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Masanta S, Wiesyk A, Panja C, Pilch S, Ciesla J, Sipko M, De A, Enkhbaatar T, Maslanka R, Skoneczna A, Kucharczyk R. Fmp40 ampylase regulates cell survival upon oxidative stress by controlling Prx1 and Trx3 oxidation. Redox Biol 2024; 73:103201. [PMID: 38795545 PMCID: PMC11140801 DOI: 10.1016/j.redox.2024.103201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 05/28/2024] Open
Abstract
Reactive oxygen species (ROS), play important roles in cellular signaling, nonetheless are toxic at higher concentrations. Cells have many interconnected, overlapped or backup systems to neutralize ROS, but their regulatory mechanisms remain poorly understood. Here, we reveal an essential role for mitochondrial AMPylase Fmp40 from budding yeast in regulating the redox states of the mitochondrial 1-Cys peroxiredoxin Prx1, which is the only protein shown to neutralize H2O2 with the oxidation of the mitochondrial glutathione and the thioredoxin Trx3, directly involved in the reduction of Prx1. Deletion of FMP40 impacts a cellular response to H2O2 treatment that leads to programmed cell death (PCD) induction and an adaptive response involving up or down regulation of genes encoding, among others the catalase Cta1, PCD inducing factor Aif1, and mitochondrial redoxins Trx3 and Grx2. This ultimately perturbs the reduced glutathione and NADPH cellular pools. We further demonstrated that Fmp40 AMPylates Prx1, Trx3, and Grx2 in vitro and interacts with Trx3 in vivo. AMPylation of the threonine residue 66 in Trx3 is essential for this protein's proper endogenous level and its precursor forms' maturation under oxidative stress conditions. Additionally, we showed the Grx2 involvement in the reduction of Trx3 in vivo. Taken together, Fmp40, through control of the reduction of mitochondrial redoxins, regulates the hydrogen peroxide, GSH and NADPH signaling influencing the yeast cell survival.
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Affiliation(s)
- Suchismita Masanta
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Aneta Wiesyk
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Chiranjit Panja
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Sylwia Pilch
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Jaroslaw Ciesla
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Marta Sipko
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Abhipsita De
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Tuguldur Enkhbaatar
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Roman Maslanka
- Institute of Biology, College of Natural Sciences, University of Rzeszow, Rzeszow, Poland
| | - Adrianna Skoneczna
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland
| | - Roza Kucharczyk
- Institute of Biochemistry and Biophysics PAS, Warsaw, 02-106, Pawinskiego 5A, Poland.
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Alibayov B, Scasny A, Vidal AGJ, Murin L, Wong S, Edwards KS, Eichembaun Z, Punshon T, Jackson BP, Hopp MT, McDaniel LS, Akerley BJ, Imhof D, Vidal JE. Oxidation of hemoglobin in the lung parenchyma facilitates the differentiation of pneumococci into encapsulated bacteria. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.14.567109. [PMID: 38014009 PMCID: PMC10680745 DOI: 10.1101/2023.11.14.567109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Pneumococcal pneumonia causes cytotoxicity in the lung parenchyma but the underlying mechanism involves multiple factors contributing to cell death. Here, we discovered that hydrogen peroxide produced by Streptococcus pneumoniae (Spn-H 2 O 2 ) plays a pivotal role by oxidizing hemoglobin, leading to its polymerization and subsequent release of labile heme. At physiologically relevant levels, heme selected a population of encapsulated pneumococci. In the absence of capsule and Spn-H 2 O 2 , host intracellular heme exhibited toxicity towards pneumococci, thus acting as an antibacterial mechanism. Further investigation revealed that heme-mediated toxicity required the ABC transporter GlnPQ. In vivo experiments demonstrated that pneumococci release H 2 O 2 to cause cytotoxicity in bronchi and alveoli through the non-proteolytic degradation of intracellular proteins such as actin, tubulin and GAPDH. Overall, our findings uncover a mechanism of lung toxicity mediated by oxidative stress that favor the growth of encapsulated pneumococci suggesting a therapeutic potential by targeting oxidative reactions. Graphical abstract Highlights Oxidation of hemoglobin by Streptococcus pneumoniae facilitates differentiation to encapsulated pneumococci in vivo Differentiated S. pneumoniae produces capsule and hydrogen peroxide (Spn-H 2 O 2 ) as defense mechanism against host heme-mediated toxicity. Spn-H 2 O 2 -induced lung toxicity causes the oxidation and non-proteolytic degradation of intracellular proteins tubulin, actin, and GAPDH. The ABC transporter GlnPQ is a heme-binding complex that makes Spn susceptible to heme toxicity.
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Non-Toxic and Ultra-Small Biosilver Nanoclusters Trigger Apoptotic Cell Death in Fluconazole-Resistant Candida albicans via Ras Signaling. Biomolecules 2019; 9:biom9020047. [PMID: 30769763 PMCID: PMC6406502 DOI: 10.3390/biom9020047] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 01/23/2019] [Accepted: 01/23/2019] [Indexed: 01/01/2023] Open
Abstract
Silver-based nanostructures are suitable for many biomedical applications, but to be useful therapeutic agents, the high toxicity of these nanomaterials must be eliminated. Here, we biosynthesize nontoxic and ultra-small silver nanoclusters (rsAg@NCs) using metabolites of usnioid lichen (a symbiotic association of algae and fungi) that exhibit excellent antimicrobial activity against fluconazole (FCZ)-resistant Candida albicans that is many times higher than chemically synthesized silver nanoparticles (AgNPs) and FCZ. The rsAg@NCs trigger apoptosis via reactive oxygen species accumulation that leads to the loss of mitochondrial membrane potential, DNA fragmentation, chromosomal condensation, and the activation of metacaspases. The proteomic analysis clearly demonstrates that rsAg@NCs exposure significantly alters protein expression. Most remarkable among the down-regulated proteins are those related to glycolysis, metabolism, free radical scavenging, anti-apoptosis, and mitochondrial function. In contrast, proteins involved in plasma membrane function, oxidative stress, cell death, and apoptosis were upregulated. Eventually, we also established that the apoptosis-inducing potential of rsAg@NCs is due to the activation of Ras signaling, which confirms their application in combating FCZ-resistant C. albicans infections.
