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Jörg M, Plehn JE, Kristen M, Lander M, Walz L, Lietz C, Wijns J, Pichot F, Rojas-Charry L, Wirtz Martin KM, Ruffini N, Kreim N, Gerber S, Motorin Y, Endres K, Rossmanith W, Methner A, Helm M, Friedland K. N1-methylation of adenosine (m 1A) in ND5 mRNA leads to complex I dysfunction in Alzheimer's disease. Mol Psychiatry 2024; 29:1427-1439. [PMID: 38287100 PMCID: PMC11189808 DOI: 10.1038/s41380-024-02421-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 01/31/2024]
Abstract
One mechanism of particular interest to regulate mRNA fate post-transcriptionally is mRNA modification. Especially the extent of m1A mRNA methylation is highly discussed due to methodological differences. However, one single m1A site in mitochondrial ND5 mRNA was unanimously reported by different groups. ND5 is a subunit of complex I of the respiratory chain. It is considered essential for the coupling of oxidation and proton transport. Here we demonstrate that this m1A site might be involved in the pathophysiology of Alzheimer's disease (AD). One of the pathological hallmarks of this neurodegenerative disease is mitochondrial dysfunction, mainly induced by Amyloid β (Aβ). Aβ mainly disturbs functions of complex I and IV of the respiratory chain. However, the molecular mechanism of complex I dysfunction is still not fully understood. We found enhanced m1A methylation of ND5 mRNA in an AD cell model as well as in AD patients. Formation of this m1A methylation is catalyzed by increased TRMT10C protein levels, leading to translation repression of ND5. As a consequence, here demonstrated for the first time, TRMT10C induced m1A methylation of ND5 mRNA leads to mitochondrial dysfunction. Our findings suggest that this newly identified mechanism might be involved in Aβ-induced mitochondrial dysfunction.
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Affiliation(s)
- Marko Jörg
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Johanna E Plehn
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Marco Kristen
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Marc Lander
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Lukas Walz
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Christine Lietz
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Julie Wijns
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Florian Pichot
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Liliana Rojas-Charry
- Institute of Molecular Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Katja M Wirtz Martin
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany
| | - Nicolas Ruffini
- Institute for Human Genetics, University Medical Center Johannes Gutenberg University, 55131, Mainz, Germany
| | - Nastasja Kreim
- Institute of Molecular Biology (IMB), 55128, Mainz, Germany
| | - Susanne Gerber
- Institute for Human Genetics, University Medical Center Johannes Gutenberg University, 55131, Mainz, Germany
| | - Yuri Motorin
- Epitranscriptomics and RNA Sequencing (EpiRNA-Seq) Core Facility, UMS2008 IBSLor CNRS, Université de Lorraine-INSERM, Biopôle, 9 Avenue de la Forêt de Haye, 54505, Vandœuvre-lès-Nancy, France
- IMoPA, UMR7365 CNRS, Université de Lorraine, Biopôle, 9 Avenue de la Forêt de Haye, 54505, Vandœuvre-lès-Nancy, France
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg University Mainz, Untere Zahlbacher Str. 8, 55131, Mainz, Germany
| | - Walter Rossmanith
- Center for Anatomy & Cell Biology, Medical University of Vienna, Währinger Straβe 13, 1090, Vienna, Austria
| | - Axel Methner
- Institute of Molecular Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Mark Helm
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany.
| | - Kristina Friedland
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, 55128, Mainz, Germany.
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Bremer S, Weitkemper E, Häberlein H, Franken S. St. John's wort extract Ze 117 alters the membrane fluidity of C6 glioma cells by influencing cellular cholesterol metabolism. Sci Rep 2024; 14:9878. [PMID: 38684848 PMCID: PMC11059309 DOI: 10.1038/s41598-024-60562-0] [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: 01/12/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
Chronic stress is associated with major depressive disorder (MDD). Increased glucocorticoid levels caused by uncontrolled release through the hypothalamic‒pituitary‒adrenal (HPA) axis can cause changes in the lipid content of the cellular plasma membrane. These changes are suspected to be involved in the development of depressive disorders. St. John's wort extract (SJW) Ze 117 has long been used as an alternative to synthetic antidepressants. Part of its effect may be due to an effect on the cellular lipid composition and thus on the properties of plasma membranes and receptor systems embedded therein. In this study, we investigated the effect of Ze 117 on that of dexamethasone and simvastatin. Dexamethasone increases the fluidity of C6 cell plasma membranes. This effect is counteracted by administration of Ze 117. Here we demonstrate that this is not due to a change in C16:1/16:0 and C18:1/18:0 ratios in C6 cell fatty acids. On the other hand, Ze 117 increased the cellular cholesterol content by 42.5%, whereas dexamethasone reduced cholesterol levels similarly to simvastatin. Lowering cholesterol levels by dexamethasone or simvastatin resulted in decreased β-arrestin 2 recruitment to the 5-HT1a receptor. This effect was counterbalanced by Ze 117, whereas the SJW extract had little effect on β-arrestin 2 recruitment in non-stressed cells. Taken together, in C6 cells, Ze 117 induces changes in membrane fluidity through its effect on cellular cholesterol metabolism rather than by affecting fatty acid saturation. This effect is reflected in an altered signal transduction of the 5-HT1a receptor under Ze 117 administration. The current in vitro results support the hypothesis that Ze 117 addresses relevant parts of the cellular lipid metabolism, possibly explaining some of the antidepressant actions of Ze 117.
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Affiliation(s)
- Swen Bremer
- Institute of Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Nussallee 11, 53115, Bonn, Germany
| | - Eva Weitkemper
- Institute of Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Nussallee 11, 53115, Bonn, Germany
| | - Hanns Häberlein
- Institute of Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Nussallee 11, 53115, Bonn, Germany
| | - Sebastian Franken
- Institute of Biochemistry and Molecular Biology, Medical Faculty, University of Bonn, Nussallee 11, 53115, Bonn, Germany.
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3
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Bouron A. Cellular neurobiology of hyperforin. Phytother Res 2024; 38:636-645. [PMID: 37963759 DOI: 10.1002/ptr.8063] [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: 04/27/2023] [Revised: 10/16/2023] [Accepted: 10/22/2023] [Indexed: 11/16/2023]
Abstract
Hyperforin is a phloroglucinol derivative isolated from the medicinal plant Hypericum perforatum (St John's wort, SJW). This lipophilic biomolecule displays antibacterial, pro-apoptotic, antiproliferative, and anti-inflammatory activities. In addition, in vitro and in vivo data showed that hyperforin is a promising molecule with potential applications in neurology and psychiatry. For instance, hyperforin possesses antidepressant properties, impairs the uptake of neurotransmitters, and stimulates the brain derived neurotrophic factor (BDNF)/TrkB neurotrophic signaling pathway, the adult hippocampal neurogenesis, and the brain homeostasis of zinc. In fact, hyperforin is a multi-target biomolecule with a complex neuropharmacological profile. However, one prominent pharmacological feature of hyperforin is its ability to influence the homeostasis of cations such as Ca2+ , Na+ , Zn2+ , and H+ . So far, the pathophysiological relevance of these actions is currently unknown. The main objective of the present work is to provide an overview of the cellular neurobiology of hyperforin, with a special focus on its effects on neuronal membranes and the movement of cations.
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Affiliation(s)
- Alexandre Bouron
- Université Grenoble Alpes, CNRS, CEA, Inserm UA13 BGE, Grenoble, France
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Peslalz P, Kraus F, Izzo F, Bleisch A, El Hamdaoui Y, Schulz I, Kany AM, Hirsch AKH, Friedland K, Plietker B. Selective Activation of a TRPC6 Ion Channel Over TRPC3 by Metalated Type-B Polycyclic Polyprenylated Acylphloroglucinols. J Med Chem 2023; 66:15061-15072. [PMID: 37922400 DOI: 10.1021/acs.jmedchem.3c01170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Selective modulation of TRPC6 ion channels is a promising therapeutic approach for neurodegenerative diseases and depression. A significant advancement showcases the selective activation of TRPC6 through metalated type-B PPAP, termed PPAP53. This success stems from PPAP53's 1,3-diketone motif facilitating metal coordination. PPAP53 is water-soluble and as potent as hyperforin, the gold standard in this field. In contrast to type-A, type-B PPAPs offer advantages such as gram-scale synthesis, easy derivatization, and long-term stability. Our investigations reveal PPAP53 selectively binding to the C-terminus of TRPC6. Although cryoelectron microscopy has resolved the majority of the TRPC6 structure, the binding site in the C-terminus remained unresolved. To address this issue, we employed state-of-the-art artificial-intelligence-based protein structure prediction algorithms to predict the missing region. Our computational results, validated against experimental data, indicate that PPAP53 binds to the 777LLKL780-region of the C-terminus, thus providing critical insights into the binding mechanism of PPAP53.
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Affiliation(s)
- Philipp Peslalz
- Chair of Organic Chemistry, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Bergstr. 66, Dresden 01069, Germany
| | - Frank Kraus
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55, Stuttgart 70569, Germany
| | - Flavia Izzo
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55, Stuttgart 70569, Germany
| | - Anton Bleisch
- Chair of Organic Chemistry, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Bergstr. 66, Dresden 01069, Germany
| | - Yamina El Hamdaoui
- Institut für Biomedizinische und Pharmazeutische Wissenschaften Johannes Gutenberg-Universität Mainz, Mainz 55128, Germany
| | - Ina Schulz
- Institut für Biomedizinische und Pharmazeutische Wissenschaften Johannes Gutenberg-Universität Mainz, Mainz 55128, Germany
| | - Andreas M Kany
- Helmholtz Institute for Pharm. Research Saarland (HIPS)-Helmholtz Centre for Infection Research (HZI), Saarbrücken 66123, Germany
| | - Anna K H Hirsch
- Helmholtz Institute for Pharm. Research Saarland (HIPS)-Helmholtz Centre for Infection Research (HZI), Saarbrücken 66123, Germany
- Department of Pharmacy, Saarland University, Saarbrücken 66123, Germany
| | - Kristina Friedland
- Institut für Biomedizinische und Pharmazeutische Wissenschaften Johannes Gutenberg-Universität Mainz, Mainz 55128, Germany
| | - Bernd Plietker
- Chair of Organic Chemistry, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Bergstr. 66, Dresden 01069, Germany
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55, Stuttgart 70569, Germany
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Liu B, Zhu X, Zhou Q, Su Y, Qian Y, Ma Z, Gu X, Xia T. Activating ryanodine receptor improves isoflurane-induced cognitive dysfunction. Brain Res Bull 2023; 204:110790. [PMID: 37852420 DOI: 10.1016/j.brainresbull.2023.110790] [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: 07/30/2023] [Revised: 09/30/2023] [Accepted: 10/16/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND Postoperative cognitive dysfunction (POCD) is characterized by impaired learning and memory. 6 h duration isoflurane anesthesia is an important factor to induce POCD, and the dysfunction of ryanodine receptor (RyR) in the hippocampus may be involved in this process. We investigated the expression of RyR3 in the hippocampus of mice after 6-h duration isoflurane anesthesia, as well as the improvement of RyR receptor agonist caffeine on POCD mice, while attempting to identify the underlying molecular mechanism. MATERIALS We constructed a POCD model using 8-week-old male C57BL/6J mice that were exposed to 6-h duration isoflurane. Prior to the three-day cognitive behavioral experiment, RyR agonist caffeine were injected. Fear conditioning and location memory tests were used in behavioral studies. We also exposed the mouse neuroblastoma cell line Neuro-2a (N2A) to 6-h duration isoflurane exposure to simulate the conditions of in vivo cognitive dysfunction. We administered ryanodine receptor agonist (caffeine) and inhibitor (ryanodine) to N2a cells. Following that, we performed a series of bioinformatics analysis to discover proteins that are involved in the development of cognitive dysfunction. Rt-PCR and Western blot were used to assess mRNA level and protein expression. RESULTS 6-h duration isoflurane anesthesia induced cognitive dysfunction and increased RyR3 mRNA levels in hippocampus. The mRNA levels of RyR3 in cultured N2a cells after anesthesia were comparable to those in vivo, and the RyR agonist caffeine corrected the expression of some cognitive-related phenotypic proteins that were disturbed after anesthesia. Intraperitoneal injection of RyR agonist caffeine can improve cognitive function after isoflurane anesthesia in mice, and bioinformatics analyses suggest that CaMKⅣ may be involved in the molecular mechanism. CONCLUSION Ryanodine receptor agonist caffeine may improve cognitive dysfunction in mice after isoflurane anesthesia.
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Affiliation(s)
- Binwen Liu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China; Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.
| | - Xurui Zhu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China.
| | - Qingyun Zhou
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China; Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.
| | - Yan Su
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China; Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.
| | - Yue Qian
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China.
| | - Zhengliang Ma
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China.
| | - Xiaoping Gu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing 210008, China.
| | - Tianjiao Xia
- Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.
