1
|
Hashimoto M, Takahashi K, Unno T, Ohta T. Linalyl acetate exerts analgesic effects by inhibiting nociceptive TRPA1 in mice. Biomed Res 2024; 45:125-133. [PMID: 38839355 DOI: 10.2220/biomedres.45.125] [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: 06/07/2024]
Abstract
Clary sage essential oil (CSEO) is utilized in perfumery, aromatherapy, and skincare. Linalyl acetate (LA), a primary component of CSEO, possesses sedative, anxiolytic, and analgesic properties. However, the mechanism of its analgesic action is not clearly understood. Transient receptor potential ankyrin 1 (TRPA1) channel, a non-selective cation channel, is mainly expressed in sensory neurons and serves as a sensor of various irritants. In this study, we investigated the effects of LA on TRPA1 channel using heterologous expression system and isolated sensory neurons. To detect channel activity, we employed Ca2+ imaging and the whole-cell patch-clamp technique. The analgesic action of LA was measured in a pain-related behavioral mouse model. In cells that heterologously expressed TRPA1, LA diminished [Ca2+]i and current responses to allylisothiocyanate (AITC) and carvacrol: exogenous TRPA1 agonists, and the inhibitory effects were more pronounced for the former than for the latter. Moreover, LA suppressed [Ca2+] i and current responses to PGJ2: an endogenous TRPA1 agonist. Similar inhibitory actions were observed in native TRPA1 channels expressed in mouse sensory neurons. Furthermore, LA diminished PGJ2-induced nociceptive behaviors in mice. These findings suggest that analgesic effects of LA exert through inhibition of nociceptive TRPA1, making it a potential candidate for novel analgesic development.
Collapse
Affiliation(s)
- Miho Hashimoto
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Sciences, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Sciences, Tottori University, Tottori, Japan
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Toshihiro Unno
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Toshio Ohta
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Sciences, Tottori University, Tottori, Japan
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| |
Collapse
|
2
|
Bamps D, Blockeel AJ, Dreesen E, Marynissen H, Laenen J, Van Hecken A, Wilke A, Shahabi S, Johnson KW, Collins EC, Broad LM, Phillips KG, de Hoon J. TRPA1 Antagonist LY3526318 Inhibits the Cinnamaldehyde-Evoked Dermal Blood Flow Increase: Translational Proof of Pharmacology. Clin Pharmacol Ther 2023; 114:1093-1103. [PMID: 37562824 DOI: 10.1002/cpt.3024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023]
Abstract
Transient receptor potential Ankyrin 1 (TRPA1) is an ion channel expressed by sensory neurons, where it mediates pain signaling. Consequently, it has emerged as a promising target for novel analgesics, yet, to date, no TRPA1 antagonists have been approved for clinical use. In the present translational study, we utilized dermal blood flow changes evoked by TRPA1 agonist cinnamaldehyde as a target engagement biomarker to investigate the in vivo pharmacology of LY3526318, a novel TRPA1 antagonist. In rats, LY3526318 (1, 3, and 10 mg/kg, p.o.) dose-dependently reduced the cutaneous vasodilation typically observed following topical application of 10% v/v cinnamaldehyde. The inhibition was significant at the site of cinnamaldehyde application and also when including an adjacent area of skin. Similarly, in a cohort of 16 healthy human volunteers, LY3526318 administration (10, 30, and 100 mg, p.o.) dose-dependently reduced the elevated blood flow surrounding the site of 10% v/v cinnamaldehyde application, with a trend toward inhibition at the site of application. Comparisons between both species reveal that the effects of LY3526318 on the cinnamaldehyde-induced dermal blood flow are greater in rats relative to humans, even when adjusting for cross-species differences in potency of the compound at TRPA1. Exposure-response relationships suggest that a greater magnitude response may be observed in humans if higher antagonist concentrations could be achieved. Taken together, these results demonstrate that cinnamaldehyde-evoked changes in dermal blood flow can be utilized as a target engagement biomarker for TRPA1 activity and that LY3526318 antagonizes the ion channel both in rats and humans.
Collapse
Affiliation(s)
- Dorien Bamps
- Department of Pharmaceutical and Pharmacological Sciences, Center for Clinical Pharmacology, KU Leuven, Leuven, Belgium
| | | | - Erwin Dreesen
- Clinical Pharmacology and Pharmacotherapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Heleen Marynissen
- Department of Pharmaceutical and Pharmacological Sciences, Center for Clinical Pharmacology, KU Leuven, Leuven, Belgium
| | - Jolien Laenen
- Department of Pharmaceutical and Pharmacological Sciences, Center for Clinical Pharmacology, KU Leuven, Leuven, Belgium
| | - Anne Van Hecken
- Department of Pharmaceutical and Pharmacological Sciences, Center for Clinical Pharmacology, KU Leuven, Leuven, Belgium
| | - August Wilke
- Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana, USA
| | | | - Kirk W Johnson
- Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana, USA
| | | | - Lisa M Broad
- Eli Lilly and Company, Erl Wood Manor, Windlesham, UK
| | - Keith G Phillips
- Eli Lilly and Company, Neuroscience Next Generation Therapeutics, Lilly Innovation Center, Cambridge, Massachusetts, USA
| | - Jan de Hoon
- Department of Pharmaceutical and Pharmacological Sciences, Center for Clinical Pharmacology, KU Leuven, Leuven, Belgium
| |
Collapse
|
3
|
Frederico MJS, Cipriani A, Heim JBA, Mendes AKB, Aragón M, Gaspar JM, De Alencar NMN, Silva FRMB. Electrophilic Agonists Modulate the Transient Receptor Potential Ankyrin-1 Channels Mediated by Insulin and Glucagon-like Peptide-1 Secretion for Glucose Homeostasis. Pharmaceuticals (Basel) 2023; 16:1167. [PMID: 37631083 PMCID: PMC10458466 DOI: 10.3390/ph16081167] [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: 07/06/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
This pre-clinical study investigated the transient receptor potential ankyrin-1 (TRPA1) channels on modulating targets for glucose homeostasis using agonists: the electrophilic agonists, cinnamaldehyde (CIN) and allyl isothiocyanate (AITC), and the non-electrophilic agonist, carvacrol (CRV). A glucose tolerance test was performed on rats. CIN and AITC (5, 10 and 20 mg/kg) or CRV (25, 100, 300, and 600 mg/kg) were administered intraperitoneally (i.p.), and glycemia was measured. In the intestine, Glucagon-like peptide-1 (GLP-1) and disaccharidase activity were evaluated (in vivo and in vitro, respectively). Furthermore, in vivo and in vitro insulin secretion was determined. Islets were used to measure insulin secretion and calcium influx. CIN and AITC improved glucose tolerance and increased insulin secretion in vivo and in vitro. CRV was unable to reduce glycemia. Electrophilic agonists, CIN and AITC, inhibited disaccharidases and acted as secretagogues in the intestine by inducing GLP-1 release in vivo and in vitro and contributed to insulin secretion and glycemia. The effect of CIN on calcium influx in pancreatic islets (insulin secretion) involves voltage-dependent calcium channels and calcium from stores. TRPA1 triggers calcium influx and potentiates intracellular calcium release to induce insulin secretion, suggesting that electrophilic agonists mediate this signaling transduction for the control of glycemia.
Collapse
Affiliation(s)
- Marisa Jadna Silva Frederico
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
- Laboratory of Biochemistry and Pharmacology, Departament of Pharmacology and Physiology, Drug Research and Development Center (DRDC), Medical School, Federal University of Ceará, Rua Coronel Nunes de Melo, Fortaleza 60430-275, CE, Brazil;
| | - Andreza Cipriani
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
| | - Jocelyn Brice Alexandre Heim
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
| | - Ana Karla Bittencourt Mendes
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
| | - Marcela Aragón
- Departament of Pharmacy, Science School, National University of Colombia, Bogotá 11011, Colombia;
| | - Joana Margarida Gaspar
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
| | - Nylane Maria Nunes De Alencar
- Laboratory of Biochemistry and Pharmacology, Departament of Pharmacology and Physiology, Drug Research and Development Center (DRDC), Medical School, Federal University of Ceará, Rua Coronel Nunes de Melo, Fortaleza 60430-275, CE, Brazil;
| | - Fátima Regina Mena Barreto Silva
- Laboratory of Hormones & Signal Transduction, Departament of Biochemistry, Center of Biological Sciences, Campus Trindade, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil; (A.C.); (J.B.A.H.); (A.K.B.M.); (J.M.G.)
| |
Collapse
|
4
|
Stinson RJ, Morice AH, Sadofsky LR. Modulation of transient receptor potential (TRP) channels by plant derived substances used in over-the-counter cough and cold remedies. Respir Res 2023; 24:45. [PMID: 36755306 PMCID: PMC9907891 DOI: 10.1186/s12931-023-02347-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 01/27/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Upper respiratory tract infections (URTIs) impact all age groups and have a significant economic and social burden on society, worldwide. Most URTIs are mild and self-limiting, but due to the wide range of possible causative agents, including Rhinovirus (hRV), Adenovirus, Respiratory Syncytial Virus (RSV), Coronavirus and Influenza, there is no single and effective treatment. Over-the-counter (OTC) remedies, including traditional medicines and those containing plant derived substances, help to alleviate symptoms including inflammation, pain, fever and cough. PURPOSE This systematic review focuses on the role of the major plant derived substances in several OTC remedies used to treat cold symptoms, with a particular focus on the transient receptor potential (TRP) channels involved in pain and cough. METHODS Literature searches were done using Pubmed and Web of Science, with no date limitations, using the principles of the PRISMA statement. The search terms used were 'TRP channel AND plant compound', 'cough AND plant compound', 'cough AND TRP channels AND plant compound', 'cough AND P2X3 AND plant compound' and 'P2X3 AND plant compound' where plant compound represents menthol or camphor or eucalyptus or turpentine or thymol. RESULTS The literature reviewed showed that menthol activates TRPM8 and may inhibit respiratory reflexes reducing irritation and cough. Menthol has a bimodal action on TRPA1, but inhibition may have an analgesic effect. Eucalyptus also activates TRPM8 and inhibits TRPA1 whilst down regulating P2X3, aiding in the reduction of cough, pain and airway irritation. Camphor inhibits TRPA1 and the activation of TRPM8 may add to the effects of menthol. Activation of TRPV1 by camphor, may also have an analgesic effect. CONCLUSIONS The literature suggests that these plant derived substances have multifaceted actions and can interact with the TRP 'cough' receptors. The plant derived substances used in cough and cold medicines have the potential to target multiple symptoms experienced during a cold.
