1
|
Hirata F, Harada T, Corcoran GB, Hirata A. Dietary flavonoids bind to mono-ubiquitinated annexin A1 in nuclei, and inhibit chemical induced mutagenesis. Mutat Res 2014; 759:29-36. [PMID: 24269256 DOI: 10.1016/j.mrfmmm.2013.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 11/09/2013] [Indexed: 06/02/2023]
Abstract
In order to investigate the mechanisms of anti-mutagenic action by dietary flavonoids, we investigated if they inhibit mutation of the thymidine kinase (tk) gene in L5178Ytk(±) lymphoma cells. Silibinin, quercetin and genistein suppressed mutation of the tk gene induced in L5178Ytk(±) lymphoma cells by methyl methanesulfonate (MMS) and As(3+). Flavone and flavonol were less effective. To establish that mutation of the tk gene in L5178Ytk(±) lymphoma cells by MMS and As(3+) is mediated through mono-ubiquitinated annexin A1, L5178Ytk(±) lymphoma cells were treated with annexin A1 anti-sense oligonucleotide. The treatment reduced mRNA as well as protein levels of annexin A1, and suppressed mutation of the tk gene. Nuclear extracts from L5178Ytk(±) lymphoma cells catalyzed translesion DNA synthesis with an oligonucleotide template containing 8-oxo-guanosine in an annexin A1 dependent manner. This translesion DNA synthesis was inhibited by the anti-mutagenic flavonoids, silibinin, quercetin and genistein, in a concentration dependent manner, but only slightly by flavone and flavonol. Because these observations implicate involvement of annexin A1 in mutagenesis, we examined if flavonoids suppress nuclear annexin A1 helicase activity. Silibinin, quercetin and genistein inhibited ssDNA binding, DNA chain annealing and DNA unwinding activities of purified nuclear mono-ubiquitinated annexin A1. Flavone and flavonol were ineffective. The apparent direct binding of anti-mutagenic flavonoids to the annexin A1 molecule was supported by fluorescence quenching. Taken together, these findings illustrate that nuclear annexin A1 may be a novel and productive target protein of prevention for DNA damage induced gene mutation, ultimately conferring cancer chemoprevention.
Collapse
Affiliation(s)
- Fusao Hirata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States.
| | - Takasuke Harada
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - George B Corcoran
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - Aiko Hirata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| |
Collapse
|
2
|
Adner M, Larsson B, Säfholm J, Naya I, Miller-Larsson A. Budesonide prevents cytokine-induced decrease of the relaxant responses to formoterol and terbutaline, but not to salmeterol, in mouse trachea. J Pharmacol Exp Ther 2010; 333:273-80. [PMID: 20061444 DOI: 10.1124/jpet.109.156224] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
During asthma exacerbations, increased airway inflammation may impair the effects of beta(2)-adrenoceptor (beta(2)AR) agonists. It is unclear whether this impairment is prevented by inhaled glucocorticoids (GCs). We have investigated the relaxation of carbachol-contracted mouse tracheal segments to the beta(2)AR agonists formoterol, terbutaline, and salmeterol. The segments were pre-exposed for 4 days to the proinflammatory cytokines tumor necrosis factor alpha (100 ng/ml) and interleukin-1beta (10 ng/ml) with or without the GC, budesonide (1 microM). Formoterol and terbutaline induced greater maximal relaxation (R(max)) than salmeterol. The cytokines decreased R(max) of all beta(2)AR agonists, whereas budesonide had no effect. However, after concomitant treatment with cytokines and budesonide, the R(max) values of formoterol and terbutaline were not impaired, whereas budesonide did not prevent the decrease in the R(max) of salmeterol. A similar pattern was observed for cAMP production by the agonists. In tracheal smooth muscle, beta(2)AR mRNA was not affected by the cytokines but increased with budesonide. However, the cytokines markedly increased cyclooxygenase (COX)-2 mRNA expression, which may lead to heterologous desensitization of beta(2)AR. It is noteworthy that the cytokine-induced increase of COX-2 was blocked by concomitant budesonide suggesting that heterologous desensitization of beta(2)AR by the cytokines may be prevented by budesonide treatment. Budesonide prevented cytokine-induced impairment of the tracheal relaxation and beta(2)AR/cAMP signaling for formoterol but not for salmeterol. This suggests that differences exist between formoterol and salmeterol in beta(2)AR coupling/activation and/or signal transduction upstream of cAMP. These results imply that maximal bronchodilator effects of formoterol, but not of salmeterol, are maintained by budesonide treatment during periods with increased inflammation, such as asthma exacerbations.