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El-Kashef N, Gomes I, Mercer-Chalmers-Bender K, Schneider PM, Rothschild MA, Juebner M. Comparative proteome analysis for identification of differentially abundant proteins in SIDS. Int J Legal Med 2017; 131:1597-1613. [DOI: 10.1007/s00414-017-1632-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 07/04/2017] [Indexed: 12/01/2022]
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Longo V, Ždralević M, Guaragnella N, Giannattasio S, Zolla L, Timperio AM. Proteome and metabolome profiling of wild-type and YCA1-knock-out yeast cells during acetic acid-induced programmed cell death. J Proteomics 2015; 128:173-88. [PMID: 26269384 DOI: 10.1016/j.jprot.2015.08.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/03/2015] [Accepted: 08/05/2015] [Indexed: 01/13/2023]
Abstract
UNLABELLED Caspase proteases are responsible for the regulated disassembly of the cell into apoptotic bodies during mammalian apoptosis. Structural homologues of the caspase family (called metacaspases) are involved in programmed cell death in single-cell eukaryotes, yet the molecular mechanisms that contribute to death are currently undefined. Recent evidence revealed that a programmed cell death process is induced by acetic acid (AA-PCD) in Saccharomyces cerevisiae both in the presence and absence of metacaspase encoding gene YCA1. Here, we report an unexpected role for the yeast metacaspase in protein quality and metabolite control. By using an "omics" approach, we focused our attention on proteins and metabolites differentially modulated en route to AA-PCD either in wild type or YCA1-lacking cells. Quantitative proteomic and metabolomic analyses of wild type and Δyca1 cells identified significant alterations in carbohydrate catabolism, lipid metabolism, proteolysis and stress-response, highlighting the main roles of metacaspase in AA-PCD. Finally, deletion of YCA1 led to AA-PCD pathway through the activation of ceramides, whereas in the presence of the gene yeast cells underwent an AA-PCD pathway characterized by the shift of the main glycolytic pathway to the pentose phosphate pathway and a proteolytic mechanism to cope with oxidative stress. SIGNIFICANCE The yeast metacaspase regulates both proteolytic activities through the ubiquitin-proteasome system and ceramide metabolism as revealed by proteome and metabolome profiling of YCA1-knock-out cells during acetic-acid induced programmed cell death.
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Affiliation(s)
- Valentina Longo
- Department of Ecology and Biology, "La Tuscia" University, Viterbo, Italy
| | - Maša Ždralević
- Institute of Biomembrane and Bioenergetics, CNR, Bari, Italy
| | | | | | - Lello Zolla
- Department of Ecology and Biology, "La Tuscia" University, Viterbo, Italy.
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Mechanisms and physiological impact of the dual localization of mitochondrial intermembrane space proteins. Biochem Soc Trans 2015; 42:952-8. [PMID: 25109985 DOI: 10.1042/bst20140104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Eukaryotic cells developed diverse mechanisms to guide proteins to more than one destination within the cell. Recently, the proteome of the IMS (intermembrane space) of mitochondria of yeast cells was identified showing that approximately 20% of all soluble IMS proteins are dually localized to the IMS, as well as to other cellular compartments. Half of these dually localized proteins are important for oxidative stress defence and the other half are involved in energy homoeostasis. In the present review, we discuss the mechanisms leading to the dual localization of IMS proteins and the implications for mitochondrial function.
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Rikhvanov EG, Fedoseeva IV, Varakina NN, Rusaleva TM, Fedyaeva AV. Mechanism of Saccharomyces cerevisiae yeast cell death induced by heat shock. Effect of cycloheximide on thermotolerance. BIOCHEMISTRY (MOSCOW) 2014; 79:16-24. [PMID: 24512659 DOI: 10.1134/s0006297914010039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The mechanism of yeast cell death induced by heat shock was found to be dependent on the intensity of heat exposure. Moderate (45°C) heat shock strongly increased the generation of reactive oxygen species (ROS) and cell death. Pretreatment with cycloheximide (at 30°C) suppressed cell death, but produced no effect on ROS production. The protective effect was absent if cycloheximide was added immediately before heat exposure and the cells were incubated with the drug during the heat treatment and recovery period. The rate of ROS production and protective effect of cycloheximide on viability were significantly decreased in the case of severe (50°C) heat shock. Treatment with cycloheximide at 39°C inhibited the induction of Hsp104 synthesis and suppressed the development of induced thermotolerance to severe shock (50°C), but it had no effect on induced thermotolerance to moderate (45°C) heat shock. At the same time, Hsp104 effectively protected cells from death independently of the intensity of heat exposure. These data indicate that moderate heat shock induced programmed cell death in the yeast cells, and cycloheximide suppressed this process by inhibiting general synthesis of proteins.
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Affiliation(s)
- E G Rikhvanov
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Division of the Russian Academy of Sciences, Irkutsk, 664033, Russia.
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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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Monici M, Cialdai F, Ranaldi F, Paoli P, Boscaro F, Moneti G, Caselli A. Effect of IR laser on myoblasts: a proteomic study. MOLECULAR BIOSYSTEMS 2014; 9:1147-61. [PMID: 23364335 DOI: 10.1039/c2mb25398d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Laser therapy is used in physical medicine and rehabilitation to accelerate muscle recovery and in sports medicine to prevent damages produced by metabolic disturbances and inflammatory reactions after heavy exercise. The aim of this research was to get insight into possible benefits deriving from the application of an advanced IR laser system to counteract deficits of muscle energy metabolism and stimulate the recovery of hypotrophic tissue. We studied the effect of IR laser treatment on proliferation, differentiation, cytoskeleton organization and global protein expression in C2C12 myoblasts. We found that laser treatment induced a decrease in the cell proliferation rate without affecting cell viability, while leading to cytoskeletal rearrangement and expression of the early differentiation marker MyoD. The differential proteome analysis revealed the up-regulation and/or modulation of many proteins known to be involved in cell cycle regulation, cytoskeleton organization and differentiation.
