1
|
Socała K, Jakubiec M, Abram M, Mlost J, Starowicz K, Kamiński RM, Ciepiela K, Andres-Mach M, Zagaja M, Metcalf CS, Zawadzki P, Wlaź P, Kamiński K. TRPV1 channel in the pathophysiology of epilepsy and its potential as a molecular target for the development of new antiseizure drug candidates. Prog Neurobiol 2024; 240:102634. [PMID: 38834133 DOI: 10.1016/j.pneurobio.2024.102634] [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: 10/25/2023] [Revised: 04/26/2024] [Accepted: 05/28/2024] [Indexed: 06/06/2024]
Abstract
Identification of transient receptor potential cation channel, subfamily V member 1 (TRPV1), also known as capsaicin receptor, in 1997 was a milestone achievement in the research on temperature sensation and pain signalling. Very soon after it became evident that TRPV1 is implicated in a wide array of physiological processes in different peripheral tissues, as well as in the central nervous system, and thereby could be involved in the pathophysiology of numerous diseases. Increasing evidence suggests that modulation of TRPV1 may also affect seizure susceptibility and epilepsy. This channel is localized in brain regions associated with seizures and epilepsy, and its overexpression was found both in animal models of seizures and in brain samples from epileptic patients. Moreover, modulation of TRPV1 on non-neuronal cells (microglia, astrocytes, and/or peripheral immune cells) may have an impact on the neuroinflammatory processes that play a role in epilepsy and epileptogenesis. In this paper, we provide a comprehensive and critical overview of currently available data on TRPV1 as a possible molecular target for epilepsy management, trying to identify research gaps and future directions. Overall, several converging lines of evidence implicate TRPV1 channel as a potentially attractive target in epilepsy research but more studies are needed to exploit the possible role of TRPV1 in seizures/epilepsy and to evaluate the value of TRPV1 ligands as candidates for new antiseizure drugs.
Collapse
Affiliation(s)
- Katarzyna Socała
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, Lublin PL 20-033, Poland.
| | - Marcin Jakubiec
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland
| | - Michał Abram
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland
| | - Jakub Mlost
- Department of Neurochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, Cracow PL 31-343, Poland
| | - Katarzyna Starowicz
- Department of Neurochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, Cracow PL 31-343, Poland
| | - Rafał M Kamiński
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland
| | - Katarzyna Ciepiela
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland; Selvita S.A., Bobrzyńskiego 14, Cracow PL 30-348, Poland
| | - Marta Andres-Mach
- Department of Experimental Pharmacology, Institute of Rural Health, Jaczewskiego 2, Lublin PL 20-090, Poland
| | - Mirosław Zagaja
- Department of Experimental Pharmacology, Institute of Rural Health, Jaczewskiego 2, Lublin PL 20-090, Poland
| | - Cameron S Metcalf
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Przemysław Zawadzki
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland
| | - Piotr Wlaź
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, Lublin PL 20-033, Poland
| | - Krzysztof Kamiński
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, Cracow PL 30-688, Poland
| |
Collapse
|
2
|
Zeng J, Lu Y, Chu H, Lu L, Chen Y, Ji K, Lin Y, Li J, Wang S. Research trends and frontier hotspots of TRPV1 based on bibliometric and visualization analyses. Heliyon 2024; 10:e24153. [PMID: 38293347 PMCID: PMC10827456 DOI: 10.1016/j.heliyon.2024.e24153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/30/2023] [Accepted: 01/04/2024] [Indexed: 02/01/2024] Open
Abstract
Background Transient receptor potential vanilloid type1 (TRPV1) is a non-selective cation channel with multiple activation mechanisms, which has received increasing attention since it was first cloned in 1997. Methods We used bibliometric and visualization analyses to evaluate the theme trends and knowledge structure of TRPV1 research-papers on TRPV1 from 2002 to 2022 obtained from the Web of Science Core Collection. VOSviewer and CiteSpace were used to analyze authors, institutions, countries, co-cited references, and keywords. Results A total of 7413 papers were included. The main research area of TRPV1 was neuroscience; the most published country was the United States, and the University of California, San Francisco, had the highest centrality. Two major collaborative sub-networks were formed between the authors. The distribution of keywords shows that TRPV1 was initially studied extensively, and the recent studies focused on TRPV1 structure and diseases. "Oxidative stress," "TRPV1 structure," "cancer," and "model" have been the research hotspots in recent years. Conclusions This research provides valuable information for the study of TRPV1. Disease research was focused on pain, cancer, and neurodegenerative diseases. Both agonists and antagonists of TRPV1 are gradually being used in clinical practice, and acupuncture was effective in treating TRPV1-mediated inflammatory pain. TRPV1 is involved in classical endogenous cannabis system signaling, and new signaling pathways continue to be revealed.
Collapse
Affiliation(s)
- Jingchun Zeng
- Rehabilitation Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yiqian Lu
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Hui Chu
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Liming Lu
- Clinical Research and Data Center, South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yuexuan Chen
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Kaisong Ji
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yeze Lin
- Rehabilitation Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Jingjing Li
- Bao'an Traditional Chinese Medicine Hospital//Seventh Clinical Medical College of Guangzhou University of Traditional Chinese Medicine, Shenzhen, Guangdong, China
| | - Shuxin Wang
- Rehabilitation Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| |
Collapse
|
3
|
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
|
4
|
Pidoux L, Delanoe K, Barbier J, Marchand F, Lingueglia E, Deval E. Single Subcutaneous Injection of Lysophosphatidyl-Choline Evokes ASIC3-Dependent Increases of Spinal Dorsal Horn Neuron Activity. Front Mol Neurosci 2022; 15:880651. [PMID: 35774865 PMCID: PMC9239072 DOI: 10.3389/fnmol.2022.880651] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/05/2022] [Indexed: 11/24/2022] Open
Abstract
Lysophosphatidyl-choline (LPC), a member of the phospholipid family, is an emerging player in pain. It is known to modulate different pain-related ion channels, including Acid-Sensing Ion Channel 3 (ASIC3), a cationic channel mainly expressed in peripheral sensory neurons. LPC potentiates ASIC3 current evoked by mild acidifications, but can also activate the channel at physiological pH. Very recently, LPC has been associated to chronic pain in patients suffering from fibromyalgia or osteoarthritis. Accordingly, repetitive injections of LPC within mouse muscle or joint generate both persistent pain-like and anxiety-like behaviors in an ASIC3-dependent manner. LPC has also been reported to generate acute pain behaviors when injected intraplantarly in rodents. Here, we explore the mechanism of action of a single cutaneous injection of LPC by studying its effects on spinal dorsal horn neurons. We combine pharmacological, molecular and functional approaches including in vitro patch clamp recordings and in vivo recordings of spinal neuronal activity. We show that a single cutaneous injection of LPC exclusively affects the nociceptive pathway, inducing an ASIC3-dependent sensitization of nociceptive fibers that leads to hyperexcitabilities of both high threshold (HT) and wide dynamic range (WDR) spinal neurons. ASIC3 is involved in LPC-induced increase of WDR neuron’s windup as well as in WDR and HT neuron’s mechanical hypersensitivity, and it participates, together with TRPV1, to HT neuron’s thermal hypersensitivity. The nociceptive input induced by a single LPC cutaneous rather induces short-term sensitization, contrary to previously described injections in muscle and joint. If the effects of peripheral LPC on nociceptive pathways appear to mainly depend on peripheral ASIC3 channels, their consequences on pain may also depend on the tissue injected. Our findings contribute to a better understanding of the nociceptive signaling pathway activated by peripheral LPC via ASIC3 channels, which is an important step regarding the ASIC3-dependent roles of this phospholipid in acute and chronic pain conditions.
Collapse
Affiliation(s)
- Ludivine Pidoux
- Université Côte d’Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, Valbonne, France
| | - Kevin Delanoe
- Université Côte d’Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, Valbonne, France
| | - Julie Barbier
- Université Clermont Auvergne, Inserm U1107 Neuro-Dol, Pharmacologie Fondamentale et Clinique de la Douleur, Clermont-Ferrand, France
| | - Fabien Marchand
- Université Clermont Auvergne, Inserm U1107 Neuro-Dol, Pharmacologie Fondamentale et Clinique de la Douleur, Clermont-Ferrand, France
| | - Eric Lingueglia
- Université Côte d’Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, Valbonne, France
| | - Emmanuel Deval
- Université Côte d’Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, Valbonne, France
- *Correspondence: Emmanuel Deval,
| |
Collapse
|
5
|
Fujino T. Transient Receptor Potential Melastatin 8, a sensor of cold temperatures mediates expression of cyclin-dependent kinase inhibitor, p21/Cip1, a regulator of epidermal cell proliferation. J Toxicol Sci 2022; 47:117-123. [PMID: 35236803 DOI: 10.2131/jts.47.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Transient Receptor Potential Melastatin 8 (TRPM8) is a calcium-permeable, non-selective cation channel of the transient receptor potential superfamily, required for the transduction of moderate cold temperatures. TRPM8 is also known to regulate proliferation of prostate, pancreatic, breast, and melanoma carcinoma cells. Here, we examined a key factor in the regulation of TRPM8-mediated proliferation of epidermal cells, which are directly affected by cold temperatures. Experiments involving knockdown and ectopic expression of TRPM8 in normal keratinocyte HaCaT and squamous carcinoma SAS cells suggest that TRPM8 inhibits cell proliferation by upregulating the expression of cyclin-dependent inhibitor p21/Cip1. Whereas these findings were observed in the absence of an endogenous agonists, additions of the synthetic TRPM8 agonist icilin reduced DNA synthesis in HaCaT cells but stimulated that in SAS cells by altering p21/Cip1 levels in a TRPM8-independent manner, indicating that icilin poses a risk of stimulating carcinoma cell proliferation. Unexpectedly, the TRPM8 blocker, used for the treatment of overactive bladder and bladder pain, N-(3-aminopropyl)-2-{[(3-methylphenyl) methyl] oxy}-N-(2-thienylmethyl) benzamide hydrochloride salt (AMTB) reduced DNA synthesis by upregulating p21/Cip1 expression. However, another TRPM8 blocker, N-(4-Tertiarybutylphenyl)-4-(3-chloropyridin- 2-yl) tetrahydropyrazine-1 (2H)-carbox-amide (BCTC), stimulated DNA synthesis by downregulating p21/Cip1 expression, indicating that it may pose a risk of carcinogenesis associated with dysregulated cell cycles when used to treat overactive bladder and bladder pain.
Collapse
Affiliation(s)
- Tomofumi Fujino
- Department of Hygiene and Health Sciences, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences
| |
Collapse
|
6
|
Iraci N, Ostacolo C, Medina-Peris A, Ciaglia T, Novoselov AM, Altieri A, Cabañero D, Fernandez-Carvajal A, Campiglia P, Gomez-Monterrey I, Bertamino A, Kurkin AV. In Vitro and In Vivo Pharmacological Characterization of a Novel TRPM8 Inhibitor Chemotype Identified by Small-Scale Preclinical Screening. Int J Mol Sci 2022; 23:ijms23042070. [PMID: 35216186 PMCID: PMC8877448 DOI: 10.3390/ijms23042070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
Transient receptor potential melastatin type 8 (TRPM8) is a target for the treatment of different physio-pathological processes. While TRPM8 antagonists are reported as potential drugs for pain, cancer, and inflammation, to date only a limited number of chemotypes have been investigated and thus a limited number of compounds have reached clinical trials. Hence there is high value in searching for new TRPM8 antagonistic to broaden clues to structure-activity relationships, improve pharmacological properties and explore underlying molecular mechanisms. To address this, the EDASA Scientific in-house molecular library has been screened in silico, leading to identifying twenty-one potentially antagonist compounds of TRPM8. Calcium fluorometric assays were used to validate the in-silico hypothesis and assess compound selectivity. Four compounds were identified as selective TRPM8 antagonists, of which two were dual-acting TRPM8/TRPV1 modulators. The most potent TRPM8 antagonists (BB 0322703 and BB 0322720) underwent molecular modelling studies to highlight key structural features responsible for drug–protein interaction. The two compounds were also investigated by patch-clamp assays, confirming low micromolar potencies. The most potent compound (BB 0322703, IC50 1.25 ± 0.26 μM) was then profiled in vivo in a cold allodinya model, showing pharmacological efficacy at 30 μM dose. The new chemotypes identified showed remarkable pharmacological properties paving the way to further investigations for drug discovery and pharmacological purposes.
