1
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Saha N, Acharjee S, Tomar RS. Cdc73 is a major regulator of apoptosis-inducing factor 1 expression in Saccharomyces cerevisiae via H3K36 methylation. FEBS Lett 2024; 598:658-669. [PMID: 38467538 DOI: 10.1002/1873-3468.14847] [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: 11/09/2023] [Revised: 01/18/2024] [Accepted: 02/09/2024] [Indexed: 03/13/2024]
Abstract
Apoptosis-inducing factor 1 (AIF1) overexpression is intimately linked to the sensitivity of yeast cells towards hydrogen peroxide or acetic acid. Therefore, studying the mechanism of AIF1 regulation in the cell would provide a significant understanding of the factors guiding yeast apoptosis. In this report, we show the time-dependent induction of AIF1 under hydrogen peroxide stress. Additionally, we find that AIF1 expression in response to hydrogen peroxide is mediated by two transcription factors, Yap5 (DNA binding) and Cdc73 (non-DNA binding). Furthermore, substituting the H3K36 residue with another amino acid significantly abrogates AIF1 expression. However, substituting the lysine (K) in H3K4 or H3K79 with alanine (A) does not affect AIF1 expression level under hydrogen peroxide stress. Altogether, reduced AIF1 expression in cdc73Δ is plausibly due to reduced H3K36me3 levels in the cells.
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Affiliation(s)
- Nitu Saha
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Santoshi Acharjee
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
| | - Raghuvir Singh Tomar
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, India
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2
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Burandt QC, Deising HB, von Tiedemann A. Further Limitations of Synthetic Fungicide Use and Expansion of Organic Agriculture in Europe Will Increase the Environmental and Health Risks of Chemical Crop Protection Caused by Copper-Containing Fungicides. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:19-30. [PMID: 37850744 DOI: 10.1002/etc.5766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/15/2023] [Accepted: 10/16/2023] [Indexed: 10/19/2023]
Abstract
Copper-containing fungicides have been used in agriculture since 1885. The divalent copper ion is a nonbiodegradable multisite inhibitor that has a strictly protective, nonsystemic effect on plants. Copper-containing plant protection products currently approved in Germany contain copper oxychloride, copper hydroxide, and tribasic copper sulfate. Copper is primarily used to control oomycete pathogens in grapevine, hop, potato, and fungal diseases in fruit production. In the environment, copper is highly persistent and toxic to nontarget organisms. The latter applies for terrestric and aquatic organisms such as earthworms, insects, birds, fish, Daphnia, and algae. Hence, copper fungicides are currently classified in the European Union as candidates for substitution. Pertinently, copper also exhibits significant mammalian toxicity (median lethal dose oral = 300-2500 mg/kg body wt in rats). To date, organic production still profoundly relies on the use of copper fungicides. Attempts to reduce doses of copper applications and the search for copper substitutes have not been successful. Copper compounds compared with modern synthetic fungicides with similar areas of use display significantly higher risks for honey bees (3- to 20-fold), beneficial insects (6- to 2000-fold), birds (2- to 13-fold), and mammals (up to 17-fold). These data contradict current views that crop protection in organic farming is associated with lower environmental or health risks. Further limitations in the range and use of modern single-site fungicides may force conventional production to fill the gaps with copper fungicides to counteract fungicide resistance. In contrast to the European Union Green Deal goals, the intended expansion of organic farming in Europe would further enhance the use of copper fungicides and hence increase the overall risks of chemical crop protection in Europe. Environ Toxicol Chem 2024;43:19-30. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Quentin C Burandt
- Department of Crop Sciences, Division of Plant Pathology and Plant Protection, Georg-August-University Göttingen, Göttingen, Germany
- Institute of Plant Breeding, Seed Science and Population Genetics, Division of Crop Biodiversity and Breeding Informatics, University of Hohenheim, Stuttgart, Germany
| | - Holger B Deising
- Institute of Agricultural and Nutritional Sciences, Division of Phytopathology and Crop Protection; Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Andreas von Tiedemann
- Department of Crop Sciences, Division of Plant Pathology and Plant Protection, Georg-August-University Göttingen, Göttingen, Germany
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3
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A GATA-type transcription factor SreA affects manganese susceptibility by regulating the expression of iron uptake-related genes. Fungal Genet Biol 2022; 163:103731. [PMID: 36087858 DOI: 10.1016/j.fgb.2022.103731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 01/06/2023]
Abstract
SreA has been identified as a GATA-type transcription factor that represses iron uptake to avoid iron excess during iron sufficiency. However, knowledge about whether SreA also affects the homeostasis of other divalent metal ions is limited. In this study, by screening Aspergillus fumigatus transcription factor deletion mutant libraries, we demonstrate that the sreA deletion mutant shows the greatest tolerance to MnCl2 among the tested divalent metal ions. Fe and Mn stimuli are able to enhance the expression of SreA with the different time-dependent manner, while the expression of SreA contributes to Mn2+ tolerance. Lack of SreA results in abnormally increased expression of a series of siderophore biosynthesis genes and iron transport-related genes, especially under MnCl2 treatment. Further mechanistic exploration indicated that lack of SreA exacerbates abnormal iron uptake, and iron excess inhibits cellular Mn content; thus, deletion of sreA results in Mn tolerance. Thus, findings in this study have demonstrated a new unexplored function for the transcription factor SreA in regulation of the Mn2+ tolerance.
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4
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Whale AJ, King M, Hull RM, Krueger F, Houseley J. Stimulation of adaptive gene amplification by origin firing under replication fork constraint. Nucleic Acids Res 2022; 50:915-936. [PMID: 35018465 PMCID: PMC8789084 DOI: 10.1093/nar/gkab1257] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 02/06/2023] Open
Abstract
Adaptive mutations can cause drug resistance in cancers and pathogens, and increase the tolerance of agricultural pests and diseases to chemical treatment. When and how adaptive mutations form is often hard to discern, but we have shown that adaptive copy number amplification of the copper resistance gene CUP1 occurs in response to environmental copper due to CUP1 transcriptional activation. Here we dissect the mechanism by which CUP1 transcription in budding yeast stimulates copy number variation (CNV). We show that transcriptionally stimulated CNV requires TREX-2 and Mediator, such that cells lacking TREX-2 or Mediator respond normally to copper but cannot acquire increased resistance. Mediator and TREX-2 can cause replication stress by tethering transcribed loci to nuclear pores, a process known as gene gating, and transcription at the CUP1 locus causes a TREX-2-dependent accumulation of replication forks indicative of replication fork stalling. TREX-2-dependent CUP1 gene amplification occurs by a Rad52 and Rad51-mediated homologous recombination mechanism that is enhanced by histone H3K56 acetylation and repressed by Pol32 and Pif1. CUP1 amplification is also critically dependent on late-firing replication origins present in the CUP1 repeats, and mutations that remove or inactivate these origins strongly suppress the acquisition of copper resistance. We propose that replicative stress imposed by nuclear pore association causes replication bubbles from these origins to collapse soon after activation, leaving a tract of H3K56-acetylated chromatin that promotes secondary recombination events during elongation after replication fork re-start events. The capacity for inefficient replication origins to promote copy number variation renders certain genomic regions more fragile than others, and therefore more likely to undergo adaptive evolution through de novo gene amplification.
