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Carvalho KIM, Coutinho DDS, Joca HC, Miranda AS, Cruz JDS, Silva ET, Souza MVN, Faria RX, Silva PMRE, Costa JCS, Martins MA. Anti-Bronchospasmodic Effect of JME-173, a Novel Mexiletine Analog Endowed With Highly Attenuated Anesthetic Activity. Front Pharmacol 2020; 11:1159. [PMID: 32903732 PMCID: PMC7438868 DOI: 10.3389/fphar.2020.01159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 07/16/2020] [Indexed: 01/16/2023] Open
Abstract
Local anesthetics (LAs), such as lidocaine and mexiletine, inhibit bronchoconstriction in asthmatics, but adverse effects limit their use for this specific clinical application. In this study, we describe the anti-spasmodic properties of the mexiletine analog 2-(2-aminopropoxy)-3,5-dimethyl, 4-Br-benzene (JME-173), which was synthesized and screened for inducing reduced activity on Na+ channels. The effectiveness of JME-173 was assessed using rat tracheal rings, a GH3 cell line and mouse cardiomyocytes to access changes in smooth muscle contraction, and Na+, and Ca++ionic currents, respectively. Bronchospasm and airway hyper-reactivity (AHR) were studied using whole-body barometric plethysmography in A/J mice. We observed that the potency of JME-173 was 653-fold lower than mexiletine in inhibiting Na+ currents, but 12-fold higher in inhibiting L-type Ca++ currents. JME-173 was also more potent than mexiletine in inhibiting tracheal contraction by carbachol, allergen, extracellular Ca++, or sodium orthovanadate provocations. The effect of JME-173 on carbachol-induced tracheal contraction remained unaltered under conditions of de-epithelized rings, β2-receptor blockade or adenylate cyclase inhibition. When orally administered, JME-173 and theophylline inhibited methacholine-induced bronchospasm at time points of 1 and 3 h post-treatment, while only JME-173 remained active for at least 6 h. In addition, JME-173 also inhibited AHR in a mouse model of lipopolysaccharide (LPS)-induced lung inflammation. Thus, the mexiletine analog JME-173 shows highly attenuated activity on Na+ channels and optimized anti-spasmodic properties, in a mechanism that is at least in part mediated by regulation of Ca++ inflow toward the cytosol. Thus, JME-173 is a promising alternative for the treatment of clinical conditions marked by life-threatening bronchoconstriction.
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Affiliation(s)
| | | | - Humberto Cavalcante Joca
- Laboratory of Excitable Membranes and Cardiovascular Biology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Artur Santos Miranda
- Laboratory of Excitable Membranes and Cardiovascular Biology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Jader Dos Santos Cruz
- Laboratory of Excitable Membranes and Cardiovascular Biology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Robson Xavier Faria
- Laboratory of Toxoplasmosis and Other Protozoans, Oswaldo Cruz Institute, Rio de Janeiro, Brazil
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2
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Terada Y, Higashi N, Hidaka Y, Isomoto Y, Yayama K. Protein Tyrosine Phosphatase Inhibitor, Orthovanadate, Induces Contraction via Rho Kinase Activation in Mouse Thoracic Aortas. Biol Pharm Bull 2019; 42:877-885. [PMID: 31155587 DOI: 10.1248/bpb.b18-00708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Orthovanadate (OVA), a protein tyrosine phosphatase inhibitor, induces contraction in endothelium-denuded mouse thoracic aortas. OVA-induced contraction was significantly (vs. control rings) suppressed by Rho kinase (Y-27632, 10 µM), extracellular signal-regulated kinase 1 and 2 (Erk1/2, FR180204, 10 µM), Erk1/2 kinase (MEK, PD98059, 10 µM), epidermal growth factor receptor (EGFR, AG1478, 10 µM), and Src inhibitors, and was partially suppressed by c-Jun N-terminal kinase (JNK, AS601245, 10 µM) and p38 (SB203580, 10 µM) inhibitors. However, a myosin light chain kinase inhibitor (ML-7, 10 µM) and a metalloproteinase inhibitor (TAPI-0, 10 µM) had no effect on OVA-induced contraction in mouse thoracic aortas. Phosphorylation of myosin phosphatase target subunit 1 (MYPT1) was abolished by inhibitors of Src, EGFR, MEK, Erk1/2, and Rho kinase, but not by inhibitors of JNK and p38. Erk1/2 phosphorylation by OVA was blocked by inhibitors of EGFR, Src, MEK, and Erk1/2, but not by Rho kinase inhibition. Src phosphorylation at Tyr-416 was abrogated by only Src inhibitor. EGFR phosphorylation at Tyr-1173 was suppressed by a Src inhibitor. These findings suggest that OVA induces contraction via activation of Src, EGFR, MEK, Erk1/2, and Rho kinase, leading to inactivation of myosin light chain phosphatase via MYPT1 phosphorylation.