Collapse
Affiliation(s)
- Rebecca J. Stinson
- grid.9481.40000 0004 0412 8669Centre for Biomedicine, Hull York Medical School, The University of Hull, Cottingham Road, Hull, HU6 7RX UK
| | - Alyn H. Morice
- grid.413631.20000 0000 9468 0801Clinical Sciences Centre, Hull York Medical School, Castle Hill Hospital, Cottingham, Hull, HU16 5JQ UK
| | - Laura R. Sadofsky
- grid.9481.40000 0004 0412 8669Centre for Biomedicine, Hull York Medical School, The University of Hull, Cottingham Road, Hull, HU6 7RX UK
| |
Collapse
|
5
|
Alves AWDS, Sousa BL, Moura LFWG, Rebouças EDL, Coutinho MR, Silva AW, Chaves RP, Carneiro RF, Bezerra EHS, Guedes MIF, Florean EOPT, Nagano CS, Sampaio AH, Rocha BAM. Codium isthmocladum lectin 1 (CiL-1): Interaction with N-glycans explains antinociceptive and anti-inflammatory activities in adult zebrafish (Danio rerio). Int J Biol Macromol 2022; 208:1082-1089. [PMID: 35378162 DOI: 10.1016/j.ijbiomac.2022.03.209] [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: 12/15/2021] [Revised: 03/20/2022] [Accepted: 03/30/2022] [Indexed: 12/30/2022]
Abstract
Inflammation and oxidative stress are processes associated with different human diseases. They are treated using drugs that have several side effects. Seaweed are sources of potentially relevant natural compounds for use as treatment of these disorders. Lectins are able to reversibly interact with complex carbohydrates and modulate cell membrane glycosylated receptors through this interaction. This study aimed to determine the antinociceptive and anti-inflammatory potential of CiL-1 in adult zebrafish by modulation of TRPA1 through lectin-glycan binding. Possible neuromodulation by TRPA1 channel was also evaluated by camphor pretreatment. CiL-1 was efficacious at all tested doses, revealing anti-nociceptive and anti-inflammatory effects in adult zebrafish. This galactose-binding lectin was also able to reduce the content of ROS in brain and liver. In silico analyses showed CiL-1 interactions with both ligands tested. LacNac2 presents the most favorable binding energy with the protein. The interaction occurs at 4 subsites as an extended conformation at the site. LacNac2-Sia had a less favorable curved-shape interaction energy. Based on the predictions made for the oligosaccharides, a tetra-antenate putative glycan was schematically constructed, illustrating an interaction between TRPA1 N-glycan and CiL-1. This binding seems to be related to CiL-1 anti-inflammatory activity as result of receptor modulation.
Collapse
Affiliation(s)
- Antônio Willame da Silva Alves
- Laboratório de Biocristalografia - LABIC, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici s/n, bloco 907, Av. Mister Hull, Fortaleza, Ceará 60440-970, Brazil
| | - Bruno Lopes Sousa
- Faculdade de Filosofia Dom Aureliano Matos, Universidade Estadual do Ceará, Av. Dom Aureliano Matos, 2060, Limoeiro do Norte, Ceará 62930-000, Brazil
| | - Luiz Francisco Wemmenson Gonçalves Moura
- Laboratório de Biotecnologia e Biologia Molecular - LBBM, Centro de Ciências da Saúde, Universidade Estadual do Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | - Emanuela de Lima Rebouças
- Laboratório de Biotecnologia e Biologia Molecular - LBBM, Centro de Ciências da Saúde, Universidade Estadual do Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | - Marnielle Rodrigues Coutinho
- Laboratório de Biotecnologia e Biologia Molecular - LBBM, Centro de Ciências da Saúde, Universidade Estadual do Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | - Antônio Wlisses Silva
- Laboratório de Biotecnologia e Biologia Molecular - LBBM, Centro de Ciências da Saúde, Universidade Estadual do Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | - Renata Pinheiro Chaves
- Laboratório de Biotecnologia Marinha - BioMar-Lab, Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Rômulo Farias Carneiro
- Laboratório de Biotecnologia Marinha - BioMar-Lab, Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Eduardo Henrique Salviano Bezerra
- Laboratório de Biocristalografia - LABIC, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici s/n, bloco 907, Av. Mister Hull, Fortaleza, Ceará 60440-970, Brazil; Laboratório Nacional de Biociências - LNBio, Centro Nacional de Pesquisa em Energia e Materiais, Rua Giuseppe Máximo Scolfaro, Cidade Universitária, Campinas, São Paulo, Brazil
| | - Maria Izabel Florindo Guedes
- Laboratório de Biotecnologia e Biologia Molecular - LBBM, Centro de Ciências da Saúde, Universidade Estadual do Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | | | - Celso Shiniti Nagano
- Laboratório de Biotecnologia Marinha - BioMar-Lab, Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Alexandre Holanda Sampaio
- Laboratório de Biotecnologia Marinha - BioMar-Lab, Departamento de Engenharia de Pesca, Universidade Federal do Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Bruno Anderson Matias Rocha
- Laboratório de Biocristalografia - LABIC, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici s/n, bloco 907, Av. Mister Hull, Fortaleza, Ceará 60440-970, Brazil.
| |
Collapse
|
6
|
Arendt-Nielsen L, Carstens E, Proctor G, Boucher Y, Clavé P, Albin Nielsen K, Nielsen TA, Reeh PW. The Role of TRP Channels in Nicotinic Provoked Pain and Irritation from the Oral Cavity and Throat: Translating Animal Data to Humans. Nicotine Tob Res 2022; 24:1849-1860. [PMID: 35199839 PMCID: PMC9653082 DOI: 10.1093/ntr/ntac054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 01/19/2022] [Accepted: 02/22/2022] [Indexed: 01/03/2023]
Abstract
Tobacco smoking-related diseases are estimated to kill more than 8 million people/year and most smokers are willing to stop smoking. The pharmacological approach to aid smoking cessation comprises nicotine replacement therapy (NRT) and inhibitors of the nicotinic acetylcholine receptor, which is activated by nicotine. Common side effects of oral NRT products include hiccoughs, gastrointestinal disturbances and, most notably, irritation, burning and pain in the mouth and throat, which are the most common reasons for premature discontinuation of NRT and termination of cessation efforts. Attempts to reduce the unwanted sensory side effects are warranted, and research discovering the most optimal masking procedures is urgently needed. This requires a firm mechanistic understanding of the neurobiology behind the activation of sensory nerves and their receptors by nicotine. The sensory nerves in the oral cavity and throat express the so-called transient receptor potential (TRP) channels, which are responsible for mediating the nicotine-evoked irritation, burning and pain sensations. Targeting the TRP channels is one way to modulate the unwanted sensory side effects. A variety of natural (Generally Recognized As Safe [GRAS]) compounds interact with the TRP channels, thus making them interesting candidates as safe additives to oral NRT products. The present narrative review will discuss (1) current evidence on how nicotine contributes to irritation, burning and pain in the oral cavity and throat, and (2) options to modulate these unwanted side-effects with the purpose of increasing adherence to NRT. Nicotine provokes irritation, burning and pain in the oral cavity and throat. Managing these side effects will ensure better compliance to oral NRT products and hence increase the success of smoking cessation. A specific class of sensory receptors (TRP channels) are involved in mediating nicotine's sensory side effects, making them to potential treatment targets. Many natural (Generally Recognized As Safe [GRAS]) compounds are potentially beneficial modulators of TRP channels.
Collapse
Affiliation(s)
- Lars Arendt-Nielsen
- Corresponding Author: Lars Arendt-Nielsen PhD, Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, School of Medicine, Aalborg University, Aalborg, Denmark. Telephone: +45 99408831; E-mail:
| | - Earl Carstens
- Neurobiology, Physiology and Behavior, University of California, Davis
| | - Gordon Proctor
- Centre for Host-Microbiome Interactions, Professor of Salivary Biology, King´s CollegeLondon, UK
| | - Yves Boucher
- Laboratory of Orofacial Neurobiology, Paris Diderot University, Paris, France
| | - Pere Clavé
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Barcelona, Spain
| | | | - Thomas A Nielsen
- Mech-Sense & Centre for Pancreatic Diseases, Department of Gastroenterology & Hepatology, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
| | - Peter W Reeh
- Institute Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
7
|
Mahajan N, Khare P, Kondepudi KK, Bishnoi M. TRPA1: Pharmacology, natural activators and role in obesity prevention. Eur J Pharmacol 2021; 912:174553. [PMID: 34627805 DOI: 10.1016/j.ejphar.2021.174553] [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: 06/08/2021] [Revised: 10/05/2021] [Accepted: 10/05/2021] [Indexed: 12/26/2022]
Abstract
Transient receptor potential ankyrin 1 (TRPA1) channel is a calcium permeable, non-selective cation channel, expressed in the sensory neurons and non-neuronal cells of different tissues. Initially studied for its role in pain and inflammation, TRPA1 has now functionally involved in multiple other physiological functions. TRPA1 channel has been extensively studied for modulation by pungent compounds present in the spices and herbs. In the last decade, the role of TRPA1 agonism in body weight reduction, secretion of hunger and satiety hormones, insulin secretion and thermogenesis, has unveiled the potential of the TRPA1 channel to be used as a preventive target to tackle obesity and associated comorbidities including insulin resistance in type 2 diabetes. In this review, we summarized the recent findings of TRPA1 based dietary/non-dietary modulation for its role in obesity prevention and therapeutics.
Collapse
Affiliation(s)
- Neha Mahajan
- Centre of Excellence in Functional Foods, Department of Food and Nutritional Biotechnology, National Agri-food Biotechnology Institute (NABI), Knowledge City-Sector-81, SAS Nagar, Punjab 140306, India; Regional Centre for Biotechnology, Faridabad-Gurgaon Expressway, Faridabad, Haryana 121001, India
| | - Pragyanshu Khare
- Centre of Excellence in Functional Foods, Department of Food and Nutritional Biotechnology, National Agri-food Biotechnology Institute (NABI), Knowledge City-Sector-81, SAS Nagar, Punjab 140306, India
| | - Kanthi Kiran Kondepudi
- Centre of Excellence in Functional Foods, Department of Food and Nutritional Biotechnology, National Agri-food Biotechnology Institute (NABI), Knowledge City-Sector-81, SAS Nagar, Punjab 140306, India
| | - Mahendra Bishnoi
- Centre of Excellence in Functional Foods, Department of Food and Nutritional Biotechnology, National Agri-food Biotechnology Institute (NABI), Knowledge City-Sector-81, SAS Nagar, Punjab 140306, India.
| |
Collapse
|
8
|
Matsuo T, Isosaka T, Hayashi Y, Tang L, Doi A, Yasuda A, Hayashi M, Lee CY, Cao L, Kutsuna N, Matsunaga S, Matsuda T, Yao I, Setou M, Kanagawa D, Higasa K, Ikawa M, Liu Q, Kobayakawa R, Kobayakawa K. Thiazoline-related innate fear stimuli orchestrate hypothermia and anti-hypoxia via sensory TRPA1 activation. Nat Commun 2021; 12:2074. [PMID: 33824316 PMCID: PMC8024280 DOI: 10.1038/s41467-021-22205-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 02/22/2021] [Indexed: 01/09/2023] Open
Abstract
Thiazoline-related innate fear-eliciting compounds (tFOs) orchestrate hypothermia, hypometabolism, and anti-hypoxia, which enable survival in lethal hypoxic conditions. Here, we show that most of these effects are severely attenuated in transient receptor potential ankyrin 1 (Trpa1) knockout mice. TFO-induced hypothermia involves the Trpa1-mediated trigeminal/vagal pathways and non-Trpa1 olfactory pathway. TFOs activate Trpa1-positive sensory pathways projecting from trigeminal and vagal ganglia to the spinal trigeminal nucleus (Sp5) and nucleus of the solitary tract (NTS), and their artificial activation induces hypothermia. TFO presentation activates the NTS-Parabrachial nucleus pathway to induce hypothermia and hypometabolism; this activation was suppressed in Trpa1 knockout mice. TRPA1 activation is insufficient to trigger tFO-mediated anti-hypoxic effects; Sp5/NTS activation is also necessary. Accordingly, we find a novel molecule that enables mice to survive in a lethal hypoxic condition ten times longer than known tFOs. Combinations of appropriate tFOs and TRPA1 command intrinsic physiological responses relevant to survival fate.