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Affiliation(s)
- Alex J Whale
- Epigenetics Programme, Babraham Institute, Cambridge, UK
| | - Michelle King
- Epigenetics Programme, Babraham Institute, Cambridge, UK
| | - Ryan M Hull
- Epigenetics Programme, Babraham Institute, Cambridge, UK
| | - Felix Krueger
- Babraham Bioinformatics, Babraham Institute, Cambridge, UK
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5
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Extracellular pH and high concentration of potassium regulate the primary necrosis in the yeast Saccharomyces cerevisiae. Arch Microbiol 2021; 204:35. [DOI: 10.1007/s00203-021-02708-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/10/2021] [Accepted: 11/15/2021] [Indexed: 12/27/2022]
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6
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Singh S, Sahu RK, Sugathan A, Tomar RS. The H2A N-terminal tail is required to alleviate copper-induced stress in Saccharomyces cerevisiae. FEMS Yeast Res 2021; 21:6459723. [PMID: 34894216 DOI: 10.1093/femsyr/foab061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 12/09/2021] [Indexed: 11/13/2022] Open
Abstract
Histone tail residues drive many biological processes by regulating genome-wide transcription. Functions of histone H3 and H4 tail residues in stress-responsive gene transcriptional programs have been extensively studied. The H2A tail residues have been shown to regulate DNA damage repair and oxidative stress response, but the involvement of N-terminal tail of H2A (H2ANtT) in proteostasis regulation is unknown. The unfolded protein response pathway (UPR) is an essential mechanism adopted by cells to prevent protein toxicity in response to ER stress. The disturbance in ER can occur by various factors such as heat stress, redox imbalance, exposure to xenobiotics and metals. Copper is utilized as a cofactor by cellular enzymes, but excessive copper affects ER homeostasis. We found that cells lacking 1-20 residues of H2ANtT are intolerant to copper stress, owing to the accumulation of misfolded proteins in the mutant cells. H2A 1-20 truncation also reduces the physiological UPR, and copper exposure further aggravates this effect. Furthermore, the expression of a spliced version of HAC1 mRNA in H2A∆(1-20) cells, encoding the downstream transcription factor of UPR signalling, rescues their growth under copper stress. Altogether these results provide evidence that H2ANtT reduces copper-induced ER stress by regulating UPR signalling.
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Affiliation(s)
- Sakshi Singh
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Rd, Bhauri, Madhya Pradesh 462066, India
| | - Rakesh Kumar Sahu
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Rd, Bhauri, Madhya Pradesh 462066, India
| | - Anaswara Sugathan
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Rd, Bhauri, Madhya Pradesh 462066, India
| | - Raghuvir Singh Tomar
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Rd, Bhauri, Madhya Pradesh 462066, India
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7
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Grosfeld EV, Bidiuk VA, Mitkevich OV, Ghazy ESMO, Kushnirov VV, Alexandrov AI. A Systematic Survey of Characteristic Features of Yeast Cell Death Triggered by External Factors. J Fungi (Basel) 2021; 7:886. [PMID: 34829175 PMCID: PMC8626022 DOI: 10.3390/jof7110886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/15/2021] [Accepted: 10/17/2021] [Indexed: 12/20/2022] Open
Abstract
Cell death in response to distinct stimuli can manifest different morphological traits. It also depends on various cell death signaling pathways, extensively characterized in higher eukaryotes but less so in microorganisms. The study of cell death in yeast, and specifically Saccharomyces cerevisiae, can potentially be productive for understanding cell death, since numerous killing stimuli have been characterized for this organism. Here, we systematized the literature on external treatments that kill yeast, and which contains at least minimal data on cell death mechanisms. Data from 707 papers from the 7000 obtained using keyword searches were used to create a reference table for filtering types of cell death according to commonly assayed parameters. This table provides a resource for orientation within the literature; however, it also highlights that the common view of similarity between non-necrotic death in yeast and apoptosis in mammals has not provided sufficient progress to create a clear classification of cell death types. Differences in experimental setups also prevent direct comparison between different stimuli. Thus, side-by-side comparisons of various cell death-inducing stimuli under comparable conditions using existing and novel markers that can differentiate between types of cell death seem like a promising direction for future studies.
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Affiliation(s)
- Erika V. Grosfeld
- Moscow Institute of Physics and Technology, 9 Institutskiy per, Dolgoprudny, 141700 Moscow, Russia;
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
| | - Victoria A. Bidiuk
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
| | - Olga V. Mitkevich
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
| | - Eslam S. M. O. Ghazy
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
- Institute of Biochemical Technology and Nanotechnology, Peoples’ Friendship University of Russia (RUDN), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- Department of Microbiology, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Vitaliy V. Kushnirov
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
| | - Alexander I. Alexandrov
- Federal Research Center of Biotechnology of the RAS, Bach Institute of Biochemistry, 119071 Moscow, Russia; (V.A.B.); (O.V.M.); (E.S.M.O.G.); (V.V.K.)
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8
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Robinson JR, Isikhuemhen OS, Anike FN. Fungal-Metal Interactions: A Review of Toxicity and Homeostasis. J Fungi (Basel) 2021; 7:225. [PMID: 33803838 PMCID: PMC8003315 DOI: 10.3390/jof7030225] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/18/2022] Open
Abstract
Metal nanoparticles used as antifungals have increased the occurrence of fungal-metal interactions. However, there is a lack of knowledge about how these interactions cause genomic and physiological changes, which can produce fungal superbugs. Despite interest in these interactions, there is limited understanding of resistance mechanisms in most fungi studied until now. We highlight the current knowledge of fungal homeostasis of zinc, copper, iron, manganese, and silver to comprehensively examine associated mechanisms of resistance. Such mechanisms have been widely studied in Saccharomyces cerevisiae, but limited reports exist in filamentous fungi, though they are frequently the subject of nanoparticle biosynthesis and targets of antifungal metals. In most cases, microarray analyses uncovered resistance mechanisms as a response to metal exposure. In yeast, metal resistance is mainly due to the down-regulation of metal ion importers, utilization of metallothionein and metallothionein-like structures, and ion sequestration to the vacuole. In contrast, metal resistance in filamentous fungi heavily relies upon cellular ion export. However, there are instances of resistance that utilized vacuole sequestration, ion metallothionein, and chelator binding, deleting a metal ion importer, and ion storage in hyphal cell walls. In general, resistance to zinc, copper, iron, and manganese is extensively reported in yeast and partially known in filamentous fungi; and silver resistance lacks comprehensive understanding in both.
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Affiliation(s)
| | - Omoanghe S. Isikhuemhen
- Department of Natural Resources and Environmental Design, North Carolina Agricultural and Technical State University, 1601 East Market Street, Greensboro, NC 27411, USA; (J.R.R.); (F.N.A.)
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9
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Manganese homeostasis at the host-pathogen interface and in the host immune system. Semin Cell Dev Biol 2021; 115:45-53. [PMID: 33419608 DOI: 10.1016/j.semcdb.2020.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023]
Abstract
Manganese serves as an indispensable catalytic center and the structural core of various enzymes that participate in a plethora of biological processes, including oxidative phosphorylation, glycosylation, and signal transduction. In pathogenic microorganisms, manganese is required for survival by maintaining basic biochemical activity and virulence; in contrast, the host utilizes a process known as nutritional immunity to sequester manganese from invading pathogens. Recent epidemiological and animal studies have shown that manganese increases the immune response in a wide range of vertebrates, including humans, rodents, birds, and fish. On the other hand, excess manganese can cause neurotoxicity and other detrimental effects. Here, we review recent data illustrating the essential role of manganese homeostasis at the host-pathogen interface and in the host immune system. We also discuss the accumulating body of evidence that manganese modulates various signaling pathways in immune processes. Finally, we discuss the key molecular players involved in manganese's immune regulatory function, as well as the clinical implications with respect to cancer immunotherapy.