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Affiliation(s)
- Monica Monici
- ASAcampus Joint Laboratory, ASA Res. Div., Dept. Clinical Physiopathology, University of Florence, Italy
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Chiocchetti AG, Haslinger D, Boesch M, Karl T, Wiemann S, Freitag CM, Poustka F, Scheibe B, Bauer JW, Hintner H, Breitenbach M, Kellermann J, Lottspeich F, Klauck SM, Breitenbach-Koller L. Protein signatures of oxidative stress response in a patient specific cell line model for autism. Mol Autism 2014; 5:10. [PMID: 24512814 PMCID: PMC3931328 DOI: 10.1186/2040-2392-5-10] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 01/23/2014] [Indexed: 12/26/2022] Open
Abstract
Background Known genetic variants can account for 10% to 20% of all cases with autism spectrum disorders (ASD). Overlapping cellular pathomechanisms common to neurons of the central nervous system (CNS) and in tissues of peripheral organs, such as immune dysregulation, oxidative stress and dysfunctions in mitochondrial and protein synthesis metabolism, were suggested to support the wide spectrum of ASD on unifying disease phenotype. Here, we studied in patient-derived lymphoblastoid cell lines (LCLs) how an ASD-specific mutation in ribosomal protein RPL10 (RPL10[H213Q]) generates a distinct protein signature. We compared the RPL10[H213Q] expression pattern to expression patterns derived from unrelated ASD patients without RPL10[H213Q] mutation. In addition, a yeast rpl10 deficiency model served in a proof-of-principle study to test for alterations in protein patterns in response to oxidative stress. Methods Protein extracts of LCLs from patients, relatives and controls, as well as diploid yeast cells hemizygous for rpl10, were subjected to two-dimensional gel electrophoresis and differentially regulated spots were identified by mass spectrometry. Subsequently, Gene Ontology database (GO)-term enrichment and network analysis was performed to map the identified proteins into cellular pathways. Results The protein signature generated by RPL10[H213Q] is a functionally related subset of the ASD-specific protein signature, sharing redox-sensitive elements in energy-, protein- and redox-metabolism. In yeast, rpl10 deficiency generates a specific protein signature, harboring components of pathways identified in both the RPL10[H213Q] subjects’ and the ASD patients’ set. Importantly, the rpl10 deficiency signature is a subset of the signature resulting from response of wild-type yeast to oxidative stress. Conclusions Redox-sensitive protein signatures mapping into cellular pathways with pathophysiology in ASD have been identified in both LCLs carrying the ASD-specific mutation RPL10[H213Q] and LCLs from ASD patients without this mutation. At pathway levels, this redox-sensitive protein signature has also been identified in a yeast rpl10 deficiency and an oxidative stress model. These observations point to a common molecular pathomechanism in ASD, characterized in our study by dysregulation of redox balance. Importantly, this can be triggered by the known ASD-RPL10[H213Q] mutation or by yet unknown mutations of the ASD cohort that act upstream of RPL10 in differential expression of redox-sensitive proteins.
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Affiliation(s)
- Andreas G Chiocchetti
- Division of Molecular Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany.,Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria.,Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, J.W. Goethe University, Deutschordenstr. 50, 60528 Frankfurt am Main, Germany
| | - Denise Haslinger
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria.,Division of Molecular Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany.,Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, J.W. Goethe University, Deutschordenstr. 50, 60528 Frankfurt am Main, Germany
| | - Maximilian Boesch
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
| | - Thomas Karl
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
| | - Stefan Wiemann
- Division of Molecular Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Christine M Freitag
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, J.W. Goethe University, Deutschordenstr. 50, 60528 Frankfurt am Main, Germany
| | - Fritz Poustka
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, J.W. Goethe University, Deutschordenstr. 50, 60528 Frankfurt am Main, Germany
| | - Burghardt Scheibe
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
| | - Johann W Bauer
- Department of Dermatology, General Hospital Salzburg/PMU, Müllner-Hauptstr. 48, 5020 Salzburg, Austria
| | - Helmut Hintner
- Department of Dermatology, General Hospital Salzburg/PMU, Müllner-Hauptstr. 48, 5020 Salzburg, Austria
| | - Michael Breitenbach
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
| | - Josef Kellermann
- Max-Planck-Institute of Biochemistry, Protein Analysis Group, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Friedrich Lottspeich
- Max-Planck-Institute of Biochemistry, Protein Analysis Group, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Sabine M Klauck
- Division of Molecular Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Lore Breitenbach-Koller
- Department of Cell Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
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The phytoalexin camalexin induces fundamental changes in the proteome of Alternaria brassicicola different from those caused by brassinin. Fungal Biol 2014; 118:83-93. [DOI: 10.1016/j.funbio.2013.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 10/22/2013] [Accepted: 11/19/2013] [Indexed: 02/07/2023]
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Mohammadian J, Mansoori-Derakhshan S, Mohammadian M, Shekari-Khaniani M. Construction of Yeast Recombinant Expression Vector Containing Human Epidermal Growth Factor (hEGF). Adv Pharm Bull 2013; 3:473-6. [PMID: 24312882 PMCID: PMC3848235 DOI: 10.5681/apb.2013.079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Revised: 05/15/2013] [Accepted: 05/18/2013] [Indexed: 11/17/2022] Open
Abstract
PURPOSE The objective of this study was construction of recombinant hEGF-pPIC9 which may be used for expression of recombinant hEGF in following studies. METHODS EGF cDNA was purchased from Genecopoeia Company and used for PCR amplification. Prior to ligation, the PCR product and pPIC9 vector was digested with EcoRI and XhoI and ligated in pPIC9 vector and subjected to colony PCR screening and sequencing analysis. RESULTS PCR amplification of EGF cDNA using recombinant hEGF-pPIC9 vector as template was concluded in amplification of 197bp fragment. Construction of recombinant hEGF-pPIC9 of EGf gene was verified by PCR and sequencing. CONCLUSION Construction of Recombinant hEGF-pPIC9 was the primary stage for production and expression of EFG in the future study.