Collapse
Affiliation(s)
- Nunzio Iraci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy;
| | - Carmine Ostacolo
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (C.O.); (I.G.-M.)
| | - Alicia Medina-Peris
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Tania Ciaglia
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
| | - Anton M. Novoselov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
| | - Andrea Altieri
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
- EDASA Scientific srls, Via Stingi 37, 66050 San Salvo, Italy
| | - David Cabañero
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Asia Fernandez-Carvajal
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
| | - Isabel Gomez-Monterrey
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (C.O.); (I.G.-M.)
| | - Alessia Bertamino
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
- Correspondence: (A.B.); (A.V.K.)
| | - Alexander V. Kurkin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
- Correspondence: (A.B.); (A.V.K.)
| |
Collapse
|
7
|
Di Donato M, Ostacolo C, Giovannelli P, Di Sarno V, Monterrey IMG, Campiglia P, Migliaccio A, Bertamino A, Castoria G. Therapeutic potential of TRPM8 antagonists in prostate cancer. Sci Rep 2021; 11:23232. [PMID: 34853378 PMCID: PMC8636514 DOI: 10.1038/s41598-021-02675-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 11/22/2021] [Indexed: 12/27/2022] Open
Abstract
Transient receptor potential melastatin-8 (TRPM8) represents an emerging target in prostate cancer, although its mechanism of action remains unclear. Here, we have characterized and investigated the effects of TRPM8 modulators in prostate cancer aggressiveness disclosing the molecular mechanism underlying their biological activity. Patch-clamp and calcium fluorometric assays were used to characterize the synthesized compounds. Androgen-stimulated prostate cancer-derived cells were challenged with the compounds and the DNA synthesis was investigated in a preliminary screening. The most effective compounds were then employed to inhibit the pro-metastatic behavior of in various PC-derived cells, at different degree of malignancy. The effect of the compounds was then assayed in prostate cancer cell-derived 3D model and the molecular targets of selected compounds were lastly identified using transcriptional and non-transcriptional reporter assays. TRPM8 antagonists inhibit the androgen-dependent prostate cancer cell proliferation, migration and invasiveness. They are highly effective in reverting the androgen-induced increase in prostate cancer cell spheroid size. The compounds also revert the proliferation of castrate-resistant prostate cancer cells, provided they express the androgen receptor. In contrast, no effects were recorded in prostate cancer cells devoid of the receptor. Selected antagonists interfere in non-genomic androgen action and abolish the androgen-induced androgen receptor/TRPM8 complex assembly as well as the increase in intracellular calcium levels in prostate cancer cells. Our results shed light in the processes controlling prostate cancer progression and make the transient receptor potential melastatin-8 as a ‘druggable’ target in the androgen receptor-expressing prostate cancers.
Collapse
Affiliation(s)
- Marzia Di Donato
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Carmine Ostacolo
- Department of Pharmacy, University Federico II of Naples, Via D. Montesano 49, 80131, Naples, Italy
| | - Pia Giovannelli
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Veronica Di Sarno
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy
| | - Isabel M Gomez Monterrey
- Department of Pharmacy, University Federico II of Naples, Via D. Montesano 49, 80131, Naples, Italy
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy
| | - Antimo Migliaccio
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Alessia Bertamino
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy.
| | - Gabriella Castoria
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy.
| |
Collapse
|
8
|
Satpute Janve V, Anderson LL, Bahceci D, Hawkins NA, Kearney JA, Arnold JC. The Heat Sensing Trpv1 Receptor Is Not a Viable Anticonvulsant Drug Target in the Scn1a +/- Mouse Model of Dravet Syndrome. Front Pharmacol 2021; 12:675128. [PMID: 34079465 PMCID: PMC8165383 DOI: 10.3389/fphar.2021.675128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/27/2021] [Indexed: 11/13/2022] Open
Abstract
Cannabidiol has been approved for the treatment of drug-resistant childhood epilepsies including Dravet syndrome (DS). Although the mechanism of anticonvulsant action of cannabidiol is unknown, emerging data suggests involvement of the transient receptor potential cation channel subfamily V member 1 (Trpv1). Pharmacological and genetic studies in conventional seizure models suggest Trpv1 is a novel anticonvulsant target. However, whether targeting Trpv1 is anticonvulsant in animal models of drug-resistant epilepsies is not known. Thus, we examined whether Trpv1 affects the epilepsy phenotype of the F1.Scn1a +/- mouse model of DS. We found that cortical Trpv1 mRNA expression was increased in seizure susceptible F1.Scn1a +/- mice with a hybrid genetic background compared to seizure resistant 129.Scn1a +/- mice isogenic on 129S6/SvEvTac background, suggesting Trpv1 could be a genetic modifier. Previous studies show functional loss of Trpv1 is anticonvulsant. However, Trpv1 selective antagonist SB-705498 did not affect hyperthermia-induced seizure threshold, frequency of spontaneous seizures or survival of F1.Scn1a +/- mice. Surprisingly, Trpv1 deletion had both pro- and anti-seizure effects. Trpv1 deletion did not affect hyperthermia-induced seizure temperature thresholds of F1.Scn1a +/- ; Trpv1 +/- at P14-16 but was proconvulsant at P18 as it reduced seizure temperature thresholds. Conversely, Trpv1 deletion did not alter the frequency of spontaneous seizures but reduced their severity. These results suggest that Trpv1 is a modest genetic modifier of spontaneous seizure severity in the F1.Scn1a +/- model of DS. However, the opposing pro- and anti-seizure effects of Trpv1 deletion and the lack of effects of Trpv1 inhibition suggest that Trpv1 is unlikely a viable anticonvulsant drug target in DS.
Collapse
Affiliation(s)
- Vaishali Satpute Janve
- Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, Sydney, NSW, Australia.,Discipline of Pharmacology, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Lyndsey L Anderson
- Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, Sydney, NSW, Australia.,Discipline of Pharmacology, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Dilara Bahceci
- Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, Sydney, NSW, Australia.,Discipline of Pharmacology, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Nicole A Hawkins
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Jennifer A Kearney
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Jonathon C Arnold
- Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, Sydney, NSW, Australia.,Discipline of Pharmacology, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
9
|
Hwang HS, Park IY, Hong JI, Kim JR, Kim HA. Comparison of joint degeneration and pain in male and female mice in DMM model of osteoarthritis. Osteoarthritis Cartilage 2021; 29:728-738. [PMID: 33609695 DOI: 10.1016/j.joca.2021.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 01/13/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE While the prevalence of radiographic and symptomatic osteoarthritis (OA) is higher in women, male mice are more frequently used in animal experiments to explore its pathogenesis or drug efficacy. In this study, we examined whether sexual dimorphism affects pain and joint degeneration in destabilization of the medial meniscus (DMM) mouse model. METHODS DMM or sham surgery was performed on the knee of male and female C57BL/6 mice. Joint damage was assessed by safranin O staining and scored using the Osteoarthritis Research Society International (OARSI) scoring system. Von Frey hair, incapacitance, and rotarod tests were conducted to measure joint pain. The analgesic effect of capsazepine (CPZ), a TRPV1 antagonist, was compared between male and female mice. RESULTS Histology and OARSI scoring analysis showed that cartilage degeneration developed, and progressed in both male and female DMM groups, however, damage was less severe in females at the late stage of OA. Pain behavior, as measured by mechanical allodynia, was displayed for longer in male DMM mice compared to females. Incapacitance data showed that CPZ significantly reduced DMM-induced pain in male mice but not in female mice. Immunofluorescence microscopy analysis demonstrated that DMM surgery increased the expression of TRPV1 in both female and male dorsal root ganglion (DRG). Injection of CPZ significantly suppressed TRPV1 expression in the DRG of male mice only. CONCLUSION Joint damage develops comparably in both female and male mice after DMM although it progresses less in females. There was a subtle sex difference in pain behaviors and analgesic efficacy of a TRPV1 antagonist, which was accompanied by a differential regulation of TPRV1.
Collapse
Affiliation(s)
- H S Hwang
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - I Y Park
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J I Hong
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J R Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - H A Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea.
| |
Collapse
|
10
|
Ruthenium red attenuates brown adipose tissue thermogenesis in rats. J Therm Biol 2020; 95:102779. [PMID: 33454027 DOI: 10.1016/j.jtherbio.2020.102779] [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: 07/10/2020] [Revised: 11/04/2020] [Accepted: 11/06/2020] [Indexed: 11/21/2022]
Abstract
Ruthenium red (RR) is a non-selective antagonist of the temperature-sensitive Transient Receptor Potential (TRP) channels and it is an important pharmacological tool in thermoregulatory research. However, the effect of RR on thermoeffector activity is not well established. Here we evaluated the effect of RR on cold-defense thermoeffectors induced by menthol, an agonist of the cold-sensitive TRPM8 channel. Adult male Wistar rats were used. Epidermal treatment with menthol raised deep body temperature due to an increase in oxygen consumption (an index of thermogenesis), a reduction in heat loss index (an index of cutaneous vasoconstriction), and an induction in warmth-seeking behavior in a two-temperature choice apparatus. Pretreatment with RR attenuated the menthol-induced increase in deep body temperature and oxygen consumption, but it did not affect heat loss index and warmth-seeking behavior. To stimulate brown adipose tissue thermogenesis, rats were treated with CL 316,243, a potent and selective β3-adrenoceptor agonist. CL 316,243 increased deep body temperature, which was attenuated by RR pretreatment. We conclude that RR reduces brown adipose tissue thermogenesis induced by menthol and CL 316,243, independent of effects at the thermal sensor level (i.e., TRPM8).
Collapse
|
11
|
Abstract
The transient receptor potential vanilloid-1 (TRPV1) is a non-specific cation channel known for its sensitivity to pungent vanilloid compound (i.e. capsaicin) and noxious stimuli, including heat, low pH or inflammatory mediators. TRPV1 is found in the somatosensory system, particularly primary afferent neurons that respond to damaging or potentially damaging stimuli (nociceptors). Stimulation of TRPV1 evokes a burning sensation, reflecting a central role of the channel in pain. Pharmacological and genetic studies have validated TRPV1 as a therapeutic target in several preclinical models of chronic pain, including cancer, neuropathic, postoperative and musculoskeletal pain. While antagonists of TRPV1 were found to be a valuable addition to the pain therapeutic toolbox, their clinical use has been limited by detrimental side effects, such as hyperthermia. In contrast, capsaicin induces a prolonged defunctionalisation of nociceptors and thus opened the door to the development of a new class of therapeutics with long-lasting pain-relieving effects. Here we review the list of TRPV1 agonists undergoing clinical trials for chronic pain management, and discuss new indications, formulations or combination therapies being explored for capsaicin. While the analgesic pharmacopeia for chronic pain patients is ancient and poorly effective, modern TRPV1-targeted drugs could rapidly become available as the next generation of analgesics for a broad spectrum of pain conditions.
Collapse
Affiliation(s)
- Mircea Iftinca
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Manon Defaye
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada
| | - Christophe Altier
- Department of Physiology and Pharmacology, Inflammation Research Network-Snyder Institute for Chronic Diseases and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, Alberta, T2N 4N1, Canada.
| |
Collapse
|
12
|
Pharmacological and genetic inhibition of TRPC6-induced gene transcription. Eur J Pharmacol 2020; 886:173357. [PMID: 32758574 DOI: 10.1016/j.ejphar.2020.173357] [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: 04/15/2020] [Revised: 07/04/2020] [Accepted: 07/08/2020] [Indexed: 11/20/2022]
Abstract
Transient receptor potential canonical-6 (TRPC6) channels are non-selective cation channels that can be activated by hyperforin, a constituent of Hypericum perforatum. TRPC6 activation has been linked to a variety of biological functions and pathologies, including focal segmental glomerulosclerosis and the development of various tumor entities. Thus, TRPC6 is an interesting drug target, and a specific pharmacological inhibitor would be very valuable for both basic research and therapy of TRPC6-mediated human pathologies. Here, we assessed the biological activity of various TRP channel inhibitors on hyperforin-stimulated TRPC6 channel signaling. Hyperforin stimulates the activity of the transcription factor AP-1 via TRPC6. Expression experiments involving a TRPC6-specific small hairpin RNA confirmed that hyperforin-induced gene transcription requires TRPC6. Cellular AP-1 activity was measured to assess which compound interrupted the TRPC6-induced intracellular signaling cascade. The results show that the compounds 2-APB, clotrimazole, BCTC, TC-I 2014, SAR 7334, and larixyl acetate blocked TRPC6-mediated activation of AP-1. In contrast, the TRPM8-specific inhibitor RQ-00203078 did not inhibit TRPC6-mediated signaling. 2-APB, clotrimazole, BCTC, and TC-I 2014 are broad-spectrum Ca2+ channel inhibitors, while SAR 7334 and larixyl acetate have been proposed to function as rather TRPC6-specific inhibitors. In this study it is shown that both compounds, in addition to inhibiting TRPC6-induced signaling, completely abolished pregnenolone sulfate-mediated signaling via TRPM3 channels. Thus, SAR 7334 and larixyl acetate are not TRPC6-specific inhibitors.