Collapse
Affiliation(s)
- Tomohiko Matsuo
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Tomoko Isosaka
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Yuichiro Hayashi
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Lijun Tang
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Akihiro Doi
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Aiko Yasuda
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Mikio Hayashi
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Chia-Ying Lee
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Liqin Cao
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Natsumaro Kutsuna
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Chiba, Japan
- LPixel Inc., Tokyo, Japan
| | - Sachihiro Matsunaga
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Takeshi Matsuda
- Department of Optical Imaging, Institute for Medical Photonics Research, PMPERC and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Ikuko Yao
- Department of Optical Imaging, Institute for Medical Photonics Research, PMPERC and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Mitsuyoshi Setou
- Department of Cellular and Molecular Anatomy and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Dai Kanagawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Koichiro Higasa
- Department of Genome Analysis, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Qinghua Liu
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan.
- National Institute of Biological Sciences, Beijing, China.
| | - Reiko Kobayakawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan.
| | - Ko Kobayakawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan.
| |
Collapse
|
9
|
Wu CK, Lin JF, Lee TS, Kou YR, Tarng DC. Role of TRPA1 in Tissue Damage and Kidney Disease. Int J Mol Sci 2021; 22:3415. [PMID: 33810314 PMCID: PMC8036557 DOI: 10.3390/ijms22073415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/20/2021] [Accepted: 03/23/2021] [Indexed: 12/11/2022] Open
Abstract
TRPA1, a nonselective cation channel, is expressed in sensory afferent that innervates peripheral targets. Neuronal TRPA1 can promote tissue repair, remove harmful stimuli and induce protective responses via the release of neuropeptides after the activation of the channel by chemical, exogenous, or endogenous irritants in the injured tissue. However, chronic inflammation after repeated noxious stimuli may result in the development of several diseases. In addition to sensory neurons, TRPA1, activated by inflammatory agents from some non-neuronal cells in the injured area or disease, might promote or protect disease progression. Therefore, TRPA1 works as a molecular sentinel of tissue damage or as an inflammation gatekeeper. Most kidney damage cases are associated with inflammation. In this review, we summarised the role of TRPA1 in neurogenic or non-neurogenic inflammation and in kidney disease, especially the non-neuronal TRPA1. In in vivo animal studies, TRPA1 prevented sepsis-induced or Ang-II-induced and ischemia-reperfusion renal injury by maintaining mitochondrial haemostasis or via the downregulation of macrophage-mediated inflammation, respectively. Renal tubular epithelial TRPA1 acts as an oxidative stress sensor to mediate hypoxia-reoxygenation injury in vitro and ischaemia-reperfusion-induced kidney injury in vivo through MAPKs/NF-kB signalling. Acute kidney injury (AKI) patients with high renal tubular TRPA1 expression had low complete renal function recovery. In renal disease, TPRA1 plays different roles in different cell types accordingly. These findings depict the important role of TRPA1 and warrant further investigation.
Collapse
Affiliation(s)
- Chung-Kuan Wu
- Division of Nephrology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei 111, Taiwan;
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei 242, Taiwan
| | - Ji-Fan Lin
- Precision Medicine Center, Department of Research, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei 111, Taiwan;
| | - Tzong-Shyuan Lee
- Department of Physiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan;
| | - Yu Ru Kou
- Department of Institue of Physiology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan;
| | - Der-Cherng Tarng
- Department of Institue of Physiology, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan;
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
- Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B), Hsinchu 300, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan
| |
Collapse
|
10
|
Startek JB, Milici A, Naert R, Segal A, Alpizar YA, Voets T, Talavera K. The Agonist Action of Alkylphenols on TRPA1 Relates to Their Effects on Membrane Lipid Order: Implications for TRPA1-Mediated Chemosensation. Int J Mol Sci 2021; 22:ijms22073368. [PMID: 33806007 PMCID: PMC8037438 DOI: 10.3390/ijms22073368] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 12/13/2022] Open
Abstract
The Transient Receptor Potential Ankyrin 1 cation channel (TRPA1) is a broadly-tuned chemosensor expressed in nociceptive neurons. Multiple TRPA1 agonists are chemically unrelated non-electrophilic compounds, for which the mechanisms of channel activation remain unknown. Here, we assess the hypothesis that such chemicals activate TRPA1 by inducing mechanical perturbations in the plasma membrane. We characterized the activation of mouse TRPA1 by non-electrophilic alkylphenols (APs) of different carbon chain lengths in the para position of the aromatic ring. Having discarded oxidative stress and the action of electrophilic mediators as activation mechanisms, we determined whether APs induce mechanical perturbations in the plasma membrane using dyes whose fluorescence properties change upon alteration of the lipid environment. APs activated TRPA1, with potency increasing with their lipophilicity. APs increased the generalized polarization of Laurdan fluorescence and the anisotropy of the fluorescence of 1,6-diphenyl-1,3,5-hexatriene (DPH), also according to their lipophilicity. Thus, the potency of APs for TRPA1 activation is an increasing function of their ability to induce lipid order and membrane rigidity. These results support the hypothesis that TRPA1 senses non-electrophilic compounds by detecting the mechanical alterations they produce in the plasma membrane. This may explain how structurally unrelated non-reactive compounds induce TRPA1 activation and support the role of TRPA1 as an unspecific sensor of potentially noxious compounds.
Collapse
Affiliation(s)
- Justyna B. Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Alina Milici
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Robbe Naert
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Andrei Segal
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Yeranddy A. Alpizar
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Thomas Voets
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (J.B.S.); (A.M.); (R.N.); (A.S.); (Y.A.A.); (T.V.)
- VIB Center for Brain & Disease Research, 3000 Leuven, Belgium
- Correspondence: ; Tel.: +32-16-330469
| |
Collapse
|
11
|
Aloum L, Alefishat E, Shaya J, Petroianu GA. Remedia Sternutatoria over the Centuries: TRP Mediation. Molecules 2021; 26:molecules26061627. [PMID: 33804078 PMCID: PMC7998681 DOI: 10.3390/molecules26061627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 11/16/2022] Open
Abstract
Sneezing (sternutatio) is a poorly understood polysynaptic physiologic reflex phenomenon. Sneezing has exerted a strange fascination on humans throughout history, and induced sneezing was widely used by physicians for therapeutic purposes, on the assumption that sneezing eliminates noxious factors from the body, mainly from the head. The present contribution examines the various mixtures used for inducing sneezes (remedia sternutatoria) over the centuries. The majority of the constituents of the sneeze-inducing remedies are modulators of transient receptor potential (TRP) channels. The TRP channel superfamily consists of large heterogeneous groups of channels that play numerous physiological roles such as thermosensation, chemosensation, osmosensation and mechanosensation. Sneezing is associated with the activation of the wasabi receptor, (TRPA1), typical ligand is allyl isothiocyanate and the hot chili pepper receptor, (TRPV1), typical agonist is capsaicin, in the vagal sensory nerve terminals, activated by noxious stimulants.
Collapse
Affiliation(s)
- Lujain Aloum
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates; (L.A.); (E.A.)
| | - Eman Alefishat
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates; (L.A.); (E.A.)
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
- Department of Biopharmaceutics and Clinical Pharmacy, Faculty of Pharmacy, The University of Jordan, Amman 11941, Jordan
| | - Janah Shaya
- Pre-Medicine Bridge Program, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates;
| | - Georg A. Petroianu
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates; (L.A.); (E.A.)
- Correspondence: ; Tel.: +971-50-413-4525
| |
Collapse
|
12
|
Zubcevic L. Temperature‐sensitive transient receptor potential vanilloid channels: structural insights into ligand‐dependent activation. Br J Pharmacol 2020; 179:3542-3559. [DOI: 10.1111/bph.15310] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/19/2020] [Accepted: 10/27/2020] [Indexed: 12/15/2022] Open
Affiliation(s)
- Lejla Zubcevic
- Department of Biochemistry and Molecular Biology The University of Kansas School of Medicine Kansas City KS USA
| |
Collapse
|
13
|
Kiss F, Pohóczky K, Szállási A, Helyes Z. Transient Receptor Potential (TRP) Channels in Head-and-Neck Squamous Cell Carcinomas: Diagnostic, Prognostic, and Therapeutic Potentials. Int J Mol Sci 2020; 21:E6374. [PMID: 32887395 PMCID: PMC7569891 DOI: 10.3390/ijms21176374] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 12/24/2022] Open
Abstract
Head-and-neck squamous cell carcinomas (HNSCC) remain a leading cause of cancer morbidity and mortality worldwide. This is a largely preventable disease with smoking, alcohol abuse, and human papilloma virus (HPV) being the main risk factors. Yet, many patients are diagnosed with advanced disease, and no survival improvement has been seen for oral SCC in the past decade. Clearly, new diagnostic and prognostic markers are needed for early diagnosis and to guide therapy. Gene expression studies implied the involvement of transient receptor potential (TRP) channels in the pathogenesis of HNSCC. TRPs are expressed in normal epithelium where they play a key role in proliferation and differentiation. There is increasing evidence that the expression of TRP channels may change in HNSCC with important implications for diagnosis, prognosis, and therapy. In this review, we propose that TRP channel expression may afford a novel opportunity for early diagnosis of HNSCC and targeted molecular treatment.
Collapse
Affiliation(s)
- Fruzsina Kiss
- Somogy County Kaposi Mór Teaching Hospital, H-7400 Kaposvár, Hungary;
| | - Krisztina Pohóczky
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, H-7624 Pécs, Hungary;
- János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
| | - Arpad Szállási
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, H-1085 Budapest, Hungary;
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, H-7624 Pécs, Hungary;
- János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, H-7624 Pécs, Hungary
- PharmInVivo Ltd., H-7629 Pécs, Hungary
| |
Collapse
|
14
|
Övey İS, Nazıroğlu M. Effects of homocysteine and memantine on oxidative stress related TRP cation channels in in-vitro model of Alzheimer’s disease. J Recept Signal Transduct Res 2020; 41:273-283. [DOI: 10.1080/10799893.2020.1806321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- İshak Suat Övey
- Department of Physiology, School of Medicine, Alanya Alaaddin Keykubat University, Alanya, Turkey
- Department of Neuroscience, Institute of Health Sciences, Suleyman Demirel University, Isparta, Turkey
| | - Mustafa Nazıroğlu
- Department of Neuroscience, Institute of Health Sciences, Suleyman Demirel University, Isparta, Turkey
- Neuroscience Research Center, Suleyman Demirel University, Isparta, Turkey
| |
Collapse
|
15
|
Gao S, Kaudimba KK, Guo S, Zhang S, Liu T, Chen P, Wang R. Transient Receptor Potential Ankyrin Type-1 Channels as a Potential Target for the Treatment of Cardiovascular Diseases. Front Physiol 2020; 11:836. [PMID: 32903613 PMCID: PMC7438729 DOI: 10.3389/fphys.2020.00836] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022] Open
Abstract
Cardiovascular disease is one of the chronic conditions with the highest mortality rate in the world. Underlying conditions such as hypertension, metabolic disorders, and habits like smoking are contributors to the manifestation of cardiovascular diseases. The treatment of cardiovascular diseases is inseparable from the development of drugs. Consequently, this has led to many researchers to focus on the search for effective drug targets. The transient receptor potential channel Ankyrin 1 (TRPA1) subtype is a non-selective cation channel, which belongs to the transient receptor potential (TRP) ion channel. Previous studies have shown that members of the TRP family contribute significantly to cardiovascular disease. However, many researchers have not explored the role of TRPA1 as a potential target for the treatment of cardiovascular diseases. Furthermore, recent studies revealed that TRPA1 is commonly expressed in the vascular endothelium. The endothelium is linked to the causes of some cardiovascular diseases, such as atherosclerosis, myocardial fibrosis, heart failure, and arrhythmia. The activation of TRPA1 has a positive effect on atherosclerosis, but it has a negative effect on other cardiovascular diseases such as myocardial fibrosis and heart failure. This review introduces the structural and functional characteristics of TRPA1 and its importance on vascular physiology and common cardiovascular diseases. Moreover, this review summarizes some evidence that TRPA1 is correlated to cardiovascular disease risk factors.