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Affiliation(s)
- Jamal Mohammadian
- Department of Clinical Biochemistry, Division of Medical Biotechnology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sima Mansoori-Derakhshan
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mahmoud Shekari-Khaniani
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Pedroso N, Gomes-Alves P, Marinho HS, Brito VB, Boada C, Antunes F, Herrero E, Penque D, Cyrne L. The plasma membrane-enriched fraction proteome response during adaptation to hydrogen peroxide in Saccharomyces cerevisiae. Free Radic Res 2012; 46:1267-79. [PMID: 22712517 DOI: 10.3109/10715762.2012.704997] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In Saccharomyces cerevisiae, adaptation to hydrogen peroxide (H₂O₂) decreases plasma membrane permeability to H₂O₂, changes its lipid composition and reorganizes ergosterol-rich microdomains by a still unknown mechanism. Here we show, by a quantitative analysis of the H₂O₂-induced adaptation effect on the S. cerevisiae plasma membrane-enriched fraction proteome, using two-dimensional gel electrophoresis, that 44 proteins are differentially expressed. Most of these proteins were regulated at a post-transcriptional level. Fourteen of these proteins contain redox-sensitive cysteine residues and nine proteins are associated with lipid and vesicle traffic. In particular, three proteins found in eisosomes and in the eisosome-associated membrane compartment occupied by Can1p were up-regulated (Pil1p, Rfs1p and Pst2p) during adaptation to H₂O₂. Survival studies after exposure to lethal H₂O₂ doses using yeast strains bearing a gene deletion corresponding to proteins associated to lipid and vesicle traffic demonstrated for the first time that down-regulation of Kes1p, Vps4p and Ynl010wp and up-regulation of Atp1 and Atp2 increases resistance to H₂O₂. Moreover, for the pil1Δ strain, H₂O₂ at low levels produces a hormetic effect by increasing proliferation. In conclusion, these data further confirms the plasma membrane as an active cellular site during adaptation to H₂O₂ and shows that proteins involved in lipid and vesicle traffic are important mediators of H₂O₂ adaptation.
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Affiliation(s)
- Nuno Pedroso
- Departamento de Química e Bioquímica & Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Portugal
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Cytoprotective activity of minocycline includes improvement of mitochondrial coupling: the importance of minocycline concentration and the presence of VDAC. J Bioenerg Biomembr 2012; 44:297-307. [PMID: 22576350 DOI: 10.1007/s10863-012-9441-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 12/14/2011] [Indexed: 12/17/2022]
Abstract
Available data indicate that minocycline, an antibiotic of the tetracycline family, has cytoprotective properties due to a direct interaction with mitochondria. Yet, the data in the case of isolated mitochondria suggest discrepant or even detrimental effect(s) of the interaction. We have studied the cytoprotective activity displayed by minocycline in the case of the yeast Saccharomyces cerevisiae cells pretreated with H₂O₂. We demonstrated that the activity of minocycline required the presence of VDAC (voltage-dependent anion-selective channel) and provided distinct improvement of mitochondrial coupling. In the case of isolated mitochondria, we verified that minocycline exhibited uncoupler activity when applied in micromolar concentrations. However, when added in nanomolar concentrations, minocycline was able to improve the level of coupling for isolated mitochondria. The coupling improvement effect was observed in mitochondria containing VDAC but not in Δpor1 mitochondria (depleted of VDAC1, termed here VDAC) and in both types of mitoplasts. Thus, properly low concentrations of minocycline within the cell in the vicinity of VDAC-containing mitochondria enable the improvement of energy coupling of mitochondria that contributes to cytoprotective activity of minocycline.
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Silva A, Almeida B, Sampaio-Marques B, Reis M, Ohlmeier S, Rodrigues F, Vale AD, Ludovico P. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is a specific substrate of yeast metacaspase. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2011; 1813:2044-9. [DOI: 10.1016/j.bbamcr.2011.09.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 09/21/2011] [Accepted: 09/23/2011] [Indexed: 10/17/2022]
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Martinez-Moya P, Watt SA, Niehaus K, Alcaíno J, Baeza M, Cifuentes V. Proteomic analysis of the carotenogenic yeast Xanthophyllomyces dendrorhous. BMC Microbiol 2011; 11:131. [PMID: 21669001 PMCID: PMC3224108 DOI: 10.1186/1471-2180-11-131] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Accepted: 06/13/2011] [Indexed: 01/28/2023] Open
Abstract
Background The yeast Xanthophyllomyces dendrorhous is used for the microbiological production of the antioxidant carotenoid astaxanthin. In this study, we established an optimal protocol for protein extraction and performed the first proteomic analysis of the strain ATCC 24230. Protein profiles before and during the induction of carotenogenesis were determined by two-dimensional polyacrylamide gel electrophoresis and proteins were identified by mass spectrometry. Results Among the approximately 600 observed protein spots, 131 non-redundant proteins were identified. Proteomic analyses allowed us to identify 50 differentially expressed proteins that fall into several classes with distinct expression patterns. These analyses demonstrated that enzymes related to acetyl-CoA synthesis were more abundant prior to carotenogenesis. Later, redox- and stress-related proteins were up-regulated during the induction of carotenogenesis. For the carotenoid biosynthetic enzymes mevalonate kinase and phytoene/squalene synthase, we observed higher abundance during induction and/or accumulation of carotenoids. In addition, classical antioxidant enzymes, such as catalase, glutathione peroxidase and the cytosolic superoxide dismutases, were not identified. Conclusions Our results provide an overview of potentially important carotenogenesis-related proteins, among which are proteins involved in carbohydrate and lipid biosynthetic pathways as well as several redox- and stress-related proteins. In addition, these results might indicate that X. dendrorhous accumulates astaxanthin under aerobic conditions to scavenge the reactive oxygen species (ROS) generated during metabolism.