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Zernov N, Popugaeva E. Role of Neuronal TRPC6 Channels in Synapse Development, Memory Formation and Animal Behavior. Int J Mol Sci 2023; 24:15415. [PMID: 37895105 PMCID: PMC10607207 DOI: 10.3390/ijms242015415] [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: 09/08/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The transient receptor potential cation channel, subfamily C, member 6 (TRPC6), has been believed to adjust the formation of an excitatory synapse. The positive regulation of TRPC6 engenders synapse enlargement and improved learning and memory in animal models. TRPC6 is involved in different synaptoprotective signaling pathways, including antagonism of N-methyl-D-aspartate receptor (NMDAR), activation of brain-derived neurotrophic factor (BDNF) and postsynaptic store-operated calcium entry. Positive regulation of TRPC6 channels has been repeatedly shown to be good for memory formation and storage. TRPC6 is mainly expressed in the hippocampus, particularly in the dentate granule cells, cornu Ammonis 3 (CA3) pyramidal cells and gamma-aminobutyric acid (GABA)ergic interneurons. It has been observed that TRPC6 agonists have a great influence on animal behavior including memory formation and storage The purpose of this review is to collect the available information on the role of TRPC6 in memory formation in various parts of the brain to understand how TRPC6-specific pharmaceutical agents will affect memory in distinct parts of the central nervous system (CNS).
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Affiliation(s)
| | - Elena Popugaeva
- Laboratory of Molecular Neurodegeneration, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
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Zhao Y, Liu J, Liu S, Yang P, Liang Y, Ma J, Mao S, Sun C, Yang Y. Fibroblast exosomal TFAP2C induced by chitosan oligosaccharides promotes peripheral axon regeneration via the miR-132-5p/CAMKK1 axis. Bioact Mater 2023; 26:249-263. [PMID: 36936807 PMCID: PMC10020534 DOI: 10.1016/j.bioactmat.2023.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/03/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Chitosan and its degradation product, oligosaccharides, have been shown to facilitate peripheral nerve regeneration. However, the underlying mechanisms are not well understood. In this study, we analyzed the protein expression profiles in sciatic nerves after injury using proteomics. A group of proteins related to exosome packaging and transport is up-regulated by chitosan oligosaccharides (COS), implying that exosomes are involved in COS-induced peripheral nerve regeneration. In fact, exosomes derived from fibroblasts (f-EXOs) treated with COS significantly promoted axon extension and regeneration. Exosomal protein identification and functional studies, revealed that TFAP2C is a key factor in neurite outgrowth induced by COS-f-EXOs. Furthermore, we showed that TFAP2C targets the pri-miRNA-132 gene and represses miR-132-5p expression in dorsal root ganglion neurons. Camkk1 is a downstream substrate of miR-132-5p that positively affects axon extension. In rats, miR-132-5p antagomir stimulates CAMKK1 expression and improves axon regeneration and functional recovery in sciatic nerves after injury. Our data reveal the mechanism for COS in axon regeneration, that is COS induce fibroblasts to produce TFAP2C-enriched EXOs, which are then transferred into axons to promote axon regeneration via miR-132-5p/CAMKK1. Moreover, these results show a new facet of fibroblasts in axon regeneration in peripheral nerves.
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Affiliation(s)
- Yahong Zhao
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Jina Liu
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Sha Liu
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Panpan Yang
- School of Medicine, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Yunyun Liang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Jinyu Ma
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Susu Mao
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
| | - Cheng Sun
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
- Corresponding author.
| | - Yumin Yang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19 Qixiu Road, Nantong, Jiangsu, 226001, China
- Corresponding author.
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Zhang J, Ming S, Chen X, Zhang T, Qian H, Peng S, Ding Y. Herbal medicine as adjunctive therapy with antidepressants for post-stroke depression: a systematic review and network meta-analysis of randomized controlled trials. Front Pharmacol 2023; 14:1180071. [PMID: 37521479 PMCID: PMC10382276 DOI: 10.3389/fphar.2023.1180071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 06/26/2023] [Indexed: 08/01/2023] Open
Abstract
Background: Herbal medicine can provide adjunctive therapy for adults with post-stroke depression. This study summarizes the latest evidence regarding the harms and benefits of herbal antidepressants. Methods: The literature searched from the Cochrane Library (using the OVID platform), Embase, PubMed, the China National Knowledge Infrastructure (CNKI), the Wan Fang Data Knowledge Service Platform, and the China Scientific Journal Database (VIP) from their inception to 18 August 2021, for randomized controlled trials of herbal medicine in adults with post-stroke depression, were included in this systematic review and network meta-analysis. The search was updated on 1 December 2022. To summarize the evidence, the frequentist random-effect network meta-analyses were conducted. To categorize interventions, rate the certainty of the evidence, and present the findings, the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) frameworks were carried out. The registration number of this study on PROSPERO website is CRD 42021273956. Findings: Of 1132 citations identified from the search, 51 randomized clinical trials, totaling 4,507 participants, met the inclusion criteria for this study. For response rate, Shugan Jieyu capsule (SJC) plus selective serotonin reuptake inhibitors (SSRI), Jie-Yu Pills plus SSRI, and Wuling capsule plus SSRI were shown to be among the most effective with moderate certainty of evidence (RR: 1·45, 95%CI: 1·23 to 1·7; RR: 1·35, 95%CI: 1·09 to 1·68; RR: 1·32, 95%CI: 1·09 to 1·59). In terms of mean changes in Hamilton depression scale (HAMD) score after the completion of treatment, Wuling capsule plus Hypericum and Wuling capsule plus SSRI were found to be among the most effective in reducing symptoms of depression with moderate certainty of evidence (MD: 10·12, 95%CI: -17·25 to -2·99; MD: -3·81, 95%CI: -6·19 to -1·42). The network meta-analysis (NMA) showed that SJC may be a safer intervention than SSRI in terms of both total gastrointestinal and total nervous system events with moderate certainty of evidence (RR:0.34, 95%CI:0.18, 0.62 and RR: 0.11, 95%CI: 0.03, 0.35, respectively). Interpretation: SJC plus SSRI, Jie-Yu Pills plus SSRI, and Wuling capsule plus SSRI were among the most effective in terms of HAMD score reduction response rates. Low to very low certainty of evidence revealed no increased risk of gastrointestinal and nervous system events. Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=273956; Identifier: CRD42021273956.
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Affiliation(s)
- Jian Zhang
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, China
| | - Shuping Ming
- First Clinical College, Hubei University of Chinese Medicine, Wuhan, Hubei Province, China
| | - Xiaoming Chen
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, China
| | - Teng Zhang
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, China
| | - Hongyu Qian
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, China
| | - Shixiong Peng
- First Clinical College, Hubei University of Chinese Medicine, Wuhan, Hubei Province, China
| | - Yanbing Ding
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, China
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9
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She YJ, Xu HP, Gao Y, Wang Q, Zheng J, Ruan X. Calpain-TRPC6 signaling pathway contributes to propofol-induced developmental neurotoxicity in rats. Neurotoxicology 2023; 95:56-65. [PMID: 36640868 DOI: 10.1016/j.neuro.2023.01.004] [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: 11/13/2022] [Revised: 12/20/2022] [Accepted: 01/11/2023] [Indexed: 01/13/2023]
Abstract
Growing animal studies suggest a risk of neuronal damage following early childhood exposure to anesthesia and sedation drugs including propofol. Inhibition of transient receptor potential canonical 6 (TRPC6) degradation has been shown to protect neurons from neuronal damage induced by multiple brain injury models. Our aim was to investigate whether calpain-TRPC6 pathway is a target in propofol-induced neurotoxicity. Postnatal day (PND) 7 rats were exposed to five bolus injections of 25 mg/kg propofol or 10 % intralipid at hourly intervals. Neuronal injury was assessed by the expression pattern of TUNEL staining and cleaved-caspase-3. The Morris water maze test was used to evaluate learning and memory functions in later life. Pretreatments consisting of intracerebroventricular injections of a TRPC6 agonist, TRPC6 inhibitor, or calpain inhibitor were used to confirm the potential role of the calpain-TRPC6 pathway in propofol-induced neurotoxicity. Prolonged exposure to propofol induced neuronal injury, downregulation of TRPC6, and enhancement of calpain activity in the cerebral cortex up to 24 h after anesthesia. It also induced long-term behavioral disorders, manifesting as longer escape latency at PND40 and PND41 and as fewer platform-crossing times and less time spent in the target quadrant at PND42. These propofol-induced effects were attenuated by treatment with the TRPC6 agonist and exaggerated by the TRPC6 inhibitor. Pretreatment with the calpain inhibitor alleviated the propofol-induced TRPC6 downregulation and neuronal injury in the cerebral cortex. In conclusion, our data suggest that a calpain-TRPC6 signaling pathway contributes to propofol-induced acute cortical neuron injury and long-term behavioral disorders in rats.
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Affiliation(s)
- Ying-Jun She
- Department of Anesthesiology and Perioperative Medicine, Guangzhou Women and Children's Medical Center, Guangzhou 510600, China
| | - Hai-Ping Xu
- Department of Anesthesiology and Perioperative Medicine, Guangzhou Women and Children's Medical Center, Guangzhou 510600, China
| | - Yin Gao
- Department of Anesthesiology and Perioperative Medicine, Guangzhou Women and Children's Medical Center, Guangzhou 510600, China
| | - Qiong Wang
- Department of Anesthesiology and Perioperative Medicine, Guangzhou Women and Children's Medical Center, Guangzhou 510600, China
| | - Jun Zheng
- Department of Anesthesiology and Pain Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China
| | - Xiangcai Ruan
- Department of Anesthesiology and Pain Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, China.
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10
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Tan Y, Lu W, Yi X, Cai H, Yuan Y, Zhang S. Improvement of platelet preservation by inhibition of TRPC6. Transfus Med 2023. [PMID: 36746770 DOI: 10.1111/tme.12955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 12/27/2022] [Accepted: 01/16/2023] [Indexed: 02/08/2023]
Abstract
BACKGROUND The preservation of platelets (PLTs) by room temperature (RT) oscillation limits their shelf life to between 4 and 7 days because of the decrease in PLT function. TRPC6 is a non-selective mechanically sensitive cation channel that has been shown to mediate Ca2+ signalling, implying a role in PLT activation during preservation by RT oscillation. OBJECTIVES This study was designed to investigate whether inhibition of TRPC6 can improve the RT preservation of PLTs and the possible underlying mechanism. METHODS Human PLTs from whole blood were stored at 22 ± 2°C with oscillation in plasma or M-sol (mixture of solutions). BI-749327, a specific TRPC6 inhibitor, was administered throughout the preservation period. PLT distribution width (PDW), mean platelet volume (MPV), maximum platelet aggregation rate (MAR) and average aggregation rate (AAR) were measured. The MTT method was used to assess the relative viability of PLTs. Flow cytometry was used to measure the changes of Ca2+ concentration in PLTs and phosphatidylserine (PS) exposure on the PLT surface, and western blotting was used to assess the expression changes of platelet TRPC6 and CD62P proteins. RESULTS Compared with the control group, inhibition of TRPC6 with BI-749327 significantly reduced the PDW, MPV and Ca2+ concentration, the MAR and AAR were significantly increased, the expression of TRPC6 and CD62P protein was significantly down-regulated in PLTs, and the PS exposure was significantly reduced on the PLT surface. However, these effects were all reversed by activation of TRPC6. CONCLUSION Inhibition of TRPC6 improves the quality of PLT preservation by inhibiting the Ca2+ signal mediated by TRPC6.
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Affiliation(s)
- Yuanjia Tan
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine, China Three Gorges University, Yichang, China.,Department of Physiology, Medical College of China Three Gorges University, Yichang, China
| | - Wei Lu
- Office, The Blood Bank Center of Yichang City, Yichang, China
| | - Xiaomei Yi
- Office, The Blood Bank Center of Yichang City, Yichang, China
| | - Huili Cai
- Department of Hematology, Yichang Central People' Hospital, The First College of Clinical Medical Science, China Three Gorges University, Yichang, China
| | - Yurong Yuan
- Office, The Blood Bank Center of Yichang City, Yichang, China
| | - Shizhong Zhang
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine, China Three Gorges University, Yichang, China.,Department of Physiology, Medical College of China Three Gorges University, Yichang, China
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11
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Peng S, Zhou Y, Lu M, Wang Q. Review of Herbal Medicines for the Treatment of Depression. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221139082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Depression, a mental illness that is receiving increasing attention, is caused by multiple factors and genes and adversely affects social life and health. Several hypotheses have been proposed to clarify the pathogenesis of depression, and various synthetic antidepressants have been introduced to treat patients with depression. However, these drugs are effective only in a proportion of patients and fail to achieve complete remission. Recently, herbal medicines have received much attention as alternative treatments for depression because of their fewer side effects and lower costs. In this review, we have mainly focused on the herbal medicines that have been proven in clinical studies (especially randomized controlled trials and preclinical studies) to have antidepressant effects; we also describe the potential mechanisms of the antidepressant effects of those herbal medicines; the cellular and animal model of depression; and the development of novel drug delivery systems for herbal antidepressants. Finally, we objectively elaborate on the challenges of using herbal medicines as antidepressants and describe the benefits, adverse effects, and toxicity of these medicines.
