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Suzuki S, Wakano C, Monteilh-Zoller MK, Cullen AJ, Fleig A, Penner R. Cannabigerolic Acid (CBGA) Inhibits the TRPM7 Ion Channel Through its Kinase Domain. FUNCTION 2023; 5:zqad069. [PMID: 38162115 PMCID: PMC10757070 DOI: 10.1093/function/zqad069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/27/2023] [Accepted: 12/04/2023] [Indexed: 01/03/2024] Open
Abstract
Cannabinoids are a major class of compounds produced by the plant Cannabis sativa. Previous work has demonstrated that the main cannabinoids cannabidiol (CBD) and tetrahydrocannabinol (THC) can have some beneficial effects on pain, inflammation, epilepsy, and chemotherapy-induced nausea and vomiting. While CBD and THC represent the two major plant cannabinoids, some hemp varieties with enzymatic deficiencies produce mainly cannabigerolic acid (CBGA). We recently reported that CBGA has a potent inhibitory effect on both Store-Operated Calcium Entry (SOCE) via inhibition of Calcium Release-Activated Calcium (CRAC) channels as well as currents carried by the channel-kinase TRPM7. Importantly, CBGA prevented kidney damage and suppressed mRNA expression of inflammatory cytokines through inhibition of these mechanisms in an acute nephropathic mouse model. In the present study, we investigate the most common major and minor cannabinoids to determine their potential efficacy on TRPM7 channel function. We find that approximately half of the tested cannabinoids suppress TRPM7 currents to some degree, with CBGA having the strongest inhibitory effect on TRPM7. We determined that the CBGA-mediated inhibition of TRPM7 requires a functional kinase domain, is sensitized by both intracellular Mg⋅ATP and free Mg2+ and reduced by increases in intracellular Ca2+. Finally, we demonstrate that CBGA inhibits native TRPM7 channels in a B lymphocyte cell line. In conclusion, we demonstrate that CBGA is the most potent cannabinoid in suppressing TRPM7 activity and possesses therapeutic potential for diseases in which TRPM7 is known to play an important role such as cancer, stroke, and kidney disease.
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Affiliation(s)
- Sayuri Suzuki
- Center for Biomedical Research, The Queen’s Medical Center, 1301 Punchbowl St., Honolulu, HI 96813, USA
| | - Clay Wakano
- Center for Biomedical Research, The Queen’s Medical Center, 1301 Punchbowl St., Honolulu, HI 96813, USA
| | | | - Aaron J Cullen
- Center for Biomedical Research, The Queen’s Medical Center, 1301 Punchbowl St., Honolulu, HI 96813, USA
| | - Andrea Fleig
- Center for Biomedical Research, The Queen’s Medical Center, 1301 Punchbowl St., Honolulu, HI 96813, USA
- University of Hawaii Cancer Center, 651 Ilalo St., Honolulu, HI 96813, USA
- John A. Burns School of Medicine, University of Hawaii, 651 Ilalo St., Honolulu, HI 96813, USA
| | - Reinhold Penner
- Center for Biomedical Research, The Queen’s Medical Center, 1301 Punchbowl St., Honolulu, HI 96813, USA
- University of Hawaii Cancer Center, 651 Ilalo St., Honolulu, HI 96813, USA
- John A. Burns School of Medicine, University of Hawaii, 651 Ilalo St., Honolulu, HI 96813, USA
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Zheng Y, Huang Q, Zhang Y, Geng L, Wang W, Zhang H, He X, Li Q. Multimodal roles of transient receptor potential channel activation in inducing pathological tissue scarification. Front Immunol 2023; 14:1237992. [PMID: 37705977 PMCID: PMC10497121 DOI: 10.3389/fimmu.2023.1237992] [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: 06/10/2023] [Accepted: 08/15/2023] [Indexed: 09/15/2023] Open
Abstract
Transient receptor potential (TRP) channels are a class of transmembrane proteins that can sense a variety of physical/chemical stimuli, participate in the pathological processes of various diseases and have attracted increasing attention from researchers. Recent studies have shown that some TRP channels are involved in the development of pathological scarification (PS) and directly participate in PS fibrosis and re-epithelialization or indirectly activate immune cells to release cytokines and neuropeptides, which is subdivided into immune inflammation, fibrosis, pruritus and mechanical forces increased. This review elaborates on the characteristics of TRP channels, the mechanism of PS and how TRP channels mediate the development of PS, summarizes the important role of TRP channels in the different pathogenesis of PS and proposes that therapeutic strategies targeting TRP will be important for the prevention and treatment of PS. TRP channels are expected to become new targets for PS, which will make further breakthroughs and provide potential pharmacological targets and directions for the in-depth study of PS.
