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Đukanović Đ, Suručić R, Bojić MG, Trailović SM, Škrbić R, Gagić Ž. Design of Novel TRPA1 Agonists Based on Structure of Natural Vasodilator Carvacrol-In Vitro and In Silico Studies. Pharmaceutics 2024; 16:951. [PMID: 39065648 PMCID: PMC11280049 DOI: 10.3390/pharmaceutics16070951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/23/2024] [Accepted: 06/29/2024] [Indexed: 07/28/2024] Open
Abstract
Considering the escalating global prevalence and the huge therapeutic demand for the treatment of hypertension, there is a persistent need to identify novel target sites for vasodilator action. This study aimed to investigate the role of TRPA1 channels in carvacrol-induced vasodilation and to design novel compounds based on carvacrol structure with improved activities. In an isolated tissue bath experiment, it was shown that 1 µM of the selective TRPA1 antagonist A967079 significantly (p < 0.001) reduced vasodilation induced by 3 mM of carvacrol. A reliable 3D-QSAR model with good statistical parameters was created (R2 = 0.83; Q2 = 0.59 and Rpred2 = 0.84) using 29 TRPA1 agonists. Obtained results from this model were used for the design of novel TRPA1 activators, and to predict their activity against TRPA1. Predicted pEC50 activities of these molecules range between 4.996 to 5.235 compared to experimental pEC50 of 4.77 for carvacrol. Molecular docking studies showed that designed molecules interact with similar amino acid residues of the TRPA1 channel as carvacrol, with eight compounds showing lower binding energies. In conclusion, carvacrol-induced vasodilation is partly mediated by the activation of TRPA1 channels. Combining different in silico approaches pointed out that the molecule D27 (2-[2-(hydroxymethyl)-4-methylphenyl]acetamide) is the best candidate for further synthesis and experimental evaluation in in vitro conditions.
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Affiliation(s)
- Đorđe Đukanović
- Centre for Biomedical Research, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (M.G.B.); (R.Š.)
- Department of Pharmacy, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (R.S.); (Ž.G.)
| | - Relja Suručić
- Department of Pharmacy, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (R.S.); (Ž.G.)
| | - Milica Gajić Bojić
- Centre for Biomedical Research, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (M.G.B.); (R.Š.)
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina
| | - Saša M. Trailović
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Ranko Škrbić
- Centre for Biomedical Research, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (M.G.B.); (R.Š.)
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina
| | - Žarko Gagić
- Department of Pharmacy, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (R.S.); (Ž.G.)
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Zheng H, Kim M, Kim C, Kim Y, Cho PS, Lim JY, Lee H, Yun HI, Choi J, Hwang SW. GnRH peripherally modulates nociceptor functions, exacerbating mechanical pain. Front Mol Neurosci 2024; 17:1160435. [PMID: 38783903 PMCID: PMC11111891 DOI: 10.3389/fnmol.2024.1160435] [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: 02/07/2023] [Accepted: 04/22/2024] [Indexed: 05/25/2024] Open
Abstract
The function of peripheral nociceptors, the neurons that relay pain signals to the brain, are frequently tuned by local and systemic modulator substances. In this context, neurohormonal effects are emerging as an important modulatory mechanism, but many aspects remain to be elucidated. Here we report that gonadotropin-releasing hormone (GnRH), a brain-specific neurohormone, can aggravate pain by acting on nociceptors in mice. GnRH and GnRHR, the receptor for GnRH, are expressed in a nociceptor subpopulation. Administration of GnRH and its analogue, localized for selectively affecting the peripheral neurons, deteriorated mechanical pain, which was reproducible in neuropathic conditions. Nociceptor function was promoted by GnRH treatment in vitro, which appears to involve specific sensory transient receptor potential ion channels. These data suggest that peripheral GnRH can positively modulate nociceptor activities in its receptor-specific manner, contributing to pain exacerbation. Our study indicates that GnRH plays an important role in neurohormonal pain modulation via a peripheral mechanism.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
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3
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Thi HD, Kim JY, Kim HJ, Kim WK, Kim SJ, Nam JH. Inhibition of Ca 2+-permeable TRPV3 and inflammatory cytokine release by honokiol and magnolol in human epidermal keratinocytes. Biochem Biophys Res Commun 2024; 692:149332. [PMID: 38043155 DOI: 10.1016/j.bbrc.2023.149332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
Transient receptor potential vanilloid-3 (TRPV3) ion channels are prominently expressed in keratinocytes, playing a vital role in skin functions. Honokiol and magnolol (H&M) the primary bioactive constituents in Magnolia officinalis extract, demonstrate anti-inflammatory and skin-protective properties. Nevertheless, the underlying mechanism regarding their effect on Ca2+-permeable ion channels remain unclear. Our purpose in this study is to investigate the effect of H&M on TRPV3 and cytokine release in normal human epidermal keratinocytes (NHEKs), including its gain-of-function (GOF) mutants (G573S and G573C) associated with Olmstead syndrome. We performed whole-cell patch-clamp, fura-2 spectrofluorimetry to investigate channels activity, CCK-8 assay to analyze cell death and enzyme-linked immunosorbent assay to assess the cytokine release from NHEKs. H&M inhibited the TRPV3 current (ITRPV3) and cytosolic calcium increase in NHEKs, HEK293T cells overexpressing hTRPV3 and its GOF mutants. Moreover, the release of pro-inflammatory cytokines (interleukin-6 and -8) from keratinocytes stimulated by TRPV3 agonist was effectively suppressed by H&M. Our findings provide insights into the mechanism underlying the anti-inflammatory effects of H&M, highlighting their potential in treating skin diseases.
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Affiliation(s)
- Huyen Dang Thi
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea
| | - Ji Yeong Kim
- Department of Physiology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Hyun Jong Kim
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea
| | - Woo Kyung Kim
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea; Department of Internal Medicine Graduate School of Medicine, Dongguk University, Gyeonggido, 10326, Republic of Korea.
| | - Sung Joon Kim
- Department of Physiology, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea.
| | - Joo Hyun Nam
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, 38066, Republic of Korea; Channelopathy Research Center (CRC), Dongguk University College of Medicine, Gyeonggi-do, 10326, Republic of Korea; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, 02114, Massachusetts, USA.
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Kalinovskii AP, Utkina LL, Korolkova YV, Andreev YA. TRPV3 Ion Channel: From Gene to Pharmacology. Int J Mol Sci 2023; 24:ijms24108601. [PMID: 37239947 DOI: 10.3390/ijms24108601] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Transient receptor potential vanilloid subtype 3 (TRPV3) is an ion channel with a sensory function that is most abundantly expressed in keratinocytes and peripheral neurons. TRPV3 plays a role in Ca2+ homeostasis due to non-selective ionic conductivity and participates in signaling pathways associated with itch, dermatitis, hair growth, and skin regeneration. TRPV3 is a marker of pathological dysfunctions, and its expression is increased in conditions of injury and inflammation. There are also pathogenic mutant forms of the channel associated with genetic diseases. TRPV3 is considered as a potential therapeutic target of pain and itch, but there is a rather limited range of natural and synthetic ligands for this channel, most of which do not have high affinity and selectivity. In this review, we discuss the progress in the understanding of the evolution, structure, and pharmacology of TRPV3 in the context of the channel's function in normal and pathological states.
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Affiliation(s)
- Aleksandr P Kalinovskii
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Lyubov L Utkina
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
| | - Yuliya V Korolkova
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
| | - Yaroslav A Andreev
- Department of Molecular Neurobiology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (IBCh RAS), 16/10 Miklukho-Maklay Str., 117997 Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Trbetskaya Str. 8, Bld. 2, 119991 Moscow, Russia
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Novel Insights into the Role of Keratinocytes-Expressed TRPV3 in the Skin. Biomolecules 2023; 13:biom13030513. [PMID: 36979447 PMCID: PMC10046267 DOI: 10.3390/biom13030513] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/02/2023] [Accepted: 03/01/2023] [Indexed: 03/16/2023] Open
Abstract
TRPV3 is a non-selective cation channel that is highly expressed in keratinocytes in the skin. Traditionally, keratinocytes-expressed TRPV3 is involved in multiple physiological and pathological functions of the skin, such as itching, heat pain, and hair development. Although the underlying mechanisms by which TRPV3 functions in vivo remain obscure, recent research studies suggest that several cytokines and EGFR signaling pathways may be involved. However, there have also been other studies with opposite results that question the role of TRPV3 in heat pain. In addition, an increasing number of studies have suggested a novel role of TRPV3 in promoting skin regeneration, indicating that TRPV3 may become a new potential target for regulating skin regeneration. This paper not only reviews the role of keratinocytes-expressed TRPV3 in the physiological and pathological processes of itching, heat pain, hair development, and skin regeneration, but also reviews the relationship between TRPV3 gene mutations and skin diseases such as atopic dermatitis (AD) and Olmsted syndrome (OS). This review will lay a foundation for further developing our understanding of the mechanisms by which TRPV3 is involved in itching, heat pain, and hair development, as well as the treatments for TRPV3-related skin diseases.
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Wang Y. Multidisciplinary Advances Address the Challenges in Developing Drugs against Transient Receptor Potential Channels to Treat Metabolic Disorders. ChemMedChem 2023; 18:e202200562. [PMID: 36530131 DOI: 10.1002/cmdc.202200562] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/01/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Transient receptor potential (TRP) channels are cation channels that regulate key physiological and pathological processes in response to a broad range of stimuli. Moreover, they systemically regulate the release of hormones, metabolic homeostasis, and complications of diabetes, which positions them as promising therapeutic targets to combat metabolic disorders. Nevertheless, there are significant challenges in the design of TRP ligands with high potency and durability. Herein we summarize the four challenges as hydrophobicity, selectivity, mono-target therapy, and interspecies discrepancy. We present 1134 TRP ligands with diversified modes of TRP-ligand interaction and provide a detailed discussion of the latest strategies, especially cryogenic electron microscopy (cryo-EM) and computational methods. We propose solutions to address the challenges with a critical analysis of advances in membrane partitioning, polypharmacology, biased agonism, and biochemical screening of transcriptional modulators. They are fueled by the breakthrough from cryo-EM, chemoinformatics and bioinformatics. The discussion is aimed to shed new light on designing next-generation drugs to treat obesity, diabetes and its complications, with optimal hydrophobicity, higher mode selectivity, multi-targeting and consistent activities between human and rodents.
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Affiliation(s)
- Yibing Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai, 200438, P. R. China.,Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, Shanghai, 200438, P. R. China
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7
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TRPV3: Structure, Diseases and Modulators. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020774. [PMID: 36677834 PMCID: PMC9865980 DOI: 10.3390/molecules28020774] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/04/2023] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
Transient receptor potential vanillin 3 (TRPV3) is a member of the transient receptor potential (TRP) superfamily. As a Ca2+-permeable nonselective cation channel, TRPV3 can recognize thermal stimulation (31-39 °C), and it plays an important regulatory role in temperature perception, pain transduction, skin physiology, inflammation, cancer and other diseases. TRPV3 is not only activated by the changes in the temperature, but it also can be activated by a variety of chemical and physical stimuli. Selective TRPV3 agonists and antagonists with regulatory effects and the physiological functions for clinical application are highly demanded. In recent years, significant progress has been made in the study of TRPV3, but there is still a lack of modulators with a strong affinity and excellent selectivity. This paper reviews the functional characteristics of TRPV3 in terms of the structure, diseases and the research on TRPV3 modulators.