Collapse
Affiliation(s)
- Song Gao
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | | | - Shanshan Guo
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Shuang Zhang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China.,Institute of Sport Science, Harbin Sport University, Harbin, China
| | - Tiemin Liu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China.,State Key Laboratory of Genetic Engineering, Institute of Metabolism and Integrative Biology, Human Phenome Institute, Department of Endocrinology and Metabolism, and School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Peijie Chen
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Ru Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| |
Collapse
|
16
|
Voltage-dependent modulation of TRPA1 currents by diphenhydramine. Cell Calcium 2020; 90:102245. [PMID: 32634675 DOI: 10.1016/j.ceca.2020.102245] [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: 03/20/2020] [Revised: 06/08/2020] [Accepted: 06/15/2020] [Indexed: 11/23/2022]
Abstract
Diphenhydramine (DPH) has been broadly used to treat allergy. When used as a topical medicine, DPH temporarily relieves itching and pain. Although transient receptor potential type A1 (TRPA1) channel is known to play roles in both acute and chronic itch and pain, whether DPH affects the activities of TRPA1 remains unclear. Using whole-cell patch clamp recordings, we demonstrated that DPH modulates the voltage-dependence of TRPA1. When co-applied with a TRPA1 agonist, DPH significantly enhanced the inward currents while suppressing the outward currents of TRPA1, converting the channel from outwardly rectifying to inwardly rectifying. This effect of DPH occurred no matter TRPA1 was activated by an electrophilic or non-electrophilic agonist and for both mouse and human TRPA1. The modulation of TRPA1 by DPH was maintained in the L906C mutant, which by itself also causes inward rectification of TRPA1, indicating that additional acting sites are present for the modulation of TRPA1 currents by DPH. Our recordings also revealed that DPH partially blocked capsaicin evoked TRPV1 currents. These data suggest that DPH may exert its therapeutic effects on itch and pain, through modulation of TRPA1 in a voltage-dependent fashion.
Collapse
|
17
|
Startek JB, Talavera K. Lipid Raft Destabilization Impairs Mouse TRPA1 Responses to Cold and Bacterial Lipopolysaccharides. Int J Mol Sci 2020; 21:E3826. [PMID: 32481567 PMCID: PMC7312353 DOI: 10.3390/ijms21113826] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 05/21/2020] [Accepted: 05/27/2020] [Indexed: 12/15/2022] Open
Abstract
The Transient Receptor Potential ankyrin 1 cation channel (TRPA1) is expressed in nociceptive sensory neurons and epithelial cells, where it plays key roles in the detection of noxious stimuli. Recent reports showed that mouse TRPA1 (mTRPA1) localizes in lipid rafts and that its sensitivity to electrophilic and non-electrophilic agonists is reduced by cholesterol depletion from the plasma membrane. Since effects of manipulating membrane cholesterol levels on other TRP channels are known to vary across different stimuli we here tested whether the disruption of lipid rafts also affects mTRPA1 activation by cold or bacterial lipopolysaccharides (LPS). Cooling to 12 °C, E. coli LPS and allyl isothiocyanate (AITC) induced robust Ca2+ responses in CHO-K1 cells stably transfected with mTRPA1. The amplitudes of the responses to these stimuli were significantly lower in cells treated with the cholesterol scavenger methyl β-cyclodextrin (MCD) or with the sphingolipids hydrolyzer sphingomyelinase (SMase). This effect was more prominent with higher concentrations of the raft destabilizers. Our data also indicate that reduction of cholesterol does not alter the expression of mTRPA1 in the plasma membrane in the CHO-K1 stable expression system, and that the most salient effect is that on the channel gating. Our findings further indicate that the function of mTRPA1 is regulated by the local lipid environment and suggest that targeting lipid-TRPA1 interactions may be a strategy for the treatment of pain and neurogenic inflammation.
Collapse
Affiliation(s)
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain & Disease Research, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000 Leuven, Belgium;
| |
Collapse
|
18
|
Talavera K, Startek JB, Alvarez-Collazo J, Boonen B, Alpizar YA, Sanchez A, Naert R, Nilius B. Mammalian Transient Receptor Potential TRPA1 Channels: From Structure to Disease. Physiol Rev 2019; 100:725-803. [PMID: 31670612 DOI: 10.1152/physrev.00005.2019] [Citation(s) in RCA: 212] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The transient receptor potential ankyrin (TRPA) channels are Ca2+-permeable nonselective cation channels remarkably conserved through the animal kingdom. Mammals have only one member, TRPA1, which is widely expressed in sensory neurons and in non-neuronal cells (such as epithelial cells and hair cells). TRPA1 owes its name to the presence of 14 ankyrin repeats located in the NH2 terminus of the channel, an unusual structural feature that may be relevant to its interactions with intracellular components. TRPA1 is primarily involved in the detection of an extremely wide variety of exogenous stimuli that may produce cellular damage. This includes a plethora of electrophilic compounds that interact with nucleophilic amino acid residues in the channel and many other chemically unrelated compounds whose only common feature seems to be their ability to partition in the plasma membrane. TRPA1 has been reported to be activated by cold, heat, and mechanical stimuli, and its function is modulated by multiple factors, including Ca2+, trace metals, pH, and reactive oxygen, nitrogen, and carbonyl species. TRPA1 is involved in acute and chronic pain as well as inflammation, plays key roles in the pathophysiology of nearly all organ systems, and is an attractive target for the treatment of related diseases. Here we review the current knowledge about the mammalian TRPA1 channel, linking its unique structure, widely tuned sensory properties, and complex regulation to its roles in multiple pathophysiological conditions.
Collapse
Affiliation(s)
- Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Justyna B Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Julio Alvarez-Collazo
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Brett Boonen
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Yeranddy A Alpizar
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Alicia Sanchez
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Robbe Naert
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Bernd Nilius
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| |
Collapse
|
19
|
Nystoriak MA, Kilfoil PJ, Lorkiewicz PK, Ramesh B, Kuehl PJ, McDonald J, Bhatnagar A, Conklin DJ. Comparative effects of parent and heated cinnamaldehyde on the function of human iPSC-derived cardiac myocytes. Toxicol In Vitro 2019; 61:104648. [PMID: 31518667 DOI: 10.1016/j.tiv.2019.104648] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 08/19/2019] [Accepted: 09/09/2019] [Indexed: 12/31/2022]
Abstract
Many e-cigarette products contain cinnamaldehyde as a primary constituent of cinnamon flavorings. When used as a food additive, cinnamaldehyde is generally regarded as safe for ingestion. However, little is known about the effects of cinnamaldehyde or its degradation products, generated after heating and inhalation, which may lead to elevated circulatory exposure to the heart. Hence, in this study, we tested the in vitro cardiac toxicity of cinnamaldehyde and its thermal degradation products generated by heating at low (200 ± 50 °C) and high temperatures (700 ± 50 °C) on the contractility, rhythmicity and electrical signaling properties of human induced pluripotent stem cell-derived cardiac myocytes (hiPSC-CMs). Cellular impedance measurements on spontaneously beating hiPSC-CMs revealed that cinnamaldehyde significantly alters contraction-dependent signal amplitude, beating rate, and cell morphology. These effects were attenuated after cinnamaldehyde was subjected to heating at low or high temperatures. Current clamp analysis of hiPSC-CM action potentials (APs) showed only modest effects of acute application of 1-100 μM cinnamaldehyde on resting membrane potential, while prolonged (~20 min) application of 100 μM cinnamaldehyde resulted in progressive depolarization and loss of rhythmic AP spiking activity. Collectively, these results suggest that micromolar levels of cinnamaldehyde could alter cardiac excitability, in part by impairing the processes that regulate membrane potential and depolarization. Our results further suggest that heating cinnamaldehyde by itself does not directly lead to the formation of products with greater cardiotoxicity in vitro.
Collapse
Affiliation(s)
- Matthew A Nystoriak
- American Heart Association Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40202, United States of America; Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY 40202, United States of America; Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America; Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, United States of America.
| | - Peter J Kilfoil
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America
| | - Pawel K Lorkiewicz
- American Heart Association Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40202, United States of America; Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America
| | - Bhargav Ramesh
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America
| | - Philip J Kuehl
- Lovelace Biomedical, Albuquerque, NM 87108-5127, United States of America
| | - Jacob McDonald
- Lovelace Biomedical, Albuquerque, NM 87108-5127, United States of America
| | - Aruni Bhatnagar
- American Heart Association Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40202, United States of America; Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY 40202, United States of America; Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America; Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, United States of America
| | - Daniel J Conklin
- American Heart Association Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40202, United States of America; Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY 40202, United States of America; Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, 40202, United States of America; Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, United States of America
| |
Collapse
|
20
|
Logashina YA, Korolkova YV, Kozlov SA, Andreev YA. TRPA1 Channel as a Regulator of Neurogenic Inflammation and Pain: Structure, Function, Role in Pathophysiology, and Therapeutic Potential of Ligands. BIOCHEMISTRY (MOSCOW) 2019; 84:101-118. [PMID: 31216970 DOI: 10.1134/s0006297919020020] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
TRPA1 is a cation channel located on the plasma membrane of many types of human and animal cells, including skin sensory neurons and epithelial cells of the intestine, lungs, urinary bladder, etc. TRPA1 is the major chemosensor that also responds to thermal and mechanical stimuli. Substances that activate TRPA1, e.g., allyl isothiocyanates (pungent components of mustard, horseradish, and wasabi), cinnamaldehyde from cinnamon, organosulfur compounds from garlic and onion, tear gas, acrolein and crotonaldehyde from cigarette smoke, etc., cause burning, mechanical and thermal hypersensitivity, cough, eye irritation, sneezing, mucus secretion, and neurogenic inflammation. An increased activity of TRPA1 leads to the emergence of chronic pruritus and allergic dermatitis and is associated with episodic pain syndrome, a hereditary disease characterized by episodes of debilitating pain triggered by stress. TRPA1 is now considered as one of the targets for developing new anti-inflammatory and analgesic drugs. This review summarizes information on the structure, function, and physiological role of this channel, as well as describes known TRPA1 ligands and their significance as therapeutic agents in the treatment of inflammation-associated pain.
