1
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Wu KC, Leong IL, Leung YM. Ca 2+-sensing receptor-TRP channel-mediated Ca 2+ signaling: Functional diversity and pharmacological complexity. Eur J Pharmacol 2024; 977:176717. [PMID: 38857682 DOI: 10.1016/j.ejphar.2024.176717] [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: 01/10/2024] [Revised: 05/07/2024] [Accepted: 06/05/2024] [Indexed: 06/12/2024]
Abstract
The Ca2+-sensing receptor (CaSR) is a G-protein-coupled receptor activated by elevated concentrations of extracellular Ca2+, and was initially known for its regulation of parathyroid hormone (PTH) release. Ubiquitous expression of CaSR in different tissues and organs was later noted and CaSR participation in various physiological functions was demonstrated. Accumulating evidence has suggested that CaSR functionally interacts with transient receptor potential (TRP) channels, which are mostly non-selective cation channels involved in sensing temperature, pain and stress. This review describes the interactions of CaSR with TRP channels in diverse cell types to trigger a variety of biological responses. CaSR has been known to interact with different types of G proteins. Possible involvements of G proteins, other signaling and scaffolding protein intermediates in CaSR-TRP interaction are discussed. In addition, an attempt will be made to extend the current understanding of biased agonism of CaSR.
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Affiliation(s)
- King-Chuen Wu
- Department of Anesthesiology, Chang Gung Memorial Hospital, Chiayi, Taiwan; Chang Gung University of Science and Technology, Chiayi, Taiwan; Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Iat-Lon Leong
- Division of Cardiology, University Hospital, Macau University of Science and Technology, Macau
| | - Yuk-Man Leung
- Department of Physiology, China Medical University, Taichung, Taiwan.
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2
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Shirai T, Kinoshita K, Kumihashi K, Mugita N, Yoshida M, Kigoshi H. Skin- and airway-deliverable TRPA1 inhibitor. Bioorg Med Chem 2024; 110:117812. [PMID: 38941887 DOI: 10.1016/j.bmc.2024.117812] [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: 05/04/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 06/30/2024]
Abstract
This study explored the potential of perfumery compounds as sources of transient receptor potential ankyrin 1 (TRPA1) inhibitors that could be formulated for effective delivery to the skin and airways. A highly potent, small, and selective TRPA1 inhibitor, 2-methyl-4-phenyl-1-pentanol (1), was discovered in perfumery compounds. Compound 1 demonstrated promising inhibitory activity against a broad range of TRPA1 agonists. A single stereoisomer of 1 was identified as the most effective TRPA1 inhibitor, indicating the potential for stereoselective synthesis to enhance its potency. Additionally, the structure-activity relationship of 1 was evaluated to elucidate the structural features of TRPA1 inhibitors within the fragrance-like compounds. Notably, the topical application of 1 alleviated sensory irritation in individuals with sensitive skin, while the inhalation of 1 resulted in a significant reduction in ammonia irritation, underscoring its efficacy in both skin and airway applications.
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Affiliation(s)
- Tomohiro Shirai
- Sensory Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga, Tochigi, Japan; Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan.