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Kim Y, Kim C, Lee H, Kim M, Zheng H, Lim JY, Yun HI, Jeon M, Choi J, Hwang SW. Gpr83 Tunes Nociceptor Function, Controlling Pain. Neurotherapeutics 2023; 20:325-337. [PMID: 36352334 PMCID: PMC10119354 DOI: 10.1007/s13311-022-01327-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2022] [Indexed: 11/10/2022] Open
Abstract
The function of peripheral nociceptors is frequently tuned by the action of G protein-coupled receptors (GPRs) that are expressed in them, which contribute to pain alteration. Expanding new information on such GPRs and predicting their potential outcomes can help to construct new analgesic strategies based on their modulations. In this context, we attempted to present a new GPR not yet acknowledged for its pain association. Gpr83 exhibits relatively high expressions in the peripheral nervous system compared to other tissues when we mined and reconstructed Gene Expression Omnibus (GEO) metadata, which we confirmed using immunohistochemistry on murine dorsal root ganglia (DRG). When Gpr83 expression was silenced in DRG, neuronal and behavioral nociception were all downregulated. Pathologic pain in hind paw inflammation and chemotherapy-induced peripheral neuropathy were also alleviated by this Gpr83 knockdown. Dependent on exposure time, the application of a known endogenous Gpr83 ligand PEN showed differential effects on nociceptor responses in vitro. Localized PEN administration mitigated pain in vivo, probably following Gq/11-involved GPR downregulation caused by the relatively constant exposure. Collectively, this study suggests that Gpr83 action contributes to the tuning of peripheral pain sensitivity and thus indicates that Gpr83 can be among the potential GPR targets for pain modulation.
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Affiliation(s)
- Yerin Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Chaeeun Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Hojin Lee
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Minseok Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Haiyan Zheng
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Ji Yeon Lim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Hye-In Yun
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Minji Jeon
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Jungmin Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Korea.
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9
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Wang Y, Tan L, Jiao K, Xue C, Tang Q, Jiang S, Ren Y, Chen H, El-Aziz TMA, Abdelazeem KNM, Yu Y, Zhao F, Zhu MX, Cao Z. Scutellarein Attenuates Atopic Dermatitis by Selectively Inhibiting Transient Receptor Potential Vanilloid 3. Br J Pharmacol 2022; 179:4792-4808. [PMID: 35771623 DOI: 10.1111/bph.15913] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 06/08/2022] [Accepted: 06/23/2022] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Atopic dermatitis (AD) is one of the most common chronic inflammatory cutaneous diseases with unmet clinical needs. As a common ingredient found in several medicinal herbs with efficacy on cutaneous inflammatory diseases, Scutellarein (Scu) has been shown to possess anti-inflammatory and anti-proliferative activities. We aimed to evaluate the therapeutic efficacy of Scu against AD and its underlying molecular mechanism. EXPERIMENTAL APPROACH Efficacy of Scu on AD was evaluated in 2,4-dinitrofluorobenzene (DNFB) and carvacrol-induced dermatitis mouse models. Cytokine mRNA and serum IgE levels were examined using qPCR and ELISA, respectively. Voltage clamp recordings were used to measure currents mediated by transient receptor potential (TRP) channels. In silico docking, site-direct mutagenesis, and covalent modification were used to explore the binding pocket of Scu on TRPV3. KEY RESULTS Subcutaneous administration of Scu efficaciously suppresses DNFB and carvacrol-induced pruritus, epidermal hyperplasia and skin inflammation in wild type mice but has no additional benefit in Trpv3 knockout mice in the carvacrol model. Scu is a potent and selective TRPV3 channel allosteric negative modulator with an apparent affinity of 1.18 μM. Molecular docking coupled with site-direct mutagenesis and covalent modification of incorporated cysteine residues demonstrate that Scu targets the cavity formed between the pore helix and transmembrane helix S6. Moreover, Scu attenuates endogenous TRPV3 activity in human keratinocytes and inhibits carvacrol-induced proliferative and proinflammatory responses. CONCLUSIONS AND IMPLICATIONS Collectively, these data demonstrate that Scu ameliorates carvacrol-induced skin inflammation by directly inhibiting TRPV3, and TRPV3 represents a viable therapeutic target for AD treatment.
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Affiliation(s)
- Yujing Wang
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Liaoxi Tan
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Kejun Jiao
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Chu Xue
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Qinglian Tang
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Shan Jiang
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Younan Ren
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Hao Chen
- Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing, China
| | | | - Khalid N M Abdelazeem
- Radiation Biology Research Department, National Centre for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
| | - Ye Yu
- Department of Basic Medicine, School of Basic Medicine and Clinic Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Fang Zhao
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
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Neuberger A, Nadezhdin KD, Sobolevsky AI. Structural mechanism of TRPV3 channel inhibition by the anesthetic dyclonine. Nat Commun 2022; 13:2795. [PMID: 35589741 PMCID: PMC9120478 DOI: 10.1038/s41467-022-30537-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/05/2022] [Indexed: 02/02/2023] Open
Abstract
Skin diseases are common human illnesses that occur in all cultures, at all ages, and affect between 30% and 70% of individuals globally. TRPV3 is a cation-permeable TRP channel predominantly expressed in skin keratinocytes, implicated in cutaneous sensation and associated with numerous skin diseases. TRPV3 is inhibited by the local anesthetic dyclonine, traditionally used for topical applications to relieve pain and itch. However, the structural basis of TRPV3 inhibition by dyclonine has remained elusive. Here we present a cryo-EM structure of a TRPV3-dyclonine complex that reveals binding of the inhibitor in the portals which connect the membrane environment surrounding the channel to the central cavity of the channel pore. We propose a mechanism of TRPV3 inhibition in which dyclonine molecules stick out into the channel pore, creating a barrier for ion conductance. The allosteric binding site of dyclonine can serve as a template for the design of new TRPV3-targeting drugs.
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Affiliation(s)
- Arthur Neuberger
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA
| | - Kirill D Nadezhdin
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA
| | - Alexander I Sobolevsky
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY, USA.
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11
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Đukanović Đ, Gajic Bojic M, Marinkovic S, Trailovic SM, Stojiljković MP, Škrbić R. Vasorelaxant effect of monoterpene carvacrol on isolated human umbilical artery. Can J Physiol Pharmacol 2022; 100:755-762. [PMID: 35507953 DOI: 10.1139/cjpp-2021-0736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Carvacrol is the main compound of essential oils extracted primarily from Thymus and Origanum species. Its various biological activities were confirmed: antioxidant, anti-inflammatory, antibacterial, antifungal, anti-tumour, antinematodal and vasorelaxant action. Although vasodilation mediated by carvacrol was previously described, the exact mechanism of its action has not yet been established. Hence, the aim of this study was to investigate carvacrol vasoactivity on human umbilical arteries (HUA) and different pathways involved in its mechanism of action using tissue bath methodology. Carvacrol caused a significant decrease in vascular tension of 5-HT-pre-contracted umbilical arteries, with EC50 of 442.13 ± 33.8 µM (mean ± standard error of the mean - SEM). At 300 µM, carvacrol shifted downward the 5-HT concentration-response curve with statistical significance of p < 0.001 obtained for the four highest concentrations. At concentration of 1 mM, carvacrol completely abolished BaCl2-induced contraction in Ca2+-free Krebs-Ringer bicarbonate solution (p < 0.001). Isopentenyl pyrophosphate, the antagonist of TRPV3 channel, was able to decrease the efficacy of carvacrol (p < 0.001). The vasorelaxant effect of carvacrol seems to involve the blocking of L-type of Ca2+ channels on smooth muscle cells. However, the role of TRPV3 channels in carvacrol-induced vasodilation of HUA cannot be excluded either.
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Affiliation(s)
- Đorđe Đukanović
- University of Banja Luka Faculty of Medicine, 469576, Centre for Biomedical Research, Banja Luka, Bosnia and Herzegovina;
| | - Milica Gajic Bojic
- University of Banja Luka Faculty of Medicine, 469576, Centre for Biomedical Research, Banja Luka, Bosnia and Herzegovina;
| | - Sonja Marinkovic
- University of Banja Luka Faculty of Medicine, 469576, Centre for Biomedical Research, Banja Luka, Bosnia and Herzegovina;
| | - Sasa M Trailovic
- University of Belgrade, 54801, Pharmacology and Toxicology, Bulevar oslobodjenja 18, Beograd, Serbia, 11000;
| | - Miloš P Stojiljković
- University of Banja Luka Faculty of Medicine, 469576, Department of Pharmacology, Toxicology and Clinical Pharmacology, Banja Luka, Bosnia and Herzegovina, 78000;
| | - Ranko Škrbić
- University of Banja Luka Faculty of Medicine, 469576, Banja Luka, Bosnia and Herzegovina, 78000;
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12
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Qi H, Shi Y, Wu H, Niu C, Sun X, Wang K. Inhibition of temperature-sensitive TRPV3 channel by two natural isochlorogenic acid isomers for alleviation of dermatitis and chronic pruritus. Acta Pharm Sin B 2022; 12:723-734. [PMID: 35256942 PMCID: PMC8897028 DOI: 10.1016/j.apsb.2021.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/13/2021] [Accepted: 07/30/2021] [Indexed: 12/13/2022] Open
Abstract
Genetic gain-of-function mutations of warm temperature-sensitive transient receptor potential vanilloid 3 (TRPV3) channel cause Olmsted syndrome characterized by severe itching and keratoderma, indicating that pharmacological inhibition of TRPV3 may hold promise for therapy of chronic pruritus and skin diseases. However, currently available TRPV3 tool inhibitors are either nonselective or less potent, thus impeding the validation of TRPV3 as therapeutic target. Using whole-cell patch-clamp and single-channel recordings, we report the identification of two natural dicaffeoylquinic acid isomers isochlorogenic acid A (IAA) and isochlorogenic acid B (IAB) that selectively inhibit TRPV3 currents with IC50 values of 2.7 ± 1.3 and 0.9 ± 0.3 μmol/L, respectively, and reduce the channel open probability to 3.7 ± 1.2% and 3.2 ± 1.1% from 26.9 ± 5.5%, respectively. In vivo evaluation confirms that both IAA and IAB significantly reverse the ear swelling of dermatitis and chronic pruritus. Furthermore, the isomer IAB is able to rescue the keratinocyte death induced by TRPV3 agonist carvacrol. Molecular docking combined with site-directed mutations reveals two residues T636 and F666 critical for the binding of the two isomers. Taken together, our identification of isochlorogenic acids A and B that act as specific TRPV3 channel inhibitors and gating modifiers not only provides an essential pharmacological tool for further investigation of the channel pharmacology and pathology, but also holds developmental potential for treatment of dermatitis and chronic pruritus.