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10
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Single‐Cell Nanoencapsulation of
Saccharomyces cerevisiae
by Cytocompatible Layer‐by‐Layer Assembly of Eggshell Membrane Hydrolysate and Tannic Acid. ADVANCED NANOBIOMED RESEARCH 2020. [DOI: 10.1002/anbr.202000037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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11
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Muehler D, Rupp CM, Keceli S, Brochhausen C, Siegmund H, Maisch T, Hiller KA, Buchalla W, Cieplik F. Insights Into Mechanisms of Antimicrobial Photodynamic Action Toward Biofilms Using Phenalen-1-One Derivatives as Photosensitizers. Front Microbiol 2020; 11:589364. [PMID: 33193252 PMCID: PMC7662152 DOI: 10.3389/fmicb.2020.589364] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/28/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction In view of increasing resistance against antibiotics and antiseptics, antimicrobial photodynamic therapy (aPDT) may be a promising approach for use in dentistry. The aim of this study was to investigate the mechanism of action of aPDT with the phenalene-1-one derivatives SAPYR and SA-PN-05 as photosensitizers by evaluating bacterial ability to replicate, membrane integrity, metabolic activity, and formation of reactive oxygen species (ROS) in biofilms of Actinomyces naeslundii, Streptococcus mutans, and Escherichia coli. Materials and Methods Single-species biofilms (A. naeslundii, S. mutans, and E. coli) were cultured under aerobic conditions for 48 h followed by treatment with the photosensitizers SAPYR and SA-PN-05 at various concentrations (0, 50, 100, 500 μM) and different incubation periods of 5, 10, 20, and 30 min and subsequent irradiation for 10 min (Waldmann PIB 3000; λem = 360–600 nm; 50 mW/cm2; 30 J/cm2). Control samples were treated with dH2O and kept in dark for the same periods. Bacterial ability to replicate was evaluated by colony forming unit (CFU) assay. The cytoplasmic membrane integrity was investigated by flow cytometry using SYBR Green and propidium iodide and visualized by scanning and transmission electron microscopy. For SAPYR, metabolic activity and formation of intracellular ROS after irradiation were evaluated via luminescence and fluorometric assays, respectively. Results SAPYR showed antimicrobial effects (>3 log10 CFU reduction) on S. mutans after 5 min and on A. naeslundii after 20 min incubation and light activation. For E. coli, CFU reduction was >2 log10 after 30 min of incubation. SA-PN-05 showed an antimicrobial effect after 5 min for all bacteria. Membrane damage upon aPDT with SAPYR was observed for E. coli, but not for S. mutans and A. naeslundii. Following treatment with SA-PN-05, irradiated samples and dark controls of all three species showed loss of membrane integrity. Luminescence and fluorometric assays showed a reduction in metabolic activity and an increase in formation of intracellular ROS in all three species upon aPDT treatment with SAPYR. Conclusion The observed loss in ability to replicate upon aPDT with SAPYR in single-species biofilms may be due to an increase in formation of intracellular ROS upon photodynamic treatment.
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Affiliation(s)
- Denise Muehler
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - Christina M Rupp
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - Sercan Keceli
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | | | - Heiko Siegmund
- Institute of Pathology, University Hospital Regensburg, Regensburg, Germany
| | - Tim Maisch
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - Karl-Anton Hiller
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
| | - Fabian Cieplik
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, Regensburg, Germany
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12
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Toth A, Aufschnaiter A, Fedotovskaya O, Dawitz H, Ädelroth P, Büttner S, Ott M. Membrane-tethering of cytochrome c accelerates regulated cell death in yeast. Cell Death Dis 2020; 11:722. [PMID: 32892209 PMCID: PMC7474732 DOI: 10.1038/s41419-020-02920-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 12/18/2022]
Abstract
Intrinsic apoptosis as a modality of regulated cell death is intimately linked to permeabilization of the outer mitochondrial membrane and subsequent release of the protein cytochrome c into the cytosol, where it can participate in caspase activation via apoptosome formation. Interestingly, cytochrome c release is an ancient feature of regulated cell death even in unicellular eukaryotes that do not contain an apoptosome. Therefore, it was speculated that cytochrome c release might have an additional, more fundamental role for cell death signalling, because its absence from mitochondria disrupts oxidative phosphorylation. Here, we permanently anchored cytochrome c with a transmembrane segment to the inner mitochondrial membrane of the yeast Saccharomyces cerevisiae, thereby inhibiting its release from mitochondria during regulated cell death. This cytochrome c retains respiratory growth and correct assembly of mitochondrial respiratory chain supercomplexes. However, membrane anchoring leads to a sensitisation to acetic acid-induced cell death and increased oxidative stress, a compensatory elevation of cellular oxygen-consumption in aged cells and a decreased chronological lifespan. We therefore conclude that loss of cytochrome c from mitochondria during regulated cell death and the subsequent disruption of oxidative phosphorylation is not required for efficient execution of cell death in yeast, and that mobility of cytochrome c within the mitochondrial intermembrane space confers a fitness advantage that overcomes a potential role in regulated cell death signalling in the absence of an apoptosome.
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Affiliation(s)
- Alexandra Toth
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden
| | - Andreas Aufschnaiter
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden
- Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50, 8010, Graz, Austria
| | - Olga Fedotovskaya
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden
| | - Hannah Dawitz
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden
| | - Pia Ädelroth
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden
| | - Sabrina Büttner
- Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50, 8010, Graz, Austria.
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Svante Arrheniusväg 20C, 106 91, Stockholm, Sweden.
| | - Martin Ott
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Svante Arrheniusväg 16, 106 91, Stockholm, Sweden.
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13
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Fagbohun OF, Babalola OO, Agboola FK, Joseph JS, Malindisa S, Msagati TAM. Evaluation of Phytochemicals, Antioxidants, Trace Elements in Kigelia africana Fruit Extracts and Chemical Profiling Analysis Using UHPLC-qTOF-MS 2 Spectrometry. Biol Trace Elem Res 2020; 195:679-695. [PMID: 31432445 DOI: 10.1007/s12011-019-01869-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 08/15/2019] [Indexed: 12/17/2022]
Abstract
The study aimed at evaluating the phytochemical composition, antioxidant potentials and the levels of trace elements in the fruit extract of Kigelia africana obtained by different extraction solvents in order to ascertain its numerous pharmacological activities and identify the different chemical compounds responsible for these activities. The crude extract in ethanol and four other solvent fractions (hexane, ethylacetate, butanol and aqueous) were obtained for phytochemical screening. Antioxidant potentials of K. africana fruit were investigated spectrophotometrically using hydroxyl ion scavenging (OH-) activity, metal ion chelating activity, anti-lipid peroxidation activity as well as total antioxidant capacity assays. Trace element (Mn, Zn, Cd, Ni, Cu, Pb, Cr, Co and Fe) levels were measured using a plasma-emission spectrometer that has an auto sampler AS 93-plus and coupled with Nebulizer CETAC U-6000AT+ after microwave acid digestion of the fruit extracts. Chemical identification was performed using ultra-high-pressure liquid chromatography-quadrupole time-of-flight tandem mass spectrometry (UHPLC-qTOF-MS2). Kigelia africana fruit extracts obtained showed a variety of bioactive phytochemical compounds including phenolic acids, flavonoids, saponins, tannins and glycosides. The total antioxidant capacity activities of the aqueous, butanol, ethanol, hexane and ethylacetate extracts are 15.04, 52.11, 44.95, 79.27 and 175.20 mg AAE/g. Metal ion chelating activity showed significant correlation with lipid peroxidation inhibition activity at p ≤ 0.01 and with OH- scavenging activity at p ≤ 0.05. PCA analysis revealed that all the extract/fractions have higher total antioxidant activities compared to aqueous extract with hexane extract exhibiting the highest radical scavenging potential. HCA showed similarities with three well-defined clusters and PLS regression was used to predict total antioxidant activity. High sensitivity by low values of limits of detection and quantification was observed ranging from 0.021 to 0.085 mg/ml and 0.063 to 0.258 mg/ml for Zn and Fe respectively. Ethylacetate extract had high concentration of Fe (0.5656 mg/kg). For the standardization of the K. africana fruit extract, 244 chemical compounds were identified by measuring m/z values with threshold override of 100,000 and analysing mass spectrometer fragmentation behaviour while 16 of these were confirmed. Kigelia africana fruit extract is a good source of antioxidant and possess maximum accepted concentration of trace elements according to European legislation (1881/2006/EC). The metabolites identified exhibited numerous pharmacological activities. The method and results suggest the applicability for commercial use of this K. africana fruit in the treatment of oxidative-related diseases. Graphical abstract The phytochemical, antioxidant and trace element composition of crude ethanol extract, hexane, butanol, aqueous and ethylacetate extracts of Kigelia africana fruit were determined. The fruit extracts were found to possess good antioxidant activity, maximum acceptable amount of essential trace elements as well as the presence of bioactive phytochemicals. K. africana fruit would be an ideal candidate in improving human health and thus the management of oxidative-related diseases such as diabetes, by involving in the antioxidant defense system against free radical generation.