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Affiliation(s)
- Pilar Martinez-Moya
- Departamento de Ciencias Ecológicas, Centro de Biotecnologia, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
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Aerts AM, Bammens L, Govaert G, Carmona-Gutierrez D, Madeo F, Cammue BPA, Thevissen K. The Antifungal Plant Defensin HsAFP1 from Heuchera sanguinea Induces Apoptosis in Candida albicans. Front Microbiol 2011; 2:47. [PMID: 21993350 PMCID: PMC3128936 DOI: 10.3389/fmicb.2011.00047] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 03/02/2011] [Indexed: 12/31/2022] Open
Abstract
Plant defensins are active against plant and human pathogenic fungi (such as Candida albicans) and baker's yeast. However, they are non-toxic to human cells, providing a possible source for treatment of fungal infections. In this study, we characterized the mode of action of the antifungal plant defensin HsAFP1 from coral bells by screening the Saccharomyces cerevisiae deletion mutant library for mutants with altered HsAFP1 sensitivity and verified the obtained genetic data by biochemical assays in S. cerevisiae and C. albicans. We identified 84 genes, which when deleted conferred at least fourfold hypersensitivity or resistance to HsAFP1. A considerable part of these genes were found to be implicated in mitochondrial functionality. In line, sodium azide, which blocks the respiratory electron transport chain, antagonized HsAFP1 antifungal activity, suggesting that a functional respiratory chain is indispensable for HsAFP1 antifungal action. Since mitochondria are the main source of cellular reactive oxygen species (ROS), we investigated the ROS-inducing nature of HsAFP1. We showed that HsAFP1 treatment of C. albicans resulted in ROS accumulation. As ROS accumulation is one of the phenotypic markers of apoptosis in yeast, we could further demonstrate that HsAFP1 induced apoptosis in C. albicans. These data provide novel mechanistic insights in the mode of action of a plant defensin.
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Affiliation(s)
- An M Aerts
- Centre of Microbial and Plant Genetics, Katholieke Universiteit Leuven Heverlee, Belgium
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18
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Yıldırım V, Ozcan S, Becher D, Büttner K, Hecker M, Ozcengiz G. Characterization of proteome alterations in Phanerochaete chrysosporium in response to lead exposure. Proteome Sci 2011; 9:12. [PMID: 21388532 PMCID: PMC3063812 DOI: 10.1186/1477-5956-9-12] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Accepted: 03/09/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Total soluble proteome alterations of white rot fungus Phanerochaete chrysosporium in response to different doses (25, 50 and 100 μM) of Pb (II) were characterized by 2DE in combination with MALDI-TOF-MS. RESULTS Dose-dependent molecular response to Pb (II) involved a total of 14 up-regulated and 21 down-regulated proteins. The induction of an isoform of glyceraldehyde 3-phosphate dehydrogenase, alcohol dehydrogenase class V, mRNA splicing factor, ATP-dependent RNA helicase, thioredoxin reductase and actin required a Pb (II) dose of at least 50 μM. Analysis of the proteome dynamics of mid-exponential phase cells of P. chrysosporium subjected to 50 μM lead at exposure time intervals of 1, 2, 4 and 8 h, identified a total of 23 proteins in increased and 67 proteins in decreased amount. Overall, the newly induced/strongly up-regulated proteins involved in (i) amelioration of lipid peroxidation products, (ii) defense against oxidative damage and redox metabolism, (iii) transcription, recombination and DNA repair (iv) a yet unknown function represented by a putative protein. CONCLUSION The present study implicated the particular role of the elements of DNA repair, post-tanscriptional regulation and heterotrimeric G protein signaling in response to Pb (II) stress as shown for the first time for a basidiomycete.
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Affiliation(s)
- Volkan Yıldırım
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey.
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Liu J, Wisniewski M, Droby S, Tian S, Hershkovitz V, Tworkoski T. Effect of heat shock treatment on stress tolerance and biocontrol efficacy of Metschnikowia fructicola. FEMS Microbiol Ecol 2011; 76:145-55. [DOI: 10.1111/j.1574-6941.2010.01037.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Szopinska A, Morsomme P. Quantitative Proteomic Approaches and Their Application in the Study of Yeast Stress Responses. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2010; 14:639-49. [DOI: 10.1089/omi.2010.0045] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Aleksandra Szopinska
- Université catholique de Louvain, Institut des Sciences de la Vie, Croix du Sud Louvain-la-Neuve, Belgium
| | - Pierre Morsomme
- Université catholique de Louvain, Institut des Sciences de la Vie, Croix du Sud Louvain-la-Neuve, Belgium
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Xue HY, Niu DY, Gao GZ, Lin QY, Jin LJ, Xu YP. Aucubin modulates Bcl-2 family proteins expression and inhibits caspases cascade in H2O2-induced PC12 cells. Mol Biol Rep 2010; 38:3561-7. [DOI: 10.1007/s11033-010-0466-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2010] [Accepted: 11/09/2010] [Indexed: 11/24/2022]
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Abstract
Mitochondria contain two aqueous compartments: the matrix and the intermembrane space. Whereas many of the biologic functions of the matrix were well characterized in the past, it became clear very recently that the intermembrane space plays a pivotal role in the coordination of mitochondrial activities with other cellular processes. These activities include the exchange of proteins, lipids, or metal ions between the matrix and the cytosol, the regulated initiation of apoptotic cascades, signalling pathways that regulate respiration and metabolic functions, the prevention of reactive oxygen species produced by the respiratory chain, or the control of mitochondrial morphogenesis. We focus on the different biologic functions of the intermembrane space and discuss the relevance of this fascinating compartment for cellular physiology and human health.
