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Poirier N, Ménétrier F, Moreno J, Boichot V, Heydel JM, Didierjean C, Canivenc-Lavier MC, Canon F, Neiers F, Schwartz M. Rattus norvegicus Glutathione Transferase Omega 1 Localization in Oral Tissues and Interactions with Food Phytochemicals. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5887-5897. [PMID: 38441878 DOI: 10.1021/acs.jafc.4c00483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Glutathione transferases are xenobiotic-metabolizing enzymes with both glutathione-conjugation and ligandin roles. GSTs are present in chemosensory tissues and fluids of the nasal/oral cavities where they protect tissues from exogenous compounds, including food molecules. In the present study, we explored the presence of the omega-class glutathione transferase (GSTO1) in the rat oral cavity. Using immunohistochemistry, GSTO1 expression was found in taste bud cells of the tongue epithelium and buccal cells of the oral epithelium. Buccal and lingual extracts exhibited thiol-transferase activity (4.9 ± 0.1 and 1.8 ± 0.1 μM/s/mg, respectively). A slight reduction from 4.9 ± 0.1 to 4.2 ± 0.1 μM/s/mg (p < 0.05; Student's t test) was observed in the buccal extract with 100 μM GSTO1-IN-1, a specific inhibitor of GSTO1. RnGSTO1 exhibited the usual activities of omega GSTs, i.e., thiol-transferase (catalytic efficiency of 8.9 × 104 M-1·s-1), and phenacyl-glutathione reductase (catalytic efficiency of 8.9 × 105 M-1·s-1) activities, similar to human GSTO1. RnGSTO1 interacts with food phytochemicals, including bitter compounds such as luteolin (Ki = 3.3 ± 1.9 μM). Crystal structure analysis suggests that luteolin most probably binds to RnGSTO1 ligandin site. Our results suggest that GSTO1 could interact with food phytochemicals in the oral cavity.
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Affiliation(s)
- Nicolas Poirier
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Franck Ménétrier
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Jade Moreno
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Valentin Boichot
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Jean-Marie Heydel
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | | | | | - Francis Canon
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Fabrice Neiers
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
| | - Mathieu Schwartz
- CSGA, INRAE, CNRS, University of Burgundy, Institut Agro, Dijon 21065, France
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Schwartz M, Boichot V, Fraichard S, Muradova M, Senet P, Nicolai A, Lirussi F, Bas M, Canon F, Heydel JM, Neiers F. Role of Insect and Mammal Glutathione Transferases in Chemoperception. Biomolecules 2023; 13:biom13020322. [PMID: 36830691 PMCID: PMC9953322 DOI: 10.3390/biom13020322] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
Glutathione transferases (GSTs) are ubiquitous key enzymes with different activities as transferases or isomerases. As key detoxifying enzymes, GSTs are expressed in the chemosensory organs. They fulfill an essential protective role because the chemosensory organs are located in the main entry paths of exogenous compounds within the body. In addition to this protective function, they modulate the perception process by metabolizing exogenous molecules, including tastants and odorants. Chemosensory detection involves the interaction of chemosensory molecules with receptors. GST contributes to signal termination by metabolizing these molecules. By reducing the concentration of chemosensory molecules before receptor binding, GST modulates receptor activation and, therefore, the perception of these molecules. The balance of chemoperception by GSTs has been shown in insects as well as in mammals, although their chemosensory systems are not evolutionarily connected. This review will provide knowledge supporting the involvement of GSTs in chemoperception, describing their localization in these systems as well as their enzymatic capacity toward odorants, sapid molecules, and pheromones in insects and mammals. Their different roles in chemosensory organs will be discussed in light of the evolutionary advantage of the coupling of the detoxification system and chemosensory system through GSTs.