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Affiliation(s)
- Oladapo F Fagbohun
- Department of Biomedical Engineering, First Technical University, Ibadan, Oyo, Nigeria.
| | - Olusegun O Babalola
- Department of Biochemistry, Obafemi Awolowo University (OAU), Ile-Ife, Osun, Nigeria
| | - Femi K Agboola
- Department of Biochemistry, Obafemi Awolowo University (OAU), Ile-Ife, Osun, Nigeria
| | - Jitcy S Joseph
- Department of Life and Consumer Sciences, University of South Africa (UNISA), Florida Park, Johannesburg, South Africa
- Department of Toxicology and Biochemistry, The National Institute of Occupational Health, Johannesburg, South Africa
| | - Sibusiso Malindisa
- Department of Life and Consumer Sciences, University of South Africa (UNISA), Florida Park, Johannesburg, South Africa
| | - Titus A M Msagati
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa (UNISA), Florida Park, Johannesburg, South Africa
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14
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Winans MJ, Gallagher JEG. Metallomic and lipidomic analysis of S. cerevisiae response to cellulosic copper nanoparticles uncovers drivers of toxicity. Metallomics 2020; 12:799-812. [PMID: 32239052 DOI: 10.1039/d0mt00018c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nanotechnology is a promising new technology, of which antimicrobial metal nanocomposites are predicted to become valuable in medical and food packaging applications. Copper is a redox-active antimicrobial metal that can become increasingly toxic depending on the target biomolecule's donor atom selectivity and the chemical species of copper present. Mass is the traditional measurement of the intrinsic elemental chemistry, but this practice fails to reflect the morphology and surface area reactivity of nanotechnology. The carboxymethyl cellulose copper nanoparticles (CMC-Cu) investigated in this study have unique and undefined toxicity to Saccharomyces cerevisiae that is different from CuSO4. Cellular surface damage was found in scanning electron micrographs upon CMC-Cu exposure. Further investigation into the lipids revealed altered phosphatidylcholine and phosphatidylethanolamine membrane composition, as well as depleted triacylglycerols, suggesting an impact on the Kennedy lipid pathway. High levels of reactive oxygen species were measured which likely played a role in the lipid peroxidation detected with CMC-Cu treatment. Metal homeostasis was affected by CMC-Cu treatment. The copper sensitive yeast strain, YJM789, significantly decreased cellular zinc concentrations while the copper concentrations increased, suggesting a possible ionic mimicry relationship. In contrast to other compounds that generate ROS, no evidence of genotoxicity was found. As commonplace objects become more integrated with nanotechnology, humanity must look forward past traditional measurements of toxicity.
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Affiliation(s)
- Matthew J Winans
- West Virginia University - Biology Department, 53 Campus Drive LSB 3140, Morgantown, WV 26506, USA.
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15
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Correcting an instance of synthetic lethality with a pro-survival sequence. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118734. [PMID: 32389645 DOI: 10.1016/j.bbamcr.2020.118734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 04/11/2020] [Accepted: 05/02/2020] [Indexed: 11/21/2022]
Abstract
A human cDNA encoding the LIM domain containing 194 amino acid cysteine and glycine rich protein 3 (CSRP3) was identified as a BAX suppressor in yeast and a pro-survival sequence that abrogated copper mediated regulated cell death (RCD). Yeast lacks a CSRP3 orthologue but it has four LIM sequences, namely RGA1, RGA2, LRG1 and PXL1. These are known regulators of stress responses yet their roles in RCD remain unknown. Given that LIMs interact with other LIMs, we ruled out the possibility that overexpressed yeast LIMs alone could prevent RCD and that CSRP3 functions by acting as a dominant regulator of yeast LIMs. Of interest was the discovery that even though yeast cells lacking the LIM encoding PXL1 had no overt growth defect, it was nevertheless supersensitive to the effects of sublethal levels of copper. Heterologous expression of human CSPR3 as well as the pro-survival 14-3-3 sequence corrected this copper supersensitivity. These results show that the pxl1∆-copper synthetic lethality is likely due to the induction of RCD. This differs from the prevailing model in which synthetic lethality occurs because of specific defects generated by the combined loss of two overlapping but non-essential functions.
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16
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Pupo A, Ayers MC, Sherman ZN, Vance RJ, Cumming JR, Gallagher JEG. MCHM Acts as a Hydrotrope, Altering the Balance of Metals in Yeast. Biol Trace Elem Res 2020; 195:260-271. [PMID: 31392542 PMCID: PMC7150659 DOI: 10.1007/s12011-019-01850-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/24/2019] [Indexed: 11/25/2022]
Abstract
While drugs and other industrial chemicals are routinely studied to assess risks, many widely used chemicals have not been thoroughly evaluated. One such chemical, 4-methylcyclohexane methanol (MCHM), is an industrial coal-cleaning chemical that contaminated the drinking water supply in Charleston, WV, USA in 2014. While a wide range of ailments was reported following the spill, little is known about the molecular effects of MCHM exposure. We used the yeast model to explore the impacts of MCHM on cellular function. Exposure to MCHM dramatically altered the yeast transcriptome and the balance of metals in yeast. Underlying genetic variation in the response to MCHM, transcriptomics and, mutant analysis uncovered the role of the metal transporters, Arn2 and Yke4, to MCHM response. Expression of Arn2, which is involved in iron uptake, was lower in MCHM-tolerant yeast and loss of Arn2 further increased MCHM tolerance. Genetic variation within Yke4, an ER zinc transporter, also mediated response to MCHM, and loss of Yke4 decreased MCHM tolerance. The addition of zinc to MCHM-sensitive yeast rescued growth inhibition. In vitro assays demonstrated that MCHM acted as a hydrotrope and prevented protein interactions, while zinc induced the aggregation of proteins. We hypothesized that MCHM altered the structures of extracellular domains of proteins, and the addition of zinc stabilized the structure to maintain metal homeostasis in yeast exposed to MCHM.
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Affiliation(s)
- Amaury Pupo
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA
| | - Michael C Ayers
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA
| | - Zachary N Sherman
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA
| | - Rachel J Vance
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA
| | - Jonathan R Cumming
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA
| | - Jennifer E G Gallagher
- Department of Biology, West Virginia University, 53 Campus Drive, Life Sciences Building Rm 5105, Morgantown, WV, 26506, USA.
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17
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Khan N, Chen X, Geiger JD. Role of Divalent Cations in HIV-1 Replication and Pathogenicity. Viruses 2020; 12:E471. [PMID: 32326317 PMCID: PMC7232465 DOI: 10.3390/v12040471] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/09/2020] [Accepted: 04/18/2020] [Indexed: 12/22/2022] Open
Abstract
Divalent cations are essential for life and are fundamentally important coordinators of cellular metabolism, cell growth, host-pathogen interactions, and cell death. Specifically, for human immunodeficiency virus type-1 (HIV-1), divalent cations are required for interactions between viral and host factors that govern HIV-1 replication and pathogenicity. Homeostatic regulation of divalent cations' levels and actions appear to change as HIV-1 infection progresses and as changes occur between HIV-1 and the host. In people living with HIV-1, dietary supplementation with divalent cations may increase HIV-1 replication, whereas cation chelation may suppress HIV-1 replication and decrease disease progression. Here, we review literature on the roles of zinc (Zn2+), iron (Fe2+), manganese (Mn2+), magnesium (Mg2+), selenium (Se2+), and copper (Cu2+) in HIV-1 replication and pathogenicity, as well as evidence that divalent cation levels and actions may be targeted therapeutically in people living with HIV-1.
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Affiliation(s)
| | | | - Jonathan D. Geiger
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, ND 58203, USA; (N.K.); (X.C.)
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18
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Liu X, Liu H, Wu W, Zhang X, Gu T, Zhu M, Tan W. Oxidative Stress Induced by Metal Ions in Bioleaching of LiCoO 2 by an Acidophilic Microbial Consortium. Front Microbiol 2020; 10:3058. [PMID: 32010108 PMCID: PMC6974807 DOI: 10.3389/fmicb.2019.03058] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/18/2019] [Indexed: 12/13/2022] Open
Abstract
An acidophilic microbial consortium (AMC) was used to investigate the fundamental mechanism behind the adverse effects of pulp density increase in the bioleaching of waste lithium ion batteries (WLIBs). Results showed that there existed the effect of metal-ion stress on the bio-oxidative activity of AMC. The Li+ and Co2+ accumulated in the leachate were the direct cause for the decrease in lithium and cobalt recovery yields under a high pulp density. In a simulated bioleaching system with 4.0% (w ⋅v-1) LiCoO2, the intracellular reactive oxygen species (ROS) content in AMC increased from 0.82 to 6.02 within 24 h, which was almost three times higher than that of the control (2.04). After the supplementation of 0.30 g⋅L-1 of exogenous glutathione (GSH), the bacterial intracellular ROS content decreased by 40% within 24 h and the activities of intracellular ROS scavenging enzymes, including glutathione peroxidase (GSH-Px) and catalase (CAT), were 1.4- and 2.0-folds higher in comparison with the control within 24 h. In the biofilms formed on pyrite in the bioleaching of WLIBs, it was found that metal-ion stress had a great influence on the 3-D structure and the amount of biomass of the biofilms. After the exogenous addition of GSH, the structure and the amount of biomass of the biofilms were restored to some extent. Eventually, through ROS regulation by the exogenous addition of GSH, very high metal recovery yields of 98.1% Li and 96.3% Co were obtained at 5.0% pulp density.