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Pitarch A, Nombela C, Gil C. Prediction of the clinical outcome in invasive candidiasis patients based on molecular fingerprints of five anti-Candida antibodies in serum. Mol Cell Proteomics 2010; 10:M110.004010. [PMID: 20860995 DOI: 10.1074/mcp.m110.004010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Better prognostic predictors for invasive candidiasis (IC) are needed to tailor and individualize therapeutic decision-making and minimize its high morbidity and mortality. We investigated whether molecular profiling of IgG-antibody response to the whole soluble Candida proteome could reveal a prognostic signature that may serve to devise a clinical-outcome prediction model for IC and contribute to known IC prognostic factors. By serological proteome analysis and data-mining procedures, serum 31-IgG antibody-reactivity patterns were examined in 45 IC patients randomly split into training and test sets. Within the training cohort, unsupervised two-way hierarchical clustering and principal-component analyses segregated IC patients into two antibody-reactivity subgroups with distinct prognoses that were unbiased by traditional IC prognostic factors and other patients-related variables. Supervised discriminant analysis with leave-one-out cross-validation identified a five-IgG antibody-reactivity signature as the most simplified and accurate IC clinical-outcome predictor, from which an IC prognosis score (ICPS) was derived. Its robustness was confirmed in the test set. Multivariate logistic-regression and receiver-operating-characteristic curve analyses demonstrated that the ICPS was able to accurately discriminate IC patients at high risk for death from those at low risk and outperformed conventional IC prognostic factors. Further validation of the five-IgG antibody-reactivity signature on a multiplexed immunoassay supported the serological proteome analysis results. The five IgG antibodies incorporated in the ICPS made biologic sense and were associated either with good-prognosis and protective patterns (those to Met6p, Hsp90p, and Pgk1p, putative Candida virulence factors and antiapoptotic mediators) or with poor-prognosis and risk patterns (those to Ssb1p and Gap1p/Tdh3p, potential Candida proapoptotic mediators). We conclude that the ICPS, with additional refinement in future larger prospective cohorts, could be applicable to reliably predict patient clinical-outcome for individualized therapy of IC. Our data further provide insights into molecular mechanisms that may influence clinical outcome in IC and uncover potential targets for vaccine design and immunotherapy against IC.
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Affiliation(s)
- Aida Pitarch
- Department of Microbiology II, Faculty of Pharmacy, Complutense University of Madrid and Ramón y Cajal Institute of Health Research (IRYCIS), Madrid, Spain.
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Gałgańska H, Karachitos A, Baranek M, Budzińska M, Jordán J, Kmita H. Viability of Saccharomyces cerevisiae cells following exposure to H2O2 and protective effect of minocycline depend on the presence of VDAC. Eur J Pharmacol 2010; 643:42-7. [PMID: 20599912 DOI: 10.1016/j.ejphar.2010.06.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2010] [Accepted: 06/17/2010] [Indexed: 12/24/2022]
Abstract
Proteins involved in apoptosis are still a matter of debate. Therefore, we decided to check the effect of the presence of VDAC (voltage dependent anion selective channel) on viability of Saccharomyces cerevisiae cells following their exposure to H(2)O(2) that is known to induce apoptosis both in S. cerevisiae and in mammalian cells. Mitochondria of S. cerevisiae contain only one channel-forming VDAC isoform (VDAC1), which simplifies studies on the channel. Using S. cerevisiae mutant depleted of VDAC1 (termed here VDAC) and the isogenic wild type, we have shown that VDAC is important for protection of S. cerevisiae cells against H(2)O(2) treatment, particularly in exponential growth phase that is known to be more affected by H(2)O(2). The increased viability of H(2)O(2) pretreated exponentially growing cells containing VDAC was accompanied by clear changes of the cytosol redox state and was potentiated by minocycline, an antibiotic of the tetracycline family that displays cytoprotective potency. The protective effect of minocycline also coincided with distinct changes of cytosol redox state. Thus, we conclude that the ability to change the cytosol redox state following exposure to H(2)O(2) or/and minocycline appears to be an intrinsic feature of exponentially growing cells (young cells) containing VDAC. Moreover, the ability seems to be crucial for both cell viability and protective effect of minocycline.
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Affiliation(s)
- Hanna Gałgańska
- Laboratory of Bioenergetics, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
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25
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Guidi F, Francesca G, Magherini F, Francesca M, Gamberi T, Tania G, Borro M, Marina B, Simmaco M, Maurizio S, Modesti A, Alessandra M. Effect of different glucose concentrations on proteome of Saccharomyces cerevisiae. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1804:1516-25. [PMID: 20362699 DOI: 10.1016/j.bbapap.2010.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 03/16/2010] [Accepted: 03/18/2010] [Indexed: 10/19/2022]
Abstract
We performed a proteomic study to understand how Saccharomyces cerevisiae adapts its metabolism during the exponential growth on three different concentrations of glucose; this information will be necessary to understand yeast carbon metabolism in different environments. We induced a natural diauxic shift by growing yeast cells in glucose restriction thus having a fast and complete glucose exhaustion. We noticed differential expressions of groups of proteins. Cells in high glucose have a decreased growth rate during the initial phase of fermentation; in glucose restriction and in high glucose we found an over-expression of a protein (Peroxiredoxin) involved in protection against oxidative stress insult. The information obtained in our study validates the application of a proteomic approach for the identification of the molecular bases of environmental variations such as fermentation in high glucose and during a naturally induced diauxic shift.