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Affiliation(s)
- Siqi Peng
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yalan Zhou
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Meng Lu
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingzhong Wang
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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12
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Lin H, Lin WH, Lin F, Liu CY, Che CH, Huang HP. Potential Pleiotropic Genes and Shared Biological Pathways in Epilepsy and Depression Based on GWAS Summary Statistics. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:6799285. [PMID: 35463244 PMCID: PMC9019309 DOI: 10.1155/2022/6799285] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/01/2022] [Accepted: 03/08/2022] [Indexed: 11/17/2022]
Abstract
Current epidemiological and experimental studies have indicated the overlapping genetic foundation of epilepsy and depression. However, the detailed pleiotropic genetic etiology and neurobiological pathways have not been well understood, and there are many variants with underestimated effect on the comorbidity of the two diseases. Utilizing genome-wide association study (GWAS) summary statistics of epilepsy (15,212 cases and 29,677 controls) and depression (170,756 cases and 329,443 controls) from large consortia, we assessed the integrated gene-based association with both diseases by Multimarker Analysis of Genomic Annotation (MAGMA) and Fisher's meta-analysis. On the one hand, shared genes with significantly altered transcripts in Gene Expression Omnibus (GEO) data sets were considered as possible pleiotropic genes. On the other hand, the pathway enrichment analysis was conducted based on the gene lists with nominal significance in the gene-based association test of each disease. We identified a total of two pleiotropic genes (CD3G and SLCO3A1) with gene expression analysis validated and interpreted twenty-five common biological process supported with literature mining. This study indicates the potentially shared genes associated with both epilepsy and depression based on gene expression, meta-data analysis, and pathway enrichment strategy along with traditional GWAS and provides insights into the possible intersecting pathways that were not previously reported.
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Affiliation(s)
- Han Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Wan-Hui Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
- Intensive Care Unit, Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
- Fujian Key Laboratory of Molecular Neurology, Fuzhou 350001, China
| | - Feng Lin
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Chang-Yun Liu
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Chun-Hui Che
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Hua-Pin Huang
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
- Intensive Care Unit, Department of Neurology, Fujian Medical University Union Hospital, Fuzhou 350001, China
- Fujian Key Laboratory of Molecular Neurology, Fuzhou 350001, China
- Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou 350001, China
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13
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Mutations in trpγ, the homologue of TRPC6 autism candidate gene, causes autism-like behavioral deficits in Drosophila. Mol Psychiatry 2022; 27:3328-3342. [PMID: 35501408 PMCID: PMC9708601 DOI: 10.1038/s41380-022-01555-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 03/15/2022] [Accepted: 03/29/2022] [Indexed: 11/09/2022]
Abstract
Autism Spectrum Disorder (ASD) is characterized by impaired social communication, restricted interests, and repetitive and stereotyped behaviors. The TRPC6 (transient receptor potential channel 6) represents an ASD candidate gene under an oligogenic/multifactorial model based on the initial description and cellular characterization of an individual with ASD bearing a de novo heterozygous mutation disrupting TRPC6, together with the enrichment of disruptive TRPC6 variants in ASD cases as compared to controls. Here, we perform a clinical re-evaluation of the initial non-verbal patient, and also present eight newly reported individuals ascertained for ASD and bearing predicted loss-of-function mutations in TRPC6. In order to understand the consequences of mutations in TRPC6 on nervous system function, we used the fruit fly, Drosophila melanogaster, to show that null mutations in transient receptor gamma (trpγ; the fly gene most similar to TRPC6), cause a number of behavioral defects that mirror features seen in ASD patients, including deficits in social interactions (based on courtship behavior), impaired sleep homeostasis (without affecting the circadian control of sleep), hyperactivity in both young and old flies, and defects in learning and memory. Some defects, most notably in sleep, differed in severity between males and females and became normal with age. Interestingly, hyperforin, a TRPC6 agonist and the primary active component of the St. John's wort antidepressant, attenuated many of the deficits expressed by trpγ mutant flies. In summary, our results provide further evidence that the TRPC6 gene is a risk factor for ASD. In addition, they show that the behavioral defects caused by mutations in TRPC6 can be modeled in Drosophila, thereby establishing a paradigm to examine the impact of mutations in other candidate genes.
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14
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El Hamdaoui Y, Zheng F, Fritz N, Ye L, Tran MA, Schwickert K, Schirmeister T, Braeuning A, Lichtenstein D, Hellmich UA, Weikert D, Heinrich M, Treccani G, Schäfer MKE, Nowak G, Nürnberg B, Alzheimer C, Müller CP, Friedland K. Analysis of hyperforin (St. John's wort) action at TRPC6 channel leads to the development of a new class of antidepressant drugs. Mol Psychiatry 2022; 27:5070-5085. [PMID: 36224261 PMCID: PMC9763113 DOI: 10.1038/s41380-022-01804-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 09/02/2022] [Accepted: 09/14/2022] [Indexed: 01/14/2023]
Abstract
St. John's wort is an herb, long used in folk medicine for the treatment of mild depression. Its antidepressant constituent, hyperforin, has properties such as chemical instability and induction of drug-drug interactions that preclude its use for individual pharmacotherapies. Here we identify the transient receptor potential canonical 6 channel (TRPC6) as a druggable target to control anxious and depressive behavior and as a requirement for hyperforin antidepressant action. We demonstrate that TRPC6 deficiency in mice not only results in anxious and depressive behavior, but also reduces excitability of hippocampal CA1 pyramidal neurons and dentate gyrus granule cells. Using electrophysiology and targeted mutagenesis, we show that hyperforin activates the channel via a specific binding motif at TRPC6. We performed an analysis of hyperforin action to develop a new antidepressant drug that uses the same TRPC6 target mechanism for its antidepressant action. We synthesized the hyperforin analog Hyp13, which shows similar binding to TRPC6 and recapitulates TRPC6-dependent anxiolytic and antidepressant effects in mice. Hyp13 does not activate pregnan-X-receptor (PXR) and thereby loses the potential to induce drug-drug interactions. This may provide a new approach to develop better treatments for depression, since depression remains one of the most treatment-resistant mental disorders, warranting the development of effective drugs based on naturally occurring compounds.
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Affiliation(s)
- Yamina El Hamdaoui
- grid.5802.f0000 0001 1941 7111Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany
| | - Fang Zheng
- grid.5330.50000 0001 2107 3311Institute of Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Nikolas Fritz
- grid.5802.f0000 0001 1941 7111Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany
| | - Lian Ye
- grid.5802.f0000 0001 1941 7111Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany
| | - Mai Anh Tran
- grid.9613.d0000 0001 1939 2794Institute of Organic Chemistry and Macromolecular Chemistry, Faculty of Chemistry and Earth Science, Friedrich Schiller University Jena, Jena, Germany ,grid.5802.f0000 0001 1941 7111Biochemistry, Department of Chemistry, Johannes-Gutenberg Universität Mainz, Mainz, Germany
| | - Kevin Schwickert
- grid.5802.f0000 0001 1941 7111Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany
| | - Tanja Schirmeister
- grid.5802.f0000 0001 1941 7111Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany
| | - Albert Braeuning
- grid.417830.90000 0000 8852 3623Department of Food Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Dajana Lichtenstein
- grid.417830.90000 0000 8852 3623Department of Food Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Ute A. Hellmich
- grid.9613.d0000 0001 1939 2794Institute of Organic Chemistry and Macromolecular Chemistry, Faculty of Chemistry and Earth Science, Friedrich Schiller University Jena, Jena, Germany ,grid.5802.f0000 0001 1941 7111Biochemistry, Department of Chemistry, Johannes-Gutenberg Universität Mainz, Mainz, Germany ,grid.517250.4Cluster of Excellence “Balance of the Microverse”, Friedrich-Schiller-Uniersität Jena, Jena, Germany ,grid.7839.50000 0004 1936 9721Center for Biomolecular Magnetic Resonance, Goethe-University, Frankfurt, Germany
| | - Dorothee Weikert
- grid.5330.50000 0001 2107 3311Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Markus Heinrich
- grid.5330.50000 0001 2107 3311Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Giulia Treccani
- grid.410607.4Department of Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany ,grid.410607.4Institute of Anatomy, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Michael K. E. Schäfer
- grid.410607.4Department of Anesthesiology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1 (Bld. 505), 55131 Mainz, Germany
| | - Gabriel Nowak
- grid.5522.00000 0001 2162 9631Department of Pharmacobiology, Jagiellonian University Medical College, Krakow, Poland
| | - Bernd Nürnberg
- grid.10392.390000 0001 2190 1447Department of Pharmacology, Experimental Therapy & Toxicology, Eberhard-Karls-University of Tübingen, Tübingen, Germany
| | - Christian Alzheimer
- grid.5330.50000 0001 2107 3311Institute of Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Christian P. Müller
- grid.5330.50000 0001 2107 3311Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany ,grid.11875.3a0000 0001 2294 3534Centre for Drug Research, Universiti Sains Malaysia, 11800 Minden, Penang Malaysia
| | - Kristina Friedland
- Pharmacology & Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes-Gutenberg Universität Mainz (JGU), Mainz, Germany.
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15
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Nutraceuticals in mental diseases - Bridging the gap between traditional use and modern pharmacology. Curr Opin Pharmacol 2021; 61:62-68. [PMID: 34628304 DOI: 10.1016/j.coph.2021.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/12/2021] [Accepted: 08/26/2021] [Indexed: 01/02/2023]
Abstract
In evidence-based pharmacotherapy, the complexity of etiopathogenesis and pathophysiology of mental diseases has attracted comparably little consideration so far. The choice of currently available pharmacotherapies is predominantly guided by specific clinical phenotypes and is limited by low response rates and clinically relevant side effects. Nutraceuticals typically represent multicomponent compounds and may offer high therapeutic potential, by simultaneously addressing multiple aspects in mental disease pathogenesis with rather little side effects. Here, recent pharmacological research on natural products is assessed with focus on a multitarget therapeutic concept, based on shared molecular mechanisms, and in particular, on how far nutraceuticals might address such multitargets. Overcoming deficits regarding clearly defined compositions, concentration-dependent and causative structure-activity-response relationships, evaluation of bioavailability, metabolic fate, and long-term safety are crucial for translating potential plant-based drug candidates into proof-of-concept clinical studies.
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16
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Maleki-Ghaleh H, Siadati MH, Fallah A, Koc B, Kavanlouei M, Khademi-Azandehi P, Moradpur-Tari E, Omidi Y, Barar J, Beygi-Khosrowshahi Y, Kumar AP, Adibkia K. Antibacterial and Cellular Behaviors of Novel Zinc-Doped Hydroxyapatite/Graphene Nanocomposite for Bone Tissue Engineering. Int J Mol Sci 2021; 22:9564. [PMID: 34502473 PMCID: PMC8431478 DOI: 10.3390/ijms22179564] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/29/2021] [Accepted: 08/29/2021] [Indexed: 12/15/2022] Open
Abstract
Bacteria are one of the significant causes of infection in the body after scaffold implantation. Effective use of nanotechnology to overcome this problem is an exciting and practical solution. Nanoparticles can cause bacterial degradation by the electrostatic interaction with receptors and cell walls. Simultaneously, the incorporation of antibacterial materials such as zinc and graphene in nanoparticles can further enhance bacterial degradation. In the present study, zinc-doped hydroxyapatite/graphene was synthesized and characterized as a nanocomposite material possessing both antibacterial and bioactive properties for bone tissue engineering. After synthesizing the zinc-doped hydroxyapatite nanoparticles using a mechanochemical process, they were composited with reduced graphene oxide. The nanoparticles and nanocomposite samples were extensively investigated by transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. Their antibacterial behaviors against Escherichia coli and Staphylococcus aureus were studied. The antibacterial properties of hydroxyapatite nanoparticles were found to be improved more than 2.7 and 3.4 times after zinc doping and further compositing with graphene, respectively. In vitro cell assessment was investigated by a cell viability test and alkaline phosphatase activity using mesenchymal stem cells, and the results showed that hydroxyapatite nanoparticles in the culture medium, in addition to non-toxicity, led to enhanced proliferation of bone marrow stem cells. Furthermore, zinc doping in combination with graphene significantly increased alkaline phosphatase activity and proliferation of mesenchymal stem cells. The antibacterial activity along with cell biocompatibility/bioactivity of zinc-doped hydroxyapatite/graphene nanocomposite are the highly desirable and suitable biological properties for bone tissue engineering successfully achieved in this work.
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Affiliation(s)
- H. Maleki-Ghaleh
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51664-14766, Iran; (H.M.-G.); (J.B.)
| | - M. H. Siadati
- Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran 19919-43344, Iran;
| | - A. Fallah
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; (A.F.); (B.K.)
- Nanotechnology Research and Application Center (SUNUM), Sabanci University, Istanbul 34956, Turkey
| | - B. Koc
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; (A.F.); (B.K.)
- Nanotechnology Research and Application Center (SUNUM), Sabanci University, Istanbul 34956, Turkey
| | - M. Kavanlouei
- Materials Engineering Department, Faculty of Engineering, Urmia University, Urmia 57561-51818, Iran;
| | - P. Khademi-Azandehi
- Research Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, Tabriz 51335-1996, Iran;
| | - E. Moradpur-Tari
- Materials Engineering Department, Faculty of Engineering, Tarbiat Modares University, Tehran 14115-111, Iran;
| | - Y. Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL 33314, USA;
| | - J. Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51664-14766, Iran; (H.M.-G.); (J.B.)