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Affiliation(s)
- Xiaocui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Hao Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Weijin Wu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Xu Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Tingyue Gu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, United States
| | - Minglong Zhu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Wensong Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
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19
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iTRAQ-based proteomic analyses of the plant-pathogenic bacterium Acidovorax citrulli during entrance into and resuscitation from the viable but nonculturable state. J Proteomics 2020; 211:103547. [DOI: 10.1016/j.jprot.2019.103547] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 09/28/2019] [Accepted: 10/07/2019] [Indexed: 12/26/2022]
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20
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Valiakhmetov AY, Kuchin AV, Suzina NE, Zvonarev AN, Shepelyakovskaya AO. Glucose causes primary necrosis in exponentially grown yeast Saccharomyces cerevisiae. FEMS Yeast Res 2019; 19:5347945. [PMID: 30785621 DOI: 10.1093/femsyr/foz019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 02/19/2019] [Indexed: 02/07/2023] Open
Abstract
In this paper, we present data on sugar-induced cell death (SICD) in the yeast Saccharomyces cerevisiae in the exponential phase of growth. We suggest that the nature of SICD in exponentially grown yeast is primary necrosis, in contrast to cells in the stationary growth phase, which exhibit apoptotic SICD. The following findings confirm this conclusion: (i) the process rate; (ii) the impairments of plasma membrane integrity; (iii) the drastic morphological changes in the intracellular content; (iv) the absence of chromatin condensation; (v) the absence of externalization of phosphotidylserine (PS) on the outer leaflet of plasma membrane and (vi) the insensitivity of the SICD process to cycloheximide (CHX). Research shows that SICD occurs in a subpopulation of cells in the S-phase.
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Affiliation(s)
- A Ya Valiakhmetov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, FRC PCBR RAS.,Moscow Region State University
| | - A V Kuchin
- Institute of Cell Biophysics, FRC PCBR RAS
| | - N E Suzina
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, FRC PCBR RAS
| | - A N Zvonarev
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, FRC PCBR RAS
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21
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Zhu J, Wu F, Yue S, Chen C, Song S, Wang H, Zhao M. Functions of reactive oxygen species in apoptosis and ganoderic acid biosynthesis in Ganoderma lucidum. FEMS Microbiol Lett 2019; 366:5714084. [PMID: 31967638 DOI: 10.1093/femsle/fnaa015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 01/21/2020] [Indexed: 12/26/2022] Open
Abstract
Ganoderma lucidum is a medicinal fungus that is widely used in traditional medicine. Fungal PacC is recognized as an important transcription factor that functions during adaptation to environmental pH, fungal development and secondary metabolism. Previous studies have revealed that GlPacC plays important roles in mycelial growth, fruiting body development and ganoderic acid (GA) biosynthesis. In this study, using a terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling (TUNEL) assay, we found that the apoptosis level was increased when PacC was silenced. The transcript and activity levels of caspase-like proteins were significantly increased in the PacC-silenced (PacCi) strains compared with the control strains. Silencing PacC also resulted in an increased reactive oxygen species (ROS) levels (∼2-fold) and decreased activity levels of enzymes involved in the antioxidant system. Further, we found that the intracellular ROS levels contributed to apoptosis and GA biosynthesis. Adding N-acetyl-cysteine and vitamin C decreased intracellular ROS and resulted in the inhibition of apoptosis in the PacCi strains. Additionally, the GA biosynthesis was different between the control strains and the PacCi strains after intracellular ROS was eliminated. Taken together, the findings showed that silencing PacC can result in an intracellular ROS burst, which increases cell apoptosis and GA biosynthesis levels. Our study provides novel insight into the functions of PacC in filamentous fungi.
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Affiliation(s)
- Jing Zhu
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Fengli Wu
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Sining Yue
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Chen Chen
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Shuqi Song
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Hui Wang
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
| | - Mingwen Zhao
- Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture; Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, P.R. China
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22
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Porras-Agüera JA, Moreno-García J, Mauricio JC, Moreno J, García-Martínez T. First Proteomic Approach to Identify Cell Death Biomarkers in Wine Yeasts during Sparkling Wine Production. Microorganisms 2019; 7:microorganisms7110542. [PMID: 31717411 PMCID: PMC6920952 DOI: 10.3390/microorganisms7110542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/22/2019] [Accepted: 11/07/2019] [Indexed: 12/22/2022] Open
Abstract
Apoptosis and later autolysis are biological processes which take place in Saccharomyces cerevisiae during industrial fermentation processes, which involve costly and time-consuming aging periods. Therefore, the identification of potential cell death biomarkers can contribute to the creation of a long-term strategy in order to improve and accelerate the winemaking process. Here, we performed a proteomic analysis based on the detection of possible apoptosis and autolysis protein biomarkers in two industrial yeast strains commonly used in post-fermentative processes (sparkling wine secondary fermentation and biological aging) under typical sparkling wine elaboration conditions. Pressure had a negatively effect on viability for flor yeast, whereas the sparkling wine strain seems to be more adapted to these conditions. Flor yeast strain experienced an increase in content of apoptosis-related proteins, glucanases and vacuolar proteases at the first month of aging. Significant correlations between viability and apoptosis proteins were established in both yeast strains. Multivariate analysis based on the proteome of each process allowed to distinguish among samples and strains. The proteomic profile obtained in this study could provide useful information on the selection of wine strains and yeast behavior during sparkling wine elaboration. Additionally, the use of flor yeasts for sparkling wine improvement and elaboration is proposed.
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Affiliation(s)
- Juan Antonio Porras-Agüera
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba, 14014 Cordoba, Spain; (J.A.P.-A.); (J.M.-G.); (T.G.-M.)
| | - Jaime Moreno-García
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba, 14014 Cordoba, Spain; (J.A.P.-A.); (J.M.-G.); (T.G.-M.)
| | - Juan Carlos Mauricio
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba, 14014 Cordoba, Spain; (J.A.P.-A.); (J.M.-G.); (T.G.-M.)
- Correspondence: ; Tel.: +34-957-218640; Fax: +34-957-218650
| | - Juan Moreno
- Department of Agricultural Chemistry, Agrifood Campus of International Excellence ceiA3, University of Cordoba, 14014 Cordoba, Spain;
| | - Teresa García-Martínez
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, University of Cordoba, 14014 Cordoba, Spain; (J.A.P.-A.); (J.M.-G.); (T.G.-M.)