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Key Words
- 2-APB, 2-aminoethoxydiphenyl borate
- AITC, allyl isothiocyanate
- Chronic pruritus
- DMEM, Dulbecco's modified Eagle's medium
- Dermatitis
- Dicaffeoylquinic acid
- Ear swelling
- Gate modifier
- HEK293, human embryonic kidney 293
- HaCaT, human immortalized nontumorigenic keratinocyte
- IAA, isochlorogenic acid A
- IAB, isochlorogenic acid B
- OS, Olmsted syndrome
- Olmsted syndrome
- RR, ruthenium red
- TRP, transient receptor potential
- TRPV3
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13
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Fatima M, Slade H, Horwitz L, Shi A, Liu J, McKinstry D, Villani T, Xu H, Duan B. Abnormal Somatosensory Behaviors Associated With a Gain-of-Function Mutation in TRPV3 Channels. Front Mol Neurosci 2022; 14:790435. [PMID: 35058747 PMCID: PMC8764439 DOI: 10.3389/fnmol.2021.790435] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Thermosensitive transient receptor potential V3 (TRPV3) is a polymodal receptor implicated in nociceptive, thermoceptive, pruritoceptive, and inflammatory pathways. Reports focused on understanding the role of TRPV3 in thermoception or nociception are not conclusive. Previous studies also show that aberrant hyperactivity of TRPV3 channels results in spontaneous itch and dermatitis-like symptoms, but the resultant behavior is highly dependent on the background of the animal and the skin microbiome. To determine the function of hyperactive TRPV3 channels in somatosensory sensations, we tested different somatosensory behaviors using a genetic mouse model that carries a gain-of-function point mutation G573S in the Trpv3 gene (Trpv3G573S). Here we report that Trpv3G573S mutants show reduced perception of cold, acetone-induced cooling, punctate, and sharp mechanical pain. By contrast, locomotion, noxious heat, touch, and mechanical itch are unaffected in Trpv3G573S mice. We fail to observe any spontaneous itch responses and/or dermatitis in Trpv3G573S mutants under specific pathogen (Staphylococcus aureus)-free conditions. However, we find that the scratching events in response to various pruritogens are dramatically decreased in Trpv3G573S mice in comparison to wild-type littermates. Interestingly, we observe sensory hypoinnervation of the epidermis in Trpv3G573S mutants, which might contribute to the deficits in acute mechanical pain, cool, cold, and itch sensations.
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14
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Lv M, Wu H, Qu Y, Wu S, Wang J, Wang C, Luan Y, Zhang Z. The design and synthesis of transient receptor potential vanilloid 3 inhibitors with novel skeleton. Bioorg Chem 2021; 114:105115. [PMID: 34175725 DOI: 10.1016/j.bioorg.2021.105115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/28/2021] [Accepted: 06/18/2021] [Indexed: 12/30/2022]
Abstract
Transient receptor potential vanilloid 3 (TRPV3) channel as a member of thermo TRPV subfamily is primarily expressed in the keratinocytes of the skin and sensory neurons, and plays critical roles in various physiological and pathological processes such as inflammation, pain sensation and skin disorders. However, TRPV3 studies have been challenging, in part due to a lack of research tools such as selective antagonists. Recently, we synthesized a series of cinnamate ester derivatives and evaluated their inhibitory activities on human TRPV3 channels expressed in HEK293 cells using whole-cell patch clamp recordings. And, we identified two potent TRPV3 antagonists 7c and 8c which IC50 values were 1.05 μM and 86 nM, respectively. It also showed good selectivity to other subfamily members of TRPV, such as TRPV1 and TRPV4.
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Affiliation(s)
- Mengqi Lv
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Han Wu
- Department of Pharmacology, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Yaxuan Qu
- Department of Pharmacology, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Siyi Wu
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Junxia Wang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Congcong Wang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Yepeng Luan
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China
| | - Zhongyin Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao, Shandong, China.
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15
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Liu Q, Wang J, Wei X, Hu J, Ping C, Gao Y, Xie C, Wang P, Cao P, Cao Z, Yu Y, Li D, Yao J. Therapeutic inhibition of keratinocyte TRPV3 sensory channel by local anesthetic dyclonine. eLife 2021; 10:e68128. [PMID: 33876725 PMCID: PMC8112869 DOI: 10.7554/elife.68128] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
The multimodal sensory channel transient receptor potential vanilloid-3 (TRPV3) is expressed in epidermal keratinocytes and implicated in chronic pruritus, allergy, and inflammation-related skin disorders. Gain-of-function mutations of TRPV3 cause hair growth disorders in mice and Olmsted syndrome in humans. Nevertheless, whether and how TRPV3 could be therapeutically targeted remains to be elucidated. We here report that mouse and human TRPV3 channel is targeted by the clinical medication dyclonine that exerts a potent inhibitory effect. Accordingly, dyclonine rescued cell death caused by gain-of-function TRPV3 mutations and suppressed pruritus symptoms in vivo in mouse model. At the single-channel level, dyclonine inhibited TRPV3 open probability but not the unitary conductance. By molecular simulations and mutagenesis, we further uncovered key residues in TRPV3 pore region that could toggle the inhibitory efficiency of dyclonine. The functional and mechanistic insights obtained on dyclonine-TRPV3 interaction will help to conceive therapeutics for skin inflammation.
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Affiliation(s)
- Qiang Liu
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Jin Wang
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Xin Wei
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Juan Hu
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Conghui Ping
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Yue Gao
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Chang Xie
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Peiyu Wang
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
| | - Peng Cao
- Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese MedicineNanjingChina
| | - Zhengyu Cao
- State Key Laboratory of Natural Medicines and Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, School of Traditional Chinese Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Ye Yu
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical UniversityNanjingChina
| | - Dongdong Li
- Sorbonne Université, Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, Inserm U1130ParisFrance
| | - Jing Yao
- State Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Wuhan UniversityWuhanChina
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16
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Cho PS, Lee HK, Choi YI, Choi SI, Lim JY, Kim M, Kim H, Jung SJ, Hwang SW. GPR171 Activation Modulates Nociceptor Functions, Alleviating Pathologic Pain. Biomedicines 2021; 9:biomedicines9030256. [PMID: 33807709 PMCID: PMC8001436 DOI: 10.3390/biomedicines9030256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/20/2021] [Accepted: 02/21/2021] [Indexed: 01/04/2023] Open
Abstract
Modulation of the function of somatosensory neurons is an important analgesic strategy, requiring the proposal of novel molecular targets. Many G-protein-coupled receptors (GPRs) have been deorphanized, but the receptor locations, outcomes due to their activations, and their signal transductions remain to be elucidated, regarding the somatosensory nociceptor function. Here we report that GPR171, expressed in a nociceptor subpopulation, attenuated pain signals via Gi/o-coupled modulation of the activities of nociceptive ion channels when activated by its newly found ligands. Administration of its natural peptide ligand and a synthetic chemical ligand alleviated nociceptor-mediated acute pain aggravations and also relieved pathologic pain at nanomolar and micromolar ranges. This study suggests that functional alteration of the nociceptor neurons by GPR171 signaling results in pain alleviation and indicates that GPR171 is a promising molecular target for peripheral pain modulation.
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Affiliation(s)
- Pyung Sun Cho
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; (P.S.C.); (S.I.C.); (J.Y.L.); (M.K.)
- Department of Physiology, College of Medicine, Korea University, Seoul 02841, Korea
| | - Han Kyu Lee
- Department of Physiology, College of Medicine, Hanyang University, Seoul 04763, Korea; (H.K.L.); (Y.I.C.)
| | - Young In Choi
- Department of Physiology, College of Medicine, Hanyang University, Seoul 04763, Korea; (H.K.L.); (Y.I.C.)
| | - Seung In Choi
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; (P.S.C.); (S.I.C.); (J.Y.L.); (M.K.)
- Department of Physiology, College of Medicine, Korea University, Seoul 02841, Korea
| | - Ji Yeon Lim
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; (P.S.C.); (S.I.C.); (J.Y.L.); (M.K.)
- Department of Physiology, College of Medicine, Korea University, Seoul 02841, Korea
| | - Minseok Kim
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; (P.S.C.); (S.I.C.); (J.Y.L.); (M.K.)
- Department of Physiology, College of Medicine, Korea University, Seoul 02841, Korea
| | - Hyun Kim
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea;
| | - Sung Jun Jung
- Department of Physiology, College of Medicine, Hanyang University, Seoul 04763, Korea; (H.K.L.); (Y.I.C.)
- Correspondence: (S.J.J.); (S.W.H.)
| | - Sun Wook Hwang
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Korea; (P.S.C.); (S.I.C.); (J.Y.L.); (M.K.)
- Department of Physiology, College of Medicine, Korea University, Seoul 02841, Korea
- Correspondence: (S.J.J.); (S.W.H.)
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17
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Oultram JMJ, Pegler JL, Bowser TA, Ney LJ, Eamens AL, Grof CPL. Cannabis sativa: Interdisciplinary Strategies and Avenues for Medical and Commercial Progression Outside of CBD and THC. Biomedicines 2021; 9:biomedicines9030234. [PMID: 33652704 PMCID: PMC7996784 DOI: 10.3390/biomedicines9030234] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/16/2021] [Accepted: 02/23/2021] [Indexed: 12/11/2022] Open
Abstract
Cannabis sativa (Cannabis) is one of the world’s most well-known, yet maligned plant species. However, significant recent research is starting to unveil the potential of Cannabis to produce secondary compounds that may offer a suite of medical benefits, elevating this unique plant species from its illicit narcotic status into a genuine biopharmaceutical. This review summarises the lengthy history of Cannabis and details the molecular pathways that underpin the production of key secondary metabolites that may confer medical efficacy. We also provide an up-to-date summary of the molecular targets and potential of the relatively unknown minor compounds offered by the Cannabis plant. Furthermore, we detail the recent advances in plant science, as well as synthetic biology, and the pharmacology surrounding Cannabis. Given the relative infancy of Cannabis research, we go on to highlight the parallels to previous research conducted in another medically relevant and versatile plant, Papaver somniferum (opium poppy), as an indicator of the possible future direction of Cannabis plant biology. Overall, this review highlights the future directions of cannabis research outside of the medical biology aspects of its well-characterised constituents and explores additional avenues for the potential improvement of the medical potential of the Cannabis plant.
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Affiliation(s)
- Jackson M. J. Oultram
- Centre for Plant Science, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; (J.M.J.O.); (J.L.P.); (A.L.E.)
| | - Joseph L. Pegler
- Centre for Plant Science, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; (J.M.J.O.); (J.L.P.); (A.L.E.)
| | - Timothy A. Bowser
- CannaPacific Pty Ltd., 109 Ocean Street, Dudley, NSW 2290, Australia;
| | - Luke J. Ney
- School of Psychological Sciences, University of Tasmania, Hobart, TAS 7005, Australia;
| | - Andrew L. Eamens
- Centre for Plant Science, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; (J.M.J.O.); (J.L.P.); (A.L.E.)
| | - Christopher P. L. Grof
- Centre for Plant Science, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia; (J.M.J.O.); (J.L.P.); (A.L.E.)