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Affiliation(s)
- Mathieu Schwartz
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Valentin Boichot
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Stéphane Fraichard
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Mariam Muradova
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Patrick Senet
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS, Université de Bourgogne Franche-Comté, 21078 Dijon, France
| | - Adrien Nicolai
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS, Université de Bourgogne Franche-Comté, 21078 Dijon, France
| | - Frederic Lirussi
- UMR 1231, Lipides Nutrition Cancer, INSERM, 21000 Dijon, France
- UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, 25000 Besançon, France
- Plateforme PACE, Laboratoire de Pharmacologie-Toxicologie, Centre Hospitalo-Universitaire Besançon, 25000 Besançon, France
| | - Mathilde Bas
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Francis Canon
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Jean-Marie Heydel
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Fabrice Neiers
- Laboratory: Flavour Perception: Molecular Mechanims (Flavours), INRAE, CNRS, Institut Agro, Université de Bourgogne Franche-Comté, 21000 Dijon, France
- Correspondence:
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Schwartz M, Brignot H, Feron G, Hummel T, Zhu Y, von Koskull D, Heydel JM, Lirussi F, Canon F, Neiers F. Role of human salivary enzymes in bitter taste perception. Food Chem 2022; 386:132798. [PMID: 35344726 DOI: 10.1016/j.foodchem.2022.132798] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 11/25/2022]
Abstract
The molecules that elicit taste sensation are perceived by interacting with the taste receptors located in the taste buds. Enzymes involved in the detoxification processes are found in saliva as well as in type II cells, where taste receptors, including bitter taste receptors, are located. These enzymes are known to interact with a large panel of molecules. To explore a possible link between these enzymes and bitter taste perception, we demonstrate that salivary glutathione transferases (GSTA1 and GSTP1) can metabolize bitter molecules. To support these abilities, we solve three X-ray structures of these enzymes in complexes with isothiocyanates. Salivary GSTA1 and GSTP1 are expressed in a large panel of subjects. Additionally, GSTA1 levels in the saliva of people suffering from taste disorders are significantly lower than those in the saliva of the control group.
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Affiliation(s)
- Mathieu Schwartz
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Hélène Brignot
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Gilles Feron
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Thomas Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Yunmeng Zhu
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Dorothee von Koskull
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Jean-Marie Heydel
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Frédéric Lirussi
- PACE, Plateau d'Analyses Chromatographiques et Elémentaires, Department of Pharmacology-Toxicology & Metabolomics, University hospital of Besançon (CHU), 2 Boulevard Fleming, 25030, BESANCON, France; INSERM UMR1231, LipSTIC, University of Burgundy Franche-Comté, Dijon, France
| | - Francis Canon
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France
| | - Fabrice Neiers
- Université de Bourgogne-Franche Comté, CNRS, INRAE, Centre des Sciences du Goût et de l'Alimentation (CSGA), Dijon, France.
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Morzel M, Neyraud E, Brignot H, Ducoroy P, Jeannin A, Lucchi G, Truntzer C, Canlet C, Tremblay-Franco M, Hirtz C, Gaillard S, Peretti N, Feron G. Multi-omics profiling reveals that eating difficulties developed consecutively to artificial nutrition in the neonatal period are associated to specific saliva composition. J Proteomics 2015; 128:105-12. [DOI: 10.1016/j.jprot.2015.07.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/06/2015] [Accepted: 07/23/2015] [Indexed: 01/25/2023]
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Kudo H, Doi Y, Ueda H, Kaeriyama M. Molecular characterization and histochemical demonstration of salmon olfactory marker protein in the olfactory epithelium of lacustrine sockeye salmon (Oncorhynchus nerka). Comp Biochem Physiol A Mol Integr Physiol 2009; 154:142-50. [PMID: 19501666 DOI: 10.1016/j.cbpa.2009.05.123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Revised: 05/27/2009] [Accepted: 05/27/2009] [Indexed: 10/20/2022]
Abstract
Despite the importance of olfactory receptor neurons (ORNs) for homing migration, the expression of olfactory marker protein (OMP) is not well understood in ORNs of Pacific salmon (genus Oncorhynchus). In this study, salmon OMP was characterized in the olfactory epithelia of lacustrine sockeye salmon (O. nerka) by molecular biological and histochemical techniques. Two cDNAs encoding salmon OMP were isolated and sequenced. These cDNAs both contained a coding region encoding 173 amino acid residues, and the molecular mass of the two proteins was calculated to be 19,581.17 and 19,387.11Da, respectively. Both amino acid sequences showed marked homology (90%). The protein and nucleotide sequencing demonstrates the existence of high-level homology between salmon OMPs and those of other teleosts. By in situ hybridization using a digoxigenin-labeled salmon OMP cRNA probe, signals for salmon OMP mRNA were observed preferentially in the perinuclear regions of the ORNs. By immunohistochemistry using a specific antibody to salmon OMP, OMP-immunoreactivities were noted in the cytosol of those neurons. The present study is the first to describe cDNA cloning of OMP in salmon olfactory epithelium, and indicate that OMP is a useful molecular marker for the detection of the ORNs in Pacific salmon.
