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Talmon M, Massara E, Quaregna M, De Battisti M, Boccafoschi F, Lecchi G, Puppo F, Bettega Cajandab MA, Salamone S, Bovio E, Boldorini R, Riva B, Pollastro F, Fresu LG. Bitter taste receptor (TAS2R) 46 in human skeletal muscle: expression and activity. Front Pharmacol 2023; 14:1205651. [PMID: 37771728 PMCID: PMC10522851 DOI: 10.3389/fphar.2023.1205651] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 07/27/2023] [Indexed: 09/30/2023] Open
Abstract
Bitter taste receptors are involved not only in taste perception but in various physiological functions as their anatomical location is not restricted to the gustatory system. We previously demonstrated expression and activity of the subtype hTAS2R46 in human airway smooth muscle and broncho-epithelial cells, and here we show its expression and functionality in human skeletal muscle cells. Three different cellular models were used: micro-dissected human skeletal tissues, human myoblasts/myotubes and human skeletal muscle cells differentiated from urine stem cells of healthy donors. We used qPCR, immunohistochemistry and immunofluorescence analysis to evaluate gene and protein hTAS2R46 expression. In order to explore receptor activity, cells were incubated with the specific bitter ligands absinthin and 3ß-hydroxydihydrocostunolide, and calcium oscillation and relaxation were evaluated by calcium imaging and collagen assay, respectively, after a cholinergic stimulus. We show, for the first time, experimentally the presence and functionality of a type 2 bitter receptor in human skeletal muscle cells. Given the tendentially protective role of the bitter receptors starting from the oral cavity and following also in the other ectopic sites, and given its expression already at the myoblast level, we hypothesize that the bitter receptor can play an important role in the development, maintenance and in the protection of muscle tissue functions.
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Affiliation(s)
- Maria Talmon
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Erika Massara
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Martina Quaregna
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Marta De Battisti
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Francesca Boccafoschi
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Giulia Lecchi
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Federico Puppo
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | | | - Stefano Salamone
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Enrica Bovio
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Renzo Boldorini
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Beatrice Riva
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Luigia G. Fresu
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
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Talmon M, Percio M, Obeng JA, Ruffinatti FA, Sola D, Sainaghi PP, Bellis E, Cusinato S, Ianniello A, Fresu LG. Transcriptomic profile comparison of monocytes from rheumatoid arthritis patients in treatment with methotrexate, anti-TNFa, abatacept or tocilizumab. PLoS One 2023; 18:e0282564. [PMID: 36877690 PMCID: PMC9987802 DOI: 10.1371/journal.pone.0282564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 02/20/2023] [Indexed: 03/07/2023] Open
Abstract
It is well documented that patients affected by rheumatoid arthritis (RA) have distinct susceptibility to the different biologic DMARDs available on the market, probably because of the many facets of the disease. Monocytes are deeply involved in the pathogenesis of RA and we therefore evaluated and compared the transcriptomic profile of monocytes isolated from patients on treatment with methotrexate alone or in combination with tocilizumab, anti-TNFα or abatacept and from healthy donors. Whole-genome transcriptomics yielded a list of regulated genes by Rank Product statistics and DAVID was then used for functional annotation enrichment analysis. Last, data were validated by qRT-PCR. Abatacept, tocilizumab and anti-TNFa cohorts were separately compared with methotrexate, leading to the identification of 78, 6, and 436 differentially expressed genes, respectively. The upper-most ranked genes were related to inflammatory processes and immune responses. Such an approach draws the genomic profile of monocytes in treated RA patients and lays the basis for finding gene signature for tailored therapeutic choices.