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23
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Rau JV, Fadeeva IV, Fomin AS, Barbaro K, Galvano E, Ryzhov AP, Murzakhanov F, Gafurov M, Orlinskii S, Antoniac I, Uskoković V. Sic Parvis Magna: Manganese-Substituted Tricalcium Phosphate and Its Biophysical Properties. ACS Biomater Sci Eng 2019; 5:6632-6644. [PMID: 33423482 DOI: 10.1021/acsbiomaterials.9b01528] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Succeeding in the substitution of pharmaceutical compounds with ions deliverable with the use of resorbable biomaterials could have far-reaching benefits for medicine and economy. Calcium phosphates are known as excellent accommodators of foreign ions. Manganese, the fifth most abundant metal on Earth was studied here as an ionic dopant in β-tricalcium phosphate (β-TCP) ceramics. β-TCP containing different amounts of Mn2+ ions per MnxCa3-x(PO4)2 formula (x = 0, 0.001, 0.01, and 0.1) was investigated for a range of physicochemical and biological properties. The results suggested the role of Mn2+ as a structure booster, not breaker. Mn2+ ions increased the size of coherent X-ray scattering regions averaged across all crystallographic directions and also lowered the temperature of transformation of the hydroxyapatite precursor to β-TCP. The particle size increased fivefold, from 20 to 100 nm, in the 650-750 °C region, indicating that the reaction of formation of β-TCP was accompanied by a considerable degree of grain growth. The splitting of the antisymmetric stretching mode of the phosphate tetrahedron occurred proportionally to the Mn2+ content in the material, while electron paramagnetic resonance spectra suggested that Mn2+ might substitute for three out of five possible calcium ion positions in the unit cell of β-TCP. The biological effects of Mn-free β-TCP and Mn-doped β-TCP were selective: moderately proliferative to mammalian cells, moderately inhibitory to bacteria, and insignificant to fungi. Unlike pure β-TCP, β-TCP doped with the highest concentration of Mn2+ ions significantly inhibited the growth of all bacterial species tested: Staphylococcus aureus, Salmonella typhi, Escherichia coli, Pseudomonas aeruginosa, and Enterococcus faecalis. The overall effect against the Gram-positive bacteria was more intense than against the Gram-negative microorganisms. Meanwhile, β-TCP alone had an augmentative effect of the viability of adipose-derived mesenchymal stem cells (ADMSCs) and the addition of Mn2+ tended to reduce the extent of this augmentative effect, but without imparting any toxicity. For all Mn-doped β-TCP concentrations except the highest, the cell viability after 72 h incubation was significantly higher than that of the negative control. Assays evaluating the effect of Mn2+-containing β-TCP formulations on the differentiation of ADMSCs into three different lineages-osteogenic, adipogenic, and chondrogenic-demonstrated no inhibitory or adverse effects compared to pure β-TCP and powder-free positive controls. Still, β-TCP delivering the lowest amount of Mn2+ seemed most effective in sustaining the differentiation process toward all three phenotypes, indicating that the dose of Mn2+ in β-TCP need not be excessive to be effective.
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Affiliation(s)
- Julietta V Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Inna V Fadeeva
- AA Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky prospect 49, 119334 Moscow, Russia
| | - Alexander S Fomin
- AA Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky prospect 49, 119334 Moscow, Russia
| | - Katia Barbaro
- Istituto Zooprofilattico Sperimentale Lazio e Toscana "M. Aleandri", Via Appia Nuova 1411, 00178 Rome, Italy
| | - Ettore Galvano
- Istituto Zooprofilattico Sperimentale Lazio e Toscana "M. Aleandri", Via Appia Nuova 1411, 00178 Rome, Italy
| | - Alexander P Ryzhov
- AA Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky prospect 49, 119334 Moscow, Russia
| | | | - Marat Gafurov
- Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
| | | | - Iulian Antoniac
- University Politehnica of Bucharest, Splaiul Independentei 313, Sector 6, 77206 Bucharest, Romania
| | - Vuk Uskoković
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Engineering Gateway 4200, Irvine, California 92697, United States
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24
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Biological indicators, genetic polymorphism and expression inAspergillus flavusunder copper mediated stress. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2013.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Manganese-induced cellular disturbance in the baker's yeast, Saccharomyces cerevisiae with putative implications in neuronal dysfunction. Sci Rep 2019; 9:6563. [PMID: 31024033 PMCID: PMC6484083 DOI: 10.1038/s41598-019-42907-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 04/09/2019] [Indexed: 12/24/2022] Open
Abstract
Manganese (Mn) is an essential element, but in humans, chronic and/or acute exposure to this metal can lead to neurotoxicity and neurodegenerative disorders including Parkinsonism and Parkinson’s Disease by unclear mechanisms. To better understand the effects that exposure to Mn2+ exert on eukaryotic cell biology, we exposed a non-essential deletion library of the yeast Saccharomyces cerevisiae to a sub-inhibitory concentration of Mn2+ followed by targeted functional analyses of the positive hits. This screen produced a set of 43 sensitive deletion mutants that were enriched for genes associated with protein biosynthesis. Our follow-up investigations demonstrated that Mn reduced total rRNA levels in a dose-dependent manner and decreased expression of a β-galactosidase reporter gene. This was subsequently supported by analysis of ribosome profiles that suggested Mn-induced toxicity was associated with a reduction in formation of active ribosomes on the mRNAs. Altogether, these findings contribute to the current understanding of the mechanism of Mn-triggered cytotoxicity. Lastly, using the Comparative Toxicogenomic Database, we revealed that Mn shared certain similarities in toxicological mechanisms with neurodegenerative disorders including amyotrophic lateral sclerosis, Alzheimer’s, Parkinson’s and Huntington’s diseases.
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26
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Hameed S, Hans S, Singh S, Fatima Z. Harnessing Metal Homeostasis Offers Novel and Promising Targets Against Candida albicans. Curr Drug Discov Technol 2019; 17:415-429. [PMID: 30827249 DOI: 10.2174/1570163816666190227231437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/08/2019] [Accepted: 01/30/2019] [Indexed: 11/22/2022]
Abstract
Fungal infections, particularly of Candida species, which are the commensal organisms of human, are one of the major debilitating diseases in immunocompromised patients. The limited number of antifungal drugs available to treat Candida infections, with the concomitant increasing incidence of multidrug-resistant (MDR) strains, further worsens the therapeutic options. Thus, there is an urgent need for the better understanding of MDR mechanisms, and their reversal, by employing new strategies to increase the efficacy and safety profiles of currently used therapies against the most prevalent human fungal pathogen, Candida albicans. Micronutrient availability during C. albicans infection is regarded as a critical factor that influences the progression and magnitude of the disease. Intracellular pathogens colonize a variety of anatomical locations that are likely to be scarce in micronutrients, as a defense strategy adopted by the host, known as nutritional immunity. Indispensable critical micronutrients are required both by the host and by C. albicans, especially as a cofactor in important metabolic functions. Since these micronutrients are not freely available, C. albicans need to exploit host reservoirs to adapt within the host for survival. The ability of pathogenic organisms, including C. albicans, to sense and adapt to limited micronutrients in the hostile environment is essential for survival and confers the basis of its success as a pathogen. This review describes that micronutrients availability to C. albicans is a key attribute that may be exploited when one considers designing strategies aimed at disrupting MDR in this pathogenic fungi. Here, we discuss recent advances that have been made in our understanding of fungal micronutrient acquisition and explore the probable pathways that may be utilized as targets.
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Affiliation(s)
- Saif Hameed
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
| | - Sandeep Hans
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
| | - Shweta Singh
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
| | - Zeeshan Fatima
- Amity Institute of Biotechnology, Amity University Haryana, Gurugram (Manesar)-122413, India
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27
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Berterame NM, Martani F, Porro D, Branduardi P. Copper homeostasis as a target to improve Saccharomyces cerevisiae tolerance to oxidative stress. Metab Eng 2019; 46:43-50. [PMID: 29477856 DOI: 10.1016/j.ymben.2018.02.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 01/19/2023]
Abstract
The yeast Saccharomyces cerevisiae is widely used as a cell factory for the biotechnological production of various industrial products. During these processes, yeasts meet different kinds of stressors that often cause oxidative stress and thus impair cell growth. Therefore, the development of robust strains is indispensable to improve production, yield and productivity of fermentative processes. Copper plays a key role in the response to oxidative stress, as cofactor of the cytosolic superoxide dismutase (Sod1) and being contained in metallochaperone and metallothioneines with antioxidant properties. In this work, we observed a higher naturally copper internalization in a robust S. cerevisiae strain engineered to produce the antioxidant l-ascorbic acid (L-AA), compared with the wild type strain. Therefore, we investigated the effect of the alteration of copper homeostasis on cellular stress tolerance. CTR1 and FRE1 genes, codifying for a plasma membrane high-affinity copper transporter and for a cell-surface ferric/cupric reductase, respectively, were overexpressed in both wild type and L-AA cells. Remarkably, we found that the sole FRE1 overexpression was sufficient to increase copper internalization leading to an enhanced stress tolerance toward H2O2 exposure, in both strains under investigation. These findings reveal copper homeostasis as a target for the development of robust cell factories.