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664-14766, Iran
| | - Y. Beygi-Khosrowshahi
- Department of Chemical Engineering, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz 53751-71379, Iran;
| | - Alan P. Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - K. Adibkia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz 51664-14766, Iran; (H.M.-G.); (J.B.)
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664-14766, Iran
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17
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Kornhuber J, Gulbins E. New Molecular Targets for Antidepressant Drugs. Pharmaceuticals (Basel) 2021; 14:894. [PMID: 34577594 PMCID: PMC8472072 DOI: 10.3390/ph14090894] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/27/2022] Open
Abstract
Major depressive disorder (MDD) is a common and severe mental disorder that is usually recurrent and has a high risk of suicide. This disorder manifests not only with psychological symptoms but also multiple changes throughout the body, including increased risks of obesity, diabetes, and cardiovascular disease. Peripheral markers of oxidative stress and inflammation are elevated. MDD is therefore best described as a multisystem whole-body disease. Pharmacological treatment with antidepressants usually requires several weeks before the desired effects manifest. Previous theories of depression, such as the monoamine or neurogenesis hypotheses, do not explain these characteristics well. In recent years, new mechanisms of action have been discovered for long-standing antidepressants that also shed new light on depression, including the sphingolipid system and the receptor for brain-derived neurotrophic factor (BDNF).
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Affiliation(s)
- Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Erich Gulbins
- Department of Molecular Biology, University of Duisburg-Essen, 45117 Essen, Germany;
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267, USA
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18
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Budantsev AL, Prikhodko VA, Varganova IV, Okovityi SV. BIOLOGICAL ACTIVITY OF HYPERICUM PERFORATUM L. (HYPERICACEAE): A REVIEW. PHARMACY & PHARMACOLOGY 2021. [DOI: 10.19163/2307-9266-2021-9-1-17-31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- A. L. Budantsev
- Komarov Botanical Institute of Russian Academy of Science
2, Prof. Popov St., St. Petersburg, Russia, 197376
| | - V. A. Prikhodko
- Saint Petersburg State Chemical and Pharmaceutical University
14, Prof. Popov St., St. Petersburg, Russia, 197376
| | - I. V. Varganova
- Komarov Botanical Institute of Russian Academy of Science
2, Prof. Popov St., St. Petersburg, Russia, 197376
| | - S. V. Okovityi
- Saint Petersburg State Chemical and Pharmaceutical University
14, Prof. Popov St., St. Petersburg, Russia, 197376
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19
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The Calcium/Calmodulin-Dependent Kinases II and IV as Therapeutic Targets in Neurodegenerative and Neuropsychiatric Disorders. Int J Mol Sci 2021; 22:ijms22094307. [PMID: 33919163 PMCID: PMC8122486 DOI: 10.3390/ijms22094307] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/13/2021] [Accepted: 04/17/2021] [Indexed: 12/14/2022] Open
Abstract
CaMKII and CaMKIV are calcium/calmodulin-dependent kinases playing a rudimentary role in many regulatory processes in the organism. These kinases attract increasing interest due to their involvement primarily in memory and plasticity and various cellular functions. Although CaMKII and CaMKIV are mostly recognized as the important cogs in a memory machine, little is known about their effect on mood and role in neuropsychiatric diseases etiology. Here, we aimed to review the structure and functions of CaMKII and CaMKIV, as well as how these kinases modulate the animals’ behavior to promote antidepressant-like, anxiolytic-like, and procognitive effects. The review will help in the understanding of the roles of the above kinases in the selected neurodegenerative and neuropsychiatric disorders, and this knowledge can be used in future drug design.
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20
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Son DB, Choi W, Kim M, Go EJ, Jeong D, Park CK, Kim YH, Lee H, Suh JW. Decursin Alleviates Mechanical Allodynia in a Paclitaxel-Induced Neuropathic Pain Mouse Model. Cells 2021; 10:cells10030547. [PMID: 33806325 PMCID: PMC8001788 DOI: 10.3390/cells10030547] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 12/17/2022] Open
Abstract
Chemotherapy-induced neuropathic pain (CINP) is a severe adverse effect of platinum- and taxane-derived anticancer drugs. The pathophysiology of CINP includes damage to neuronal networks and dysregulation of signal transduction due to abnormal Ca2+ levels. Therefore, methods that aid the recovery of neuronal networks could represent a potential treatment for CINP. We developed a mouse model of paclitaxel-induced peripheral neuropathy, representing CINP, to examine whether intrathecal injection of decursin could be effective in treating CINP. We found that decursin reduced capsaicin-induced intracellular Ca2+ levels in F11 cells and stimulated neurite outgrowth in a concentration-dependent manner. Decursin directly reduced mechanical allodynia, and this improvement was even greater with a higher frequency of injections. Subsequently, we investigated whether decursin interacts with the transient receptor potential vanilloid 1 (TRPV1). The web server SwissTargetPrediction predicted that TRPV1 is one of the target proteins that may enable the effective treatment of CINP. Furthermore, we discovered that decursin acts as a TRPV1 antagonist. Therefore, we demonstrated that decursin may be an important compound for the treatment of paclitaxel-induced neuropathic pain that functions via TRPV1 inhibition and recovery of damaged neuronal networks.
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Affiliation(s)
- Dang Bao Son
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Woosik Choi
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Mingu Kim
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
| | - Eun Jin Go
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
| | - Dabeen Jeong
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
| | - Yong Ho Kim
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon 21999, Korea; (M.K.); (E.J.G.); (C.-K.P.)
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
| | - Hanki Lee
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
| | - Joo-Won Suh
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin 17058, Korea; (D.B.S.); (W.C.); (D.J.)
- Correspondence: (Y.H.K.); (H.L.); (J.-W.S.); Tel.: +82-32-899-6115 (Y.H.K.); +82-31-330-6799 (H.L.); +82-31-330-6881 (J.-W.S.)
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21
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Lässig F, Klann A, Bekeschus S, Lendeckel U, Wolke C. Expression of canonical transient receptor potential channels in U-2 OS and MNNG-HOS osteosarcoma cell lines. Oncol Lett 2021; 21:307. [PMID: 33732383 DOI: 10.3892/ol.2021.12568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/04/2021] [Indexed: 11/06/2022] Open
Abstract
In U-2 OS and MNNG-HOS osteosarcoma cells, small interfering RNA-mediated knockdown of the angiotensin-(1-7) receptor, Mas, increases cell proliferation. Whether alterations in canonical transient receptor potential channels (TRPC) expression contribute to this effect is not clear. In the present study, a basic description of TRPC subtype expression in osteosarcoma cell lines was provided. The pharmacological modulators of the angiotensin-(1-7) receptor, Mas, AVE0991 (agonist), or D-Ala7-Ang-(1-7) (antagonist) were applied to elucidate a possible role of Mas in the regulation of TRPC mRNA levels. The contribution of other G-protein coupled receptors (GPCR) or receptor tyrosine kinases to TRCP expression was studied by applying the selective pharmacological blockers of either PI3 kinase or MEK/Erk1/2 signaling, Ly294002 and PD98059. AVE0991 and D-Ala7-Ang-(1-7) exhibited no or marginal effects on TRPC mRNA expression. Ly294002 provoked a 9.6- and 5.9-fold increase in the amounts of TRPC5 mRNA in MNNG-HOS and U-2 OS cells, respectively. Additionally, Ly294002 increased TRPC6 mRNA levels; however, it had no effect on TRPCs 1, 3 and 4. Administration of PD98059 increased the amounts of TRPC6 and TRPC4 ~2-fold. In conclusion, the present study demonstrated that Mas-dependent alterations in osteosarcoma cell line proliferation were not mediated by any changes in TRPC subtype gene expression. The data shows in principle, and consistent with the literature, that the signaling pathways examined can regulate the expression of TRPCs at the mRNA level. Therefore, direct and signaling pathway-specific pharmacological targeting of TRPC subtypes may represent an option for improving the treatment of osteosarcoma.
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Affiliation(s)
- Florian Lässig
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Anja Klann
- Institute of Forensic Medicine, University Medicine Greifswald, D-17489 Greifswald, Germany
| | - Sander Bekeschus
- Zentrum für Innovationskompetenz (ZIK) plasmatis, Leibniz Institute for Plasma Science and Technology (INP), D-17489 Greifswald, Germany
| | - Uwe Lendeckel
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, D-17475 Greifswald, Germany
| | - Carmen Wolke
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, D-17475 Greifswald, Germany
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22
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Friedland K, Silani G, Schuwald A, Stockburger C, Koch E, Nöldner M, Müller WE. Neurotrophic Properties of Silexan, an Essential Oil from the Flowers of Lavender-Preclinical Evidence for Antidepressant-Like Properties. PHARMACOPSYCHIATRY 2020; 54:37-46. [PMID: 33254260 DOI: 10.1055/a-1293-8585] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Silexan, a special essential oil from flowering tops of lavandula angustifolia, is used to treat subsyndromal anxiety disorders. In a recent clinical trial, Silexan also showed antidepressant effects in patients suffering from mixed anxiety-depression (ICD-10 F41.2). Since preclinical data explaining antidepressant properties of Silexan are missing, we decided to investigate if Silexan also shows antidepressant-like effects in vitro as well as in vivo models. METHODS We used the forced swimming test (FST) in rats as a simple behavioral test indicative of antidepressant activity in vivo. As environmental events and other risk factors contribute to depression through converging molecular and cellular mechanisms that disrupt neuronal function and morphology-resulting in dysfunction of the circuitry that is essential for mood regulation and cognitive function-we investigated the neurotrophic properties of Silexan in neuronal cell lines and primary hippocampal neurons. RESULTS The antidepressant activity of Silexan (30 mg/kg BW) in the FST was comparable to the tricyclic antidepressant imipramine (20 mg/kg BW) after 9-day treatment. Silexan triggered neurite outgrowth and synaptogenesis in 2 different neuronal cell models and led to a significant increase in synaptogenesis in primary hippocampal neurons. Silexan led to a significant phosphorylation of protein kinase A and subsequent CREB phosphorylation. CONCLUSION Taken together, Silexan demonstrates antidepressant-like effects in cellular as well as animal models for antidepressant activity. Therefore, our data provides preclinical evidence for the clinical antidepressant effects of Silexan in patients with mixed depression and anxiety.
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Affiliation(s)
- Kristina Friedland
- Pharmacology and Toxicology, Institute for Pharmacy and Biomedical Sciences, Johannes Gutenberg-University Mainz, Germany
| | - Giacomo Silani
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
| | - Anita Schuwald
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
| | - Carola Stockburger
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
| | - Egon Koch
- Preclinical Research, Dr. Willmar Schwabe Pharmaceuticals, Karlsruhe, Germany
| | - Michael Nöldner
- Preclinical Research, Dr. Willmar Schwabe Pharmaceuticals, Karlsruhe, Germany
| | - Walter E Müller
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
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23
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Zeitler S, Schumacher F, Monti J, Anni D, Guhathakurta D, Kleuser B, Friedland K, Fejtová A, Kornhuber J, Rhein C. Acid Sphingomyelinase Impacts Canonical Transient Receptor Potential Channels 6 (TRPC6) Activity in Primary Neuronal Systems. Cells 2020; 9:E2502. [PMID: 33218173 PMCID: PMC7698877 DOI: 10.3390/cells9112502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/16/2020] [Accepted: 11/13/2020] [Indexed: 12/30/2022] Open
Abstract
: The acid sphingomyelinase (ASM)/ceramide system exhibits a crucial role in the pathology of major depressive disorder (MDD). ASM hydrolyzes the abundant membrane lipid sphingomyelin to ceramide that regulates the clustering of membrane proteins via microdomain and lipid raft organization. Several commonly used antidepressants, such as fluoxetine, rely on the functional inhibition of ASM in terms of their antidepressive pharmacological effects. Transient receptor potential canonical 6 (TRPC6) ion channels are located in the plasma membrane of neurons and serve as receptors for hyperforin, a phytochemical constituent of the antidepressive herbal remedy St. John's wort. TRPC6 channels are involved in the regulation of neuronal plasticity, which likely contributes to their antidepressant effect. In this work, we investigated the impact of reduced ASM activity on the TRPC6 function in neurons. A lipidomic analysis of cortical brain tissue of ASM deficient mice revealed a decrease in ceramide/sphingomyelin molar ratio and an increase in sphingosine. In neurons with ASM deletion, hyperforin-mediated Ca2+-influx via TRPC6 was decreased. Consequently, downstream activation of nuclear phospho-cAMP response element-binding protein (pCREB) was changed, a transcriptional factor involved in neuronal plasticity. Our study underlines the importance of balanced ASM activity, as well as sphingolipidome composition for optimal TRPC6 function. A better understanding of the interaction of the ASM/ceramide and TRPC6 systems could help to draw conclusions about the pathology of MDD.
