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Zhou Z, An Q, Zhang W, Li Y, Zhang Q, Yan H. Histamine and receptors in neuroinflammation: Their roles on neurodegenerative diseases. Behav Brain Res 2024; 465:114964. [PMID: 38522596 DOI: 10.1016/j.bbr.2024.114964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 03/26/2024]
Abstract
Histamine, an auto-reactive substance and mediator of inflammation, is synthesized from histidine through the action of histidine decarboxylase (HDC). It primarily acts on histamine receptors in the central nervous system (CNS). Increasing evidence suggests that histamine and its receptors play a crucial role in neuroinflammation, thereby modulating the pathology of neurodegenerative diseases. Recent studies have demonstrated that histamine regulates the phenotypic switching of microglia and astrocytes, inhibits the production of pro-inflammatory cytokines, and alleviates inflammatory responses. In the CNS, our research group has also found that histamine and its receptors are involved in regulating inflammatory responses and play a central role in ameliorating chronic neuroinflammation in neurodegenerative diseases. In this review, we will discuss the role of histamine and its receptors in neuroinflammation associated with neurodegenerative diseases, potentially providing a novel therapeutic target for the treatment of chronic neuroinflammation-related neurodegenerative diseases in clinical settings.
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Affiliation(s)
- Zhenyu Zhou
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Qi An
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Wanying Zhang
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Yixin Li
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Qihang Zhang
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Haijing Yan
- Department of Pharmacology, College of Basic Medicine, Binzhou Medical University, Yantai, China.
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Michinaga S, Nagata A, Ogami R, Ogawa Y, Hishinuma S. Histamine H 1 Receptor-Mediated JNK Phosphorylation Is Regulated by G q Protein-Dependent but Arrestin-Independent Pathways. Int J Mol Sci 2024; 25:3395. [PMID: 38542369 PMCID: PMC10970263 DOI: 10.3390/ijms25063395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/15/2024] [Accepted: 03/15/2024] [Indexed: 04/04/2024] Open
Abstract
Arrestins are known to be involved not only in the desensitization and internalization of G protein-coupled receptors but also in the G protein-independent activation of mitogen-activated protein (MAP) kinases, such as extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK), to regulate cell proliferation and inflammation. Our previous study revealed that the histamine H1 receptor-mediated activation of ERK is dually regulated by Gq proteins and arrestins. In this study, we investigated the roles of Gq proteins and arrestins in the H1 receptor-mediated activation of JNK in Chinese hamster ovary (CHO) cells expressing wild-type (WT) human H1 receptors, the Gq protein-biased mutant S487TR, and the arrestin-biased mutant S487A. In these mutants, the Ser487 residue in the C-terminus region of the WT was truncated (S487TR) or mutated to alanine (S487A). Histamine significantly stimulated JNK phosphorylation in CHO cells expressing WT and S487TR but not S487A. Histamine-induced JNK phosphorylation in CHO cells expressing WT and S487TR was suppressed by inhibitors against H1 receptors (ketotifen and diphenhydramine), Gq proteins (YM-254890), and protein kinase C (PKC) (GF109203X) as well as an intracellular Ca2+ chelator (BAPTA-AM) but not by inhibitors against G protein-coupled receptor kinases (GRK2/3) (cmpd101), β-arrestin2 (β-arrestin2 siRNA), and clathrin (hypertonic sucrose). These results suggest that the H1 receptor-mediated phosphorylation of JNK is regulated by Gq-protein/Ca2+/PKC-dependent but GRK/arrestin/clathrin-independent pathways.
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Affiliation(s)
| | | | | | | | - Shigeru Hishinuma
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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Michinaga S, Nagata A, Ogami R, Ogawa Y, Hishinuma S. Differential regulation of histamine H 1 receptor-mediated ERK phosphorylation by G q proteins and arrestins. Biochem Pharmacol 2023; 213:115595. [PMID: 37201878 DOI: 10.1016/j.bcp.2023.115595] [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: 03/15/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
Gq protein-coupled histamine H1 receptors play crucial roles in allergic and inflammatory reactions, in which the phosphorylation of extracellular signal-regulated kinase (ERK) appears to mediate the production of inflammatory cytokines. ERK phosphorylation is regulated by G protein- and arrestin-mediated signal transduction pathways. Here, we aimed to explore how H1 receptor-mediated processes of ERK phosphorylation might be differentially regulated by Gq proteins and arrestins. For this purpose, we evaluated the regulatory mechanism(s) of H1 receptor-mediated ERK phosphorylation in Chinese hamster ovary cells expressing Gq protein- and arrestin-biased mutants of human H1 receptors, S487TR and S487A, in which the Ser487 residue in the C-terminal was truncated and mutated to alanine, respectively. Immunoblotting analysis indicated that histamine-induced ERK phosphorylation was prompt and transient in cells expressing Gq protein-biased S487TR, whereas it was slow and sustained in cells expressing arrestin-biased S487A. Inhibitors of Gq proteins (YM-254890) and protein kinase C (PKC) (GF109203X), and an intracellular Ca2+ chelator (BAPTA-AM) suppressed histamine-induced ERK phosphorylation in cells expressing S487TR, but not those expressing S487A. Conversely, inhibitors of G protein-coupled receptor kinases (GRK2/3) (cmpd101), β-arrestin2 (β-arrestin2 siRNA), clathrin (hypertonic sucrose), Raf (LY3009120), and MEK (U0126) suppressed histamine-induced ERK phosphorylation in cells expressing S487A, but not those expressing S487TR. These results suggest that H1 receptor-mediated ERK phosphorylation might be differentially regulated by the Gq protein/Ca2+/PKC and GRK/arrestin/clathrin/Raf/MEK pathways to potentially determine the early and late phases of histamine-induced allergic and inflammatory responses, respectively.
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Affiliation(s)
- Shotaro Michinaga
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Ayaka Nagata
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Ryosuke Ogami
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Yasuhiro Ogawa
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Shigeru Hishinuma
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
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Neumann J, Hofmann B, Kirchhefer U, Dhein S, Gergs U. Function and Role of Histamine H 1 Receptor in the Mammalian Heart. Pharmaceuticals (Basel) 2023; 16:ph16050734. [PMID: 37242517 DOI: 10.3390/ph16050734] [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: 03/27/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Histamine can change the force of cardiac contraction and alter the beating rate in mammals, including humans. However, striking species and regional differences have been observed. Depending on the species and the cardiac region (atrium versus ventricle) studied, the contractile, chronotropic, dromotropic, and bathmotropic effects of histamine vary. Histamine is present and is produced in the mammalian heart. Thus, histamine may exert autocrine or paracrine effects in the mammalian heart. Histamine uses at least four heptahelical receptors: H1, H2, H3 and H4. Depending on the species and region studied, cardiomyocytes express only histamine H1 or only histamine H2 receptors or both. These receptors are not necessarily functional concerning contractility. We have considerable knowledge of the cardiac expression and function of histamine H2 receptors. In contrast, we have a poor understanding of the cardiac role of the histamine H1 receptor. Therefore, we address the structure, signal transduction, and expressional regulation of the histamine H1 receptor with an eye on its cardiac role. We point out signal transduction and the role of the histamine H1 receptor in various animal species. This review aims to identify gaps in our knowledge of cardiac histamine H1 receptors. We highlight where the published research shows disagreements and requires a new approach. Moreover, we show that diseases alter the expression and functional effects of histamine H1 receptors in the heart. We found that antidepressive drugs and neuroleptic drugs might act as antagonists of cardiac histamine H1 receptors, and believe that histamine H1 receptors in the heart might be attractive targets for drug therapy. The authors believe that a better understanding of the role of histamine H1 receptors in the human heart might be clinically relevant for improving drug therapy.
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Affiliation(s)
- Joachim Neumann
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Magdeburger Straße 4, Martin-Luther-Universität Halle-Wittenberg, 06097 Halle, Germany
| | - Britt Hofmann
- Herzchirurgie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube Straße 40, 06097 Halle, Germany
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Domagkstraße 12, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Stefan Dhein
- Rudolf-Boehm Institut für Pharmakologie und Toxikologie, Härtelstraße 16-18, Universität Leipzig, 04107 Leipzig, Germany
| | - Ulrich Gergs
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Magdeburger Straße 4, Martin-Luther-Universität Halle-Wittenberg, 06097 Halle, Germany
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Shaha A, Islam R, Tanaka N, Kashiwada Y, Fukui H, Takeda N, Kitamura Y, Mizuguchi H. Betuletol, a Propolis Component, Suppresses IL-33 Gene Expression and Effective against Eosinophilia. Molecules 2022; 27:molecules27175459. [PMID: 36080225 PMCID: PMC9457836 DOI: 10.3390/molecules27175459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Propolis, a resinous substance produced by honeybees, has been used in folk medicine since ancient times due to its many biological benefits such as antitumor, antioxidant, antimicrobial, anti-inflammatory, and immunomodulatory effects. Propolis contains flavonoids, terpenoids, aromatic aldehydes, and alcohols, which vary with different climate and environmental conditions. In our study, we examined the antiallergic activity of Brazilian green propolis (BGP) and isolated the active compound that can suppress an allergy-sensitive gene, IL-33, expression and eosinophilia. Ethanolic extract of BGP freeze-dried powder was fractionated with several solvent systems, and the active fractions were collected based on activity measurement. The single active compound was found by thin-layer chromatography. Using column chromatography and NMR, the active compound was isolated and identified as 3,5,7-trihydroxy-6,4’-dimethoxyflavone, also known as betuletol. Further, the antiallergic activity of that has been examined in PMA-induced up-regulation of IL-33 gene expression in Swiss 3T3 cells. Our data showed the IL-33 gene suppression both by BGP and the isolated active compound, betuletol. We also found that betuletol suppressed ERK phosphorylation, suggesting it could be effective in suppressing IL-33 mediated eosinophilic chronic inflammation and will provide new insights to develop potent therapeutics against allergic inflammations.
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Affiliation(s)
- Aurpita Shaha
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
- Laboratory of Tumor Microenvironment and Metastasis, The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Rezwanul Islam
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
- Department of Biomedical Sciences, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33431, USA
| | - Naonobu Tanaka
- Department of Parmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Yoshiki Kashiwada
- Department of Parmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Fukui
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka 584-8540, Japan
- Medical Corporation Kinshukai, Osaka 558-0011, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka 584-8540, Japan
- Correspondence: ; Tel.: +81-721-24-9462
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Fujii T, Kitamura Y, Kamimura S, Takeda N. Effects of sublingual immunotherapy with tablets or drops containing Japanese cedar pollen antigens on nasal symptoms and sleep disturbance in patients with Japanese cedar pollinosis. THE JOURNAL OF MEDICAL INVESTIGATION 2022; 69:97-100. [PMID: 35466153 DOI: 10.2152/jmi.69.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE We examined the effects of SLIT with tablets containing JCP antigens on nasal symptoms and sleep disturbance in patients with Japanese cedar pollinosis during pollen dispersal season. METHODS A total of 128 patients with Japanese cedar pollinosis were categorized into four groups:19 one-year SLIT with tablets group, 16 two-year SLIT with drops group, 19 antihistamine group, and 74 untreated group. The scores of nasal symptoms and sleep disturbance were evaluated based on the Japanese guidelines for allergic rhinitis and the Athens Insomnia Scale. RESULTS The scores of nasal symptoms and sleep disturbance at the peak cedar pollen period in the two-year SLIT with drop group and the one-year SLIT with tablets group were significantly lower than those in untreated group. Additionally, these scores were significantly lower in the one-year SLIT with tablets group than those in the antihistamine group. CONCLUSION It is suggested that SLIT with JCP tablets improved both nasal symptoms and sleep disturbances at peak pollen period in patients with Japanese cedar pollinosis. SLIT with JCP tablets for one year was more effective than SLIT with JCP drops for two years and prophylactic treatment with antihistamines. J. Med. Invest. 69 : 97-100, February, 2022.