- CannaPacific Pty Ltd., 109 Ocean Street, Dudley, NSW 2290, Australia;
- Correspondence: ; Tel.: +612-4921-5858
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18
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Han Y, Luo A, Kamau PM, Takomthong P, Hu J, Boonyarat C, Luo L, Lai R. A plant-derived TRPV3 inhibitor suppresses pain and itch. Br J Pharmacol 2021; 178:1669-1683. [PMID: 33501656 DOI: 10.1111/bph.15390] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 11/19/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE Itching is the most frequent pathology in dermatology that has significant impacts on people's mental health and social life. Transient receptor potential vanilloid 3 (TRPV3) channel is a promising target for treating pruritus. However, few selecetive and potent antagonists have been reported. This study was designed to identify selective TRPV3 antagonist and elucidate its anti-pruritus pharmacology. EXPERIMENTAL APPROACH FlexStation and calcium fluorescence imaging were conducted to track the functional compounds. Whole-cell patch clamp was used to record itch-related ion channel currents. Homologous recombination and site-directed mutagenesis were employed to construct TRPV3 channel chimeras and point mutations for exploring pharmacological mechanism. Mouse models were used for in vivo anti-pruritus assay. KEY RESULTS An acridone alkaloid (citrusinine-II) was purified and characterized from Atalantia monophylla. It directly interacts with Y564 within S4 helix of TRPV3 to selectively inhibit the channel with a half maximal inhibitory concentration (IC50 ) of 12.43 μM. Citrusinine-II showed potential efficacy to attenuate both chronic and acute itch. Intradermal administration of citrusinine-II (143 ng/skin site) nearly completely inhibited itch behaviours. It also shows significant analgesic effects. Little side effects of the compound are observed. CONCLUSION AND IMPLICATIONS By acting as a selective and potent inhibitor of TRPV3 channel, citrusinine-II shows valuable therapeutic effects in pruritus animal models and is a promising candidate drug and/or lead molecule for the development of anti-pruritus drugs.
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Affiliation(s)
- Yalan Han
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Anna Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Peter Muiruri Kamau
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, China.,University of Chinese Academy of Sciences, Beijing, China.,Sino-African Joint Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | | | - Jingmei Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Chantana Boonyarat
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Lei Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, China
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, China.,Sino-African Joint Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, Kunming Primate Research Center and National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), Institute of Zoology, Kunming, China
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19
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TRPing to the Point of Clarity: Understanding the Function of the Complex TRPV4 Ion Channel. Cells 2021; 10:cells10010165. [PMID: 33467654 PMCID: PMC7830798 DOI: 10.3390/cells10010165] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 02/07/2023] Open
Abstract
The transient receptor potential vanilloid 4 channel (TRPV4) belongs to the mammalian TRP superfamily of cation channels. TRPV4 is ubiquitously expressed, activated by a disparate array of stimuli, interacts with a multitude of proteins, and is modulated by a range of post-translational modifications, the majority of which we are only just beginning to understand. Not surprisingly, a great number of physiological roles have emerged for TRPV4, as have various disease states that are attributable to the absence, or abnormal functioning, of this ion channel. This review will highlight structural features of TRPV4, endogenous and exogenous activators of the channel, and discuss the reported roles of TRPV4 in health and disease.
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20
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Mariqueo TA, Zúñiga-Hernández J. Omega-3 derivatives, specialized pro-resolving mediators: Promising therapeutic tools for the treatment of pain in chronic liver disease. Prostaglandins Leukot Essent Fatty Acids 2020; 158:102095. [PMID: 32450460 DOI: 10.1016/j.plefa.2020.102095] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/02/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022]
Abstract
The main causes of liver injury are associated with inflammation and permanent damage. They can cause chronic liver disease (CLD), which is mainly related to viral hepatitis, alcohol consumption and non-alcoholic steatohepatitis, leading to fibrosis, cirrhosis and hepatocellular carcinoma. These conditions prevent the liver from working normally and make it begin to fail, which in turn may prompt a liver transplant. CLD and cirrhosis are the eleventh cause of death worldwide. At present, there are no approved pharmacological treatments to prevent, treat or resolve liver fibrosis. The prevalence of pain in the hepatic disease is elevated with ranges between 30% and 40%. Most of the pain drugs require hepatic function; therefore, the suitable control of pain is still a clinical challenge. Specialized pro-resolving mediators (SPM): lipoxins, resolvins, protectins and maresins, are potent endogenous molecules (nM concentrations) that modulate inflammatory body responses by reducing neutrophil infiltration, macrophage activity and pain sensitization. SPM have anti-inflammatory properties, stimulate tissue resolution, repair and regeneration, and exhibit anti-nociceptive actions. Furthermore, SPM were tried on different cellular, animal models and human observational data of liver injury, improving the pathogenesis of inflammation and fibrosis. In the present work, we will describe recent evidence that suggests that SPM can be used as a therapeutic option for CLD. Additionally, we will examine the role of SPM in the control of pain in pathologies associated with liver injury.
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Affiliation(s)
- T A Mariqueo
- Centro de Investigaciones Medicas, Escuela de Medicina, Universidad de Talca, Talca, Chile
| | - J Zúñiga-Hernández
- Centro de Investigaciones Medicas, Escuela de Medicina, Universidad de Talca, Talca, Chile.
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21
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Seo SH, Kim S, Kim SE, Chung S, Lee SE. Enhanced Thermal Sensitivity of TRPV3 in Keratinocytes Underlies Heat-Induced Pruritogen Release and Pruritus in Atopic Dermatitis. J Invest Dermatol 2020; 140:2199-2209.e6. [PMID: 32247859 DOI: 10.1016/j.jid.2020.02.028] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 01/17/2020] [Accepted: 02/21/2020] [Indexed: 01/30/2023]
Abstract
Itch in atopic dermatitis (AD) is aggravated under warm conditions. Transient receptor potential vanilloid (TRPV) 3, a member of the thermosensitive transient receptor potential channels, is activated by innocuous heat and is abundantly expressed in keratinocytes. The potential role of TRPV3 in itch is illustrated in TRPV3 channelopathies of humans and mice. However, the role of TRPV3 in heat-induced itch in AD and the underlying mechanisms are unclear. Here we showed that keratinocytes isolated from patients with AD exhibit enhanced expression and heat sensitivity with hyperactive channel function of TRPV3. Heat stimulus induced enhanced secretion of thymic stromal lymphopoietin, nerve growth factor, and prostaglandin E2 by keratinocytes from patients with AD through TRPV3 activation. TRPV3 agonists increased thymic stromal lymphopoietin, nerve growth factor, prostaglandin E2, and IL-33 production in human keratinocytes and induced scratching behavior upon intradermal injection in mice. TRPV3 was upregulated in the skin of MC903-induced AD mouse model. Heat stimulation to MC903-treated mice increased scratching behavior and produced higher levels of thymic stromal lymphopoietin, nerve growth factor, prostaglandin E2, and IL-33 from the epidermis, which were attenuated by pharmacologic inhibition of TRPV3. Moreover, neutralization of thymic stromal lymphopoietin reduced heat-evoked scratching in MC903-challenged mice. These results suggest that TRPV3 is a potential therapeutic target for heat-induced itch in AD.
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Affiliation(s)
- Seong Hoon Seo
- Department of Dermatology and Cutaneous Biology Research Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sohyun Kim
- Brain Korea 21 Plus Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - Song-Ee Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seungsoo Chung
- Brain Korea 21 Plus Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Eun Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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22
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Transient Receptor Potential Vanilloid 3 (TRPV3) in the Cerebellum of Rat and Its Role in Motor Coordination. Neuroscience 2020; 424:121-132. [DOI: 10.1016/j.neuroscience.2019.10.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/11/2019] [Accepted: 10/28/2019] [Indexed: 12/11/2022]
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23
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Tzschentke TM. Pharmacology of bisphosphonates in pain. Br J Pharmacol 2019; 178:1973-1994. [PMID: 31347149 DOI: 10.1111/bph.14799] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 07/11/2019] [Accepted: 07/19/2019] [Indexed: 01/15/2023] Open
Abstract
The treatment of pain, in particular, chronic pain, remains a clinical challenge. This is particularly true for pain associated with severe or rare conditions, such as bone cancer pain, vulvodynia, or complex regional pain syndrome. Over the recent years, there is an increasing interest in the potential of bisphosphonates in the treatment of pain, although there are few papers describing antinociceptive and anti-hypersensitizing effects of bisphosphonates in various animal models of pain. There is also increasing evidence for clinical efficacy of bisphosphonates in chronic pain states, although the number of well-controlled studies is still limited. However, the mechanisms underlying the analgesic effects of bisphosphonates are still largely elusive. This review provides an overview of preclinical and clinical studies of bisphosphonates in pain and discusses various pharmacological mechanisms that have been postulated to explain their analgesic effects. LINKED ARTICLES: This article is part of a themed issue on The molecular pharmacology of bone and cancer-related bone diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.9/issuetoc.
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Dhakal S, Lee Y. Transient Receptor Potential Channels and Metabolism. Mol Cells 2019; 42:569-578. [PMID: 31446746 PMCID: PMC6715338 DOI: 10.14348/molcells.2019.0007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 07/27/2019] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Transient receptor potential (TRP) channels are nonselective cationic channels, conserved among flies to humans. Most TRP channels have well known functions in chemosensation, thermosensation, and mechanosensation. In addition to being sensing environmental changes, many TRP channels are also internal sensors that help maintain homeostasis. Recent improvements to analytical methods for genomics and metabolomics allow us to investigate these channels in both mutant animals and humans. In this review, we discuss three aspects of TRP channels, which are their role in metabolism, their functional characteristics, and their role in metabolic syndrome. First, we introduce each TRP channel superfamily and their particular roles in metabolism. Second, we provide evidence for which metabolites TRP channels affect, such as lipids or glucose. Third, we discuss correlations between TRP channels and obesity, diabetes, and mucolipidosis. The cellular metabolism of TRP channels gives us possible therapeutic approaches for an effective prophylaxis of metabolic syndromes.
