
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Mihai Radu
- Department of Neurological and Movement Sciences, Section of Anatomy and Histology, University of Verona, Verona, Italy; Department of Life and Environmental Physics, 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, Magurele, Romania.
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Wang Y, O’Bryant Z, Wang H, Huang Y. Regulating Factors in Acid-Sensing Ion Channel 1a Function. Neurochem Res 2015; 41:631-45. [DOI: 10.1007/s11064-015-1768-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/04/2015] [Accepted: 11/08/2015] [Indexed: 12/11/2022]
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15
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Retinoic acid ameliorates blood–brain barrier disruption following ischemic stroke in rats. Pharmacol Res 2015; 99:125-36. [DOI: 10.1016/j.phrs.2015.05.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 05/30/2015] [Accepted: 05/31/2015] [Indexed: 01/28/2023]
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Baron A, Lingueglia E. Pharmacology of acid-sensing ion channels – Physiological and therapeutical perspectives. Neuropharmacology 2015; 94:19-35. [DOI: 10.1016/j.neuropharm.2015.01.005] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 12/15/2014] [Accepted: 01/07/2015] [Indexed: 12/29/2022]
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Fleck J, Marafiga JR, Jesse AC, Ribeiro LR, Rambo LM, Mello CF. Montelukast potentiates the anticonvulsant effect of phenobarbital in mice: an isobolographic analysis. Pharmacol Res 2015; 94:34-41. [PMID: 25684626 DOI: 10.1016/j.phrs.2015.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 01/29/2015] [Accepted: 02/04/2015] [Indexed: 11/24/2022]
Abstract
Although leukotrienes have been implicated in seizures, no study has systematically investigated whether the blockade of CysLT1 receptors synergistically increases the anticonvulsant action of classic antiepileptics. In this study, behavioral and electroencephalographic methods, as well as isobolographic analysis, are used to show that the CysLT1 inverse agonist montelukast synergistically increases the anticonvulsant action of phenobarbital against pentylenetetrazole-induced seizures. Moreover, it is shown that LTD4 reverses the effect of montelukast. The experimentally derived ED50mix value for a fixed-ratio combination (1:1 proportion) of montelukast plus phenobarbital was 0.06±0.02 μmol, whereas the additively calculated ED50add value was 0.49±0.03 μmol. The calculated interaction index was 0.12, indicating a synergistic interaction. The association of montelukast significantly decreased the antiseizure ED50 for phenobarbital (0.74 and 0.04 μmol in the absence and presence of montelukast, respectively) and, consequently, phenobarbital-induced sedation at equieffective doses. The demonstration of a strong synergism between montelukast and phenobarbital is particularly relevant because both drugs are already used in the clinics, foreseeing an immediate translational application for epileptic patients who have drug-resistant seizures.
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Affiliation(s)
- Juliana Fleck
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; University Hospital of Santa Maria, Federal University of Santa Maria, Santa Maria, RS, Brazil; Pharmacy Department, Center of Health Sciences, Franciscan University Center, RS, Brazil
| | - Joseane Righes Marafiga
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Ana Cláudia Jesse
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Leandro Rodrigo Ribeiro
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Leonardo Magno Rambo
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Carlos Fernando Mello
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
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