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Affiliation(s)
- Yuka Terada
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Naoki Higashi
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Yuki Hidaka
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Yasumasa Isomoto
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Katsutoshi Yayama
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
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MacKay CE, Shaifta Y, Snetkov VV, Francois AA, Ward JPT, Knock GA. ROS-dependent activation of RhoA/Rho-kinase in pulmonary artery: Role of Src-family kinases and ARHGEF1. Free Radic Biol Med 2017; 110:316-331. [PMID: 28673614 PMCID: PMC5542024 DOI: 10.1016/j.freeradbiomed.2017.06.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 06/12/2017] [Accepted: 06/29/2017] [Indexed: 12/11/2022]
Abstract
The role of reactive oxygen species (ROS) in smooth muscle contraction is poorly understood. We hypothesised that G-protein coupled receptor (GPCR) activation and hypoxia induce Rho-kinase activity and contraction in rat intra-pulmonary artery (IPA) via stimulation of ROS production and subsequent Src-family kinase (SrcFK) activation. The T-type prostanoid receptor agonist U46619 induced ROS production in pulmonary artery smooth muscle cells (PASMC). U46619 also induced c-Src cysteine oxidation, SrcFK auto-phosphorylation, MYPT-1 and MLC20 phosphorylation and contraction in IPA, and all these responses were inhibited by antioxidants (ebselen, Tempol). Contraction and SrcFK/MYPT-1/MLC20 phosphorylations were also inhibited by combined superoxide dismutase and catalase, or by the SrcFK antagonist PP2, while contraction and MYPT-1/MLC20 phosphorylations were inhibited by the Rho guanine nucleotide exchange factor (RhoGEF) inhibitor Y16. H2O2 and the superoxide-generating quinoledione LY83583 both induced c-Src oxidation, SrcFK auto-phosphorylation and contraction in IPA. LY83583 and H2O2-induced contractions were inhibited by PP2, while LY83583-induced contraction was also inhibited by antioxidants and Y16. SrcFK auto-phosphorylation and MYPT-1/MLC20 phosphorylation was also induced by hypoxia in IPA and this was blocked by mitochondrial inhibitors rotenone and myxothiazol. In live PASMC, sub-cellular translocation of RhoA and the RhoGEF ARHGEF1 was triggered by both U46619 and LY83583 and this translocation was blocked by antioxidants and PP2. RhoA translocation was also inhibited by an ARHGEF1 siRNA. U46619 enhanced ROS-dependent co-immunoprecipitation of ARHGEF1 with c-Src. Our results demonstrate a link between GPCR-induced cytosolic ROS or hypoxia-induced mitochondrial ROS and SrcFK activity, Rho-kinase activity and contraction. ROS and SrcFK activate RhoA via ARHGEF1.
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Affiliation(s)
- Charles E MacKay
- Asthma, Allergy & Lung Biology, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Yasin Shaifta
- Asthma, Allergy & Lung Biology, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Vladimir V Snetkov
- Asthma, Allergy & Lung Biology, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Asvi A Francois
- Cardiovascular Division, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Jeremy P T Ward
- Asthma, Allergy & Lung Biology, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Greg A Knock
- Asthma, Allergy & Lung Biology, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom.