| | - Kazuki Kinoshita
- Sensory Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga, Tochigi, Japan
| | - Kentaro Kumihashi
- Sensory Science Research, Kao Corporation, 2606 Akabane, Ichikai-machi, Haga, Tochigi, Japan
| | - Nanae Mugita
- Safety Science Research, Kao Corporation, 2-1-3 Bunka, Sumida, Tokyo, Japan
| | - Masahito Yoshida
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Hideo Kigoshi
- Degree Programs in Pure and Applied Sciences, Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
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3
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Fila M, Przyslo L, Derwich M, Sobczuk P, Pawlowska E, Blasiak J. The TRPA1 Ion Channel Mediates Oxidative Stress-Related Migraine Pathogenesis. Molecules 2024; 29:3385. [PMID: 39064963 PMCID: PMC11280075 DOI: 10.3390/molecules29143385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/12/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Although the introduction of drugs targeting calcitonin gene-related peptide (CGRP) revolutionized migraine treatment, still a substantial proportion of migraine patients do not respond satisfactorily to such a treatment, and new therapeutic targets are needed. Therefore, molecular studies on migraine pathogenesis are justified. Oxidative stress is implicated in migraine pathogenesis, as many migraine triggers are related to the production of reactive oxygen and nitrogen species (RONS). Migraine has been proposed as a superior mechanism of the brain to face oxidative stress resulting from energetic imbalance. However, the precise mechanism behind the link between migraine and oxidative stress is not known. Nociceptive primary afferent nerve fiber endings express ion channel receptors that change harmful stimuli into electric pain signals. Transient receptor potential cation channel subfamily A member 1 (TRPA1) is an ion channel that can be activated by oxidative stress products and stimulate the release of CGRP from nerve endings. It is a transmembrane protein with ankyrin repeats and conserved cysteines in its N-terminus embedded in the cytosol. TRPA1 may be a central element of the signaling pathway from oxidative stress and NO production to CGRP release, which may play a critical role in headache induction. In this narrative review, we present information on the role of oxidative stress in migraine pathogenesis and provide arguments that TRPA1 may be "a missing link" between oxidative stress and migraine and therefore a druggable target in this disease.
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Affiliation(s)
- Michal Fila
- Department of Developmental Neurology and Epileptology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland; (M.F.); (L.P.)
| | - Lukasz Przyslo
- Department of Developmental Neurology and Epileptology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland; (M.F.); (L.P.)
| | - Marcin Derwich
- Department of Pediatric Dentistry, Medical University of Lodz, 92-217 Lodz, Poland; (M.D.); (E.P.)
| | - Piotr Sobczuk
- Emergency Medicine and Disaster Medicine Department, Medical University of Lodz, 92-209 Lodz, Poland;
- Department of Orthopaedics and Traumatology, Polish Mothers’ Memorial Hospital–Research Institute, Rzgowska 281, 93-338 Lodz, Poland
| | - Elzbieta Pawlowska
- Department of Pediatric Dentistry, Medical University of Lodz, 92-217 Lodz, Poland; (M.D.); (E.P.)
| | - Janusz Blasiak
- Faculty of Medicine, Collegium Medicum, Mazovian Academy in Plock, 09-402 Plock, Poland
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4
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Tekulapally KR, Lee JY, Kim DS, Rahman MM, Park CK, Kim YH. Dual role of transient receptor potential ankyrin 1 in respiratory and gastrointestinal physiology: From molecular mechanisms to therapeutic targets. Front Physiol 2024; 15:1413902. [PMID: 39022308 PMCID: PMC11251976 DOI: 10.3389/fphys.2024.1413902] [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: 04/08/2024] [Accepted: 06/10/2024] [Indexed: 07/20/2024] Open
Abstract
The transient receptor potential ankyrin 1 (TRPA1) channel plays a pivotal role in the respiratory and gastrointestinal tracts. Within the respiratory system, TRPA1 exhibits diverse distribution patterns across key cell types, including epithelial cells, sensory nerves, and immune cells. Its activation serves as a frontline sensor for inhaled irritants, triggering immediate protective responses, and influencing airway integrity. Furthermore, TRPA1 has been implicated in airway tissue injury, inflammation, and the transition of fibroblasts, thereby posing challenges in conditions, such as severe asthma and fibrosis. In sensory nerves, TRPA1 contributes to nociception, the cough reflex, and bronchoconstriction, highlighting its role in both immediate defense mechanisms and long-term respiratory reflex arcs. In immune cells, TRPA1 may modulate the release of pro-inflammatory mediators, shaping the overall inflammatory landscape. In the gastrointestinal tract, the dynamic expression of TRPA1 in enteric neurons, epithelial cells, and immune cells underscores its multifaceted involvement. It plays a crucial role in gut motility, visceral pain perception, and mucosal defense mechanisms. Dysregulation of TRPA1 in both tracts is associated with various disorders such as asthma, Chronic Obstructive Pulmonary Disease, Irritable Bowel Syndrome, and Inflammatory Bowel Disease. This review emphasizes the potential of TRPA1 as a therapeutic target and discusses the efficacy of TRPA1 antagonists in preclinical studies and their promise for addressing respiratory and gastrointestinal conditions. Understanding the intricate interactions and cross-talk of TRPA1 across different cell types provides insight into its versatile role in maintaining homeostasis in vital physiological systems, offering a foundation for targeted therapeutic interventions.