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Affiliation(s)
| | | | | | | | | | | | - Xiang He
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qiannan Li
- Department of Dermatology, Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Liu Y, Lyu Y, Zhu L, Wang H. Role of TRP Channels in Liver-Related Diseases. Int J Mol Sci 2023; 24:12509. [PMID: 37569884 PMCID: PMC10420300 DOI: 10.3390/ijms241512509] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
The liver plays a crucial role in preserving the homeostasis of an entire organism by metabolizing both endogenous and exogenous substances, a process that relies on the harmonious interactions of hepatocytes, hepatic stellate cells (HSCs), Kupffer cells (KCs), and vascular endothelial cells (ECs). The disruption of the liver's normal structure and function by diverse pathogenic factors imposes a significant healthcare burden. At present, most of the treatments for liver disease are palliative in nature, rather than curative or restorative. Transient receptor potential (TRP) channels, which are extensively expressed in the liver, play a crucial role in regulating intracellular cation concentration and serve as the origin or intermediary stage of certain signaling pathways that contribute to liver diseases. This review provides an overview of recent developments in liver disease research, as well as an examination of the expression and function of TRP channels in various liver cell types. Furthermore, we elucidate the molecular mechanism by which TRP channels mediate liver injury, liver fibrosis, and hepatocellular carcinoma (HCC). Ultimately, the present discourse delves into the current state of research and extant issues pertaining to the targeting of TRP channels in the treatment of liver diseases and other ailments. Despite the numerous obstacles encountered, TRP channels persist as an extremely important target for forthcoming clinical interventions aimed at treating liver diseases.
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Affiliation(s)
- Yusheng Liu
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing 210009, China; (Y.L.); (Y.L.)
| | - Yihan Lyu
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing 210009, China; (Y.L.); (Y.L.)
| | - Lijuan Zhu
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing 210009, China;
| | - Hongmei Wang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing 210009, China; (Y.L.); (Y.L.)
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Fan X, Feng K, Liu Y, Yang L, Zhao Y, Tian L, Tang Y, Wang X. miR-135a Regulates Atrial Fibrillation by Targeting Smad3. Cardiovasc Ther 2023; 2023:8811996. [PMID: 37187923 PMCID: PMC10181910 DOI: 10.1155/2023/8811996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/12/2023] [Accepted: 04/20/2023] [Indexed: 05/17/2023] Open
Abstract
Background Atrial fibrillation (AF) is the most common arrhythmia in clinical. Atrial fibrosis is a hallmark feature of atrial structural remodeling in AF, which is regulated by the TGF-β1/Smad3 pathway. Recent studies have implicated that miRNAs are involved in the process of AF. However, the regulatory mechanisms of miRNAs remain largely unknown. This study is aimed at investigating the function and regulatory network of miR-135a in AF. Methods In vivo, the plasma was collected from patients with AF and non-AF subjects. Adult SD rats were induced by acetylcholine (ACh) (66 μg/ml)-CaCl2 (10 mg/ml) to establish an AF rat model. In vitro, atrial fibroblasts (AFs), isolated from adult SD rats, were treated with high-frequency electrical stimulation (HES) (12 h) and hypoxia (24 h) to mimic the AF and atrial fibrosis, respectively. miR-135a expression was detected through quantitative real-time polymerase chain reaction (qRT-PCR). The association between miR-135a and Smad3 was speculated by the TargetScan database and confirmed by the luciferase reporter assay. Fibrosis-related genes, Smad3, and TRPM7 were all assessed. Results The expression of miR-135a was markedly decreased in the plasma of AF patients and AF rats, which was consistent with that in HES-treated and hypoxia-treated AFs. Smad3 was identified as a target of miR-135a. the downregulation of miR-135a was associated with the enhancement of Smad3/TRPM7 expressions in AFs. Additionally, the knockdown of Smad3 significantly reduced the expression of TRPM7 and further inhibited atrial fibrosis. Conclusions Our study demonstrates that miR-135a regulates AF via Smad3/TRPM7, which is a potential therapeutic target for AF.
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Affiliation(s)
- Xueting Fan
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- Department of Pharmacy, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Kai Feng
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yonghui Liu
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Leixi Yang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yizhuo Zhao
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- Department of Pharmacy, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo 315010, China
| | - Liping Tian
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yiqun Tang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xiaozhi Wang
- Department of Cardiology, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
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Yan P, Ke B, Fang X. Ion channels as a therapeutic target for renal fibrosis. Front Physiol 2022; 13:1019028. [PMID: 36277193 PMCID: PMC9581181 DOI: 10.3389/fphys.2022.1019028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Renal ion channel transport and electrolyte disturbances play an important role in the process of functional impairment and fibrosis in the kidney. It is well known that there are limited effective drugs for the treatment of renal fibrosis, and since a large number of ion channels are involved in the renal fibrosis process, understanding the mechanisms of ion channel transport and the complex network of signaling cascades between them is essential to identify potential therapeutic approaches to slow down renal fibrosis. This review summarizes the current work of ion channels in renal fibrosis. We pay close attention to the effect of cystic fibrosis transmembrane conductance regulator (CFTR), transmembrane Member 16A (TMEM16A) and other Cl− channel mediated signaling pathways and ion concentrations on fibrosis, as well as the various complex mechanisms for the action of Ca2+ handling channels including Ca2+-release-activated Ca2+ channel (CRAC), purinergic receptor, and transient receptor potential (TRP) channels. Furthermore, we also focus on the contribution of Na+ transport such as epithelial sodium channel (ENaC), Na+, K+-ATPase, Na+-H+ exchangers, and K+ channels like Ca2+-activated K+ channels, voltage-dependent K+ channel, ATP-sensitive K+ channels on renal fibrosis. Proposed potential therapeutic approaches through further dissection of these mechanisms may provide new therapeutic opportunities to reduce the burden of chronic kidney disease.
