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Huang T, Chen X, He J, Zheng P, Luo Y, Wu A, Yan H, Yu B, Chen D, Huang Z. Eugenol mimics exercise to promote skeletal muscle fiber remodeling and myokine IL-15 expression by activating TRPV1 channel. eLife 2024; 12:RP90724. [PMID: 38913071 PMCID: PMC11196110 DOI: 10.7554/elife.90724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024] Open
Abstract
Metabolic disorders are highly prevalent in modern society. Exercise mimetics are defined as pharmacological compounds that can produce the beneficial effects of fitness. Recently, there has been increased interest in the role of eugenol and transient receptor potential vanilloid 1 (TRPV1) in improving metabolic health. The aim of this study was to investigate whether eugenol acts as an exercise mimetic by activating TRPV1. Here, we showed that eugenol improved endurance capacity, caused the conversion of fast-to-slow muscle fibers, and promoted white fat browning and lipolysis in mice. Mechanistically, eugenol promoted muscle fiber-type transformation by activating TRPV1-mediated CaN signaling pathway. Subsequently, we identified IL-15 as a myokine that is regulated by the CaN/nuclear factor of activated T cells cytoplasmic 1 (NFATc1) signaling pathway. Moreover, we found that TRPV1-mediated CaN/NFATc1 signaling, activated by eugenol, controlled IL-15 levels in C2C12 myotubes. Our results suggest that eugenol may act as an exercise mimetic to improve metabolic health via activating the TRPV1-mediated CaN signaling pathway.
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Affiliation(s)
- Tengteng Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Xiaoling Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Aimin Wu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Hui Yan
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural UniversityChengduChina
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Ye H, Lin Q, Mei Q, Liu Q, Cao S. Study on mechanism of transdermal administration of eugenol for pain treatment by network pharmacology and molecular docking technology. Heliyon 2024; 10:e29722. [PMID: 38681628 PMCID: PMC11046106 DOI: 10.1016/j.heliyon.2024.e29722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 04/12/2024] [Accepted: 04/14/2024] [Indexed: 05/01/2024] Open
Abstract
The objective of this study was to explore the pharmacological mechanism of transdermal administration of eugenol (EUG) for pain treatment. Firstly, network pharmacology techniques were employed to identify the potential targets responsible for the analgesic effect of EUG. Subsequently, molecular docking technology was used to validate interactions between EUG and the crystal structure of the core target protein. Finally, the impact of EUG on the expression and activation of TRPV1 receptors in HaCaT cells was evaluated through in vitro experiments, thus confirming the analysis of network pharmacology. The study suggested that the transdermal administration of EUG for pain treatment might target the TRPV1 receptor. Molecular docking revealed that EUG could spontaneously bind to the TRPV1 receptor with a high binding ability. The analysis of Western blot (WB) and intracellular Ca2+ levels demonstrated that EUG could increase the expression of TRPV1 in HaCaT cells, activating TRPV1 to induce intracellular Ca2+ influx (P < 0.05). These findings suggested that the initial application of EUG would cause a brief stimulation of TRPV1 receptors and upregulation of TRPV1 expression. Upon continued exposure, EUG would act as a TRPV1 agonist, increasing intracellular Ca2+ levels that might be associated with desensitization of pain sensations.
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Affiliation(s)
- Haoting Ye
- Department of Pharmacy, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Qiuxiao Lin
- Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Qinghua Mei
- Department of Pharmacy, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Qiuqiong Liu
- Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Siwei Cao
- Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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Singh Y, Sarkar D, Duari S, G S, Indra Guru PK, M V H, Singh D, Bhardwaj S, Kalia J. Dissecting the contributions of membrane affinity and bivalency of the spider venom protein DkTx to its sustained mode of TRPV1 activation. J Biol Chem 2023; 299:104903. [PMID: 37302551 PMCID: PMC10404664 DOI: 10.1016/j.jbc.2023.104903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/13/2023] Open
Abstract
The spider venom protein, double-knot toxin (DkTx), partitions into the cellular membrane and binds bivalently to the pain-sensing ion channel, TRPV1, triggering long-lasting channel activation. In contrast, its monovalent single knots membrane partition poorly and invoke rapidly reversible TRPV1 activation. To discern the contributions of the bivalency and membrane affinity of DkTx to its sustained mode of action, here, we developed diverse toxin variants including those containing truncated linkers between individual knots, precluding bivalent binding. Additionally, by appending the single-knot domains to the Kv2.1 channel-targeting toxin, SGTx, we created monovalent double-knot proteins that demonstrated higher membrane affinity and more sustained TRPV1 activation than the single-knots. We also produced hyper-membrane affinity-possessing tetra-knot proteins, (DkTx)2 and DkTx-(SGTx)2, that demonstrated longer-lasting TRPV1 activation than DkTx, establishing the central role of the membrane affinity of DkTx in endowing it with its sustained TRPV1 activation properties. These results suggest that high membrane affinity-possessing TRPV1 agonists can potentially serve as long-acting analgesics.
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Affiliation(s)
- Yashaswi Singh
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Pune, Maharashtra, India; Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Debayan Sarkar
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Pune, Maharashtra, India; Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Subhadeep Duari
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Shashaank G
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Pawas Kumar Indra Guru
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Hrishikesh M V
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Dheerendra Singh
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Pune, Maharashtra, India
| | - Sahil Bhardwaj
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India
| | - Jeet Kalia
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Pune, Maharashtra, India; Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India; Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Pune, Maharashtra, India; Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India.
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Khudina OG, Burgart YV, Malkova NA, Shchegolkov EV, Krasnykh OP, Triandafilova GA, Malysheva KO, Solodnikov SY, Dubodel ES, Korolkova YV, Kozlov SA, Borisevich SS, Mozhaitsev ES, Saloutin VI. 5-Alkoxy-1-aryl-3-polyfluoroalkylpyrazoles with Antinociceptive Activity: Partial Agonists of TRPV1 Ion Channels. ChemMedChem 2023; 18:e202300063. [PMID: 37006199 DOI: 10.1002/cmdc.202300063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/04/2023]
Abstract
Chemoselective O-alkylation of 1-aryl-3-polyfluoroalkylpyrazol-5-oles under basic conditions resulted in a series of 5-alkoxypyrazoles (26 derivatives). They showed an acceptable ADME profile (in silico) and can be considered as drug-like. In experiments in vivo (CD-1 mice), it was found that the obtained compounds do not have toxic properties at a dose of more than 150 mg/kg (for most compounds at a dose of >300 mg/kg, and for lead compounds - >600 mg/kg). 22 Compounds from this series demonstrated from moderate to high analgesic effects (28-104 % at 1 h and 37-109 % at 2 h after administration) in vivo in the hot plate test (SD rats, 15 mg/kg, intraperitoneal (ip)). The lead compound was 4-([1-phenyl-3-(trifluoromethyl)pyrazol-5-yl]oxy)butan-1-ol, which not only increased the latent period in the hot plate test by 103 % at both measurement points but also showed a pronounced analgesic effect under conditions of capsaicin-induced nociception (CD-1 mice, 15 mg/kg, ip). According to molecular modeling, all synthesized compounds can interact with the TRPV1 ion channel. This biological target was confirmed in in vitro experiments on Chinese hamster ovary cells expressing rTRPV1. 5-Alkoxypyrazoles were partial agonists of the TRPV1 ion channel in various degree, and the most active was the same pyrazole as in in vivo tests.
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Affiliation(s)
- Olga G Khudina
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Yanina V Burgart
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Natalia A Malkova
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Evgeny V Shchegolkov
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Olga P Krasnykh
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Galina A Triandafilova
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Ksenia O Malysheva
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Sergey Yu Solodnikov
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Elisaveta S Dubodel
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Yuliya V Korolkova
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Sergey A Kozlov
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Sophia S Borisevich
- The Russian Academy of Sciences, Ufa Institute of Chemistry, Octyabrya Av., 71, Ufa, 450078, Russia
| | - Evgenii S Mozhaitsev
- Siberian Branch of the Russian Academy of Sciences, N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Lavrentiev Av., 9, Novosibirsk, 630090, Russia
| | - Victor I Saloutin
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
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5
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Jin F, Wen Y, Lin G, Yu S, Wang C, Ye W, Zhang J. Design, synthesis, and analgesia evaluation of novel Transient Receptor Potential Vanilloid 1 (TRPV1) agonists modified from Cannabidiol (CBD). Bioorg Med Chem 2023; 90:117379. [PMID: 37336082 DOI: 10.1016/j.bmc.2023.117379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/21/2023]
Abstract
Pain-relief is a long-term research hotspot with huge demand in clinical treatment. The analgesics currently used have several side effects, such as being addictive and causing gastrointestinal bleeding. Therefore, new drugs and targets in analgesic field are both desirable. Transient Receptor Potential Vanilloid 1 (TRPV1) plays an essential role in pain perception and regulation, providing a new strategy for the development of antinociceptive agents. Here, a series of novel TRPV1 agonists were designed and synthesized based on Cannabidiol (CBD), a widely used pain-relieving agent with weak agonistic activity on TRPV1. According to the results of systematic in vitro and in vivo biological assays, compound 10f was finally identified as a promising TRPV1 agonist, with higher target affinity, stronger analgesic activity, and weak side effect of hyperthermia. Molecular docking simulations revealed a significant hydrogen bond interaction between 10f and Arg557, an amino acid residue key to the activity of TRPV1 protein. Taken together, compound 10f can be used as a lead compound for further optimization.
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Affiliation(s)
- Fangjie Jin
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yuting Wen
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Guoqiang Lin
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Shaopeng Yu
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Chao Wang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wenbo Ye
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Jiange Zhang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
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Romeo I, Brizzi A, Pessina F, Ambrosio FA, Aiello F, Belardo C, Carullo G, Costa G, De Petrocellis L, Frosini M, Luongo L, Maramai S, Paolino M, Moriello AS, Mugnaini C, Scorzelli F, Maione S, Corelli F, Di Marzo V, Alcaro S, Artese A. In Silico-Guided Rational Drug Design and Synthesis of Novel 4-(Thiophen-2-yl)butanamides as Potent and Selective TRPV1 Agonists. J Med Chem 2023; 66:6994-7015. [PMID: 37192374 DOI: 10.1021/acs.jmedchem.3c00447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We describe an in silico-guided rational drug design and the synthesis of the suggested ligands, aimed at improving the TRPV1-ligand binding properties and the potency of N-(4-hydroxy-3-methoxybenzyl)-4-(thiophen-2-yl) butanamide I, a previously identified TRPV1 agonist. The docking experiments followed by molecular dynamics simulations and thermodynamic analysis led the drug design toward both the introduction of a lipophilic iodine and a flat pyridine/benzene at position 5 of the thiophene nucleus. Most of the synthesized compounds showed high TRPV1 efficacy and potency as well as selectivity. The molecular modeling analysis highlighted crucial hydrophobic interactions between Leu547 and the iodo-thiophene nucleus, as in amide 2a, or between Phe543 and the pyridinyl moiety, as in 3a. In the biological evaluation, both compounds showed protective properties against oxidative stress-induced ROS formation in human keratinocytes. Additionally, while 2a showed neuroprotective effects in both neurons and rat brain slices, 3a exhibited potent antinociceptive effect in vivo..