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Affiliation(s)
- Tatsuya Fujii
- Department of Otolaryngology, JA Kochi Hospital, Kochi, Japan.,Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Seiichiro Kamimura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Fukui H, Mizuguchi H, Kitamura Y, Takeda N. Patho-Pharmacological Research of Anti-allergic Natural Products Targeting Antihistamine-Sensitive and -Insensitive Allergic Mechanisms. Curr Top Behav Neurosci 2021; 59:77-90. [PMID: 34647283 DOI: 10.1007/7854_2021_255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Histamine H1 receptor (H1R) has a special up-regulation mechanism by the stimulation of H1R, mediated by protein kinase C-delta (PKCδ) signaling and H1R gene expression, resulting increase in H1R signaling. Increase in H1R mRNA in nasal mucosa was induced after the provocation of nasal hypersensitivity model rats and suppressed by the pre-treatment of antihistamines. Improvement of nasal symptoms and suppression of H1R mRNA expression in nasal mucosa were also observed by the pre-treatment of antihistamines in pollinosis patients. Elucidation of a correlation between symptoms and H1R mRNA level suggests that H1R gene is an allergic disease (AD)-susceptibility gene, targeted by antihistamines. Similar to antihistamines, pre-treatment of Kujin extract, an anti-allergic Kampo medicine improved nasal symptoms and suppressed H1R mRNA expression in nasal hypersensitivity model rats. (-)-Maackiain targeting heat shock protein 90 (Hsp90) was isolated as an inhibitor of PKCδ signaling-mediated H1R gene expression from Kujin extract. In addition to H1R-mediated activation of H1R gene expression as the first mechanism, nuclear factor of activated T-cells (NFAT)-mediated IL-9 gene expression is suggested to participate to allergic symptoms as the second mechanism insensitive to antihistamines. Pyrogallol and proanthocyanidin suppressing IL-9 gene expression were discovered from Awa-tea and lotus root knots, respectively. Combination therapy using medicines suppressing both H1R gene expression and IL-9 gene expression is promising for outstanding alleviation of AD. Multifactorial diseases involving H1R gene expression may be treated by the combination therapy with antihistamine and complementary drugs, and diseases involving PKCδ signaling may be treated by drugs targeting Hsp90.
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Affiliation(s)
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan
| | - Yoshiaki Kitamura
- Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Noriaki Takeda
- Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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Mizuguchi H, Kitamura Y, Takeda N, Fukui H. Molecular Signaling and Transcriptional Regulation of Histamine H 1 Receptor Gene. Curr Top Behav Neurosci 2021; 59:91-110. [PMID: 34595742 DOI: 10.1007/7854_2021_256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Histamine-activated histamine H1 receptor (H1R) signaling regulates many gene expressions, mainly through the protein kinase C (PKC)/extracellular signal-regulated kinases (ERK) signaling. Involvement of other signaling, including NF-κB, Wnt, RUNX-2, and Rho A signaling was also demonstrated. In addition, cAMP production through the activation of H1R signaling was reported. H1R gene itself is also up-regulated by the activation of H1R signaling with histamine. Here, we review our recent findings in the molecular signaling and transcriptional regulation of the H1R gene. Stimulation with histamine up-regulates H1R gene expression through the activation of H1R in HeLa cells. The PKCδ/ERK/poly(ADP)ribosyl transferase-1 (PARP-1) signaling was involved in this up-regulation. Heat shock protein 90 also plays an important role in regulating PKCδ translocation. Promoter analyses revealed the existence of two promoters in the human H1R gene in HeLa cells. H1R-activated H1R gene up-regulation in response to histamine was also observed in U373 astroglioma cells. However, this up-regulation was mediated not through the PKCδ signaling but possibly through the PKCα signaling. In addition, the promoter region responsible for histamine-induced H1R gene transcription in U373 cells was different from that of HeLa cells. These findings suggest that the molecular signaling and transcriptional regulation of the H1R gene are different between neuronal cells and non-neuronal cells.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan.
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Signaling Pathway of Histamine H 1 Receptor-Mediated Histamine H 1 Receptor Gene Upregulation Induced by Histamine in U-373 MG Cells. Curr Issues Mol Biol 2021; 43:1243-1254. [PMID: 34698097 PMCID: PMC8929123 DOI: 10.3390/cimb43030088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/19/2021] [Accepted: 09/22/2021] [Indexed: 12/19/2022] Open
Abstract
Histamine H1 receptor (H1R) is one of the targets of histamine in the nervous system and the peripheral tissues. Protein kinase Cδ (PKCδ) signaling is involved in histamine-induced upregulation of H1R gene expression in HeLa cells. Histamine also upregulates H1R gene expression in U-373 MG cells. However, the molecular signaling of this upregulation is still unclear. Here, we investigated the molecular mechanism of histamine-induced H1R gene upregulation in U-373 MG cells. Histamine-induced H1R gene upregulation was inhibited by H1R antagonist d-chlorpheniramine, but not by ranitidine, ciproxifan, or JNJ77777120, and H2R, H3R, or H4R antagonists, respectively. Ro-31-8220 and Go6976 also suppressed this upregulation, however, the PKCδ selective inhibitor rottlerin and the PKCβ selective inhibitor Ly333531 did not. Time-course studies showed distinct kinetics of H1R gene upregulation in U-373 MG cells from that in HeLa cells. A promoter assay revealed that the promoter region responsible for H1R gene upregulation in U-373 MG cells was different from that of HeLa cells. These data suggest that the H1R-activated H1R gene expression signaling pathway in U-373 MG cells is different from that in HeLa cells, possibly by using different promoters. The involvement of PKCα also suggests that compounds that target PKCδ could work as peripheral type H1R-selective inhibitors without a sedative effect.
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Effects of Syo-seiryu-to and Its Constituent Crude Drugs on Phorbol Ester-Induced Up-Regulation of IL-33 and Histamine H1 Receptor mRNAs in Swiss 3T3 and HeLa Cells. ALLERGIES 2021. [DOI: 10.3390/allergies1030015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Syo-seiryu-to (SST) is a traditional herbal medicine that has been used clinically to treat allergic rhinitis (AR) in Japan. SST improves acute symptoms, such as sneezing and rhinorrhea, as well as chronic symptoms, such as nasal obstruction, in patients with AR. However, its therapeutic mechanisms remain unknown. We examined the effects of SST and eight constituent crude drugs on phorbol 12-myristate-13-acetate (PMA)-induced gene up-regulation of IL-33 and histamine H1 receptor (H1R), which are responsible for the pathogenesis of AR. We found that SST and its crude drugs, except for Pinellia tuber, significantly and dose-dependently suppressed PMA-induced both IL-33 and H1R mRNA up-regulation in vitro. The half-maximal inhibitory concentration values of the seven crude drugs to inhibit PMA-induced IL-33 mRNA up-regulation were correlated with those related to H1R mRNA up-regulation, suggesting that they act on a common signal molecule. These results suggest that SST improves nasal congestion that is induced by IL-33-related eosinophil infiltration and inhibits sneezing and rhinorrhea that are induced by H1R-mediated histamine signaling in the nasal mucosa of AR patients through its inhibition of a common molecule in the gene expression pathways of IL-33 and H1R. The results could explain the advantages of traditional herbal medicine, in which mixing various crude drugs not only acts on a common target to enhance its pharmacological action, similar to the effect of a high concentration of a single crude extract but also has the benefit of reducing the side effects of each crude drug.
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Jacob RS, Eichmann C, Dema A, Mercadante D, Selenko P. α-Synuclein plasma membrane localization correlates with cellular phosphatidylinositol polyphosphate levels. eLife 2021; 10:61951. [PMID: 33587036 PMCID: PMC7929559 DOI: 10.7554/elife.61951] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 02/12/2021] [Indexed: 12/11/2022] Open
Abstract
The Parkinson's disease protein α-synuclein (αSyn) promotes membrane fusion and fission by interacting with various negatively charged phospholipids. Despite postulated roles in endocytosis and exocytosis, plasma membrane (PM) interactions of αSyn are poorly understood. Here, we show that phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphatidylinositol 3,4,5-trisphosphate (PIP3), two highly acidic components of inner PM leaflets, mediate PM localization of endogenous pools of αSyn in A2780, HeLa, SK-MEL-2, and differentiated and undifferentiated neuronal SH-SY5Y cells. We demonstrate that αSyn binds to reconstituted PIP2 membranes in a helical conformation in vitro and that PIP2 synthesizing kinases and hydrolyzing phosphatases reversibly redistribute αSyn in cells. We further delineate that αSyn-PM targeting follows phosphoinositide-3 kinase (PI3K)-dependent changes of cellular PIP2 and PIP3 levels, which collectively suggests that phosphatidylinositol polyphosphates contribute to αSyn's function(s) at the plasma membrane.
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Affiliation(s)
- Reeba Susan Jacob
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Cédric Eichmann
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Alessandro Dema
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Davide Mercadante
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Philipp Selenko
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
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Kamimura S, Kitamura Y, Fujii T, Okamoto K, Sanada N, Okajima N, Wakugawa T, Fukui H, Mizuguchi H, Takeda N. Effects of narrow-band UVB on nasal symptom and upregulation of histamine H 1 receptor mRNA in allergic rhinitis model rats. Laryngoscope Investig Otolaryngol 2021; 6:34-41. [PMID: 33614927 PMCID: PMC7883611 DOI: 10.1002/lio2.518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/14/2020] [Accepted: 12/26/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Phototherapy with narrow-band ultraviolet B (narrow-band UVB) is clinically effective treatment for atopic dermatitis. In the present study, we examined the effects of intranasal irradiation with narrow-band UVB on nasal symptom, upregulation of histamine H1 receptor (H1R) gene expression and induction of DNA damage in the nasal mucosa of allergic rhinitis (AR) model rat. METHODS AR model rats were intranasally irradiated with 310 nm of narrow-band UVB. Nasal mucosal levels of H1R mRNA were measured using real-time quantitative reverse transcriptase (RT)-PCR. DNA damage was evaluated using cyclobutane pyrimidine dimer (CPD) immunostaining. RESULTS In toluene 2,4-diisocyanate (TDI)-sensitized rats, TDI provoked sneezes and H1R gene expression in the nasal mucosa. Intranasal pre-irradiation with 310 nm narrow-band UVB at doses of 600 and 1400, but not 200 mJ/cm2 significantly inhibited the number of sneezes and upregulation of H1R gene expression provoked by TDI. CPD-positive cells appeared in the nasal mucosa after intranasal narrow-band UVB irradiation at a dose of 1400, but not 200 and 600 mJ/cm2. The suppression of TDI-provoked sneezes and upregulation of H1R gene expression lasted 24 hours, but not 48 hours, after narrow-band UVB irradiation with a dose of 600 mJ/cm2. CONCLUSIONS Intranasal pre-irradiation with narrow-band UVB dose-dependently inhibited sneezes and upregulation of H1R gene expression of the nasal mucosa in AR model rats, suggesting that the inhibition of nasal upregulation of H1R gene expression suppressed nasal symptom. The suppression after narrow-band UVB irradiation at a dose of 600 mJ/cm2 was reversible without induction of DNA damage. These findings indicated that low-dose narrow-band UVB phototherapy could be effectively and safely used for AR treatment in a clinical setting. LEVEL OF EVIDENCE NA.