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Teófilo TM, Arruda-Barbosa L, Rodrigues-Silva JM, Vale JKL, Borges RS, Duarte GP, Magalhães PJC, Lahlou S. Mechanism of the vasorelaxant effect induced by trans-4-methyl-β-nitrostyrene, a synthetic nitroderivative, in rat thoracic aorta. Clin Exp Pharmacol Physiol 2017; 44:787-794. [DOI: 10.1111/1440-1681.12771] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 04/02/2017] [Accepted: 04/13/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Taylena Maria Teófilo
- School of Medicine; Department of Physiology and Pharmacology; Federal University of Ceará; Fortaleza CE Brazil
| | - Loeste Arruda-Barbosa
- School of Medicine; Department of Physiology and Pharmacology; Federal University of Ceará; Fortaleza CE Brazil
| | | | | | | | - Gloria Pinto Duarte
- Department of Physiology and Pharmacology; Federal University of Pernambuco; Recife PE Brazil
| | | | - Saad Lahlou
- School of Medicine; Department of Physiology and Pharmacology; Federal University of Ceará; Fortaleza CE Brazil
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Vasodilation and hypotension of a novel 3-benzylquinazolin- 4(3H)-one derivative via the inhibition of calcium flux. Eur J Pharmacol 2016; 791:741-750. [DOI: 10.1016/j.ejphar.2016.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 10/01/2016] [Accepted: 10/04/2016] [Indexed: 11/21/2022]
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Benabdallah H, Gharzouli K. Effects of flavone on the contractile activity of the circular smooth muscle of the rabbit middle colon in vitro. Eur J Pharmacol 2015; 760:20-6. [PMID: 25895637 DOI: 10.1016/j.ejphar.2015.04.007] [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: 03/03/2015] [Revised: 04/03/2015] [Accepted: 04/08/2015] [Indexed: 11/25/2022]
Abstract
The circular smooth muscles of the middle colon of the rabbit generate giant contractions of high amplitude and low frequency. Flavone, at various concentrations, reduces the giant contractions and the tonic contraction induced by 10 µM carbachol and 80 mM KCl. The contractions induced by dequalinium and tetraethylammonium are reduced by flavone (30 µM). At 100 µM, flavone decreases the contraction induced by 100 µM methylene blue and 1mM orthovanadate. These results suggest that flavone inhibit the giant contractions by (1) inhibition of voltage-dependent Ca(2+) channels, (2) activation of guanyl cyclase, (3) opening of K(+) channels and (4) inhibition of tyrosines kinases.
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Affiliation(s)
- Hassiba Benabdallah
- Department of Microbiology and Biochemistry, Faculty of Sciences, University Mohamed Boudiaf of M׳sila, Algeria.
| | - Kamel Gharzouli
- Department of Animal physiology, Faculty of Nature and Life Sciences, University Ferhat Abbes of Setif, Algeria
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Mills RD, Mita M, Walsh MP. A role for the Ca2+-dependent tyrosine kinase Pyk2 in tonic depolarization-induced vascular smooth muscle contraction. J Muscle Res Cell Motil 2015; 36:479-89. [DOI: 10.1007/s10974-015-9416-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 06/27/2015] [Indexed: 10/24/2022]
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8
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Vasconcelos-Silva AA, Lima FJBD, Brito TSD, Lahlou S, Magalhães PJC. Vasorelaxation induced by methyl cinnamate, the major constituent of the essential oil of Ocimum micranthum, in rat isolated aorta. Clin Exp Pharmacol Physiol 2015; 41:755-62. [PMID: 25115734 DOI: 10.1111/1440-1681.12289] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 07/15/2014] [Accepted: 07/17/2014] [Indexed: 11/29/2022]
Abstract