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Affiliation(s)
- Isabella Romeo
- Dipartimento di Scienze della Salute, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
- Net4Science Academic Spin-Off, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
| | - Antonella Brizzi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Federica Pessina
- Dipartimento di Medicina Molecolare e dello Sviluppo, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Francesca Alessandra Ambrosio
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
| | - Francesca Aiello
- Dipartimento di Farmacia e Scienza della Salute e della Nutrizione, Università della Calabria, Via P. Bucci, 87036 Arcavacata di Rende, Cosenza, Italy
| | - Carmela Belardo
- Dipartimento di Medicina Sperimentale, Divisione di Farmacologia, Università degli Studi della Campania "L. Vanvitelli", |Via Costantinopoli 16, 80138 Napoli, Italy
| | - Gabriele Carullo
- Dipartimento di Scienze della Vita, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Giosuè Costa
- Dipartimento di Scienze della Salute, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
- Net4Science Academic Spin-Off, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
| | - Luciano De Petrocellis
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Napoli, Italy
| | - Maria Frosini
- Dipartimento di Scienze della Vita, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Livio Luongo
- Dipartimento di Medicina Sperimentale, Divisione di Farmacologia, Università degli Studi della Campania "L. Vanvitelli", |Via Costantinopoli 16, 80138 Napoli, Italy
| | - Samuele Maramai
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Marco Paolino
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Aniello Schiano Moriello
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Napoli, Italy
- Epitech Group SpA, Via L. Einaudi 13, 35030 Saccolongo, Padova, Italy
| | - Claudia Mugnaini
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Francesco Scorzelli
- Recipharm (Edmond Pharma), Strada Statale dei Giovi 131, 20037 Paderno Dugnano, Milano, Italy
| | - Sabatino Maione
- Dipartimento di Medicina Sperimentale, Divisione di Farmacologia, Università degli Studi della Campania "L. Vanvitelli", |Via Costantinopoli 16, 80138 Napoli, Italy
| | - Federico Corelli
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Napoli, Italy
- Heart and Lung Research Institute, Department of Medicine, Faculty of Medicine, and Institute of Nutrition and Functional Foods, NUTRISS Center, School of Nutrition, Faculty of Agriculture and Food Science, Université Laval, 2325 Rue de l'Université, Québec, Canada
| | - Stefano Alcaro
- Dipartimento di Scienze della Salute, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
- Net4Science Academic Spin-Off, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
| | - Anna Artese
- Dipartimento di Scienze della Salute, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
- Net4Science Academic Spin-Off, Università degli Studi "Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
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Andrei C, Zanfirescu A, Nițulescu GM, Olaru OT, Negreș S. Natural Active Ingredients and TRPV1 Modulation: Focus on Key Chemical Moieties Involved in Ligand-Target Interaction. PLANTS (BASEL, SWITZERLAND) 2023; 12:339. [PMID: 36679051 PMCID: PMC9860573 DOI: 10.3390/plants12020339] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/06/2023] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
Diseases such as cancer, neurological pathologies and chronic pain represent currently unmet needs. The existing pharmacotherapeutic options available for treating these conditions are limited by lack of efficiency and/or side effects. Transient receptor potential vanilloid 1 ion channel emerged as an attractive therapeutic target for developing new analgesic, anti-cancer and antiepileptic agents. Furthermore, various natural ingredients were shown to have affinity for this receptor. The aim of this narrative review was to summarize the diverse natural scaffolds of TRPV1 modulators based on their agonistic/antagonistic properties and to analyze the structure-activity relationships between the ligands and molecular targets based on the results of the existing molecular docking, mutagenesis and in vitro studies. We present here an exhaustive collection of TRPV1 modulators grouped by relevant chemical features: vanilloids, guaiacols, phenols, alkylbenzenes, monoterpenes, sesquiterpenoids, alkaloids, etc. The information herein is useful for understanding the key structural elements mediating the interaction with TRPV1 and how their structural variation impacts the interaction between the ligand and receptor. We hope this data will contribute to the design of novel effective and safe TRPV1 modulators, to help overcome the lack of effective therapeutic agents against pathologies with high morbidity and mortality.
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Atluri K, Manne S, Nalamothu V, Mantel A, Sharma PK, Babu RJ. Advances in Current Drugs and Formulations for the Management of Atopic Dermatitis. Crit Rev Ther Drug Carrier Syst 2023; 40:1-87. [PMID: 37585309 DOI: 10.1615/critrevtherdrugcarriersyst.2023042979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Atopic dermatitis (AD) is a chronic, relapsing inflammatory skin disease with a complex pathophysiology. Treatment of AD remains challenging owing to the presence of a wide spectrum of clinical phenotypes and limited response to existing therapies. However, recent genetic, immunological, and pathophysiological insights into the disease mechanism resulted in the invention of novel therapeutic drug candidates. This review provides a comprehensive overview of current therapies and assesses various novel drug delivery strategies currently under clinical investigation. Further, this review majorly emphasizes on various topical treatments including emollient therapies, barrier repair agents, topical corticosteroids (TCS), phosphodiesterase 4 (PDE4) inhibitors, calcineurin inhibitors, and Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway inhibitors. It also discusses biological and systemic therapies, upcoming treatments based on ongoing clinical trials. Additionally, this review scrutinized the use of pharmaceutical inactive ingredients in the approved topical dosage forms for AD treatment.
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Affiliation(s)
| | | | | | | | | | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA
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9
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Gao N, Li M, Wang W, Liu Z, Guo Y. A bibliometrics analysis and visualization study of TRPV1 channel. Front Pharmacol 2023; 14:1076921. [PMID: 37025492 PMCID: PMC10070874 DOI: 10.3389/fphar.2023.1076921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 02/28/2023] [Indexed: 04/08/2023] Open
Abstract
Background: At the end of the 1990s, transient receptor potential vanilloid 1 (TRPV1) was first identified and cloned, serving as a key pain and heat sensor in humans. A large body of evidence have revealed its polymodal structure, complex function and wide-spread distribution, the specific mechanism of the ion channel remains unclear. Our goal here is to perform a bibliometric analysis and visualization study to present hotspots and trends in TRPV1 channel. Materials and Methods: TRPV1-related publications from inception to 2022 were retrieved from the Web of Science database. Excel, VOSviewer, and CiteSpace software were utilized for co-authorship, co-citation and co-occurrence analysis. Results: There were 9,113 publications included in the study, the number of publications increased rapidly after 1989, from 7 in 1990 to 373 in 2007, during which the number of citations per publication (CPP) also reached a peak in 2000 (CPP = 106.52). A total of 1,486 journals published TRPV1 articles, mainly belong to Q1 or Q2 divisions; The United States published the most articles (TP = 3,080), followed by Japan (TP = 1,221), China (TP = 1,217), and England (TP = 734); In recent years, the TRPV1-related research direction has been broaden to multiple fields related to inflammation, oxidative stress, and apoptosis; Keyword clustering refined the topic distributions and could be generalized as neuralgia, endogenous cannabinoid system, TRPV1 mediated airway hyperresponsiveness, involvement of apoptosis, TRPV1 antagonists as therapy targets. Conclusion: By conducting an exhaustive bibliographic search, this review refined the topic distributions and generalized as neuralgia, endogenous cannabinoid system, TRPV1 mediated airway hyperresponsiveness, involvement of apoptosis, TRPV1 antagonists as therapy targets. It is currently being clarified how exactly TRPV1 works as an ion channel, and much more in-depth basic research is needed in the future.
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Affiliation(s)
- Ning Gao
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Meng Li
- Department of Gastroenterology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Weiming Wang
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhen Liu
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Zhen Liu, ; Yufeng Guo,
| | - Yufeng Guo
- Department of Acupuncture and Moxibustion, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Zhen Liu, ; Yufeng Guo,
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10
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Caballero J. A new era for the design of TRPV1 antagonists and agonists with the use of structural information and molecular docking of capsaicin-like compounds. J Enzyme Inhib Med Chem 2022; 37:2169-2178. [PMID: 35975286 PMCID: PMC9387342 DOI: 10.1080/14756366.2022.2110089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The design of TRPV1 antagonists and agonists has reached a new era since TRPV1 structures at near-atomic resolution are available. Today, the ligand-binding forms of several classical antagonists and agonists are known; therefore, the specific role of key TRPV1’s residues in binding of ligands can be elucidated. It is possible to place the well-defined pharmacophore of TRPV1 ligands, conformed by head, neck, and tail groups, in the right pocket regions of TRPV1. It will allow a more thorough use of molecular modelling methods to conduct more effective rational drug design protocols. In this work, important points about the interactions between TRPV1 and capsaicin-like compounds are spelled out, based on the known pharmacophore of the ligands and the already available TRPV1 structures. These points must be addressed to generate reliable poses of novel candidates and should be considered during the design of novel TRPV1 antagonists and agonists.
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Affiliation(s)
- Julio Caballero
- Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Talca, Chile
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11
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Luo D, Liu L, Zhang HM, Zhou YD, Zhou MF, Li JX, Yu ZM, Chen R, Liang FX. Relationship between acupuncture and transient receptor potential vanilloid: Current and future directions. Front Mol Neurosci 2022; 15:817738. [PMID: 36407763 PMCID: PMC9668865 DOI: 10.3389/fnmol.2022.817738] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/25/2022] [Indexed: 07/22/2023] Open
Abstract
Acupuncture is a common complementary and alternative therapy around the world, but its mechanism remains still unclear. In the past decade, some studies indicated that transient receptor potential vanilloid (TRPV) channels play a great role in the response of acupuncture stimulation. In this article, we discussed the relationship between acupuncture and TRPV channels. Different from inhibitors and agonists, the regulation of acupuncture on TRPV channels is multi-targeted and biphasic control. Acupuncture stimulation shows significant modulation on TRPV1 and TRPV4 at the autonomic nervous system (ANS) including central and peripheral nervous systems. On the contrary, the abundant expression and functional participation of TRPV1 and TRPV4 were specific to acupuncture stimulation at acupoints. The enhancement or inhibition of TRPV channels at different anatomical levels will affect the therapeutic effect of acupuncture. In conclusion, TRPV channels help to understand the principle of acupuncture stimulation, and acupuncture also provides a potential approach to TRPV-related trials.
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Affiliation(s)
- Dan Luo
- Department of Acupuncture and Moxibustion, Hubei University of Traditional Chinese Medicine, Wuhan, China
- Department of Respiratory, Wuhan No. 1 Hospital, Wuhan, China
| | - Li Liu
- Department of Pathology, Wuhan No. 1 Hospital, Wuhan, China
| | - Hai-ming Zhang
- Department of Acupuncture and Moxibustion, Hubei University of Traditional Chinese Medicine, Wuhan, China
- Department of Oncology, Integrated Traditional Chinese and Western Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu-dian Zhou
- Department of Acupuncture and Moxibustion, Hubei University of Traditional Chinese Medicine, Wuhan, China
| | - Min-feng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jin-xiao Li
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhao-min Yu
- Department of Oncology, Hubei Province Hospital of Integrated Traditional Chinese and Western Medicine, Wuhan, China
| | - Rui Chen
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Feng-xia Liang
- Department of Acupuncture and Moxibustion, Hubei University of Traditional Chinese Medicine, Wuhan, China
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12
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Hwang SM, Jo YY, Cohen CF, Kim YH, Berta T, Park CK. Venom Peptide Toxins Targeting the Outer Pore Region of Transient Receptor Potential Vanilloid 1 in Pain: Implications for Analgesic Drug Development. Int J Mol Sci 2022; 23:ijms23105772. [PMID: 35628583 PMCID: PMC9147560 DOI: 10.3390/ijms23105772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/02/2022] [Accepted: 05/19/2022] [Indexed: 02/04/2023] Open
Abstract
The transient receptor potential vanilloid 1 (TRPV1) ion channel plays an important role in the peripheral nociceptive pathway. TRPV1 is a polymodal receptor that can be activated by multiple types of ligands and painful stimuli, such as noxious heat and protons, and contributes to various acute and chronic pain conditions. Therefore, TRPV1 is emerging as a novel therapeutic target for the treatment of various pain conditions. Notably, various peptides isolated from venomous animals potently and selectively control the activation and inhibition of TRPV1 by binding to its outer pore region. This review will focus on the mechanisms by which venom-derived peptides interact with this portion of TRPV1 to control receptor functions and how these mechanisms can drive the development of new types of analgesics.
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Affiliation(s)
- Sung-Min Hwang
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Korea; (S.-M.H.); (Y.-H.K.)
| | - Youn-Yi Jo
- Gil Medical Center, Department of Anesthesiology and Pain Medicine, Gachon University, Incheon 21565, Korea;
| | - Cinder Faith Cohen
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH 45242, USA;
| | - Yong-Ho Kim
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Korea; (S.-M.H.); (Y.-H.K.)
| | - Temugin Berta
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH 45242, USA;
- Correspondence: (T.B.); (C.-K.P.)