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Affiliation(s)
- Stefanie Zeitler
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Fabian Schumacher
- Department of Toxicology, University of Potsdam, 14558 Nuthetal, Germany;
- Department of Pharmacology & Toxicology, Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany;
- Institute of Molecular Biology, University of Duisburg-Essen, 45147 Essen, Germany
| | - Juliana Monti
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Daniela Anni
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Debarpan Guhathakurta
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Burkhard Kleuser
- Department of Pharmacology & Toxicology, Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany;
| | - Kristina Friedland
- Institute for Pharmacy and Biochemistry, Johannes-Gutenberg Universität Mainz, 55128 Mainz, Germany;
| | - Anna Fejtová
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Cosima Rhein
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
- Department of Psychosomatic Medicine and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
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24
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Lavanderos B, Silva I, Cruz P, Orellana-Serradell O, Saldías MP, Cerda O. TRP Channels Regulation of Rho GTPases in Brain Context and Diseases. Front Cell Dev Biol 2020; 8:582975. [PMID: 33240883 PMCID: PMC7683514 DOI: 10.3389/fcell.2020.582975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
Neurological and neuropsychiatric disorders are mediated by several pathophysiological mechanisms, including developmental and degenerative abnormalities caused primarily by disturbances in cell migration, structural plasticity of the synapse, and blood-vessel barrier function. In this context, critical pathways involved in the pathogenesis of these diseases are related to structural, scaffolding, and enzymatic activity-bearing proteins, which participate in Ca2+- and Ras Homologs (Rho) GTPases-mediated signaling. Rho GTPases are GDP/GTP binding proteins that regulate the cytoskeletal structure, cellular protrusion, and migration. These proteins cycle between GTP-bound (active) and GDP-bound (inactive) states due to their intrinsic GTPase activity and their dynamic regulation by GEFs, GAPs, and GDIs. One of the most important upstream inputs that modulate Rho GTPases activity is Ca2+ signaling, positioning ion channels as pivotal molecular entities for Rho GTPases regulation. Multiple non-selective cationic channels belonging to the Transient Receptor Potential (TRP) family participate in cytoskeletal-dependent processes through Ca2+-mediated modulation of Rho GTPases. Moreover, these ion channels have a role in several neuropathological events such as neuronal cell death, brain tumor progression and strokes. Although Rho GTPases-dependent pathways have been extensively studied, how they converge with TRP channels in the development or progression of neuropathologies is poorly understood. Herein, we review recent evidence and insights that link TRP channels activity to downstream Rho GTPase signaling or modulation. Moreover, using the TRIP database, we establish associations between possible mediators of Rho GTPase signaling with TRP ion channels. As such, we propose mechanisms that might explain the TRP-dependent modulation of Rho GTPases as possible pathways participating in the emergence or maintenance of neuropathological conditions.
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Affiliation(s)
- Boris Lavanderos
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
| | - Ian Silva
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
| | - Pablo Cruz
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
| | - Octavio Orellana-Serradell
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
| | - María Paz Saldías
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
| | - Oscar Cerda
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile.,The Wound Repair, Treatment and Health (WoRTH) Initiative, Santiago, Chile
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25
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Müller WE, Sillani G, Schuwald A, Friedland K. Pharmacological basis of the anxiolytic and antidepressant properties of Silexan®, an essential oil from the flowers of lavender. Neurochem Int 2020; 143:104899. [PMID: 33181239 DOI: 10.1016/j.neuint.2020.104899] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/23/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023]
Abstract
Silexan®, a proprietary essential oil manufactured by steam distillation from Lavandula angustifolia flowers showed pronounced anxiolytic effects in patients with subthreshold anxiety disorders and was also efficacious in patients with Generalized Anxiety disorder (GAD). Moreover, evidences for antidepressant-like properties of Silexan® have been observed in anxious patients suffering from comorbid depressive symptoms and in patients with mixed anxiety-depression disorder (ICD-10 F41.2). In accordance with the clinical data Silexan® is active in several behavioral models in rodents at rather low concentrations indicating potent anxiolytic and antidepressive properties. As possible mechanism of action a moderate inhibition of voltage dependent calcium channels (VDCC) has been found showing some similarities to the anxiolytic drug pregabalin. However, while pregabalin mainly inhibits P/Q-type channels by binding to a modulatory subunit, Silexan® moderately inhibits mainly T-type and N-type channels and to some extent P/Q-type channels. Unlike pregabalin Silexan® is free of hypnotic or sedative side effects and seems to be devoid of any abuse potential. With respect to its specific antidepressant like properties Silexan® improves several aspects of neuroplasticity which seems to be the common final pathway of all antidepressant drugs. As a potential mechanism of its effects on neuroplasticity an activation of the transcription factor CREB via activation of intracellular signaling kinases like PKA and MAPK has been found. Since the concentrations of Silexan® needed to inhibit VDCC function and to improve neuroplasticity are quite similar, the effects of Silexan® on PKA or MAPK could constitute a common intracellular signaling cascade leading to VDCC modulation as well as CREB activation and improved neuroplasticity.
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Affiliation(s)
- Walter E Müller
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany.
| | - Giacomo Sillani
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
| | - Anita Schuwald
- Department of Pharmacology, Biocenter, Goethe-University Frankfurt, Germany
| | - Kristina Friedland
- Pharmacology and Toxicology, Institute for Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, Germany
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26
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Pharmacological and genetic inhibition of TRPC6-induced gene transcription. Eur J Pharmacol 2020; 886:173357. [PMID: 32758574 DOI: 10.1016/j.ejphar.2020.173357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/04/2020] [Accepted: 07/08/2020] [Indexed: 11/20/2022]
Abstract
Transient receptor potential canonical-6 (TRPC6) channels are non-selective cation channels that can be activated by hyperforin, a constituent of Hypericum perforatum. TRPC6 activation has been linked to a variety of biological functions and pathologies, including focal segmental glomerulosclerosis and the development of various tumor entities. Thus, TRPC6 is an interesting drug target, and a specific pharmacological inhibitor would be very valuable for both basic research and therapy of TRPC6-mediated human pathologies. Here, we assessed the biological activity of various TRP channel inhibitors on hyperforin-stimulated TRPC6 channel signaling. Hyperforin stimulates the activity of the transcription factor AP-1 via TRPC6. Expression experiments involving a TRPC6-specific small hairpin RNA confirmed that hyperforin-induced gene transcription requires TRPC6. Cellular AP-1 activity was measured to assess which compound interrupted the TRPC6-induced intracellular signaling cascade. The results show that the compounds 2-APB, clotrimazole, BCTC, TC-I 2014, SAR 7334, and larixyl acetate blocked TRPC6-mediated activation of AP-1. In contrast, the TRPM8-specific inhibitor RQ-00203078 did not inhibit TRPC6-mediated signaling. 2-APB, clotrimazole, BCTC, and TC-I 2014 are broad-spectrum Ca2+ channel inhibitors, while SAR 7334 and larixyl acetate have been proposed to function as rather TRPC6-specific inhibitors. In this study it is shown that both compounds, in addition to inhibiting TRPC6-induced signaling, completely abolished pregnenolone sulfate-mediated signaling via TRPM3 channels. Thus, SAR 7334 and larixyl acetate are not TRPC6-specific inhibitors.
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27
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Formoso K, Susperreguy S, Freichel M, Birnbaumer L. RNA-seq analysis reveals TRPC genes to impact an unexpected number of metabolic and regulatory pathways. Sci Rep 2020; 10:7227. [PMID: 32350291 PMCID: PMC7190874 DOI: 10.1038/s41598-020-61177-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/21/2020] [Indexed: 12/12/2022] Open
Abstract
The seven-member transient receptor potential canonical genes (TRPC1-7) encode cation channels linked to several human diseases. There is little understanding of the participation of each TRPC in each pathology, considering functional redundancy. Also, most of the inhibitors available are not specific. Thus, we developed mice that lack all of the TRPCs and performed a transcriptome analysis in eight tissues. The aim of this research was to address the impact of the absence of all TRPC channels on gene expression. We obtained a total of 4305 differentially expressed genes (DEGs) in at least one tissue where spleen showed the highest number of DEGs (1371). Just 21 genes were modified in all the tissues. Performing a pathway enrichment analysis, we found that many important signaling pathways were modified in more than one tissue, including PI3K (phosphatidylinositol 3-kinase/protein kinase-B) signaling pathway, cytokine-cytokine receptor interaction, extracellular matrix (ECM)-receptor interaction and circadian rhythms. We describe for the first time the changes at the transcriptome level due to the lack of all TRPC proteins in a mouse model and provide a starting point to understand the function of TRPC channels and their possible roles in pathologies.
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Affiliation(s)
- Karina Formoso
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina
| | - Sebastian Susperreguy
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina
| | - Marc Freichel
- Institute of Physiology and Pathophysiology, Heidelberg University, 69120, Heidelberg, Germany
| | - Lutz Birnbaumer
- Institute for Biomedical Research (BIOMED UCA-CONICET). School of Medical Sciences, Catholic University of Argentina (UCA), Buenos Aires, C1107AFF, Argentina. .,Neurobiology Laboratory, National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, North Carolina, 27709, USA.
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28
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Liu L, Gu L, Chen M, Zheng Y, Xiong X, Zhu S. Novel Targets for Stroke Therapy: Special Focus on TRPC Channels and TRPC6. Front Aging Neurosci 2020; 12:70. [PMID: 32256338 PMCID: PMC7093711 DOI: 10.3389/fnagi.2020.00070] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/26/2020] [Indexed: 12/14/2022] Open
Abstract
Stroke remains a leading cause of death, disability, and medical care burden worldwide. However, transformation from laboratory findings toward effective pharmacological interventions for clinical stroke has been unsatisfactory. Novel evidence has been gained on the underlying mechanisms and therapeutic potential related to the transient receptor potential (TRP) channels in several disorders. The TRP superfamily consists of a diverse group of Ca2+ permeable non-selective cation channels. In particular, the members of TRP subfamilies, TRP canonical (TRPC) channels and TRPC6, have been found in different cell types in the whole body and have high levels of expression in the central nervous system (CNS). Notably, the TRPCs and TRPC6 channel have been implicated in neurite outgrowth and neuronal survival during normal development and in a range of CNS pathological conditions. Recent studies have shown that suppression of TRPC6 channel degradation prevents ischemic neuronal cell death in experimental stroke. Accumulating evidence supports the important functions of TRPC6 in brain ischemia. We have highlighted some crucial advancement that points toward an important involvement of TRPCs and TRPC6 in ischemic stroke. This review will make an overview of the TRP and TRPC channels due to their roles as targets for clinical trials and CNS disorders. Besides, the primary goal is to discuss and update the critical role of TRPC6 channels in stroke and provide a promising target for stroke prevention and therapy.
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Affiliation(s)
- Lu Liu
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lijuan Gu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Manli Chen
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yueying Zheng
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaoxing Xiong
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.,Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Shengmei Zhu
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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29
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Popugaeva E, Bezprozvanny I, Chernyuk D. Reversal of Calcium Dysregulation as Potential Approach for Treating Alzheimer's Disease. Curr Alzheimer Res 2020; 17:344-354. [PMID: 32469698 PMCID: PMC8210816 DOI: 10.2174/1567205017666200528162046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 02/25/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
Despite decades of research and effort, there is still no effective disease-modifying treatment for Alzheimer's Disease (AD). Most of the recent AD clinical trials were targeting amyloid pathway, but all these trials failed. Although amyloid pathology is a hallmark and defining feature of AD, targeting the amyloid pathway has been very challenging due to low efficacy and serious side effects. Alternative approaches or mechanisms for our understanding of the major cause of memory loss in AD need to be considered as potential therapeutic targets. Increasing studies suggest that Ca2+ dysregulation in AD plays an important role in AD pathology and is associated with other AD abnormalities, such as excessive inflammation, increased ROS, impaired autophagy, neurodegeneration, synapse, and cognitive dysfunction. Ca2+ dysregulation in cytosolic space, Endoplasmic Reticulum (ER) and mitochondria have been reported in the context of various AD models. Drugs or strategies, to correct the Ca2+ dysregulation in AD, have been demonstrated to be promising as an approach for the treatment of AD in preclinical models. This review will discuss the mechanisms of Ca2+ dysregulation in AD and associated pathology and discuss potential approaches or strategies to develop novel drugs for the treatment of AD by targeting Ca2+ dysregulation.
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Affiliation(s)
- Elena Popugaeva
- Department of Medical Physics, Laboratory of Molecular Neurodegeneration, Peter the Great St Petersburg Polytechnic University, St Petersburg, Russia
| | - Ilya Bezprozvanny
- Department of Physiology, UT Southwestern Medical Center, Dallas, USA
| | - Daria Chernyuk
- Department of Medical Physics, Laboratory of Molecular Neurodegeneration, Peter the Great St Petersburg Polytechnic University, St Petersburg, Russia
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TRPC6-Mediated ERK1/2 Activation Increases Dentate Granule Cell Resistance to Status Epilepticus Via Regulating Lon Protease-1 Expression and Mitochondrial Dynamics. Cells 2019; 8:cells8111376. [PMID: 31683954 PMCID: PMC6912337 DOI: 10.3390/cells8111376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/21/2019] [Accepted: 10/30/2019] [Indexed: 12/28/2022] Open
Abstract
Transient receptor potential canonical channel-6 (TRPC6) is one of the Ca2+-permeable non-selective cation channels. TRPC6 is mainly expressed in dentate granule cell (DGC), which is one of the most resistant neuronal populations to various harmful stresses. Although TRPC6 knockdown evokes the massive DGC degeneration induced by status epilepticus (a prolonged seizure activity, SE), the molecular mechanisms underlying the role of TRPC6 in DGC viability in response to SE are still unclear. In the present study, hyperforin (a TRPC6 activator) facilitated mitochondrial fission in DGC concomitant with increases in Lon protease-1 (LONP1, a mitochondrial protease) expression and extracellular-signal-regulated kinase 1/2 (ERK1/2) phosphorylation under physiological conditions, which were abrogated by U0126 (an ERK1/2 inhibitor) co-treatment. TRPC6 knockdown showed the opposite effects on LONP1 expression, ERK1/2 activity, and mitochondrial dynamics. In addition, TRPC6 siRNA and U0126 evoked the massive DGC degeneration accompanied by mitochondrial elongation following SE, independent of seizure severity. However, LONP1 siRNA exacerbated SE-induced DGC death without affecting mitochondrial length. These findings indicate that TRPC6-ERK1/2 activation may increase DGC invulnerability to SE by regulating LONP1 expression as well as mitochondrial dynamics. Therefore, TRPC6-ERK1/2-LONP1 signaling pathway will be an interesting and important therapeutic target for neuroprotection from various neurological diseases.