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Affiliation(s)
- H Kudo
- Laboratory of Strategic Studies on Marine Bioresource Conservation and Management, Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan.
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Shiraishi M, Doi Y, Kayashima K, Fujimoto S. Antioxidant enzyme immunoreactivity in rat von Ebner gland after nickel treatment. Med Mol Morphol 2008; 41:44-52. [PMID: 18470680 DOI: 10.1007/s00795-007-0386-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Accepted: 10/26/2007] [Indexed: 11/26/2022]
Abstract
Our study was designed to clarify the role of antioxidant enzymes in the rat von Ebner gland during acute nickel toxicity. After treatment with nickel acetate, we monitored ultrastructural alterations in acinar and ductal cells, immunohistochemical staining for glutathione peroxidase (GPx) and glutathione S-transferases (GST mu and GST pi), and immunoreactivity for malondialdehyde (MDA). Immunoreactivity for MDA was present only in the acinar cells, and it was enhanced at 3 h after Ni treatment. In contrast, immunoreactivities for GPx and GSTs did not change in acinar cells but significantly increased in ductal cells after Ni treatment. Cytoplasmic vacuoles increased in acinar cells at 3 h after Ni treatment, but they almost completely disappeared at 24 h. No morphological changes were observed in taste bud cells from Ni-treated rats. Because lipid peroxidation, as monitored by immunoreactivity for MDA, was only transiently increased in the acinar cells, the enhanced antioxidant enzyme immunoreactivity in ductal cells of the von Ebner gland plays a crucial role in the self-defense system against nickel toxicity in the rat oral cavity.
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Affiliation(s)
- Mie Shiraishi
- Graduate School of Health and Nutritional Sciences, Nakamura Gakuen University, Jonan-ku, Fukuoka 814-0104, Japan
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Ganchrow D, Ganchrow JR, Verdin-Alcazar M, Whitehead MC. Brain-derived neurotrophic factor-, neurotrophin-3-, and tyrosine kinase receptor-like immunoreactivity in lingual taste bud fields of mature hamster after sensory denervation. J Comp Neurol 2003; 455:25-39. [PMID: 12454994 DOI: 10.1002/cne.2164] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Unlike lingual taste buds in most mammals, fungiform buds on the anterior tongue of mature hamster survive sensory denervation. The role of the neurotrophin ligands, brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3), and their respective tyrosine kinase (Trk) receptors, TrkB and TrkC, in denervated taste buds is not known. The present report investigates changes in the degree of gemmal cell immunoreactivity (IR) (i.e., number of immunoreactive cells/bud profile) and density of nerve fiber-IR of these markers in unilaterally denervated mature hamsters. The fungiform bud field after chorda tympani/lingual nerve resection is compared with the nerve-dependent, posterior tongue foliate and circumvallate bud fields after glossopharyngeal nerve resection. Four weeks post lesion, the number of denervated fungiform buds matched that on the unoperated side, whereas denervated foliate and circumvallate bud counts decreased by 72% and 38%, respectively. In taste buds that survived on the posterior tongue, the degree of foliate bud cell BDNF-, NT-3-, and TrkB-like IR, and circumvallate bud cell BDNF- and NT-3-like IR, significantly decreased compared with the unoperated side. In contrast, for anterior tongue fungiform bud cells, the degree of neurotrophin- and receptor-like IR was relatively less affected: NT-3- and TrkB-like IR were unchanged; BDNF-like IR, although significantly decreased, was also maintained. Moreover, TrkB-like fiber IR was essentially eliminated within and surrounding fungiform buds. Hence, NT-3-, BDNF-, and TrkB-like IR in fungiform gemmal cells may reflect an autocrine capacity promoting survival. Because TrkC-like IR in bud cells is absent (i.e., immunonegative), and sparse in fibers intragemmally and perigemmally, NT-3 may also bind to bud cell TrkB so as to sustain fungiform gemmal cell viability post denervation.