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Affiliation(s)
- Kavya Reddy Tekulapally
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Ji Yeon Lee
- Department of Anesthesiology and Pain Medicine, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Dong Seop Kim
- Department of Anesthesiology and Pain Medicine, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Md. Mahbubur Rahman
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Yong Ho Kim
- Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, Republic of Korea
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5
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Lin YS, Chan NJ, Xiao PY, Lai CJ. Stimulatory effect of methylglyoxal on capsaicin-sensitive lung vagal afferents in rats: role of TRPA1. Am J Physiol Regul Integr Comp Physiol 2024; 326:R427-R437. [PMID: 38497128 DOI: 10.1152/ajpregu.00297.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Methylglyoxal (MG), a reactive metabolic byproduct of glycolysis, is a causative of painful diabetic neuropathy. Patients with diabetes are associated with more frequent severe asthma exacerbation. Stimulation of capsaicin-sensitive lung vagal (CSLV) afferents may contribute to the pathogenesis of hyperreactive airway diseases such as asthma. However, the possibility of the stimulatory effect of MG on CSLV afferents and the underlying mechanisms remain unknown. Our results showed that intravenous injection of MG (25 mg/kg, MG25) in anesthetized, spontaneously breathing rats elicited pulmonary chemoreflexes characterized by apnea, bradycardia, and hypotension. The MG-induced apneic response was reproducible and dose dependent. MG25 no longer evoked these reflex responses after perineural capsaicin treatment of both cervical vagi to block C-fibers' conduction, suggesting that the reflexes were mediated through the stimulation of CSLV afferents. Pretreatment with HC030031 [an antagonist of transient receptor potential ankyrin subtype 1 protein (TRPA1)] or AP18 (another TRPA1 antagonist), but not their vehicle, markedly attenuated the apneic response induced by MG25. Consistently, electrophysiological results showed that pretreatment with HC030031 largely attenuated the intense discharge in CSLV afferents induced by injection of MG25 in open-chest and artificially ventilated rats. In isolated CSLV neurons, the perfusion of MG evoked an abrupt and pronounced increase in calcium transients in a concentration-dependent manner. This stimulatory effect on CSLV neurons was also abolished by HC030031 treatment but not by its vehicle. In conclusion, these results suggest that MG exerts a stimulatory effect on CSLV afferents, inducing pulmonary chemoreflexes, and such stimulation is mediated through the TRPA1 activation.NEW & NOTEWORTHY Methylglyoxal (MG) is implicated in the development of painful diabetic neuropathy. A retrospective cohort study revealed an increased incidence of asthma exacerbations in patients with diabetes. This study demonstrated that elevated circulating MG levels stimulate capsaicin-sensitive lung vagal afferents via activation of TRPA1, which in turn triggers respiratory reflexes. These findings provide new information for understanding the pathogenic mechanism of diabetes-associated hyperreactive airway diseases and potential therapy.
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Affiliation(s)
- You Shuei Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nai-Ju Chan
- Graduate Institute of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Pei-Yu Xiao
- Master Program in Biomedical Science, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ching Jung Lai
- Master Program in Biomedical Science, School of Medicine, Tzu Chi University, Hualien, Taiwan
- Department of Physiology, Tzu Chi University, Hualien, Taiwan
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6
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Li J, Zhang H, Du Q, Gu J, Wu J, Liu Q, Li Z, Zhang T, Xu J, Xie R. Research Progress on TRPA1 in Diseases. J Membr Biol 2023; 256:301-316. [PMID: 37039840 PMCID: PMC10667463 DOI: 10.1007/s00232-023-00277-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/23/2023] [Indexed: 04/12/2023]
Abstract
For a long time, the physiological activity of TRP ion channels and the response to various stimuli have been the focus of attention, and the physiological functions mediated by ion channels have subtle links with the occurrence of various diseases. Our group has been engaged in the study of ion channels. In recent years, the report rate of TRPA1, the only member of the TRPA subfamily in the newly described TRP channel, has been very high. TRPA1 channels are not only abundantly expressed in peptidergic nociceptors but are also found in many nonneuronal cell types and tissues, and through the regulation of Ca2+ influx, various neuropeptides and signaling pathways are involved in the regulation of nerves, respiration, circulation, and various diseases and inflammation throughout the body. In this review, we mainly summarize the effects of TRPA1 on various systems in the body, which not only allows us to have a more systematic and comprehensive understanding of TRPA1 but also facilitates more in-depth research on it in the future.