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Berlansky S, Sallinger M, Grabmayr H, Humer C, Bernhard A, Fahrner M, Frischauf I. Calcium Signals during SARS-CoV-2 Infection: Assessing the Potential of Emerging Therapies. Cells 2022; 11:253. [PMID: 35053369 PMCID: PMC8773957 DOI: 10.3390/cells11020253] [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: 12/11/2021] [Revised: 01/05/2022] [Accepted: 01/11/2022] [Indexed: 01/09/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a positive-sense single-stranded RNA virus that causes coronavirus disease 2019 (COVID-19). This respiratory illness was declared a pandemic by the world health organization (WHO) in March 2020, just a few weeks after being described for the first time. Since then, global research effort has considerably increased humanity's knowledge about both viruses and disease. It has also spawned several vaccines that have proven to be key tools in attenuating the spread of the pandemic and severity of COVID-19. However, with vaccine-related skepticism being on the rise, as well as breakthrough infections in the vaccinated population and the threat of a complete immune escape variant, alternative strategies in the fight against SARS-CoV-2 are urgently required. Calcium signals have long been known to play an essential role in infection with diverse viruses and thus constitute a promising avenue for further research on therapeutic strategies. In this review, we introduce the pivotal role of calcium signaling in viral infection cascades. Based on this, we discuss prospective calcium-related treatment targets and strategies for the cure of COVID-19 that exploit viral dependence on calcium signals.
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Affiliation(s)
| | | | | | | | | | - Marc Fahrner
- Institute of Biophysics, Johannes Kepler University Linz, Gruberstrasse 40, 4020 Linz, Austria; (S.B.); (M.S.); (H.G.); (C.H.); (A.B.)
| | - Irene Frischauf
- Institute of Biophysics, Johannes Kepler University Linz, Gruberstrasse 40, 4020 Linz, Austria; (S.B.); (M.S.); (H.G.); (C.H.); (A.B.)
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Jia T, Wang X, Tang Y, Yu W, Li C, Cui S, Zhu J, Meng W, Wang C, Wang Q. Sacubitril Ameliorates Cardiac Fibrosis Through Inhibiting TRPM7 Channel. Front Cell Dev Biol 2021; 9:760035. [PMID: 34778271 PMCID: PMC8586221 DOI: 10.3389/fcell.2021.760035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/11/2021] [Indexed: 12/11/2022] Open
Abstract
Heart failure caused by cardiac fibrosis has become a major challenge of public health worldwide. Cardiomyocyte programmed cell death (PCD) and activation of fibroblasts are crucial pathological features, both of which are associated with aberrant Ca2+ influx. Transient receptor potential cation channel subfamily M member 7 (TRPM7), the major Ca2+ permeable channel, plays a regulatory role in cardiac fibrosis. In this study, we sought to explore the mechanistic details for sacubitril, a component of sacubitril/valsartan, in treating cardiac fibrosis. We demonstrated that sacubitril/valsartan could effectively ameliorate cardiac dysfunction and reduce cardiac fibrosis induced by isoprotereno (ISO) in vivo. We further investigated the anti-fibrotic effect of sacubitril in fibroblasts. LBQ657, the metabolite of sacubitril, could significantly attenuate transforming growth factor-β 1 (TGF-β1) induced cardiac fibrosis by blocking TRPM7 channel, rather than suppressing its protein expression. In addition, LBQ657 reduced hypoxia-induced cardiomyocyte PCD via suppression of Ca2+ influx regulated by TRPM7. These findings suggested that sacubitril ameliorated cardiac fibrosis by acting on both fibroblasts and cardiomyocytes through inhibiting TRPM7 channel.