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon 21999, Korea; (S.-M.H.); (Y.-H.K.)
- Correspondence: (T.B.); (C.-K.P.)
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13
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Domene C, Darré L, Oakes V, Gonzalez-Resines S. A Potential Route of Capsaicin to Its Binding Site in the TRPV1 Ion Channel. J Chem Inf Model 2022; 62:2481-2489. [PMID: 35504659 PMCID: PMC9131452 DOI: 10.1021/acs.jcim.1c01441] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Transient receptor potential (TRP) ion channels are important pharmacological targets because of their role in the perception of pain, and so, understanding their chemical regulation is essential for the development of analgesic drugs. Among the currently known TRP channel chemical agonists, capsaicin, the active compound of chili pepper, is probably the most exhaustively studied. The availability of the three-dimensional structure of the vanilloid receptor 1 (TRPV1) has fueled computational studies revealing the molecular details of capsaicin binding modes. Although this is a significant step, a comprehensible binding mechanism or pathway is invaluable for targeting TRP channels in modern pharmacology. In the present work, free-energy and enhanced sampling techniques have been used to explore a possible membrane-mediated pathway for capsaicin to enter the TRPV1 binding pocket where capsaicin accesses the protein starting at the extracellular milieu through the outer leaflet and into its binding site in the protein. The main states visited along this route have been characterized and include (i) a bound state in agreement with the binding mode "head-down, tail-up" and (ii) an alternative state corresponding to a "head-up, tail-down" binding mode. In agreement with previous reports, binding is mediated by both hydrogen bonds and van der Waals interactions, and residue Y511 is crucial for stabilizing the bound state and during the binding process. Together, these results provide a foundation to further understand TRPV channels, and they could be used to guide therapeutic design of selective inhibitors potentially leading to novel avenues for pharmacological applications targeting the TRPV1 channel.
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Affiliation(s)
- Carmen Domene
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK.,Department of Chemistry, University of Bath, 1 South Building, Claverton Down, Bath BA2 7AY, UK.,Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
| | - Leonardo Darré
- Department of Chemistry, King's College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK
| | - Victoria Oakes
- Department of Chemistry, University of Bath, 1 South Building, Claverton Down, Bath BA2 7AY, UK
| | - Saul Gonzalez-Resines
- Department of Chemistry, University of Bath, 1 South Building, Claverton Down, Bath BA2 7AY, UK
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14
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Anders B, Anders M, Kreuzer M, Zinn S, Fricker L, Maier C, Wolters M, Köhm M, Behrens F, Walter C. Sensory testing and topical capsaicin can characterize patients with rheumatoid arthritis. Clin Rheumatol 2022; 41:2351-2360. [PMID: 35499773 PMCID: PMC9059678 DOI: 10.1007/s10067-022-06185-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 11/21/2022]
Abstract
Background and objectives Our study aimed at examining the long-time inflammatory effects of rheumatoid arthritis (RA) as chronic immune-mediated disease on pain sensation and neuropathy development compared to healthy subjects (HS). Methods We used the quantitative sensory testing (QST) protocol of the German Research Network on Neuropathic Pain and Electroencephalography (EEG)–based contact heat evoked potentials (CHEPs) before and after topical capsaicin application. We recruited 16 RA patients in remission or low disease activity state (mean age: 59.38 years [± 10.18]) and 16 healthy subjects (mean age: 56.69 years [± 8.92]). Results The application of capsaicin cream on the thigh provoked a stronger effect in HS for both mechanical and heat pain thresholds (MPT and HPT, resp.), according to the area under the receiver operation characteristic (AUROC) (HS: HPT: 0.8965, MPT: 0.7402; RA: HPT: 0.7012, MPT: 0.6113). We observed contrary effects regarding changes in CHEPs (HS: g*max = − 0.65; RA patients: g*max = 0.72). Conclusion As the overall effect of topical capsaicin application was higher in HS for QST, we suggest the existence of a sensitization of TRPV1 channels in RA patients caused by long-time chronical inflammation, despite a lack of clinical signs of inflammation due to adequate treatment. The effect in CHEPs probably uncovers neuropathic symptoms. The effect of topical capsaicin on HPTs and CHEPs can act as a marker for the extent of sensitization and the development of neuropathic symptoms. Further studies are needed to prove if our proposed method can act as a marker for the success of anti-inflammatory treatment.Key Points • The effect of topical capsaicin may represent the extent of TRPV1 sensitization in rheumatoid arthritis. • The effect of topical capsaicin on the amplitude level of CHEPs can unmask neuropathic symptoms. • The effect of topical capsaicin on CHEPs and HPTs can show the long-term consequences and the treatment success of RA patients in remission. |
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Affiliation(s)
- Bjoern Anders
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany.
| | - Malte Anders
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Matthias Kreuzer
- Department of Anesthesiology and Intensive Care, Rechts Der Isar Hospital, Technical University of Munich School of Medicine, Ismaninger Str. 22, 81675, Munich, Germany
| | - Sebastian Zinn
- Department of Anesthesiology, Intensive-Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt Am Main, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany
| | - Lukas Fricker
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Christoph Maier
- University Hospital of Pediatrics and Adolescent Medicine, Ruhr-University Bochum, Bochum, Germany
| | - Miriam Wolters
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Michaela Köhm
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany.,Department of Rheumatology, Goethe University Frankfurt Am Main, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany
| | - Frank Behrens
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany.,Department of Rheumatology, Goethe University Frankfurt Am Main, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany
| | - Carmen Walter
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
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15
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Gershon D, Negev-Goldstein RH, Abd al Razzaq L, Lev S, Binshtok AM. In vivo optical recordings of ion dynamics in mouse corneal primary nociceptive terminals. STAR Protoc 2022; 3:101224. [PMID: 35284836 PMCID: PMC8904606 DOI: 10.1016/j.xpro.2022.101224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This protocol aims to measure ion dynamics in nociceptive terminal endings in intact mice in vivo. We describe viral injection of GCaMP6s + RFP into trigeminal ganglia (TG) of mice, followed by calcium imaging of corneal nociceptive terminals that express GCaMP6s and RFP. This fast and high-resolution optical recording technique enables studying a nociceptive terminal's functional molecular network in physiological and pathological conditions. This platform can be applied to studying the physiology of terminals of other neurons. For complete details on the use and execution of this protocol, please refer to Goldstein et al. (2019). A protocol for measuring activity of mouse nociceptive terminal endings in vivo Uses fast, high-sensitive optical recording from nociceptive terminals and fibers Permits studying ion dynamics underlying encoding of noxious stimuli
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16
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17
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Long W, Johnson J, Kalyaanamoorthy S, Light P. TRPV1 channels as a newly identified target for vitamin D. Channels (Austin) 2021; 15:360-374. [PMID: 33825665 PMCID: PMC8032246 DOI: 10.1080/19336950.2021.1905248] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 11/23/2022] Open
Abstract
Vitamin D is known to elicit many biological effects in diverse tissue types and is thought to act almost exclusively upon its canonical receptor within the nucleus, leading to gene transcriptional changes and the subsequent cellular response. However, not all the observed effects of vitamin D can be attributed to this sole mechanism, and other cellular targets likely exist but remain to be identified. Our recent discovery that vitamin D is a partial agonist of the Transient Receptor Potential Vanilloid family 1 (TRPV1) channel may provide new insights as to how this important vitamin exerts its biological effects either independently or in addition to the nuclear vitamin D receptor. In this review, we discuss the literature surrounding this apparent discrepancy in vitamin D signaling and compare vitamin D with known TRPV1 ligands with respect to their binding to TRPV1. Furthermore, we provide evidence supporting the notion that this novel vitamin D/TRPV1 axis may explain some of the beneficial actions of this vitamin in disease states where TRPV1 expression and vitamin D deficiency are known to overlap. Finally, we discuss whether vitamin D may also act on other members of the TRP family of ion channels.
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Affiliation(s)
- Wentong Long
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Canada
| | - Janyne Johnson
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Canada
| | | | - Peter Light
- Department of Pharmacology and the Alberta Diabetes Institute, University of Alberta, Edmonton, Canada
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18
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Salem JB, Nkambeu B, Arvanitis DN, Beaudry F. Resiniferatoxin Hampers the Nocifensive Response of Caenorhabditis elegans to Noxious Heat, and Pathway Analysis Revealed that the Wnt Signaling Pathway is Involved. Neurochem Res 2021; 47:622-633. [PMID: 34694534 DOI: 10.1007/s11064-021-03471-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/13/2021] [Accepted: 10/18/2021] [Indexed: 10/20/2022]
Abstract
Resiniferatoxin (RTX) is a metabolite extracted from Euphorbia resinifera. RTX is a potent capsaicin analog with specific biological activities resulting from its agonist activity with the transient receptor potential channel vanilloid subfamily member 1 (TRPV1). RTX has been examined as a pain reliever, and more recently, investigated for its ability to desensitize cardiac sensory fibers expressing TRPV1 to improve chronic heart failure (CHF) outcomes using validated animal models. Caenorhabditis elegans (C. elegans) expresses orthologs of vanilloid receptors activated by capsaicin, producing antinociceptive effects. Thus, we used C. elegans to characterize the antinociceptive properties and performed proteomic profiling to uncover specific signaling networks. After exposure to RTX, wild-type (N2) and mutant C. elegans were placed on petri dishes divided into quadrants for heat stimulation. The thermal avoidance index was used to phenotype each tested C. elegans experimental group. The data revealed for the first time that RTX can hamper the nocifensive response of C. elegans to noxious heat (32 - 35 °C). The effect was reversed 6 h after RTX exposure. Additionally, we identified the RTX target, the C. elegans transient receptor potential channel OCR-3. The proteomics and pathway enrichment analysis results suggest that Wnt signaling is triggered by the agonistic effects of RTX on C. elegans vanilloid receptors.
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Affiliation(s)
- Jennifer Ben Salem
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada.,Centre de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, Montréal, Québec, Canada.,Institut des Maladies Métaboliques et Cardiovasculaires, INSERM UMR1297, Université de Toulouse, Toulouse, France
| | - Bruno Nkambeu
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada.,Centre de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, Montréal, Québec, Canada
| | - Dina N Arvanitis
- Institut des Maladies Métaboliques et Cardiovasculaires, INSERM UMR1297, Université de Toulouse, Toulouse, France
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de Biomédecine Vétérinaire, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada. .,Centre de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, Montréal, Québec, Canada.
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19
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Muñoz-Carrillo JL, Vargas-Barboza JM, Villalobos-Gutiérrez PT, Flores-De La Torre JA, Vazquez-Alcaraz SJ, Gutiérrez-Coronado O. Effect of treatment with resiniferatoxin in an experimental model of pulpal inflammatory in mice. Int Endod J 2021; 54:2099-2112. [PMID: 34375451 DOI: 10.1111/iej.13606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 12/26/2022]
Abstract
AIM To evaluate whether treatment with resiniferatoxin (RTX) is capable of lowering the plasma levels of PGE2 and TNF-α, as well as histopathological parameters in inflammation of pulp tissue in a mouse experimental model. METHODOLOGY Ten groups of six BALB/c mice were formed as follows: healthy group (HC ), healthy group treated with RTX (HRTX ), two groups with pulp inflammation at 14 and 18 hours (PI14 /PI18 ), six groups with pulpal inflammation plus treatment with Ibuprofen (IBU14 /IBU18 ), dexamethasone (DEX14 /DEX18 ) and resiniferatoxin (RTX14 /RTX18 ) at 14 and 18 hours, respectively. Pulpal inflammation was induced through occlusal exposure of the pulp of the maxillary first molar. The plasma levels of PGE2 and TNF-α and the histological parameters of the pulp tissue of the HC and HRTX groups were evaluated at the time of acquiring the animals. In the other groups, the plasma levels of PGE2 and TNF-α and the histopathological parameters were evaluated at 14 and 18 hours after pulp damage. Plasma levels of PGE2 and TNF-α were quantified by ELISA, and the histopathological parameters were evaluated by H/E staining. Statistical significance was determined by one-way analysis of variance (ANOVA) to test for overall differences between group means. RESULTS A significant increase (*p < .05) in plasma levels of PGE2 and TNF-α occurred 14 and 18 hours after pulp damage. In addition, treatment with RTX significantly decreased (*p < .05) the plasma levels of PGE2 and TNF-α at 14 and 18 hours after pulp damage, as well as the infiltrate of inflammatory cells at 18 hours after pulp damage, similarly to treatment with ibuprofen and dexamethasone. CONCLUSION It was possible to detect systemic levels of PGE2 and TNF-α at 14 and 18 hours after pulp damage. Likewise, treatment with RTX was associated with an anti-inflammatory effect similar to treatment with ibuprofen and dexamethasone. These findings place resiniferatoxin as a therapeutic alternative in the treatment of inflammatory diseases in Dentistry.