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Affiliation(s)
- Seiichiro Kamimura
- Department of OtolaryngologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Yoshiaki Kitamura
- Department of OtolaryngologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Tatsuya Fujii
- Department of OtolaryngologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Kentaro Okamoto
- Department of Molecular PharmacologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Nanae Sanada
- Department of Molecular PharmacologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Natsuki Okajima
- Department of Molecular PharmacologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Tomoharu Wakugawa
- Department of Molecular PharmacologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Hiroyuki Fukui
- Department of OtolaryngologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of PharmacyOsaka Ohtani UniversityOsakaJapan
| | - Noriaki Takeda
- Department of OtolaryngologyInstitute of Biomedical Sciences, Tokushima University Graduate SchoolTokushimaJapan
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Kitamura Y, Kamimura S, Fujii T, Mizuguchi H, Naito K, Kondo E, Matsuda K, Azuma T, Sato G, Fukui H, Takeda N. Effects of corticosteroid on mRNA levels of histamine H1 receptor in nasal mucosa of healthy participants and HeLa cells. THE JOURNAL OF MEDICAL INVESTIGATION 2020; 67:311-314. [PMID: 33148907 DOI: 10.2152/jmi.67.311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The purpose of this study is to examine the effect of intranasal corticosteroid (INCS) administration on histamine H1 receptor (H1R) gene expression in the nasal mucosa of healthy participants and the effects of dexamethasone on basal and histamine-induced H1R mRNA expression, and histamine-induced phosphorylation of extracellular signal-regulated kinase (ERK) in HeLa cells. Sixteen healthy participants were given INCS once daily for a week. After pretreatment of dexamethasone, HeLa cells were treated with histamine. Levels of H1R mRNA and phosphorylation of ERK were measured using real time PCR and immunoblot analysis, respectively. Levels of H1R mRNA in the nasal mucosa of healthy participants receiving INCS was significantly decreased. Dexamethasone suppressed basal levels of H1R mRNA, and histamine-induced up-regulation of H1R mRNA and ERK phosphorylation in HeLa cells. These data suggested that corticosteroid inhibited both basal transcription and histamine-induced transcriptional activation of H1R through its suppression of ERK phosphorylation in the signaling pathway involved in H1R gene transcription. It is further suggested that pre-seasonal prophylactic administration of INCS suppresses both basal and pollen-induced upregulation of H1R gene expression in the nasal mucosa of patients with pollinosis, leading to prevention of the exacerbation of nasal symptoms during peak pollen season. J. Med. Invest. 67 : 311-314, August, 2020.
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Affiliation(s)
- Yoshiaki Kitamura
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Seiichiro Kamimura
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Tatsuya Fujii
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan
| | - Keisuke Naito
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Eiji Kondo
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kazunori Matsuda
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Takahiro Azuma
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Go Sato
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hiroyuki Fukui
- Departments of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Noriaki Takeda
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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14
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Mizuguchi H, Wakugawa T, Sadakata H, Kamimura S, Takemoto M, Nakagawa T, Yabumoto M, Kitamura Y, Takeda N, Fukui H. Elucidation of Inverse Agonist Activity of Bilastine. Pharmaceutics 2020; 12:pharmaceutics12060525. [PMID: 32521742 PMCID: PMC7355758 DOI: 10.3390/pharmaceutics12060525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 12/29/2022] Open
Abstract
H1-antihistamines antagonize histamine and prevent it from binding to the histamine H1 receptor (H1R). Some of them also act as inverse agonists, which are more potent than pure antagonists because they suppress the constitutive H1R activity. Bilastine is a non-sedative antihistamine which is one of the most satisfy the requirements for oral antihistamines. However, there is no information to show the inverse agonist activity of bilastine including inositol phosphates accumulation, and its inverse agonist activity is yet to be elucidated. Here we evaluated whether bilastine has inverse agonist activity or not. Intracellular calcium concentration was measured using Fluo-8. Inositol phosphates accumulation was assayed using [3H]myo-inositol. The H1R mRNA level was measured using real-time RT-PCR. At rest, Ca2+ oscillation was observed, indicating that H1R has intrinsic activity. Bilastine attenuated this fluorescence oscillation. Bilastine suppressed the increase in IPs formation in a dose-dependent manner and it was about 80% of the control level at the dose of 3 μM. Bilastine also suppressed histamine-induced increase in IPs formation to the control level. Furthermore, bilastine suppressed basal H1R gene expression in a dose-dependent manner. Data suggest that bilastine is an inverse agonist. Preseasonal prophylactic administration with bilastine could down-regulate basal H1R gene expression in the nasal mucosa and ameliorate the nasal symptoms during the peak pollen period.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Laboratory of Pharmacology Faculty of Pharmacy Osaka Ohtani University, Osaka 584-8540, Japan; (M.T.); (T.N.)
- Correspondence: ; Tel.: +81-721-24-9462
| | - Tomoharu Wakugawa
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan;
| | | | - Seiichiro Kamimura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan; (S.K.); (Y.K.); (N.T.); (H.F.)
| | - Mai Takemoto
- Laboratory of Pharmacology Faculty of Pharmacy Osaka Ohtani University, Osaka 584-8540, Japan; (M.T.); (T.N.)
| | - Tomomi Nakagawa
- Laboratory of Pharmacology Faculty of Pharmacy Osaka Ohtani University, Osaka 584-8540, Japan; (M.T.); (T.N.)
| | | | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan; (S.K.); (Y.K.); (N.T.); (H.F.)
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan; (S.K.); (Y.K.); (N.T.); (H.F.)
| | - Hiroyuki Fukui
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan; (S.K.); (Y.K.); (N.T.); (H.F.)
- Medical Corporation Kinshukai, Osaka 558-0011, Japan;
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15
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Nakano T, Ikeda M, Wakugawa T, Kashiwada Y, Kaminuma O, Kitamura N, Yabumoto M, Fujino H, Kitamura Y, Fukui H, Takeda N, Mizuguchi H. Identification of pyrogallol from Awa-tea as an anti-allergic compound that suppresses nasal symptoms and IL-9 gene expression. THE JOURNAL OF MEDICAL INVESTIGATION 2020; 67:289-297. [PMID: 33148904 DOI: 10.2152/jmi.67.289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
As the expression level of allergic disease sensitive genes are correlated with the severity of allergic symptoms, suppression of these gene expressions could be promising therapeutics. We demonstrated that protein kinase Cδ / heat shock protein 90-mediated H1R gene expression signaling and nuclear factor of activated T-cells (NFAT)-mediated IL-9 gene expression signaling are responsible for the pathogenesis of pollinosis. Treatment with Awa-tea combined with wild grape hot water extract suppressed these signaling and alleviated nasal symptoms in toluene-2,4-diisocyanate (TDI)-sensitized rats. However, the underlying mechanism of its anti-allergic activity is not elucidated yet. Here, we sought to identify an anti-allergic compound from Awa-tea and pyrogallol was identified as an active compound. Pyrogallol strongly suppressed ionomycin-induced up-regulation of IL-9 gene expression in RBL-2H3 cells. Treatment with pyrogallol in combination with epinastine alleviated nasal symptoms and suppressed up-regulation of IL-9 gene expression in TDI-sensitized rats. Pyrogallol itself did not inhibit calcineurin phosphatase activity. However, pyrogallol suppressed ionomycin-induced dephosphorylation and nuclear translocation of NFAT. These data suggest pyrogallol is an anti-allergic compound in Awa-tea and it suppressed NFAT-mediated IL-9 gene expression through the inhibition of dephosphorylation of NFAT. This might be the underlying mechanism of the therapeutic effects of combined therapy of pyrogallol with antihistamine. J. Med. Invest. 67 : 289-297, August, 2020.
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Affiliation(s)
- Tomohiro Nakano
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Mitsuhiro Ikeda
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Tomoharu Wakugawa
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yoshiki Kashiwada
- Department of Pharmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Osamu Kaminuma
- Department of Disease Model Research Institute of Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8553, Japan
| | - Noriko Kitamura
- Allergy and Immunology Project, The Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | | | - Hiromichi Fujino
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yoshiaki Kitamura
- Department of Otolalyngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Fukui
- Medical Corporation Kinshukai, Osaka 558-0011, Japan.,Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka 584-8540, Japan
| | - Noriaki Takeda
- Department of Otolalyngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka 584-8540, Japan
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Barbosa-Méndez S, Salazar-Juarez A. Melatonin does not produce sedation in rats: A chronobiological study. Chronobiol Int 2019; 37:353-374. [DOI: 10.1080/07420528.2019.1702554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Susana Barbosa-Méndez
- Molecular Neurobiology and Neurochemistry of Addiction, Ramón de la Fuente Muñiz National Institute of Psychiatry, Ciudad de México, México
| | - Alberto Salazar-Juarez
- Molecular Neurobiology and Neurochemistry of Addiction, Ramón de la Fuente Muñiz National Institute of Psychiatry, Ciudad de México, México
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17
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Kim JE, Kang TC. PKC, AKT and ERK1/2-Mediated Modulations of PARP1, NF-κB and PEA15 Activities Distinctly Regulate Regional Specific Astroglial Responses Following Status Epilepticus. Front Mol Neurosci 2019; 12:180. [PMID: 31396050 PMCID: PMC6667551 DOI: 10.3389/fnmol.2019.00180] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/09/2019] [Indexed: 01/04/2023] Open
Abstract
Status epilepticus (SE, a prolonged seizure activity) leads to reactive astrogliosis and astroglial apoptosis in the regional specific manners, independent of hemodynamics. Poly(ADP-ribose) polymerase-1 (PARP1) activity is relevant to these distinct astroglial responses. Since various regulatory signaling molecules beyond PARP1 activity may be involved in the distinct astroglial response to SE, it is noteworthy to explore the roles of protein kinases in PARP1-mediated reactive astrogliosis and astroglial apoptosis following SE, albeit at a lesser extent. In the present study, inhibitions of protein kinase C (PKC), AKT and extracellular signal-related kinases 1/2 (ERK1/2), but not calcium/calmodulin-dependent protein kinase II (CaMKII), attenuated CA1 reactive astrogliosis accompanied by reducing PARP1 activity following SE, respectively. However, inhibition of AKT and ERK1/2 deteriorated SE-induced dentate astroglial loss concomitant with the diminished PARP1 activity. Following SE, PKC- and AKT inhibitors diminished phosphoprotein enriched in astrocytes of 15 kDa (PEA15)-S104 and -S116 phosphorylations in CA1 astrocytes, but not in dentate astrocytes, respectively. Inhibitors of PKC, AKT and ERK1/2 also abrogated SE-induced nuclear factor-κB (NF-κB)-S311 and -S468 phosphorylations in CA1 astrocytes. In contrast, both AKT and ERK1/2 inhibitors enhanced NF-κB-S468 phosphorylation in dentate astrocytes. Furthermore, PARP1 inhibitor aggravated dentate astroglial loss following SE. AKT inhibition deteriorated dentate astroglial loss and led to CA1 astroglial apoptosis following SE, which were ameliorated by AKT activation. These findings suggest that activities of PARP1, PEA15 and NF-κB may be distinctly regulated by PKC, AKT and ERK1/2, which may be involved in regional specific astroglial responses following SE.