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Affiliation(s)
- Subash Dhakal
- Department of Bio and Fermentation Convergence Technology, Kookmin University, BK21 PLUS Project, Seoul 02707,
Korea
| | - Youngseok Lee
- Department of Bio and Fermentation Convergence Technology, Kookmin University, BK21 PLUS Project, Seoul 02707,
Korea
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25
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Weinberg R, Coulombe P, Polydefkis M, Caterina M. Pain mechanisms in hereditary palmoplantar keratodermas. Br J Dermatol 2019; 182:543-551. [DOI: 10.1111/bjd.17880] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2019] [Indexed: 12/12/2022]
Affiliation(s)
- R.L. Weinberg
- Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Department of Biological Chemistry Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Solomon H. Snyder Department of Neuroscience Neurosurgery Pain Research Institute Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
| | - P.A. Coulombe
- Department of Cell and Developmental Biology University of Michigan Medical School Ann Arbor MI 48109 U.S.A
- Department of Dermatology University of Michigan Medical School Ann Arbor MI 48109 U.S.A
| | - M. Polydefkis
- Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
| | - M.J. Caterina
- Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Department of Biological Chemistry Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
- Solomon H. Snyder Department of Neuroscience Neurosurgery Pain Research Institute Johns Hopkins School of Medicine Baltimore MD 21205 U.S.A
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26
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Qu Y, Wang G, Sun X, Wang K. Inhibition of the Warm Temperature–Activated Ca2+-Permeable Transient Receptor Potential Vanilloid TRPV3 Channel Attenuates Atopic Dermatitis. Mol Pharmacol 2019; 96:393-400. [DOI: 10.1124/mol.119.116962] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/03/2019] [Indexed: 12/20/2022] Open
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Thakore P, Earley S. Transient Receptor Potential Channels and Endothelial Cell Calcium Signaling. Compr Physiol 2019; 9:1249-1277. [PMID: 31187891 DOI: 10.1002/cphy.c180034] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The vascular endothelium is a broadly distributed and highly specialized organ. The endothelium has a number of functions including the control of blood vessels diameter through the production and release of potent vasoactive substances or direct electrical communication with underlying smooth muscle cells, regulates the permeability of the vascular barrier, stimulates the formation of new blood vessels, and influences inflammatory and thrombotic processes. Endothelial cells that make up the endothelium express a variety of cell-surface receptors and ion channels on the plasma membrane that are capable of detecting circulating hormones, neurotransmitters, oxygen tension, and shear stress across the vascular wall. Changes in these stimuli activate signaling cascades that initiate an appropriate physiological response. Increases in the global intracellular Ca2+ concentration and localized Ca2+ signals that occur within specialized subcellular microdomains are fundamentally important components of many signaling pathways in the endothelium. The transient receptor potential (TRP) channels are a superfamily of cation-permeable ion channels that act as a primary means of increasing cytosolic Ca2+ in endothelial cells. Consequently, TRP channels are vitally important for the major functions of the endothelium. In this review, we provide an in-depth discussion of Ca2+ -permeable TRP channels in the endothelium and their role in vascular regulation. © 2019 American Physiological Society. Compr Physiol 9:1249-1277, 2019.
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Affiliation(s)
- Pratish Thakore
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
| | - Scott Earley
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada, Reno School of Medicine, Reno, Nevada, USA
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28
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Zhang H, Sun X, Qi H, Ma Q, Zhou Q, Wang W, Wang K. Pharmacological Inhibition of the Temperature-Sensitive and Ca2+-Permeable Transient Receptor Potential Vanilloid TRPV3 Channel by Natural Forsythoside B Attenuates Pruritus and Cytotoxicity of Keratinocytes. J Pharmacol Exp Ther 2018; 368:21-31. [DOI: 10.1124/jpet.118.254045] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 10/26/2018] [Indexed: 01/06/2023] Open
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29
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Choi G, Yang TJ, Yoo S, Choi SI, Lim JY, Cho PS, Hwang SW. TRPV4-Mediated Anti-nociceptive Effect of Suberanilohydroxamic Acid on Mechanical Pain. Mol Neurobiol 2018; 56:444-453. [PMID: 29707744 DOI: 10.1007/s12035-018-1093-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 04/19/2018] [Indexed: 11/29/2022]
Abstract
Biological effects of suberanilohydroxamic acid (SAHA) have mainly been observed in the context of tumor suppression via epigenetic mechanisms, but other potential outcomes from its use have also been proposed in different fields such as pain modulation. Here, we tried to understand whether SAHA modulates specific pain modalities by a non-epigenetic unknown mechanism. From 24 h Complete Freund's Adjuvant (CFA)-inflamed hind paws of mice, mechanical and thermal inflammatory pain indices were collected with or without immediate intraplantar injection of SAHA. To examine the action of SAHA on sensory receptor-specific pain, transient receptor potential (TRP) ion channel-mediated pain indices were collected in the same manner of intraplantar treatment. Activities of primarily cultured sensory neurons and heterologous cells transfected with TRP channels were monitored to determine the molecular mechanism underlying the pain-modulating effect of SAHA. As a result, immediate and localized pretreatment with SAHA, avoiding an epigenetic intervention, acutely attenuated mechanical inflammatory pain and receptor-specific pain evoked by injection of a TRP channel agonist in animal models. We show that a component of the mechanisms involves TRPV4 inhibition based on in vitro intracellular Ca2+ imaging and electrophysiological assessments with heterologous expression systems and cultured sensory neurons. Taken together, the present study provides evidence of a novel off-target action and its mechanism of SAHA in its modality-specific anti-nociceptive effect and suggests the utility of this compound for pharmacological modulation of pain.
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Affiliation(s)
- Geunyeol Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Tae-Jin Yang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Sungjae Yoo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Seung-In Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Ji Yeon Lim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Pyung Sun Cho
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea. .,Department of Physiology, Korea University College of Medicine, Seoul, 02841, South Korea.
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30
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Pires PW, Earley S. Redox regulation of transient receptor potential channels in the endothelium. Microcirculation 2018; 24. [PMID: 27809396 DOI: 10.1111/micc.12329] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 10/31/2016] [Indexed: 01/08/2023]
Abstract
ROS and RNS are important mediators of signaling pathways in the endothelium. Specific members of the TRP superfamily of cation channels act as important Ca2+ influx pathways in endothelial cells and are involved in endothelium-dependent vasodilation, regulation of barrier permeability, and angiogenesis. ROS and RNS can modulate the activity of certain TRP channels mainly by modifying specific cysteine residues or by stimulating the production of second messengers. In this review, we highlight the recent literature describing redox regulation of TRP channel activity in endothelial cells as well as the physiological importance of these pathways and implication for cardiovascular diseases.
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Affiliation(s)
- Paulo Wagner Pires
- Department of Pharmacology, Cardiovascular Research Center, Reno School of Medicine, University of Nevada, Reno, NV, USA
| | - Scott Earley
- Department of Pharmacology, Cardiovascular Research Center, Reno School of Medicine, University of Nevada, Reno, NV, USA
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31
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Ambrus L, Kelemen B, Szabó T, Bíró T, Tóth BI. Human podocytes express functional thermosensitive TRPV channels. Br J Pharmacol 2017; 174:4493-4507. [PMID: 28945920 DOI: 10.1111/bph.14052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 08/16/2017] [Accepted: 09/10/2017] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND PURPOSE Heat-sensitive transient receptor potential vanilloid (TRPV) channels are expressed in various epithelial tissues regulating, among else, barrier functions. Their expression is well established in the distal nephron; however, we have no data about their presence in podocytes. As podocytes are indispensable in the formation of the glomerular filtration barrier, we investigated the presence and function of Ca2+ -permeable TRPV1-4 channels in human podocyte cultures. EXPERIMENTAL APPROACH Expression of TRPV1-4 channels was investigated at protein (immunocytochemistry, Western blot) and mRNA (Q-PCR) level in a conditionally immortalized human podocyte cell line. Channel function was assessed by measuring intracellular Ca2+ concentration using Flou-4 Ca2+ -indicator dye and patch clamp electrophysiology upon applying various activators and inhibitors. KEY RESULTS Thermosensitive TRP channels were expressed in podocytes. The TRPV1-specific agonists capsaicin and resiniferatoxin did not affect the intracellular Ca2+ concentration. Cannabidiol, an activator of TRPV2 and TRPV4 channels, induced moderate Ca2+ -influxes, inhibited by both tranilast and HC067047, blockers of TRPV2 and TRPV4 channels respectively. The TRPV4-specific agonists GSK1016790A and 4α-phorbol 12,13-didecanoate induced robust Ca2+ -signals which were abolished by HC067047. Non-specific agonists of TRPV3 channels induced marked Ca2+ transients. However, TRPV3 channel blockers, ruthenium red and isopentenyl diphosphate only partly inhibited the responses and TRPV3 silencing was ineffective suggesting remarkable off-target effects of the compounds. CONCLUSION AND IMPLICATIONS Our results indicate the functional presence of TRPV4 and other thermosensitive TRPV channels in human podocytes and raise the possibility of their involvement in the regulation of glomerular filtration barrier.
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Affiliation(s)
- Lídia Ambrus
- DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, Medical Faculty, University of Debrecen, Debrecen, Hungary
| | - Balázs Kelemen
- DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, Medical Faculty, University of Debrecen, Debrecen, Hungary
| | - Tamás Szabó
- Department of Pediatrics, Medical Faculty, University of Debrecen, Debrecen, Hungary
| | - Tamás Bíró
- DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, Medical Faculty, University of Debrecen, Debrecen, Hungary.,Department of Immunology, Medical Faculty, University of Debrecen, Debrecen, Hungary
| | - Balázs István Tóth
- DE-MTA 'Lendület' Cellular Physiology Research Group, Department of Physiology, Medical Faculty, University of Debrecen, Debrecen, Hungary
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32
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Yoo S, Choi SI, Lee S, Song J, Yang C, Bang S, Kim SU, Min KH, Hwang SW. Endogenous TRPV4 Expression of a Hybrid Neuronal Cell Line N18D3 and Its Utilization to Find a Novel Synthetic Ligand. J Mol Neurosci 2017; 63:422-430. [PMID: 29090425 DOI: 10.1007/s12031-017-0993-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/18/2017] [Indexed: 11/24/2022]
Abstract
Primary sensory afferent neurons detect environmental and painful stimuli at their peripheral termini. A group of transient receptor potential ion channels (TRPs) are expressed in these neurons and constitute sensor molecules for the stimuli such as thermal, mechanical, and chemical insults. We examined whether a mouse sensory neuronal line, N18D3, shows the sensory TRP expressions and their functionality. In Ca2+ imaging and electrophysiology with these cells, putative TRPV4-mediated responses were observed. TRPV4-specific sensory modalities including sensitivity to a specific agonist, hypotonicity, or an elevated temperature were reproduced in N18D3 cells. Electrophysiological and pharmacological profiles conformed to those from native TRPV4 of primarily cultured neurons. The TRPV4 expression in N18D3 was also confirmed by RT-PCR and Western blot analyses. Thus, N18D3 cells may represent TRPV4-expressing sensory neurons. Further, using this cell lines, we discovered a novel synthetic TRPV4-specific agonist, MLV-0901. These results suggest that N18D3 is a reliable cell line for functional and pharmacological TRPV4 assays. The chemical information from the novel agonist will contribute to TRPV4-targeting drug design.