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Affiliation(s)
- Nadia Maria Berterame
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126 Milan, Italy; Galatea Biotech Srl, Piazza della Scienza 2, 20126 Milan, Italy
| | - Francesca Martani
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126 Milan, Italy
| | - Danilo Porro
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126 Milan, Italy
| | - Paola Branduardi
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126 Milan, Italy.
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Kamei Y, Koushi M, Aoyama Y, Asakai R. The yeast mitochondrial permeability transition is regulated by reactive oxygen species, endogenous Ca 2+ and Cpr3, mediating cell death. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2018; 1859:1313-1326. [PMID: 30031690 DOI: 10.1016/j.bbabio.2018.07.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 11/29/2022]
Abstract
We investigated the properties of the permeability transition pore (PTP) in Saccharomyces cerevisiae in agar-embedded mitochondria (AEM) and agar-embedded cells (AEC) and its role in yeast death. In AEM, ethanol-induced pore opening, as indicated by the release of calcein and mitochondrial membrane depolarization, can be inhibited by CsA, by Cpr3 deficiency, and by the antioxidant glutathione. Notably, the pore opening is inhibited, when mitochondria are preloaded by EGTA or Fluo3 to chelate matrix Ca2+, or are pretreated with 4-Br A23187 to extract matrix Ca2+, prior to agar-embedding, or when pore opening is induced in the presence of EGTA; opened pores are re-closed by sequential treatment with CsA, 4-Br A23187 plus EGTA and NADH, indicating endogenous matrix Ca2+ involvement. CsA also inhibits the pore opening with low conductance triggered by exogenous Ca2+ transport with ETH129. In AEC, the treatment of tert-butylhydroperoxide, a pro-oxidant that triggers transient pore opening in high conductance in AEM, induces yeast death, which is also dependent on CsA and Cpr3. Furthermore, AEMs from mutants lacking three ADP/ATP carrier (AAC) isoforms and with defective ATP synthase dimerization exhibit high and low conductance pore openings with CsA sensitivity, respectively. Collectively, these data show that the yeast PTP is regulated by Cpr3, endogenous matrix Ca2+, and reactive oxygen species, and that it is involved in yeast death; furthermore, ATP synthase dimers play a key role in CsA-sensitive pore formation, while AACs are dispensable.
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Affiliation(s)
- Yoshiko Kamei
- Department of Morphophysiology, Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Masami Koushi
- Department of Morphophysiology, Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Yasunori Aoyama
- Department of Morphophysiology, Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan
| | - Rei Asakai
- Department of Morphophysiology, Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba 283-8555, Japan.
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29
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Carmona-Gutierrez D, Bauer MA, Zimmermann A, Aguilera A, Austriaco N, Ayscough K, Balzan R, Bar-Nun S, Barrientos A, Belenky P, Blondel M, Braun RJ, Breitenbach M, Burhans WC, Büttner S, Cavalieri D, Chang M, Cooper KF, Côrte-Real M, Costa V, Cullin C, Dawes I, Dengjel J, Dickman MB, Eisenberg T, Fahrenkrog B, Fasel N, Fröhlich KU, Gargouri A, Giannattasio S, Goffrini P, Gourlay CW, Grant CM, Greenwood MT, Guaragnella N, Heger T, Heinisch J, Herker E, Herrmann JM, Hofer S, Jiménez-Ruiz A, Jungwirth H, Kainz K, Kontoyiannis DP, Ludovico P, Manon S, Martegani E, Mazzoni C, Megeney LA, Meisinger C, Nielsen J, Nyström T, Osiewacz HD, Outeiro TF, Park HO, Pendl T, Petranovic D, Picot S, Polčic P, Powers T, Ramsdale M, Rinnerthaler M, Rockenfeller P, Ruckenstuhl C, Schaffrath R, Segovia M, Severin FF, Sharon A, Sigrist SJ, Sommer-Ruck C, Sousa MJ, Thevelein JM, Thevissen K, Titorenko V, Toledano MB, Tuite M, Vögtle FN, Westermann B, Winderickx J, Wissing S, Wölfl S, Zhang ZJ, Zhao RY, Zhou B, Galluzzi L, Kroemer G, Madeo F. Guidelines and recommendations on yeast cell death nomenclature. MICROBIAL CELL (GRAZ, AUSTRIA) 2018; 5:4-31. [PMID: 29354647 PMCID: PMC5772036 DOI: 10.15698/mic2018.01.607] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 12/29/2017] [Indexed: 12/18/2022]
Abstract
Elucidating the biology of yeast in its full complexity has major implications for science, medicine and industry. One of the most critical processes determining yeast life and physiology is cel-lular demise. However, the investigation of yeast cell death is a relatively young field, and a widely accepted set of concepts and terms is still missing. Here, we propose unified criteria for the defi-nition of accidental, regulated, and programmed forms of cell death in yeast based on a series of morphological and biochemical criteria. Specifically, we provide consensus guidelines on the differ-ential definition of terms including apoptosis, regulated necrosis, and autophagic cell death, as we refer to additional cell death rou-tines that are relevant for the biology of (at least some species of) yeast. As this area of investigation advances rapidly, changes and extensions to this set of recommendations will be implemented in the years to come. Nonetheless, we strongly encourage the au-thors, reviewers and editors of scientific articles to adopt these collective standards in order to establish an accurate framework for yeast cell death research and, ultimately, to accelerate the pro-gress of this vibrant field of research.
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Affiliation(s)
| | - Maria Anna Bauer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Andreas Zimmermann
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Andrés Aguilera
- Centro Andaluz de Biología, Molecular y Medicina Regenerativa-CABIMER, Universidad de Sevilla, Sevilla, Spain
| | | | - Kathryn Ayscough
- Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - Rena Balzan
- Department of Physiology and Biochemistry, University of Malta, Msida, Malta
| | - Shoshana Bar-Nun
- Department of Biochemistry and Molecular Biology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Antonio Barrientos
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, USA
- Department of Neurology, University of Miami Miller School of Medi-cine, Miami, USA
| | - Peter Belenky
- Department of Molecular Microbiology and Immunology, Brown University, Providence, USA
| | - Marc Blondel
- Institut National de la Santé et de la Recherche Médicale UMR1078, Université de Bretagne Occidentale, Etablissement Français du Sang Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Ralf J. Braun
- Institute of Cell Biology, University of Bayreuth, Bayreuth, Germany
| | | | - William C. Burhans
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Sabrina Büttner
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | | | - Michael Chang
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Katrina F. Cooper
- Dept. Molecular Biology, Graduate School of Biomedical Sciences, Rowan University, Stratford, USA
| | - Manuela Côrte-Real
- Center of Molecular and Environmental Biology, Department of Biology, University of Minho, Braga, Portugal
| | - Vítor Costa
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | | | - Ian Dawes
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Martin B. Dickman
- Institute for Plant Genomics and Biotechnology, Texas A&M University, Texas, USA
| | - Tobias Eisenberg
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Birthe Fahrenkrog
- Laboratory Biology of the Nucleus, Institute for Molecular Biology and Medicine, Université Libre de Bruxelles, Charleroi, Belgium
| | - Nicolas Fasel
- Department of Biochemistry, University of Lausanne, Lausanne, Switzerland
| | - Kai-Uwe Fröhlich
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Ali Gargouri
- Laboratoire de Biotechnologie Moléculaire des Eucaryotes, Center de Biotechnologie de Sfax, Sfax, Tunisia
| | - Sergio Giannattasio
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, Bari, Italy
| | - Paola Goffrini
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Campbell W. Gourlay
- Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - Chris M. Grant
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Michael T. Greenwood
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada
| | - Nicoletta Guaragnella
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, Bari, Italy
| | | | - Jürgen Heinisch
- Department of Biology and Chemistry, University of Osnabrück, Osnabrück, Germany
| | - Eva Herker
- Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | | | - Sebastian Hofer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | | | - Helmut Jungwirth
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Katharina Kainz
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Dimitrios P. Kontoyiannis
- Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Paula Ludovico
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Minho, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Stéphen Manon
- Institut de Biochimie et de Génétique Cellulaires, UMR5095, CNRS & Université de Bordeaux, Bordeaux, France
| | - Enzo Martegani
- Department of Biotechnolgy and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Cristina Mazzoni
- Instituto Pasteur-Fondazione Cenci Bolognetti - Department of Biology and Biotechnology "C. Darwin", La Sapienza University of Rome, Rome, Italy