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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
| | - Tae-Cheon Kang
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon, South Korea
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18
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Islam R, Mizuguchi H, Shaha A, Nishida K, Yabumoto M, Ikeda H, Fujino H, Kitamura Y, Fukui H, Takeda N. Effect of wild grape on the signaling of histamine H 1 receptor gene expression responsible for the pathogenesis of allergic rhinitis. THE JOURNAL OF MEDICAL INVESTIGATION 2019; 65:242-250. [PMID: 30282868 DOI: 10.2152/jmi.65.242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
As expression level of allergic disease-sensitive genes are correlated with allergic symptom severity, suppression of these gene expressions could be good therapeutics. We have demonstrated that PKCδ signaling and NFAT signaling, involve in histamine H1 receptor (H1R) and IL-9 gene expressions, respectively, are responsible for the pathogenesis of allergic rhinitis. We explore anti-allergic compounds that suppress these signaling pathways and found that wild grape (WG) contains such compounds. Here, we investigated the effect of WG hot water extract (WGE) on the signaling pathways for PKCδ-mediated H1R and NFAT-mediated IL-9 gene expressions. WGE suppressed histamine/PMA-induced H1R gene up-regulation in HeLa cells. Toluene-2,4-diisocyanate (TDI)-induced H1R mRNA elevation in TDI-sensitized rats was also suppressed by WGE treatment. Treatment with WGE in combination with Awa-tea, suppresses NFAT signaling-mediated IL-9 gene, markedly alleviated nasal symptoms. Furthermore, WGE suppressed PMA-induced IL-33 gene up-regulation in Swiss 3T3 cells. Data suggest that combination of WGE, suppresses PKCδ signaling with Awa-tea, suppresses NFAT signaling would have distinct clinical and therapeutic advantages as a substitute for anti-allergic drugs. In addition, as the expression level of IL-33 mRNA was correlated with the blood eosinophils number in patients with pollinosis, WG could alleviate eosinophilic inflammation through the suppression of IL-33 gene expression. J. Med. Invest. 65:242-250, August, 2018.
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Affiliation(s)
- Rezwanul Islam
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Aurpita Shaha
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Kohei Nishida
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | | | - Hiromichi Fujino
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
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Shaha A, Mizuguchi H, Kitamura Y, Fujino H, Yabumoto M, Takeda N, Fukui H. Effect of Royal Jelly and Brazilian Green Propolis on the Signaling for Histamine H 1 Receptor and Interleukin-9 Gene Expressions Responsible for the Pathogenesis of the Allergic Rhinitis. Biol Pharm Bull 2018; 41:1440-1447. [PMID: 30175778 DOI: 10.1248/bpb.b18-00325] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The significant correlation between nasal symptom scores and level of histamine H1 receptor (H1R) mRNA in nasal mucosa was observed in patients with pollinosis, suggesting that H1R gene is an allergic disease sensitive gene. We demonstrated that H1R and interleukin (IL)-9 gene are the allergic rhinitis (AR)-sensitive genes and protein kinase Cδ (PKCδ) signaling and nuclear factor of activated T-cells (NFAT) signaling are involved in their expressions, respectively. Honey bee products have been used to treat allergic diseases. However, their pathological mechanism remains to be elucidated. In the present study, we investigated the mechanism of the anti-allergic effect of royal jelly (RJ) and Brazilian green propolis (BGPP). Treatment with RJ and BGPP decreased in the number of sneezing on toluene 2,4-diissocyanate (TDI)-stimulated rats. The remarkable suppression of H1R mRNA in nasal mucosa was observed. RJ and BGPP also suppressed the expression of IL-9 gene. RJ and BGPP suppressed phorbol-12-myristate-13-acetate-induced Tyr311 phosphorylation of PKCδ in HeLa cells. In RBL-2H3 cells, RJ and BGPP also suppressed NFAT-mediated IL-9 gene expression. These results suggest that RJ and BGPP improve allergic symptoms by suppressing PKCδ and NFAT signaling pathways, two important signal pathways for the AR pathogenesis, and suggest that RJ and BGPP could be good therapeutics against AR.
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Affiliation(s)
- Aurpita Shaha
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Hiromichi Fujino
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School
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20
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Fujii T, Kitamura Y, Mizuguchi H, Okamoto K, Sanada N, Yamada T, Sugiyama M, Michinaga S, Kitayama M, Fukui H, Takeda N. Effects of irradiation with narrowband-ultraviolet B on up-regulation of histamine H 1 receptor mRNA and induction of apoptosis in HeLa cells and nasal mucosa of rats. J Pharmacol Sci 2018; 138:54-62. [PMID: 30301597 DOI: 10.1016/j.jphs.2018.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 08/21/2018] [Accepted: 08/28/2018] [Indexed: 01/01/2023] Open
Abstract
Narrowband-ultraviolet B (NB-UVB) phototherapy is used for the treatment of atopic dermatitis. Previously, we reported that irradiation with 200 mJ/cm2 of 310 nm NB-UVB suppressed phorbol-12-myristate-13-acetate (PMA)-induced up-regulation of histamine H1 receptor (H1R) gene expression without induction of apoptosis in HeLa cells. However, the effect of NB-UVB irradiation on nasal symptoms is still unclear. Here, we show that low dose irradiation with 310 nm NB-UVB alleviates nasal symptoms in toluene 2,4-diisocyanate (TDI)-sensitized allergy model rats. Irradiation with 310 nm NB-UVB suppressed PMA-induced H1R mRNA up-regulation in HeLa cells dose-dependently at doses of 75-200 mJ/cm2 and reversibly at a dose of 150 mJ/cm2 without induction of apoptosis. While, at doses of more than 200 mJ/cm2, irradiation with 310 nm NB-UVB induced apoptosis. Western blot analysis showed that the suppressive effect of NB-UVB irradiation on H1R gene expression was through the inhibition of ERK phosphorylation. In TDI-sensitized rat, intranasal irradiation with 310 nm NB-UVB at an estimated dose of 100 mJ/cm2 once a day for three days suppressed TDI-induced sneezes and up-regulation of H1R mRNA in nasal mucosa without induction of apoptosis. These findings suggest that repeated intranasal irradiation with low dose of NB-UVB could be clinically used as phototherapy of AR.
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Affiliation(s)
- Tatsuya Fujii
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan.
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, 584-8540, Japan
| | - Kentaro Okamoto
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Nanae Sanada
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Takuya Yamada
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan; Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Manabu Sugiyama
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Shotaro Michinaga
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, 584-8540, Japan
| | - Mika Kitayama
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Fukui
- Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
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21
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Razali NA, Nazarudin NA, Lai KS, Abas F, Ahmad S. Curcumin derivative, 2,6-bis(2-fluorobenzylidene)cyclohexanone (MS65) inhibits interleukin-6 production through suppression of NF-κB and MAPK pathways in histamine-induced human keratinocytes cell (HaCaT). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:217. [PMID: 30012134 PMCID: PMC6048808 DOI: 10.1186/s12906-018-2223-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/27/2018] [Indexed: 12/29/2022]
Abstract
Background Histamine is a well-known mediator involved in skin allergic responses through up-regulation of pro-inflammatory cytokines. Antihistamines remain the mainstay of allergy treatment, but they were found limited in efficacy and associated with several common side effects. Therefore, alternative therapeutic preferences are derived from natural products in an effort to provide safe yet reliable anti-inflammatory agents. Curcumin and their derivatives are among compounds of interest in natural product research due to numerous pharmacological benefits including anti-inflammatory activities. Here, we investigate the effects of chemically synthesized curcumin derivative, 2,6-bis(2-fluorobenzylidene)cyclohexanone (MS65), in reducing cytokine production in histamine-induced HaCaT cells. Methods Interleukin (IL)-6 cytokine production in histamine-induced HaCaT cells were measured using enzyme-linked immunosorbent assay (ELISA) and cytotoxicity effects were determined using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Real-time polymerase chain reaction (RT-qPCR) was carried out to determine the inhibitory effects of MS65 on nuclear factor-kappa B (NF-κB) and mitogen activated protein kinase (MAPK) pathways. Results Histamine enhanced IL-6 production in HaCaT cells, with the highest production of IL-6 at 97.41 ± 2.33 pg/mL after 24 h of exposure. MS65 demonstrated a promising anti-inflammatory activity by inhibiting IL-6 production with half maximal inhibitory concentration (IC50) value of 4.91 ± 2.50 μM and median lethal concentration (LC50) value of 28.82 ± 7.56 μM. In gene expression level, we found that MS65 inhibits NF-κB and MAPK pathways through suppression of IKK/IκB/NFκB and c-Raf/MEK/ERK inflammatory cascades. Conclusion Taken together, our results suggest that MS65 could be used as a lead compound on developing new medicinal agent for the treatment of allergic skin diseases.
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Ganesh BP, Hall A, Ayyaswamy S, Nelson JW, Fultz R, Major A, Haag A, Esparza M, Lugo M, Venable S, Whary M, Fox JG, Versalovic J. Diacylglycerol kinase synthesized by commensal Lactobacillus reuteri diminishes protein kinase C phosphorylation and histamine-mediated signaling in the mammalian intestinal epithelium. Mucosal Immunol 2018; 11:380-393. [PMID: 28745328 PMCID: PMC5785580 DOI: 10.1038/mi.2017.58] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 05/21/2017] [Indexed: 02/04/2023]
Abstract
Lactobacillus reuteri 6475 (Lr) of the human microbiome synthesizes histamine and can suppress inflammation via type 2 histamine receptor (H2R) activation in the mammalian intestine. Gut microbes such as Lr promote H2R signaling and may suppress H1R proinflammatory signaling pathways in parallel by unknown mechanisms. In this study, we identified a soluble bacterial enzyme known as diacylglycerol kinase (Dgk) from Lr that is secreted into the extracellular milieu and presumably into the intestinal lumen. DgK diminishes diacylglycerol (DAG) quantities in mammalian cells by promoting its metabolic conversion and causing reduced protein kinase C phosphorylation (pPKC) as a net effect in mammalian cells. We demonstrated that histamine synthesized by gut microbes (Lr) activates both mammalian H1R and H2R, but Lr-derived Dgk suppresses the H1R signaling pathway. Phospho-PKC and IκBα were diminished within the intestinal epithelium of mice and humans treated by wild-type (WT) Lr, but pPKC and IκBα were not decreased in treatment with ΔdgkA Lr. Mucosal IL-6 and systemic interleukin (IL)-1α, eotaxin, and granulocyte colony-stimulating factor (G-CSF) were suppressed in WT Lr, but not in ΔdgkA Lr colonized mice. Collectively, the commensal microbe Lr may act as a "microbial antihistamine" by suppressing intestinal H1R-mediated proinflammatory responses via diminished pPKC-mediated mammalian cell signaling.