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Zeitler S, Ye L, Andreyeva A, Schumacher F, Monti J, Nürnberg B, Nowak G, Kleuser B, Reichel M, Fejtová A, Kornhuber J, Rhein C, Friedland K. Acid sphingomyelinase - a regulator of canonical transient receptor potential channel 6 (TRPC6) activity. J Neurochem 2019; 150:678-690. [PMID: 31310676 DOI: 10.1111/jnc.14823] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 07/02/2019] [Accepted: 07/04/2019] [Indexed: 12/28/2022]
Abstract
Recent investigations propose the acid sphingomyelinase (ASM)/ceramide system as a novel target for antidepressant action. ASM catalyzes the breakdown of the abundant membrane lipid sphingomyelin to the lipid messenger ceramide. This ASM-induced lipid modification induces a local shift in membrane properties, which influences receptor clustering and downstream signaling. Canonical transient receptor potential channels 6 (TRPC6) are non-selective cation channels located in the cell membrane that play an important role in dendritic growth, synaptic plasticity and cognition in the brain. They can be activated by hyperforin, an ingredient of the herbal remedy St. John's wort for treatment of depression disorders. Because of their role in the context of major depression, we investigated the crosstalk between the ASM/ceramide system and TRPC6 ion channels in a pheochromocytoma cell line 12 neuronal cell model (PC12 rat pheochromocytoma cell line). Ca2+ imaging experiments indicated that hyperforin-induced Ca2+ influx through TRPC6 channels is modulated by ASM activity. While antidepressants, known as functional inhibitors of ASM activity, reduced TRPC6-mediated Ca2+ influx, extracellular application of bacterial sphingomyelinase rebalanced TRPC6 activity in a concentration-related way. This effect was confirmed in whole-cell patch clamp electrophysiology recordings. Lipidomic analyses revealed a decrease in very long chain ceramide/sphingomyelin molar ratio after ASM inhibition, which was connected with changes in the abundance of TRPC6 channels in flotillin-1-positive lipid rafts as visualized by western blotting. Our data provide evidence that the ASM/ceramide system regulates TRPC6 channels likely by controlling their recruitment to specific lipid subdomains and thereby fine-tuning their physical properties.
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Affiliation(s)
- Stefanie Zeitler
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lian Ye
- Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Aksana Andreyeva
- Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Fabian Schumacher
- Department of Toxicology, Faculty of Mathematics and Natural Science, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany.,Department of Molecular Biology, University Clinic, University of Duisburg-Essen, Essen, Germany
| | - Juliana Monti
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Bernd Nürnberg
- Department of Pharmacology and Experimental Therapy, Institute of Experimental and Clinical Pharmacology and Toxicology, Eberhard Karls University Hospitals and Clinics and Interfaculty Center of Pharmacogenomics and Drug Research (ICePhA), Tübingen, Germany
| | - Gabriel Nowak
- Department of Pharmacobiology, Jagiellonian University Medical College, Kraków, Poland.,Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Burkhard Kleuser
- Department of Toxicology, Faculty of Mathematics and Natural Science, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Martin Reichel
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Anna Fejtová
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Cosima Rhein
- Department of Psychiatry and Psychotherapy, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Kristina Friedland
- Department of Chemistry and Pharmacy, Molecular and Clinical Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Institute for Pharmacy and Biochemistry, Pharmacology and Toxicology, Johannes-Gutenberg University Mainz, Mainz, Germany
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Antidepressant-like activity of hyperforin and changes in BDNF and zinc levels in mice exposed to chronic unpredictable mild stress. Behav Brain Res 2019; 372:112045. [PMID: 31220487 DOI: 10.1016/j.bbr.2019.112045] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/14/2019] [Accepted: 06/16/2019] [Indexed: 12/27/2022]
Abstract
Chronic unpredictable mild stress (CUMS) - a rodent model of depression mimics a variety of neurochemical and behavioral alterations similar to those seen in human depression. This study evaluated the antidepressant activity of hyperforin in the CUMS model using fluoxetine (FLX) as a reference drug. The antidepressant-like effects of hyperforin and FLX were evaluated in the tail suspension test (TST), forced swim test (FST), and splash test (SPT). CUMS induced an increase in immobility time in mice (pro-depressive effects) in the FST and TST. CUMS-induced changes were reversed by chronic treatment with hyperforin (2.5 and 5 mg/kg), as well as FLX (10 mg/kg). SPT results revealed a decrease in the frequency and duration of grooming in stressed mice. These effects were normalized by hyperforin (5 mg/kg) and FLX treatment. Hyperforin (2.5 mg/kg) only reversed the CUMS-induced deficits related to the frequency of grooming. CUMS also caused a decrease in zinc concentration in the frontal cortex (FC) and hippocampus (Hp) of mice; hyperforin (2.5 mg/kg) increased zinc concentration in the Hp of control rats. CUMS also induced a decrease in BDNF protein levels in the FC and Hp, while decreasing the pCREB/CREB ratio only in the Hp. Hyperforin (2.5 and 5 mg/kg) reversed the CUMS-induced reduction of BDNF only in the Hp. Our results demonstrate the antidepressant-like activity of hyperforin in the CUMS model in mice and the possible involvement of hippocampal BDNF/zinc alterations in this activity.
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Pochwat B, Szewczyk B, Kotarska K, Rafało-Ulińska A, Siwiec M, Sowa JE, Tokarski K, Siwek A, Bouron A, Friedland K, Nowak G. Hyperforin Potentiates Antidepressant-Like Activity of Lanicemine in Mice. Front Mol Neurosci 2018; 11:456. [PMID: 30618608 PMCID: PMC6299069 DOI: 10.3389/fnmol.2018.00456] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/26/2018] [Indexed: 12/24/2022] Open
Abstract
N-methyl-D-aspartate receptor (NMDAR) modulators induce rapid and sustained antidepressant like-activity in rodents through a molecular mechanism of action that involves the activation of Ca2+ dependent signaling pathways. Moreover, ketamine, a global NMDAR antagonist is a potent, novel, and atypical drug that has been successfully used to treat major depressive disorder (MDD). However, because ketamine evokes unwanted side effects, alternative strategies have been developed for the treatment of depression. The objective of the present study was to determine the antidepressant effects of either a single dose of hyperforin or lanicemine vs. their combined effects in mice. Hyperforin modulates intracellular Ca2+ levels by activating Ca2+-conducting non-selective canonical transient receptor potential 6 channel (TRPC6) channels. Lanicemine, on the other hand, blocks NMDARs and regulates Ca2+ dependent processes. To evaluate the antidepressant-like activity of hyperforin and lanicemine, a set of in vivo (behavioral) and in vitro methods (western blotting, Ca2+ imaging studies, electrophysiological, and radioligand binding assays) was employed. Combined administration of hyperforin and lanicemine evoked long-lasting antidepressant-like effects in both naïve and chronic corticosterone-treated mice while also enhancing the expression of the synapsin I, GluA1 subunit, and brain derived neurotrophic factor (BDNF) proteins in the frontal cortex. In Ca2+ imaging studies, lanicemine enhanced Ca2+ influx induced by hyperforin. Moreover, compound such as MK-2206 (Akt kinase inhibitor) inhibited the antidepressant-like activity of hyperforin in the tail suspension test (TST). Hyperforin reversed disturbances induced by MK-801 in the novel object recognition (NOR) test and had no effects on NMDA currents and binding to NMDAR. Our results suggest that co-administration of hyperforin and lanicemine induces long-lasting antidepressant effects in mice and that both substances may have different molecular targets.
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Affiliation(s)
- Bartłomiej Pochwat
- Laboratory of Neurobiology of Trace Elements, Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Bernadeta Szewczyk
- Laboratory of Neurobiology of Trace Elements, Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Katarzyna Kotarska
- Laboratory of Neurobiology of Trace Elements, Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Anna Rafało-Ulińska
- Laboratory of Neurobiology of Trace Elements, Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Marcin Siwiec
- Department of Physiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Joanna E Sowa
- Department of Physiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Krzysztof Tokarski
- Department of Physiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Agata Siwek
- Department of Pharmacobiology, Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - Alexandre Bouron
- Université Grenoble Alpes, CNRS, CEA, BIG-LCBM, Grenoble, France
| | - Kristina Friedland
- Pharmacology and Toxicology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Gabriel Nowak
- Laboratory of Neurobiology of Trace Elements, Department of Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.,Department of Pharmacobiology, Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
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Popugaeva E, Pchitskaya E, Bezprozvanny I. Dysregulation of Intracellular Calcium Signaling in Alzheimer's Disease. Antioxid Redox Signal 2018; 29:1176-1188. [PMID: 29890840 PMCID: PMC6157344 DOI: 10.1089/ars.2018.7506] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Calcium (Ca2+) hypothesis of Alzheimer's disease (AD) gains popularity. It points to new signaling pathways that may underlie AD pathogenesis. Based on calcium hypothesis, novel targets for the development of potential AD therapies are identified. Recent Advances: Recently, the key role of neuronal store-operated calcium entry (nSOCE) in the development of AD has been described. Correct regulation of nSOCE is necessary for the stability of postsynaptic contacts to preserve the memory formation. Molecular identity of hippocampal nSOCE is defined. Perspective nSOCE-activating molecule, prototype of future anti-AD drugs, is described. CRITICAL ISSUES Endoplasmic reticulum Ca2+ overload happens in many but not in all AD models. The nSOCE targeting therapy described in this review may not be universally applicable. FUTURE DIRECTIONS There is a need to determine whether AD is a syndrome with one critical signaling pathway that initiates pathology, or it is a disorder with many different signaling pathways that are disrupted simultaneously or one after each other. It is necessary to validate applicability of nSOCE-activating therapy for the development of anti-AD medication. There is an experimental correlation between downregulated nSOCE and disrupted postsynaptic contacts in AD mouse models. Signaling mechanisms downstream of nSOCE which are responsible for the regulation of stability of postsynaptic contacts have to be discovered. That will bring new targets for the development of AD-preventing therapies. Antioxid. Redox Signal. 29, 1176-1188.
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Affiliation(s)
- Elena Popugaeva
- 1 Laboratory of Molecular Neurodegeneration, Department of Medical Physics, Peter the Great St.Petersburg Polytechnic University , St.Petersburg, Russian Federation
| | - Ekaterina Pchitskaya
- 1 Laboratory of Molecular Neurodegeneration, Department of Medical Physics, Peter the Great St.Petersburg Polytechnic University , St.Petersburg, Russian Federation
| | - Ilya Bezprozvanny
- 1 Laboratory of Molecular Neurodegeneration, Department of Medical Physics, Peter the Great St.Petersburg Polytechnic University , St.Petersburg, Russian Federation.,2 Department of Physiology, UT Southwestern Medical Center at Dallas , Dallas, Texas
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Schulz C, Fritz N, Sommer T, Krofta K, Friedland K, Pischetsrieder M. Activation of membrane-located Ca2+ channels by hop beta acids and their tricyclic transformation products. Food Chem 2018; 252:215-227. [DOI: 10.1016/j.foodchem.2018.01.073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/11/2017] [Accepted: 01/09/2018] [Indexed: 12/23/2022]
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Yang XW, Grossman RB, Xu G. Research Progress of Polycyclic Polyprenylated Acylphloroglucinols. Chem Rev 2018; 118:3508-3558. [PMID: 29461053 DOI: 10.1021/acs.chemrev.7b00551] [Citation(s) in RCA: 249] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polycyclic polyprenylated acylphloroglucinols (PPAPs) are a class of hybrid natural products sharing the mevalonate/methylerythritol phosphate and polyketide biosynthetic pathways and showing considerable structure and bioactivity diversity. This review discusses the progress of research into the chemistry and biological activity of 421 natural PPAPs in the past 11 years as well as in-depth studies of biological activities and total synthesis of some PPAPs isolated before 2006. We created an online database of all PPAPs known to date at http://www.chem.uky.edu/research/grossman/PPAPs . Two subclasses of biosynthetically related metabolites, spirocyclic PPAPs with octahydrospiro[cyclohexan-1,5'-indene]-2,4,6-trione core and complicated PPAPs produced by intramolecular [4 + 2] cycloadditions of MPAPs, are brought into the PPAP family. Some PPAPs' relative or absolute configurations are reassigned or critically discussed, and the confusing trivial names in PPAPs investigations are clarified. Pharmacologic studies have revealed a new molecular mechanism whereby hyperforin and its derivatives regulate neurotransmitter levels by activating TRPC6 as well as the antitumor mechanism of garcinol and its analogues. The antineoplastic potential of some type B PPAPs such as oblongifolin C and guttiferone K has increased significantly. As a result of the recent appearances of innovative synthetic methods and strategies, the total syntheses of 22 natural PPAPs including hyperforin, garcinol, and plukenetione A have been accomplished.