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Affiliation(s)
- José Luis Muñoz-Carrillo
- Laboratory of Basic Sciences, Faculty of Odontology, School of Biomedical Sciences, Cuauhtémoc University Aguascalientes, Aguascalientes, México
| | - Jazmín Monserrat Vargas-Barboza
- Laboratory of Basic Sciences, Faculty of Odontology, School of Biomedical Sciences, Cuauhtémoc University Aguascalientes, Aguascalientes, México
| | - Paola Trinidad Villalobos-Gutiérrez
- Laboratory of Immunology, Department of Earth and Life Sciences, University Center of Lagos, University of Guadalajara, Lagos de Moreno, Jalisco, México
| | | | | | - Oscar Gutiérrez-Coronado
- Laboratory of Immunology, Department of Earth and Life Sciences, University Center of Lagos, University of Guadalajara, Lagos de Moreno, Jalisco, México
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20
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Muñoz-Carrillo JL, Gutiérrez-Coronado O, Muñoz-Escobedo JJ, Contreras-Cordero JF, Maldonado-Tapia C, Moreno-García MA. Resiniferatoxin promotes adult worm expulsion in Trichinella spiralis-infected rats by Th2 immune response modulation. Parasite Immunol 2021; 43:e12840. [PMID: 33914935 DOI: 10.1111/pim.12840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 04/13/2021] [Accepted: 04/23/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The immune response during T spiralis infection is characterized by an increase in eosinophils and mast cells, as well as Th2 cytokine production, such as interleukin (IL)-4, IL-10 and IL-13, promoting T spiralis expulsion from the host. However, this response damages the host, favouring the parasite survival. In the search for new pharmacological strategies that protect against T spiralis infection, a recent study showed that treatment with resiniferatoxin (RTX) modulates the Th1 cytokines production, reducing muscle parasite burden. OBJECTIVE To evaluate the effect of RTX treatment on the Th2 cytokines production, the number of eosinophils, mast cells and the intestinal expulsion of T spiralis. METHODS Serum levels of IL-4, IL-10 and IL-13 were quantified by ELISA; the number of eosinophils, mast cells and the adult worms of T spiralis in the small intestine was quantified. RESULTS RTX treatment increased serum levels of IL-4, IL-10 and IL-13, and it decreases intestinal eosinophilia, however, favours the mastocytosis, promoting T spiralis intestinal expulsion. CONCLUSIONS These findings suggest that RTX is capable to modulate the Th2 immune response, promoting T spiralis expulsion, which contributes to the defence against T spiralis infection, placing the RTX as a potential immunomodulatory drug.
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Affiliation(s)
- José Luis Muñoz-Carrillo
- Laboratory of Cell Biology and Microbiology, Academic Unit of Biological Sciences, Autonomous University of Zacatecas, Zacatecas, México.,Laboratory of Immunology and Virology, Faculty of Biological Sciences, Autonomous University of Nuevo Leon, San Nicolás de los Garza, México.,Laboratory of Basic Sciences, Faculty of Odontology, School of Biomedical Sciences, Cuauhtémoc University Aguascalientes, Aguascalientes, México
| | - Oscar Gutiérrez-Coronado
- Laboratory of Immunology, Department of Earth and Life Sciences, University Center of Los Lagos, University of Guadalajara, Lagos de Moreno, México
| | | | - Juan Francisco Contreras-Cordero
- Laboratory of Immunology and Virology, Faculty of Biological Sciences, Autonomous University of Nuevo Leon, San Nicolás de los Garza, México
| | - Claudia Maldonado-Tapia
- Laboratory of Cell Biology and Microbiology, Academic Unit of Biological Sciences, Autonomous University of Zacatecas, Zacatecas, México
| | - María Alejandra Moreno-García
- Laboratory of Cell Biology and Microbiology, Academic Unit of Biological Sciences, Autonomous University of Zacatecas, Zacatecas, México
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21
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Takahashi K, Yoshida T, Wakamori M. Mode-selective inhibitory effects of eugenol on the mouse TRPV1 channel. Biochem Biophys Res Commun 2021; 556:156-162. [PMID: 33839411 DOI: 10.1016/j.bbrc.2021.03.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022]
Abstract
The transient receptor potential vanilloid 1 (TRPV1) channel is a polymodal receptor in sensory nerves and involved in pain sensation. TRPV1 has at least three distinct activation modes that are selectively induced by different stimuli capsaicin, noxious heat, and protons. Although many mode-selective TRPV1 antagonists have been developed for their anticipated analgesic effects, there have been few successful reports because of adverse effects due to burn injuries and hyperthermia. Eugenol is a vanilloid that has been used as an analgesic in the dental treatment, and its TRPV1 activation ability has been reported. However, our knowledge about the underlying mechanisms of the antagonistic effects of eugenol on TRPV1 activation induced by three different modes is limited. Here, we show that eugenol dose-dependently inhibited the capsaicin-activated inward currents of mouse TRPV1 expressed in human embryonic kidney 293 (HEK293) cells. Under low pH conditions, low concentrations of eugenol only enhanced the proton-induced TRPV1 currents, whereas high eugenol concentrations initially potentiated but then immediately abrogated TRPV1 currents. Finally, eugenol had no modulatory effects on heat-activated TRPV1 in electrophysiological and Fura-2-based Ca2+ imaging experiments. Our results demonstrate that eugenol is a mode-selective antagonist of TRPV1 and can be evaluated as a lead compound of analgesics targeting TRPV1 without serious side effects.
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Affiliation(s)
- Kaori Takahashi
- Division of Molecular Pharmacology and Cell Biophysics, Department of Disease Management Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, 980-8575, Japan
| | - Takashi Yoshida
- Division of Molecular Pharmacology and Cell Biophysics, Department of Disease Management Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, 980-8575, Japan; Division of Pharmacology, Faculty of Pharmaceutical Science, Teikyo Heisei University, Tokyo, 164-8530, Japan.
| | - Minoru Wakamori
- Division of Molecular Pharmacology and Cell Biophysics, Department of Disease Management Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, 980-8575, Japan
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Computational Modeling to Explain Why 5,5-Diarylpentadienamides are TRPV1 Antagonists. Molecules 2021; 26:molecules26061765. [PMID: 33801115 PMCID: PMC8004144 DOI: 10.3390/molecules26061765] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Several years ago, the crystallographic structures of the transient receptor potential vanilloid 1 (TRPV1) in the presence of agonists and antagonists were reported, providing structural information about its chemical activation and inactivation. TRPV1’s activation increases the transport of calcium and sodium ions, leading to the excitation of sensory neurons and the perception of pain. On the other hand, its antagonistic inactivation has been explored to design analgesic drugs. The interactions between the antagonists 5,5-diarylpentadienamides (DPDAs) and TRPV1 were studied here to explain why they inactivate TRPV1. The present work identified the structural features of TRPV1–DPDA complexes, starting with a consideration of the orientations of the ligands inside the TRPV1 binding site by using molecular docking. After this, a chemometrics analysis was performed (i) to compare the orientations of the antagonists (by using LigRMSD), (ii) to describe the recurrent interactions between the protein residues and ligand groups in the complexes (by using interaction fingerprints), and (iii) to describe the relationship between topological features of the ligands and their differential antagonistic activities (by using a quantitative structure–activity relationship (QSAR) with 2D autocorrelation descriptors). The interactions between the DPDA groups and the residues Y511, S512, T550, R557, and E570 (with a recognized role in the binding of classic ligands), and the occupancy of isoquinoline or 3-hydroxy-3,4-dihydroquinolin-2(1H)-one groups of the DPDAs in the vanilloid pocket of TRPV1 were clearly described. Based on the results, the structural features that explain why DPDAs inactivate TRPV1 were clearly exposed. These features can be considered for the design of novel TRPV1 antagonists.
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Zupin L, Barbi E, Sagredini R, Ottaviani G, Crovella S, Celsi F. In vitro effects of photobiomodulation therapy on 50B11 sensory neurons: evaluation of cell metabolism, oxidative stress, mitochondrial membrane potential (MMP), and capsaicin-induced calcium flow. JOURNAL OF BIOPHOTONICS 2021; 14:e202000347. [PMID: 33128434 DOI: 10.1002/jbio.202000347] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
The analgesic properties of photobiomodulation therapy (PBMT) have been raising increasing interest in the clinical community due to the positive effects observed on patients, nevertheless the mechanistic basis of its action on peripheral sensory neurons remains still elusive. In this study, the effect of near-infrared (NIR) PBMT at 800 and 970 nm of wavelength was investigated on the 50B11 immortalized nociceptive sensory neuronal cell line by evaluating capsaicin-induced calcium flow and different markers correlated to mitochondria, that is, ATP, reactive oxygen species (ROS), and mitochondrial membrane potential (MMP). Calcium peak stimulated by capsaicin, the ligand of TRPV1 channel, was decreased in neurons pre-irradiated with the combination of the two wavelengths. Furthermore, delivering the 800 and 970 nm separately an increment of ATP, as well as MMP hyperpolarization were detected; notably, the 800 nm wavelength also increased ROS and O2- levels. Our findings, obtained on an in vitro model of nociception, show the positive effect of PBMT on two potential photo-targets of NIR light, namely the TRPV1 channel and the mitochondria.
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Affiliation(s)
- Luisa Zupin
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Egidio Barbi
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Raffaella Sagredini
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Giulia Ottaviani
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Sergio Crovella
- Department of Biological and Environmental Sciences, College of Arts and Sciences, University of Qatar, Doha, Qatar
| | - Fulvio Celsi
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
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TRPM3 Channels Play Roles in Heat Hypersensitivity and Spontaneous Pain after Nerve Injury. J Neurosci 2021; 41:2457-2474. [PMID: 33478988 DOI: 10.1523/jneurosci.1551-20.2020] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/11/2020] [Accepted: 11/07/2020] [Indexed: 12/11/2022] Open
Abstract
Transient receptor potential melastatin 3 (TRPM3) is a heat-activated ion channel in primary sensory neurons of the dorsal root ganglia (DRGs). Pharmacological and genetic studies implicated TRPM3 in various pain modalities, but TRPM3 inhibitors were not validated in TRPM3-/- mice. Here we tested two inhibitors of TRPM3 in male and female wild-type and TRPM3-/- mice in nerve injury-induced neuropathic pain. We found that intraperitoneal injection of either isosakuranetin or primidone reduced heat hypersensitivity induced by chronic constriction injury (CCI) of the sciatic nerve in wild-type, but not in TRPM3-/- mice. Primidone was also effective when injected locally in the hindpaw or intrathecally. Consistently, intrathecal injection of the TRPM3 agonist CIM0216 reduced paw withdrawal latency to radiant heat in wild-type, but not in TRPM3-/- mice. Intraperitoneal injection of 2 mg/kg, but not 0.5 mg/kg isosakuranetin, inhibited cold and mechanical hypersensitivity in CCI, both in wild-type and TRPM3-/- mice, indicating a dose-dependent off-target effect. Primidone had no effect on cold sensitivity, and only a marginal effect on mechanical hypersensitivity. Genetic deletion or inhibitors of TRPM3 reduced the increase in the levels of the early genes c-Fos and pERK in the spinal cord and DRGs in CCI mice, suggesting spontaneous activity of the channel. Intraperitoneal isosakuranetin also inhibited spontaneous pain related behavior in CCI in the conditioned place preference assay, and this effect was eliminated in TRPM3-/- mice. Overall, our data indicate a role of TRPM3 in heat hypersensitivity and in spontaneous pain after nerve injury.SIGNIFICANCE STATEMENT Neuropathic pain is a major unsolved medical problem. The heat-activated TRPM3 ion channel is a potential target for novel pain medications, but the pain modalities in which it plays a role are not clear. Here we used a combination of genetic and pharmacological tools to assess the role of this channel in spontaneous pain, heat, cold, and mechanical hypersensitivity in a nerve injury model of neuropathic pain in mice. Our findings indicate a role for TRPM3 in heat hyperalgesia, and spontaneous pain, but not in cold and mechanical hypersensitivity. We also find that not only TRPM3 located in the peripheral nerve termini, but also TRPM3 in the spinal cord or proximal segments of DRG neurons are important for heat hypersensitivity.