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Affiliation(s)
- Sungjae Yoo
- Department of Biomedical Sciences, Korea University College of Medicine, #722 Moonsook Bldg., Inchon-Ro 73, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Seung-In Choi
- Department of Biomedical Sciences, Korea University College of Medicine, #722 Moonsook Bldg., Inchon-Ro 73, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Seul Lee
- College of Pharmacy, Chung-Ang University, Heukseok-Ro 84, Dongjak-Gu, Seoul, 06974, South Korea
| | - Jiho Song
- College of Pharmacy, Chung-Ang University, Heukseok-Ro 84, Dongjak-Gu, Seoul, 06974, South Korea
| | - Chungmi Yang
- Department of Biomedical Sciences, Korea University College of Medicine, #722 Moonsook Bldg., Inchon-Ro 73, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Sangsu Bang
- Department of Biomedical Sciences, Korea University College of Medicine, #722 Moonsook Bldg., Inchon-Ro 73, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Seung Up Kim
- Medical Research Institute, Chung-Ang University School of Medicine, Seoul, 06974, South Korea.,Division of Neurology, Department of Medicine, UBC Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Kyung Hoon Min
- College of Pharmacy, Chung-Ang University, Heukseok-Ro 84, Dongjak-Gu, Seoul, 06974, South Korea.
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, #722 Moonsook Bldg., Inchon-Ro 73, Seongbuk-Gu, Seoul, 02841, South Korea.
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Ciardo MG, Ferrer-Montiel A. Lipids as central modulators of sensory TRP channels. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:1615-1628. [PMID: 28432033 DOI: 10.1016/j.bbamem.2017.04.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/13/2017] [Accepted: 04/15/2017] [Indexed: 12/13/2022]
Abstract
The transient receptor potential (TRP) ion channel family is involved in a diversity of physiological processes including sensory and homeostatic functions, as well as muscle contraction and vasomotor control. Their dysfunction contributes to the etiology of several diseases, being validated as therapeutic targets. These ion channels may be activated by physical or chemical stimuli and their function is highly influenced by signaling molecules activated by extracellular signals. Notably, as integral membrane proteins, lipid molecules also modulate their membrane location and function either by direct interaction with the channel structure or by modulating the physico-chemical properties of the cellular membrane. This lipid-based modulatory effect is being considered an alternative and promising approach to regulate TRP channel dysfunction in diseases. Here, we review the current progress in this exciting field highlighting a complex channel regulation by a large diversity of lipid molecules and suggesting some diseases that may benefit from a membrane lipid therapy. This article is part of a Special Issue entitled: Membrane Lipid Therapy: Drugs Targeting Biomembranes edited by Pablo V. Escribá.
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Affiliation(s)
| | - Antonio Ferrer-Montiel
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Av. De la Universidad s/n, Elche, Spain.
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34
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Wu JL, Zhou CX, Wu PJ, Xu J, Guo YQ, Xue F, Getachew A, Xu SF. Brain metabolomic profiling of eastern honey bee (Apis cerana) infested with the mite Varroa destructor. PLoS One 2017; 12:e0175573. [PMID: 28403242 PMCID: PMC5389839 DOI: 10.1371/journal.pone.0175573] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 03/28/2017] [Indexed: 01/26/2023] Open
Abstract
The mite Varroa destructor is currently the greatest threat to apiculture as it is causing a global decrease in honey bee colonies. However, it rarely causes serious damage to its native hosts, the eastern honey bees Apis cerana. To better understand the mechanism of resistance of A. cerana against the V. destructor mite, we profiled the metabolic changes that occur in the honey bee brain during V. destructor infestation. Brain samples were collected from infested and control honey bees and then measured using an untargeted liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based global metabolomics method, in which 7918 and 7462 ions in ESI+ and ESI- mode, respectively, were successfully identified. Multivariate statistical analyses were applied, and 64 dysregulated metabolites, including fatty acids, amino acids, carboxylic acid, and phospholipids, amongst others, were identified. Pathway analysis further revealed that linoleic acid metabolism; propanoate metabolism; and glycine, serine, and threonine metabolism were acutely perturbed. The data obtained in this study offer insight into the defense mechanisms of A. cerana against V. destructor mites and provide a better method for understanding the synergistic effects of parasitism on honey bee colonies.
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Affiliation(s)
- Jiang-Li Wu
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chun-Xue Zhou
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, Shandong Province, PR China
- National Animal Protozoa Laboratory and College of Veterinary Medicine, China Agricultural University, Beijing, PR China
| | - Peng-Jie Wu
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jin Xu
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yue-Qin Guo
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fei Xue
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Awraris Getachew
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shu-Fa Xu
- Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
- * E-mail:
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Ishchenko Y, Shakirzyanova A, Giniatullina R, Skorinkin A, Bart G, Turhanen P, Määttä JA, Mönkkönen J, Giniatullin R. Selective Calcium-Dependent Inhibition of ATP-Gated P2X3 Receptors by Bisphosphonate-Induced Endogenous ATP Analog ApppI. J Pharmacol Exp Ther 2017; 361:472-481. [PMID: 28404687 DOI: 10.1124/jpet.116.238840] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 04/07/2017] [Indexed: 12/30/2022] Open
Abstract
Pain is the most unbearable symptom accompanying primary bone cancers and bone metastases. Bone resorptive disorders are often associated with hypercalcemia, contributing to the pathologic process. Nitrogen-containing bisphosphonates (NBPs) are efficiently used to treat bone cancers and metastases. Apart from their toxic effect on cancer cells, NBPs also provide analgesia via poorly understood mechanisms. We previously showed that NBPs, by inhibiting the mevalonate pathway, induced formation of novel ATP analogs such as ApppI [1-adenosin-5'-yl ester 3-(3-methylbut-3-enyl) triphosphoric acid diester], which can potentially be involved in NBP analgesia. In this study, we used the patch-clamp technique to explore the action of ApppI on native ATP-gated P2X receptors in rat sensory neurons and rat and human P2X3, P2X2, and P2X7 receptors expressed in human embryonic kidney cells. We found that although ApppI has weak agonist activity, it is a potent inhibitor of P2X3 receptors operating in the nanomolar range. The inhibitory action of ApppI was completely blocked in hypercalcemia-like conditions and was stronger in human than in rat P2X3 receptors. In contrast, P2X2 and P2X7 receptors were insensitive to ApppI, suggesting a high selectivity of ApppI for the P2X3 receptor subtype. NBP, metabolite isopentenyl pyrophosphate, and endogenous AMP did not exert any inhibitory action, indicating that only intact ApppI has inhibitory activity. Ca2+-dependent inhibition was stronger in trigeminal neurons preferentially expressing desensitizing P2X3 subunits than in nodose ganglia neurons, which also express nondesensitizing P2X2 subunits. Altogether, we characterized previously unknown purinergic mechanisms of NBP-induced metabolites and suggest ApppI as the endogenous pain inhibitor contributing to cancer treatment with NBPs.
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Affiliation(s)
- Yevheniia Ishchenko
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Anastasia Shakirzyanova
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Raisa Giniatullina
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Andrei Skorinkin
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Genevieve Bart
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Petri Turhanen
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Jorma A Määttä
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Jukka Mönkkönen
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
| | - Rashid Giniatullin
- A. I. Virtanen Institute (Y.I., A.Sh., Rai.G., G.B., Ras.G.) and School of Pharmacy (P.T., J. M.), University of Eastern Finland, Kuopio, Finland; Kazan Institute of Biochemistry and Biophysics, Kazan, Russia (A.Sh., A.Sk.); Institute of Biomedicine, University of Turku, Turku, Finland (J.A.M.); and Kazan Federal University, Kazan, Russia (A.Sh., A.Sk., R.Gas.)
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36
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Wang G, Wang K. The Ca2+-Permeable Cation Transient Receptor Potential TRPV3 Channel: An Emerging Pivotal Target for Itch and Skin Diseases. Mol Pharmacol 2017; 92:193-200. [DOI: 10.1124/mol.116.107946] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 03/31/2017] [Indexed: 12/15/2022] Open
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37
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Schwarz MG, Namer B, Reeh PW, Fischer MJM. TRPA1 and TRPV1 Antagonists Do Not Inhibit Human Acidosis-Induced Pain. THE JOURNAL OF PAIN 2017; 18:526-534. [PMID: 28062311 DOI: 10.1016/j.jpain.2016.12.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/21/2016] [Accepted: 12/21/2016] [Indexed: 12/31/2022]
Abstract
Acidosis occurs in a variety of pathophysiological and painful conditions where it is thought to excite or contribute to excitation of nociceptive neurons. Despite potential clinical relevance the principal receptor for sensing acidosis is unclear, but several receptors have been proposed. We investigated the contribution of the acid-sensing ion channels, transient receptor potential vanilloid type 1 (TRPV1) and transient receptor potential ankyrin type 1 (TRPA1) to peripheral pain signaling. We first established a human pain model using intraepidermal injection of the TRPA1 agonist carvacrol. This resulted in concentration-dependent pain sensations, which were reduced by experimental TRPA1 antagonist A-967079. Capsaicin-induced pain was reduced by the TRPV1 inhibitor BCTC. Amiloride was used to block acid-sensing ion channels. Testing these antagonists in a double-blind and randomized experiment, we probed the contribution of the respective channels to experimental acidosis-induced pain in 15 healthy human subjects. A continuous intraepidermal injection of pH 4.3 was used to counter the buffering capacity of tissue and generate a prolonged painful stimulation. In this model, addition of A-967079, BCTC or amiloride did not reduce the reported pain. In conclusion, target-validated antagonists, applied locally in human skin, have excluded the main hypothesized targets and the mechanism of the human acidosis-induced pain remains unclear. PERSPECTIVE An acidic milieu is a trigger of pain in many clinical conditions. The aim of this study was to identify the contribution of the currently hypothesized sensors of acid-induced pain in humans. Surprisingly, inhibition of these receptors did not alter acidosis-induced pain.
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Affiliation(s)
- Matthias G Schwarz
- Institute of Physiology and Pathophysiology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Barbara Namer
- Institute of Physiology and Pathophysiology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Peter W Reeh
- Institute of Physiology and Pathophysiology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Michael J M Fischer
- Institute of Physiology and Pathophysiology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany; Center of Physiology and Pharmacology Medical University of Vienna, Vienna, Austria.
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Broad LM, Mogg AJ, Eberle E, Tolley M, Li DL, Knopp KL. TRPV3 in Drug Development. Pharmaceuticals (Basel) 2016; 9:E55. [PMID: 27618069 PMCID: PMC5039508 DOI: 10.3390/ph9030055] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/19/2016] [Accepted: 08/31/2016] [Indexed: 02/01/2023] Open
Abstract
Transient receptor potential vanilloid 3 (TRPV3) is a member of the TRP (Transient Receptor Potential) super-family. It is a relatively underexplored member of the thermo-TRP sub-family (Figure 1), however, genetic mutations and use of gene knock-outs and selective pharmacological tools are helping to provide insights into its role and therapeutic potential. TRPV3 is highly expressed in skin, where it is implicated in skin physiology and pathophysiology, thermo-sensing and nociception. Gain of function TRPV3 mutations in rodent and man have enabled the role of TRPV3 in skin health and disease to be particularly well defined. Pre-clinical studies provide some rationale to support development of TRPV3 antagonists for therapeutic application for the treatment of inflammatory skin conditions, itch and pain. However, to date, only one compound directed towards block of the TRPV3 receptor (GRC15300) has progressed into clinical trials. Currently, there are no known clinical trials in progress employing a TRPV3 antagonist.