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Affiliation(s)
- Bhanu Priya Ganesh
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA,Division of Comparative Medicine, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA,Corresponding author: Bhanu Priya Ganesh,
| | - Anne Hall
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Sriram Ayyaswamy
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - James Willard Nelson
- Graduate Program in Integrative Molecular and Biomedical Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Robert Fultz
- Department of Pathology, Texas Children’s Hospital, Houston, TX, USA,Graduate Program in Integrative Molecular and Biomedical Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Angela Major
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Anthony Haag
- Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Magdalena Esparza
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Monica Lugo
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Susan Venable
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
| | - Mark Whary
- Division of Comparative Medicine, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James G. Fox
- Division of Comparative Medicine, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James Versalovic
- Departments of Pathology & Immunology, Baylor College of Medicine, Houston, TX, USA,Department of Pathology, Texas Children’s Hospital, Houston, TX, USA
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23
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Miura T, Kume M, Kawamura T, Yamamoto K, Hamakubo T, Nishihara S. O-GlcNAc on PKCζ Inhibits the FGF4-PKCζ-MEK-ERK1/2 Pathway via Inhibition of PKCζ Phosphorylation in Mouse Embryonic Stem Cells. Stem Cell Reports 2017; 10:272-286. [PMID: 29249667 PMCID: PMC5768893 DOI: 10.1016/j.stemcr.2017.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 11/13/2017] [Accepted: 11/13/2017] [Indexed: 12/11/2022] Open
Abstract
Mouse embryonic stem cells (ESCs) differentiate into multiple cell types during organismal development. Fibroblast growth factor 4 (FGF4) signaling induces differentiation from ESCs via the phosphorylation of downstream molecules such as mitogen-activated protein kinase/extracellular signal-related kinase (MEK) and extracellular signal-related kinase 1/2 (ERK1/2). The FGF4-MEK-ERK1/2 pathway is inhibited to maintain ESCs in the undifferentiated state. However, the inhibitory mechanism of the FGF4-MEK-ERK1/2 pathway in ESCs is uncharacterized. O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) is a post-translational modification characterized by the attachment of a single N-acetylglucosamine (GlcNAc) to the serine and threonine residues of nuclear or cytoplasmic proteins. Here, we showed that the O-GlcNAc on the phosphorylation site of PKCζ inhibits PKCζ phosphorylation (activation) and, consequently, the FGF4-PKCζ-MEK-ERK1/2 pathway in ESCs. Our results demonstrate the mechanism for the maintenance of the undifferentiated state of ESCs via the inhibition of the FGF4-PKCζ-MEK-ERK1/2 pathway by O-GlcNAcylation on PKCζ. PKCζ activates the MEK-ERK1/2 pathway by FGF4 stimulation O-GlcNAc on the phosphorylation site of PKCζ inhibits PKCζ activation in ESCs FGF4-PKCζ-MEK-ERK1/2 pathway is inhibited by O-GlcNAc on PKCζ in ESCs
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Affiliation(s)
- Taichi Miura
- Department of Bioinformatics, Graduate School of Engineering, Soka University, 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan; National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Masahiko Kume
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Takeshi Kawamura
- Department of Molecular Biology and Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
| | - Kazuo Yamamoto
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Takao Hamakubo
- Department of Molecular Biology and Medicine, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
| | - Shoko Nishihara
- Department of Bioinformatics, Graduate School of Engineering, Soka University, 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan.
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24
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Yamamoto K, Mizuguchi H, Tokashiki N, Kobayashi M, Tamaki M, Sato Y, Fukui H, Yamauchi A. Protein kinase C-δ signaling regulates glucagon secretion from pancreatic islets. THE JOURNAL OF MEDICAL INVESTIGATION 2017; 64:122-128. [PMID: 28373608 DOI: 10.2152/jmi.64.122] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Accumulating evidence supports the "glucagonocentric hypothesis", in which antecedent α-cell failure and inhibition of glucagon secretion are responsible for diabetes progression. Protein kinase C (PKC) is involved in glucagon secretion from α-cells, although which PKC isozyme is involved and the mechanism underlying this PKC-regulated glucagon secretion remains unknown. Here, the involvement of PKCδ in the onset and progression of diabetes was elucidated. Immunofluorescence studies revealed that PKCδ was expressed and activated in α-cells of STZ-induced diabetic model mice. Phorbol 12-myristate 13-acetate (PMA) stimulation significantly augmented glucagon secretion from isolated islets. Pre-treatment with quercetin and rottlerin, PKCδ signaling inhibitors, significantly suppressed the PMA-induced elevation of glucagon secretion. While Go6976, a Ca2+-dependent PKC selective inhibitor did not suppress glucagon secretion. Quercetin suppressed PMA-induced phosphorylation of Tyr311 of PKCδ in isolated islets. However, quercetin itself had no effect on either glucagon secretion or glucagon mRNA expression. Our data suggest that PKCδ signaling inhibitors suppressed glucagon secretion. Elucidation of detailed signaling pathways causing PKCδ activation in the onset and progression of diabetes followed by the augmentation of glucagon secretion could lead to the identification of novel therapeutic target molecules and the development of novel therapeutic drugs for diabetes. J. Med. Invest. 64: 122-128, February, 2017.
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Affiliation(s)
- Kiyotake Yamamoto
- Department of Pharmaceutical Information Science, Institute of Biomedical Sciences, Tokushima University Graduate School
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25
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Fukui H, Mizuguchi H, Nemoto H, Kitamura Y, Kashiwada Y, Takeda N. Histamine H 1 Receptor Gene Expression and Drug Action of Antihistamines. Handb Exp Pharmacol 2017; 241:161-169. [PMID: 27885525 DOI: 10.1007/164_2016_14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The upregulation mechanism of histamine H1 receptor through the activation of protein kinase C-δ (PKCδ) and the receptor gene expression was discovered. Levels of histamine H1 receptor mRNA and IL-4 mRNA in nasal mucosa were elevated by the provocation of nasal hypersensitivity model rats. Pretreatment with antihistamines suppressed the elevation of mRNA levels. Scores of nasal symptoms were correlatively alleviated to the suppression level of mRNAs above. A correlation between scores of nasal symptoms and levels of histamine H1 receptor mRNA in the nasal mucosa was observed in patients with pollinosis. Both scores of nasal symptoms and the level of histamine H1 receptor mRNA were improved by prophylactic treatment of antihistamines. Similar to the antihistamines, pretreatment with antiallergic natural medicines showed alleviation of nasal symptoms with correlative suppression of gene expression in nasal hypersensitivity model rats through the suppression of PKCδ. Similar effects of antihistamines and antiallergic natural medicines support that histamine H1 receptor-mediated activation of histamine H1 receptor gene expression is an important signaling pathway for the symptoms of allergic diseases. Antihistamines with inverse agonist activity showed the suppression of constitutive histamine H1 receptor gene expression, suggesting the advantage of therapeutic effect.
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Affiliation(s)
- Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Fujii Memorial Institute of Medical Science, Tokushima University Graduate School, 3-18-15 Kuramotocho, Tokushima, 770-8503, Japan.
| | - Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8505, Japan
| | - Hisao Nemoto
- Department of Pharmaceutical Chemistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8505, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology and Communicative Neuroscience, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
| | - Yoshiki Kashiwada
- Department of Pharmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8505, Japan
| | - Noriaki Takeda
- Department of Otolaryngology and Communicative Neuroscience, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
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26
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Jain R, Watson U, Saini DK. ERK activated by Histamine H1 receptor is anti-proliferative through spatial restriction in the cytosol. Eur J Cell Biol 2016; 95:623-634. [DOI: 10.1016/j.ejcb.2016.10.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/04/2016] [Accepted: 10/24/2016] [Indexed: 10/20/2022] Open
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27
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The Anti-Cancer Effect of Polyphenols against Breast Cancer and Cancer Stem Cells: Molecular Mechanisms. Nutrients 2016; 8:nu8090581. [PMID: 27657126 PMCID: PMC5037565 DOI: 10.3390/nu8090581] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 08/25/2016] [Accepted: 09/09/2016] [Indexed: 02/07/2023] Open
Abstract
The high incidence of breast cancer in developed and developing countries, and its correlation to cancer-related deaths, has prompted concerned scientists to discover novel alternatives to deal with this challenge. In this review, we will provide a brief overview of polyphenol structures and classifications, as well as on the carcinogenic process. The biology of breast cancer cells will also be discussed. The molecular mechanisms involved in the anti-cancer activities of numerous polyphenols, against a wide range of breast cancer cells, in vitro and in vivo, will be explained in detail. The interplay between autophagy and apoptosis in the anti-cancer activity of polyphenols will also be highlighted. In addition, the potential of polyphenols to target cancer stem cells (CSCs) via various mechanisms will be explained. Recently, the use of natural products as chemotherapeutics and chemopreventive drugs to overcome the side effects and resistance that arise from using chemical-based agents has garnered the attention of the scientific community. Polyphenol research is considered a promising field in the treatment and prevention of breast cancer.
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28
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Andersson A, Bluwstein A, Kumar N, Teloni F, Traenkle J, Baudis M, Altmeyer M, Hottiger MO. PKCα and HMGB1 antagonistically control hydrogen peroxide-induced poly-ADP-ribose formation. Nucleic Acids Res 2016; 44:7630-45. [PMID: 27198223 PMCID: PMC5027479 DOI: 10.1093/nar/gkw442] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 05/06/2016] [Indexed: 12/20/2022] Open
Abstract
Harmful oxidation of proteins, lipids and nucleic acids is observed when reactive oxygen species (ROS) are produced excessively and/or the antioxidant capacity is reduced, causing ‘oxidative stress’. Nuclear poly-ADP-ribose (PAR) formation is thought to be induced in response to oxidative DNA damage and to promote cell death under sustained oxidative stress conditions. However, what exactly triggers PAR induction in response to oxidative stress is incompletely understood. Using reverse phase protein array (RPPA) and in-depth analysis of key stress signaling components, we observed that PAR formation induced by H2O2 was mediated by the PLC/IP3R/Ca2+/PKCα signaling axis. Mechanistically, H2O2-induced PAR formation correlated with Ca2+-dependent DNA damage, which, however, was PKCα-independent. In contrast, PAR formation was completely lost upon knockdown of PKCα, suggesting that DNA damage alone was not sufficient for inducing PAR formation, but required a PKCα-dependent process. Intriguingly, the loss of PAR formation observed upon PKCα depletion was overcome when the chromatin structure-modifying protein HMGB1 was co-depleted with PKCα, suggesting that activation and nuclear translocation of PKCα releases the inhibitory effect of HMGB1 on PAR formation. Together, these results identify PKCα and HMGB1 as important co-regulators involved in H2O2-induced PAR formation, a finding that may have important relevance for oxidative stress-associated pathophysiological conditions.