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Diarylureas: Repositioning from Antitumor to Antimicrobials or Multi-Target Agents against New Pandemics. Antibiotics (Basel) 2021; 10:antibiotics10010092. [PMID: 33477901 PMCID: PMC7833385 DOI: 10.3390/antibiotics10010092] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/12/2021] [Accepted: 01/18/2021] [Indexed: 12/19/2022] Open
Abstract
Antimicrobials have allowed medical advancements over several decades. However, the continuous emergence of antimicrobial resistance restricts efficacy in treating infectious diseases. In this context, the drug repositioning of already known biological active compounds to antimicrobials could represent a useful strategy. In 2002 and 2003, the SARS-CoV pandemic immobilized the Far East regions. However, the drug discovery attempts to study the virus have stopped after the crisis declined. Today’s COVID-19 pandemic could probably have been avoided if those efforts against SARS-CoV had continued. Recently, a new coronavirus variant was identified in the UK. Because of this, the search for safe and potent antimicrobials and antivirals is urgent. Apart from antiviral treatment for severe cases of COVID-19, many patients with mild disease without pneumonia or moderate disease with pneumonia have received different classes of antibiotics. Diarylureas are tyrosine kinase inhibitors well known in the art as anticancer agents, which might be useful tools for a reposition as antimicrobials. The first to come onto the market as anticancer was sorafenib, followed by some other active molecules. For this interesting class of organic compounds antimicrobial, antiviral, antithrombotic, antimalarial, and anti-inflammatory properties have been reported in the literature. These numerous properties make these compounds interesting for a new possible pandemic considering that, as well as for other viral infections also for CoVID-19, a multitarget therapeutic strategy could be favorable. This review is meant to be an overview on diarylureas, focusing on their biological activities, not dwelling on the already known antitumor activity. Quite a lot of papers present in the literature underline and highlight the importance of these molecules as versatile scaffolds for the development of new and promising antimicrobials and multitarget agents against new pandemic events.
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Zhang WD, Chen XY, Wu C, Lian YN, Wang YJ, Wang JH, Yang F, Liu CH, Li XY. Evodiamine reduced peripheral hypersensitivity on the mouse with nerve injury or inflammation. Mol Pain 2020; 16:1744806920902563. [PMID: 31992128 PMCID: PMC6990609 DOI: 10.1177/1744806920902563] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Management of chronic pain is still hard, and new analgesic drugs are needed. Evodiamine (Evo) and rutaecarpine (Rut) are two major active components of Evodia rutaecarpa, a Chinese traditional medicine that has been used as an analgesic for a long time. However, their effects on peripheral hypersensitivity remain unknown. Similar to capsaicin, the Evo and Rut were docked to the transient receptor potential cation channel subfamily V member 1 (TRPV1) in molecular simulation experiments. Moreover, Evo (10 µM) and Rut (50 µM) activated TRPV1 on human embryonic kidney 293 (HEK293) cells in electrophysiological recording experiments. Behaviorally, the application of Evo and Rut reduced peripheral hypersensitivity in a dose-dependent manner, which was blocked by capsazepine (a selective inhibitor of TRPV1). Furthermore, both Evo and Rut increased time in the open arms of the elevated plus maze on mice with nerve injury. These observations suggested that Evo and Rut reduced peripheral hypersensitivity and anxiety in mice with nerve injury or inflammation via TRPV1.
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Affiliation(s)
- Wen-Dong Zhang
- Department of Physiology, Institute of Neuroscience and Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiao-Ying Chen
- China National Institute of Standardization, Beijing, China
| | - Cheng Wu
- Department of Physiology, Institute of Neuroscience and Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yan-Na Lian
- Department of Physiology, Institute of Neuroscience and Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yong-Jie Wang
- Department of Biophysics, Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jing-Hua Wang
- Department of Physiology, Institute of Neuroscience and Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fan Yang
- Department of Biophysics, Institute of Neuroscience, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chun-Hui Liu
- China National Institute of Standardization, Beijing, China
| | - Xiang-Yao Li
- Department of Physiology, Institute of Neuroscience and Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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27
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Lucchetta M, Pellegrini M. Finding disease modules for cancer and COVID-19 in gene co-expression networks with the Core&Peel method. Sci Rep 2020; 10:17628. [PMID: 33077837 PMCID: PMC7573595 DOI: 10.1038/s41598-020-74705-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/30/2020] [Indexed: 12/21/2022] Open
Abstract
Genes are organized in functional modules (or pathways), thus their action and their dysregulation in diseases may be better understood by the identification of the modules most affected by the disease (aka disease modules, or active subnetworks). We describe how an algorithm based on the Core&Peel method is used to detect disease modules in co-expression networks of genes. We first validate Core&Peel for the general task of functional module detection by comparison with 42 methods participating in the Disease Module Identification DREAM challenge. Next, we use four specific disease test cases (colorectal cancer, prostate cancer, asthma, and rheumatoid arthritis), four state-of-the-art algorithms (ModuleDiscoverer, Degas, KeyPathwayMiner, and ClustEx), and several pathway databases to validate the proposed algorithm. Core&Peel is the only method able to find significant associations of the predicted disease module with known validated relevant pathways for all four diseases. Moreover, for the two cancer datasets, Core&Peel detects further eight relevant pathways not discovered by the other methods used in the comparative analysis. Finally, we apply Core&Peel and other methods to explore the transcriptional response of human cells to SARS-CoV-2 infection, finding supporting evidence for drug repositioning efforts at a pre-clinical level.
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Affiliation(s)
- Marta Lucchetta
- Institute of Informatics and Telematics (IIT), CNR, Pisa, 56124, Italy
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, 53100, Italy
| | - Marco Pellegrini
- Institute of Informatics and Telematics (IIT), CNR, Pisa, 56124, Italy.
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28
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Long W, Fatehi M, Soni S, Panigrahi R, Philippaert K, Yu Y, Kelly R, Boonen B, Barr A, Golec D, Campbell SA, Ondrusova K, Hubert M, Baldwin T, Lemieux MJ, Light PE. Vitamin D is an endogenous partial agonist of the transient receptor potential vanilloid 1 channel. J Physiol 2020; 598:4321-4338. [PMID: 32721035 PMCID: PMC7589233 DOI: 10.1113/jp279961] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/20/2020] [Indexed: 12/30/2022] Open
Abstract
KEY POINTS 25-Hydroxyvitamin D (25OHD) is a partial agonist of TRPV1 whereby 25OHD can weakly activate TRPV1 yet antagonize the stimulatory effects of the full TRPV1 agonists capsaicin and oleoyl dopamine. 25OHD binds to TRPV1 within the same vanilloid binding pocket as capsaicin. 25OHD inhibits the potentiating effects of PKC-mediated TRPV1 activity. 25OHD reduces T-cell activation and trigeminal neuron calcium signalling mediated by TRPV1 activity. These results provide evidence that TRPV1 is a novel receptor for the biological actions of vitamin D in addition to the well-documented effects of vitamin D upon the nuclear vitamin D receptor. The results may have important implications for our current understanding of certain diseases where TRPV1 and vitamin D deficiency have been implicated, such as chronic pain and autoimmune diseases, such as type 1 diabetes. ABSTRACT The capsaicin receptor TRPV1 plays an important role in nociception, inflammation and immunity and its activity is regulated by exogenous and endogenous lipophilic ligands. As vitamin D is lipophilic and involved in similar biological processes as TRPV1, we hypothesized that it directly regulates TRPV1 activity and function. Our calcium imaging and electrophysiological data demonstrate that vitamin D (25-hydroxyvitamin D (25OHD) and 1,25-hydroxyvitamin D (1,25OHD)) can weakly activate TRPV1 at physiologically relevant concentrations (100 nM). Furthermore, both 25OHD and 1,25OHD can inhibit capsaicin-induced TRPV1 activity (IC50 = 34.3 ± 0.2 and 11.5 ± 0.9 nM, respectively), but not pH-induced TRPV1 activity, suggesting that vitamin D interacts with TRPV1 in the same region as the TRPV1 agonist capsaicin. This hypothesis is supported by our in silico TRPV1 structural modelling studies, which place 25OHD in the same binding region as capsaicin. 25OHD also attenuates PKC-dependent TRPV1 potentiation via interactions with a known PKC phospho-acceptor residue in TRPV1. To provide evidence for a physiological role for the interaction of vitamin D with TRPV1, we employed two different cellular models known to express TRPV1: mouse CD4+ T-cells and trigeminal neurons. Our results indicate that 25OHD reduces TRPV1-induced cytokine release from T-cells and capsaicin-induced calcium activity in trigeminal neurons. In summary, we provide evidence that vitamin D is a novel endogenous regulator of TRPV1 channel activity that may play an important physiological role in addition to its known effects through the canonical nuclear vitamin D receptor pathway.
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Affiliation(s)
- Wentong Long
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Mohammad Fatehi
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Shubham Soni
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Rashmi Panigrahi
- BiochemistryFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Koenraad Philippaert
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Laboratory for Ion Channel ResearchDepartment of Cellular and Molecular MedicineVIB Center for Brain and Disease ResearchKU LeuvenLeuvenBelgium
| | - Yi Yu
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Rees Kelly
- Medical Microbiology & ImmunologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Brett Boonen
- Laboratory for Ion Channel ResearchDepartment of Cellular and Molecular MedicineVIB Center for Brain and Disease ResearchKU LeuvenLeuvenBelgium
| | - Amy Barr
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Dominic Golec
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Scott A. Campbell
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Katarina Ondrusova
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Matt Hubert
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Troy Baldwin
- Medical Microbiology & ImmunologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - M. Joanne Lemieux
- BiochemistryFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
| | - Peter E. Light
- Alberta Diabetes InstituteFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
- Departments of PharmacologyFaculty of Medicine & DentistryUniversity of AlbertaEdmontonCanada
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29
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Modulation of TRPV1 channel function by natural products in the treatment of pain. Chem Biol Interact 2020; 330:109178. [DOI: 10.1016/j.cbi.2020.109178] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/22/2020] [Accepted: 06/09/2020] [Indexed: 01/01/2023]
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30
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Quiñonez‐Bastidas GN, Palomino‐Hernández O, López‐Ortíz M, Rocha‐González HI, González‐Anduaga GM, Regla I, Navarrete A. Antiallodynic effect of PhAR-DBH-Me involves cannabinoid and TRPV1 receptors. Pharmacol Res Perspect 2020; 8:e00663. [PMID: 32965798 PMCID: PMC7510332 DOI: 10.1002/prp2.663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/29/2022] Open
Abstract
The antiallodynic effect of PhAR-DBH-Me was evaluated on two models of neuropathic pain, and the potential roles of CB1, CB2, and TRPV1 receptors as molecular targets of PhAR-DBH-Me were studied. Female Wistar rats were submitted to L5/L6 spinal nerve ligation (SNL) or repeated doses of cisplatin (0.1 mg/kg, i.p.) to induce experimental neuropathy. Then, tactile allodynia was determined, and animals were treated with logarithmic doses of PhAR-DBH-Me (3.2-100 mg/kg, i.p.). To evaluate the mechanism of action of PhAR-DBH-Me, in silico studies using crystallized structures of CB1, CB2, and TRPV1 receptors were performed. To corroborate the computational insights, animals were intraperitoneally administrated with antagonists for CB1 (AM-251, 3 mg/kg), CB2 (AM-630, 1 mg/kg), and TRPV1 receptors (capsazepine, 3 mg/kg), 15 min before to PhAR-DBH-Me (100 mg/kg) administration. Vagal stimulation evoked on striated muscle contraction in esophagus, was used to elicited pharmacological response of PhAR-DBH-ME on nervous tissue. Systemic administration of PhAR-DBH-Me reduced the SNL- and cisplatin-induced allodynia. Docking studies suggested that PhAR-DBH-Me acts as an agonist for CB1, CB2, and TRPV1 receptors, with similar affinity to the endogenous ligand anandamide. Moreover antiallodynic effect of PhAR-DBH-Me was partially prevented by administration of AM-251 and AM-630, and completely prevented by capsazepine. Finally, PhAR-DBH-Me decreased the vagally evoked electrical response in esophagus rat. Taken together, results indicate that PhAR-DBH-Me induces an antiallodynic effect through partial activation of CB1 and CB2 receptors, as well as desensitization of TRPV1 receptors. Data also shed light on the novel vanilloid nature of the synthetic compound PhAR-DBH-Me.