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Affiliation(s)
- Tian Jia
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Xiaozhi Wang
- Department of Cardiology, The First Affiliated Hospital With Nanjing Medical University, Nanjing, China
| | - Yiqun Tang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Wenying Yu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China
| | - Chenhui Li
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Shufang Cui
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Juanjuan Zhu
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Wei Meng
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Chen Wang
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
| | - Quanyi Wang
- State Key Laboratory of Natural Medicines, Department of Life Sciences and Technology, China Pharmaceutical University, Nanjing, China
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Du Preez S, Cabanas H, Staines D, Marshall-Gradisnik S. Potential Implications of Mammalian Transient Receptor Potential Melastatin 7 in the Pathophysiology of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:10708. [PMID: 34682454 PMCID: PMC8535478 DOI: 10.3390/ijerph182010708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 11/25/2022]
Abstract
The transient receptor potential (TRP) superfamily of ion channels is involved in the molecular mechanisms that mediate neuroimmune interactions and activities. Recent advancements in neuroimmunology have identified a role for TRP cation channels in several neuroimmune disorders including amyotropic lateral sclerosis, multiple sclerosis, and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). ME/CFS is a debilitating disorder with an obscure aetiology, hence considerable examination of its pathobiology is warranted. Dysregulation of TRP melastatin (TRPM) subfamily members and calcium signalling processes are implicated in the neurological, immunological, cardiovascular, and metabolic impairments inherent in ME/CFS. In this review, we present TRPM7 as a potential candidate in the pathomechanism of ME/CFS, as TRPM7 is increasingly recognized as a key mediator of physiological and pathophysiological mechanisms affecting neurological, immunological, cardiovascular, and metabolic processes. A focused examination of the biochemistry of TRPM7, the role of this protein in the aforementioned systems, and the potential of TRPM7 as a molecular mechanism in the pathophysiology of ME/CFS will be discussed in this review. TRPM7 is a compelling candidate to examine in the pathobiology of ME/CFS as TRPM7 fulfils several key roles in multiple organ systems, and there is a paucity of literature reporting on its role in ME/CFS.
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Affiliation(s)
- Stanley Du Preez
- National Centre for Neuroimmunology and Emerging Diseases, Menzies Health Institute, Griffith University, Gold Coast 4215, Australia; (D.S.); (S.M.-G.)
- Consortium Health International for Myalgic Encephalomyelitis, Menzies Health Institute Queensland, Griffith University, Gold Coast 4215, Australia;
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast 4215, Australia
- School of Medicine and Dentistry, Griffith University, Gold Coast 4215, Australia
| | - Helene Cabanas
- Consortium Health International for Myalgic Encephalomyelitis, Menzies Health Institute Queensland, Griffith University, Gold Coast 4215, Australia;
- Institut de Recherche Saint Louis, Université de Paris, INSERM U944 and CNRS UMR 7212, Hôpital Saint Louis, APHP, 75010 Paris, France
| | - Donald Staines
- National Centre for Neuroimmunology and Emerging Diseases, Menzies Health Institute, Griffith University, Gold Coast 4215, Australia; (D.S.); (S.M.-G.)
- Consortium Health International for Myalgic Encephalomyelitis, Menzies Health Institute Queensland, Griffith University, Gold Coast 4215, Australia;
| | - Sonya Marshall-Gradisnik
- National Centre for Neuroimmunology and Emerging Diseases, Menzies Health Institute, Griffith University, Gold Coast 4215, Australia; (D.S.); (S.M.-G.)
- Consortium Health International for Myalgic Encephalomyelitis, Menzies Health Institute Queensland, Griffith University, Gold Coast 4215, Australia;
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Jaffal SM, Abbas MA. TRP channels in COVID-19 disease: Potential targets for prevention and treatment. Chem Biol Interact 2021; 345:109567. [PMID: 34166652 PMCID: PMC8217345 DOI: 10.1016/j.cbi.2021.109567] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 01/05/2023]
Abstract
Coronavirus disease 2019 [COVID-19] is a global health threat caused by severe acute respiratory syndrome coronavirus 2 [SARS-CoV2] that requires two proteins for entry: angiotensin-converting enzyme 2 [ACE2] and -membrane protease serine 2 [TMPRSS2]. Many patients complain from pneumonia, cough, fever, and gastrointestinal (GI) problems. Notably, different TRP channels are expressed in various tissues infected by SARS-CoV-2. TRP channels are cation channels that show a common architecture with high permeability to calcium [Ca2+] in most sub-families. Literature review shed light on the possible role of TRP channels in COVID-19 disease. TRP channels may take part in inflammation, pain, fever, anosmia, ageusia, respiratory, cardiovascular, GI and neurological complications related to COVID-19. Also, TRP channels could be the targets for many active compounds that showed effectiveness against SARS-CoV-2. Desensitization or blocking TRP channels by antibodies, aptamers, small molecules or venoms can be an option for COVID-19 prevention and future treatment. This review provides insights into the involvement of TRP channels in different symptoms and mechanisms of SARS-CoV-2 , potential treatments targeting these channels and highlights missing gaps in literature.