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Affiliation(s)
- Lisa M Broad
- Lilly Research Centre, Eli Lilly and Company Ltd., Erl Wood Manor, Windlesham, Surrey GU20 6PH, UK.
| | - Adrian J Mogg
- Lilly Research Centre, Eli Lilly and Company Ltd., Erl Wood Manor, Windlesham, Surrey GU20 6PH, UK.
| | - Elizabeth Eberle
- Covance Greenfield Laboratories, Greenfield, Indianapolis, IN 46140, USA.
| | - Marcia Tolley
- Covance Greenfield Laboratories, Greenfield, Indianapolis, IN 46140, USA.
| | - Dominic L Li
- Lilly Research Laboratories, Eli Lilly and Company Inc., Indianapolis, IN 46285, USA.
| | - Kelly L Knopp
- Lilly Research Laboratories, Eli Lilly and Company Inc., Indianapolis, IN 46285, USA.
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Murphy TV, Kanagarajah A, Toemoe S, Bertrand PP, Grayson TH, Britton FC, Leader L, Senadheera S, Sandow SL. TRPV3 expression and vasodilator function in isolated uterine radial arteries from non-pregnant and pregnant rats. Vascul Pharmacol 2016; 83:66-77. [DOI: 10.1016/j.vph.2016.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/04/2016] [Indexed: 01/01/2023]
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McEntire DM, Kirkpatrick DR, Dueck NP, Kerfeld MJ, Smith TA, Nelson TJ, Reisbig MD, Agrawal DK. Pain transduction: a pharmacologic perspective. Expert Rev Clin Pharmacol 2016; 9:1069-80. [PMID: 27137678 DOI: 10.1080/17512433.2016.1183481] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Pain represents a necessary physiological function yet remains a significant pathological process in humans across the world. The transduction of a nociceptive stimulus refers to the processes that turn a noxious stimulus into a transmissible neurological signal. This involves a number of ion channels that facilitate the conversion of nociceptive stimulus into and electrical signal. AREAS COVERED An understanding of nociceptive physiology complements a discussion of analgesic pharmacology. Therefore, the two are presented together. In this review article, a critical evaluation is provided on research findings relating to both the physiology and pharmacology of relevant acid-sensing ion channels (ASICs), transient receptor potential (TRP) cation channels, and voltage-gated sodium (Nav) channels. Expert commentary: Despite significant steps toward identifying new and more effective modalities to treat pain, there remain many avenues of inquiry related to pain transduction. The activity of ASICs in nociception has been demonstrated but the physiology is not fully understood. A number of medications appear to interact with ASICs but no research has demonstrated pain-relieving clinical utility. Direct antagonism of TRPV1 channels is not in practice due to concerning side effects. However, work in this area is ongoing. Additional research in the of TRPA1, TRPV3, and TRPM8 may yield useful results. Local anesthetics are widely used. However, the risk for systemic effects limits the maximal safe dosage. Selective Nav antagonists have been identified that lack systemic effects.
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Affiliation(s)
- Dan M McEntire
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Daniel R Kirkpatrick
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Nicholas P Dueck
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Mitchell J Kerfeld
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Tyler A Smith
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Taylor J Nelson
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Mark D Reisbig
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
| | - Devendra K Agrawal
- a Department of Clinical and Translational Science and Department of Anesthesiology , Creighton University School of Medicine , Omaha , NE , USA
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Singh U, Kumar S, Shelkar GP, Yadav M, Kokare DM, Goswami C, Lechan RM, Singru PS. Transient receptor potential vanilloid 3 (TRPV3) in the ventral tegmental area of rat: Role in modulation of the mesolimbic-dopamine reward pathway. Neuropharmacology 2016; 110:198-210. [PMID: 27084697 DOI: 10.1016/j.neuropharm.2016.04.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/04/2016] [Accepted: 04/10/2016] [Indexed: 12/29/2022]
Abstract
While dopamine (DA) neurons in the ventral tegmental area (VTA) drive the mesolimbic-reward pathway, confluent lines of evidence underscore the importance of transient receptor potential vanilloid (TRPV) channels as novel regulators of these neurons. Among the TRPV-subfamily, TRPV3 is of particular interest in reward, since active ingredients of flavour-enhancing spices in food serve as TRPV3 agonists and modulate DAergic neurotransmission. The nature of TRPV3 elements in the VTA and their role in driving the mesolimbic-DA-reward pathway has however, remained unexplored. We observed TRPV3 mRNA as well as TRPV3-immunoreactive neurons in the VTA of Wistar rats. We therefore explored whether these ion channels participate in modulating mesolimbic-DA reward pathway. In the posterior VTA (pVTA), 82 ± 2.6% of the TRPV3 neurons co-express tyrosine hydroxylase and 68 ± 5.5% of these neurons project to the nucleus accumbens shell (Acb shell). While ex vivo treatment of midbrain slices with TRPV3-agonist, thymol increased [Ca(2+)]i-activity in pVTA neurons, intra-pVTA injections of thymol in freely-moving, satiated rats enhanced positive reinforcement for active lever pressings in an operant chamber to self-administer sweet pellets. This behavior was attenuated by prior treatment with intra-Acb shell DA D1- and D2-like receptor antagonists. These results demonstrate a role for TRPV3 in driving mesolimbic-DA food-reward pathway, and underscores the importance of these channels in the VTA as key components processing reward.
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Affiliation(s)
- Uday Singh
- School of Biological Sciences, National Institute of Science Education and Research (NISER)-Bhubaneswar, 752050, Odisha, India
| | - Santosh Kumar
- School of Biological Sciences, National Institute of Science Education and Research (NISER)-Bhubaneswar, 752050, Odisha, India
| | - Gajanan P Shelkar
- Department of Pharmaceutical Sciences, R.T.M. Nagpur University, Nagpur, 440033, Maharashtra, India
| | - Manoj Yadav
- School of Biological Sciences, National Institute of Science Education and Research (NISER)-Bhubaneswar, 752050, Odisha, India
| | - Dadasaheb M Kokare
- Department of Pharmaceutical Sciences, R.T.M. Nagpur University, Nagpur, 440033, Maharashtra, India
| | - Chandan Goswami
- School of Biological Sciences, National Institute of Science Education and Research (NISER)-Bhubaneswar, 752050, Odisha, India
| | - Ronald M Lechan
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Tupper Research Institute, Tufts Medical Center, Boston, MA, USA; Department of Neuroscience, Tufts University School of Medicine, Boston, MA, USA
| | - Praful S Singru
- School of Biological Sciences, National Institute of Science Education and Research (NISER)-Bhubaneswar, 752050, Odisha, India.
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Wu SW, Lindberg JEM, Peters JH. Genetic and pharmacological evidence for low-abundance TRPV3 expression in primary vagal afferent neurons. Am J Physiol Regul Integr Comp Physiol 2016; 310:R794-805. [PMID: 26843581 DOI: 10.1152/ajpregu.00366.2015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 01/28/2016] [Indexed: 01/11/2023]
Abstract
Primary vagal afferent neurons express a multitude of thermosensitive ion channels. Within this family of ion channels, the heat-sensitive capsaicin receptor (TRPV1) greatly influences vagal afferent signaling by determining the threshold for action-potential initiation at the peripheral endings, while controlling temperature-sensitive forms of glutamate release at central vagal terminals. Genetic deletion of TRPV1 does not completely eliminate these temperature-dependent effects, suggesting involvement of additional thermosensitive ion channels. The warm-sensitive, calcium-permeable, ion channel TRPV3 is commonly expressed with TRPV1; however, the extent to which TRPV3 is found in vagal afferent neurons is unknown. Here, we begin to characterize the genetic and functional expression of TRPV3 in vagal afferent neurons using molecular biology (RT-PCR and RT-quantitative PCR) in whole nodose and isolated neurons and fluorescent calcium imaging on primary cultures of nodose ganglia neurons. We confirmed low-level TRPV3 expression in vagal afferent neurons and observed direct activation with putative TRPV3 agonists eugenol, ethyl vanillin (EVA), and farnesyl pyrophosphate (FPP). Agonist activation stimulated neurons also containing TRPV1 and was blocked by ruthenium red. FPP sensitivity overlapped with EVA and eugenol but represented the smallest percentage of vagal afferent neurons, and it was the only agonist that did not stimulate neurons from TRPV3(-/-1) mice, suggesting FPP has the highest selectivity. Further, FPP was predictive of enhanced responses to capsaicin, EVA, and eugenol in rats. From our results, we conclude TRPV3 is expressed in a discrete subpopulation of vagal afferent neurons and may contribute to vagal afferent signaling either directly or in combination with TRPV1.
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Affiliation(s)
- Shaw-Wen Wu
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington
| | - Jonathan E M Lindberg
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington
| | - James H Peters
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington
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Hamilton NB, Kolodziejczyk K, Kougioumtzidou E, Attwell D. Proton-gated Ca(2+)-permeable TRP channels damage myelin in conditions mimicking ischaemia. Nature 2016; 529:523-7. [PMID: 26760212 PMCID: PMC4733665 DOI: 10.1038/nature16519] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 12/07/2015] [Indexed: 11/09/2022]
Abstract
The myelin sheaths wrapped around axons by oligodendrocytes are crucial for brain function. In ischaemia myelin is damaged in a Ca(2+)-dependent manner, abolishing action potential propagation. This has been attributed to glutamate release activating Ca(2+)-permeable N-methyl-D-aspartate (NMDA) receptors. Surprisingly, we now show that NMDA does not raise the intracellular Ca(2+) concentration ([Ca(2+)]i) in mature oligodendrocytes and that, although ischaemia evokes a glutamate-triggered membrane current, this is generated by a rise of extracellular [K(+)] and decrease of membrane K(+) conductance. Nevertheless, ischaemia raises oligodendrocyte [Ca(2+)]i, [Mg(2+)]i and [H(+)]i, and buffering intracellular pH reduces the [Ca(2+)]i and [Mg(2+)]i increases, showing that these are evoked by the rise of [H(+)]i. The H(+)-gated [Ca(2+)]i elevation is mediated by channels with characteristics of TRPA1, being inhibited by ruthenium red, isopentenyl pyrophosphate, HC-030031, A967079 or TRPA1 knockout. TRPA1 block reduces myelin damage in ischaemia. These data suggest that TRPA1-containing ion channels could be a therapeutic target in white matter ischaemia.