The aim of the present study was to investigate the vascular effects of the E-isomer of methyl cinnamate (E-MC) in rat isolated aortic rings and the putative mechanisms underlying these effects. At 1-3000 μmol/L, E-MC concentration-dependently relaxed endothelium-intact aortic preparations that had been precontracted with phenylephrine (PHE; 1 μmol/L), with an IC50 value (geometric mean) of 877.6 μmol/L (95% confidence interval (CI) 784.1-982.2 μmol/L). These vasorelaxant effects of E-MC remained unchanged after removal of the vascular endothelium (IC50 725.5 μmol/L; 95% CI 546.4-963.6 μmol/L) and pretreatment with 100 μmol/L N(G) -nitro-l-arginine methyl ester (IC50 749.0 μmol/L; 95% CI 557.8-1005.7 μmol/L) or 10 μmol/L 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (IC50 837.2 μmol/L; 95% CI 511.4-1370.5 μmol/L). Over the concentration range 1-3000 μmol/L, E-MC relaxed K(+) -induced contractions in mesenteric artery preparations (IC50 314.5 μmol/L; 95% CI 141.9-697.0 μmol/L) with greater potency than in aortic preparations (IC50 1144.7 μmol/L; 95% CI 823.2-1591.9 μmol/L). In the presence of a saturating contractile concentration of K(+) (150 mmol/L) in Ca(2+) -containing medium combined with 3 μmol/L PHE, 1000 μmol/L E-MC only partially reversed the contractile response. In contrast, under similar conditions, E-MC nearly fully relaxed PHE-induced contractions in aortic rings in a Ba(2+) -containing medium. In preparations that were maintained under Ca(2+) -free conditions, 600 and 1000 μmol/L E-MC significantly reduced the contractions induced by exogenous Ca(2+) or Ba(2+) in KCl-precontracted preparations, but not in PHE-precontracted preparations (in the presence of 1 μmol/L verapamil). In addition, E-MC (1-3000 μmol/L) concentration-dependently relaxed the contractions induced by 2 mmol/L sodium orthovanadate. Based on these observations, E-MC-induced endothelium-independent vasorelaxant effects appear to be preferentially mediated by inhibition of plasmalemmal Ca(2+) influx through voltage-dependent Ca(2+) channels. However, the involvement of a myogenic mechanism in the effects of E-MC is also possible.
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9
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Ito K, Matsuzaki M, Sasahara T, Shin M, Yayama K. Orthovanadate-Induced Vasoconstriction of Rat Mesenteric Arteries Is Mediated by Rho Kinase-Dependent Inhibition of Myosin Light Chain Phosphatase. Biol Pharm Bull 2015; 38:1809-16. [DOI: 10.1248/bpb.b15-00587] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kazuya Ito
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Mai Matsuzaki
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Tomoya Sasahara
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Mariko Shin
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
| | - Katsutoshi Yayama
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University
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10
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Arruda-Barbosa L, Rodrigues KMS, Souza-Neto FDCV, Duarte GP, Borges RS, Magalhães PJC, Lahlou S. Vasorelaxant effects of 1-nitro-2-phenylethene in rat isolated aortic rings. Vascul Pharmacol 2014; 63:55-62. [PMID: 25131395 DOI: 10.1016/j.vph.2014.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 07/27/2014] [Accepted: 08/01/2014] [Indexed: 11/28/2022]
Abstract
Previously, we showed that nitro-2-phenylethane is a vasorelaxant constituent of the essential oil of Aniba canelilla. Here, we investigated the mechanisms underlying the vascular effects of 1-nitro-2-phenylethene (NPe), a structural analog of 1-nitro-2-phenylethane obtained synthetically, in rat isolated thoracic aortic preparations. At 0.1-100 μg/mL, NPe similarly relaxed endothelium-intact or endothelium-denuded aortic preparations pre-contracted with 60mM KCl or with phenylephrine (PHE, 1 μM). Vasorelaxant effects of NPe against PHE-induced contractions remained unaffected following blockade of potassium channels by TEA, and inhibition of either nitric oxide synthase by l-NAME, cyclooxygenase by indomethacin or guanylate cyclase by ODQ. In preparations maintained under Ca(2+)-free conditions, NPe significantly reduced the contractions induced (i) by PHE, but not those evoked by caffeine, (ii) by CaCl2 in either PHE (in the presence of 1 μM verapamil)- or KCl-stimulated preparations, (iii) by extracellular Ca(2+) restoration in thapsigargin-treated aortic preparations, and (iv) by the activator of protein kinase C phorbol-12,13-dibutyrate or the inhibitor of protein tyrosine phosphatase sodium orthovanadate. It is concluded that NPe induced an endothelium-independent vasorelaxation with potency greater than its structural analog 1-nitro-2-phenylethane. Such action appears to occur intracellularly probably through inhibition of contractile events that are clearly independent of Ca(2+) influx from the extracellular milieu.