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Affiliation(s)
- Maria Talmon
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Marcella Percio
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Joyce Afrakoma Obeng
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | | | - Daniele Sola
- Struttura Complessa Allergologia ed Immunologia, CAAD Ipazia, Azienda Ospedaliero-Universitaria Maggiore della Carità, Novara, Italy
| | - Pier Paolo Sainaghi
- Struttura Complessa Allergologia ed Immunologia, CAAD Ipazia, Azienda Ospedaliero-Universitaria Maggiore della Carità, Novara, Italy
- Department of Translational Medicine, School of Medicine, University of Piemonte Orientale, Novara, Italy
| | - Emanuela Bellis
- Day Hospital Multidisciplinare—Struttura Complessa di Nefrologia e Dialisi, Ospedale di Borgomanero, Borgomanero, Italy
| | - Stefano Cusinato
- Day Hospital Multidisciplinare—Struttura Complessa di Nefrologia e Dialisi, Ospedale di Borgomanero, Borgomanero, Italy
| | - Aurora Ianniello
- Day Hospital Multidisciplinare—Struttura Complessa di Nefrologia e Dialisi, Ospedale di Borgomanero, Borgomanero, Italy
| | - Luigia G. Fresu
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Novara, Italy
- * E-mail:
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Talmon M, Bosso L, Quaregna M, Lopatriello A, Rossi S, Gavioli D, Marotta P, Caprioglio D, Boldorini R, Miggiano R, Fresu LG, Pollastro F. Correction to Anti-inflammatory Activity of Absinthin and Derivatives in Human Broncho-Epithelial Cells. J Nat Prod 2020; 83:2815-2816. [PMID: 32876446 DOI: 10.1021/acs.jnatprod.0c00927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Talmon M, Bosso L, Quaregna M, Lopatriello A, Rossi S, Gavioli D, Marotta P, Caprioglio D, Boldorini R, Miggiano R, Fresu LG, Pollastro F. Anti-inflammatory Activity of Absinthin and Derivatives in Human Bronchoepithelial Cells. J Nat Prod 2020; 83:1740-1750. [PMID: 32496797 DOI: 10.1021/acs.jnatprod.9b00685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bitter taste receptors (hTAS2R) are expressed ectopically in various tissues, raising the possibility of a pharmacological exploitation. This seems of particular relevance in airways, since hTAS2Rs are involved in the protection of the aerial tissues from infections and in bronchodilation. The bis-guaianolide absinthin (1), one of the most bitter compounds known, targets the hTAS2R46 bitter receptor. Absinthin (1), an unstable compound, readily turns into anabsinthin (2) with substantial retention of the bitter properties, and this compound was used as a starting material to explore the chemical space around the bis-guaianolide bitter pharmacophore. Capitalizing on the chemoselective opening of the allylic lactone ring, the esters 3 and 4, and the nor-azide 6 were prepared and assayed on human bronchoepithelial (BEAS-2B) cells expressing hTAS2R46. Anti-inflammatory activity was evaluated by measuring the expression of MUC5AC, iNOS, and cytokines, as well as the production of superoxide anion, qualifying the methyl ester 3 as the best candidate for additional studies.
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Affiliation(s)
- Maria Talmon
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Lorenza Bosso
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Martina Quaregna
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Annalisa Lopatriello
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - Silvia Rossi
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Daniele Gavioli
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Patrizia Marotta
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Diego Caprioglio
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Renzo Boldorini
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Riccardo Miggiano
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Luigia G Fresu
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli 17, 28100 Novara, Italy
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
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Talmon M, Rossi S, Lim D, Pollastro F, Palattella G, Ruffinatti FA, Marotta P, Boldorini R, Genazzani AA, Fresu LG. Absinthin, an agonist of the bitter taste receptor hTAS2R46, uncovers an ER-to-mitochondria Ca 2+-shuttling event. J Biol Chem 2019; 294:12472-12482. [PMID: 31248983 DOI: 10.1074/jbc.ra119.007763] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/17/2019] [Indexed: 01/04/2023] Open
Abstract
Type 2 taste receptors (TAS2R) are G protein-coupled receptors first described in the gustatory system, but have also been shown to have extraoral localizations, including airway smooth muscle (ASM) cells, in which TAS2R have been reported to induce relaxation. TAS2R46 is an unexplored subtype that responds to its highly specific agonist absinthin. Here, we first demonstrate that, unlike other bitter-taste receptor agonists, absinthin alone (1 μm) in ASM cells does not induce Ca2+ signals but reduces histamine-induced cytosolic Ca2+ increases. To investigate this mechanism, we introduced into ASM cells aequorin-based Ca2+ probes targeted to the cytosol, subplasma membrane domain, or the mitochondrial matrix. We show that absinthin reduces cytosolic histamine-induced Ca2+ rises and simultaneously increases Ca2+ influx into mitochondria. We found that this effect is inhibited by the potent human TAS2R46 (hTAS2R46) antagonist 3β-hydroxydihydrocostunolide and is no longer evident in hTAS2R46-silenced ASM cells, indicating that it is hTAS2R46-dependent. Furthermore, these changes were sensitive to the mitochondrial uncoupler carbonyl cyanide p-(trifluoromethoxy)phenyl-hydrazone (FCCP); the mitochondrial calcium uniporter inhibitor KB-R7943 (carbamimidothioic acid); the cytoskeletal disrupter latrunculin; and an inhibitor of the exchange protein directly activated by cAMP (EPAC), ESI-09. Similarly, the β2 agonist salbutamol also could induce Ca2+ shuttling from cytoplasm to mitochondria, suggesting that this new mechanism might be generalizable. Moreover, forskolin and an EPAC activator mimicked this effect in HeLa cells. Our findings support the hypothesis that plasma membrane receptors can positively regulate mitochondrial Ca2+ uptake, adding a further facet to the ability of cells to encode complex Ca2+ signals.
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Affiliation(s)
- Maria Talmon
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli, 17-28100 Novara, Italy
| | - Silvia Rossi
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli, 17-28100 Novara, Italy
| | - Dmitry Lim
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio, 6-28100 Novara, Italy
| | - Federica Pollastro
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio, 6-28100 Novara, Italy
| | - Gioele Palattella
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli, 17-28100 Novara, Italy
| | - Federico A Ruffinatti
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio, 6-28100 Novara, Italy
| | - Patrizia Marotta
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio, 6-28100 Novara, Italy
| | - Renzo Boldorini
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli, 17-28100 Novara, Italy
| | - Armando A Genazzani
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio, 6-28100 Novara, Italy.
| | - Luigia G Fresu
- Department of Health Sciences, School of Medicine, University of Piemonte Orientale, Via Solaroli, 17-28100 Novara, Italy.