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Affiliation(s)
- Anneli Andersson
- Department of Molecular Mechanisms of Disease, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland Molecular Life Sciences PhD Program, Life Science Zurich Graduate School, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Andrej Bluwstein
- Department of Molecular Mechanisms of Disease, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland Cancer Biology PhD Program, Life Science Zurich Graduate School, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Nitin Kumar
- Institute of Molecular Life Science (IMLS) and Swiss Institute of Bioinformatics (SIB), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Federico Teloni
- Department of Molecular Mechanisms of Disease, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland Molecular Life Sciences PhD Program, Life Science Zurich Graduate School, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Jens Traenkle
- Bayer Technology Services GmbH, D-51368 Leverkusen, Germany
| | - Michael Baudis
- Institute of Molecular Life Science (IMLS) and Swiss Institute of Bioinformatics (SIB), University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Matthias Altmeyer
- Department of Molecular Mechanisms of Disease, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Michael O Hottiger
- Department of Molecular Mechanisms of Disease, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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30
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Fukui H, Mizuguchi H, Kashiwada Y, Nemoto H, Kitamura Y, Takeda N. [Molecular pharmacology of (-)maackiain, from Kujin, an anti-allergic Kampo medicine]. Nihon Yakurigaku Zasshi 2016; 147:148-151. [PMID: 26960774 DOI: 10.1254/fpj.147.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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31
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Kitamura Y, Mizuguchi H, Okamoto K, Kitayama M, Fujii T, Fujioka A, Matsushita T, Mukai T, Kubo Y, Kubo N, Fukui H, Takeda N. Irradiation with narrowband-ultraviolet B suppresses phorbol ester-induced up-regulation of H1 receptor mRNA in HeLa cells. Acta Otolaryngol 2016; 136:409-13. [PMID: 26824787 DOI: 10.3109/00016489.2015.1129555] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Conclusion These findings suggest that low dose irradiation with 310 nm NB-UVB specifically suppressed the up-regulation of H1R gene expression without inducing apoptosis and that UVB of shorter or longer wavelength than 310 nm NB-UVB had no such effects. Objective To develop a narrowband-ultraviolet B(NB-UVB) phototherapy for allergic rhinitis, this study investigated the effects of irradiation with NB-UVB at wavelength of 310 nm on phorbol-12-myristate-13-acetate (PMA)-induced up-regulation of histamine H1 receptor (H1R) mRNA in HeLa cells. Methods The mRNA levels of H1R in HeLa cells were measured using real-time RT-PCR. Apoptosis were evaluated with DNA fragmentation assay. Results PMA induced a significant increase in H1R mRNA expression in HeLa cells. Irradiation with 305 nm UVB and 310 nm NB-UVB, but not with 315 nm UVB at doses of 200 and 300 mJ/cm(2) significantly suppressed PMA-induced up-regulation of H1R mRNA. At a dose of 200 mJ/cm(2), irradiation with 305 nm UVB, but not with 310 nm NB-UVB, induced apoptosis, although exposure of the cells to both 305 and 310 nm UVB induced apoptosis at a dose of 300 mJ/cm(2) after PMA treatment in HeLa cells. Conversely, irradiation with 315 nm UVB at doses of 200 and 300 mJ/cm(2) did not induce apoptosis.
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Affiliation(s)
- Yoshiaki Kitamura
- a Department of Otolaryngology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Hiroyuki Mizuguchi
- b Department of Molecular Pharmacology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Kentaro Okamoto
- b Department of Molecular Pharmacology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Mika Kitayama
- b Department of Molecular Pharmacology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Tatsuya Fujii
- a Department of Otolaryngology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | | | | | | | - Yoshiaki Kubo
- d Department of Dermatology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Nobuo Kubo
- e Miki Medical Corporation SunField Stem Cell Processing Center , Tokyo , Japan
| | - Hiroyuki Fukui
- f Department of Molecular Studies for Incurable Diseases , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
| | - Noriaki Takeda
- a Department of Otolaryngology , Institute of Medical Biosciences, Tokushima University Graduate School , Tokushima , Japan
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32
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Mizuguchi H, Orimoto N, Kadota T, Kominami T, Das AK, Sawada A, Tamada M, Miyagi K, Adachi T, Matsumoto M, Kosaka T, Kitamura Y, Takeda N, Fukui H. Suplatast tosilate alleviates nasal symptoms through the suppression of nuclear factor of activated T-cells-mediated IL-9 gene expression in toluene-2,4-diisocyanate-sensitized rats. J Pharmacol Sci 2016; 130:151-8. [PMID: 26874672 DOI: 10.1016/j.jphs.2015.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 12/26/2015] [Accepted: 12/28/2015] [Indexed: 10/22/2022] Open
Abstract
Histamine H1 receptor (H1R) gene is upregulated in patients with pollinosis; its expression level is highly correlated with the nasal symptom severity. Antihistamines are widely used as allergy treatments because they inhibit histamine signaling by blocking H1R or suppressing H1R signaling as inverse agonists. However, long-term treatment with antihistamines does not completely resolve toluene-2,4-diisocyanate (TDI)-induced nasal symptoms, although it can decrease H1R gene expression to the basal level, suggesting additional signaling is responsible for the pathogenesis of the allergic symptoms. Here, we show that treatment with suplatast tosilate in combination with antihistamines markedly alleviates nasal symptoms in TDI-sensitized rats. Suplatast suppressed TDI-induced upregulation of IL-9 gene expression. Suplatast also suppressed ionomycin/phorbol-12-myristate-13-acetate-induced upregulation of IL-2 gene expression in Jurkat cells, in which calcineurin (CN)/nuclear factor of activated T-cells (NFAT) signaling is known to be involved. Immunoblot analysis demonstrated that suplatast inhibited binding of NFAT to DNA. Furthermore, suplatast suppressed ionomycin-induced IL-9 mRNA upregulation in RBL-2H3 cells, in which CN/NFAT signaling is also involved. These data suggest that suplatast suppressed NFAT-mediated IL-9 gene expression in TDI-sensitized rats and this might be the underlying mechanism of the therapeutic effects of combined therapy of suplatast with antihistamine.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan.
| | - Naoki Orimoto
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan; Taiho Pharmaceutical Co. LTD., 224-2, Ebisuno Hiraishi, Kawauchi-cho, Tokushima 771-0194, Japan
| | - Takuya Kadota
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Takahiro Kominami
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Asish K Das
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Akiho Sawada
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Misaki Tamada
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Kohei Miyagi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Tsubasa Adachi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Mayumi Matsumoto
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Tomoya Kosaka
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Sho-machi, Tokushima 770-8505, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8503, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8503, Japan
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8503, Japan
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Nariai Y, Mizuguchi H, Ogasawara T, Nagai H, Sasaki Y, Okamoto Y, Yoshimura Y, Kitamura Y, Nemoto H, Takeda N, Fukui H. Disruption of Heat Shock Protein 90 (Hsp90)-Protein Kinase Cδ (PKCδ) Interaction by (-)-Maackiain Suppresses Histamine H1 Receptor Gene Transcription in HeLa Cells. J Biol Chem 2015; 290:27393-27402. [PMID: 26391399 PMCID: PMC4646370 DOI: 10.1074/jbc.m115.657023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 09/10/2015] [Indexed: 12/22/2022] Open
Abstract
The histamine H1 receptor (H1R) gene is an allergic disease sensitive gene, and its expression level is strongly correlated with the severity of allergic symptoms. (-)-Maackiain was identified as a Kujin-derived anti-allergic compound that suppresses the up-regulation of the H1R gene. However, the underlying mechanism of H1R gene suppression remains unknown. Here, we sought to identify a target protein of (-)-maackiain and investigate its mechanism of action. A fluorescence quenching assay and immunoblot analysis identified heat shock protein 90 (Hsp90) as a target protein of (-)-maackiain. A pull-down assay revealed that (-)-maackiain disrupted the interaction of Hsp90 with PKCδ, resulting in the suppression of phorbol 12-myristate 13-acetate (PMA)-induced up-regulation of H1R gene expression in HeLa cells. Additional Hsp90 inhibitors, including 17-(allylamino)-17-demethoxygeldanamycin, celastrol, and novobiocin also suppressed PMA-induced H1R gene up-regulation. 17-(Allylamino)-17-demethoxygeldanamycin inhibited PKCδ translocation to the Golgi and phosphorylation of Tyr(311) on PKCδ. These data suggest that (-)-maackiain is a novel Hsp90 pathway inhibitor. The underlying mechanism of the suppression of PMA-induced up-regulation of H1R gene expression by (-)-maackiain and Hsp90 inhibitors is the inhibition of PKCδ activation through the disruption of Hsp90-PKCδ interaction. Involvement of Hsp90 in H1R gene up-regulation suggests that suppression of the Hsp90 pathway could be a novel therapeutic strategy for allergic rhinitis.
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Affiliation(s)
- Yuki Nariai
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Hiroyuki Mizuguchi
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan.
| | - Takeyasu Ogasawara
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Hiroaki Nagai
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yohei Sasaki
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yasunobu Okamoto
- Departments of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yoshiyuki Yoshimura
- Departments of Clinical Pharmacy, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Yoshiaki Kitamura
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Hisao Nemoto
- Departments of Pharmaceutical Chemistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Noriaki Takeda
- Departments of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
| | - Hiroyuki Fukui
- Departments of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8505, Japan
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Kitamura Y, Nakagawa H, Fujii T, Sakoda T, Enomoto T, Mizuguchi H, Fukui H, Takeda N. Effects of antihistamine on up-regulation of histamine H1 receptor mRNA in the nasal mucosa of patients with pollinosis induced by controlled cedar pollen challenge in an environmental exposure unit. J Pharmacol Sci 2015; 129:183-7. [PMID: 26598006 DOI: 10.1016/j.jphs.2015.10.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/30/2015] [Accepted: 10/19/2015] [Indexed: 11/24/2022] Open
Abstract
In the present study, we examined the effects of antihistamine on the up-regulation of H1R mRNA in the nasal mucosa of patients with pollinosis induced by controlled exposure to pollen using an environmental exposure unit. Out of 20 patients, we designated 14 responders, whose levels of H1R mRNA in the nasal mucosa were increased after the first pollen exposure and excluded 6 non-responders. Accordingly, the first exposure to pollen without treatment significantly induced both nasal symptoms and the up-regulation of H1R mRNA in the nasal mucosa of the responders. Subsequently, prophylactic administration of antihistamine prior to the second pollen exposure significantly inhibited both of the above effects in the responders. Moreover, the nasal expression of H1R mRNA before the second pollen exposure in the responders pretreated with antihistamine was significantly decreased, as compared with that before the first pollen exposure without treatment. These findings suggest that antihistamines suppressed histamine-induced transcriptional activation of H1R gene in the nasal mucosa, in addition to their blocking effect against histamine on H1R, resulting in a decrease of nasal symptoms. These findings further suggest that by their inverse agonistic activity, antihistamines suppress the basal transcription of nasal H1R in the absence of histamine in responders.