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Affiliation(s)
- Sahar M Jaffal
- Department of Biological Sciences, Faculty of Science, The University of Jordan, 11942, Amman, Jordan.
| | - Manal A Abbas
- Department of Medical Laboratory Sciences, Faculty of Allied Medical Sciences, Al-Ahliyya Amman University, 19328, Amman, Jordan; Pharmacological and Diagnostic Research Center, Al-Ahliyya Amman University, 19328, Amman, Jordan
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Zhi Y, Wang H, Huang B, Yan G, Yan LZ, Zhang W, Zhang J. Panax Notoginseng Saponins suppresses TRPM7 via the PI3K/AKT pathway to inhibit hypertrophic scar formation in vitro. Burns 2020; 47:894-905. [PMID: 33143990 DOI: 10.1016/j.burns.2020.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/17/2020] [Accepted: 10/07/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hypertrophic scar (HS) formation, a type of dermal fibroproliferative condition, is a frequent complication in wound healing resulting from burns, severe trauma, and surgical procedures. The effects of Panax Notoginseng Saponins (PNS) on the HS formation remain relatively under-explored. Hence, this study was intended to interrogate anti-apoptosis and anti-fibrosis effects of PNS on the hypertrophic scar fibroblasts (HSFs) during HS formation and assess the involvement of TRPM7 and PI3K/AKT signaling pathway. METHODS Using MTT and CCK-8 assays, we evaluated cell cytotoxicity and cell viability. Collagen I/III (col 1/3) and α-SMA expression levels were assessed through immunofluorescence and western blot, and cell migration, cell apoptosis and cell cycle were examined with applications of wound healing, TUNEL staining and flow cytometry. TRPM7, PI3K/AKT, TGF-β1 and related-proteins were quantified using RT-qPCR and western blot. RESULTS PNS administration could suppress TRPM7 expression and the viability of HSFs in a dose-dependent manner. Moreover, PNS could restrain the HS formation and ECM deposition by decreasing col 1/3 and α-SMA synthesis, suppressing cell migration, and boosting apoptosis and G1 arrest. Notably, this study revealed that PNS inhibited PI3K/AKT activation in HSFs. Besides, knockdown of TRPM7 enhanced therapeutic effects of PNS on HSFs, but overexpression markedly reversed above mentioned effects of PNS on HSFs. CONCLUSION This study suggested that PNS hampered scar formation might via inhibiting ECM and stimulating cell apoptosis by modulating the PI3K/AKT signaling. Overall, these findings in the present study could support the use of PNS for preventing HS formation, and TRPM7 may be a novel molecular target for treating HS.
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Affiliation(s)
- Yan Zhi
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Hong Wang
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Bin Huang
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Gang Yan
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Long-Zong Yan
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Wei Zhang
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China
| | - Jia Zhang
- Department of Burn Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, China.
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Wei Y, Wu Y, Feng K, Zhao Y, Tao R, Xu H, Tang Y. Astragaloside IV inhibits cardiac fibrosis via miR-135a-TRPM7-TGF-β/Smads pathway. JOURNAL OF ETHNOPHARMACOLOGY 2020; 249:112404. [PMID: 31739105 DOI: 10.1016/j.jep.2019.112404] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 09/19/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cardiac fibrosis is a common characteristic of many cardiac diseases. Our previous results showed that TRPM7 channel played an important role in the fibrosis process. MicroRNA-135a was reported to get involved in the fibrotic process. Astragalus membranaceus (Fisch.) Bunge was widely used in Chinese traditional medicine and showed cardiac protective effects in previous researches. Astragaloside IV(ASG), which is regarded as the most important ingredient of Astragalus, has been showed the effect of cardiac protection via various mechanisms, while no data suggested its action related to miRNAs regulation. AIM OF THE STUDY The objective of this article is to investigate the inhibition effect of ASG on cardiac fibrosis through the miR-135a-TRPM7-TGF-β/Smads pathway. MATERIALS AND METHODS We extracted the active components from herb according to the paper and measured the content of ASG from the mixture via HPLC. The inhibition potency of cardiac hypertrophy between total extract of Astragalus and ASG was compared. SD rats were treated with ISO (5 mg/kg/day) subcutaneously (s.c.) for 14 days, ASG (10 mg/kg/d) and Astragalus extract (AE) (4.35 g/kg/d, which contained about ASG 10 mg) were given p.o. from the 6th day of the modeling. Cardiac fibroblasts (CFs) of neonatal rats were incubated with ISO (10 μM) and treated with ASG (10 μM) simultaneously for 24 h. RESULTS The results showed that both AE and ASG treatment reduced the TRPM7 expression from the gene level and inhibited cardiac fibrosis. ASG group showed similar potency as the AE mixture. ASG treatment significantly decreased the current, mRNA and protein expression of TRPM7 which was one of targets of miR-135a. The activation of TGF-β/Smads pathway was suppressed and the expression of α-SMA and Collagen I were also decreased obviously. In addition, our results showed that there was a positive feedback between the activation of TGF-β/Smads pathway and the elevation of TRPM7, both of which could promote the development of myocardial fibrosis. CONCLUSIONS AE had the effect of cardiac fibrosis inhibition and decreased the mRNA expression of TRPM7. ASG, as one of the effective ingredients of AE, showed the same potency when given the same dose. ASG inhibited cardiac fibrosis by targeting the miR-135a-TRPM7-TGF-β/Smads pathway.