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Affiliation(s)
- Donald Ganchrow
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv 69978, Tel-Aviv, Israel
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Morita M, Kudo H, Doi Y, Hirano T, Ikemura K, Fujimoto S. Enhanced immunocytochemical expression of antioxidant enzymes in rat submandibular gland after normobaric oxygenation. THE ANATOMICAL RECORD 2002; 268:371-80. [PMID: 12420285 DOI: 10.1002/ar.10171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In order to clarify the role of antioxidant enzymes in the male rat submandibular gland against short-term normobaric oxygenation, we performed immunocytochemical staining of manganese-containing superoxide dismutase (Mn-SOD), copper- and zinc-containing SOD (Cu/Zn-SOD), catalase (CAT), glutathione peroxidase, and glutathione S-transferases (GST alpha, GST mu, and GST pi) between days 1 and 7 after normobaric oxygenation. Ultrastructural alterations and immunoreactivities for malondialdehyde (MDA), a lipid peroxidation-related molecule, of the acinar and ductal cells after the oxygenation were also investigated. Immunoreactivity for MDA was exhibited in the acinar cells throughout the experiment. On the other hand, immunoreactivity for the SODs, CAT, and GSTs was not altered, when compared to that of controls, but was significantly elevated in the granular, striated, and excretory ductal cells. Since an increase of lipid peroxidation as indicated by enhanced immunoreactivity for MDA was detected in the acinar and intercalated ductal cells, the results indicate that the enhanced antioxidant enzymes in the granular, striated, and excretory ductal cells play a crucial role in the self-defense system of the male rat submandibular gland against normobaric oxygenation.
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Affiliation(s)
- Miyako Morita
- Department of Oral and Maxillofacial Surgery, University of Occupational and Environmental Health, School of Medicine, Yahata Nishi-ku, Kitakyushu, Japan.
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Mochida K, Matsubara T, Kudo H, Andoh T, Ueda H, Adachi S, Yamauchi K. Molecular cloning and immunohistochemical localization of ubiquitin C-Terminal hydrolase expressed in testis of a teleost, the Nile Tilapia, Oreochromis niloticus. THE JOURNAL OF EXPERIMENTAL ZOOLOGY 2002; 293:368-83. [PMID: 12210120 DOI: 10.1002/jez.10136] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We previously produced four monoclonal antibodies to testicular proteins of a teleost, the Nile tilapia. One of the monoclonal antibodies, TAT(Testicular Antigen of Tilapia)-10, recognizes a Mr=27,000 protein (27 kD protein), which is present in A and early B type spermatogonia, spermatids, and spermatozoa in testis. In order to clarify the function of this protein, molecular cloning was conducted. The cDNA for the 27 kD protein contains a complete open reading frame encoding 220 amino acid residues. The predicted amino acid sequence of the 27 kD protein was homologous to those of the ubiquitin carboxy-terminal hydrolases (UCH) reported in mammals. The measurement of the ubiquitin-releasing activity of the recombinant 27 kD protein revealed that the protein is the active form of UCH. Northern blot analysis showed that the UCH mRNA was expressed in ovary and brain in addition to the testis. Immunohistochemical study showed that, in brain, UCH was localized especially on the olfactory organ including the olfactory bulb and olfactory epithelium in olfactory rosetta, suggesting the involvement of the protein in chemoreceptive function. In the Tilapia ovary, UCH localized especially in pre-vitellogenic oocytes, suggesting that the enzyme activity could be important in oocyte growth. This is the first report for the cDNA cloning and cellular localization of UCH in fish. J. Exp. Zool. 293:368-383, 2002.
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Affiliation(s)
- Kazuhiko Mochida
- Hokkaido National Fisheries Research Institute, Kushiro, Hokkaido 085-0802, Japan
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