Collapse
Affiliation(s)
- Mikael Adner
- Department of Experimental Asthma and Allergy Research, Institute of Environmental Medicine, Scheeles väg 1, Karolinska Institutet, SE-17177 Stockholm, Sweden.
| | | | | | | | | |
Collapse
|
3
|
El-Haroun H, Clarke DL, Deacon K, Bradbury D, Clayton A, Sutcliffe A, Knox AJ. IL-1beta, BK, and TGF-beta1 attenuate PGI2-mediated cAMP formation in human pulmonary artery smooth muscle cells by multiple mechanisms involving p38 MAP kinase and PKA. Am J Physiol Lung Cell Mol Physiol 2007; 294:L553-62. [PMID: 18156442 DOI: 10.1152/ajplung.00044.2006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We have previously shown that interleukin (IL)-1beta, transforming growth factor (TGF)-beta1, or bradykinin (BK) impair cAMP generation in response to prostacyclin analogs in human pulmonary artery smooth muscle (PASM), suggesting that inflammation can impair the effects of prostacyclin analogs on PASM in pulmonary hypertension. Here we explored the biochemical mechanisms involved. We found that IL-1beta, BK, and TGF-beta1 reduced adenylyl cyclase isoform 1, 2, and 4 mRNA, increased Galphai protein levels, and reduced prostacyclin receptor (IP receptor) mRNA expression. In contrast, Galphas protein levels were unchanged. Protein kinase A (PKA) (H-89, KT-2750, PKIm) and p38 mitogen-activated protein (MAP) kinase (SB-202190) inhibitors attenuated these effects, but protein kinase C (bisindolylmaleide) or phosphoinositol 3-kinase (LY-294002) inhibitors did not. Fluorescent kemptide assay and Western blotting confirmed that PKA and p38 MAP kinase were activated by IL-1beta, BK, and TGF-beta1. These studies suggest that IL-1beta, BK, and TGF-beta1 impair IP receptor-mediated cAMP accumulation by multiple effects on different components of the signaling pathway and that these effects are PKA and p38 MAP kinase dependent.
Collapse
Affiliation(s)
- H El-Haroun
- Division of Respiratory Medicine, University of Nottingham, Clinical Science Bldg., City Hospital, Nottingham, NG5 1PB, United Kingdom
| | | | | | | | | | | | | |
Collapse
|
4
|
Deshpande DA, Penn RB. Targeting G protein-coupled receptor signaling in asthma. Cell Signal 2006; 18:2105-20. [PMID: 16828259 DOI: 10.1016/j.cellsig.2006.04.008] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Accepted: 04/28/2006] [Indexed: 01/23/2023]
Abstract
The complex disease asthma, an obstructive lung disease in which excessive airway smooth muscle (ASM) contraction as well as increased ASM mass reduces airway lumen size and limits airflow, can be viewed as a consequence of aberrant airway G protein-coupled receptor (GPCR) function. The central role of GPCRs in determining airway resistance is underscored by the fact that almost every drug used in the treatment of asthma directly or indirectly targets either GPCR-ligand interaction, GPCR signaling, or processes that produce GPCR agonists. Although many airway cells contribute to the regulation of airway resistance and architecture, ASM properties and functions have the greatest impact on airway homeostasis. The theme of this review is that GPCR-mediated regulation of ASM tone and ASM growth is a major determinant of the acute and chronic features of asthma, and multiple strategies targeting GPCR signaling may be employed to prevent or manage these features.