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Affiliation(s)
- Yanchun Wei
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Yan Wu
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Kai Feng
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Yizhuo Zhao
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Ru Tao
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Haonan Xu
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China
| | - Yiqun Tang
- Department of Clinical Pharmacy, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, PR China.
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Suzuki S, Penner R, Fleig A. TRPM7 contributes to progressive nephropathy. Sci Rep 2020; 10:2333. [PMID: 32047249 PMCID: PMC7012919 DOI: 10.1038/s41598-020-59355-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/27/2020] [Indexed: 12/03/2022] Open
Abstract
TRPM7 belongs to the Transient Receptor Potential Melastatin family of ion channels and is a divalent cation-conducting ion channel fused with a functional kinase. TRPM7 plays a key role in a variety of diseases, including neuronal death in ischemia, cancer, cardiac atrial fibrillation, malaria invasion. TRPM7 is aberrantly over-expressed in lung, liver and heart fibrosis. It is also overexpressed after renal ischemia-reperfusion, an event that induces kidney injury and fibrosis. However, the role of TRPM7 in kidney fibrosis is unclear. Using the unilateral ureteral obstruction (UUO) mouse model, we examined whether TRPM7 contributes to progressive renal damage and fibrosis. We find that TRPM7 expression increases in UUO kidneys. Systemic application of NS8593, a known TRPM7 inhibitor, prevents kidney atrophy in UUO kidneys, retains tubular formation, and reduces TRPM7 expression to normal levels. Cell proliferation of both tubular epithelial cells and interstitial cells is reduced by NS8593 treatment in UUO kidneys, as are TGF-β1/Smad signaling events. We conclude that TRPM7 is upregulated during inflammatory renal damage and propose that pharmacological intervention targeting TRPM7 may prove protective in progressive kidney fibrosis.
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Affiliation(s)
- Sayuri Suzuki
- Center for Biomedical Research, The Queen's Medical Center, 1301 Punchbowl St., Honolulu, HI, 96813, USA. .,John A. Burns School of Medicine, University of Hawaii, 651 Ilalo St., Honolulu, HI, 96813, USA.
| | - Reinhold Penner
- Center for Biomedical Research, The Queen's Medical Center, 1301 Punchbowl St., Honolulu, HI, 96813, USA.,University of Hawaii Cancer Center, University of Hawaii, 651 Ilalo St., Honolulu, HI, 96813, USA.,John A. Burns School of Medicine, University of Hawaii, 651 Ilalo St., Honolulu, HI, 96813, USA
| | - Andrea Fleig
- Center for Biomedical Research, The Queen's Medical Center, 1301 Punchbowl St., Honolulu, HI, 96813, USA.,University of Hawaii Cancer Center, University of Hawaii, 651 Ilalo St., Honolulu, HI, 96813, USA.,John A. Burns School of Medicine, University of Hawaii, 651 Ilalo St., Honolulu, HI, 96813, USA
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13
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Falcón D, Galeano-Otero I, Calderón-Sánchez E, Del Toro R, Martín-Bórnez M, Rosado JA, Hmadcha A, Smani T. TRP Channels: Current Perspectives in the Adverse Cardiac Remodeling. Front Physiol 2019; 10:159. [PMID: 30881310 PMCID: PMC6406032 DOI: 10.3389/fphys.2019.00159] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 02/08/2019] [Indexed: 12/22/2022] Open
Abstract
Calcium is an important second messenger required not only for the excitation-contraction coupling of the heart but also critical for the activation of cell signaling pathways involved in the adverse cardiac remodeling and consequently for the heart failure. Sustained neurohumoral activation, pressure-overload, or myocardial injury can cause pathologic hypertrophic growth of the heart followed by interstitial fibrosis. The consequent heart’s structural and molecular adaptation might elevate the risk of developing heart failure and malignant arrhythmia. Compelling evidences have demonstrated that Ca2+ entry through TRP channels might play pivotal roles in cardiac function and pathology. TRP proteins are classified into six subfamilies: TRPC (canonical), TRPV (vanilloid), TRPM (melastatin), TRPA (ankyrin), TRPML (mucolipin), and TRPP (polycystin), which are activated by numerous physical and/or chemical stimuli. TRP channels participate to the handling of the intracellular Ca2+ concentration in cardiac myocytes and are mediators of different cardiovascular alterations. This review provides an overview of the current knowledge of TRP proteins implication in the pathologic process of some frequent cardiac diseases associated with the adverse cardiac remodeling such as cardiac hypertrophy, fibrosis, and conduction alteration.