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Amoruso A, Gunella G, Rondano E, Bardelli C, Fresu LG, Ferrero V, Ribichini F, Vassanelli C, Brunelleschi S. Tobacco smoke affects expression of peroxisome proliferator-activated receptor-gamma in monocyte/macrophages of patients with coronary heart disease. Br J Pharmacol 2009; 158:1276-84. [PMID: 19814730 PMCID: PMC2782336 DOI: 10.1111/j.1476-5381.2009.00442.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 04/20/2009] [Accepted: 05/25/2009] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Tobacco smoke represents a relevant risk factor for coronary heart disease (CHD). Although peroxisome proliferator-activated receptor (PPAR)gamma activation reduces inflammation and atherosclerosis, expression of PPARgamma in cells and its modulation by smoking are poorly investigated. We previously reported that monocyte/macrophages from healthy smokers exhibited an enhanced constitutive expression of PPARgamma. Here, we evaluated PPARgamma expression and basal cytokine release in monocytes and monocyte-derived macrophages (MDMs) from 85 CHD patients, classified by their smoking habit (smokers, non-smokers and ex-smokers), and assessed the role of PPARgamma ligands in this context. EXPERIMENTAL APPROACH PPARgamma protein was detected by Western blot and semi-quantified by PPARgamma/beta-actin ratio; cytokine release was measured by elisa and nuclear factor-kappaB (NF-kappaB) translocation by electrophoretic mobility shift assays. KEY RESULTS As compared to the other groups, MDMs from smoker CHD patients exhibited a reduced PPARgamma/beta-actin ratio and an increased spontaneous release of tumour necrosis factor-alpha (TNF-alpha) and interleukin-6, but with no major variations in monocytes. In cells from selected CHD patients, rosiglitazone inhibited TNF-alpha release and NF-kappaB translocation induced by phorbol-12-myristate 13-acetate. The selective PPARgamma antagonist GW9662 reversed these effects, with some variations related to smoking habit. CONCLUSIONS AND IMPLICATIONS In CHD patients, exposure to tobacco smoke profoundly affected PPARgamma expression, and this was related to levels of secretion of pro-inflammatory cytokines. MDMs from CHD smokers showed the lowest PPARgamma expression and released more inflammatory cytokines. Moreover, rosiglitazone's ability to inhibit cytokine release and its reversal by GW9662 clearly indicated PPARgamma involvement in these changes in CHD patients.
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Affiliation(s)
- A Amoruso
- Department of Medical Sciences, School of Medicine, University of Piemonte Orientale A Avogadro, Novara, Italy
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Amoruso A, Bardelli C, Fresu LG, Palma A, Vidali M, Ferrero V, Ribichini F, Vassanelli C, Brunelleschi S. Enhanced Peroxisome Proliferator-Activated Receptor-γ Expression in Monocyte/Macrophages from Coronary Artery Disease Patients and Possible Gender Differences. J Pharmacol Exp Ther 2009; 331:531-8. [PMID: 19644041 DOI: 10.1124/jpet.109.154419] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Angela Amoruso
- Department of Medical Sciences, University A Avogadro, Novara, Italy
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Desole MS, Miele M, Esposito G, Fresu LG, Migheli R, Zangani D, Sircana S, Grella G, Miele E. Neuronal antioxidant system and MPTP-induced oxidative stress in the striatum and brain stem of the rat. Pharmacol Biochem Behav 1995; 51:581-92. [PMID: 7675829 DOI: 10.1016/0091-3057(94)00401-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Levels of ascorbic acid (AA), dehydroascorbic acid (DHAA), glutathione (GSH), uric acid, dopamine (DA), dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA), 3-methoxytyramine (3-MT), noradrenaline (NA), 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), and 1-methyl-4-phenylpyridinium ion (MPP+) were determined in the striatum, striatal synaptosomes, and/or brain stem of 3- and 6-month-old male Wistar rats given MPTP 35-52 mg/kg IP. In older rats, MPTP 35 mg/kg caused a 38% death rate within 15 min-12 h. Levels of MPTP and MPP+ in the striatum, synaptosomes, and brain stem were directly correlated with the absolute MPTP dose/rat. MPTP decreased striatal DA metabolites and NA levels in the striatum and brain stem, and increased uric acid levels in all regions in all rats. All these changes were significantly correlated with MPP+ levels. GSH levels were increased in younger rats and decreased in older rats. AA oxidation was increased mainly in older rats. We conclude that acute lethality and regional brain MPTP and MPP+ levels depend upon the absolute dose of MPTP/rat rather than the relative dose/kg. In younger rats, the neuronal antioxidant GSH system is more efficient than in older rats, in which the response to MPP(+)-induced oxidative stress also involves AA oxidation. The increase in uric acid levels provides further evidence for a mechanism of MPTP neurotoxicity involving oxidative stress mediated by xanthine oxidase.
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Affiliation(s)
- M S Desole
- Institute of Pharmacology, University of Sassari, Italy
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