Collapse
Affiliation(s)
- Yu A Logashina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.,Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russia
| | - Yu V Korolkova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - S A Kozlov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Ya A Andreev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia. .,Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russia
| |
Collapse
|
21
|
N-Cinnamoylanthranilates as human TRPA1 modulators: Structure-activity relationships and channel binding sites. Eur J Med Chem 2019; 170:141-156. [DOI: 10.1016/j.ejmech.2019.02.074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 01/14/2023]
|
22
|
Wang XL, Cui LW, Liu Z, Gao YM, Wang S, Li H, Liu HX, Yu LJ. Effects of TRPA1 activation and inhibition on TRPA1 and CGRP expression in dorsal root ganglion neurons. Neural Regen Res 2019; 14:140-148. [PMID: 30531088 PMCID: PMC6262987 DOI: 10.4103/1673-5374.243719] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Transient receptor potential ankyrin 1 (TRPA1) is a key player in pain and neurogenic inflammation, and is localized in nociceptive primary sensory dorsal root ganglion (DRG) neurons. TRPA1 plays a major role in the transmission of nociceptive sensory signals. The generation of neurogenic inflammation appears to involve TRPA1-evoked release of calcitonin gene-related peptide (CGRP). However, it remains unknown whether TRPA1 or CGRP expression is affected by TRPA1 activation. Thus, in this study, we examined TRPA1 and CGRP expression in DRG neurons in vitro after treatment with the TRPA1 activator formaldehyde or the TRPA1 blocker menthol. In addition, we examined the role of extracellular signal-regulated protein kinase 1/2 (ERK1/2) in this process. DRG neurons in culture were exposed to formaldehyde, menthol, the ERK1/2 inhibitor PD98059 + formaldehyde, or PD98059 + menthol. After treatment, real-time polymerase chain reaction, western blot assay and double immunofluorescence labeling were performed to evaluate TRPA1 and CGRP expression in DRG neurons. Formaldehyde elevated mRNA and protein levels of TRPA1 and CGRP, as well as the proportion of TRPA1- and CGRP-positive neurons. In contrast, menthol reduced TRPA1 and CGRP expression. Furthermore, the effects of formaldehyde, but not menthol, on CGRP expression were blocked by pretreatment with PD98059. PD98059 pretreatment did not affect TRPA1 expression in the presence of formaldehyde or menthol.
Collapse
Affiliation(s)
- Xiao-Lei Wang
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Li-Wei Cui
- Department of Respiratory Medicine, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Zhen Liu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Yue-Ming Gao
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Sheng Wang
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Hao Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Hu-Xiang Liu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Ling-Jia Yu
- Department of Rheumatology, Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| |
Collapse
|
23
|
Abstract
The transient receptor potential ankyrin 1 (TRPA1) ion channel is expressed in pain-sensing neurons and other tissues and has become a major target in the development of novel pharmaceuticals. A remarkable feature of the channel is its long list of activators, many of which we are exposed to in daily life. Many of these agonists induce pain and inflammation, making TRPA1 a major target for anti-inflammatory and analgesic therapies. Studies in human patients and in experimental animals have confirmed an important role for TRPA1 in a number of pain conditions. Over the recent years, much progress has been made in elucidating the molecular structure of TRPA1 and in discovering binding sites and modulatory sites of the channel. Because the list of published mutations and important molecular sites is steadily growing and because it has become difficult to see the forest for the trees, this review aims at summarizing the current knowledge about TRPA1, with a special focus on the molecular structure and the known binding or gating sites of the channel.
Collapse
Affiliation(s)
- Jannis E Meents
- Institute of Physiology, University Hospital RWTH Aachen , Aachen , Germany
| | - Cosmin I Ciotu
- Center for Physiology and Pharmacology, Medical University of Vienna , Vienna , Austria
| | - Michael J M Fischer
- Center for Physiology and Pharmacology, Medical University of Vienna , Vienna , Austria
| |
Collapse
|
24
|
Dallazen JL, Maria-Ferreira D, da Luz BB, Nascimento AM, Cipriani TR, de Souza LM, Glugoski LP, Silva BJG, Geppetti P, de Paula Werner MF. Distinct mechanisms underlying local antinociceptive and pronociceptive effects of natural alkylamides from Acmella oleracea compared to synthetic isobutylalkyl amide. Fitoterapia 2018; 131:225-235. [DOI: 10.1016/j.fitote.2018.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 10/27/2022]
|
25
|
TRP Channels as Drug Targets to Relieve Itch. Pharmaceuticals (Basel) 2018; 11:ph11040100. [PMID: 30301231 PMCID: PMC6316386 DOI: 10.3390/ph11040100] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/26/2018] [Accepted: 10/03/2018] [Indexed: 12/14/2022] Open
Abstract
Although acute itch has a protective role by removing irritants to avoid further damage, chronic itch is debilitating, significantly impacting quality of life. Over the past two decades, a considerable amount of stimulating research has been carried out to delineate mechanisms of itch at the molecular, cellular, and circuit levels. There is growing evidence that transient receptor potential (TRP) channels play important roles in itch signaling. The purpose of this review is to summarize our current knowledge about the role of TRP channels in the generation of itch under both physiological and pathological conditions, thereby identifying them as potential drug targets for effective anti-itch therapies.
Collapse
|
26
|
Startek JB, Voets T, Talavera K. To flourish or perish: evolutionary TRiPs into the sensory biology of plant-herbivore interactions. Pflugers Arch 2018; 471:213-236. [PMID: 30229297 DOI: 10.1007/s00424-018-2205-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/31/2018] [Accepted: 09/06/2018] [Indexed: 12/18/2022]
Abstract
The interactions between plants and their herbivores are highly complex systems generating on one side an extraordinary diversity of plant protection mechanisms and on the other side sophisticated consumer feeding strategies. Herbivores have evolved complex, integrative sensory systems that allow them to distinguish between food sources having mere bad flavors from the actually toxic ones. These systems are based on the senses of taste, olfaction and somatosensation in the oral and nasal cavities, and on post-ingestive chemosensory mechanisms. The potential ability of plant defensive chemical traits to induce tissue damage in foragers is mainly encoded in the latter through chemesthetic sensations such as burning, pain, itch, irritation, tingling, and numbness, all of which induce innate aversive behavioral responses. Here, we discuss the involvement of transient receptor potential (TRP) channels in the chemosensory mechanisms that are at the core of complex and fascinating plant-herbivore ecological networks. We review how "sensory" TRPs are activated by a myriad of plant-derived compounds, leading to cation influx, membrane depolarization, and excitation of sensory nerve fibers of the oronasal cavities in mammals and bitter-sensing cells in insects. We also illustrate how TRP channel expression patterns and functionalities vary between species, leading to intriguing evolutionary adaptations to the specific habitats and life cycles of individual organisms.
Collapse
Affiliation(s)
- Justyna B Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium. .,VIB Center for Brain & Disease Research, Leuven, Belgium.
| | - Thomas Voets
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, Campus Gasthuisberg O&N1 bus 802, 3000, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| |
Collapse
|
27
|
Startek JB, Talavera K, Voets T, Alpizar YA. Differential interactions of bacterial lipopolysaccharides with lipid membranes: implications for TRPA1-mediated chemosensation. Sci Rep 2018; 8:12010. [PMID: 30104600 PMCID: PMC6089920 DOI: 10.1038/s41598-018-30534-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 07/31/2018] [Indexed: 12/21/2022] Open
Abstract
Bacterial lipopolysaccharides (LPS) activate the TRPA1 cation channels in sensory neurons, leading to acute pain and inflammation in mice and to aversive behaviors in fruit flies. However, the precise mechanisms underlying this effect remain elusive. Here we assessed the hypothesis that TRPA1 is activated by mechanical perturbations induced upon LPS insertion in the plasma membrane. We asked whether the effects of different LPS on TRPA1 relate to their ability to induce mechanical alterations in artificial and cellular membranes. We found that LPS from E. coli, but not from S. minnesota, activates TRPA1. We then assessed the effects of these LPS on lipid membranes using dyes whose fluorescence properties change upon alteration of the local lipid environment. E. coli LPS was more effective than S. minnesota LPS in shifting Laurdan’s emission spectrum towards lower wavelengths, increasing the fluorescence anisotropy of diphenylhexatriene and reducing the fluorescence intensity of merocyanine 540. These data indicate that E. coli LPS induces stronger changes in the local lipid environment than S. minnesota LPS, paralleling its distinct ability to activate TRPA1. Our findings indicate that LPS activate TRPA1 by producing mechanical perturbations in the plasma membrane and suggest that TRPA1-mediated chemosensation may result from primary mechanosensory mechanisms.
Collapse
Affiliation(s)
- Justyna B Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine. KU Leuven; VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine. KU Leuven; VIB Center for Brain & Disease Research, Leuven, Belgium.
| | - Thomas Voets
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine. KU Leuven; VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Yeranddy A Alpizar
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine. KU Leuven; VIB Center for Brain & Disease Research, Leuven, Belgium
| |
Collapse
|
28
|
Kortekaas Krohn I, Callebaut I, Alpizar YA, Steelant B, Van Gerven L, Skov PS, Kasran A, Talavera K, Wouters MM, Ceuppens JL, Seys SF, Hellings PW. MP29-02 reduces nasal hyperreactivity and nasal mediators in patients with house dust mite-allergic rhinitis. Allergy 2018; 73:1084-1093. [PMID: 29121401 DOI: 10.1111/all.13349] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2017] [Indexed: 01/13/2023]
Abstract
BACKGROUND Nasal hyperreactivity (NHR) is an important clinical feature of allergic rhinitis (AR). The efficacy of MP29-02 (azelastine hydrochloride (AZE) and fluticasone propionate [FP]) nasal spray on local inflammatory mediators and NHR in AR is unknown. We tested if MP29-02 decreases inflammatory mediators and NHR in AR and if this effect is due to restoration of nasal epithelial barrier function. METHODS A 4-week double-blinded placebo-controlled trial with MP29-02 treatment was conducted in 28 patients with house dust mite (HDM) AR. The presence of NHR was evaluated by measuring reduction in nasal flow upon cold dry air exposure. The effects of AZE ± FP on barrier integrity and airway inflammation were studied in a murine model of HDM-induced NHR and on reduced activation of murine sensory neurons and human mast cells. RESULTS MP29-02 but not placebo reduced NHR (P < .0001 vs P = .21), levels of substance P (P = .026 vs P = .941), and β-hexosaminidase (P = .036 vs P = .632) in human nasal secretions. In wild-type C57BL6 mice, the reduction in β-hexosaminidase levels (P < .0001) by AZE + FP treatment upon HDM challenge was found in parallel with a decreased transmucosal passage (P = .0012) and completely reversed eosinophilic inflammation (P = .0013). In vitro, repeated applications of AZE + FP desensitized sensory neurons expressing the transient receptor potential channels TRPA1 and TRPV1. AZE + FP reduced MC degranulation to the same extent as AZE alone. CONCLUSION MP29-02 treatment reduces inflammatory mediators and NHR in AR. The effects of AZE + FP on MC degranulation, nasal epithelial barrier integrity, and TRP channels provide novel insights into the pathophysiology of allergic rhinitis.