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Affiliation(s)
- Xing-Wei Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
| | - Robert B Grossman
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506-0055 , United States
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
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Kim JE, Park JY, Kang TC. TRPC6-mediated ERK1/2 Activation Regulates Neuronal Excitability via Subcellular Kv4.3 Localization in the Rat Hippocampus. Front Cell Neurosci 2017; 11:413. [PMID: 29326557 PMCID: PMC5742353 DOI: 10.3389/fncel.2017.00413] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 12/11/2017] [Indexed: 01/02/2023] Open
Abstract
Recently, we have reported that transient receptor potential channel-6 (TRPC6) plays an important role in the regulation of neuronal excitability and synchronization of spiking activity in the dentate granule cells (DGC). However, the underlying mechanisms of TRPC6 in these phenomena have been still unclear. In the present study, we investigated the role of TRPC6 in subcellular localization of Kv4.3 and its relevance to neuronal excitability in the rat hippocampus. TRPC6 knockdown increased excitability and inhibitory transmission in the DGC and the CA1 neurons in response to a paired-pulse stimulus. However, TRPC6 knockdown impaired γ-aminobutyric acid (GABA)ergic inhibition in the hippocampus during and after high-frequency stimulation (HFS). TRPC6 knockdown reduced the Kv4.3 clusters in membrane fractions and its dendritic localization on DGC and GABAergic interneurons. TRPC6 knockdown also decreased extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation and the efficacy of 4-aminopyridine (4-AP) in neuronal excitability. An ERK1/2 inhibitor generated multiple population spikes in response to a paired-pulse stimulus, concomitant with reduced membrane Kv4.3 translocation. A TRPC6 activator (hyperforin) reversed the effects of TRPC knockdown, except paired-pulse inhibition. These findings provide valuable clues indicating that TRPC6-mediated ERK1/2 activation may regulate subcellular Kv4.3 localization in DGC and interneurons, which is cause-effect relationship between neuronal excitability and seizure susceptibility.
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Affiliation(s)
- Ji-Eun Kim
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Jin-Young Park
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, South Korea
| | - Tae-Cheon Kang
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, South Korea
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Wei L, Du Y, Jia L, Ma X, Chen Z, Lu J, Tian L, Duan Z, Dong F, Lv Z, Yao G, Fu R, Wang L. Therapeutic Effects of FK506 on IgA Nephropathy Rat. Kidney Blood Press Res 2017; 42:983-998. [PMID: 29179182 DOI: 10.1159/000485346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 11/16/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS FK506 is an immunosuppressive drug and a calcineurin inhibitor that has been widely used in kidney disease in recent years. FK506 shows a wide range of biological and pharmaceutical effects; however, the mechanism of its anti- proliferative effect has not been well elucidated. An IgA nephropathy (IgAN) model was used to generate a mesangial cell proliferation model. This study aims to examine the effect of FK506 on IgAN rats and the underlying mechanisms. METHODS Hematuria, proteinuria and renal function were measured. To observe the pathological conditions, we performed HE (hematoxylin - eosin) and PAS (periodic acid - schiff) staining. Transcription and protein expression levels were detected by qRT - PCR (quantitative real-time polymerase chain reaction) and Wb (western blotting). The location and semi-quantitative expression levels of TRPCs, CaN (Calcineurin) and α-SMA were examined by IHC (Immunohistochemical staining). RESULTS We found that FK506 could improve hematuria, proteinuria and renal function, especially in the HF (high-dose FK506) groups. Renal pathological changes were ameliorated in the treatment groups. FK506 could significantly decrease TRPCs, CaN, phosphorylation of ERK1/2 and α-SMA expression. CONCLUSION Taken together, these results suggest that the therapeutic effect of FK506 on IgAN might be partially associated with the down-regulated expression of TRPC channels, CaN and phosphorylation of ERK1/2.
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Affiliation(s)
- Linting Wei
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan Du
- Department of Nephrology, the First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Lining Jia
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaotao Ma
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhao Chen
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiamei Lu
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lifang Tian
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhaoyang Duan
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fengming Dong
- Department of Nephrology, Jiangsu Taizhou People's Hospital, Taizhou, China
| | - Zhian Lv
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ganglian Yao
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Rongguo Fu
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Li Wang
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Turning Death to Growth: Hematopoietic Growth Factors Promote Neurite Outgrowth through MEK/ERK/p53 Pathway. Mol Neurobiol 2017; 55:5913-5925. [PMID: 29119536 DOI: 10.1007/s12035-017-0814-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 10/27/2017] [Indexed: 12/23/2022]
Abstract
Stem cell factor (SCF) and granulocyte colony-stimulating factor (G-CSF) are the essential hematopoietic growth factors to control hematopoiesis. However, the role of SCF and G-CSF in the central nervous system remains poorly understood. Here, we have demonstrated the involvement of MEK/ERK/p53 signaling in SCF + G-CSF-enhanced neurite extension. Cortical neurons dissected from embryonic rat brains were seeded onto the membranes of transwell inserts, and neurite outgrowth was determined by using both the neurite outgrowth quantification assay kit and immunostaining of β III tubulin. Quantitative RT-PCR and western blotting were used for determining gene and protein expression of ERK and p53, respectively. p53 small interfering RNA (siRNAs) were introduced into neurons for examining the involvement of p53 in SCF + G-CSF-mediated neurite outgrowth. We observed that both SCF and G-CSF alone increased activation of MEK/ERK and gene expression of p53, while SCF + G-CSF synergistically activated the MEK/ERK signaling and upregulated p53 expression. MEK specific inhibitors (PD98059 and U0126) blocked the SCF + G-CSF-increased ERK phosphorylation and p53 gene and protein expression, and the MEK specific inhibitors also eliminated the SCF + G-CSF-promoted neurite outgrowth. p53 siRNAs knocked down the SCF + G-CSF-elevated p53 protein and prevented the SCF + G-CSF-enhanced neurite outgrowth. These findings suggest that activation of MEK/ERK/p53 signaling is required for SCF + G-CSF-promoted neurite outgrowth. Through the pro-apoptotic pathway of the MEK/ERK/p53, SCF + G-CSF turns neuronal fate from apoptotic commitment toward neural network generation. This observation provides novel insights into the putative role of SCF + G-CSF in supporting generation of neural connectivity during CNS development and in brain repair under pathological or neurodegenerative conditions.
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Thiel G, Lesch A, Rubil S, Backes TM, Rössler OG. Regulation of Gene Transcription Following Stimulation of Transient Receptor Potential (TRP) Channels. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 335:167-189. [PMID: 29305012 DOI: 10.1016/bs.ircmb.2017.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transient receptor potential (TRP) channels belong to a heterogeneous superfamily of cation channels that are involved in the regulation of numerous biological functions, including regulation of Ca2+ and glucose homeostasis, tumorigenesis, temperature, and pain sensation. To understand the functions of TRP channels, their associated intracellular signaling pathways and molecular targets have to be identified on the cellular level. Stimulation of TRP channels frequently induces an influx of Ca2+ ions into the cells and the subsequent activation of protein kinases. These intracellular signal transduction pathways ultimately induce changes in the gene expression pattern of the cells. Here, we review the effects of TRPC6, TRPM3, and TRPV1 channel stimulation on the activation of the stimulus-responsive transcription factors AP-1, CREB, Egr-1, Elk-1, and NFAT. Following activation, these transcription factors induce the transcription of delayed response genes. We propose that many biological functions of TRP channels can be explained by the activation of stimulus-responsive transcription factors and their delayed response genes. The proteins encoded by those delayed response genes may be responsible for the biochemical and physiological changes following TRP channel activation.
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Affiliation(s)
- Gerald Thiel
- Saarland University Medical Faculty, Homburg, Germany.
| | - Andrea Lesch
- Saarland University Medical Faculty, Homburg, Germany
| | - Sandra Rubil
- Saarland University Medical Faculty, Homburg, Germany
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Chaudhuri P, Rosenbaum MA, Birnbaumer L, Graham LM. Integration of TRPC6 and NADPH oxidase activation in lysophosphatidylcholine-induced TRPC5 externalization. Am J Physiol Cell Physiol 2017; 313:C541-C555. [PMID: 28835433 DOI: 10.1152/ajpcell.00028.2017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 11/22/2022]
Abstract
Lipid oxidation products, including lysophosphatidylcholine (lysoPC), activate canonical transient receptor potential 6 (TRPC6) channels, and the subsequent increase in intracellular Ca2+ leads to TRPC5 activation. The goal of this study is to elucidate the steps in the pathway between TRPC6 activation and TRPC5 externalization. Following TRPC6 activation by lysoPC, extracellular regulated kinase (ERK) is phosphorylated. This leads to phosphorylation of p47phox and subsequent NADPH oxidase activation with increased production of reactive oxygen species. ERK activation requires TRPC6 opening and influx of Ca2+ as evidenced by the failure of lysoPC to induce ERK phosphorylation in TRPC6-/- endothelial cells. ERK siRNA blocks the lysoPC-induced activation of NADPH oxidase, demonstrating that ERK activation is upstream of NADPH oxidase. The reactive oxygen species produced by NADPH oxidase promote myosin light chain kinase (MLCK) activation with phosphorylation of MLC and TRPC5 externalization. Downregulation of ERK, NADPH oxidase, or MLCK with the relevant siRNA prevents TRPC5 externalization. Blocking MLCK activation prevents the prolonged rise in intracellular calcium levels and preserves endothelial migration in the presence of lysoPC.
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Affiliation(s)
- Pinaki Chaudhuri
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - Michael A Rosenbaum
- Surgical Service, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, Ohio
| | - Lutz Birnbaumer
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina.,Institute of Biomedical Research (BIOMED), Catholic University of Argentina, Buenos Aires, Argentina; and
| | - Linda M Graham
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio; .,Department of Vascular Surgery, Cleveland Clinic, Cleveland, Ohio
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Store-Operated Calcium Channel Complex in Postsynaptic Spines: A New Therapeutic Target for Alzheimer's Disease Treatment. J Neurosci 2017; 36:11837-11850. [PMID: 27881772 DOI: 10.1523/jneurosci.1188-16.2016] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 09/08/2016] [Accepted: 09/11/2016] [Indexed: 12/11/2022] Open
Abstract
Mushroom dendritic spine structures are essential for memory storage and the loss of mushroom spines may explain memory defects in aging and Alzheimer's disease (AD). The stability of mushroom spines depends on stromal interaction molecule 2 (STIM2)-mediated neuronal-store-operated Ca2+ influx (nSOC) pathway, which is compromised in AD mouse models, in aging neurons, and in sporadic AD patients. Here, we demonstrate that the Transient Receptor Potential Canonical 6 (TRPC6) and Orai2 channels form a STIM2-regulated nSOC Ca2+ channel complex in hippocampal mushroom spines. We further demonstrate that a known TRPC6 activator, hyperforin, and a novel nSOC positive modulator, NSN21778 (NSN), can stimulate activity of nSOC pathway in the spines and rescue mushroom spine loss in both presenilin and APP knock-in mouse models of AD. We further show that NSN rescues hippocampal long-term potentiation impairment in APP knock-in mouse model. We conclude that the STIM2-regulated TRPC6/Orai2 nSOC channel complex in dendritic mushroom spines is a new therapeutic target for the treatment of memory loss in aging and AD and that NSN is a potential candidate molecule for therapeutic intervention in brain aging and AD. SIGNIFICANCE STATEMENT Mushroom dendritic spine structures are essential for memory storage and the loss of mushroom spines may explain memory defects in Alzheimer's disease (AD). This study demonstrated that Transient Receptor Potential Canonical 6 (TRPC6) and Orai2 form stromal interaction molecule 2 (STIM2)-regulated neuronal-store-operated Ca2+ influx (nSOC) channel complex in hippocampal synapse and the resulting Ca2+ influx is critical for long-term maintenance of mushroom spines in hippocampal neurons. A novel nSOC-positive modulator, NSN21778 (NSN), rescues mushroom spine loss and synaptic plasticity impairment in AD mice models. The TRPC6/Orai2 nSOC channel complex is a new therapeutic target and NSN is a potential candidate molecule for therapeutic intervention in brain aging and AD.