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Affiliation(s)
| | | | | | - Gloria Pinto Duarte
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, PE, Brazil.
| | | | | | - Saad Lahlou
- Department of Physiology and Pharmacology, Federal University of Ceará, CE, Brazil.
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Yayama K, Sasahara T, Ohba H, Funasaka A, Okamoto H. Orthovanadate-induced vasocontraction is mediated by the activation of Rho-kinase through Src-dependent transactivation of epidermal growth factor receptor. Pharmacol Res Perspect 2014; 2:e00039. [PMID: 25505586 PMCID: PMC4184709 DOI: 10.1002/prp2.39] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 02/25/2014] [Accepted: 02/28/2014] [Indexed: 01/26/2023] Open
Abstract
Orthovanadate (OVA), a protein tyrosine phosphatase (PTPase) inhibitor, exerts contractile effects on smooth muscle in a Rho-kinase-dependent manner, but the precise mechanisms are not elucidated. The aim of this study was to determine the potential roles of Src and epidermal growth factor receptor (EGFR) in the OVA-induced contraction of rat aortas and the phosphorylation of myosin phosphatase target subunit 1 (MYPT1; an index of Rho-kinase activity) in vascular smooth muscle cells (VSMCs). Aortic contraction by OVA was significantly blocked not only by Rho kinase inhibitors Y-27632 [R-[+]-trans-N-[4-pyridyl]-4-[1-aminoethyl]-cyclohexanecarboxamide] and hydroxyfasudil [1-(1-hydroxy-5-isoquinolinesulfonyl)homopiperazine] but also by Src inhibitors PP2 [4-amino-3-(4-chlorophenyl)-1-(t-butyl)-1H-pyrazolo[3,4-d]pyrimidine] and Src inhibitor No. 5 [4-(3′-methoxy-6′-chloro-anilino)-6-methoxy-7(morpholino-3-propoxy)-quinazoline], and the EGFR inhibitors AG1478 [4-(3-chloroanilino)-6,7-dimethoxyquinazoline] and EGFR inhibitor 1 [cyclopropanecarboxylic acid-(3-(6-(3-trifluoromethyl-phenylamino)-pyrimidin-4-ylamino)-phenyl)-amide]. OVA induced rapid increases in the phosphorylation of MYPT1 (Thr-853), Src (Tyr-416), and EGFR (Tyr-1173) in VSMCs, and Src inhibitors abolished these effects. OVA-induced Src phosphorylation was abrogated by Src inhibitors, but not affected by inhibitors of EGFR and Rho-kinase. Inhibitors of Src and EGFR, but not Rho-kinase, also blocked OVA-induced EGFR phosphorylation. Furthermore, a metalloproteinase inhibitor TAPI-0 [N-(R)-[2-(hydroxyaminocarbonyl) methyl]-4-methylpentanoyl-l-naphthylalanyl-l-alanine amide] and an inhibitor of heparin-binding EGF (CRM 197) not only abrogated the OVA-induced aortic contraction, but also OVA-induced EGFR and MYPT1 phosphorylation, suggesting the involvement of EGFR transactivation. OVA also induced EGFR phosphorylation at Tyr-845, one of residues phosphorylated by Src. These results suggest that OVA-induced vasocontraction is mediated by the Rho-kinase-dependent inactivation of myosin light-chain phosphatase via signaling downstream of Src-induced transactivation of EGFR.