Collapse
Affiliation(s)
- I. Kortekaas Krohn
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
| | - I. Callebaut
- Clinical Division of Otorhinolaryngology, Head and Neck Surgery; University Hospitals Leuven; Leuven Belgium
| | - Y. A. Alpizar
- Department of Cellular and Molecular Medicine; Laboratory of Ion Channel Research; VIB Center for Brain & Disease Research; KU Leuven; Leuven Belgium
| | - B. Steelant
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
| | - L. Van Gerven
- Clinical Division of Otorhinolaryngology, Head and Neck Surgery; University Hospitals Leuven; Leuven Belgium
| | | | - A. Kasran
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
| | - K. Talavera
- Department of Cellular and Molecular Medicine; Laboratory of Ion Channel Research; VIB Center for Brain & Disease Research; KU Leuven; Leuven Belgium
| | - M. M. Wouters
- Translational Research Center for Gastro Intestinal Disorders (TARGID); KU Leuven; Leuven Belgium
| | - J. L. Ceuppens
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
| | - S. F. Seys
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
| | - P. W. Hellings
- Laboratory of Clinical Immunology; Department Microbiology & Immunology; KU Leuven; Leuven Belgium
- Clinical Division of Otorhinolaryngology, Head and Neck Surgery; University Hospitals Leuven; Leuven Belgium
- Clinical Division of Otorhinolaryngology, Head and Neck Surgery; Academic Medical Center; Amsterdam the Netherlands
- Upper Airways Research Laboratory; University of Ghent; Ghent Belgium
| |
Collapse
|
29
|
Samanta A, Kiselar J, Pumroy RA, Han S, Moiseenkova-Bell VY. Structural insights into the molecular mechanism of mouse TRPA1 activation and inhibition. J Gen Physiol 2018; 150:751-762. [PMID: 29703838 PMCID: PMC5940248 DOI: 10.1085/jgp.201711876] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 02/26/2018] [Accepted: 04/06/2018] [Indexed: 12/13/2022] Open
Abstract
Pain, though serving the beneficial function of provoking a response to dangerous situations, is an unpleasant sensory and emotional experience. Transient receptor potential ankyrin 1 (TRPA1) is a member of the transient receptor potential (TRP) cation channel family and is localized in "nociceptors," where it plays a key role in the transduction of chemical, inflammatory, and neuropathic pain. TRPA1 is a Ca2+-permeable, nonselective cation channel that is activated by a large variety of structurally unrelated electrophilic and nonelectrophilic chemical compounds. Electrophilic ligands are able to activate TRPA1 channels by interacting with critical cysteine residues on the N terminus of the channels via covalent modification and/or disulfide bonds. Activation by electrophilic compounds is dependent on their thiol-reactive moieties, accounting for the structural diversity of the group. On the other hand, nonelectrophilic ligands do not interact with critical cysteines on the channel, so the structural diversity of this group is unexplained. Although near-atomic-resolution structures of TRPA1 were resolved recently by cryo-electron microscopy, in the presence of both agonists and antagonists, detailed mechanisms of channel activation and inhibition by these modulators could not be determined. Here, we investigate the effect of both electrophilic and nonelectrophilic ligands on TRPA1 channel conformational rearrangements with limited proteolysis and mass spectrometry. Collectively, our results reveal that channel modulation results in conformational rearrangements in the N-terminal ankyrin repeats, the pre-S1 helix, the TRP-like domain, and the linker regions of the channel.
Collapse
Affiliation(s)
- Amrita Samanta
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH
| | - Janna Kiselar
- Center for Proteomics, School of Medicine, Case Western Reserve University, Cleveland, OH
| | - Ruth A Pumroy
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, PA
| | | | - Vera Y Moiseenkova-Bell
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH .,Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania, Philadelphia, PA
| |
Collapse
|
30
|
Boonen B, Alpizar YA, Sanchez A, López-Requena A, Voets T, Talavera K. Differential effects of lipopolysaccharide on mouse sensory TRP channels. Cell Calcium 2018; 73:72-81. [PMID: 29689522 DOI: 10.1016/j.ceca.2018.04.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/24/2018] [Accepted: 04/10/2018] [Indexed: 12/24/2022]
Abstract
Acute neurogenic inflammation and pain associated to bacterial infection have been traditionally ascribed to sensitization and activation of sensory nerve afferents secondary to immune cell stimulation. However, we recently showed that lipopolysaccharides (LPS) directly activate the Transient Receptor Potential channels TRPA1 in sensory neurons and TRPV4 in airway epithelial cells. Here we investigated whether LPS activates other sensory TRP channels expressed in sensory neurons. Using intracellular Ca2+ imaging and patch-clamp we determined the effects of LPS on recombinant TRPV1, TRPV2, TRPM3 and TRPM8, heterologously expressed in HEK293T cells. We found that LPS activates TRPV1, although with lower potency than for TRPA1. Activation of TRPV1 by LPS was not affected by mutations of residues required for activation by electrophilic agents or by diacylglycerol and capsaicin. On the other hand, LPS weakly activated TRPM3, activated TRPM8 at 25 °C, but not at 35 °C, and was ineffective on TRPV2. Experiments performed in mouse dorsal root ganglion (DRG) neurons revealed that genetic ablation of Trpa1 did not abolish the responses to LPS, but remain detected in 30% of capsaicin-sensitive cells. The population of neurons responding to LPS was dramatically lower in double Trpa1/Trpv1 KO neurons. Our results show that, in addition to TRPA1, other TRP channels in sensory neurons can be targets of LPS, suggesting that they may contribute to trigger and regulate innate defenses against gram-negative bacterial infections.
Collapse
Affiliation(s)
- Brett Boonen
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium
| | - Yeranddy A Alpizar
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium
| | - Alicia Sanchez
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium
| | - Alejandro López-Requena
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium
| | - Thomas Voets
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium
| | - Karel Talavera
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, VIB Center for Brain & Disease Research, O&N1 Herestraat 49 - box 802, 3000, Leuven, Belgium.
| |
Collapse
|
31
|
Jiang M, Taghizadeh F, Steyger PS. Potential Mechanisms Underlying Inflammation-Enhanced Aminoglycoside-Induced Cochleotoxicity. Front Cell Neurosci 2017; 11:362. [PMID: 29209174 PMCID: PMC5702304 DOI: 10.3389/fncel.2017.00362] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 11/03/2017] [Indexed: 12/20/2022] Open
Abstract
Aminoglycoside antibiotics remain widely used for urgent clinical treatment of life-threatening infections, despite the well-recognized risk of permanent hearing loss, i.e., cochleotoxicity. Recent studies show that aminoglycoside-induced cochleotoxicity is exacerbated by bacteriogenic-induced inflammation. This implies that those with severe bacterial infections (that induce systemic inflammation), and are treated with bactericidal aminoglycosides are at greater risk of drug-induced hearing loss than previously recognized. Incorporating this novel comorbid factor into cochleotoxicity risk prediction models will better predict which individuals are more predisposed to drug-induced hearing loss. Here, we review the cellular and/or signaling mechanisms by which host-mediated inflammatory responses to infection could enhance the trafficking of systemically administered aminoglycosides into the cochlea to enhance the degree of cochleotoxicity over that in healthy preclinical models. Once verified, these mechanisms will be potential targets for novel pharmacotherapeutics that reduce the risk of drug-induced hearing loss (and acute kidney damage) without compromising the life-saving bactericidal efficacy of aminoglycosides.
Collapse
Affiliation(s)
- Meiyan Jiang
- Oregon Hearing Research Center, Oregon Health & Science University, Portland, OR, United States
| | - Farshid Taghizadeh
- Oregon Hearing Research Center, Oregon Health & Science University, Portland, OR, United States
| | - Peter S Steyger
- Oregon Hearing Research Center, Oregon Health & Science University, Portland, OR, United States.,National Center for Rehabilitative Auditory Research, VA Portland Health Care System, Portland, OR, United States
| |
Collapse
|
32
|
Mathie K, Lainer J, Spreng S, Dawid C, Andersson DA, Bevan S, Hofmann T. Structure-Pungency Relationships and TRP Channel Activation of Drimane Sesquiterpenes in Tasmanian Pepper (Tasmannia lanceolata). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:5700-5712. [PMID: 28657737 DOI: 10.1021/acs.jafc.7b02356] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Sensory-guided fractionation of extracts of Tasmanian pepper berries revealed 20 drimane sesquiterpens, among which polygodial, warburganal, and 1β-acetoxy-9-deoxy-isomuzigadial exhibited the lowest pungency threshold concentrations on the tongue surface (0.6-2.8 nmol/cm2) and elicited a dose-dependent calcium influx into mTRPA1 expressing CHO cells with the lowest EC50 values (4.5 ± 1.0 to 16.7 ± 7.5 μmol/L) and a good correlation to oral pungency thresholds (R2 = 0.986, linear regression). Calcium imaging assays demonstrated these chemosensates to induce a calcium influx into cultured trigeminal neurons prepared from wildtype (TRPA1+/+) mice, whereas no calcium influx was observed in neurons from TRPA1 knockout mice (TRPA1-/-), thus confirming the α,β-unsaturated 1,4-dialdehyde structure to be the required structural motif for a low oral puncency thresholds and activation of the Transient Receptor Potential Channel A1 (TRPA1). Time-resolved NMR experiments confirmed the pungency mediating mechanism for electrophilic drimane sesquiterpene dialdehydes to be different from that found for other electrophilic pungent agents like isothiocyanates, which have been shown to undergo a covalent binding with cysteine residues in TRPA1. Instead, the high-impact chemosensates polygodial, warburganal, and 1β-acetoxy-9-deoxy-isomuzigadial showed immediate reactivity with the ε-amino group of lysine side chains to give pyrrole-type conjugates, thus showing evidence for TRPA1 activation by covalent lysine modification.
Collapse
Affiliation(s)
- Klaus Mathie
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Straße 34, D-85350 Freising, Germany , and
| | - Johanna Lainer
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Straße 34, D-85350 Freising, Germany , and
| | - Stefan Spreng
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Straße 34, D-85350 Freising, Germany , and
| | - Corinna Dawid
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Straße 34, D-85350 Freising, Germany , and
| | - David A Andersson
- Kings's College London , Wolfron Centre for Age-Related Diseases, London SE1 1UL, United Kingdom
| | - Stuart Bevan
- Kings's College London , Wolfron Centre for Age-Related Diseases, London SE1 1UL, United Kingdom
| | - Thomas Hofmann
- Chair of Food Chemistry and Molecular Sensory Science, Technische Universität München , Lise-Meitner-Straße 34, D-85350 Freising, Germany , and
| |
Collapse
|
33
|
Skerratt S. Recent Progress in the Discovery and Development of TRPA1 Modulators. PROGRESS IN MEDICINAL CHEMISTRY 2017; 56:81-115. [PMID: 28314413 DOI: 10.1016/bs.pmch.2016.11.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
TRPA1 is a well-validated therapeutic target in areas of high unmet medical need that include pain and respiratory disorders. The human genetic rationale for TRPA1 as a pain target is provided by a study describing a rare gain-of-function mutation in TRPA1, causing familial episodic pain syndrome. There is a growing interest in the TRPA1 field, with many pharmaceutical companies reporting the discovery of TRPA1 chemical matter; however, GRC 17536 remains to date the only TRPA1 antagonist to have completed Phase IIa studies. A key issue in the progression of TRPA1 programmes is the identification of high-quality orally bioavailable molecules. Most published TRPA1 ligands are commonly not suitable for clinical progression due to low lipophilic efficiency and/or poor absorption, distribution, metabolism, excretion and pharmaceutical properties. The recent TRPA1 cryogenic electron microscopy structure from the Cheng and Julius labs determined the structure of full-length human TRPA1 at up to 4Å resolution in the presence of TRPA1 ligands. This ground-breaking science paves the way to enable structure-based drug design within the TRPA1 field.
