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Ito-Harashima S, Tsubouchi Y, Takada E, Kawanishi M, Yagi T. Development of a yeast reporter gene assay to detect ligands of freshwater cladoceran Daphnia magna ultraspiracle, a homolog of vertebrate retinoid X receptors. J Appl Toxicol 2023; 43:1447-1461. [PMID: 37078133 DOI: 10.1002/jat.4476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 04/16/2023] [Accepted: 04/17/2023] [Indexed: 04/21/2023]
Abstract
Endocrine-disrupting chemicals (EDCs) often affect homeostatic regulation in living organisms by directly acting on nuclear receptors (NRs). Retinoid X receptors (RXRs), the most highly conserved members of the NR superfamily during evolution, function as partners to form heterodimers with other NRs, such as retinoic acid, thyroid hormone, and vitamin D3 receptors. RXRs also homodimerize and induce the expression of target genes upon binding with their natural ligand, 9-cis-retinoic acid (9cRA), and typical EDCs organotin compounds, such as tributyltin and triphenyltin. In the present study, we established a new yeast reporter gene assay (RGA) to detect the ligands of freshwater cladoceran Daphnia magna ultraspiracle (Dapma-USP), a homolog of vertebrate RXRs. D. magna has been used as a representative crustacean species for aquatic EDC assessments in the Organization for Economic Corporation and Development test guidelines. Dapma-USP was expressed along with the Drosophila melanogaster steroid receptor coactivator Taiman in yeast cells carrying the lacZ reporter plasmid. The RGA for detecting agonist activity of organotins and o-butylphenol was improved by use of mutant yeast strains lacking genes encoding cell wall mannoproteins and/or plasma membrane drug efflux pumps as hosts. We also showed that a number of other human RXR ligands, phenol and bisphenol A derivatives, and terpenoid compounds such as 9c-RA exhibited antagonist activity on Dapma-USP. Our newly established yeast-based RGA system is valuable as the first screening tool to detect ligand substances for Dapma-USP and for evaluating the evolutionary divergence of the ligand responses of RXR homologs between humans and D. magna.
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Affiliation(s)
- Sayoko Ito-Harashima
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Osaka Metropolitan University, Sakai, Japan
| | - Yumiko Tsubouchi
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
| | - Eiji Takada
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
| | - Masanobu Kawanishi
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
- Department of Biological Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Japan
| | - Takashi Yagi
- Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Sakai, Japan
- Department of Biological Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Japan
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Sekito T, Sugimoto N, Ishimoto M, Kawano-Kawada M, Akiyama K, Nishimoto S, Sugahara T, Kakinuma Y. Tributyltin induces cell cycle arrest at G1 phase in the yeast Saccharomyces cerevisiae. J Toxicol Sci 2014; 39:311-7. [PMID: 24646713 DOI: 10.2131/jts.39.311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Tributyltin (TBT) has long been recognized as a major environmental pollutant that can cause significant damage to the cellular functions as well as disruption of endocrine homeostasis. TBT induces apoptosis accompanied by production of reactive oxygen species (ROS) in mammalian and yeast cells. We observed that the budding yeast cells exposed to this compound at low concentrations exhibited cell growth arrest, but not cell death. Flow cytometric analysis of yeast cells without synchronization and morphological assessment of cells synchronized at M phase by nocodazole treatment indicated that TBT-exposed Saccharomyces cerevisiae cells were arrested at G1 phase of the cell cycle. This arrest was recovered by the addition of N-acetylcysteine, suggesting the involvement of ROS production by TBT. This is the first study to evaluate the action of TBT on cell cycle events.
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Bernat P, Gajewska E, Szewczyk R, Słaba M, Długoński J. Tributyltin (TBT) induces oxidative stress and modifies lipid profile in the filamentous fungus Cunninghamella elegans. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:4228-35. [PMID: 24306727 PMCID: PMC3945233 DOI: 10.1007/s11356-013-2375-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 11/14/2013] [Indexed: 05/24/2023]
Abstract
To investigate the response of the tributyltin-degrading fungal strain Cunninghamella elegans to the organotin, a comparative lipidomics strategy was employed using an LC/MS-MS technique. A total of 49 lipid species were identified. Individual phospholipids were then quantified using a multiple reaction monitoring method. Tributyltin (TBT) caused a decline in the amounts of many molecular species of phosphatidylethanolamine or phosphatidylserine and an increase in the levels of phosphatidic acid, phosphatidylinositol and phosphatidylcholine. In the presence of TBT, it was observed that overall unsaturation was lower than in the control. Lipidome data were analyzed using principal component analysis, which confirmed the compositional changes in membrane lipids in response to TBT. Additionally, treatment of fungal biomass with butyltin led to a significant increase in lipid peroxidation. It is suggested that modification of the phospholipids profile and lipids peroxidation may reflect damage to mycelium caused by TBT.