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Affiliation(s)
| | - Oscar Palomino‐Hernández
- Computational Biomedicine ‐ Institute for Advanced Simulation (IAS‐5) and Institute of Neuroscience and Medicine (INM‐9)Forschungszentrum JülichJülichGermany
- Department of ChemistryRheinisch‐Westfälische Technische Hochschule AachenAachenGermany
| | - Manuel López‐Ortíz
- Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de México (UNAM)MéxicoDFMéxico
| | - Héctor Isaac Rocha‐González
- Sección de Estudios de Posgrado e InvestigaciónEscuela Superior de MedicinaInstituto Politécnico NacionalMéxicoCiudad de MéxicoMéxico
| | - Gloria Melisa González‐Anduaga
- Facultad de QuímicaDepartamento de FarmaciaUniversidad Nacional Autónoma de MéxicoCiudad UniversitariaCoyoacánCiudad de MéxicoMéxico
| | - Ignacio Regla
- Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de México (UNAM)MéxicoDFMéxico
| | - Andrés Navarrete
- Facultad de QuímicaDepartamento de FarmaciaUniversidad Nacional Autónoma de MéxicoCiudad UniversitariaCoyoacánCiudad de MéxicoMéxico
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31
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Sintsova OV, Palikov VA, Palikova YA, Klimovich AA, Gladkikh IN, Andreev YA, Monastyrnaya MM, Kozlovskaya EP, Dyachenko IA, Kozlov SA, Leychenko EV. Peptide Blocker of Ion Channel TRPV1 Exhibits a Long Analgesic Effect in the Heat Stimulation Model. DOKL BIOCHEM BIOPHYS 2020; 493:215-217. [PMID: 32894469 DOI: 10.1134/s1607672920030096] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/20/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022]
Abstract
The ion channel TRPV1, which is one of the most important integrators of pain and inflammatory stimuli, is considered a promising therapeutic target in the treatment of pain conditions. In this work, we performed a comparative study of the analgesic effect in the "hot plate" test of recombinant analogues of Kunitz-type peptides from the sea anemone Heteractis crispa venom: APHC1-modulator of TRPV1 and HCRG21-a full blocker of TRPV1. As a result of biological tests, it was shown that the full blocker HCRG21, despite the higher value of 50% effective concentration of TRPV1 inhibition, had an equal analgesic ability with the APHC1 upon intramuscular administration and retained it for 13 h of observation. The analgesic effect of APHC1 at a dose of 0.1 mg/kg when administered intramuscularly developed very quickly in 5 min but lasted 3 h. The differences in the pharmacodynamic profile of the peptides are in good agreement with different mechanisms of binding to TRPV1.
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Affiliation(s)
- O V Sintsova
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - V A Palikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino, Moscow oblast, Russia
| | - Y A Palikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino, Moscow oblast, Russia
| | - A A Klimovich
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - I N Gladkikh
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - Y A Andreev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - M M Monastyrnaya
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - E P Kozlovskaya
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - I A Dyachenko
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino, Moscow oblast, Russia
| | - S A Kozlov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - E V Leychenko
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia.
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Ma Y, Luo Q, Fu J, Che Y, Guo F, Mei L, Zhang Q, Li Y, Yang H. Discovery of an Inhibitor for the TREK-1 Channel Targeting an Intermediate Transition State of Channel Gating. J Med Chem 2020; 63:10972-10983. [PMID: 32877186 DOI: 10.1021/acs.jmedchem.0c00842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yuqin Ma
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Qichao Luo
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- Guangdong Engineering Technology Research Center for Big Data Precision Healthcare, Big Data Decision Institute (BDDI), Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Jie Fu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanxin Che
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Fei Guo
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Lianghe Mei
- Suzhou Institute of Drug Innovation, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 108 Yuxin Road, Suzhou, Jiangsu 215123, China
| | - Qiansen Zhang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yang Li
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Huaiyu Yang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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Escelsior A, Sterlini B, Murri MB, Serafini G, Aguglia A, da Silva BP, Corradi A, Valente P, Amore M. Red-hot chili receptors: A systematic review of TRPV1 antagonism in animal models of psychiatric disorders and addiction. Behav Brain Res 2020; 393:112734. [DOI: 10.1016/j.bbr.2020.112734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/19/2020] [Accepted: 05/22/2020] [Indexed: 12/17/2022]
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Khan A, Khan S, Kim YS. Insight into Pain Modulation: Nociceptors Sensitization and Therapeutic Targets. Curr Drug Targets 2020; 20:775-788. [PMID: 30706780 DOI: 10.2174/1389450120666190131114244] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/16/2019] [Accepted: 01/22/2019] [Indexed: 12/21/2022]
Abstract
Pain is a complex multidimensional concept that facilitates the initiation of the signaling cascade in response to any noxious stimuli. Action potential generation in the peripheral nociceptor terminal and its transmission through various types of nociceptors corresponding to mechanical, chemical or thermal stimuli lead to the activation of receptors and further neuronal processing produces the sensation of pain. Numerous types of receptors are activated in pain sensation which vary in their signaling pathway. These signaling pathways can be regarded as a site for modulation of pain by targeting the pain transduction molecules to produce analgesia. On the basis of their anatomic location, transient receptor potential ion channels (TRPV1, TRPV2 and TRPM8), Piezo 2, acid-sensing ion channels (ASICs), purinergic (P2X and P2Y), bradykinin (B1 and B2), α-amino-3-hydroxy-5- methylisoxazole-4-propionate (AMPA), N-methyl-D-aspartate (NMDA), metabotropic glutamate (mGlu), neurokinin 1 (NK1) and calcitonin gene-related peptide (CGRP) receptors are activated during pain sensitization. Various inhibitors of TRPV1, TRPV2, TRPM8, Piezo 2, ASICs, P2X, P2Y, B1, B2, AMPA, NMDA, mGlu, NK1 and CGRP receptors have shown high therapeutic value in experimental models of pain. Similarly, local inhibitory regulation by the activation of opioid, adrenergic, serotonergic and cannabinoid receptors has shown analgesic properties by modulating the central and peripheral perception of painful stimuli. This review mainly focused on various classes of nociceptors involved in pain transduction, transmission and modulation, site of action of the nociceptors in modulating pain transmission pathways and the drugs (both clinical and preclinical data, relevant to targets) alleviating the painful stimuli by exploiting nociceptor-specific channels and receptors.
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Affiliation(s)
- Amna Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Salman Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Yeong Shik Kim
- College of Pharmacy, Seoul National University, Seoul, South Korea
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35
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Amirkhanloo F, Karimi G, Yousefi-Manesh H, Abdollahi A, Roohbakhsh A, Dehpour AR. The protective effect of modafinil on vincristine-induced peripheral neuropathy in rats: A possible role for TRPA1 receptors. Basic Clin Pharmacol Toxicol 2020; 127:405-418. [PMID: 32542990 DOI: 10.1111/bcpt.13454] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 01/05/2023]
Abstract
Vincristine (VCR) induces peripheral neuropathy. We aimed to assess the efficacy of modafinil on VCR-induced neuropathy in rats. Neuropathy was induced by intraperitoneal (i.p.) injections of VCR (0.1 mg/kg). Neuropathic groups received modafinil (5, 25 and 50 mg/kg); gabapentin (20 mg/kg); and a combination of modafinil (5 and 50 mg/kg) and gabapentin (20 mg/kg,). Then, electrophysiological, behavioural, biochemical and pathological evaluations were performed. Latencies of tail-flick and von Frey filament tests, motor nerve conduction velocity (MNCV) and excitation of nerve conduction were decreased. Moreover, the transient receptor potential cation channel ankyrin 1 (TRPA1) level was increased, while TRPV1 and N-Methyl-D-aspartate (NMDA) levels remained unchanged. Tumour necrosis factor-alpha (TNF-α) and interleukin-1beta (IL-1β) levels were markedly elevated. Pre-treatment with modafinil prevented sensorimotor neuropathy by raising latencies, MNCV and excitation, reducing TRPA1, TNF-α and IL-1β levels. Modafinil improved behavioural, electrophysiological and pathological disturbances. The results showed that TRPA1 has a more important role than NMDA and TRPV1, in VCR-induced neuropathic pain. In addition, inflammatory mediators, TNF-α and IL-1β, were involved. Further, the combination of modafinil and gabapentin improved the neuroprotective effect of gabapentin. So, modafinil might be a neuroprotective agent in the prevention of VCR-induced neuropathy.
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Affiliation(s)
- Fatemeh Amirkhanloo
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hasan Yousefi-Manesh
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Abdollahi
- Department of Pathology, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ahmad Reza Dehpour
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, Tehran University of Medical Sciences, Tehran, Iran
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Yin Y, Lee SY. Current View of Ligand and Lipid Recognition by the Menthol Receptor TRPM8. Trends Biochem Sci 2020; 45:806-819. [PMID: 32532587 DOI: 10.1016/j.tibs.2020.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/26/2020] [Accepted: 05/12/2020] [Indexed: 12/29/2022]
Abstract
Transient receptor potential (TRP) melastatin member 8 (TRPM8), which is a calcium-permeable ion channel, functions as the primary molecular sensor of cold and menthol in humans. Recent cryoelectron microscopy (cryo-EM) studies of TRPM8 have shown distinct structural features in its architecture and domain assembly compared with the capsaicin receptor TRP vanilloid member 1 (TRPV1). Moreover, ligand-bound TRPM8 structures have uncovered unforeseen binding sites for both cooling agonists and membrane lipid phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2]. These complex structures unveil the molecular basis of cooling agonist sensing by TRPM8 and the allosteric role of PI(4,5)P2 in agonist binding for TRPM8 activation. Here, we review the recent advances in TRPM8 structural biology and investigate the molecular principles governing the distinguishing role of TRPM8 as the evolutionarily conserved menthol receptor.
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Affiliation(s)
- Ying Yin
- Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710, USA
| | - Seok-Yong Lee
- Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710, USA.