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Affiliation(s)
- Debora Falcón
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain
| | - Isabel Galeano-Otero
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain
| | - Eva Calderón-Sánchez
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain.,CIBERCV, Madrid, Spain
| | - Raquel Del Toro
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain.,CIBERCV, Madrid, Spain
| | - Marta Martín-Bórnez
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain
| | - Juan A Rosado
- Department of Physiology (Cell Physiology Research Group), University of Extremadura, Cáceres, Spain
| | - Abdelkrim Hmadcha
- Department of Generation and Cell Therapy, Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER), University of Pablo de Olavide-University of Seville-CSIC, Sevilla, Spain.,CIBERDEM, Madrid, Spain
| | - Tarik Smani
- Department of Medical Physiology and Biophysics, Institute of Biomedicine of Seville, University of Seville, Sevilla, Spain.,CIBERCV, Madrid, Spain
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14
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Kamermans A, Planting KE, Jalink K, van Horssen J, de Vries HE. Reactive astrocytes in multiple sclerosis impair neuronal outgrowth through TRPM7-mediated chondroitin sulfate proteoglycan production. Glia 2018; 67:68-77. [PMID: 30453391 PMCID: PMC6587975 DOI: 10.1002/glia.23526] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 02/06/2023]
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disorder of the central nervous system (CNS), characterized by inflammation‐mediated demyelination, axonal injury and neurodegeneration. The mechanisms underlying impaired neuronal function are not fully understood, but evidence is accumulating that the presence of the gliotic scar produced by reactive astrocytes play a critical role in these detrimental processes. Here, we identified astrocytic Transient Receptor Potential cation channel, subfamily M, member 7 (TRPM7), a Ca2+‐permeable nonselective cation channel, as a novel player in the formation of a gliotic scar. TRPM7 was found to be highly expressed in reactive astrocytes within well‐characterized MS lesions and upregulated in primary astrocytes under chronic inflammatory conditions. TRPM7 overexpressing astrocytes impaired neuronal outgrowth in vitro by increasing the production of chondroitin sulfate proteoglycans, a key component of the gliotic scar. These findings indicate that astrocytic TRPM7 is a critical regulator of the formation of a gliotic scar and provide a novel mechanism by which reactive astrocytes affect neuronal outgrowth.
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Affiliation(s)
- Alwin Kamermans
- Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, MS center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Kirsten E Planting
- Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, MS center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Kees Jalink
- Department of Cell Biology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Jack van Horssen
- Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, MS center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Helga E de Vries
- Department of Molecular Cell Biology and Immunology, Amsterdam Neuroscience, MS center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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15
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Inoue R, Kurahara LH, Hiraishi K. TRP channels in cardiac and intestinal fibrosis. Semin Cell Dev Biol 2018; 94:40-49. [PMID: 30445149 DOI: 10.1016/j.semcdb.2018.11.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/05/2018] [Accepted: 11/09/2018] [Indexed: 02/06/2023]
Abstract
It is now widely accepted that advanced fibrosis underlies many chronic inflammatory disorders and is the main cause of morbidity and mortality of the modern world. The pathogenic mechanism of advanced fibrosis involves diverse and intricate interplays between numerous extracellular and intracellular signaling molecules, among which the non-trivial roles of a stress-responsive Ca2+/Na+-permeable cation channel superfamily, the transient receptor potential (TRP) protein, are receiving growing attention. Available evidence suggests that several TRP channels such as TRPC3, TRPC6, TRPV1, TRPV3, TRPV4, TRPA1, TRPM6 and TRPM7 may play central roles in the progression and/or prevention of fibroproliferative disorders in vital visceral organs such as lung, heart, liver, kidney, and bowel as well as brain, blood vessels and skin, and may contribute to both acute and chronic inflammatory processes involved therein. This short paper overviews the current knowledge accumulated in this rapidly growing field, with particular focus on cardiac and intestinal fibrosis, which are tightly associated with the pathogenesis of atrial fibrillation and inflammatory bowel diseases such as Crohn's disease.
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Affiliation(s)
- Ryuji Inoue
- Department of Physiology, Fukuoka University School of medicine, Nanakuma 7-451, Jonan-ku, Fukuoka 814-0180, Japan.
| | - Lin-Hai Kurahara
- Department of Physiology, Fukuoka University School of medicine, Nanakuma 7-451, Jonan-ku, Fukuoka 814-0180, Japan
| | - Keizo Hiraishi
- Department of Physiology, Fukuoka University School of medicine, Nanakuma 7-451, Jonan-ku, Fukuoka 814-0180, Japan
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16
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17
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Kurahara LH, Hiraishi K, Sumiyoshi M, Doi M, Hu Y, Aoyagi K, Jian Y, Inoue R. Significant contribution of TRPC6 channel-mediated Ca 2+ influx to the pathogenesis of Crohn's disease fibrotic stenosis. J Smooth Muscle Res 2017; 52:78-92. [PMID: 27818466 PMCID: PMC5321852 DOI: 10.1540/jsmr.52.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Intestinal fibrosis is an intractable complication of Crohn's disease (CD), and, when occurring excessively, causes severe intestinal obstruction that often necessitates surgical resection. The fibrosis is characterized by an imbalance in the turnover of extracellular matrix (ECM) components, where intestinal fibroblasts/myofibroblasts play active roles in ECM production, fibrogenesis and tissue remodeling, which eventually leads to the formation of stenotic lesions. There is however a great paucity of knowledge about how intestinal fibrosis initiates and progresses, which hampers the development of effective pharmacotherapies against CD. Recently, we explored the potential implications of transient receptor potential (TRP) channels in the pathogenesis of intestinal fibrosis, since they are known to act as cellular stress sensors/transducers affecting intracellular Ca2+ homeostasis/dynamics, and are involved in a broad spectrum of cell pathophysiology including inflammation and tissue remodeling. In this review, we will place a particular emphasis on the intestinal fibroblast/myofibroblast TRPC6 channel to discuss its modulatory effects on fibrotic responses and therapeutic potential for anti-fibrotic treatment against CD-related stenosis.