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Hyperforin activates gene transcription involving transient receptor potential C6 channels. Biochem Pharmacol 2017; 129:96-107. [DOI: 10.1016/j.bcp.2017.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/17/2017] [Indexed: 12/26/2022]
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Transcriptional and Epigenetic Regulation in Injury-Mediated Neuronal Dendritic Plasticity. Neurosci Bull 2016; 33:85-94. [PMID: 27730386 DOI: 10.1007/s12264-016-0071-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/27/2016] [Indexed: 12/26/2022] Open
Abstract
Injury to the nervous system induces localized damage in neural structures and neuronal death through the primary insult, as well as delayed atrophy and impaired plasticity of the delicate dendritic fields necessary for interneuronal communication. Excitotoxicity and other secondary biochemical events contribute to morphological changes in neurons following injury. Evidence suggests that various transcription factors are involved in the dendritic response to injury and potential therapies. Transcription factors play critical roles in the intracellular regulation of neuronal morphological plasticity and dendritic growth and patterning. Mounting evidence supports a crucial role for epigenetic modifications via histone deacetylases, histone acetyltransferases, and DNA methyltransferases that modify gene expression in neuronal injury and repair processes. Gene regulation through epigenetic modification is of great interest in neurotrauma research, and an early picture is beginning to emerge concerning how injury triggers intracellular events that modulate such responses. This review provides an overview of injury-mediated influences on transcriptional regulation through epigenetic modification, the intracellular processes involved in the morphological consequences of such changes, and potential approaches to the therapeutic manipulation of neuronal epigenetics for regulating gene expression to facilitate growth and signaling through dendritic arborization following injury.
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Yan X, Liu J, Ye Z, Huang J, He F, Xiao W, Hu X, Luo Z. CaMKII-Mediated CREB Phosphorylation Is Involved in Ca2+-Induced BDNF mRNA Transcription and Neurite Outgrowth Promoted by Electrical Stimulation. PLoS One 2016; 11:e0162784. [PMID: 27611779 PMCID: PMC5017744 DOI: 10.1371/journal.pone.0162784] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 08/29/2016] [Indexed: 11/19/2022] Open
Abstract
Electrical stimulation (ES)-triggered up-regulation of brain-derived neurotrophic factor (BDNF) and neurite outgrowth in cultured rat postnatal dorsal root ganglion neurons (DRGNs) is calcium (Ca2+)-dependent. The effects of increased Ca2+ on BDNF up-regulation and neurite outgrowth remain unclear. We showed here that ES increased phosphorylation of the cAMP-response element binding protein (CREB). Blockade of Ca2+ suppressed CREB phosphorylation and neurite outgrowth. Down-regulation of phosphorylated (p)-CREB reduced BDNF transcription and neurite outgrowth triggered by ES. Furthermore, blockade of calmodulin-dependent protein kinase II (CaMKII) using the inhibitors KN93 or KN62 reduced p-CREB, and specific knockdown of the CaMKIIα or CaMKIIβ subunit was sufficient to suppress p-CREB. Recombinant BDNF or hyperforin reversed the effects of Ca2+ blockade and CaMKII knockdown. Taken together, these data establish a potential signaling pathway of Ca2+-CaMKII-CREB in neuronal activation. To our knowledge, this is the first report of the mechanisms of Ca2+-dependent BDNF transcription and neurite outgrowth triggered by ES. These findings might help further investigation of complex molecular signaling networks in ES-triggered nerve regeneration in vivo.
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Affiliation(s)
- Xiaodong Yan
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, China
| | - Juanfang Liu
- Department of Clinical Aerospace Medicine, Fourth Military Medical University, Xi’an 710032, China
| | - Zhengxu Ye
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Jinghui Huang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Fei He
- Department of Hereditary and Development, Basic Unit, Fourth Military Medical University, Xi’an 710032, China
| | - Wei Xiao
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Xueyu Hu
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- * E-mail: (ZL); (XH)
| | - Zhuojing Luo
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- * E-mail: (ZL); (XH)
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Extracellular Calcium Has Multiple Targets to Control Cell Proliferation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 898:133-56. [DOI: 10.1007/978-3-319-26974-0_7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ginsenoside-Rd Promotes Neurite Outgrowth of PC12 Cells through MAPK/ERK- and PI3K/AKT-Dependent Pathways. Int J Mol Sci 2016; 17:ijms17020177. [PMID: 26840295 PMCID: PMC4783911 DOI: 10.3390/ijms17020177] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 01/12/2016] [Accepted: 01/22/2016] [Indexed: 12/16/2022] Open
Abstract
Panax ginseng is a famous herbal medicine widely used in Asia. Ginsenosides have been identified as the principle active ingredients for Panax ginseng’s biological activity, among which ginsenoside Rd (Rd) attracts extensive attention for its obvious neuroprotective activities. Here we investigated the effect of Rd on neurite outgrowth, a crucial process associated with neuronal repair. PC12 cells, which respond to nerve growth factor (NGF) and serve as a model for neuronal cells, were treated with different concentrations of Rd, and then their neurite outgrowth was evaluated. Our results showed that 10 μM Rd significantly increased the percentages of long neurite- and branching neurite-bearing cells, compared with respective controls. The length of the longest neurites and the total length of neurites in Rd-treated PC12 cells were much longer than that of respective controls. We also showed that Rd activated ERK1/2 and AKT but not PKC signalings, and inhibition of ERK1/2 by PD98059 or/and AKT by LY294002 effectively attenuated Rd-induced neurite outgrowth. Moreover, Rd upregulated the expression of GAP-43, a neuron-specific protein involved in neurite outgrowth, while PD98059 or/and LY294002 decreased Rd-induced increased GAP-43 expression. Taken together, our results provided the first evidence that Rd may promote the neurite outgrowth of PC12 cells by upregulating GAP-43 expression via ERK- and ARK-dependent signaling pathways.
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Sawamura S, Hatano M, Takada Y, Hino K, Kawamura T, Tanikawa J, Nakagawa H, Hase H, Nakao A, Hirano M, Rotrattanadumrong R, Kiyonaka S, Mori MX, Nishida M, Hu Y, Inoue R, Nagata R, Mori Y. Screening of Transient Receptor Potential Canonical Channel Activators Identifies Novel Neurotrophic Piperazine Compounds. Mol Pharmacol 2016; 89:348-63. [PMID: 26733543 DOI: 10.1124/mol.115.102863] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/04/2016] [Indexed: 12/23/2022] Open
Abstract
Transient receptor potential canonical (TRPC) proteins form Ca(2+)-permeable cation channels activated upon stimulation of metabotropic receptors coupled to phospholipase C. Among the TRPC subfamily, TRPC3 and TRPC6 channels activated directly by diacylglycerol (DAG) play important roles in brain-derived neurotrophic factor (BDNF) signaling, promoting neuronal development and survival. In various disease models, BDNF restores neurologic deficits, but its therapeutic potential is limited by its poor pharmacokinetic profile. Elucidation of a framework for designing small molecules, which elicit BDNF-like activity via TRPC3 and TRPC6, establishes a solid basis to overcome this limitation. We discovered, through library screening, a group of piperazine-derived compounds that activate DAG-activated TRPC3/TRPC6/TRPC7 channels. The compounds [4-(5-chloro-2-methylphenyl)piperazin-1-yl](3-fluorophenyl)methanone (PPZ1) and 2-[4-(2,3-dimethylphenyl)piperazin-1-yl]-N-(2-ethoxyphenyl)acetamide (PPZ2) activated, in a dose-dependent manner, recombinant TRPC3/TRPC6/TRPC7 channels, but not other TRPCs, in human embryonic kidney cells. PPZ2 activated native TRPC6-like channels in smooth muscle cells isolated from rabbit portal vein. Also, PPZ2 evoked cation currents and Ca(2+) influx in rat cultured central neurons. Strikingly, both compounds induced BDNF-like neurite growth and neuroprotection, which were abolished by a knockdown or inhibition of TRPC3/TRPC6/TRPC7 in cultured neurons. Inhibitors of Ca(2+) signaling pathways, except calcineurin, impaired neurite outgrowth promotion induced by PPZ compounds. PPZ2 increased activation of the Ca(2+)-dependent transcription factor, cAMP response element-binding protein. These findings suggest that Ca(2+) signaling mediated by activation of DAG-activated TRPC channels underlies neurotrophic effects of PPZ compounds. Thus, piperazine-derived activators of DAG-activated TRPC channels provide important insights for future development of a new class of synthetic neurotrophic drugs.
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Affiliation(s)
- Seishiro Sawamura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Masahiko Hatano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Yoshinori Takada
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Kyosuke Hino
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Tetsuya Kawamura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Jun Tanikawa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Hiroshi Nakagawa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Hideharu Hase
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Akito Nakao
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Mitsuru Hirano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Rachapun Rotrattanadumrong
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Shigeki Kiyonaka
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Masayuki X Mori
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Motohiro Nishida
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Yaopeng Hu
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Ryuji Inoue
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Ryu Nagata
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
| | - Yasuo Mori
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering (S.S., Ma.H., Y.T., H.H., Mi.H., R.R., S.K., M.X.M., Y.M.), and Department of Technology and Ecology, Hall of Global Environmental Studies (S.K., Y.M.), Kyoto University, Kyoto, Japan; Sumitomo Dainippon Pharma Co., Ltd., Osaka, Japan (Y.T., K.H., T.K., J.T., H.N., R.N.); Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan (A.N.); Division of Cardiocirculatory Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan (M.N.); and Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan (Y.H., R.I.)
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Urban N, Wang L, Kwiek S, Rademann J, Kuebler WM, Schaefer M. Identification and Validation of Larixyl Acetate as a Potent TRPC6 Inhibitor. Mol Pharmacol 2015; 89:197-213. [PMID: 26500253 DOI: 10.1124/mol.115.100792] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 10/21/2015] [Indexed: 01/17/2023] Open
Abstract
Classical or canonical transient receptor potential 6 (TRPC6), a nonselective and Ca(2+)-permeable cation channel, mediates pathophysiological responses within pulmonary and renal diseases that are still poorly controlled by current medication. Thus, controlling TRPC6 activity may provide a promising and challenging pharmacological approach. Recently identified chemical entities have demonstrated that TRPC6 is pharmacologically targetable. However, isotype-selectivity with regard to its closest relative, TRPC3, is difficult to achieve. Reasoning that balsams, essential oils, or incense materials that are traditionally used for inhalation may contain biologic activities to block TRPC6 activity, we embarked on a natural compound strategy to identify new TRPC6-blocking chemical entities. Within several preparations of plant extracts, a strong TRPC6-inhibitory activity was found in conifer balsams. The biologic activity was associated with nonvolatile resins, but not with essential oils. Of various conifers, the larch balsam was unique in displaying a marked TRPC6-prevalent mode of action. By testing the main constituents of larch resin, we identified larixol and larixyl acetate as blockers of Ca(2+) entry and ionic currents through diacylglycerol- or receptor-activated recombinant TRPC6 channels, exhibiting approximately 12- and 5-fold selectivity compared with its closest relatives TRPC3 and TRPC7, respectively. No significant inhibition of more distantly related TRPV or TRPM channels was seen. The potent inhibition of recombinant TRPC6 by larixyl acetate (IC50 = 0.1-0.6 µM) was confirmed for native TRPC6-like [Ca(2+)]i signals in diacylglycerol-stimulated rat pulmonary artery smooth muscle cells. In isolated mouse lungs, larix-6-yl monoacetate (CAS 4608-49-5; larixyl acetate; 5 µM) prevented acute hypoxia-induced vasoconstriction. We conclude that larch-derived labdane-type diterpenes are TRPC6-selective inhibitors and may represent a starting point for pharmacological TRPC6 modulation within experimental therapies.
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Affiliation(s)
- Nicole Urban
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
| | - Liming Wang
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
| | - Sandra Kwiek
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
| | - Jörg Rademann
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
| | - Wolfgang M Kuebler
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
| | - Michael Schaefer
- Rudolf-Boehm-Institut für Pharmakologie und Toxikologie, Universität Leipzig, Leipzig, Germany (N.U., M.S.); Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany (S.K., J.R.); and The Keenan Research Centre of St. Michael's Hospital, Toronto, Canada (L.W., W.M.K.)
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50
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Nerve Growth Factor Regulates Transient Receptor Potential Vanilloid 2 via Extracellular Signal-Regulated Kinase Signaling To Enhance Neurite Outgrowth in Developing Neurons. Mol Cell Biol 2015; 35:4238-52. [PMID: 26416880 DOI: 10.1128/mcb.00549-15] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 09/21/2015] [Indexed: 12/13/2022] Open
Abstract
Neurite outgrowth is key to the formation of functional circuits during neuronal development. Neurotrophins, including nerve growth factor (NGF), increase neurite outgrowth in part by altering the function and expression of Ca(2+)-permeable cation channels. Here we report that transient receptor potential vanilloid 2 (TRPV2) is an intracellular Ca(2+)-permeable TRPV channel upregulated by NGF via the mitogen-activated protein kinase (MAPK) signaling pathway to augment neurite outgrowth. TRPV2 colocalized with Rab7, a late endosome protein, in addition to TrkA and activated extracellular signal-regulated kinase (ERK) in neurites, indicating that the channel is closely associated with signaling endosomes. In line with these results, we showed that TRPV2 acts as an ERK substrate and identified the motifs necessary for phosphorylation of TRPV2 by ERK. Furthermore, neurite length, TRPV2 expression, and TRPV2-mediated Ca(2+) signals were reduced by mutagenesis of these key ERK phosphorylation sites. Based on these findings, we identified a previously uncharacterized mechanism by which ERK controls TRPV2-mediated Ca(2+) signals in developing neurons and further establish TRPV2 as a critical intracellular ion channel in neuronal function.
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