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Affiliation(s)
- Przemysław Bernat
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Ewa Gajewska
- Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Rafał Szewczyk
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Mirosława Słaba
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Jerzy Długoński
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
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Sukhanova EI, Rogov AG, Severin FF, Zvyagilskaya RA. Phenoptosis in yeasts. BIOCHEMISTRY (MOSCOW) 2014; 77:761-75. [PMID: 22817540 DOI: 10.1134/s0006297912070097] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The current view on phenoptosis and apoptosis as genetic programs aimed at eliminating potentially dangerous organisms and cells, respectively, is given. Special emphasis is placed on apoptosis (phenoptosis) in yeasts: intracellular defects and a plethora of external stimuli inducing apoptosis in yeasts; distinctive morphological and biochemical hallmarks accompanying apoptosis in yeasts; pro- and antiapoptotic factors involved in yeast apoptosis signaling; consecutive stages of apoptosis from external stimulus to the cell death; a prominent role of mitochondria and other organelles in yeast apoptosis; possible pathways for release of apoptotic factors from the intermembrane mitochondrial space into the cytosol are described. Using some concrete examples, the obvious physiological importance and expediency of altruistic death of yeast cells is shown. Poorly known aspects of yeast apoptosis and prospects for yeast apoptosis study are defined.
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Affiliation(s)
- E I Sukhanova
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, 119071, Russia
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Tsiatsiani L, Timmerman E, De Bock PJ, Vercammen D, Stael S, van de Cotte B, Staes A, Goethals M, Beunens T, Van Damme P, Gevaert K, Van Breusegem F. The Arabidopsis metacaspase9 degradome. THE PLANT CELL 2013; 25:2831-47. [PMID: 23964026 PMCID: PMC3784583 DOI: 10.1105/tpc.113.115287] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Metacaspases are distant relatives of the metazoan caspases, found in plants, fungi, and protists. However, in contrast with caspases, information about the physiological substrates of metacaspases is still scarce. By means of N-terminal combined fractional diagonal chromatography, the physiological substrates of metacaspase9 (MC9; AT5G04200) were identified in young seedlings of Arabidopsis thaliana on the proteome-wide level, providing additional insight into MC9 cleavage specificity and revealing a previously unknown preference for acidic residues at the substrate prime site position P1'. The functionalities of the identified MC9 substrates hinted at metacaspase functions other than those related to cell death. These results allowed us to resolve the substrate specificity of MC9 in more detail and indicated that the activity of phosphoenolpyruvate carboxykinase 1 (AT4G37870), a key enzyme in gluconeogenesis, is enhanced upon MC9-dependent proteolysis.
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Affiliation(s)
- Liana Tsiatsiani
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Evy Timmerman
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Pieter-Jan De Bock
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Dominique Vercammen
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Simon Stael
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Brigitte van de Cotte
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - An Staes
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Marc Goethals
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Tine Beunens
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Petra Van Damme
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Kris Gevaert
- Department of Medical Protein Research, VIB, 9000 Ghent, Belgium
- Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Frank Van Breusegem
- Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Address correspondence to
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Fukushima K, Kumar SD, Suzuki S. YgiW homologous gene from Pseudomonas aeruginosa 25W is responsible for tributyltin resistance. J GEN APPL MICROBIOL 2013; 58:283-9. [PMID: 22990488 DOI: 10.2323/jgam.58.283] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A tributyltin (TBT) resistance gene was isolated from the TBT-resistant marine origin bacterium Pseudomonas aeruginosa 25W. This gene was identical to PA0320 deposited in the P. aeruginosa PAO1 database (http://www.pseudomonas.com). The deduced amino acid sequence of PA0320 appears to be homologous to the YgiW proteins of Escherichia coli and Salmonella enterica. The deletion mutant of PA0320 showed a reduction of growth rate in the presence of TBT. A susceptibility test to cadmium, mercury, hydrogen peroxide and acidic pH in the deletion mutant showed an increasing susceptibility to them. PA0320 plays a certain role in stress tolerance against TBT as well as in stressors producing reactive oxygen species.
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Affiliation(s)
- Koh Fukushima
- Center for Marine Environmental Studies (CMES), Ehime University, Matsuyama, Ehime 790-8577, Japan
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Akiyama K, Iwaki T, Sugimoto N, Chardwiriyapreecha S, Kawano M, Nishimoto S, Sugahara T, Sekito T, Kakinuma Y. Bfr1p is responsible for tributyltin resistance in Schizosaccharomyces pombe. J Toxicol Sci 2011; 36:117-20. [PMID: 21297349 DOI: 10.2131/jts.36.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
ATP-binding cassette (ABC) transporter plays an important role for resistance against xenobiotics. There are eleven ABC transporter genes in the genome of fission yeast Schizosaccharomyces pombe. We examined the role of ABC transporter against the toxicity of tributyltin chloride (TBT), a widespread environmental pollutant, in cell growth. Among individual ABC transporter mutants, the growth of a mutant deficient in Bfr1p, a plasma membrane-embedded transporter, was extremely sensitive to TBT. The lethal TBT concentration inducing 50% of cell death (LC(50)) was 25 µM for the parent strain and 10.2 µM for the bfr1∆ mutant. Thus, Bfr1p was responsible for TBT resistance in S. pombe.
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Abstract
Metacaspases are cysteine-dependent proteases found in protozoa, fungi and plants and are distantly related to metazoan caspases. Although metacaspases share structural properties with those of caspases, they lack Asp specificity and cleave their targets after Arg or Lys residues. Studies performed over the past 10 years have demonstrated that metacaspases are multifunctional proteases essential for normal physiology of non-metazoan organisms. This article provides a comprehensive overview of the metacaspase function and molecular regulation during programmed cell death, stress and cell proliferation, as well as an analysis of the first metacaspase-mediated proteolytic pathway. To prevent further misapplication of caspase-specific molecular probes for measuring and inhibiting metacaspase activity, we provide a list of probes suitable for metacaspases.
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