Collapse
|
13
|
Xiong M, Guo M, Huang D, Li J, Zhou Y. TRPV1 genetic polymorphisms and risk of COPD or COPD combined with PH in the Han Chinese population. Cell Cycle 2020; 19:3066-3073. [PMID: 33103544 PMCID: PMC7714492 DOI: 10.1080/15384101.2020.1831246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
COPD is a common chronic disease with genetic predisposition. TRPV1 is mainly expressed in peripheral neuron which widely exists in entire respiratory tract. In present study, we aimed to study the relationship between single nucleotide polymorphisms (SNPs) of transient receptor potential vanilloid-1 (TRPV1) and the risk of chronic obstructive pulmonary disease (COPD) or COPD combined with pulmonary hypertension (PH) in Chinese Han population. A total of 1019 individuals, including 506 healthy volunteers and 513 COPD patients (150 patients combined with PH among them) were recruited in this study. Genomic DNA were extracted and sequenced. Genotype and allele frequencies of the TRPV1 SNPs among COPD, COPD combined with PH and control groups were compared. Then, the association of TRPV1 SNPs and smoking status were analyzed. Genotype frequencies of SNP rs3744683 had a significant difference in COPD patients with PH patients compared with control (p = 0.006) or COPD patients without PH patients (p = 0.016). Likewise, SNP rs3744683 was remarkedly associated with the risk of COPD (p = 0.004) in current-smoker groups which phenomenon was not observed in nonsmoker or former-smoker groups. Compared with the control group, there was a significant difference for the distribution of SNP rs4790521 alleles in the COPD group (p = 0.041). For further, logical regression analysis showed that SNP rs3744683 genotype of “TC” was a protective factor for PH in COPD patients compared with the genotype of “TT” (OR = 0.364, 95%CI = 0.159–0.829, p = 0.016). Our findings firstly revealed the relevance between TRPV1 SNPs and the risk for COPD/COPD combined with PH.
Collapse
Affiliation(s)
- Mingmei Xiong
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Meihua Guo
- Department of Respiration, Guangzhou Chest Hospital , Guangzhou, China
| | - Dongjian Huang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Jing Li
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Yan Zhou
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| |
Collapse
|
14
|
Huffer KE, Aleksandrova AA, Jara-Oseguera A, Forrest LR, Swartz KJ. Global alignment and assessment of TRP channel transmembrane domain structures to explore functional mechanisms. eLife 2020; 9:e58660. [PMID: 32804077 PMCID: PMC7431192 DOI: 10.7554/elife.58660] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/31/2020] [Indexed: 12/20/2022] Open
Abstract
The recent proliferation of published TRP channel structures provides a foundation for understanding the diverse functional properties of this important family of ion channel proteins. To facilitate mechanistic investigations, we constructed a structure-based alignment of the transmembrane domains of 120 TRP channel structures. Comparison of structures determined in the absence or presence of activating stimuli reveals similar constrictions in the central ion permeation pathway near the intracellular end of the S6 helices, pointing to a conserved cytoplasmic gate and suggesting that most available structures represent non-conducting states. Comparison of the ion selectivity filters toward the extracellular end of the pore supports existing hypotheses for mechanisms of ion selectivity. Also conserved to varying extents are hot spots for interactions with hydrophobic ligands, lipids and ions, as well as discrete alterations in helix conformations. This analysis therefore provides a framework for investigating the structural basis of TRP channel gating mechanisms and pharmacology, and, despite the large number of structures included, reveals the need for additional structural data and for more functional studies to establish the mechanistic basis of TRP channel function.
Collapse
Affiliation(s)
- Katherine E Huffer
- Molecular Physiology and Biophysics Section, Porter Neuroscience Research Center, National Institute of Neurological Diseases and Stroke, National Institutes of HealthBethesdaUnited States
| | - Antoniya A Aleksandrova
- Computational Structural Biology Section, Porter Neuroscience Research Center, National Institute of Neurological Diseases and Stroke, National Institutes of HealthBethesdaUnited States
| | - Andrés Jara-Oseguera
- Molecular Physiology and Biophysics Section, Porter Neuroscience Research Center, National Institute of Neurological Diseases and Stroke, National Institutes of HealthBethesdaUnited States
| | - Lucy R Forrest
- Computational Structural Biology Section, Porter Neuroscience Research Center, National Institute of Neurological Diseases and Stroke, National Institutes of HealthBethesdaUnited States
| | - Kenton J Swartz
- Molecular Physiology and Biophysics Section, Porter Neuroscience Research Center, National Institute of Neurological Diseases and Stroke, National Institutes of HealthBethesdaUnited States
| |
Collapse
|
15
|
Silva H. Current Knowledge on the Vascular Effects of Menthol. Front Physiol 2020; 11:298. [PMID: 32317987 PMCID: PMC7154148 DOI: 10.3389/fphys.2020.00298] [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: 12/29/2019] [Accepted: 03/16/2020] [Indexed: 12/13/2022] Open
Abstract
Menthol is a monoterpene alcohol, widely used in several food and healthcare products for its particular odor and flavor. For some decades, menthol has been known to act on the vasculature directly in the endothelium and vascular smooth muscle, with recent studies showing that it also evokes an indirect vascular response via sensory fibers. The mechanisms underlying menthol's vascular action are complex due to the diversity of cellular targets, to the interplay between signaling pathways and to the variability in terms of response. Menthol can evoke either a perfusion increase or decrease in vivo in different vascular territories, an observation that warrants a critical discussion. Menthol vascular actions in vivo seem to depend on whether the vascular territory under analysis has been directly provoked with menthol or is located deep/distant to the application site. Menthol increases perfusion of directly provoked skin regions due to a complex interplay of increased nitric oxide (NO), endothelium-derived hyperpolarization factors (EDHFs) and sensory nerve responses. In non-provoked vascular beds menthol decreases perfusion which might be attributed to heat-conservation sympathetically-mediated vasoconstriction, although an increase in tissue evaporative heat loss due the formulation ethanol may also play a role. There is increasing evidence that several of menthol's cellular targets are involved in cardiovascular diseases, such as hypertension. Thus menthol and pharmacologically-similar drugs can play important preventive and therapeutic roles, which merits further investigation.
Collapse
Affiliation(s)
- Henrique Silva
- CBIOS - Universidade Lusófona’s Research Center for Biosciences and Health Technologies, Lisboa, Portugal
- Pharmacol. Sc Depart - Universidade de Lisboa, Faculty of Pharmacy, Lisboa, Portugal
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| |
Collapse
|
16
|
Elevation of Transient Receptor Potential Vanilloid 1 Function in the Lateral Habenula Mediates Aversive Behaviors in Alcohol-withdrawn Rats. Anesthesiology 2020; 130:592-608. [PMID: 30676422 DOI: 10.1097/aln.0000000000002615] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
WHAT WE ALREADY KNOW ABOUT THIS TOPIC Chronic alcohol use and withdrawal leads to increased pain perception, anxiety, and depression. These aberrant behaviors are accompanied by increased excitatory glutamatergic transmission to, and activity of, the lateral habenula neurons.Vanilloid type 1, or TRPV1, channels are expressed in the habenula and they facilitate glutamatergic transmission. Whether TRPV1 channel plays a role in habenula hyperactivity is not clear. WHAT THIS ARTICLE TELLS US THAT IS NEW Glutamatergic transmission in the lateral habenula was inhibited by TRPV1 channel antagonists. In vivo, local administration of TRPV1 antagonists into the lateral habenula attenuated hyperalgesia, anxiety, and relapse-like drinking in rats who chronically consumed alcohol.The data suggest that enhanced TRPV1 channel function during withdrawal may contribute to aberrant behavior that promotes relapse alcohol consumption. BACKGROUND Recent rat studies indicate that alcohol withdrawal can trigger a negative emotional state including anxiety- and depression-like behaviors and hyperalgesia, as well as elevated glutamatergic transmission and activity in lateral habenula neurons. TRPV1, a vanilloid receptor expressed in the habenula, is involved in pain, alcohol dependence, and glutamatergic transmission. The authors therefore hypothesized that TRPV1 contributes to the changes in both the behavioral phenotypes and the habenula activity in alcohol-withdrawn rats. METHODS Adult male Long-Evans rats (n = 110 and 280 for electrophysiology and behaviors, respectively), randomly assigned into the alcohol and water (Naïve) groups, were trained to consume either alcohol or water-only using an intermittent-access procedure. Slice electrophysiology was used to measure spontaneous excitatory postsynaptic currents and firing of lateral habenula neurons. The primary outcome was the change in alcohol-related behaviors and lateral habenula activity induced by pharmacologic manipulation of TRPV1 activity. RESULTS The basal frequency of spontaneous excitatory postsynaptic currents and firing of lateral habenula neurons in alcohol-withdrawn rats was significantly increased. The TRPV1 antagonist capsazepine (10 µM) induced a stronger inhibition on spontaneous excitatory postsynaptic currents (mean ± SD; by 26.1 ± 27.9% [n = 11] vs. 6.7 ± 18.6% [n = 17], P = 0.027) and firing (by 23.4 ± 17.6% [n = 9] vs. 11.9 ± 16.3% [n = 12], P = 0.025) in Withdrawn rats than Naive rats. By contrast, the TRPV1 agonist capsaicin (3 μM) produced a weaker potentiation in Withdrawn than Naïve rats (spontaneous excitatory postsynaptic currents: by 203.6 ± 124.7% [n = 20] vs. 415.2 ± 424.3% [n = 15], P < 0.001; firing: 38.1 ± 14.7% [n = 11] vs. 73.9 ± 41.9% [n = 11], P < 0.001). Conversely, capsaicin's actions in Naïve but not in Withdrawn rats were significantly attenuated by the pretreatment of TRPV1 endogenous agonist N-Oleoyldopamine. In Withdrawn rats, intra-habenula infusion of TRPV1 antagonists attenuated hyperalgesia and anxiety-like behaviors, decreased alcohol consumption upon resuming drinking, and elicited a conditioned place preference. CONCLUSIONS Enhanced TRPV1 function may contribute to increased glutamatergic transmission and activity of lateral habenula neurons, resulting in the aberrant behaviors during ethanol withdrawal.
Collapse
|
17
|
Journigan VB, Feng Z, Rahman S, Wang Y, Amin ARMR, Heffner CE, Bachtel N, Wang S, Gonzalez-Rodriguez S, Fernández-Carvajal A, Fernández-Ballester G, Hilton JK, Van Horn WD, Ferrer-Montiel A, Xie XQ, Rahman T. Structure-Based Design of Novel Biphenyl Amide Antagonists of Human Transient Receptor Potential Cation Channel Subfamily M Member 8 Channels with Potential Implications in the Treatment of Sensory Neuropathies. ACS Chem Neurosci 2020; 11:268-290. [PMID: 31850745 DOI: 10.1021/acschemneuro.9b00404] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Structure-activity relationship studies of a reported menthol-based transient receptor potential cation channel subfamily M member 8 channel (TRPM8) antagonist, guided by computational simulations and structure-based design, uncovers a novel series of TRPM8 antagonists with >10-fold selectivity versus related TRP subtypes. Spiro[4.5]decan-8-yl analogue 14 inhibits icilin-evoked Ca2+ entry in HEK-293 cells stably expressing human TRPM8 (hTRPM8) with an IC50 of 2.4 ± 1.0 nM, while in whole-cell patch-clamp recordings this analogue inhibits menthol-evoked currents with a hTRPM8 IC50 of 64 ± 2 nM. Molecular dynamics (MD) simulations of compound 14 in our homology model of hTRPM8 suggest that this antagonist forms extensive hydrophobic contacts within the orthosteric site. In the wet dog shakes (WDS) assay, compound 14 dose-dependently blocks icilin-triggered shaking behaviors in mice. Upon local administration, compound 14 dose dependently inhibits cold allodynia evoked by the chemotherapy oxaliplatin in a murine model of peripheral neuropathy at microgram doses. Our findings suggest that 14 and other biphenyl amide analogues within our series can find utility as potent antagonist chemical probes derived from (-)-menthol as well as small molecule therapeutic scaffolds for chemotherapy-induced peripheral neuropathy (CIPN) and other sensory neuropathies.