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Affiliation(s)
- Katsutoshi Yayama
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Tomoya Sasahara
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Hisaaki Ohba
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Ayaka Funasaka
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
| | - Hiroshi Okamoto
- Laboratory of Cardiovascular Pharmacology, Department of Biopharmaceutical Sciences, Kobe Gakuin University Minatojima 1-1-3, Chuo-ku, Kobe, 650-8586, Japan
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Mita M, Tanaka H, Yanagihara H, Nakagawa JI, Hishinuma S, Sutherland C, Walsh MP, Shoji M. Membrane depolarization-induced RhoA/Rho-associated kinase activation and sustained contraction of rat caudal arterial smooth muscle involves genistein-sensitive tyrosine phosphorylation. J Smooth Muscle Res 2013; 49:26-45. [PMID: 24133693 PMCID: PMC5137315 DOI: 10.1540/jsmr.49.26] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Rho-associated kinase (ROK) activation plays an important role in K+-induced
contraction of rat caudal arterial smooth muscle (Mita et al., Biochem J. 2002; 364:
431–40). The present study investigated a potential role for tyrosine kinase activity in
K+-induced RhoA activation and contraction. The non-selective tyrosine kinase
inhibitor genistein, but not the src family tyrosine kinase inhibitor PP2, inhibited
K+-induced sustained contraction (IC50 = 11.3 ± 2.4 µM). Genistein
(10 µM) inhibited the K+-induced increase in myosin light chain
(LC20) phosphorylation without affecting the Ca2+ transient. The
tyrosine phosphatase inhibitor vanadate induced contraction that was reversed by genistein
(IC50 = 6.5 ± 2.3 µM) and the ROK inhibitor Y-27632 (IC50 = 0.27 ±
0.04 µM). Vanadate also increased LC20 phosphorylation in a genistein- and
Y-27632-dependent manner. K+ stimulation induced translocation of RhoA to the
membrane, which was inhibited by genistein. Phosphorylation of MYPT1 (myosin-targeting
subunit of myosin light chain phosphatase) was significantly increased at Thr855 and
Thr697 by K+ stimulation in a genistein- and Y-27632-sensitive manner. Finally,
K+ stimulation induced genistein-sensitive tyrosine phosphorylation of
proteins of ∼55, 70 and 113 kDa. We conclude that a genistein-sensitive tyrosine kinase,
activated by the membrane depolarization-induced increase in
[Ca2+]i, is involved in the RhoA/ROK activation and sustained
contraction induced by K+. Ca2+ sensitization, myosin light chain
phosphatase, RhoA, Rho-associated kinase, tyrosine kinase
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Affiliation(s)
- Mitsuo Mita
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
| | - Hitoshi Tanaka
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
| | - Hayato Yanagihara
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
| | - Jun-ichi Nakagawa
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
| | - Shigeru Hishinuma
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
| | - Cindy Sutherland
- Smooth Muscle Research Group, Department of Biochemistry and
Molecular Biology, University of Calgary, Canada
| | - Michael P. Walsh
- Smooth Muscle Research Group, Department of Biochemistry and
Molecular Biology, University of Calgary, Canada
| | - Masaru Shoji
- Department of Pharmacodynamics, Meiji Pharmaceutical
University, Japan
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RATTAN SATISH, PHILLIPS BENJAMINR, MAXWELL PINCKNEYJ. RhoA/Rho-kinase: pathophysiologic and therapeutic implications in gastrointestinal smooth muscle tone and relaxation. Gastroenterology 2010; 138:13-8.e1-3. [PMID: 19931260 PMCID: PMC5599165 DOI: 10.1053/j.gastro.2009.11.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- SATISH RATTAN
- Department of Medicine, Division of Gastroenterology & Hepatology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA
| | - BENJAMIN R. PHILLIPS
- Department of Surgery, Division of Colon and Rectal Surgery, Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA
| | - PINCKNEY J. MAXWELL