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Benítez-Angeles M, Morales-Lázaro SL, Juárez-González E, Rosenbaum T. TRPV1: Structure, Endogenous Agonists, and Mechanisms. Int J Mol Sci 2020; 21:ijms21103421. [PMID: 32408609 PMCID: PMC7279265 DOI: 10.3390/ijms21103421] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
The Transient Receptor Potential Vanilloid 1 (TRPV1) channel is a polymodal protein with functions widely linked to the generation of pain. Several agonists of exogenous and endogenous nature have been described for this ion channel. Nonetheless, detailed mechanisms and description of binding sites have been resolved only for a few endogenous agonists. This review focuses on summarizing discoveries made in this particular field of study and highlighting the fact that studying the molecular details of activation of the channel by different agonists can shed light on biophysical traits that had not been previously demonstrated.
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Affiliation(s)
| | | | | | - Tamara Rosenbaum
- Correspondence: ; Tel.: +52-555-622-56-24; Fax: +52-555-622-56-07
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Krishnatreyya H, Hazarika H, Saha A, Mandal S, Bora NS, Kishor S, Bhutia YD, Goyary D, Karmakar S, Chattopadhyay P. Amelioration from the ocular irritant Capsaicin: development and assessment of a Capsazepine in situ gel system for ocular delivery. Expert Opin Drug Deliv 2020; 17:863-880. [PMID: 32274951 DOI: 10.1080/17425247.2020.1754396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Defense personnel utilize capsaicin-based ocular sprays as non-lethal agents for law implementation during instances of mob violence. This study involves the capsaicin antagonist Capsazepine and the investigation of whether Capsazepine's antagonistic approach can be favorably utilized for defense utilization to block capsaicin-initiated pain and inflammation via the ocular pathway. RESEARCH DESIGN AND METHODS Ocular capsazepine in situ gels were prepared with polymers Pluronic F-127 and Chitosan; optimized formulation was quantified in ocular tissues chromatographically and by in vivo live ocular imaging; anti-inflammatory efficacy was determined by eye irritation testing, corneal and retinal imaging, ocular prostaglandin estimation, and by viability and proliferation testing using human ocular cell lines, etc. RESULTS A physicochemically stable Capsazepine in situ gel was formulated which showed little ocular irritation, considerable transcorneal permeation; was precisely quantified in ocular tissues by gas chromatography and in vivo live ocular imaging; showed anti-inflammatory properties against capsaicin by eye imaging experiments, prostaglandin declination and showed acceptable cytocompatibility when studied using human ocular cell lines. CONCLUSIONS The fabricated in situ Capsazepine gel system might be promising for ocular delivery as it appears a pharmacologically potent and safe development, suitable for utilization in the ocular clinical therapy, provided there is additional research to substantiate it.
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Affiliation(s)
- Harshita Krishnatreyya
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India.,Pharmaceutical & Fine Chemical Division, Department of Chemical Technology, University of Calcutta , Kolkata, India
| | - Hemanga Hazarika
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Achintya Saha
- Pharmaceutical & Fine Chemical Division, Department of Chemical Technology, University of Calcutta , Kolkata, India
| | - Santa Mandal
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Nilutpal Sharma Bora
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Sumit Kishor
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Yangchen Doma Bhutia
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Danswrang Goyary
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Sanjeev Karmakar
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
| | - Pronobesh Chattopadhyay
- Division of Pharmaceutical Technology, Defence Research Laboratory (DRL), Defence Research and Development Organization (DRDO) , Tezpur, Assam, India
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Characterization of the Antinociceptive Activity from Stevia serrata Cav. Biomedicines 2020; 8:biomedicines8040079. [PMID: 32272558 PMCID: PMC7235832 DOI: 10.3390/biomedicines8040079] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Stevia serrata Cav. (Asteraceae), widely found in Guatemala, is used to treat gastrointestinal problems. The aim of this study was to demonstrate the antinociceptive and anti-inflammatory effects of the essential oil (EO) and the mechanism of action. Methods: EO was tested in chemical (capsaicin- and glutamate-induced licking response) or thermal (hot plate) models of nociception at 10, 30 or 100 mg/kg doses. The mechanism of action was evaluated using two receptor antagonists (naloxone, atropine) and an enzyme inhibitor (L-NAME). The anti-hyperalgesic effect was evaluated using carrageenan-induced nociception and evaluated in the hot plate. Results: All three doses of EO reduced licking response induced by glutamate, and higher doses reduced capsaicin-induced licking. EO also increased area under the curve, similar to the morphine-treated group. The antinociceptive effect induced by EO was reversed by pretreatment of mice with naloxone (1 mg/kg, ip), atropine (1 mg/kg, ip) or L-NAME (3 mg/kg, ip). EO also demonstrated an anti-hyperalgesic effect. The 100 mg/kg dose increased the latency time, even at 1 h after oral administration and this effect has been maintained until the 96th hour, post-administration. Conclusions: Our data suggest that essential oil of S. serrata presents an antinociceptive effect mediated, at least in part, through activation of opioid, cholinergic and nitrergic pathways.
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40
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Damann N, Bahrenberg G, Stockhausen H, Habermann CJ, Lesch B, Frank-Foltyn R, Lee J, Ann J, Christoph T. In vitro characterization of the thermoneutral transient receptor potential vanilloid-1 (TRPV1) inhibitor GRTE16523. Eur J Pharmacol 2020; 871:172934. [PMID: 31954706 DOI: 10.1016/j.ejphar.2020.172934] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/19/2019] [Accepted: 01/13/2020] [Indexed: 01/08/2023]
Abstract
The TRPV1 ion channel is a neuronal sensor that plays an important role in nociception and neuropathic as well as inflammatory pain. In clinical trials, hyperthermia and thermo-hypoaesthesia turned out as major side effects of TRPV1 antagonists, preventing successful development of such molecules as analgesics. In vitro studies demonstrated that the TRPV1 ion channel is a polymodal sensor integrating stimuli from molecular modulators with temperature, pH and transmembrane potential. Temperature dependent gating is suggested to constitute the molecular basis for its role in heat sensation and body temperature regulation. Drug discovery scientists since many years seek to obtain "thermoneutral" TRPV1 inhibitors, blocking the channels sensitivity for painful stimuli while keeping its temperature mode of activation unaffected. Aiming for a screening rational for the identification of thermoneutral TRPV1 antagonists, we broadly characterized the prototypic small molecule TRPV1 inhibitors GRT12360V and GRTE16523. In vitro, GRT12360V demonstrated pan-modality inhibition on human, cynomolgus and rodent TRPV1, whereas GRTE16523 selectively bypassed the channels temperature mode on human and cynomolgus TRPV1 and revealed partial agonism on rodent channels. Strikingly, in vivo, GRT12360V induced hyperthermia in all species tested whereas GRTE16523 proved thermoneutral in cynomolgus monkeys and induced hypothermia in rodents. Hence, working out the different in vitro to in vivo correlations of two compounds, we suggest temperature dependent voltage gating as key parameter when screening for thermoneutral TRPV1 inhibitors. We highlight a species difference of molecular TRPV1 pharmacology between primates and rodents and provide a methodological breakthrough to engineer thermoneutral TRPV1 antagonists with improved therapeutic safety.
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Affiliation(s)
- Nils Damann
- Research & Development, Grünenthal, Zieglerstrasse 6, D-52078 Aachen, Germany.
| | - Gregor Bahrenberg
- Research & Development, Grünenthal, Zieglerstrasse 6, D-52078 Aachen, Germany
| | | | | | - Bernhard Lesch
- Research & Development, Grünenthal, Zieglerstrasse 6, D-52078 Aachen, Germany
| | - Robert Frank-Foltyn
- Research & Development, Grünenthal, Zieglerstrasse 6, D-52078 Aachen, Germany
| | - Jeewoo Lee
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Jihyae Ann
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Thomas Christoph
- Research & Development, Grünenthal, Zieglerstrasse 6, D-52078 Aachen, Germany
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41
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Crosstalk between responsivities to various stimuli in multiresponsive polymers: change in polymer chain and external environment polarity as the key factor. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04576-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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42
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Harb AA, Bustanji YK, Almasri IM, Abdalla SS. Eugenol Reduces LDL Cholesterol and Hepatic Steatosis in Hypercholesterolemic Rats by Modulating TRPV1 Receptor. Sci Rep 2019; 9:14003. [PMID: 31570745 PMCID: PMC6768860 DOI: 10.1038/s41598-019-50352-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/11/2019] [Indexed: 01/09/2023] Open
Abstract
Eugenol, a component of essential oils of medicinal and food plants, has a hypolipidemic effect in experimental animals although its mechanism of action is still unclear. This study aims to explore the mechanism of the hypolipidemic effect of eugenol in rats fed a high cholesterol and fat diet (HCFD). Eugenol significantly reduced total cholesterol (TC), low-density lipoproteins (LDL), atherogenic index (AI) but not high-density lipoproteins (HDL) or triglycerides (TG). Eugenol also decreased steatosis and hepatic inflammation in liver sections, decreased hepatomegaly, and the hepatic marker enzymes alanine aminotransferase (ALT) and alkaline phosphatase (ALP) activity and increased the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) activity in hypercholesterolemic rats. Eugenol did not inhibit hepatic 3-hydroxy-3-methyl-glutaryl-CoA (HMG-CoA) reductase but caused down-regulation of transient receptor potential vanilloid (TRPV1) channels in the liver. Docking simulation using fast, rigid exhaustive docking (FRED) software indicated a tail-up/head-down interaction of eugenol with TRPV1 channel. Data indicate that eugenol does not inhibit HMG-CoA reductase but rather induces its action by interaction with TRPV1 channels.
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Affiliation(s)
- Amani A Harb
- Department of Biological Sciences, School of Science, The University of Jordan, Amman, 11942, Jordan
| | - Yasser K Bustanji
- Department of Biopharmaceuticals and Clinical Pharmacy, School of Pharmacy, The University of Jordan, Amman, 11942, Jordan
- Hamdi Mango Center for Scientific research, The University of Jordan, Amman, 11942, Jordan
| | - Ihab M Almasri
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Gaza, Palestine
| | - Shtaywy S Abdalla
- Department of Biological Sciences, School of Science, The University of Jordan, Amman, 11942, Jordan.
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43
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Schuh CMAP, Benso B, Aguayo S. Potential Novel Strategies for the Treatment of Dental Pulp-Derived Pain: Pharmacological Approaches and Beyond. Front Pharmacol 2019; 10:1068. [PMID: 31620000 PMCID: PMC6759635 DOI: 10.3389/fphar.2019.01068] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 08/22/2019] [Indexed: 12/18/2022] Open
Abstract
The diagnosis and management of pain is an everyday occurrence in dentistry, and its effective control is essential to ensure the wellbeing of patients. Most tooth-associated pain originates from the dental pulp, a highly vascularized and innervated tissue, which is encased within mineralized dentin. It plays a crucial role in the sensing of stimuli from the local environment, such as infections (i.e. dental caries) and traumatic injury, leading to a local inflammatory response and subsequently to an increase in intra-pulp pressure, activating nerve endings. However, thermal, chemical, and mechanical stimuli also have the ability to generate dental pulp pain, which presents mechanisms highly specific to this tissue and which have to be considered in pain management. Traditionally, the management of dental pulp pain has mostly been pharmacological, using non-steroidal anti-inflammatory drugs (NSAIDs) and opioids, or restorative (i.e. removal of dental caries), or a combination of both. Both research areas continuously present novel and creative approaches. This includes the modulation of thermo-sensitive transient receptor potential cation channels (TRP) by newly designed drugs in pharmacological research, as well as the use of novel biomaterials, stem cells, exosomes and physical stimulation to obtain pulp regeneration in regenerative medicine. Therefore, the aim of this review is to present an up-to-date account of causes underlying dental pain, novel treatments involving the control of pain and inflammation and the induction of pulp regeneration, as well as insights in pain in dentistry from the physiological, pharmacological, regenerative and clinical perspectives.