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Affiliation(s)
- Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.
| | - Hideyuki Nakagawa
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Tatsuya Fujii
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Takema Sakoda
- Department of Otolaryngology, Rinku General Medical Center, Osaka, Japan
| | - Tadao Enomoto
- NPO Japan Health Promotion Supporting Network, Wakayama, Japan
| | - Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Mizuguchi H, Nariai Y, Kato S, Nakano T, Kanayama T, Kashiwada Y, Nemoto H, Kawazoe K, Takaishi Y, Kitamura Y, Takeda N, Fukui H. Maackiain is a novel antiallergic compound that suppresses transcriptional upregulation of the histamine H1 receptor and interleukin-4 genes. Pharmacol Res Perspect 2015; 3:e00166. [PMID: 26516579 PMCID: PMC4618638 DOI: 10.1002/prp2.166] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 06/10/2015] [Accepted: 06/11/2015] [Indexed: 11/12/2022] Open
Abstract
Kujin contains antiallergic compounds that inhibit upregulation of histamine H1 receptor (H1R) and interleukin (IL)-4 gene expression. However, the underlying mechanism remains unknown. We sought to identify a Kujin-derived antiallergic compound and investigate its mechanism of action. The H1R and IL-4 mRNA levels were determined by real-time quantitative RT-PCR. To investigate the effects of maackiain in vivo, toluene-2,4-diisocyanate (TDI)-sensitized rats were used as a nasal hypersensitivity animal model. We identified (-)-maackiain as the responsible component. Synthetic maackiain showed stereoselectivity for the suppression of IL-4 gene expression but not for H1R gene expression, suggesting distinct target proteins for transcriptional signaling. (-)-Maackiain inhibited of PKCδ translocation to the Golgi and phosphorylation of Tyr(311) on PKCδ, which led to the suppression of H1R gene transcription. However, (-)-maackiain did not show any antioxidant activity or inhibition of PKCδ enzymatic activity per se. Pretreatment with maackiain alleviated nasal symptoms and suppressed TDI-induced upregulations of H1R and IL-4 gene expressions in TDI-sensitized rats. These data suggest that (-)-maackiain is a novel antiallergic compound that alleviates nasal symptoms in TDI-sensitized allergy model rats through the inhibition of H1R and IL-4 gene expression. The molecular mechanism underlying its suppressive effect for H1R gene expression is mediated by the inhibition of PKCδ activation.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Yuki Nariai
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Shuhei Kato
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Tomohiro Nakano
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Tomoyo Kanayama
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Yoshiki Kashiwada
- Department of Pharmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Hisao Nemoto
- Department of Pharmaceutical Chemistry, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Kazuyoshi Kawazoe
- Department of Clinical Pharmacy, Institute of Biomedical Sciences, Tokushima Tokushima University Graduate School3-18-15 Kuramoto, Tokushima, 770-8503, Japan
| | - Yoshihisa Takaishi
- Department of Pharmacognosy, Institute of Biomedical Sciences, Tokushima University Graduate School1-78-1 Sho-machi, Tokushima, 770-8505, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School3-18-15 Kuramoto, Tokushima, 770-8503, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School3-18-15 Kuramoto, Tokushima, 770-8503, Japan
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School3-18-15 Kuramoto, Tokushima, 770-8503, Japan
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Yang D, Hong JH. Dexmedetomidine Modulates Histamine-induced Ca(2+) Signaling and Pro-inflammatory Cytokine Expression. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2015; 19:413-20. [PMID: 26330753 PMCID: PMC4553400 DOI: 10.4196/kjpp.2015.19.5.413] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 05/06/2015] [Accepted: 05/10/2015] [Indexed: 01/22/2023]
Abstract
Dexmedetomidine is a sedative and analgesic agent that exerts its effects by selectively agonizing α2 adrenoceptor. Histamine is a pathophysiological amine that activates G protein-coupled receptors, to induce Ca(2+) release and subsequent mediate or progress inflammation. Dexmedetomidine has been reported to exert inhibitory effect on inflammation both in vitro and in vivo studies. However, it is unclear that dexmedetomidine modulates histamine-induced signaling and pro-inflammatory cytokine expression. This study was carried out to assess how dexmedetomidine modulates histamine-induced Ca(2+) signaling and regulates the expression of pro-inflammatory cytokine genes encoding interleukin (IL)-6 and -8. To elucidate the regulatory role of dexmedetomidine on histamine signaling, HeLa cells and human salivary gland cells which are endogenously expressed histamine 1 receptor were used. Dexmedetomidine itself did not trigger Ca(2+) peak or increase in the presence or absence of external Ca(2+). When cells were stimulated with histamine after pretreatment with various concentrations of dexmedetomidine, we observed inhibited histamine-induced [Ca(2+)]i signal in both cell types. Histamine stimulated IL-6 mRNA expression not IL-8 mRNA within 2 hrs, however this effect was attenuated by dexmedetomidine. Collectively, these findings suggest that dexmedetomidine modulates histamine-induced Ca(2+) signaling and IL-6 expression and will be useful for understanding the antagonistic properties of dexmedetomidine on histamine-induced signaling beyond its sedative effect.
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Affiliation(s)
- Dongki Yang
- Department of Physiology, College of Medicine, Gachon University, Incheon 406-799, Korea
| | - Jeong Hee Hong
- Department of Physiology, College of Medicine, Gachon University, Incheon 406-799, Korea
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Valtcheva MV, Davidson S, Zhao C, Leitges M, Gereau RW. Protein kinase Cδ mediates histamine-evoked itch and responses in pruriceptors. Mol Pain 2015; 11:1. [PMID: 25558916 PMCID: PMC4298070 DOI: 10.1186/1744-8069-11-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 12/23/2014] [Indexed: 01/28/2023] Open
Abstract
Background Itch-producing compounds stimulate receptors expressed on small diameter fibers that innervate the skin. Many of the currently known pruritogen receptors are Gq Protein-Coupled Receptors (GqPCR), which activate Protein Kinase C (PKC). Specific isoforms of PKC have been previously shown to perform selective functions; however, the roles of PKC isoforms in regulating itch remain unclear. In this study, we investigated the novel PKC isoform PKCδ as an intracellular modulator of itch signaling in response to histamine and the non-histaminergic pruritogens chloroquine and β-alanine. Results Behavioral experiments indicate that PKCδ knock-out (KO) mice have a 40% reduction in histamine-induced scratching when compared to their wild type littermates. On the other hand, there were no differences between the two groups in scratching induced by the MRGPR agonists chloroquine or β-alanine. PKCδ was present in small diameter dorsal root ganglion (DRG) neurons. Of PKCδ-expressing neurons, 55% also stained for the non-peptidergic marker IB4, while a smaller percentage (15%) expressed the peptidergic marker CGRP. Twenty-nine percent of PKCδ-expressing neurons also expressed TRPV1. Calcium imaging studies of acutely dissociated DRG neurons from PKCδ-KO mice show a 40% reduction in the total number of neurons responsive to histamine. In contrast, there was no difference in the number of capsaicin-responsive neurons between KO and WT animals. Acute pharmacological inhibition of PKCδ with an isoform-specific peptide inhibitor (δV1-1) also significantly reduced the number of histamine-responsive sensory neurons. Conclusions Our findings indicate that PKCδ plays a role in mediating histamine-induced itch, but may be dispensable for chloroquine- and β-alanine-induced itch.
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Affiliation(s)
| | | | | | | | - Robert W Gereau
- Washington University Pain Center and Department of Anesthesiology, Washington University in St, Louis, 660 S, Euclid Ave, Box 8054, 63110 St, Louis, MO, USA.
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Gangwar M, Goel RK, Nath G. Mallotus philippinensis Muell. Arg (Euphorbiaceae): ethnopharmacology and phytochemistry review. BIOMED RESEARCH INTERNATIONAL 2014; 2014:213973. [PMID: 25105119 PMCID: PMC4109133 DOI: 10.1155/2014/213973] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 05/02/2014] [Accepted: 05/02/2014] [Indexed: 02/07/2023]
Abstract
Mallotus philippinensis Muell. Arg (Euphorbiaceae) are widely distributed perennial shrub or small tree in tropical and subtropical region in outer Himalayas regions with an altitude below 1,000 m and are reported to have wide range of pharmacological activities. Mallotus philippinensis species are known to contain different natural compounds, mainly phenols, diterpenoids, steroids, flavonoids, cardenolides, triterpenoids, coumarins, isocoumarins, and many more especially phenols; that is, bergenin, mallotophilippinens, rottlerin, and isorottlerin have been isolated, identified, and reported interesting biological activities such as antimicrobial, antioxidant, antiviral, cytotoxicity, antioxidant, anti-inflammatory, immunoregulatory activity protein inhibition against cancer cell. We have selected all the pharmacological aspects and toxicological and all its biological related studies. The present review reveals that Mallotus philippinensis is a valuable source of medicinally important natural molecules and provides convincing support for its future use in modern medicine. However, the existing knowledge is very limited about Mallotus philippinensis and its different parts like steam, leaf, and fruit. Further, more detailed safety data pertaining to the acute and subacute toxicity and cardio- and immunotoxicity also needs to be generated for crude extracts or its pure isolated compounds. This review underlines the interest to continue the study of this genus of the Euphorbiaceae.
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Affiliation(s)
- Mayank Gangwar
- Laboratory of Gastrointestinal Infections and Molecular Diagnosis, Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
- Department of Pharmacology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - R. K. Goel
- Department of Pharmacology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Gopal Nath
- Laboratory of Gastrointestinal Infections and Molecular Diagnosis, Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
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Wang XF, Hu WW, Yan HJ, Tan L, Gao JQ, Tian YY, Shi XJ, Hou WW, Li J, Shen Y, Chen Z. Modulation of astrocytic glutamine synthetase expression and cell viability by histamine in cultured cortical astrocytes exposed to OGD insults. Neurosci Lett 2013; 549:69-73. [DOI: 10.1016/j.neulet.2013.06.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 06/05/2013] [Accepted: 06/09/2013] [Indexed: 10/26/2022]
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Chan TK, Ng DSW, Cheng C, Guan SP, Koh HM, Wong WSF. Anti-allergic actions of rottlerin from Mallotus philippinensis in experimental mast cell-mediated anaphylactic models. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:853-860. [PMID: 23632085 DOI: 10.1016/j.phymed.2013.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/04/2013] [Accepted: 03/09/2013] [Indexed: 05/28/2023]
Abstract
Allergy is an acquired hypersensitivity reaction of the immune system mediated by cross-linking of the allergen-specific IgE-bound high-affinity IgE receptors, leading to immediate mast cell degranulation. Rottlerin is an active molecule isolated from Mallotus philippinensis, a medicinal plant used in Ayurvedic Medicine System for anti-allergic and anti-helminthic treatments. The present study investigated potential anti-allergic effects of rottlerin in animal models of IgE-dependent anaphylaxis and the anti-allergic mechanisms of action of rottlerin in mast cells. Anti-allergic actions of rottlerin were evaluated in passive cutaneous anaphylaxis and passive systemic anaphylaxis mouse models, and in anaphylactic contraction of bronchial rings isolated from sensitized guinea pigs. Direct mast cell-stabilizing effect of rottlerin was examined in RBL-2H3 mast cell line. Anti-allergic signaling mechanisms of action of rottlerin in mast cells were also examined. Rottlerin prevented IgE-mediated cutaneous vascular extravasation, hypothermia, elevation in plasma histamine level and tracheal tissue mast cell degranulation in mice in a dose-dependent manner. In addition, rottlerin suppressed ovalbumin-induced guinea pig bronchial smooth muscle contraction. Furthermore, rottlerin concentration-dependently blocked IgE-mediated immediate release of β-hexosaminidase from RBL-2H3 mast cells. Rottlerin was found to inhibit IgE-induced PLCγ1 and Akt phosphorylation, production of IP3 and rise in cytosolic Ca²⁺ level in mast cells. We report here for the first time that rottlerin possesses anti-allergic activity by blocking IgE-induced mast cell degranulation, providing a foundation for developing rottlerin for the treatment of allergic asthma and other mast cell-mediated allergic disorders.