Collapse
Affiliation(s)
- V. Blair Journigan
- Department of Pharmaceutical Sciences, School of Pharmacy, Marshall University, Huntington, West Virginia 25755, United States
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia 25755, United States
| | - Zhiwei Feng
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- NIDA National Center of Excellence for Computational Drug Abuse Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Saifur Rahman
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1TN, United Kingdom
| | - Yuanqiang Wang
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- NIDA National Center of Excellence for Computational Drug Abuse Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - A. R. M. Ruhul Amin
- Department of Pharmaceutical Sciences, School of Pharmacy, Marshall University, Huntington, West Virginia 25755, United States
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia 25755, United States
| | - Colleen E. Heffner
- Department of Pharmaceutical Sciences, School of Pharmacy, Marshall University, Huntington, West Virginia 25755, United States
| | - Nicholas Bachtel
- Department of Pharmaceutical Sciences, School of Pharmacy, Marshall University, Huntington, West Virginia 25755, United States
| | - Siyi Wang
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- NIDA National Center of Excellence for Computational Drug Abuse Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Sara Gonzalez-Rodriguez
- IDiBE: Instituto de Investigación, Desarrollo e innovación en Biotecnología sanitaria de Elche, Universitas Miguel Hernández, 03202 Elche, Spain
| | - Asia Fernández-Carvajal
- IDiBE: Instituto de Investigación, Desarrollo e innovación en Biotecnología sanitaria de Elche, Universitas Miguel Hernández, 03202 Elche, Spain
| | - Gregorio Fernández-Ballester
- IDiBE: Instituto de Investigación, Desarrollo e innovación en Biotecnología sanitaria de Elche, Universitas Miguel Hernández, 03202 Elche, Spain
| | - Jacob K. Hilton
- The School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- the Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona 85281, United States
- The Magnetic Resonance Research Center, Arizona State University, Tempe, Arizona 85287, United States
| | - Wade D. Van Horn
- The School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- the Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona 85281, United States
- The Magnetic Resonance Research Center, Arizona State University, Tempe, Arizona 85287, United States
| | - Antonio Ferrer-Montiel
- IDiBE: Instituto de Investigación, Desarrollo e innovación en Biotecnología sanitaria de Elche, Universitas Miguel Hernández, 03202 Elche, Spain
| | - Xiang-Qun Xie
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- NIDA National Center of Excellence for Computational Drug Abuse Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Taufiq Rahman
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1TN, United Kingdom
| |
Collapse
|
18
|
Transient Receptor Potential Cation Channels in Cancer Therapy. Med Sci (Basel) 2019; 7:medsci7120108. [PMID: 31801263 PMCID: PMC6950741 DOI: 10.3390/medsci7120108] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/08/2019] [Accepted: 11/26/2019] [Indexed: 02/06/2023] Open
Abstract
In mammals, the transient receptor potential (TRP) channels family consists of six different families, namely TRPC (canonical), TRPV (vanilloid), TRPM (melastatin), TRPML (mucolipin), TRPP (polycystin), and TRPA (ankyrin), that are strictly connected with cancer cell proliferation, differentiation, cell death, angiogenesis, migration, and invasion. Changes in TRP channels' expression and function have been found to regulate cell proliferation and resistance or sensitivity of cancer cells to apoptotic-induced cell death, resulting in cancer-promoting effects or resistance to chemotherapy treatments. This review summarizes the data reported so far on the effect of targeting TRP channels in different types of cancer by using multiple TRP-specific agonists, antagonists alone, or in combination with classic chemotherapeutic agents, microRNA specifically targeting the TRP channels, and so forth, and the in vitro and in vivo feasibility evaluated in experimental models and in cancer patients. Considerable efforts have been made to fight cancer cells, and therapies targeting TRP channels seem to be the most promising strategy. However, more in-depth investigations are required to completely understand the role of TRP channels in cancer in order to design new, more specific, and valuable pharmacological tools.
Collapse
|
19
|
Thiel G, Backes TM, Welck J, Steinhausen S, Fischer AL, Langfermann DS, Ulrich M, Wissenbach U, Rössler OG. Pharmacological inhibition of TRPM8-induced gene transcription. Biochem Pharmacol 2019; 170:113678. [PMID: 31654626 DOI: 10.1016/j.bcp.2019.113678] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/18/2019] [Indexed: 12/12/2022]
Abstract
Transient receptor potential melastatin-8 (TRPM8) channels are activated by cold temperature, menthol and icilin, leading to cold sensation. TRPM8 activation is connected with various diseases, indicating that a specific pharmacological antagonist, allowing nongenetic channel suppression, would be a valuable tool for therapy and basic research. Here, we assessed the biological activity and specificity of various TRPM8 inhibitors following stimulation of TRPM8 channels with either icilin or menthol. Recently, we showed that icilin strikingly upregulates the transcriptional activity of AP-1. By measuring AP-1 activity, we assessed which compound interrupted the TRPM8-induced intracellular signaling cascade from the plasma membrane to the nucleus. We tested the specificity of various TRPM8 inhibitors by analyzing AP-1 activation following stimulation of TRPM3 and TRPV1 channels, L-type voltage-gated Ca2+ channels, and Gαq-coupled receptors, either in the presence or absence of a particular TRPM8 inhibitor. The results show that the TRPM8 inhibitors BCTC, RQ-00203078, TC-1 2014, 2-APB, and clotrimazole blocked TRPM8-mediated activation of AP-1. However, only the compound RQ-00203078 showed TRPM8-specificity, while the other compounds function as broad-spectrum Ca2+ channel inhibitors. In addition, we show that progesterone interfered with TRPM8-induced activation of AP-1, as previously shown for TRPM3 and TRPC6 channels. TRPM8-induced transcriptional activation of AP-1 was additionally blocked by the compound PD98059, indicating that extracellular signal-regulated protein kinase-1/2 is essential to couple TRPM8 stimulation with transcriptional activation of AP-1. Moreover, an influx of Ca2+-ions is essential to induce the intracellular signaling cascade leading to the activation of AP-1.
Collapse
Key Words
- 2-APB, PubChem CID: 1598
- BCTC, PubChem CID: 9929425
- Capsaicin, PubChem CID: 1548943
- Clotrimazole, PubChem CID: 2812
- Clozapine N-oxide, PubChem CID: 135445691
- Designer receptor
- ERK1/2
- FPL 64176, PubChem CID: 3423
- Icilin, PubChem CID: 161930
- KCl, PubChem CID: 4873
- Menthol, PubChem CID: 1254
- PD98059, PubChem CID: 4713
- Pregnenolone sulfate, PubChem CID: 105074
- Progesterone, PubChem CID: 5994
- RQ-00203078, PubChem CID: 49783953
- TC-1 2014, PubChem CID: 10040286
- TRPM3
- TRPM8
- TRPV1
- Voltage-gated calcium channel
Collapse
Affiliation(s)
- Gerald Thiel
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany.
| | - Tobias M Backes
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Jennifer Welck
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | | | - Anna-Lena Fischer
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Daniel S Langfermann
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Myriam Ulrich
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| | - Ulrich Wissenbach
- Experimental and Clinical Pharmacology, Saarland University Medical Faculty, D-66421 Homburg, Germany
| | - Oliver G Rössler
- Department of Medical Biochemistry and Molecular Biology, D-66421 Homburg, Germany
| |
Collapse
|
20
|
McKay TB, Seyed-Razavi Y, Ghezzi CE, Dieckmann G, Nieland TJF, Cairns DM, Pollard RE, Hamrah P, Kaplan DL. Corneal pain and experimental model development. Prog Retin Eye Res 2019; 71:88-113. [PMID: 30453079 PMCID: PMC6690397 DOI: 10.1016/j.preteyeres.2018.11.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 11/03/2018] [Accepted: 11/13/2018] [Indexed: 12/13/2022]
Abstract
The cornea is a valuable tissue for studying peripheral sensory nerve structure and regeneration due to its avascularity, transparency, and dense innervation. Somatosensory innervation of the cornea serves to identify changes in environmental stimuli at the ocular surface, thereby promoting barrier function to protect the eye against injury or infection. Due to regulatory demands to screen ocular safety of potential chemical exposure, a need remains to develop functional human tissue models to predict ocular damage and pain using in vitro-based systems to increase throughput and minimize animal use. In this review, we summarize the anatomical and functional roles of corneal innervation in propagation of sensory input, corneal neuropathies associated with pain, and the status of current in vivo and in vitro models. Emphasis is placed on tissue engineering approaches to study the human corneal pain response in vitro with integration of proper cell types, controlled microenvironment, and high-throughput readouts to predict pain induction. Further developments in this field will aid in defining molecular signatures to distinguish acute and chronic pain triggers based on the immune response and epithelial, stromal, and neuronal interactions that occur at the ocular surface that lead to functional outcomes in the brain depending on severity and persistence of the stimulus.
Collapse
Affiliation(s)
- Tina B McKay
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
| | - Yashar Seyed-Razavi
- Center for Translational Ocular Immunology and Cornea Service, Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Chiara E Ghezzi
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
| | - Gabriela Dieckmann
- Center for Translational Ocular Immunology and Cornea Service, Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Thomas J F Nieland
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
| | - Dana M Cairns
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
| | - Rachel E Pollard
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
| | - Pedram Hamrah
- Center for Translational Ocular Immunology and Cornea Service, Department of Ophthalmology, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA.
| |
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
|
Walcher L, Budde C, Böhm A, Reinach PS, Dhandapani P, Ljubojevic N, Schweiger MW, von der Waydbrink H, Reimers I, Köhrle J, Mergler S. TRPM8 Activation via 3-Iodothyronamine Blunts VEGF-Induced Transactivation of TRPV1 in Human Uveal Melanoma Cells. Front Pharmacol 2018. [DOI: 10.3389/fphar.2018.01234 ecollection 2018.pmid: 30483120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2022] Open
|
23
|
Walcher L, Budde C, Böhm A, Reinach PS, Dhandapani P, Ljubojevic N, Schweiger MW, von der Waydbrink H, Reimers I, Köhrle J, Mergler S. TRPM8 Activation via 3-Iodothyronamine Blunts VEGF-Induced Transactivation of TRPV1 in Human Uveal Melanoma Cells. Front Pharmacol 2018; 9:1234. [PMID: 30483120 PMCID: PMC6243059 DOI: 10.3389/fphar.2018.01234] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/11/2018] [Indexed: 01/17/2023] Open
Abstract
In human uveal melanoma (UM), tumor enlargement is associated with increases in aqueous humor vascular endothelial growth factor-A (VEGF-A) content that induce neovascularization. 3-Iodothyronamine (3-T1AM), an endogenous thyroid hormone metabolite, activates TRP melastatin 8 (TRPM8), which blunts TRP vanilloid 1 (TRPV1) activation by capsaicin (CAP) in human corneal, conjunctival epithelial cells, and stromal cells. We compare here the effects of TRPM8 activation on VEGF-induced transactivation of TRPV1 in an UM cell line (92.1) with those in normal primary porcine melanocytes (PM) since TRPM8 is upregulated in melanoma. Fluorescence Ca2+-imaging and planar patch-clamping characterized functional channel activities. CAP (20 μM) induced Ca2+ transients and increased whole-cell currents in both the UM cell line and PM whereas TRPM8 agonists, 100 μM menthol and 20 μM icilin, blunted such responses in the UM cells. VEGF (10 ng/ml) elicited Ca2+ transients and augmented whole-cell currents, which were blocked by capsazepine (CPZ; 20 μM) but not by a highly selective TRPM8 blocker, AMTB (20 μM). The VEGF-induced current increases were not augmented by CAP. Both 3-T1AM (1 μM) and menthol (100 μM) increased the whole-cell currents, whereas 20 μM AMTB blocked them. 3-T1AM exposure suppressed both VEGF-induced Ca2+ transients and increases in underlying whole-cell currents. Taken together, functional TRPM8 upregulation in UM 92.1 cells suggests that TRPM8 is a potential drug target for suppressing VEGF induced increases in neovascularization and UM tumor growth since TRPM8 activation blocked VEGF transactivation of TRPV1.