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Affiliation(s)
- Jiajing Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Hongfei Zhang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Qian Du
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Junyu Gu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Jiangbo Wu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Qi Liu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Zhuo Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Ting Zhang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Jingyu Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
| | - Rui Xie
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
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7
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Michot B, Casey SM, Lee CS, Erdogan O, Basu H, Chiu I, Gibbs JL. Lipopolysaccharide-Induced TRPA1 Upregulation in Trigeminal Neurons is Dependent on TLR4 and Vesicular Exocytosis. J Neurosci 2023; 43:6731-6744. [PMID: 37643860 PMCID: PMC10552941 DOI: 10.1523/jneurosci.0162-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/31/2023] Open
Abstract
Pain from bacterial infection was believed to be the consequence of inflammation induced by bacterial products. However recent studies have shown that bacterial products can directly activate sensory neurons and induce pain. The mechanisms by which bacteria induce pain are poorly understood, but toll-like receptor (TLR)4 and transient receptor potential A1 (TRPA1) receptors are likely important integrators of pain signaling induced by bacteria. Using male and female mice we show that sensory neuron activation by bacterial lipopolysaccharides (LPS) is mediated by both TRPA1 and TLR4 and involves the mobilization of extracellular and intracellular calcium. We also show that LPS induces neuronal sensitization in a process dependent on TLR4 receptors. Moreover, we show that TLR4 and TRPA1 are both involved in sensory neurons response to LPS stimulation. Activation of TLR4 in a subset of sensory neurons induces TRPA1 upregulation at the cell membrane through vesicular exocytosis, contributing to the initiation of neuronal sensitization and pain. Collectively these data highlight the importance of sensory neurons to pathogen detection, and their activation by bacterial products like LPS as potentially important to early immune and nociceptive responses.SIGNIFICANCE STATEMENT Bacterial infections are often painful and the recent discovery that bacteria can directly stimulate sensory neurons leading to pain sensation and modulation of immune system have highlighted the importance of nervous system in the response to bacterial infection. Here, we showed that lipopolysaccharide, a major bacterial by-product, requires both toll-like receptor (TLR)4 and transient receptor potential A1 (TRPA1) receptors for neuronal activation and acute spontaneous pain, but only TLR4 mediates sensory neurons sensitization. Moreover, we showed for the first time that TLR4 sensitize sensory neurons through a rapid upregulation of TRPA1 via vesicular exocytosis. Our data highlight the importance of sensory neurons to pathogen detection and suggests that TLR4 would be a potential therapeutic target to modulate early stage of bacteria-induced pain and immune response.