- Department of Surgery, Division of Colon and Rectal Surgery, Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA
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14
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Mori-Kawabe M, Tsushima H, Fujimoto S, Tada T, Ito JI. Role of Rho/Rho-kinase and NO/cGMP signaling pathways in vascular function prior to atherosclerosis. J Atheroscler Thromb 2009; 16:722-32. [PMID: 19755789 DOI: 10.5551/jat.1875] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM Atherosclerosis is a cardiovascular disease; however, there is little information on signal transduction for vascular function in the early stage of atherosclerosis. In this work, we investigated the role of Rho/Rho-kinase and nitrogen oxide (NO)/cyclic GMP (cGMP) signaling pathways in the aorta prior to atherosclerosis. METHODS Tension, the expression of RhoA protein, Rho-kinase activity and the cGMP level were measured using endothelium-intact or -denuded aorta prepared from apolipoprotein E-deficient (apoE-KO) and C57BL/6 wild-type (WT) mice at 2 months of age. RESULTS Phenylephrine (PE) induced less maximal contraction in the endothelium-denuded aorta from apoE-KO than from WT mice. A Rho-kinase inhibitor (Y-27632) reduced more effectively the contraction of apoE-KO than WT mice, but their RhoA proteins and Rho-kinase activities were not so different. Acetylcholine caused larger relaxation of the PE-stimulated, endothelium-intact aorta in apoE-KO due to endothelial NO release than WT mice. The basal cGMP level in the endothelium-intact aorta of apoE-KO mice was higher than that of WT. CONCLUSIONS Smooth muscle contraction via alpha(1)-adrenergic receptor shows higher dependency on Rho-kinase activity, suggesting down-regulation of the mechanism different from Rho/Rho kinase signaling in the aorta prior to atherosclerosis. Endothelium-dependent relaxation is also intensified through the NO/cGMP pathway.
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Affiliation(s)
- Mayumi Mori-Kawabe
- Department of Cellular and Molecular Pharmacology, Nagoya City University Graduate School of Medical Sciences, Japan.
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Seok YM, Baek I, Kim YH, Jeong YS, Lee IJ, Shin DH, Hwang YH, Kim IK. Isoflavone attenuates vascular contraction through inhibition of the RhoA/Rho-kinase signaling pathway. J Pharmacol Exp Ther 2008; 326:991-8. [PMID: 18577703 DOI: 10.1124/jpet.108.138529] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Isoflavones decrease blood pressure, improve lipid profiles, and restore vascular function. We hypothesized that isoflavone attenuates vascular contraction by inhibiting RhoA/Rho-kinase signaling pathway. Rat aortic rings were denuded of endothelium, mounted in organ baths, and contracted with 11,9 epoxymethano-prostaglandin F(2alpha) (U46619), a thromboxane A2 analog, or KCl 30 min after the pretreatment with genistein (4',5,7-trihydroxyisoflavone), daidzein (4',7-dihydroxyisoflavone), or vehicle. We determined the phosphorylation level of the myosin light chain (MLC(20)), myosin phosphatase-targeting subunit 1 (MYPT1), and protein kinase C-potentiated inhibitory protein for heterotrimeric myosin light-chain phosphatase of 17 kDa (CPI17) by means of the Western blot. We also measured the amount of GTP RhoA as a marker regarding RhoA activation. The cumulative additions of U46619 or KCl increased vascular tension in a concentration-dependent manner, which were inhibited by pretreatment with genistein or daidzein. Both U46619 (30 nM) and KCl (50 mM) increased MLC(20) phosphorylation levels, which were inhibited by genistein and daidzein. Furthermore, both genistein and daidzein decreased the amount of GTP RhoA activated by either U46619 or KCl. U46619 (30 nM) increased phosphorylation of the MYPT1(Thr855) and CPI17(Thr38), which were also inhibited by genistein or daidzein. However, neither genistein nor daidzein inhibited phorbol 12,13-dibutyrate-induced vascular contraction and CPI17 phosphorylation. In conclusion, isoflavone attenuates vascular contraction, at least in part, through inhibition of the RhoA/Rho-kinase signaling pathway.