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Affiliation(s)
- Lin Hai Kurahara
- Department of Physiology, Fukuoka University School of Medicine, Fukuoka 814-0180, Japan
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18
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Yang VK, Loughran KA, Meola DM, Juhr CM, Thane KE, Davis AM, Hoffman AM. Circulating exosome microRNA associated with heart failure secondary to myxomatous mitral valve disease in a naturally occurring canine model. J Extracell Vesicles 2017; 6:1350088. [PMID: 28804599 PMCID: PMC5533140 DOI: 10.1080/20013078.2017.1350088] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/20/2017] [Indexed: 01/23/2023] Open
Abstract
Myxomatous mitral valve disease (MMVD) is functionally and histologically identical to mitral valve prolapse (MVP) in humans. Currently, there are no medical treatments that can delay the progression of this valvular disease or associated cardiac remodelling. Therefore, there is a need to understand the molecular pathology associated with MMVD and MVP better, and thus identify potential therapeutic targets. Circulating exosomes contain small RNA, including miRNA, which reflect cell physiology and pathology. This study explored the association between circulating exosomal miRNA (ex-miRNA) content and MMVD, heart failure due to MMVD (MMVD-CHF) and ageing, which is strongly associated with MMVD. Ex-miRNA was isolated from old normal/healthy dogs (n = 6), young normal dogs (n = 7), dogs with MMVD (n = 7) and dogs with MMVD-CHF (n = 7). Separately, total plasma miRNA was isolated from normal dogs (n = 8), dogs with MMVD (n = 8) and dogs with MMVD-CHF (n = 11). Using reverse transcription quantitative polymerase chain reaction, exosomal miR-181c (p = 0.003) and miR-495 (p = 0.0001) significantly increased in dogs with MMVD-CHF compared to the other three groups. Exosomal miR-9 (p = 0.002) increased in dogs with MMVD and MMVD-CHF compared to age-matched (old) normal dogs. Exosomal miR-599 (p = 0.002) decreased in dogs with MMVD compared to old normal dogs. In total plasma, 58 miRNA were deemed significantly different (p < 0.04) between normal dogs, dogs with MMVD and dogs with MMVD-CHF. However, in contrast to ex-miRNA, none of the miRNA in total plasma remained statistically significant if the false discovery rate was <15%. Changes in ex-miRNA are observed in dogs as they age (miR-9, miR-495 and miR-599), develop MMVD (miR-9 and miR-599) and progress from MMVD to CHF (miR-181c and miR-495). Ex-miRNA expression-level changes appear to be more specific to disease states than total plasma miRNA. RESPONSIBLE EDITOR Elena Aikawa, Harvard Medical School, USA
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Affiliation(s)
- Vicky K Yang
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Kerry A Loughran
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Dawn M Meola
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Christine M Juhr
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Kristen E Thane
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Airiel M Davis
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
| | - Andrew M Hoffman
- Department of Clinics Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, USA
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Modulation of TRP Channel Activity by Hydroxylation and Its Therapeutic Potential. Pharmaceuticals (Basel) 2017; 10:ph10020035. [PMID: 28346371 PMCID: PMC5490392 DOI: 10.3390/ph10020035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/15/2017] [Accepted: 03/24/2017] [Indexed: 12/15/2022] Open
Abstract
Two transient receptor potential (TRP) channels—TRPA1 and TRPV3—are post-translationally hydroxylated, resulting in oxygen-dependent regulation of channel activity. The enzymes responsible are the HIF prolyl hydroxylases (PHDs) and the asparaginyl hydroxylase factor inhibiting HIF (FIH). The PHDs and FIH are well characterized for their hydroxylation of the hypoxic inducible transcription factors (HIFs), mediating their hypoxic regulation. Consequently, these hydroxylases are currently being targeted therapeutically to modulate HIF activity in anemia, inflammation, and ischemic disease. Modulating the HIFs by targeting these hydroxylases may result in both desirable and undesirable effects on TRP channel activity, depending on the physiological context. For the best outcomes, these hydroxylases could be therapeutically targeted in pathologies where activation of both the HIFs and the relevant TRP channels are predicted to independently achieve positive outcomes, such as wound healing and obesity.
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