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Affiliation(s)
- Benoit Michot
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts 02115
- Department of Endodontics, New York University College of Dentistry, New York, New York 10010
| | - Sharon M Casey
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts 02115
- Department of Endodontics, New York University College of Dentistry, New York, New York 10010
| | - Caroline S Lee
- Department of Endodontics, New York University College of Dentistry, New York, New York 10010
| | - Ozge Erdogan
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts 02115
| | - Himanish Basu
- Department of Immunology, Harvard Medical School, Boston, Massachusetts 02215
| | - Isaac Chiu
- Department of Immunology, Harvard Medical School, Boston, Massachusetts 02215
| | - Jennifer L Gibbs
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts 02115
- Department of Endodontics, New York University College of Dentistry, New York, New York 10010
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8
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Geiger F, Zeitlmayr S, Staab-Weijnitz CA, Rajan S, Breit A, Gudermann T, Dietrich A. An Inhibitory Function of TRPA1 Channels in TGF-β1-driven Fibroblast-to-Myofibroblast Differentiation. Am J Respir Cell Mol Biol 2023; 68:314-325. [PMID: 36378826 DOI: 10.1165/rcmb.2022-0159oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
TRPA1 (transient receptor potential ankyrin 1) is a nonselective Ca2+-permeable cation channel, which was originally cloned from human lung fibroblasts (HLFs). TRPA1-mediated Ca2+ entry is evoked by exposure to several chemicals, including allyl isothiocyanate (AITC), and a protective effect of TRPA1 activation in the development of cardiac fibrosis has been proposed. Yet the function of TRPA1 in TGF-β1 (transforming growth factor-β1)-driven fibroblast-to-myofibroblast differentiation and the development of pulmonary fibrosis remains elusive. TRPA1 expression and function were analyzed in cultured primary HLFs, and mRNA concentrations were significantly reduced after adding TGF-β1. Expression of genes encoding fibrosis markers (e.g., ACTA2, SERPINE1 [plasminogen activator inhibitor 1], FN1 [fibronectin], COL1A1 [type I collagen]) was increased after siRNA-mediated downregulation of TRPA1 mRNA in HLFs. Moreover, AITC-induced Ca2+ entry in HLFs was decreased after TGF-β1 treatment and by application of TRPA1 siRNAs, while AITC treatment alone did not reduce cell viability or enhance apoptosis. Most interestingly, AITC-induced TRPA1 activation augmented ERK1/2 (extracellular signal-regulated kinase 1/2) and SMAD2 linker phosphorylation, which might inhibit TGF-β-receptor signaling. Our results suggest an inhibitory function of TRPA1 channels in TGF-β1-driven fibroblast-to-myofibroblast differentiation. Therefore, activation of TRPA1 channels might be protective during the development of pulmonary fibrosis in patients.
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Affiliation(s)
- Fabienne Geiger
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
| | - Sarah Zeitlmayr
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
| | - Claudia A Staab-Weijnitz
- Comprehensive Pneumology Center with the CPC-M BioArchive and Institute of Lung Health and Immunity, Helmholtz Center Munich, Member of the German Center for Lung Research, Munich, Germany
| | - Suhasini Rajan
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
| | - Andreas Breit
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
| | - Thomas Gudermann
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
| | - Alexander Dietrich
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research, Ludwig-Maximilians-University Munich, Munich, Germany, and
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9
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Kudsi SQ, Piccoli BC, Ardisson-Araújo D, Trevisan G. Transcriptional landscape of TRPV1, TRPA1, TRPV4, and TRPM8 channels throughout human tissues. Life Sci 2022; 308:120977. [PMID: 36126722 DOI: 10.1016/j.lfs.2022.120977] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/02/2022] [Accepted: 09/14/2022] [Indexed: 10/31/2022]
Abstract
AIMS This article aims to analyze the baseline distribution of TRPA1, TRPV1, TRPV4, and TRPM8 channels in human systems at the transcriptional level. MAIN METHODS Using the RNA-seq dataset from the National Center for Biotechnology Information (NCBI) gene database, we investigated and compared the transcriptional levels of TRPV1, TRPA1, TRPV4 and TRPM8 found in 95 human subjects representing 33 different tissues to determine the tissue specificity of all protein-coding genes. KEY FINDING In this study, we observed higher transcriptional levels for TRPV1 (duodenum), TRPA1 (Urinary bladder), TRPV4 (Kidney) and TRPM8 (Prostate) compared to the other TRPs. SIGNIFICANCE These channels are involved in developing inflammatory and painful pathologies and seem to participate in cancer development. This information on transcriptional levels of TRPV1, TRPA1, TRPV4 and TRPM8 in human systems may provide essential suggestions for further studies on these proteins.