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Affiliation(s)
- Francesca Guidi
- Dipartimento di Scienze Biochimiche, Università degli Studi di Firenze, Viale Morgagni, 50, 50134 Firenze, Italy
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27
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Magherini F, Pieri L, Guidi F, Giangrande C, Amoresano A, Bucciantini M, Stefani M, Modesti A. Proteomic analysis of cells exposed to prefibrillar aggregates of HypF-N. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1794:1243-50. [DOI: 10.1016/j.bbapap.2009.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 04/20/2009] [Accepted: 04/21/2009] [Indexed: 11/30/2022]
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28
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Gamberi T, Magherini F, Borro M, Gentile G, Cavalieri D, Marchi E, Modesti A. Novel insights into phenotype and mitochondrial proteome of yeast mutants lacking proteins Sco1p or Sco2p. Mitochondrion 2009; 9:103-14. [DOI: 10.1016/j.mito.2009.01.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 12/06/2008] [Accepted: 01/05/2009] [Indexed: 10/21/2022]
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29
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Mariani D, Mathias CJ, da Silva CG, Herdeiro RDS, Pereira R, Panek AD, Eleutherio ECA, Pereira MD. Involvement of glutathione transferases, Gtt1and Gtt2, with oxidative stress response generated by H2O2 during growth of Saccharomyces cerevisiae. Redox Rep 2009; 13:246-54. [PMID: 19017464 DOI: 10.1179/135100008x309028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Glutathione transferases are detoxifying enzymes responsible for eliminating toxic compounds generated under a variety of stress conditions. Saccharomyces cerevisiae control cells and glutathione transferase mutant strains (gtt1 and gtt2) were used to analyze tolerance, lipid and protein oxidation as oxidative stress markers during growth in the presence of H2O2. Glucose 6-phosphate dehydrogenase (G6PD) and glutathione reductase were assayed to monitor the capacity of cells to recycle glutathione. Although a reduction in growth was observed, deletion of GTT1 showed less inhibition by H2O2 than the control strain. Cells showed a significant reduction in cellular viability during the first hours of growth, the gtt1 mutant being hypersensitive even after 24 h of H2O2 exposure. As a consequence of oxidative stress caused by exposure to H2O2, an increase in lipid peroxidation was observed, mainly in the glutathione transferase mutant strains. While protein carbonylation increased by 17% and 23%, respectively, after 2 h in the presence of H2O2 in the control and gtt2 mutant, a 40% increase was observed in the gtt1 strain after 24-h exposure. The antioxidant G6PD and glutathione reductase activities were affected in the gtt1 mutant during H2O2 exposure, which could be critical for recycling glutathione. The same was observed for the gtt2 mutant after 2-h treatment, indicating that glutathione recycling might be associated with the detoxification process. Thus, glutathione transferases, Gtt1 and Gtt2, seem to be crucial in the response to H2O2 stress.
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Affiliation(s)
- Diana Mariani
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Braconi D, Bernardini G, Possenti S, Laschi M, Arena S, Scaloni A, Geminiani M, Sotgiu M, Santucci A. Proteomics and redox-proteomics of the effects of herbicides on a wild-type wine Saccharomyces cerevisiae strain. J Proteome Res 2009; 8:256-67. [PMID: 19032026 DOI: 10.1021/pr800372q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Several toxicological and environmental problems are associated with the extensive use of agricultural pesticides, such as herbicides. Nevertheless, little is known about the toxic effects of formulated herbicides, since many studies have been carried out using pure active molecules alone. In this work, we used as an eukaryotic model system an autochthonous wine yeast strain to investigate the effects of three commercial herbicides, currently used in the same geographical area from where this strain had been isolated. We carried out a comparative proteomic analysis to study the effects at the protein level of the herbicide-related stress, and found that the herbicides tested can alter the yeast proteome producing responses that share homologies with those observed treating yeast cells with the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) or with well-known oxidizing agents. We evaluated, through redox-proteomic techniques, protein carbonylation as a biomarker of oxidative stress. This analysis showed that herbicide-induced carbonylation is a dynamic phenomenon with degrees of selectivity.
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Affiliation(s)
- Daniela Braconi
- Dipartimento di Biologia Molecolare, Universita degli Studi di Siena, via Fiorentina 1, Siena, Italy
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Almeida B, Ohlmeier S, Almeida AJ, Madeo F, Leão C, Rodrigues F, Ludovico P. Yeast protein expression profile during acetic acid-induced apoptosis indicates causal involvement of the TOR pathway. Proteomics 2009; 9:720-32. [DOI: 10.1002/pmic.200700816] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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32
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Cheng JS, Qiao B, Yuan YJ. Comparative proteome analysis of robust Saccharomyces cerevisiae insights into industrial continuous and batch fermentation. Appl Microbiol Biotechnol 2008; 81:327-38. [DOI: 10.1007/s00253-008-1733-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Revised: 09/22/2008] [Accepted: 09/25/2008] [Indexed: 10/21/2022]
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Ikeda R, Sawamura K. Bacterial and H2O2 stress-induced apoptosis-like events in Cryptococcus neoformans. Res Microbiol 2008; 159:628-34. [DOI: 10.1016/j.resmic.2008.07.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2008] [Revised: 07/22/2008] [Accepted: 07/26/2008] [Indexed: 10/21/2022]
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Pereira C, Silva R, Saraiva L, Johansson B, Sousa M, Côrte-Real M. Mitochondria-dependent apoptosis in yeast. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:1286-302. [DOI: 10.1016/j.bbamcr.2008.03.010] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Revised: 03/05/2008] [Accepted: 03/13/2008] [Indexed: 12/18/2022]
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Friedl MA, Schmoll M, Kubicek CP, Druzhinina IS. Photostimulation of Hypocrea atroviridis growth occurs due to a cross-talk of carbon metabolism, blue light receptors and response to oxidative stress. MICROBIOLOGY-SGM 2008; 154:1229-1241. [PMID: 18375815 DOI: 10.1099/mic.0.2007/014175-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Light is a fundamental abiotic factor which stimulates growth and development of the majority of living organisms. In soil saprotrophic fungi, light is primarily known to influence morphogenesis, particularly sexual and asexual spore formation. Here we present a new function of light, the enhancement of mycelial growth. The photostimulated mycelial growth of the soil fungus Hypocrea atroviridis was detected on 17 (out of 95 tested carbon sources) carbohydrates and polyols, which are metabolically related to cellulose and hemicelluloses, and which are mainly available in the upper soil litter layer. This stimulation depends differently on the function of the two blue light receptor proteins BLR-1 and BLR-2, respectively, BLR-1 being responsible for carbon source selectivity and response to permanent light. Evocation of oxidative stress response in darkness imitates the photostimulation on nine of these carbon sources, and this effect was fully dependent on the function of BLR-1. We conclude that light in combination with the availability of litter-specific carbon sources serves as a signal for the fungus to be above ground, thereby stimulating fast growth in order to produce a maximum of propagules in the shortest time. We further deduce that this process involves oxidative stress response and the two blue light receptor proteins BLR-1 and BLR-2, the former playing the major role.