Collapse
Affiliation(s)
- Lia Walcher
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Clara Budde
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Arina Böhm
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Peter S Reinach
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China
| | | | - Nina Ljubojevic
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Markus W Schweiger
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Henriette von der Waydbrink
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ilka Reimers
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Josef Köhrle
- Institut für Experimentelle Endokrinologie, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Stefan Mergler
- Klinik für Augenheilkunde, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| |
Collapse
|
24
|
Toktanis G, Kaya-Sezginer E, Yilmaz-Oral D, Gur S. Potential therapeutic value of transient receptor potential channels in male urogenital system. Pflugers Arch 2018; 470:1583-1596. [PMID: 30194638 DOI: 10.1007/s00424-018-2188-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 07/11/2018] [Accepted: 07/24/2018] [Indexed: 12/11/2022]
Abstract
Transient receptor potential (TRP) channels comprise a family of cation channels implicated in a variety of cellular processes including light, mechanical or chemical stimuli, temperature, pH, or osmolarity. TRP channel proteins are a diverse family of proteins that are expressed in many tissues. We debated our recent knowledge about the expression, function, and regulation of TRP channels in the different parts of the male urogenital system in health and disease. Emerging evidence suggests that dysfunction of TRP channels significantly contributes to the pathophysiology of urogenital diseases. So far, there are many efforts underway to determine if these channels can be used as drug targets to reverse declines in male urogenital function. Furthermore, developing safe and efficacious TRP channel modulators is warranted for male urogenital disorders in a clinical setting.
Collapse
Affiliation(s)
| | - Ecem Kaya-Sezginer
- Faculty of Pharmacy, Department of Biochemistry and Pharmacology, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Didem Yilmaz-Oral
- Faculty of Pharmacy, Department of Biochemistry and Pharmacology, Ankara University, Tandogan, 06100, Ankara, Turkey.,Faculty of Pharmacy, Department of Pharmacology, Cukurova University, Adana, Turkey
| | - Serap Gur
- Faculty of Pharmacy, Department of Biochemistry and Pharmacology, Ankara University, Tandogan, 06100, Ankara, Turkey.
| |
Collapse
|
25
|
Kitamura N, Nagami E, Matsushita Y, Kayano T, Shibuya I. Constitutive activity of transient receptor potential vanilloid type 1 triggers spontaneous firing in nerve growth factor-treated dorsal root ganglion neurons of rats. IBRO Rep 2018; 5:33-42. [PMID: 30211336 PMCID: PMC6132080 DOI: 10.1016/j.ibror.2018.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 08/16/2018] [Indexed: 12/30/2022] Open
Abstract
We examined the role of TRPV1 in the generation of spontaneous APs in NGF-treated cultured DRG neurons of rats. Spontaneous firing in the on-cell configuration was abolished by TRPV1 antagonists capsazepine and BCTC. Chronic treatment with NGF induced capsazepine- and BCTC-sensitive cation conductance. NGF-induced cation conductance through TRPV1 causes spontaneous firing.
Dorsal root ganglion (DRG) neurons cultured in the presence of nerve growth factor (NGF, 100 ng/ml) often show a spontaneous action potential. Underlying mechanisms of this spontaneous firing were examined using the patch clamp technique. The spontaneous firing in the on-cell configuration was abolished by a decrease in the Na+ concentration and by the TRPV1 antagonists capsazepine (10 μM) and BCTC (1 μM). These responses were accompanied by hyperpolarization of the resting potential. The holding current observed in neurons voltage clamped at –60 mV in the whole-cell configuration was significantly larger in the neurons that fired spontaneously, indicating that these neurons had an additional cation conductance that caused depolarization and triggered action potentials. The holding current in the firing neurons was decreased by extracellular Na+ reduction, capsazepine and BCTC. The amplitudes of the capsazepine- or BCTC-sensitive component of the holding current in the spontaneously firing neurons were ten times as large as those recorded in the other neurons showing no spontaneous firing. However, the amplitudes of the current responses to capsaicin (1 μM) were not different regardless of the presence of spontaneous firing or treatment with NGF. These results indicate that chronic NGF treatment of cultured DRG neurons in rats induces a constitutively active cation conductance through TRPV1, which depolarizes the neurons and triggers spontaneous action potentials in the absence of any stimuli. Since NGF in the DRG is reported to increase after nerve injury, this NGF-mediated regulation of TRPV1 may be a cause of the pathogenesis of neuropathic pain.
Collapse
Affiliation(s)
- Naoki Kitamura
- Laboratory of Veterinary Physiology, Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| | - Erika Nagami
- Laboratory of Veterinary Physiology, Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| | - Yumi Matsushita
- Laboratory of Veterinary Physiology, Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| | - Tomohiko Kayano
- Laboratory of Veterinary Physiology, Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| | - Izumi Shibuya
- Laboratory of Veterinary Physiology, Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| |
Collapse
|
26
|
Noyer L, Grolez GP, Prevarskaya N, Gkika D, Lemonnier L. TRPM8 and prostate: a cold case? Pflugers Arch 2018; 470:1419-1429. [PMID: 29926226 DOI: 10.1007/s00424-018-2169-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 12/19/2022]
Abstract
While originally cloned from the prostate in 2001, transient receptor potential, melastatin member 8 (TRPM8) has since been identified as the cold/menthol receptor in the peripheral nervous system. This discovery has led to hundreds of studies regarding the role of this channel in pain and thermosensation phenomena, while relegating TRPM8 involvement in cancer to a secondary role. Despite these findings, there is growing evidence that TRPM8 should be carefully studied within the frame of carcinogenesis, especially in the prostate, where it is highly expressed and where many teams have confirmed variations in its expression during cancer progression. Its regulation by physiological factors, such as PSA and androgens, has proved that TRPM8 can exhibit an activity beyond that of a cold receptor, thus explaining how the channel can be activated in organs not exposed to temperature variations. With this review, we aim to provide a brief overview of the current knowledge regarding the complex roles of TRPM8 in prostate carcinogenesis and to show that this research path still represents a "hot" topic with potential clinical applications in the short term.
Collapse
Affiliation(s)
- Lucile Noyer
- Inserm, U1003, Laboratory of Cell Physiology, University Lille Nord de France, 59655 Cedex, Villeneuve d'Ascq, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Guillaume P Grolez
- Inserm, U1003, Laboratory of Cell Physiology, University Lille Nord de France, 59655 Cedex, Villeneuve d'Ascq, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Inserm, U1003, Laboratory of Cell Physiology, University Lille Nord de France, 59655 Cedex, Villeneuve d'Ascq, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Dimitra Gkika
- Inserm, U1003, Laboratory of Cell Physiology, University Lille Nord de France, 59655 Cedex, Villeneuve d'Ascq, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Loic Lemonnier
- Inserm, U1003, Laboratory of Cell Physiology, University Lille Nord de France, 59655 Cedex, Villeneuve d'Ascq, France.
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France.
| |
Collapse
|
27
|
Abstract
Of somatosensory modalities cold is one of the more ambiguous percepts, evoking the pleasant sensation of cooling, the stinging bite of cold pain, and welcome relief from chronic pain. Moreover, unlike the precipitous thermal thresholds for heat activation of thermosensitive afferent neurons, thresholds for cold fibers are across a range of cool to cold temperatures that spans over 30°C. Until recently, how cold produces this myriad of biologic effects was unknown. However, recent advances in our understanding of cold mechanisms at the behavioral, physiologic, and cellular level have begun to provide insights into this sensory modality. The identification of a number of ion channels that either serve as the principal detectors of a cold stimulus in the peripheral nervous system, or are part of a differential expression pattern of channels that maintain cell excitability in the cold, endows select neurons with properties that are amenable to electric signaling in the cold. This chapter highlights the current understanding of the molecules involved in cold transduction in the mammalian peripheral nervous system, as well as presenting a hypothetic model to account for the broad range of cold thermal thresholds and distinct functions of cold fibers in perception, pain, and analgesia.
Collapse
Affiliation(s)
- David D McKemy
- Section of Neurobiology, Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States.
| |
Collapse
|
28
|
Bouvier V, Roudaut Y, Osorio N, Aimonetti JM, Ribot-Ciscar E, Penalba V, Merrot T, Lebonvallet N, Le Gall-Ianotto C, Misery L, Delmas P, Crest M. Merkel Cells Sense Cooling with TRPM8 Channels. J Invest Dermatol 2017; 138:946-956. [PMID: 29138055 DOI: 10.1016/j.jid.2017.11.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 10/02/2017] [Accepted: 11/03/2017] [Indexed: 10/18/2022]
Abstract
In the skin, Merkel cells connect with keratinocytes and Aβ nerve fibers to form a touch receptor that functions as a slow adapting mechanoreceptor (slow adapting type 1). In human and mouse Merkel cells, we observed an increased concentration of intracellular Ca2+ ions in response to cold temperature and transient receptor potential melastatine 8 (TRPM8) ion channel agonists. A reduction in the response to cooling and TRPM8 agonists occurred after the addition of TRPM8 antagonists, as well as in TRPM8 knockout mice. Cold temperature and TRPM8 agonists also induced a current that was inhibited by a TRPM8 antagonist. Our results indicate that Merkel cells sense cooling through TRPM8 channels. We hypothesized that cooling modulates the slow adapting type 1 receptor response. Cooling mouse skin to 22°C reduced the slow adapting type 1 receptor discharge frequency. Interestingly, we observed no such reduction in TRPM8 knockout mice. Similarly, in human skin, a temperature of 22°C applied to the slow adapting type 1 receptive field reduced the spiking discharge. Altogether, our results indicate that Merkel cells are polymodal sensory cells that respond to mild cold stimuli through the activation of TRPM8 channels. Thermal activation of Merkel cells, and possibly other TRPM8-expressing non-neuronal cells, such as keratinocytes, potentially adapts the discharge of slow adapting type 1 receptors during cooling.
Collapse
Affiliation(s)
- Valentine Bouvier
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France
| | - Yann Roudaut
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France
| | - Nancy Osorio
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France
| | - Jean-Marc Aimonetti
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Laboratoire de Neurosciences Intégratives et Adaptatives, UMR 7260, Marseille, France
| | - Edith Ribot-Ciscar
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Laboratoire de Neurosciences Intégratives et Adaptatives, UMR 7260, Marseille, France
| | - Virginie Penalba
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France
| | - Thierry Merrot
- Aix Marseille Université, Assistance Publique-Hôpitaux de Marseille, Hôpital Nord, Service de Chirurgie Infantile, Marseille, France
| | | | | | - Laurent Misery
- Université de Brest, Laboratoire de Neurosciences, Brest, France
| | - Patrick Delmas
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France
| | - Marcel Crest
- Aix Marseille Université, Centre National de la Recherche Scientifique, Centre de Recherche en Neurobiologie-Neurophysiologie de Marseille, UMR 7286, Marseille, France.
| |
Collapse
|
29
|
Novel selective, potent naphthyl TRPM8 antagonists identified through a combined ligand- and structure-based virtual screening approach. Sci Rep 2017; 7:10999. [PMID: 28887460 PMCID: PMC5591244 DOI: 10.1038/s41598-017-11194-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 07/21/2017] [Indexed: 02/03/2023] Open
Abstract
Transient receptor potential melastatin 8 (TRPM8), a nonselective cation channel, is the predominant mammalian cold temperature thermosensor and it is activated by cold temperatures and cooling compounds, such as menthol and icilin. Because of its role in cold allodynia, cold hyperalgesia and painful syndromes TRPM8 antagonists are currently being pursued as potential therapeutic agents for the treatment of pain hypersensitivity. Recently TRPM8 has been found in subsets of bladder sensory nerve fibres, providing an opportunity to understand and treat chronic hypersensitivity. However, most of the known TRPM8 inhibitors lack selectivity, and only three selective compounds have reached clinical trials to date. Here, we applied two virtual screening strategies to find new, clinics suitable, TRPM8 inhibitors. This strategy enabled us to identify naphthyl derivatives as a novel class of potent and selective TRPM8 inhibitors. Further characterization of the pharmacologic properties of the most potent compound identified, compound 1, confirmed that it is a selective, competitive antagonist inhibitor of TRPM8. Compound 1 also proved itself active in a overreactive bladder model in vivo. Thus, the novel naphthyl derivative compound identified here could be optimized for clinical treatment of pain hypersensitivity in bladder disorders but also in different other pathologies.