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Affiliation(s)
- Young Mi Seok
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 700-422, Republic of Korea
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Knock GA, Shaifta Y, Snetkov VA, Vowles B, Drndarski S, Ward JPT, Aaronson PI. Interaction between src family kinases and rho-kinase in agonist-induced Ca2+-sensitization of rat pulmonary artery. Cardiovasc Res 2007; 77:570-9. [PMID: 18032393 PMCID: PMC5436746 DOI: 10.1093/cvr/cvm073] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Aims We investigated the role of src family kinases (srcFK) in agonist-mediated Ca2+-sensitization in pulmonary artery and whether this involves interaction with the rho/rho-kinase pathway. Methods and results Intra-pulmonary arteries (IPAs) and cultured pulmonary artery smooth muscle cells (PASMC) were obtained from rat. Expression of srcFK was determined at the mRNA and protein levels. Ca2+-sensitization was induced by prostaglandin F2α (PGF2α) in α-toxin-permeabilized IPAs. Phosphorylation of the regulatory subunit of myosin phosphatase (MYPT-1) and of myosin light-chain-20 (MLC20) and translocation of rho-kinase in response to PGF2α were also determined. Nine srcFK were expressed at the mRNA level, including src, fyn, and yes, and PGF2α enhanced phosphorylation of three srcFK proteins at tyr-416. In α-toxin-permeabilized IPAs, PGF2α enhanced the Ca2+-induced contraction (pCa 6.9) approximately three-fold. This enhancement was inhibited by the srcFK blockers SU6656 and PP2 and by the rho-kinase inhibitor Y27632. Y27632, but not SU6656 or PP2, also inhibited the underlying pCa 6.9 contraction. PGF2α enhanced phosphorylation of MYPT-1 at thr-697 and thr-855 and of MLC20 at ser-19. This enhancement, but not the underlying basal phosphorylation, was inhibited by SU6656. Y27632 suppressed both basal and PGF2α-mediated phosphorylation. The effects of SU6656 and Y27632, on both contraction and MYPT-1 and MLC20 phosphorylation, were not additive. PGF2α triggered translocation of rho-kinase in PASMC, and this was inhibited by SU6656. Conclusions srcFK are activated by PGF2α in the rat pulmonary artery and may contribute to Ca2+-sensitization and contraction via rho-kinase translocation and phosphorylation of MYPT-1.
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Affiliation(s)
- Greg A Knock
- Department of Asthma, Allergy and Respiratory Science, School of Medicine, King's College London, Room 3.20, Franklin Wilkins Building, Stamford Street, London SE1 9NH, UK.
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Sakai H, Chiba Y, Misawa M. Role of Rho kinase in endothelin-1-induced phosphorylation of CPI-17 in rat bronchial smooth muscle. Pulm Pharmacol Ther 2006; 20:734-9. [PMID: 17071121 DOI: 10.1016/j.pupt.2006.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2005] [Revised: 06/12/2006] [Accepted: 08/31/2006] [Indexed: 10/24/2022]
Abstract
It has been reported that CPI-17 (protein kinase C (PKC)-potentiated inhibitory protein for heterotrimeric myosin light chain phosphatase (MLCP) of 17 kDa) was phosphorylated by excitatory agonists in smooth muscle contraction. However, endothelin-1 (ET-1)-mediated regulation of CPI-17 in bronchial smooth muscle has not been documented. We therefore investigated whether phosphorylation of CPI-17 is induced by ET-1 in rat bronchial smooth muscle. Moreover, the role of Rho kinase (ROCK; Rho-associated coiled-coil forming protein kinase) is investigated in phosphorylation of CPI-17 induced by ET-1 in rat bronchial smooth muscle. The ET-1-induced contraction was attenuated by Y-27632 (10(-6) M), a ROCK inhibitor. ET-1 induced a phosphorylation of CPI-17 with a phosphorylation of myosin light chain (MLC); those phosphorylation responses were significantly inhibited by Y-27632 (10(-6) M). These findings suggest that the activation of ROCK is involved in force development and CPI-17 phosphorylation induced by ET-1 stimulation in rat bronchial smooth muscle. Thus, RhoA/ROCK/CPI-17 pathway is considered to play an important role in the ET-1-induced Ca(2+) sensitisation of bronchial smooth muscle contraction.
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Affiliation(s)
- Hiroyasu Sakai
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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