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Affiliation(s)
- Tze Khee Chan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
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Li LX, Zhang XF, Bai X, Tong Q. SDF-1 promotes ox-LDL induced vascular smooth muscle cell proliferation. Cell Biol Int 2013; 37:988-94. [PMID: 23658061 DOI: 10.1002/cbin.10126] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 04/21/2013] [Indexed: 01/13/2023]
Abstract
The mechanism of the regulatory roles of stromal cell derived factor-1 (SDF-1)/C-X-C motif receptor 4 (CXCR4) on cell proliferation and apoptosis in vascular smooth muscle cells (VSMCs) via the protein kinase C (PKC) and nuclear factor-kappa B (NF-κB) signalling pathways have been investigated. Rat aortic VSMCs were treated with control or an oxidised low-density lipoprotein (ox-LDL) atherosclerosis (AS) model. Cells exposed to the AS model were treated with SDF-1 plus inhibitors specific for PKC (Ro31-8220), CXCR4 (12G5) or NF-κB (pyrrolidine dithiocarbamate, PDTC). Cell proliferation was measured with 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and apoptosis by flow cytometry. NF-κB protein expression was analysed using Western blotting. The proliferation rate in the AS model group was significantly higher than the control group, but lower than the SDF-1 group (P < 0.05). Apoptosis in the AS model group (ox-LDL) was significantly higher than the normal control group (P < 0.05). In addition, the apoptosis rate in the SDF-1 group was significantly lower than the normal control group (P < 0.05); however, there was no difference from the Ro31-8220 group. NF-κB protein expression in the SDF-1 group was significantly higher than the AS model (ox-LDL) group (P < 0.05). In conclusion, SDF-1 can promote the proliferation of VSMCs induced by ox-LDL and inhibit cell apoptosis, via the SDF-1/CXCR4 axis.
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Affiliation(s)
- Ling-Xing Li
- The First Hospital of Jilin University, Changchun, Jilin, China
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42
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Kuroda W, Kitamura Y, Mizuguchi H, Miyamoto Y, Kalubi B, Fukui H, Takeda N. Combination of leukotoriene receptor antagonist with antihistamine has an additive suppressive effect on the up-regulation of H1-receptor mRNA in the nasal mucosa of toluene 2,4-diisocyanate-sensitized rat. J Pharmacol Sci 2013; 122:55-8. [PMID: 23615224 DOI: 10.1254/jphs.12250sc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
An attempt was made to clarify the additive suppressive effects of pranlukast, a cysteinyl leukotriene-receptor (LTR) antagonist, in combination with chlorpheniramine, an antihistamine, on the up-regulation of histamine H1-receptor (H1R) mRNA in toluene 2,4-diisocyanate (TDI)-sensitized rats. Although pre-treatment with pranlukast partially, but significantly, suppressed TDI-induced up-regulation of H1R mRNA and nasal symptoms, pre-treatment with the combination of pranlukast and chlorpheniramine significantly suppressed them in a manner greater than either drug alone. These findings suggest that the additive therapeutic effect of the combination of LTR antagonist and antihistamine is due to their additive suppression of H1R up-regulation.
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Affiliation(s)
- Wakana Kuroda
- Department of Otolaryngology, Institute of Health Biosciences, The University of Tokushima Graduate School, Japan
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Mizuguchi H, Ono S, Hattori M, Sasaki Y, Fukui H. Usefulness of HeLa cells to evaluate inverse agonistic activity of antihistamines. Int Immunopharmacol 2013; 15:539-43. [PMID: 23453703 DOI: 10.1016/j.intimp.2013.02.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 02/06/2013] [Accepted: 02/07/2013] [Indexed: 11/25/2022]
Abstract
Antihistamines are thought to antagonize histamine and prevent it from binding to the histamine H1 receptor (H1R). However, recent studies indicate that antihistamines are classified into two groups, i.e., inverse agonists and neutral antagonists on the basis of their ability to down-regulate the constitutive activity of H1R. As H1R is an allergy-sensitive gene whose expression influences the severity of allergic symptoms, inverse agonists should more potently alleviate allergic symptoms than neutral antagonists by inhibiting H1R constitutive activity. Therefore, it is important to assess inverse agonistic activity of antihistamines. Here we report a novel assay method using HeLa cells expressing H1R endogenously for evaluation of inverse agonistic activity of antihistamines. Pretreatment with inverse agonists down-regulated H1R gene expression below to its basal level. On the other hand, basal H1R mRNA expression was unchanged by neutral antagonist pretreatment. Both inverse agonists and neutral antagonists suppressed histamine-induced H1R mRNA elevation. Classification of antihistamines on the basis of their suppressive activity of basal H1R gene expression was consistent with that of inositol phosphate accumulation in H1R-overexpressed cells. Our data suggest that the assay method using HeLa cells is more convenient and useful than the existing methods and may contribute to develop new antihistamines with inverse agonistic activity.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8505, Japan
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Hattori M, Mizuguchi H, Baba Y, Ono S, Nakano T, Zhang Q, Sasaki Y, Kobayashi M, Kitamura Y, Takeda N, Fukui H. Quercetin inhibits transcriptional up-regulation of histamine H1 receptor via suppressing protein kinase C-δ/extracellular signal-regulated kinase/poly(ADP-ribose) polymerase-1 signaling pathway in HeLa cells. Int Immunopharmacol 2013; 15:232-9. [PMID: 23333628 DOI: 10.1016/j.intimp.2012.12.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 12/29/2012] [Accepted: 12/31/2012] [Indexed: 11/29/2022]
Abstract
It has been reported that the histamine H1 receptor (H1R) gene is up-regulated in patients with allergic rhinitis and H1R expression level strongly correlates with the severity of allergy symptoms. Accordingly compounds that suppress the H1R gene expression are promising as useful anti-allergic medications. Recently, we demonstrated that histamine or phorbol-12-myristate-13-acetate (PMA) stimulation induced the up-regulation of H1R gene expression through the protein kinase Cδ (PKCδ)/extracellular signal-regulated kinase/poly(ADP-ribose) polymerase-1 signaling pathway in HeLa cells expressing H1R endogenously. Quercetin is one of the well-characterized flavonoids and it possesses many biological activities including anti-allergic activity. However, effect of quercetin on H1R signaling is remained unknown. In the present study, we examined the effect of quercetin on histamine- and PMA-induced up-regulation of H1R gene expression in HeLa cells. We also investigated its in vivo effects on the toluene-2,4-diisocyanate (TDI)-sensitized allergy model rats. Quercetin suppressed histamine- and PMA-induced up-regulation of H1R gene expression. Quercetin also inhibited histamine- or PMA-induced phosphorylation of Tyr(311) of PKCδ and translocation of PKCδ to the Golgi. Pre-treatment with quercetin for 3weeks suppressed TDI-induced nasal allergy-like symptoms and elevation of H1R mRNA in the nasal mucosa of TDI-sensitized rats. These data suggest that quercetin suppresses H1R gene expression by the suppression of PKCδ activation through the inhibition of its translocation to the Golgi.
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Affiliation(s)
- Masashi Hattori
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8505, Japan
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Seifert R, Strasser A, Schneider EH, Neumann D, Dove S, Buschauer A. Molecular and cellular analysis of human histamine receptor subtypes. Trends Pharmacol Sci 2013; 34:33-58. [PMID: 23254267 PMCID: PMC3869951 DOI: 10.1016/j.tips.2012.11.001] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 11/03/2012] [Accepted: 11/05/2012] [Indexed: 01/08/2023]
Abstract
The human histamine receptors hH(1)R and hH(2)R constitute important drug targets, and hH(3)R and hH(4)R have substantial potential in this area. Considering the species-specificity of pharmacology of H(x)R orthologs, it is important to analyze hH(x)Rs. Here, we summarize current knowledge of hH(x)Rs endogenously expressed in human cells and hH(x)Rs recombinantly expressed in mammalian and insect cells. We present the advantages and disadvantages of the various systems. We also discuss problems associated with the use of hH(x)R antibodies, an issue of general relevance for G-protein-coupled receptors (GPCRs). There is much greater overlap in activity of 'selective' ligands for other hH(x)Rs than the cognate receptor subtype than generally appreciated. Studies with native and recombinant systems support the concept of ligand-specific receptor conformations, encompassing agonists and antagonists. It is emerging that for characterization of hH(x)R ligands, one cannot rely on a single test system and a single parameter. Rather, multiple systems and parameters have to be studied. Although such studies are time-consuming and expensive, ultimately, they will increase drug safety and efficacy.
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Affiliation(s)
- Roland Seifert
- Institute of Pharmacology, Medical School of Hannover, Hannover, Germany.
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Mizuguchi H, Miyagi K, Terao T, Sakamoto N, Yamawaki Y, Adachi T, Ono S, Sasaki Y, Yoshimura Y, Kitamura Y, Takeda N, Fukui H. PMA-induced dissociation of Ku86 from the promoter causes transcriptional up-regulation of histamine H(1) receptor. Sci Rep 2012; 2:916. [PMID: 23209876 PMCID: PMC3512088 DOI: 10.1038/srep00916] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/24/2012] [Indexed: 12/05/2022] Open
Abstract
Histamine H1 receptor (H1R) gene is up-regulated in patients with allergic rhinitis, and its expression level strongly correlates with the severity of symptoms. However, the mechanism underlying this remains unknown. Here we report the mechanism of H1R gene up-regulation. The luciferase assay revealed the existence of two promoter regions, A and B1. Two AP-1 and one Ets-1 bound to region A, while Ku86, Ku70, and PARP-1 bound to region B1. Ku86 was responsible for DNA binding and poly(ADP-ribosyl)ated in response to phorbol-12-myristate-13-acetate stimulation, inducing its dissociation from region B1 that is crucial for promoter activity. Knockdown of Ku86 gene enhanced up-regulation of H1R gene expression. Experiments using inhibitors for MEK and PARP-1 indicate that regions A and B1 are downstream regulatory elements of the PKCδ/ERK/PARP-1 signaling pathway. Data suggest a novel mechanism for the up-regulation of H1R gene expression.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8505, Japan
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Prognostic value of histamine H1 receptor expression in oral squamous cell carcinoma. Clin Oral Investig 2012; 17:949-55. [DOI: 10.1007/s00784-012-0784-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/25/2012] [Indexed: 11/25/2022]
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Mizuguchi H, Ono S, Hattori M, Fukui H. Inverse agonistic activity of antihistamines and suppression of histamine H1 receptor gene expression. J Pharmacol Sci 2011; 118:117-121. [PMID: 22186623 DOI: 10.1254/jphs.11177sc] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 11/15/2011] [Indexed: 10/14/2022] Open
Abstract
Histamine H(1) receptor (H1R) expression influences the severity of allergy symptoms. We examined the effect of inverse agonists on H1R gene expression. Two inverse agonists (carebastine and mepyramine), but not the neutral antagonist oxatomide, decreased inositol phosphate accumulation. The inverse agonists also decreased H1R gene expression and down-regulated H1R mRNA below basal expression, while basal H1R mRNA expression was maintained after oxatomide treatment. These results suggest that inverse agonists more potently alleviate allergy symptoms by not only inhibiting stimulus-induced up-regulation of H1R gene expression but also by suppressing basal histamine signaling through their inverse agonistic activity.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Japan
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