Collapse
Affiliation(s)
- S Skerratt
- Convergence (a Biogen Company), Cambridge, United Kingdom
| |
Collapse
|
34
|
Hoeck EA, Marker JB, Gazerani P, H. Andersen H, Arendt-Nielsen L. Preclinical and human surrogate models of itch. Exp Dermatol 2016; 25:750-7. [DOI: 10.1111/exd.13078] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Emil A. Hoeck
- SMI; Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg E Denmark
| | - Jens B. Marker
- SMI; Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg E Denmark
| | - Parisa Gazerani
- SMI; Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg E Denmark
| | - Hjalte H. Andersen
- SMI; Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg E Denmark
| | - Lars Arendt-Nielsen
- SMI; Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg E Denmark
| |
Collapse
|
35
|
Jawale A, Datusalia AK, Bishnoi M, Sharma SS. Reversal of diabetes-induced behavioral and neurochemical deficits by cinnamaldehyde. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:923-930. [PMID: 27387400 DOI: 10.1016/j.phymed.2016.04.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 04/25/2016] [Accepted: 04/26/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Chronic hyperglycemia during diabetes is associated with altered cognitive function. Cinnamaldehyde showed to have many pharmacological activities indicating anti-diabetic, cognitive enhancer, antiinflammatory etc. In the present study, we have investigated the effects of cinnamaldehyde (CA) on diabetes-induced cognitive deficits. METHODS Diabetes was induced in Sprague Dawley rats using high fat diet followed by streptozotocin (35mg/kg, i.p.). High fat diet feeding was continued for 18 week after STZ administration. CA was administered daily during the last 3 weeks (week 16-18) at a doses of 10, 20 and 40mg/kg (p.o.). Animals were subjected to behavioral tests during 18th week. Neurotransmitter levels (glutamate and GABA), acetylcholine esterase (AChE) activity and inflammatory markers (TNF-α and IL-6) were assessed in the hippocampus and cortex. RESULTS Vehicle-treated diabetic rats showed impaired behavior in open field, elevated plus maze and water maze test compared to age-matched control rats. Cinnamaldehyde showed significant reduction in blood glucose levels at dose of 20 and 40mg/kg. Three weeks treatments of cinnamaldehyde showed significant amelioration of behavioral deficits in diabetic rats. Chronic treatment with cinnamaldehyde showed improvement in brain ChE activity, neurotransmitter levels and reduction in IL-6 and TNF-α levels. CONCLUSION The present study demonstrates that treatment with cinnamaldehyde reverse neuroinflammation and changes in neurotransmitter levels, and consequently improves behavioral deficits in diabetic rats.
Collapse
Affiliation(s)
- Akshay Jawale
- Molecular Neuropharmacology Lab, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -160062, Punjab, India.
| | - Ashok Kumar Datusalia
- Molecular Neuropharmacology Lab, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -160062, Punjab, India.
| | - Mahendra Bishnoi
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar (Mohali)-160071, Punjab, India.
| | - Shyam S Sharma
- Molecular Neuropharmacology Lab, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar -160062, Punjab, India.
| |
Collapse
|
36
|
Kozai D, Sakaguchi R, Ohwada T, Mori Y. Deciphering Subtype-Selective Modulations in TRPA1 Biosensor Channels. Curr Neuropharmacol 2016; 13:266-78. [PMID: 26411770 PMCID: PMC4598439 DOI: 10.2174/1570159x1302150525122020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The transient receptor potential (TRP) proteins are a family of ion channels that act as
cellular sensors. Several members of the TRP family are sensitive to oxidative stress mediators.
Among them, TRPA1 is remarkably susceptible to various oxidants, and is known to mediate
neuropathic pain and respiratory, vascular and gastrointestinal functions, making TRPA1 an
attractive therapeutic target. Recent studies have revealed a number of modulators (both activators and inhibitors) that act
on TRPA1. Endogenous mediators of oxidative stress and exogenous electrophiles activate TRPA1 through oxidative
modification of cysteine residues. Non-electrophilic compounds also activate TRPA1. Certain non-electrophilic
modulators may act on critical non-cysteine sites in TRPA1. However, a method to achieve selective modulation of
TRPA1 by small molecules has not yet been established. More recently, we found that a novel N-nitrosamine compound
activates TRPA1 by S-nitrosylation (the addition of a nitric oxide (NO) group to cysteine thiol), and does so with
significant selectivity over other NO-sensitive TRP channels. It is proposed that this subtype selectivity is conferred
through synergistic effects of electrophilic cysteine transnitrosylation and molecular recognition of the non-electrophilic
moiety on the N-nitrosamine. In this review, we describe the molecular pharmacology of these TRPA1 modulators and
discuss their modulatory mechanisms.
Collapse
Affiliation(s)
| | | | | | - Yasuo Mori
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Nishikyoku, Kyoto 615-8510, Japan.
| |
Collapse
|
37
|
Jensen TK, Andersen MV, Nielsen KA, Arendt-Nielsen L, Boudreau SA. Interaction between intra-oral cinnamaldehyde and nicotine assessed by psychophysical and physiological responses. Eur J Oral Sci 2016; 124:349-57. [DOI: 10.1111/eos.12279] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Tanja K. Jensen
- Center for Sensory-Motor Interaction (SMI); Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg Denmark
| | - Michelle V. Andersen
- Center for Sensory-Motor Interaction (SMI); Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg Denmark
| | | | - Lars Arendt-Nielsen
- Center for Sensory-Motor Interaction (SMI); Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg Denmark
| | - Shellie A. Boudreau
- Center for Sensory-Motor Interaction (SMI); Department of Health Science and Technology; Faculty of Medicine; Aalborg University; Aalborg Denmark
| |
Collapse
|
38
|
Rosendahl J, Braun HS, Schrapers KT, Martens H, Stumpff F. Evidence for the functional involvement of members of the TRP channel family in the uptake of Na(+) and NH4 (+) by the ruminal epithelium. Pflugers Arch 2016; 468:1333-52. [PMID: 27184746 DOI: 10.1007/s00424-016-1835-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 03/14/2016] [Accepted: 05/04/2016] [Indexed: 01/14/2023]
Abstract
Large quantities of protein are degraded in the fermentative parts of the gut to ammonia, which is absorbed, detoxified to urea, and excreted, leading to formation of nitrogenous compounds such as N2O that are associated with global warming. In ruminants, channel-mediated uptake of NH4 (+) from the rumen predominates. The molecular identity of these channels remains to be clarified. Ruminal cells and epithelia from cows and sheep were investigated using patch clamp, Ussing chamber, microelectrode techniques, and qPCR. In patch clamp experiments, bovine ruminal epithelial cells expressed a conductance for NH4 (+) that could be blocked in a voltage-dependent manner by divalent cations. In the native epithelium, NH4 (+) depolarized the apical potential, acidified the cytosol and induced a rise in short-circuit current (I sc) that persisted after the removal of Na(+), was blocked by verapamil, enhanced by the removal of divalent cations, and was sensitive to certain transient receptor potential (TRP) channel modulators. Menthol or thymol stimulated the I sc in Na(+) or NH4 (+) containing solutions in a dose-dependent manner and modulated transepithelial Ca(2+) fluxes. On the level of messenger RNA (mRNA), ovine and bovine ruminal epithelium expressed TRPA1, TRPV3, TRPV4, TRPM6, and TRPM7, with any expression of TRPV6 marginal. No bands were detected for TRPV1, TRPV5, or TRPM8. Functional and molecular biological data suggest that the transport of NH4 (+), Na(+), and Ca(2+) across the rumen involves TRP channels, with TRPV3 and TRPA1 emerging as prime candidate genes. TRP channels may also contribute to the transport of NH4 (+) across other epithelia.
Collapse
Affiliation(s)
- Julia Rosendahl
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Hannah S Braun
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Katharina T Schrapers
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Holger Martens
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Friederike Stumpff
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany.
| |
Collapse
|
39
|
Abstract
The transient receptor potential ankyrin 1 (TRPA1) channel is an irritant sensor highly expressed on nociceptive neurons. The clinical use of TRPA1 antagonists is based on the concept that TRPA1 is active during disease states like neuropathic pain. Indeed, in Phase 2a proof-of-concept studies the TRPA1 antagonist GRC17536 has shown efficacy in patients with painful diabetic neuropathy. Moreover, animal studies suggest that the therapeutic value of TRPA1 antagonists extends beyond pain to pruritus, asthma and cough with limited safety concerns. This review provides a comprehensive overview of the patent literature (since 2007) on small-molecule inhibitors of the TRPA1 channel. Despite the clear progress, many unanswered questions remain. Future advancement to Phase 3 studies will assess the real translational potential of this research field.
Collapse
|
40
|
Anaya-Eugenio GD, Rivero-Cruz I, Bye R, Linares E, Mata R. Antinociceptive activity of the essential oil from Artemisia ludoviciana. JOURNAL OF ETHNOPHARMACOLOGY 2016; 179:403-411. [PMID: 26792321 DOI: 10.1016/j.jep.2016.01.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 01/08/2016] [Accepted: 01/09/2016] [Indexed: 05/29/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aerial parts of Artemisia ludoviciana are widely used in Mexico for treating gastrointestinal disorders, painful complaints and diabetes. AIM OF THE STUDY To establish the preclinical efficacy as antinociceptive agent of the essential oil (EO) from the aerial parts of A. ludoviciana using well-known animal models. MATERIALS AND METHODS Acute antinociceptive effect of EO (1, 10, 31.6, 100, and 316mg/kg, i.p.) was evaluated using the hot plate and paw formalin models in mice. The motor effects were assessed with the rota-rod and open field assays. The volatile components obtained by headspace solid phase microextraction (HS-SPME) and hydrodistillation were determined using gas chromatography coupled with mass spectrometry (GC-MS) analysis. RESULTS EO decreased first and second phases of formalin test; in the first stage, the better effect was obtained with the treatment of 316mg/kg but in the second phase, time licking was attenuated at the doses of 31.6, 100 and 316mg/kg. The effectiveness of EO (ED50=25.9mg/kg) for attenuating neurogenic pain was corroborated using the hot plate test. The antinociceptive action of EO was blocked by naloxone suggesting that its mode of action involved an opioid mechanism. Furthermore, EO (316mg/kg) did not affect animal motor and coordination functions when tested by the rota-rod and open field tests. The latter results indicated that the pharmacological effects exerted by EO during the hot plate and formalin test are truly antinociceptive. GC-MS analysis of EO revealed that (±)-camphor, γ-terpineol, 1,8-cineole and borneol were the major volatile compounds of the plant. CONCLUSION EO from A. ludoviciana showed significant antinociceptive effect, which appeared to be partially mediated by the opioid system. These findings could support the long-term use of A. ludoviciana for treating painful complaints in Mexican folk medicine.