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Affiliation(s)
- Martina A Friedl
- Research Area of Gene Technology and Applied Biochemistry, Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9-1665, A-1060 Vienna, Austria
| | - Monika Schmoll
- Research Area of Gene Technology and Applied Biochemistry, Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9-1665, A-1060 Vienna, Austria
| | - Christian P Kubicek
- Research Area of Gene Technology and Applied Biochemistry, Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9-1665, A-1060 Vienna, Austria
| | - Irina S Druzhinina
- Research Area of Gene Technology and Applied Biochemistry, Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9-1665, A-1060 Vienna, Austria
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Ng CH, Tan SX, Perrone GG, Thorpe GW, Higgins VJ, Dawes IW. Adaptation to hydrogen peroxide in Saccharomyces cerevisiae: the role of NADPH-generating systems and the SKN7 transcription factor. Free Radic Biol Med 2008; 44:1131-45. [PMID: 18206664 DOI: 10.1016/j.freeradbiomed.2007.12.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2007] [Revised: 10/26/2007] [Accepted: 12/07/2007] [Indexed: 11/15/2022]
Abstract
A total of 286 H2O2-sensitive Saccharomyces cerevisiae deletion mutants were screened to identify genes involved in cellular adaptation to H2O2 stress. YAP1, SKN7, GAL11, RPE1, TKL1, IDP1, SLA1, and PET8 were important for adaptation to H2O2. The mutants were divisible into two groups based on their responses to a brief acute dose of H2O2 and to chronic exposure to H2O2. Transcription factors Yap1p, Skn7p, and Gal11p were important for both acute and chronic responses to H2O2. Yap1p and Skn7p were acting in concert for adaptation, which indicates that upregulation of antioxidant functions rather than generation of NADPH or glutathione is important for adaptation. Deletion of GPX3 and YBP1 involved in sensing H2O2 and activating Yap1p affected adaptation but to a lesser extent than YAP1 deletion. NADPH generation was also required for adaptation. RPE1, TKL1, or IDP1 deletants affected in NADPH production were chronically sensitive to H2O2 but resistant to an acute dose, and other mutants affected in NADPH generation tested were similarly affected in adaptation. These mutants overproduced reduced glutathione (GSH) but maintained normal cellular redox homeostasis. This overproduction of GSH was not regulated at transcription of the gene encoding gamma-glutamylcysteine synthetase.
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Affiliation(s)
- Chong-Han Ng
- Ramaciotti Centre for Gene Function Analysis, School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
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Current awareness on yeast. Yeast 2008. [DOI: 10.1002/yea.1455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Ralser M, Wamelink MM, Kowald A, Gerisch B, Heeren G, Struys EA, Klipp E, Jakobs C, Breitenbach M, Lehrach H, Krobitsch S. Dynamic rerouting of the carbohydrate flux is key to counteracting oxidative stress. J Biol 2007; 6:10. [PMID: 18154684 PMCID: PMC2373902 DOI: 10.1186/jbiol61] [Citation(s) in RCA: 410] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 08/07/2007] [Accepted: 10/12/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Eukaryotic cells have evolved various response mechanisms to counteract the deleterious consequences of oxidative stress. Among these processes, metabolic alterations seem to play an important role. RESULTS We recently discovered that yeast cells with reduced activity of the key glycolytic enzyme triosephosphate isomerase exhibit an increased resistance to the thiol-oxidizing reagent diamide. Here we show that this phenotype is conserved in Caenorhabditis elegans and that the underlying mechanism is based on a redirection of the metabolic flux from glycolysis to the pentose phosphate pathway, altering the redox equilibrium of the cytoplasmic NADP(H) pool. Remarkably, another key glycolytic enzyme, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), is known to be inactivated in response to various oxidant treatments, and we show that this provokes a similar redirection of the metabolic flux. CONCLUSION The naturally occurring inactivation of GAPDH functions as a metabolic switch for rerouting the carbohydrate flux to counteract oxidative stress. As a consequence, altering the homoeostasis of cytoplasmic metabolites is a fundamental mechanism for balancing the redox state of eukaryotic cells under stress conditions.
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Affiliation(s)
- Markus Ralser
- Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.
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Almeida B, Buttner S, Ohlmeier S, Silva A, Mesquita A, Sampaio-Marques B, Osório NS, Kollau A, Mayer B, Leão C, Laranjinha J, Rodrigues F, Madeo F, Ludovico P. NO-mediated apoptosis in yeast. J Cell Sci 2007; 120:3279-88. [PMID: 17726063 DOI: 10.1242/jcs.010926] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Nitric oxide (NO) is a small molecule with distinct roles in diverse physiological functions in biological systems, among them the control of the apoptotic signalling cascade. By combining proteomic, genetic and biochemical approaches we demonstrate that NO and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) are crucial mediators of yeast apoptosis. Using indirect methodologies and a NO-selective electrode, we present results showing that H2O2-induced apoptotic cells synthesize NO that is associated to a nitric oxide synthase (NOS)-like activity as demonstrated by the use of a classical NOS kit assay. Additionally, our results show that yeast GAPDH is a target of extensive proteolysis upon H2O2-induced apoptosis and undergoes S-nitrosation. Blockage of NO synthesis with Nomega-nitro-L-arginine methyl ester leads to a decrease of GAPDH S-nitrosation and of intracellular reactive oxygen species (ROS) accumulation, increasing survival. These results indicate that NO signalling and GAPDH S-nitrosation are linked with H2O2-induced apoptotic cell death. Evidence is presented showing that NO and GAPDH S-nitrosation also mediate cell death during chronological life span pointing to a physiological role of NO in yeast apoptosis.
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Affiliation(s)
- Bruno Almeida
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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