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Affiliation(s)
- Nicola B Hamilton
- Department of Neuroscience, Physiology &Pharmacology, University College London, Gower St., London WC1E 6BT, UK
| | - Karolina Kolodziejczyk
- Department of Neuroscience, Physiology &Pharmacology, University College London, Gower St., London WC1E 6BT, UK
| | - Eleni Kougioumtzidou
- Department of Neuroscience, Physiology &Pharmacology, University College London, Gower St., London WC1E 6BT, UK
| | - David Attwell
- Department of Neuroscience, Physiology &Pharmacology, University College London, Gower St., London WC1E 6BT, UK
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44
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Boadas-Vaello P, Castany S, Homs J, Álvarez-Pérez B, Deulofeu M, Verdú E. Neuroplasticity of ascending and descending pathways after somatosensory system injury: reviewing knowledge to identify neuropathic pain therapeutic targets. Spinal Cord 2016; 54:330-40. [DOI: 10.1038/sc.2015.225] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 11/25/2015] [Accepted: 11/28/2015] [Indexed: 12/16/2022]
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Pires PW, Sullivan MN, Pritchard HAT, Robinson JJ, Earley S. Unitary TRPV3 channel Ca2+ influx events elicit endothelium-dependent dilation of cerebral parenchymal arterioles. Am J Physiol Heart Circ Physiol 2015; 309:H2031-41. [PMID: 26453324 DOI: 10.1152/ajpheart.00140.2015] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 10/05/2015] [Indexed: 02/07/2023]
Abstract
Cerebral parenchymal arterioles (PA) regulate blood flow between pial arteries on the surface of the brain and the deeper microcirculation. Regulation of PA contractility differs from that of pial arteries and is not completely understood. Here, we investigated the hypothesis that the Ca(2+) permeable vanilloid transient receptor potential (TRPV) channel TRPV3 can mediate endothelium-dependent dilation of cerebral PA. Using total internal reflection fluorescence microscopy (TIRFM), we found that carvacrol, a monoterpenoid compound derived from oregano, increased the frequency of unitary Ca(2+) influx events through TRPV3 channels (TRPV3 sparklets) in endothelial cells from pial arteries and PAs. Carvacrol-induced TRPV3 sparklets were inhibited by the selective TRPV3 blocker isopentenyl pyrophosphate (IPP). TRPV3 sparklets have a greater unitary amplitude (ΔF/F0 = 0.20) than previously characterized TRPV4 (ΔF/F0 = 0.06) or TRPA1 (ΔF/F0 = 0.13) sparklets, suggesting that TRPV3-mediated Ca(2+) influx could have a robust influence on cerebrovascular tone. In pressure myography experiments, carvacrol caused dilation of cerebral PA that was blocked by IPP. Carvacrol-induced dilation was nearly abolished by removal of the endothelium and block of intermediate (IK) and small-conductance Ca(2+)-activated K(+) (SK) channels. Together, these data suggest that TRPV3 sparklets cause dilation of cerebral parenchymal arterioles by activating IK and SK channels in the endothelium.
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Affiliation(s)
- Paulo W Pires
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada School of Medicine, Reno, Nevada; and
| | - Michelle N Sullivan
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada School of Medicine, Reno, Nevada; and Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Harry A T Pritchard
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada School of Medicine, Reno, Nevada; and
| | - Jennifer J Robinson
- Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Scott Earley
- Department of Pharmacology, Center for Cardiovascular Research, University of Nevada School of Medicine, Reno, Nevada; and
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46
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Luo J, Feng J, Liu S, Walters ET, Hu H. Molecular and cellular mechanisms that initiate pain and itch. Cell Mol Life Sci 2015; 72:3201-23. [PMID: 25894692 PMCID: PMC4534341 DOI: 10.1007/s00018-015-1904-4] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 03/20/2015] [Accepted: 04/07/2015] [Indexed: 12/17/2022]
Abstract
Somatosensory neurons mediate our sense of touch. They are critically involved in transducing pain and itch sensations under physiological and pathological conditions, along with other skin-resident cells. Tissue damage and inflammation can produce a localized or systemic sensitization of our senses of pain and itch, which can facilitate our detection of threats in the environment. Although acute pain and itch protect us from further damage, persistent pain and itch are debilitating. Recent exciting discoveries have significantly advanced our knowledge of the roles of membrane-bound G protein-coupled receptors and ion channels in the encoding of information leading to pain and itch sensations. This review focuses on molecular and cellular events that are important in early stages of the biological processing that culminates in our senses of pain and itch.
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Affiliation(s)
- Jialie Luo
- Department of Anesthesiology, The Center for the Study of Itch, Washington University School of Medicine, 660 S. Euclid Ave., St. Louis, MO, 63110, USA
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Kumari S, Kumar A, Sardar P, Yadav M, Majhi RK, Kumar A, Goswami C. Influence of membrane cholesterol in the molecular evolution and functional regulation of TRPV4. Biochem Biophys Res Commun 2015; 456:312-9. [DOI: 10.1016/j.bbrc.2014.11.077] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 11/20/2014] [Indexed: 12/19/2022]
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48
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Deering-Rice CE, Mitchell VK, Romero EG, Abdel Aziz MH, Ryskamp DA, Križaj D, Gopal VR, Reilly CA. Drofenine: A 2-APB Analogue with Greater Selectivity for Human TRPV3. Pharmacol Res Perspect 2014; 2:e00062. [PMID: 25089200 PMCID: PMC4115637 DOI: 10.1002/prp2.62] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Transient receptor potential vanilloid-3 (TRPV3) is a member of the TRPV subfamily of TRP ion channels. The physiological functions of TRPV3 are not fully understood, in part, due to a lack of selective agonists and antagonists that could both facilitate the elucidation of roles for TRPV3 in mammalian physiology as well as potentially serve as therapeutic agents to modulate conditions for which altered TRPV3 function has been implicated. In this study, the Microsource Spectrum Collection was screened for TRPV3 agonists and antagonists using alterations in calcium flux in TRPV3 overexpressing human embryonic kidney-293 (HEK-293) cells. The antispasmodic agent drofenine was identified as a new TRPV3 agonist. Drofenine exhibited similar potency to the known TRPV3 agonists 2-aminoethoxydiphenylboronate (2-APB) and carvacrol in HEK-293 cells, but greater selectivity for TRPV3 based on a lack of activation of TRPA1, V1, V2, V4, or M8. Multiple inhibitors were also identified, but all of the compounds were either inactive or not specific. Drofenine activated TRPV3 via interactions with the residue, H426, which is required for TRPV3 activation by 2-APB. Drofenine was a more potent agonist of TRPV3 and more cytotoxic than either carvacrol or 2-APB in human keratinocytes and its effect on TRPV3 in HaCaT cells was further demonstrated using the antagonist icilin. Due to the lack of specificity of existing TRPV3 modulators and the expression of multiple TRP channels in cells/tissue, drofenine may be a valuable probe for elucidating TRPV3 functions in complex biological systems. Identification of TRPV3 as a target for drofenine may also suggest a mechanism by which drofenine acts as a therapeutic agent.
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Affiliation(s)
- Cassandra E Deering-Rice
- Department of Pharmacology and Toxicology, University of Utah, 30 S. 2000 E., Room 201 Skaggs Hall, Salt Lake City, UT 84112, USA
| | - Virginia K Mitchell
- Department of Pharmacology and Toxicology, University of Utah, 30 S. 2000 E., Room 201 Skaggs Hall, Salt Lake City, UT 84112, USA
| | - Erin G Romero
- Department of Pharmacology and Toxicology, University of Utah, 30 S. 2000 E., Room 201 Skaggs Hall, Salt Lake City, UT 84112, USA
| | - May H Abdel Aziz
- Department of Pharmacology and Toxicology, University of Utah, 30 S. 2000 E., Room 201 Skaggs Hall, Salt Lake City, UT 84112, USA
| | - Daniel A Ryskamp
- Department of Ophthalmology & Visual Sciences, Interdepartmental Neuroscience Program, University of Utah, Room S4140 Moran Eye Center, Salt Lake City, UT 84132, USA
| | - David Križaj
- Department of Ophthalmology & Visual Sciences, Interdepartmental Neuroscience Program, University of Utah, Room S4140 Moran Eye Center, Salt Lake City, UT 84132, USA
| | - V Raj Gopal
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112
| | - Christopher A Reilly
- Department of Pharmacology and Toxicology, University of Utah, 30 S. 2000 E., Room 201 Skaggs Hall, Salt Lake City, UT 84112, USA
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Kaneko Y, Szallasi A. Transient receptor potential (TRP) channels: a clinical perspective. Br J Pharmacol 2014; 171:2474-507. [PMID: 24102319 PMCID: PMC4008995 DOI: 10.1111/bph.12414] [Citation(s) in RCA: 283] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/28/2013] [Accepted: 08/31/2013] [Indexed: 12/14/2022] Open
Abstract
Transient receptor potential (TRP) channels are important mediators of sensory signals with marked effects on cellular functions and signalling pathways. Indeed, mutations in genes encoding TRP channels are the cause of several inherited diseases in humans (the so-called 'TRP channelopathies') that affect the cardiovascular, renal, skeletal and nervous systems. TRP channels are also promising targets for drug discovery. The initial focus of research was on TRP channels that are expressed on nociceptive neurons. Indeed, a number of potent, small-molecule TRPV1, TRPV3 and TRPA1 antagonists have already entered clinical trials as novel analgesic agents. There has been a recent upsurge in the amount of work that expands TRP channel drug discovery efforts into new disease areas such as asthma, cancer, anxiety, cardiac hypertrophy, as well as obesity and metabolic disorders. A better understanding of TRP channel functions in health and disease should lead to the discovery of first-in-class drugs for these intractable diseases. With this review, we hope to capture the current state of this rapidly expanding and changing field.
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Affiliation(s)
- Yosuke Kaneko
- Discovery Research Alliance, Ono Pharmaceutical Co. LtdOsaka, Japan
| | - Arpad Szallasi
- Department of Pathology and Laboratory Medicine, Monmouth Medical CenterLong Branch, NJ, USA
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50
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Yoo S, Lim JY, Hwang SW. Sensory TRP channel interactions with endogenous lipids and their biological outcomes. Molecules 2014; 19:4708-44. [PMID: 24739932 PMCID: PMC6271031 DOI: 10.3390/molecules19044708] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/08/2014] [Accepted: 04/08/2014] [Indexed: 01/30/2023] Open
Abstract
Lipids have long been studied as constituents of the cellular architecture and energy stores in the body. Evidence is now rapidly growing that particular lipid species are also important for molecular and cellular signaling. Here we review the current information on interactions between lipids and transient receptor potential (TRP) ion channels in nociceptive sensory afferents that mediate pain signaling. Sensory neuronal TRP channels play a crucial role in the detection of a variety of external and internal changes, particularly with damaging or pain-eliciting potentials that include noxiously high or low temperatures, stretching, and harmful substances. In addition, recent findings suggest that TRPs also contribute to altering synaptic plasticity that deteriorates chronic pain states. In both of these processes, specific lipids are often generated and have been found to strongly modulate TRP activities, resulting primarily in pain exacerbation. This review summarizes three standpoints viewing those lipid functions for TRP modulations as second messengers, intercellular transmitters, or bilayer building blocks. Based on these hypotheses, we discuss perspectives that account for how the TRP-lipid interaction contributes to the peripheral pain mechanism. Still a number of blurred aspects remain to be examined, which will be answered by future efforts and may help to better control pain states.
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Affiliation(s)
- Sungjae Yoo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 136-705, Korea.
| | - Ji Yeon Lim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 136-705, Korea.
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 136-705, Korea.
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