Collapse
Affiliation(s)
- Deepak A Deshpande
- Department of Internal Medicine and Center for Human Genomics, Wake Forest University Health Sciences, Medical Center Blvd, Winston-Salem, NC 27157, United States
| | | |
Collapse
|
5
|
Billington CK, Penn RB. Signaling and regulation of G protein-coupled receptors in airway smooth muscle. Respir Res 2003. [DOI: 10.1186/1465-9921-4-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
6
|
Mak JCW, Hisada T, Salmon M, Barnes PJ, Chung KF. Glucocorticoids reverse IL-1beta-induced impairment of beta-adrenoceptor-mediated relaxation and up-regulation of G-protein-coupled receptor kinases. Br J Pharmacol 2002; 135:987-96. [PMID: 11861327 PMCID: PMC1573209 DOI: 10.1038/sj.bjp.0704545] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
1. The aim of the present study was to examine the effects of glucocorticoid dexamethasone on airway responsiveness to albuterol after intratracheal instillation of saline or IL-1beta in Brown-Norway rats in vivo and to elucidate the molecular mechanism of this effect. 2. IL-1beta caused a significant reduction in albuterol-mediated relaxation to protect against MCh-induced bronchoconstriction. Dexamethasone attenuated the IL-1beta-induced impaired relaxation while alone had no effect when compared to rats treated identically with saline. 3. The density of beta(2)-adrenoceptors was significantly reduced in lung membranes harvested from IL-1beta-treated rats, which was associated with impaired isoproterenol- and forskolin-stimulated cyclic AMP accumulation and adenylyl cyclase (AC) activity ex vivo. Dexamethasone did not prevent IL-1beta-induced down-regulation of beta(2)-adrenoceptors but completely blocked IL-1beta-induced impairment of cyclic AMP accumulation and AC activity stimulated by isoproterenol and forskolin. 4. The inhibitory G-protein subtypes, G(ialpha1), G(ialpha2) and G(ialpha3), were detected in lung membranes prepared from all groups of rats but the intensity of G(ialpha1) and G(ialpha2) was markedly increased in IL-1beta-treated rats, which were not prevented by dexamethasone. 5. The activity of cytosolic GRK and the expression of GRK2 and GRK5 were elevated in the lung of IL-1beta-treated rats, which were completely abolished by dexamethasone. 6. These results indicate that treatment of rats with IL-1beta results in desensitization of pulmonary beta(2)-adrenoceptors. In light of data obtained in this study, we propose that both the decrease in AC activity and the increase in GRK activity, which are reversed by dexamethasone, may underlie beta(2)-adrenoceptor desensitization.
Collapse
Affiliation(s)
- Judith C W Mak
- Department of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Dovehouse Street, London SW3 6LY
| | - Takeshi Hisada
- Department of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Dovehouse Street, London SW3 6LY
| | - Michael Salmon
- Department of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Dovehouse Street, London SW3 6LY
| | - Peter J Barnes
- Department of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Dovehouse Street, London SW3 6LY
| | - K Fan Chung
- Department of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Dovehouse Street, London SW3 6LY
- Author for correspondence:
| |
Collapse
|
7
|
Schwemmer M, Aho H, Michel JB. Interleukin-1beta-induced type IIA secreted phospholipase A2 gene expression and extracellular activity in rat vascular endothelial cells. Tissue Cell 2001; 33:233-40. [PMID: 11469536 DOI: 10.1054/tice.2000.0163] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two phospholipase A2 (PLA2) isoforms, secretory and cytosolic, have been implicated in inflammation. Secretory type IIA PLA2 (sPLA2-IIA), which hydrolyzes fatty acids bound at the sn-2 position of glycerophospholipids, has been detected universally in a variety of mammalian tissues and cells. The expression of the sPLA2-IIA gene and its extracellular activity were shown to be regulated by different factors such as hypoxia, cytokines and phorbol esters. In the present study, we examined the effects of interleukin-1beta (IL-1beta) on the expression of the 14kDa sPLA2-IIA, determined using reverse transcription polymerase chain reaction and radiometric Escherichia coli enzyme assay in primary cultures of rat endothelial cells and in two different rat endothelial cell lines (SVAREC and RBE4). These experiments revealed that IL-1beta induces sPLA2-IIa gene expression and secretion of the enzyme in endothelial cells in a dose- and time-dependent manner. The cAMP-elevator forskolin did not augment the cytokine-induced elevation of sPLA2-IIa enzyme activity but significantly increased the IL-1beta-stimulated sPLA2-IIa mRNA contents in endothelial cells.
Collapse
Affiliation(s)
- M Schwemmer
- Institute of Applied Physiology, Albert-Ludwigs University, Freiburg, Germany.