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Affiliation(s)
- Sabrina Qader Kudsi
- Graduate Program in Pharmacology, Center of Health Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Bruna Candia Piccoli
- Graduate Program in Biological Sciences: Biochemistry Toxicology, Center of Natural and Exact Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Daniel Ardisson-Araújo
- Laboratory of Baculovirus, Cell Biology Department, University of Brasilia, Brasília, DF 70910-900, Brazil
| | - Gabriela Trevisan
- Graduate Program in Pharmacology, Center of Health Sciences, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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10
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Liu XG. Normalization of Neuroinflammation: A New Strategy for Treatment of Persistent Pain and Memory/Emotional Deficits in Chronic Pain. J Inflamm Res 2022; 15:5201-5233. [PMID: 36110505 PMCID: PMC9469940 DOI: 10.2147/jir.s379093] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/18/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic pain, which affects around 1/3 of the world population and is often comorbid with memory deficit and mood depression, is a leading source of suffering and disability. Studies in past decades have shown that hyperexcitability of primary sensory neurons resulting from abnormal expression of ion channels and central sensitization mediated pathological synaptic plasticity, such as long-term potentiation in spinal dorsal horn, underlie the persistent pain. The memory/emotional deficits are associated with impaired synaptic connectivity in hippocampus. Dysregulation of numerous endogenous proteins including receptors and intracellular signaling molecules is involved in the pathological processes. However, increasing knowledge contributes little to clinical treatment. Emerging evidence has demonstrated that the neuroinflammation, characterized by overproduction of pro-inflammatory cytokines and glial activation, is reliably detected in humans and animals with chronic pain, and is sufficient to induce persistent pain and memory/emotional deficits. The abnormal expression of ion channels and pathological synaptic plasticity in spinal dorsal horn and in hippocampus are resulting from neuroinflammation. The neuroinflammation is initiated and maintained by the interactions of circulating monocytes, glial cells and neurons. Obviously, unlike infectious diseases and cancer, which are caused by pathogens or malignant cells, chronic pain is resulting from alterations of cells and molecules which have numerous physiological functions. Therefore, normalization (counterbalance) but not simple inhibition of the neuroinflammation is the right strategy for treating neuronal disorders. Currently, no such agent is available in clinic. While experimental studies have demonstrated that intracellular Mg2+ deficiency is a common feature of chronic pain in animal models and supplement Mg2+ are capable of normalizing the neuroinflammation, activation of upregulated proteins that promote recovery, such as translocator protein (18k Da) or liver X receptors, has a similar effect. In this article, relevant experimental and clinical evidence is reviewed and discussed.
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Affiliation(s)
- Xian-Guo Liu
- Pain Research Center and Department of Physiology, Zhongshan School of Medicine of Sun Yat-sen University, Guangzhou, People's Republic of China
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11
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Liu Y, Li Z, Wu W, Wang Y, Zhao G, Liu Y, Liu J, Song Z. UVR Promotes Keratinocyte Phagocytosis and Skin Pigmentation Through TRPA1 Channels. CLINICAL, COSMETIC AND INVESTIGATIONAL DERMATOLOGY 2022; 15:1183-1193. [PMID: 35784271 PMCID: PMC9249384 DOI: 10.2147/ccid.s365682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/15/2022] [Indexed: 11/23/2022]
Affiliation(s)
- Ying Liu
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Zhou Li
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Wei Wu
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Yupeng Wang
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Guangming Zhao
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Yuejian Liu
- Central Laboratory, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Jing Liu
- Stem Cell Clinical Research Center, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
| | - Zhiqi Song
- Department of Dermatology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China
- Correspondence: Zhiqi Song, Department of Dermatology, First Affiliated Hospital of Dalian Medical University, 222 Zhongshan Road, Dalian, 116011, People’s Republic of China, Email
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Meng L, Gu G, Bi L. Transient receptor potential channels in multiple myeloma (Review). Oncol Lett 2022; 23:108. [PMID: 35242236 DOI: 10.3892/ol.2022.13228] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 12/30/2021] [Indexed: 11/06/2022] Open
Affiliation(s)
- Lingjun Meng
- Department of Hematology and Oncology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guiying Gu
- Department of Hematology and Oncology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Lintao Bi
- Department of Hematology and Oncology, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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