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Affiliation(s)
- Christina M. A. P. Schuh
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
- Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Millennium Nucleus of Ion Channels Associated Diseases (MiNICAD), Valdivia, Chile
| | - Sebastian Aguayo
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
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Coussens NP, Sittampalam GS, Jonson SG, Hall MD, Gorby HE, Tamiz AP, McManus OB, Felder CC, Rasmussen K. The Opioid Crisis and the Future of Addiction and Pain Therapeutics. J Pharmacol Exp Ther 2019; 371:396-408. [PMID: 31481516 DOI: 10.1124/jpet.119.259408] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 08/29/2019] [Indexed: 12/26/2022] Open
Abstract
Opioid misuse and addiction are a public health crisis resulting in debilitation, deaths, and significant social and economic impact. Curbing this crisis requires collaboration among academic, government, and industrial partners toward the development of effective nonaddictive pain medications, interventions for opioid overdose, and addiction treatments. A 2-day meeting, The Opioid Crisis and the Future of Addiction and Pain Therapeutics: Opportunities, Tools, and Technologies Symposium, was held at the National Institutes of Health (NIH) to address these concerns and to chart a collaborative path forward. The meeting was supported by the NIH Helping to End Addiction Long-TermSM (HEAL) Initiative, an aggressive, trans-agency effort to speed scientific solutions to stem the national opioid crisis. The event was unique in bringing together two research disciplines, addiction and pain, in order to create a forum for crosscommunication and collaboration. The output from the symposium will be considered by the HEAL Initiative; this article summarizes the scientific presentations and key takeaways. Improved understanding of the etiology of acute and chronic pain will enable the discovery of novel targets and regulatable pain circuits for safe and effective therapeutics, as well as relevant biomarkers to ensure adequate testing in clinical trials. Applications of improved technologies including reagents, assays, model systems, and validated probe compounds will likely increase the delivery of testable hypotheses and therapeutics to enable better health outcomes for patients. The symposium goals were achieved by increasing interdisciplinary collaboration to accelerate solutions for this pressing public health challenge and provide a framework for focused efforts within the research community. SIGNIFICANCE STATEMENT: This article summarizes key messages and discussions resulting from a 2-day symposium focused on challenges and opportunities in developing addiction- and pain-related medications. Speakers and attendees came from 40 states in the United States and 15 countries, bringing perspectives from academia, industry, government, and healthcare by researchers, clinicians, regulatory experts, and patient advocates.
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Affiliation(s)
- Nathan P Coussens
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - G Sitta Sittampalam
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Samantha G Jonson
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Matthew D Hall
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Heather E Gorby
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Amir P Tamiz
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Owen B McManus
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Christian C Felder
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
| | - Kurt Rasmussen
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, Maryland (N.P.C., G.S.S., S.G.J., M.D.H.); Orvos Communications, LLC (H.E.G.); National Institute of Neurologic Disorders and Stroke (A.P.T.) and National Institute on Drug Abuse (K.R.), National Institutes of Health, Bethesda, Maryland; Q-State Biosciences, Cambridge, Massachusetts (O.B.M.); and VP Discovery Research, Karuna Therapeutics, Boston, Massachusetts (C.C.F.)
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Multifunctional TRPV1 Ion Channels in Physiology and Pathology with Focus on the Brain, Vasculature, and Some Visceral Systems. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5806321. [PMID: 31263706 PMCID: PMC6556840 DOI: 10.1155/2019/5806321] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/15/2019] [Accepted: 04/28/2019] [Indexed: 02/06/2023]
Abstract
TRPV1 has been originally cloned as the heat and capsaicin receptor implicated in acute pain signalling, while further research has shifted the focus to its importance in chronic pain caused by inflammation and associated with this TRPV1 sensitization. However, accumulating evidence suggests that, apart from pain signalling, TRPV1 subserves many other unrelated to nociception functions in the nervous system. In the brain, TRPV1 can modulate synaptic transmission via both pre- and postsynaptic mechanisms and there is a functional crosstalk between GABA receptors and TRPV1. Other fundamental processes include TRPV1 role in plasticity, microglia-to-neuron communication, and brain development. Moreover, TRPV1 is widely expressed in the peripheral tissues, including the vasculature, gastrointestinal tract, urinary bladder, epithelial cells, and the cells of the immune system. TRPV1 can be activated by a large array of physical (heat, mechanical stimuli) and chemical factors (e.g., protons, capsaicin, resiniferatoxin, and endogenous ligands, such as endovanilloids). This causes two general cell effects, membrane depolarization and calcium influx, thus triggering depending on the cell-type diverse functional responses ranging from neuronal excitation to secretion and smooth muscle contraction. Here, we review recent research on the diverse TRPV1 functions with focus on the brain, vasculature, and some visceral systems as the basis of our better understanding of TRPV1 role in different human disorders.
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Basso L, Aboushousha R, Fan CY, Iftinca M, Melo H, Flynn R, Agosti F, Hollenberg MD, Thompson R, Bourinet E, Trang T, Altier C. TRPV1 promotes opioid analgesia during inflammation. Sci Signal 2019; 12:12/575/eaav0711. [PMID: 30940767 DOI: 10.1126/scisignal.aav0711] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pain and inflammation are inherently linked responses to injury, infection, or chronic diseases. Given that acute inflammation in humans or mice enhances the analgesic properties of opioids, there is much interest in determining the inflammatory transducers that prime opioid receptor signaling in primary afferent nociceptors. Here, we found that activation of the transient receptor potential vanilloid type 1 (TRPV1) channel stimulated a mitogen-activated protein kinase (MAPK) signaling pathway that was accompanied by the shuttling of the scaffold protein β-arrestin2 to the nucleus. The nuclear translocation of β-arrestin2 in turn prevented its recruitment to the μ-opioid receptor (MOR), the subsequent internalization of agonist-bound MOR, and the suppression of MOR activity that occurs upon receptor desensitization. Using the complete Freund's adjuvant (CFA) inflammatory pain model to examine the role of TRPV1 in regulating endogenous opioid analgesia in mice, we found that naloxone methiodide (Nal-M), a peripherally restricted, nonselective, and competitive opioid receptor antagonist, slowed the recovery from CFA-induced hypersensitivity in wild-type, but not TRPV1-deficient, mice. Furthermore, we showed that inflammation prolonged morphine-induced antinociception in a mouse model of opioid receptor desensitization, a process that depended on TRPV1. Together, our data reveal a TRPV1-mediated signaling pathway that serves as an endogenous pain-resolution mechanism by promoting the nuclear translocation of β-arrestin2 to minimize MOR desensitization. This previously uncharacterized mechanism may underlie the peripheral opioid control of inflammatory pain. Dysregulation of the TRPV1-β-arrestin2 axis may thus contribute to the transition from acute to chronic pain.
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Affiliation(s)
- Lilian Basso
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Reem Aboushousha
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Churmy Yong Fan
- Hotchkiss Brain Institute, Cumming School of Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Mircea Iftinca
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Helvira Melo
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Robyn Flynn
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Francina Agosti
- Institute for Functional Genomics, CNRS UMR5203, INSERM U1191, University of Montpellier, LABEX ICST, Montpellier, France
| | - Morley D Hollenberg
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Roger Thompson
- Hotchkiss Brain Institute, Cumming School of Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Emmanuel Bourinet
- Institute for Functional Genomics, CNRS UMR5203, INSERM U1191, University of Montpellier, LABEX ICST, Montpellier, France
| | - Tuan Trang
- Hotchkiss Brain Institute, Cumming School of Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada
| | - Christophe Altier
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N4N1, Canada.
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Maatuf Y, Geron M, Priel A. The Role of Toxins in the Pursuit for Novel Analgesics. Toxins (Basel) 2019; 11:toxins11020131. [PMID: 30813430 PMCID: PMC6409898 DOI: 10.3390/toxins11020131] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/17/2019] [Accepted: 02/20/2019] [Indexed: 12/19/2022] Open
Abstract
Chronic pain is a major medical issue which reduces the quality of life of millions and inflicts a significant burden on health authorities worldwide. Currently, management of chronic pain includes first-line pharmacological therapies that are inadequately effective, as in just a portion of patients pain relief is obtained. Furthermore, most analgesics in use produce severe or intolerable adverse effects that impose dose restrictions and reduce compliance. As the majority of analgesic agents act on the central nervous system (CNS), it is possible that blocking pain at its source by targeting nociceptors would prove more efficient with minimal CNS-related side effects. The development of such analgesics requires the identification of appropriate molecular targets and thorough understanding of their structural and functional features. To this end, plant and animal toxins can be employed as they affect ion channels with high potency and selectivity. Moreover, elucidation of the toxin-bound ion channel structure could generate pharmacophores for rational drug design while favorable safety and analgesic profiles could highlight toxins as leads or even as valuable therapeutic compounds themselves. Here, we discuss the use of plant and animal toxins in the characterization of peripherally expressed ion channels which are implicated in pain.
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Affiliation(s)
- Yossi Maatuf
- The Institute for Drug Research (IDR), School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel.
| | - Matan Geron
- The Institute for Drug Research (IDR), School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel.
| | - Avi Priel
- The Institute for Drug Research (IDR), School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel.
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Purification of Functional Human TRP Channels Recombinantly Produced in Yeast. Cells 2019; 8:cells8020148. [PMID: 30754715 PMCID: PMC6406451 DOI: 10.3390/cells8020148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 01/27/2019] [Accepted: 02/03/2019] [Indexed: 01/16/2023] Open
Abstract
(1) Background: Human transient receptor potential (TRP) channels constitute a large family of ion-conducting membrane proteins that allow the sensation of environmental cues. As the dysfunction of TRP channels contributes to the pathogenesis of many widespread diseases, including cardiac disorders, these proteins also represent important pharmacological targets. TRP channels are typically produced using expensive and laborious mammalian or insect cell-based systems. (2) Methods: We demonstrate an alternative platform exploiting the yeast Saccharomyces cerevisiae capable of delivering high yields of functional human TRP channels. We produce 11 full-length human TRP members originating from four different subfamilies, purify a selected subset of these to a high homogeneity and confirm retained functionality using TRPM8 as a model target. (3) Results: Our findings demonstrate the potential of the described production system for future functional, structural and pharmacological studies of human TRP channels.
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Modulators of Transient Receptor Potential (TRP) Channels as Therapeutic Options in Lung Disease. Pharmaceuticals (Basel) 2019; 12:ph12010023. [PMID: 30717260 PMCID: PMC6469169 DOI: 10.3390/ph12010023] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/25/2022] Open
Abstract
The lungs are essential for gas exchange and serve as the gateways of our body to the external environment. They are easily accessible for drugs from both sides, the airways and the vasculature. Recent literature provides evidence for a role of Transient Receptor Potential (TRP) channels as chemosensors and essential members of signal transduction cascades in stress-induced cellular responses. This review will focus on TRP channels (TRPA1, TRPC6, TRPV1, and TRPV4), predominantly expressed in non-neuronal lung tissues and their involvement in pathways associated with diseases like asthma, cystic fibrosis, chronic obstructive pulmonary disease (COPD), lung fibrosis, and edema formation. Recently identified specific modulators of these channels and their potential as new therapeutic options as well as strategies for a causal treatment based on the mechanistic understanding of molecular events will also be evaluated.
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Structures of TRPV2 in distinct conformations provide insight into role of the pore turret. Nat Struct Mol Biol 2018; 26:40-49. [PMID: 30598551 PMCID: PMC6458597 DOI: 10.1038/s41594-018-0168-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 11/14/2018] [Indexed: 11/26/2022]
Abstract
Cation channels of the TRP family serve important physiological roles by opening in response to diverse intra-and extra-cellular stimuli which regulate their lower or upper gates. Despite extensive studies, the mechanism coupling these gates has remained obscure. Previous structures have failed to resolve extracellular loops, known in the TRPV subfamily as “pore turrets,” which are proximal to the upper gates. We establish the importance of the pore turret through activity assays and by solving structures of rat TRPV2 both with and without an intact turret at resolutions of 4.0 Å and 3.6 Å respectively. These structures resolve the full-length pore turret and reveal fully open and partially open states of TRPV2, both with unoccupied vanilloid pockets. Our results suggest a mechanism by which physiological signals, such as lipid binding, can regulate the lower gate and couple to the upper gate through a pore turret-facilitated mechanism.
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