Collapse
|
30
|
Smith CJ, Craighead DH, Alexander LM. Effects of vehicle microdialysis solutions on cutaneous vascular responses to local heating. J Appl Physiol (1985) 2017; 123:1461-1467. [PMID: 28860170 DOI: 10.1152/japplphysiol.00498.2017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Microdialysis is a minimally invasive technique often paired with laser Doppler flowmetry to examine cutaneous microvascular function, yet presents with several challenges, including incompatibility with perfusion of highly lipophilic compounds. The present study addresses this methodological concern, with an emphasis on the independent effects of commonly used vehicle dialysis solutions to improve solubility of pharmacological agents with otherwise low aqueous solubility. Four microdialysis fibers were placed in the ventral forearm of eight subjects (4 men, 4 women; 25 ± 1 yr) with sites randomized to serve as 1) control (lactated Ringer's), 2) Sodium carbonate-bicarbonate buffer administered at physiological pH [SCB-HCl; pH 7.4, achieved via addition of hydrochloric acid (HCl)], 3) 0.02% ethanol, and 4) 2% dimethyl sulfoxide (DMSO). After baseline (34°C), vehicle solutions were administered throughout a standardized local heating protocol to 42°C. Laser Doppler flowmetry provided an index of blood flow. Cutaneous vascular conductance was calculated and normalized to maximum (%CVCmax, sodium nitroprusside and 43°C local heat). The SCB-HCl solution increased baseline %CVCmax (control: 9.7 ± 0.8; SCB-HCl: 21.5 ± 3.5%CVCmax; P = 0.03), but no effects were observed during heating or maximal vasodilation. There were no differences with perfusion of ethanol or DMSO at any stage of the protocol ( P > 0.05). These data demonstrate the potential confounding effects of some vehicle dialysis solutions on cutaneous vascular function. Notably, this study provides evidence that 2% DMSO and 0.02% ethanol are acceptable vehicles with no confounding local vascular effects to a standardized local heating protocol at the concentrations presented. NEW & NOTEWORTHY This study examined the independent effects of common vehicle solutions on cutaneous vascular responses. A basic buffer (SCB-HCl) caused baseline vasodilation; 2% DMSO and 0.02% ethanol had no effects. This highlights the need for considering potential confounding effects of solubilizing solutions when combined with low aqueous soluble pharmacological agents. Importantly, DMSO and ethanol do not appear to influence cutaneous vascular function during baseline or local heating at the concentrations studied, allowing their use without confounding effects.
Collapse
Affiliation(s)
- Caroline J Smith
- Department of Health and Exercise Science, Appalachian State University, Boone, North Carolina
| | - Daniel H Craighead
- Department of Kinesiology, Noll Laboratory, The Pennsylvania State University , University Park, Pennsylvania
| | - Lacy M Alexander
- Department of Kinesiology, Noll Laboratory, The Pennsylvania State University , University Park, Pennsylvania
| |
Collapse
|
31
|
Kubo T, Tsuji S, Amano T, Yoshino F, Niwa Y, Kasahara K, Yoshida S, Mukaisho KI, Sugihara H, Tanaka S, Kimura F, Takahashi K, Murakami T. Effects of β-estradiol on cold-sensitive receptor channel TRPM8 in ovariectomized rats. Exp Anim 2017. [PMID: 28626113 PMCID: PMC5682346 DOI: 10.1538/expanim.17-0028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Transient receptor potential cation channel subfamily M member 8 (TRPM8) is associated
with sensitivity to cold sensation in mammals. A previous study demonstrated that TRPM8
was overexpressed in the skin of ovariectomized (OVX) rats due to the loss of estrogen. In
the present study, we investigated whether estrogen replacement restricts overexpression
of the TRPM8 channel in the skin of OVX rats. We divided 15 Sprague Dawley rats into three
groups: a non-operated group (NON-OPE), an ovariectomy group (OVX), and a group subjected
to estrogen replacement during 4 weeks beginning 7 days after ovariectomy (OVX + E2). Five
weeks later, TRPM8 channel mRNA and protein in lumbar skin were quantified by real-time
RT-PCR, protein ELISA, and immunohistochemistry. The OVX + E2 group exhibited a trend for
decreased expression of the TRPM8 channel in the lumbar skin in comparison with the OVX
group, whereas ELISA data and immunohistochemistry data and immunohistochemistry graphs
relating to TRPM8 protein did not show any obvious differences between the OVX group and
the OVX + E2 group. Estrogen replacement may restrict the overexpression of TRPM8 in the
dermis of OVX rats.
Collapse
Affiliation(s)
- Takuro Kubo
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Shunichiro Tsuji
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Tsukuru Amano
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Fumi Yoshino
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Yoko Niwa
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Kyoko Kasahara
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Saori Yoshida
- Department of Pathology, Division of Molecular and Diagnostic Pathology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Ken-Ichi Mukaisho
- Department of Pathology, Division of Molecular and Diagnostic Pathology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Hiroyuki Sugihara
- Department of Pathology, Division of Molecular and Diagnostic Pathology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Sachiko Tanaka
- Department of Social Medicine, Division of Medical Statistics, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Fuminori Kimura
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Kentaro Takahashi
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| | - Takashi Murakami
- Department of Obstetrics and Gynecology, Shiga University of Medical Science, Seta-tsukinowa, Otsu, Shiga 520-2192, Japan
| |
Collapse
|
32
|
Jerônimo R, Moraes MN, de Assis LVM, Ramos BC, Rocha T, Castrucci AMDL. Thermal stress in Danio rerio: a link between temperature, light, thermo-TRP channels, and clock genes. J Therm Biol 2017; 68:128-138. [PMID: 28689714 DOI: 10.1016/j.jtherbio.2017.02.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 12/16/2022]
Abstract
It is believed that the biological systems perceiving temperature and light daily cycles were subjected to the simultaneous selective pressures, which resulted in their co-evolutionary association. We investigated the influence of 1h 33°C heat shock on the expression of clock and heat shock protein genes, as well as the role of the thermo-TRP channel, TRPV1, in ZEM-2S cells of the teleost Danio rerio, in constant dark (DD) or light-dark cycles (LD). After heat shock, we observed an acute increase of hsp90 aa1 levels in both DD and LD conditions. Interestingly, the expression of hsp90 aa1 was two-fold lower in LD than in DD, what suggests an antagonistic effect of white light on heat shock action. Regarding clock genes, no effect was found in cells subjected to the heat shock in DD. When cells were kept in LD, the expression of per1, per2, cry1a, and cry1b increased in response to heat shock, indicating that heat shock only affects clock core of LD-synchronized ZEM-2S cells. We then evaluated whether TRPV1 played a role in heat-mediated hsp90 aa1 and per2 responses: hsp90 aa1 increase was unaffected whereas per2 increase was partially blocked by TRPV1 inhibitor, demonstrating the channel participation in clock gene regulation by heat shock. Taken together, our results open a novel investigative perspective regarding the relationship between temperature and clock genes, placing a new player in the regulation of this phenomenon: the TRPV1 channel.
Collapse
Affiliation(s)
- Rodrigo Jerônimo
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Maria Nathália Moraes
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Leonardo Vinícius Monteiro de Assis
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Bruno César Ramos
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Thainá Rocha
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Ana Maria de Lauro Castrucci
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
33
|
Aghazadeh Tabrizi M, Baraldi PG, Baraldi S, Gessi S, Merighi S, Borea PA. Medicinal Chemistry, Pharmacology, and Clinical Implications of TRPV1 Receptor Antagonists. Med Res Rev 2016; 37:936-983. [PMID: 27976413 DOI: 10.1002/med.21427] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 10/24/2016] [Accepted: 11/01/2016] [Indexed: 12/28/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is an ion channel expressed on sensory neurons triggering an influx of cations. TRPV1 receptors function as homotetramers responsive to heat, proinflammatory substances, lipoxygenase products, resiniferatoxin, endocannabinoids, protons, and peptide toxins. Its phosphorylation increases sensitivity to both chemical and thermal stimuli, while desensitization involves a calcium-dependent mechanism resulting in receptor dephosphorylation. TRPV1 functions as a sensor of noxious stimuli and may represent a target to avoid pain and injury. TRPV1 activation has been associated to chronic inflammatory pain and peripheral neuropathy. Its expression is also detected in nonneuronal areas such as bladder, lungs, and cochlea where TRPV1 activation is responsible for pathology development of cystitis, asthma, and hearing loss. This review offers a comprehensive overview about TRPV1 receptor in the pathophysiology of chronic pain, epilepsy, cough, bladder disorders, diabetes, obesity, and hearing loss, highlighting how drug development targeting this channel could have a clinical therapeutic potential. Furthermore, it summarizes the advances of medicinal chemistry research leading to the identification of highly selective TRPV1 antagonists and their analysis of structure-activity relationships (SARs) focusing on new strategies to target this channel.
Collapse
Affiliation(s)
- Mojgan Aghazadeh Tabrizi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Pier Giovanni Baraldi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Baraldi
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Gessi
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Stefania Merighi
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Pier Andrea Borea
- Section of Pharmacology, Department of Medical Sciences, University of Ferrara, 44121, Ferrara, Italy
| |
Collapse
|
34
|
Yamamoto A, Takahashi K, Saito S, Tominaga M, Ohta T. Two different avian cold-sensitive sensory neurons: Transient receptor potential melastatin 8 (TRPM8)-dependent and -independent activation mechanisms. Neuropharmacology 2016; 111:130-141. [DOI: 10.1016/j.neuropharm.2016.08.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 08/23/2016] [Accepted: 08/29/2016] [Indexed: 11/29/2022]
|
35
|
De Petrocellis L, Arroyo FJ, Orlando P, Schiano Moriello A, Vitale RM, Amodeo P, Sánchez A, Roncero C, Bianchini G, Martín MA, López-Alvarado P, Menéndez JC. Tetrahydroisoquinoline-Derived Urea and 2,5-Diketopiperazine Derivatives as Selective Antagonists of the Transient Receptor Potential Melastatin 8 (TRPM8) Channel Receptor and Antiprostate Cancer Agents. J Med Chem 2016; 59:5661-83. [PMID: 27232526 DOI: 10.1021/acs.jmedchem.5b01448] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetrahydroisoquinoline derivatives containing embedded urea functions were identified as selective TRPM8 channel receptor antagonists. Structure-activity relationships were investigated, with the following conclusions: (a) The urea function and the tetrahydroisoquinoline system are necessary for activity. (b) Bis(1-aryl-6,7dimethoxy-1,2,3,4-tetrahydroisoquinolyl)ureas are more active than compounds containing one tetrahydroisoquinoline ring and than an open phenetylamine ureide. (c) Trans compounds are more active than their cis isomers. (d) Aryl substituents are better than alkyls at the isoquinoline C-1 position. (e) Electron-withdrawing substituents lead to higher activities. The most potent compound is the 4-F derivative, with IC50 in the 10(-8) M range and selectivities around 1000:1 for most other TRP receptors. Selected compounds were found to be active in reducing the growth of LNCaP prostate cancer cells. TRPM8 inhibition reduces proliferation in the tumor cells tested but not in nontumor prostate cells, suggesting that the activity against prostate cancer is linked to TRPM8 inhibition.
Collapse
Affiliation(s)
- Luciano De Petrocellis
- Endocannabinoid Research Group, Institute of Protein Biochemistry and Institute of Applied Sciences & Intelligent Systems, National Research Council , Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy
| | - Francisco J Arroyo
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - Pierangelo Orlando
- Endocannabinoid Research Group, Institute of Protein Biochemistry, National Research Council , Via P. Castellino 111, 80131 Naples, Italy
| | - Aniello Schiano Moriello
- Endocannabinoid Research Group, Institute of Protein Biochemistry and Institute of Applied Sciences & Intelligent Systems, National Research Council , Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy
| | - Rosa Maria Vitale
- Endocannabinoid Research Group, Institute of Protein Biochemistry and Institute of Applied Sciences & Intelligent Systems, National Research Council , Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy
| | - Pietro Amodeo
- Endocannabinoid Research Group, Institute of Protein Biochemistry and Institute of Applied Sciences & Intelligent Systems, National Research Council , Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy
| | - Aránzazu Sánchez
- Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - Cesáreo Roncero
- Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - Giulia Bianchini
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - M Antonia Martín
- S.D. Química Analítica, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - Pilar López-Alvarado
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| | - J Carlos Menéndez
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense , 28040 Madrid, Spain
| |
Collapse
|
36
|
Bertamino A, Ostacolo C, Ambrosino P, Musella S, Di Sarno V, Ciaglia T, Soldovieri MV, Iraci N, Fernandez Carvajal A, de la Torre-Martinez R, Ferrer-Montiel A, Gonzalez Muniz R, Novellino E, Taglialatela M, Campiglia P, Gomez-Monterrey I. Tryptamine-Based Derivatives as Transient Receptor Potential Melastatin Type 8 (TRPM8) Channel Modulators. J Med Chem 2016; 59:2179-91. [PMID: 26847872 DOI: 10.1021/acs.jmedchem.5b01914] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Pharmacological modulation of the transient receptor potential melastatin type 8 (TRPM8) is currently under investigation as a new approach for the treatment of pain and other diseases. In this study, a series of N-substituted tryptamines was prepared to explore the structural requirements determining TRPM8 modulation. Using a fluorescence-based screening assay, we identified two compounds acting as an activator (2-(1H-indol-3-yl)-N-(4-phenoxybenzyl)ethanamine, 21) or an inhibitor (N,N-dibenzyl-2-(1H-indol-3-yl)ethanamine, 12) of calcium influx in HEK293 cells. In patch-clamp recordings, compound 21 displayed a significantly higher potency (EC50 = 40 ± 4 μM) and a similar efficacy when compared to menthol; by contrast, compound 12 produced a concentration-dependent inhibition of menthol-induced TRPM8 currents (IC50 = 367 ± 24 nM). Molecular modeling studies using a homology model of a single rat TRPM8 subunit identified a putative binding site located between the VSD and the TRP box, disclosing differences in the binding modes for the agonist and the antagonist.