| | | | | |
Collapse
|
8
|
Serou MJ, DeCoster MA, Bazan NG. Interleukin-1 beta activates expression of cyclooxygenase-2 and inducible nitric oxide synthase in primary hippocampal neuronal culture: Platelet-activating factor as a preferential mediator of cyclooxygenase-2 expression. J Neurosci Res 1999. [DOI: 10.1002/(sici)1097-4547(19991115)58:4%3c593::aid-jnr12%3e3.0.co;2-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
9
|
Serou MJ, DeCoster MA, Bazan NG. Interleukin-1 beta activates expression of cyclooxygenase-2 and inducible nitric oxide synthase in primary hippocampal neuronal culture: Platelet-activating factor as a preferential mediator of cyclooxygenase-2 expression. J Neurosci Res 1999. [DOI: 10.1002/(sici)1097-4547(19991115)58:4<593::aid-jnr12>3.0.co;2-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
10
|
Koto H, Mak JC, Haddad EB, Xu WB, Salmon M, Barnes PJ, Chung KF. Mechanisms of impaired beta-adrenoceptor-induced airway relaxation by interleukin-1beta in vivo in the rat. J Clin Invest 1996; 98:1780-7. [PMID: 8878428 PMCID: PMC507616 DOI: 10.1172/jci118977] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We studied the in vivo mechanism of beta-adrenergic receptor (beta-AR) hyporesponsiveness induced by intratracheal instillation of interleukin-1beta (IL-1beta, 500 U) in Brown-Norway rats. Tracheal and bronchial smooth muscle responses were measured under isometric conditions ex vivo. Contractile responses to electrical field stimulation and to carbachol were not altered, but maximal relaxation induced by isoproterenol (10(-6)-10(-5) M) was significantly reduced 24 h after IL-1beta treatment in tracheal tissues and to a lesser extent, in the main bronchi. Radioligand binding using [125I]iodocyanopindolol revealed a 32+/-7% reduction in beta-ARs in lung tissues from IL-1beta-treated rats, without any significant changes in beta2-AR mRNA level measured by Northern blot analysis. Autoradiographic studies also showed significant reduction in beta2-AR in the airways. Isoproterenol-stimulated cyclic AMP accumulation was reduced by IL-1beta at 24 h in trachea and lung tissues. Pertussis toxin reversed this hyporesponsiveness to isoproterenol but not to forskolin in lung tissues. Western blot analysis revealed an IL-1beta-induced increase in Gi(alpha) protein expression. Thus, IL-1beta induces an attenuation of beta-AR-induced airway relaxation through mechanisms involving a reduction in beta-ARs, an increase in Gi(alpha) subunit, and a defect in adenylyl cyclase activity.
Collapse
Affiliation(s)
- H Koto
- Thoracic Medicine, National Heart and Lung Institute, Imperial College of Science, Technology and Medicine, London, United Kingdom
| | | | | | | | | | | | | |
Collapse
|
11
|
Hakonarson H, Herrick DJ, Serrano PG, Grunstein MM. Mechanism of cytokine-induced modulation of beta-adrenoceptor responsiveness in airway smooth muscle. J Clin Invest 1996; 97:2593-600. [PMID: 8647953 PMCID: PMC507346 DOI: 10.1172/jci118708] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
To elucidate the role of specific proinflammatory cytokines in regulating airway responsiveness, we examined the effects and mechanisms of action of IL-1beta, TNF-alpha, and IL-2 on the beta-adrenoceptor- and postreceptor-coupled transmembrane signaling mechanisms regulating relaxation in isolated rabbit tracheal smooth muscle (TSM) segments. During half-maximal isometric contraction of the tissues with acetylcholine, relaxation responses to isoproterenol, PGE2, and forskolin were separately compared in control (untreated) TSM and tissues incubated for 18 h with IL-1beta (10 ng/ml), TNF-(alpha (100 ng/ml), or IL-2 (200 ng/ml). Relative to controls, IL-1beta- and TNF-alpha-treated TSM, but not IL-2-treated tissues, depicted significant attenuation of their maximal relaxation and sensitivity (i.e., -log dose producing 50% maximal relaxation) to isoproterenol (P < 0.001) and PGE2 (P < 0.05); whereas the relaxation responses to direct stimulation of adenylate cyclase with forskolin were similar in the control and cytokine-treated tissues. Further, the attenuated relaxation to isoproterenol and PGE2 was ablated in the IL-1beta-treated TSM that were pretreated with either the muscarinic M2-receptor antagonist, methoctramine (10(-6) M), or pertussis toxin (100 ng/ml). Moreover, Western immunoblot analysis demonstrated that: (a) Gi protein expression was significantly enhanced in membrane fractions isolated from IL-1beta-treated TSM; and (b) the latter was largely attributed to induced enhanced expression of the Gi alpha2 and Gi alpha3 subunits. Collectively, these observations provide new evidence demonstrating that IL-lbeta and TNF-alpha induce impaired receptor-coupled airway relaxation in naive TSM, and that the latter effect is associated with increased muscarinic M2-receptor/Gi protein-coupled expression and function.
Collapse
Affiliation(s)
- H Hakonarson
- Division of Pulmonary Medicine, Joseph Stokes, Jr. Research Institute, The Children's Hospital of Philadelphia, Pennsylvania 19104, USA
| | | | | | | |
Collapse
|