Collapse
Affiliation(s)
- Gerardo D Anaya-Eugenio
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, D.F. 04510, Mexico
| | - Isabel Rivero-Cruz
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, D.F. 04510, Mexico
| | - Robert Bye
- Jardín Botánico, Instituto de Biología, Universidad Nacional Autónoma de México, D.F. 04510, Mexico
| | - Edelmira Linares
- Jardín Botánico, Instituto de Biología, Universidad Nacional Autónoma de México, D.F. 04510, Mexico
| | - Rachel Mata
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, D.F. 04510, Mexico.
| |
Collapse
|
41
|
|
42
|
Peng G, Kashio M, Morimoto T, Li T, Zhu J, Tominaga M, Kadowaki T. Plant-Derived Tick Repellents Activate the Honey Bee Ectoparasitic Mite TRPA1. Cell Rep 2015; 12:190-202. [DOI: 10.1016/j.celrep.2015.06.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 05/06/2015] [Accepted: 06/05/2015] [Indexed: 01/12/2023] Open
|
43
|
Cinnamaldehyde is the main mediator of cinnamon extract in mast cell inhibition. Eur J Nutr 2014; 54:1297-309. [DOI: 10.1007/s00394-014-0810-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 11/28/2014] [Indexed: 10/24/2022]
|
44
|
Inhibitory effects of monoterpenes on human TRPA1 and the structural basis of their activity. J Physiol Sci 2014; 64:47-57. [PMID: 24122170 PMCID: PMC3889502 DOI: 10.1007/s12576-013-0289-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/02/2013] [Indexed: 11/16/2022]
Abstract
TRPA1, one of the transient receptor potential channels, has been reported to be involved in nociception and inflammatory pain, suggesting that this molecule could be a promising target for the development of analgesic agents. We screened several monoterpene analogs of camphor, which is known to inhibit human (h) TRPA1, to identify more effective naturally occurring TRPA1 antagonists. Borneol, 2-methylisoborneol, and fenchyl alcohol exhibited higher inhibitory effects on hTRPA1 activity than either camphor or 1,8-cineole. Our results revealed further that the S873, T874, and Y812 residues of hTRPA1 were involved in the inhibitory effects, suggesting that the hydroxyl group in the six-membered ring of the inhibitors may be interacting with these amino acids. Further research on these identified TRPA1 antagonists could lead to new pain therapeutics.
Collapse
|
45
|
Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
|
46
|
Van Gerven L, Alpizar YA, Wouters MM, Hox V, Hauben E, Jorissen M, Boeckxstaens G, Talavera K, Hellings PW. Capsaicin treatment reduces nasal hyperreactivity and transient receptor potential cation channel subfamily V, receptor 1 (TRPV1) overexpression in patients with idiopathic rhinitis. J Allergy Clin Immunol 2014; 133:1332-9, 1339.e1-3. [DOI: 10.1016/j.jaci.2013.08.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/29/2013] [Accepted: 08/19/2013] [Indexed: 01/02/2023]
|
47
|
DeBerry JJ, Schwartz ES, Davis BM. TRPA1 mediates bladder hyperalgesia in a mouse model of cystitis. Pain 2014; 155:1280-1287. [PMID: 24704367 DOI: 10.1016/j.pain.2014.03.023] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 03/13/2014] [Accepted: 03/27/2014] [Indexed: 01/07/2023]
Abstract
Urinary bladder pain is a primary symptom associated with interstitial cystitis/painful bladder syndrome. We used systemic injections of cyclophosphamide (CYP), an alkylating antineoplastic agent, to induce cystitis and examine the roles of 2 channels previously demonstrated to be required for inflammatory visceral hyperalgesia: transient receptor potential vanilloid-1 (TRPV1) and ankyrin-1 (TRPA1). Injection of CYP (100 mg/kg, i.p.) every other day for 5 days was accompanied by bladder edema and urothelial ulceration, but without significant plasma extravasation or infiltration of neutrophils. Toluidine blue staining showed a significant increase in the number of degranulated bladder mast cells after CYP treatment. Despite this mild pathology, CYP-treated mice exhibited bladder hyperalgesia 1 day after the final injection that persisted 7 days later. Although many previous studies of visceral hyperalgesia have reported changes in dorsal root ganglion neuron TRPV1 expression and/or function, we found no change in bladder afferent TRPV1 expression or sensitivity on the basis of the percentage of bladder afferents responsive to capsaicin, including at submaximal concentrations. In contrast, the percentage of bladder afferents expressing functional TRPA1 protein (i.e., those responsive to mustard oil) increased ∼2.5-fold 1 day after CYP treatment, and remained significantly elevated 7 days later. Moreover, bladder hyperalgesia was reversed by acute treatment with the TRPA1 antagonist HC-030031 (300 mg/kg, i.p.). Our results indicate that CYP-induced bladder hyperalgesia can be induced without robust inflammation or changes in primary afferent TRPV1. However, significant changes were observed in TRPA1 expression, and blockade of TRPA1 alleviated CYP-induced bladder hyperalgesia.
Collapse
Affiliation(s)
- Jennifer J DeBerry
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA 15261, USA Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA 15261, USA Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA 15261, USA Department of Anesthesiology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | | | | |
Collapse
|
48
|
Alvarez-Collazo J, Alonso-Carbajo L, López-Medina AI, Alpizar YA, Tajada S, Nilius B, Voets T, López-López JR, Talavera K, Pérez-García MT, Alvarez JL. Cinnamaldehyde inhibits L-type calcium channels in mouse ventricular cardiomyocytes and vascular smooth muscle cells. Pflugers Arch 2014; 466:2089-99. [PMID: 24563220 DOI: 10.1007/s00424-014-1472-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 01/31/2014] [Accepted: 02/04/2014] [Indexed: 02/01/2023]
Abstract
Cinnamaldehyde (CA), a major component of cinnamon, is known to have important actions in the cardiovascular system, including vasorelaxation and decrease in blood pressure. Although CA-induced activation of the chemosensory cation channel TRPA1 seems to be involved in these phenomena, it has been shown that genetic ablation of Trpa1 is insufficient to abolish CA effects. Here, we confirm that CA relaxes rat aortic rings and report that it has negative inotropic and chronotropic effects on isolated mouse hearts. Considering the major role of L-type Ca(2+) channels in the control of the vascular tone and cardiac contraction, we used whole-cell patch-clamp to test whether CA affects L-type Ca(2+) currents in mouse ventricular cardiomyocytes (VCM, with Ca(2+) as charge carrier) and in mesenteric artery smooth muscle cells (VSMC, with Ba(2+) as charge carrier). We found that CA inhibited L-type currents in both cell types in a concentration-dependent manner, with little voltage-dependent effects. However, CA was more potent in VCM than in VSMC and caused opposite effects on the rate of inactivation. We found these divergences to be at least in part due to the use of different charge carriers. We conclude that CA inhibits L-type Ca(2+) channels and that this effect may contribute to its vasorelaxing action. Importantly, our results demonstrate that TRPA1 is not a specific target of CA and indicate that the inhibition of voltage-gated Ca(2+) channels should be taken into account when using CA to probe the pathophysiological roles of TRPA1.
Collapse
Affiliation(s)
- Julio Alvarez-Collazo
- Laboratorio de Electrofisiología, Instituto de Cardiología y Cirugía Cardiovascular, Habana, Cuba
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Redmond WJ, Gu L, Camo M, McIntyre P, Connor M. Ligand determinants of fatty acid activation of the pronociceptive ion channel TRPA1. PeerJ 2014; 2:e248. [PMID: 24516781 PMCID: PMC3913255 DOI: 10.7717/peerj.248] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 12/31/2013] [Indexed: 02/02/2023] Open
Abstract
Background and purpose. Arachidonic acid (AA) and its derivatives are important modulators of cellular signalling. The transient receptor potential cation channel subfamily A, member 1 (TRPA1) is a cation channel with important functions in mediating cellular responses to noxious stimuli and inflammation. There is limited information about the interactions between AA itself and TRPA1, so we investigated the effects of AA and key ethanolamide and amino acid/neurotransmitter derivatives of AA on hTRPA1. Experimental approach. HEK 293 cells expressing hTRPA1 were studied by measuring changes in intracellular calcium ([Ca]i) with a fluorescent dye and by standard whole cell patch clamp recordings. Key results. AA (30 μM) increased fluorescence in hTRPA1 expressing cells by 370% (notional EC50 13 μM). The covalent TRPA1 agonist cinnamaldehyde (300 μM) increased fluorescence by 430% (EC50, 11 μM). Anandamide (230%) and N-arachidonoyl tyrosine (170%) substantially activated hTRPA1 at 30 μM, however, N-arachidonoyl conjugates of glycine and taurine were less effective while N-acyl conjugates of 5-HT did not affect hTRPA1. Changing the acyl chain length or the number and position of double bonds reduced fatty acid efficacy at hTRPA1. Mutant hTRPA1 (Cys621, Cys641 and Cys665 changed to Ser) could be activated by AA (100 μM, 40% of wild type) but not by cinnamaldehyde (300 μM). Conclusions and implications. AA is a more potent activator of TRPA1 than its ethanolamide or amino acid/neurotransmitter derivatives and acts via a mechanism distinct from that of cinnamaldehyde, further underscoring the likelyhood of multiple pharmacologically exploitable sites on hTRPA1.
Collapse
Affiliation(s)
| | - Liuqiong Gu
- Department of Pharmacology, University of Melbourne , Parkville , Victoria , Australia
| | - Maxime Camo
- Australian School of Advanced Medicine, Macquarie University , NSW , Australia
| | - Peter McIntyre
- Department of Pharmacology, University of Melbourne , Parkville , Victoria , Australia ; Health Innovations Research Institute and School of Medical Sciences, RMIT University , Melbourne , Victoria , Australia
| | - Mark Connor
- Australian School of Advanced Medicine, Macquarie University , NSW , Australia
| |
Collapse
|
50
|
Abstract
The use of medicinal plants or other naturally derived products to relieve illness can be traced back over several millennia, and these natural products are still extensively used nowadays. Studies on natural products have, over the years, enormously contributed to the development of therapeutic drugs used in modern medicine. By means of the use of these substances as selective agonists, antagonists, enzyme inhibitors or activators, it has been possible to understand the complex function of many relevant targets. For instance, in an attempt to understand how pepper species evoke hot and painful actions, the pungent and active constituent capsaicin (from Capsicum sp.) was isolated in 1846 and the receptor for the biological actions of capsaicin was cloned in 1997, which is now known as TRPV1 (transient receptor potential vanilloid 1). Thus, TRPV1 agonists and antagonists have currently been tested in order to find new drug classes to treat different disorders. Indeed, the transient receptor potential (TRP) proteins are targets for several natural compounds, and antagonists of TRPs have been synthesised based on the knowledge of naturally derived products. In this context, this chapter focuses on naturally derived compounds (from plants and animals) that are reported to be able to modulate TRP channels. To clarify and make the understanding of the modulatory effects of natural compounds on TRPs easier, this chapter is divided into groups according to TRP subfamilies: TRPV (TRP vanilloid), TRPA (TRP ankyrin), TRPM (TRP melastatin), TRPC (TRP canonical) and TRPP (TRP polycystin). A general overview on the naturally derived compounds that modulate TRPs is depicted in Table 1.
Collapse
Affiliation(s)
- Flavia Carla Meotti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, SP, Brazil
| | | | | |
Collapse
|