Collapse
Affiliation(s)
- Alessia Bertamino
- Department of Pharmacy, University of Salerno , Via G. Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Carmine Ostacolo
- Department of Pharmacy, University Federico II of Naples , Via D. Montesano 49, 80131, Naples, Italy
| | - Paolo Ambrosino
- Department of Medicine and Health Science V. Tiberio, University of Molise , Via F. de Sanctis, 86100, Campobasso, Italy
| | - Simona Musella
- Department of Pharmacy, University Federico II of Naples , Via D. Montesano 49, 80131, Naples, Italy
| | - Veronica Di Sarno
- Department of Pharmacy, University of Salerno , Via G. Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Tania Ciaglia
- Department of Pharmacy, University of Salerno , Via G. Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Maria Virginia Soldovieri
- Department of Medicine and Health Science V. Tiberio, University of Molise , Via F. de Sanctis, 86100, Campobasso, Italy
| | - Nunzio Iraci
- Department of Pharmacy, University of Salerno , Via G. Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Asia Fernandez Carvajal
- Institute of Molecular and Cellular Biology, University Miguel Hernández of Elche , 032020, Elche, Alicante, Spain
| | - Roberto de la Torre-Martinez
- Institute of Molecular and Cellular Biology, University Miguel Hernández of Elche , 032020, Elche, Alicante, Spain
| | - Antonio Ferrer-Montiel
- Institute of Molecular and Cellular Biology, University Miguel Hernández of Elche , 032020, Elche, Alicante, Spain
| | - Rosario Gonzalez Muniz
- Institute of Medicinal Chemistry, IQM-CSIC , c/Juan de la Cierva 3, 28006, Madrid, Spain
| | - Ettore Novellino
- Department of Pharmacy, University Federico II of Naples , Via D. Montesano 49, 80131, Naples, Italy
| | - Maurizio Taglialatela
- Department of Medicine and Health Science V. Tiberio, University of Molise , Via F. de Sanctis, 86100, Campobasso, Italy
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno , Via G. Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Isabel Gomez-Monterrey
- Department of Pharmacy, University Federico II of Naples , Via D. Montesano 49, 80131, Naples, Italy
| |
Collapse
|
37
|
Liu Z, Wu H, Wei Z, Wang X, Shen P, Wang S, Wang A, Chen W, Lu Y. TRPM8: a potential target for cancer treatment. J Cancer Res Clin Oncol 2016; 142:1871-81. [PMID: 26803314 DOI: 10.1007/s00432-015-2112-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 12/28/2015] [Indexed: 01/09/2023]
Abstract
Transient receptor potential (TRP) cation channel superfamily plays critical roles in variety of processes, including temperature perception, pain transduction, vasorelaxation, male fertility, and tumorigenesis. One of seven families within the TRP superfamily of ion channels, the melastatin, or TRPM family comprises a group of eight structurally and functionally diverse channels. Of all the members of TRPM subfamily, TRPM8 is the most notable one. A lot of literatures have demonstrated that transient receptor potential melastatin 8 (TRPM8) could perform a myriad of functions in vertebrates and invertebrates alike. In addition to its well-known function in cold sensation, TRPM8 has an emerging role in a variety of biological systems, including thermoregulation, cancer, bladder function, and asthma. Recent studies have shown that TRPM8 is necessary to the initiation and progression of tumors, and the aberrant expression of TRPM8 was found in varieties of tumors, such as prostate tumor, melanoma, breast adenocarcinoma, bladder cancer, and colorectal cancer, making it a novel molecular target potentially useful in the diagnosis and treatment of cancer. This review outlines our current understanding on the role of TRPM8 in occurrence and development of different kinds of tumor and also includes discussion about the regulation of TRPM8 during carcinogenesis as well as therapeutic potential of targeting TRPM8 in tumor, which may be utilized for a potential pharmacological use as a target for anti-cancer therapy.
Collapse
Affiliation(s)
- Zhaoguo Liu
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Hongyan Wu
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China.,Department of Pharmacy, Yancheng Health Vocational and Technical College, Yancheng, 224005, Jiangsu Province, China
| | - Zhonghong Wei
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Xu Wang
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Peiliang Shen
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Siliang Wang
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Aiyun Wang
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Wenxing Chen
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Yin Lu
- Department of Clinical Pharmacy, College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, 210023, Jiangsu, People's Republic of China. .,Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, 210029, China.
| |
Collapse
|
38
|
Reciprocal effects of capsaicin and menthol on thermosensation through regulated activities of TRPV1 and TRPM8. J Physiol Sci 2015; 66:143-55. [PMID: 26645885 PMCID: PMC4752590 DOI: 10.1007/s12576-015-0427-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 09/16/2015] [Indexed: 11/23/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is activated by elevated
temperature (>42 °C), and it has been reported that cold temperature decreases capsaicin-induced TRPV1 activity. In contrast, transient receptor potential melastatin 8 (TRPM8) is activated by low temperatures and menthol, and heat stimulation suppresses menthol-evoked TRPM8 currents. These findings suggest that the effects of specific agents on TRPV1 and TRPM8 channels are intricately interrelated. We examined the effects of menthol on human (h)TRPV1 and of capsaicin on hTRPM8. hTRPV1 currents activated by heat and capsaicin were inhibited by menthol, whereas hTRPM8 currents activated by cold and menthol were similarly inhibited by capsaicin. An in vivo sensory irritation test showed that menthol conferred an analgesic effect on the sensory irritation evoked by a capsaicin analogue. These results indicate that in our study the agonists of TRPV1 and TRPM8 interacted with both of these channels and suggest that the anti-nociceptive effects of menthol can be partially explained by this phenomenon.
Collapse
|
39
|
Vijayvergiya V, Acharya S, Wilson SP, Schmidt JJ. Measurement of Ensemble TRPV1 Ion Channel Currents Using Droplet Bilayers. PLoS One 2015; 10:e0141366. [PMID: 26513481 PMCID: PMC4626236 DOI: 10.1371/journal.pone.0141366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 10/06/2015] [Indexed: 11/18/2022] Open
Abstract
Electrophysiological characterization of ion channels is useful for elucidation of channel function as well as quantitative assessment of pharmaceutical effects on ion channel conductance. We used droplet bilayers to measure ensemble ion channel currents from membrane preparations made from TRPV1-expressing HEK cells. Conductance measurements showed rectification, activation by acid and capsaicin, and inhibition by capsazepine, SB 452533, and JNJ 17293212. We also quantitatively measured concentration-dependent inhibition of channel conductance through determination of capsazepine IC50 in agreement with previously published studies using patch clamp. These results, combined with the reduced apparatus and material requirements of droplet bilayers, indicate that this platform could be used for study of other physiologically relevant ion channels.
Collapse
Affiliation(s)
- Viksita Vijayvergiya
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America
| | - Shiv Acharya
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America
| | - Sidney P. Wilson
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America
| | - Jacob J. Schmidt
- Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
| |
Collapse
|
40
|
Majhi RK, Saha S, Kumar A, Ghosh A, Swain N, Goswami L, Mohapatra P, Maity A, Kumar Sahoo V, Kumar A, Goswami C. Expression of temperature-sensitive ion channel TRPM8 in sperm cells correlates with vertebrate evolution. PeerJ 2015; 3:e1310. [PMID: 26500819 PMCID: PMC4614861 DOI: 10.7717/peerj.1310] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 09/19/2015] [Indexed: 12/13/2022] Open
Abstract
Transient Receptor Potential cation channel, subfamily Melastatin, member 8 (TRPM8) is involved in detection of cold temperature, different noxious compounds and in execution of thermo- as well as chemo-sensitive responses at cellular levels. Here we explored the molecular evolution of TRPM8 by analyzing sequences from various species. We elucidate that several regions of TRPM8 had different levels of selection pressure but the 4th-5th transmembrane regions remain highly conserved. Analysis of synteny suggests that since vertebrate origin, TRPM8 gene is linked with SPP2, a bone morphogen. TRPM8, especially the N-terminal region of it, seems to be highly variable in human population. We found 16,656 TRPM8 variants in 1092 human genomes with top variations being SNPs, insertions and deletions. A total of 692 missense mutations are also mapped to human TRPM8 protein of which 509 seem to be delateroiours in nature as supported by Polyphen V2, SIFT and Grantham deviation score. Using a highly specific antibody, we demonstrate that TRPM8 is expressed endogenously in the testis of rat and sperm cells of different vertebrates ranging from fish to higher mammals. We hypothesize that TRPM8 had emerged during vertebrate evolution (ca 450 MYA). We propose that expression of TRPM8 in sperm cell and its role in regulating sperm function are important factors that have guided its molecular evolution, and that these understandings may have medical importance.
Collapse
Affiliation(s)
- Rakesh Kumar Majhi
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| | - Somdatta Saha
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
- School of Biotechnology, KIIT University, Bhubaneswar, Orissa, India
| | - Ashutosh Kumar
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| | - Arijit Ghosh
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| | - Nirlipta Swain
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| | - Luna Goswami
- School of Biotechnology, KIIT University, Bhubaneswar, Orissa, India
| | - Pratyush Mohapatra
- Department of Zoology, Government Science College, Chatrapur, Ganjam, Odisha, India
| | - Apratim Maity
- Department of Veterinary Biochemistry, CVSc & AH, Orissa University of Agriculture & Technology, Bhubaneswar, Orissa, India
| | - Vivek Kumar Sahoo
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| | - Abhishek Kumar
- Department of Genetics & Molecular Biology in Botany, Institute of Botany, Christian-Albrechts-University at Kiel, Kiel, SH, Germany
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, BW, Germany
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and Research, Institute of Physics Campus, Bhubaneswar, Orissa, India
| |
Collapse
|
41
|
De Petrocellis L, Ortar G, Schiano Moriello A, Serum EM, Rusterholz DB. Structure-activity relationships of the prototypical TRPM8 agonist icilin. Bioorg Med Chem Lett 2015; 25:2285-90. [PMID: 25935641 DOI: 10.1016/j.bmcl.2015.04.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/10/2015] [Accepted: 04/12/2015] [Indexed: 01/28/2023]
Abstract
A series of structural analogues of the TRPM8 agonist icilin was prepared. The compounds were examined for their ability to exert agonist or antagonist effects in HEK-293 cells expressing the TRPM8 receptor. Most structural modifications of the icilin structure largely met with diminished TRPM8 agonist activity. Cinnamamide 'open-chain' analogs of icilin, however, demonstrated significant antagonistic actions at the TRPM8 receptor. Optimal potency (IC50=73 nM) was observed in the 3-iodo derivative 18l.
Collapse
Affiliation(s)
- Luciano De Petrocellis
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy.
| | - Giorgio Ortar
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza-Università di Roma, piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Aniello Schiano Moriello
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti, 80078 Pozzuoli, Naples, Italy
| | - Eric M Serum
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108, United States
| | - David B Rusterholz
- Department of Chemistry, University of Wisconsin-River Falls, 410 S. Third St., River Falls, WI 54022, United States
| |
Collapse
|
42
|
Arias-Darraz L, Colenso CK, Veliz LA, Vivar JP, Cardenas S, Brauchi S. A TRP conductance modulates repolarization after sensory-dependent depolarization in Chlamydomonas reinhardtii. PLANT SIGNALING & BEHAVIOR 2015; 10:e1052924. [PMID: 26186626 PMCID: PMC4622017 DOI: 10.1080/15592324.2015.1052924] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 05/26/2023]
Abstract
Sensory integration is vital for motile organisms constantly exposed to changing surroundings. Chlamydomonas reinhardtii is a single-celled green alga found swimming in freshwater. In this type of alga, sensory input is first detected by membrane receptors located in the cell body, and then transduced to the beating cilia by membrane depolarization. Many components of the machinery associated with sensory integration in C. reinhardtii, such as chemoreceptors and repolarization-associated channels, are yet uncharacterized. TRP channels are known mediators for cellular sensing in animal cells and it has been suggested that the C. reinhardtii genome encodes for a set of TRP proteins. Here, by combining behavioral studies with electrophysiological experiments conducted on both population and single alga, we test whether TRP channel blockers affect algal swimming behavior. Our results suggest that a TRP conductance is associated to the repolarization that follows a depolarizing receptor potential, highlighting a primitive function of TRP proteins.
Collapse
Affiliation(s)
- Luis Arias-Darraz
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| | - Charlotte K Colenso
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| | - Luis A Veliz
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| | - Juan P Vivar
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| | - Sylvana Cardenas
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| | - Sebastian Brauchi
- Physiology Department; Faculty of Medicine; Universidad Austral de Chile; Campus Isla Teja, Valdivia, Chile
| |
Collapse
|
43
|
Zhao Z, Fan H, Higgins T, Qi J, Haines D, Trivett A, Oppenheim JJ, Wei H, Li J, Lin H, Howard OMZ. Fufang Kushen injection inhibits sarcoma growth and tumor-induced hyperalgesia via TRPV1 signaling pathways. Cancer Lett 2014; 355:232-41. [PMID: 25242356 DOI: 10.1016/j.canlet.2014.08.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 08/26/2014] [Accepted: 08/27/2014] [Indexed: 12/22/2022]
Abstract
Cancer pain is a deleterious consequence of tumor growth and related inflammation. Opioids and anti-inflammatory drugs provide first line treatment for cancer pain, but both are limited by side effects. Fufang Kushen injection (FKI) is GMP produced, traditional Chinese medicine used alone or with chemotherapy to reduce cancer-associated pain. FKI limited mouse sarcoma growth both in vivo and in vitro, in part, by reducing the phosphorylation of ERK and AKT kinases and BAD. FKI inhibited TRPV1 mediated capsaicin-induced ERK phosphorylation and reduced tumor-induced proinflammatory cytokine production. Thus, FKI limited cancer pain both directly by blocking TRPV1 signaling and indirectly by reducing tumor growth.
Collapse
Affiliation(s)
- Zhizheng Zhao
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA; Guang An Men Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Huiting Fan
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA; Guang An Men Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Tim Higgins
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA
| | - Jia Qi
- Neuronal Networks Section, Intramural Research Program, National Institute on Drug Abuse, NIH, 251 Bayview Blvd, Baltimore, MD 21224, USA
| | - Diana Haines
- Leidos Biomedical, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Anna Trivett
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA
| | - Joost J Oppenheim
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA
| | - Hou Wei
- Guang An Men Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Li
- Guang An Men Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Hongsheng Lin
- Guang An Men Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - O M Zack Howard
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA.
| |
Collapse
|
44
|
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
|
45
|
Shibukawa Y, Sato M, Kimura M, Sobhan U, Shimada M, Nishiyama A, Kawaguchi A, Soya M, Kuroda H, Katakura A, Ichinohe T, Tazaki M. Odontoblasts as sensory receptors: transient receptor potential channels, pannexin-1, and ionotropic ATP receptors mediate intercellular odontoblast-neuron signal transduction. Pflugers Arch 2014; 467:843-63. [PMID: 24939701 DOI: 10.1007/s00424-014-1551-x] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/16/2014] [Accepted: 06/05/2014] [Indexed: 01/09/2023]
Abstract
Various stimuli induce pain when applied to the surface of exposed dentin. However, the mechanisms underlying dentinal pain remain unclear. We investigated intercellular signal transduction between odontoblasts and trigeminal ganglion (TG) neurons following direct mechanical stimulation of odontoblasts. Mechanical stimulation of single odontoblasts increased the intracellular free calcium concentration ([Ca(2+)]i) by activating the mechanosensitive-transient receptor potential (TRP) channels TRPV1, TRPV2, TRPV4, and TRPA1, but not TRPM8 channels. In cocultures of odontoblasts and TG neurons, increases in [Ca(2+)]i were observed not only in mechanically stimulated odontoblasts, but also in neighboring odontoblasts and TG neurons. These increases in [Ca(2+)]i were abolished in the absence of extracellular Ca(2+) and in the presence of mechanosensitive TRP channel antagonists. A pannexin-1 (ATP-permeable channel) inhibitor and ATP-degrading enzyme abolished the increases in [Ca(2+)]i in neighboring odontoblasts and TG neurons, but not in the stimulated odontoblasts. G-protein-coupled P2Y nucleotide receptor antagonists also inhibited the increases in [Ca(2+)]i. An ionotropic ATP (P2X3) receptor antagonist inhibited the increase in [Ca(2+)]i in neighboring TG neurons, but not in stimulated or neighboring odontoblasts. During mechanical stimulation of single odontoblasts, a connexin-43 blocker did not have any effects on the [Ca(2+)]i responses observed in any of the cells. These results indicate that ATP, released from mechanically stimulated odontoblasts via pannexin-1 in response to TRP channel activation, transmits a signal to P2X3 receptors on TG neurons. We suggest that odontoblasts are sensory receptor cells and that ATP released from odontoblasts functions as a neurotransmitter in the sensory transduction sequence for dentinal pain.
Collapse
|
46
|
Brito R, Sheth S, Mukherjea D, Rybak LP, Ramkumar V. TRPV1: A Potential Drug Target for Treating Various Diseases. Cells 2014; 3:517-45. [PMID: 24861977 PMCID: PMC4092862 DOI: 10.3390/cells3020517] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 12/11/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is an ion channel present on sensory neurons which is activated by heat, protons, capsaicin and a variety of endogenous lipids termed endovanilloids. As such, TRPV1 serves as a multimodal sensor of noxious stimuli which could trigger counteractive measures to avoid pain and injury. Activation of TRPV1 has been linked to chronic inflammatory pain conditions and peripheral neuropathy, as observed in diabetes. Expression of TRPV1 is also observed in non-neuronal sites such as the epithelium of bladder and lungs and in hair cells of the cochlea. At these sites, activation of TRPV1 has been implicated in the pathophysiology of diseases such as cystitis, asthma and hearing loss. Therefore, drugs which could modulate TRPV1 channel activity could be useful for the treatment of conditions ranging from chronic pain to hearing loss. This review describes the roles of TRPV1 in the normal physiology and pathophysiology of selected organs of the body and highlights how drugs targeting this channel could be important clinically.
Collapse
Affiliation(s)
- Rafael Brito
- Department of Pharmacology and Neuroscience, Southern Illinois University School of Medicine, Springfield, IL 62702, USA.
| | - Sandeep Sheth
- Department of Pharmacology and Neuroscience, Southern Illinois University School of Medicine, Springfield, IL 62702, USA.
| | - Debashree Mukherjea
- Department of Surgery (Otoloryngalogy), Southern Illinois University School of Medicine, Springfield, IL 62702, USA.
| | - Leonard P Rybak
- Department of Pharmacology and Neuroscience, Southern Illinois University School of Medicine, Springfield, IL 62702, USA.
| | - Vickram Ramkumar
- Department of Pharmacology and Neuroscience, Southern Illinois University School of Medicine, Springfield, IL 62702, USA.
| |
Collapse
|
47
|
Abstract
Transient receptor potential melastatin 8 (TRPM8) was originally cloned from prostate tissue. Shortly thereafter, the protein was identified as a cold- and menthol-activated ion channel in peripheral sensory neurons, where it plays a critical role in cold temperature detection. In this chapter, we review our current understanding of the molecular and biophysical properties, the pharmacology, and the modulation by signaling molecules of this TRP channel. Finally, we examine the physiological role of TRPM8 and its emerging link to various human diseases, including pain, prostate cancer, dry eye disease, and metabolic disorders.
Collapse
Affiliation(s)
- Laura Almaraz
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-CSIC, Avenida S. Ramón y Cajal s.n., San Juan de Alicante, 03550, Spain
| | | | | | | |
Collapse
|
48
|
Mergler S, Mertens C, Valtink M, Reinach PS, Székely VC, Slavi N, Garreis F, Abdelmessih S, Türker E, Fels G, Pleyer U. Functional significance of thermosensitive transient receptor potential melastatin channel 8 (TRPM8) expression in immortalized human corneal endothelial cells. Exp Eye Res 2013; 116:337-49. [PMID: 24135298 DOI: 10.1016/j.exer.2013.10.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 08/17/2013] [Accepted: 10/03/2013] [Indexed: 11/18/2022]
Abstract
Human corneal endothelial cells (HCEC) maintain appropriate tissue hydration and transparency by eliciting net ion transport coupled to fluid egress from the stroma into the anterior chamber. Such activity offsets tissue swelling caused by stromal imbibition of fluid. As corneal endothelial (HCE) transport function is modulated by temperature changes, we probed for thermosensitive transient receptor potential melastatin 8 (TRPM8) functional activity in immortalized human corneal endothelial cells (HCEC-12) and freshly isolated human corneal endothelial cells (HCEC) as a control. This channel is either activated upon lowering to 28 °C or by menthol, eucalyptol and icilin. RT-PCR and quantitative real-time PCR (qPCR) verified TRPM8 gene expression. Ca(2+) transients induced by either menthol (500 μmol/l), eucalyptol (3 mmol/l), or icilin (2-60 μmol/l) were identified using cell fluorescence imaging. The TRP channel blocker lanthanum III chloride (La(3+), 100 μmol/l) as well as the TRPM8 blockers BCTC (10 μmol/l) and capsazepine (CPZ, 10 μmol/l) suppressed icilin-induced Ca(2+) increases. In and outward currents induced by application of menthol (500 μmol/l) or icilin (50 μmol/l) were detected using the planar patch-clamp technique. A thermal transition from room temperature to ≈ 18 °C led to Ca(2+) increases that were inhibited by a TRPM8 blocker BCTC (10 μmol/l). Other thermosensitive TRP pathways whose heterogeneous Ca(2+) response patterns are suggestive of other Ca(2+) handling pathways were also detected upon strong cooling (≈10 °C). Taken together, functional TRPM8 expression in HCEC-12 and freshly dissociated HCEC suggests that HCE function can adapt to thermal variations through activation of this channel subtype.
Collapse
Affiliation(s)
- Stefan Mergler
- Charité - Universitätsmedizin Berlin, Campus Virchow-Clinic, Department of Ophthalmology, Augustenburger Platz 1, 13353 Berlin, Germany.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Chaudhari SS, Kadam AB, Khairatkar-Joshi N, Mukhopadhyay I, Karnik PV, Raghuram A, Rao SS, Vaiyapuri TS, Wale DP, Bhosale VM, Gudi GS, Sangana RR, Thomas A. Synthesis and pharmacological evaluation of novel N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides as TRPM8 antagonists. Bioorg Med Chem 2013; 21:6542-53. [PMID: 24055075 DOI: 10.1016/j.bmc.2013.08.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 08/14/2013] [Accepted: 08/16/2013] [Indexed: 10/26/2022]
Abstract
A novel series of N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides was identified as transient receptor potential melastatin 8 (TRPM8) channel blockers through analogue-based rational design, synthesis and screening. Details of the synthesis, effect of aryl groups and their substituents on in-vitro potency were studied. The effects of selected functional groups on the 4-position of the chromene ring were also studied, which showed interesting results. The 4-hydroxy derivatives showed excellent potency and selectivity. Optical resolution and screening of alcohols revealed that (R)-(-)-isomers were in general more potent than the corresponding (S)-(+)-isomers. The isomer (R)-(-)-10e (IC50: 8.9nM) showed a good pharmacokinetic profile upon oral dosing at 10mg/kg in Sprague-Dawley (SD) rats. The compound (R)-(-)-10e also showed excellent efficacy in relevant rodent models of neuropathic pain.
Collapse
Affiliation(s)
- Sachin S Chaudhari
- Glenmark Research Centre, Glenmark Pharmaceuticals Ltd., A-607, TTC Industrial Area, MIDC Mahape, Navi Mumbai 400 709, India
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Selescu T, Ciobanu AC, Dobre C, Reid G, Babes A. Camphor Activates and Sensitizes Transient Receptor Potential Melastatin 8 (TRPM8) to Cooling and Icilin. Chem Senses 2013; 38:563-75. [DOI: 10.1093/chemse/bjt027] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|