| | - Lynn A. Megeney
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
- Department of Medicine, Division of Cardiology, University of Ottawa, Ottawa, Canada
| | - Chris Meisinger
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jens Nielsen
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, Gothenburg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, DK2800 Lyngby, Denmark
| | - Thomas Nyström
- Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Heinz D. Osiewacz
- Institute for Molecular Biosciences, Goethe University, Frankfurt am Main, Germany
| | - Tiago F. Outeiro
- Department of Experimental Neurodegeneration, Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Göttingen, Göttingen, Germany
- Max Planck Institute for Experimental Medicine, Göttingen, Germany
- Institute of Neuroscience, The Medical School, Newcastle University, Framlington Place, Newcastle Upon Tyne, NE2 4HH, United Kingdom
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Hay-Oak Park
- Department of Molecular Genetics, The Ohio State University, Columbus, OH, USA
| | - Tobias Pendl
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Dina Petranovic
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, Gothenburg, Sweden
| | - Stephane Picot
- Malaria Research Unit, SMITh, ICBMS, UMR 5246 CNRS-INSA-CPE-University Lyon, Lyon, France
- Institut of Parasitology and Medical Mycology, Hospices Civils de Lyon, Lyon, France
| | - Peter Polčic
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Ted Powers
- Department of Molecular and Cellular Biology, College of Biological Sciences, UC Davis, Davis, California, USA
| | - Mark Ramsdale
- Biosciences, University of Exeter, Exeter, United Kingdom
| | - Mark Rinnerthaler
- Department of Cell Biology and Physiology, Division of Genetics, University of Salzburg, Salzburg, Austria
| | - Patrick Rockenfeller
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, United Kingdom
| | | | - Raffael Schaffrath
- Institute of Biology, Division of Microbiology, University of Kassel, Kassel, Germany
| | - Maria Segovia
- Department of Ecology, Faculty of Sciences, University of Malaga, Malaga, Spain
| | - Fedor F. Severin
- A.N. Belozersky Institute of physico-chemical biology, Moscow State University, Moscow, Russia
| | - Amir Sharon
- School of Plant Sciences and Food Security, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Stephan J. Sigrist
- Institute for Biology/Genetics, Freie Universität Berlin, Berlin, Germany
| | - Cornelia Sommer-Ruck
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Maria João Sousa
- Center of Molecular and Environmental Biology, Department of Biology, University of Minho, Braga, Portugal
| | - Johan M. Thevelein
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Belgium
- Center for Microbiology, VIB, Leuven-Heverlee, Belgium
| | - Karin Thevissen
- Centre of Microbial and Plant Genetics, KU Leuven, Leuven, Belgium
| | | | - Michel B. Toledano
- Institute for Integrative Biology of the Cell (I2BC), SBIGEM, CEA-Saclay, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Mick Tuite
- Kent Fungal Group, School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - F.-Nora Vögtle
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | - Joris Winderickx
- Department of Biology, Functional Biology, KU Leuven, Leuven-Heverlee, Belgium
| | | | - Stefan Wölfl
- Institute of Pharmacy and Molecu-lar Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Zhaojie J. Zhang
- Department of Zoology and Physiology, University of Wyoming, Laramie, USA
| | - Richard Y. Zhao
- Department of Pathology, University of Maryland School of Medicine, Baltimore, USA
| | - Bing Zhou
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA
- Sandra and Edward Meyer Cancer Center, New York, NY, USA
- Université Paris Descartes/Paris V, Paris, France
| | - Guido Kroemer
- Université Paris Descartes/Paris V, Paris, France
- Equipe 11 Labellisée Ligue Contre le Cancer, Centre de Recherche des Cordeliers, Paris, France
- Cell Biology and Metabolomics Platforms, Gustave Roussy Comprehensive Cancer Center, Villejuif, France
- INSERM, U1138, Paris, France
- Université Pierre et Marie Curie/Paris VI, Paris, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou, Paris, France
- Institute, Department of Women’s and Children’s Health, Karolinska University Hospital, Stockholm, Sweden
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
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30
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Gerwien F, Skrahina V, Kasper L, Hube B, Brunke S. Metals in fungal virulence. FEMS Microbiol Rev 2018; 42:4562650. [PMID: 29069482 PMCID: PMC5812535 DOI: 10.1093/femsre/fux050] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/19/2017] [Indexed: 12/25/2022] Open
Abstract
Metals are essential for life, and they play a central role in the struggle between infecting microbes and their hosts. In fact, an important aspect of microbial pathogenesis is the 'nutritional immunity', in which metals are actively restricted (or, in an extended definition of the term, locally enriched) by the host to hinder microbial growth and virulence. Consequently, fungi have evolved often complex regulatory networks, uptake and detoxification systems for essential metals such as iron, zinc, copper, nickel and manganese. These systems often differ fundamentally from their bacterial counterparts, but even within the fungal pathogens we can find common and unique solutions to maintain metal homeostasis. Thus, we here compare the common and species-specific mechanisms used for different metals among different fungal species-focusing on important human pathogens such as Candida albicans, Aspergillus fumigatus or Cryptococcus neoformans, but also looking at model fungi such as Saccharomyces cerevisiae or A. nidulans as well-studied examples for the underlying principles. These direct comparisons of our current knowledge reveal that we have a good understanding how model fungal pathogens take up iron or zinc, but that much is still to learn about other metals and specific adaptations of individual species-not the least to exploit this knowledge for new antifungal strategies.
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Affiliation(s)
- Franziska Gerwien
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology– Hans Knoell Institute, 07745 Jena, Germany
| | - Volha Skrahina
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology– Hans Knoell Institute, 07745 Jena, Germany
| | - Lydia Kasper
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology– Hans Knoell Institute, 07745 Jena, Germany
| | - Bernhard Hube
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology– Hans Knoell Institute, 07745 Jena, Germany
| | - Sascha Brunke
- Department Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology– Hans Knoell Institute, 07745 Jena, Germany
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31
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Eid R, Zhou DR, Arab NTT, Boucher E, Young PG, Mandato CA, Greenwood MT. Heterologous expression of anti-apoptotic human 14-3-3β/α enhances iron-mediated programmed cell death in yeast. PLoS One 2017; 12:e0184151. [PMID: 28854230 PMCID: PMC5576682 DOI: 10.1371/journal.pone.0184151] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 08/20/2017] [Indexed: 01/06/2023] Open
Abstract
The induction of Programmed Cell Death (PCD) requires the activation of complex responses involving the interplay of a variety of different cellular proteins, pathways, and processes. Uncovering the mechanisms regulating PCD requires an understanding of the different processes that both positively and negatively regulate cell death. Here we have examined the response of normal as well as PCD resistant yeast cells to different PCD inducing stresses. As expected cells expressing the pro-survival human 14-3-3β/α sequence show increased resistance to numerous stresses including copper and rapamycin. In contrast, other stresses including iron were more lethal in PCD resistant 14-3-3β/α expressing cells. The increased sensitivity to PCD was not iron and 14-3-3β/α specific since it was also observed with other stresses (hydroxyurea and zinc) and other pro-survival sequences (human TC-1 and H-ferritin). Although microscopical examination revealed little differences in morphology with iron or copper stresses, cells undergoing PCD in response to high levels of prolonged copper treatment were reduced in size. This supports the interaction some forms of PCD have with the mechanisms regulating cell growth. Analysis of iron-mediated effects in yeast mutant strains lacking key regulators suggests that a functional vacuole is required to mediate the synergistic effects of iron and 14-3-3β/α on yeast PCD. Finally, mild sub-lethal levels of copper were found to attenuate the observed inhibitory effects of iron. Taken together, we propose a model in which a subset of stresses like iron induces a complex process that requires the cross-talk of two different PCD inducing pathways.
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Affiliation(s)
- Rawan Eid
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - David R. Zhou
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Nagla T. T. Arab
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Eric Boucher
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Paul G. Young
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Craig A. Mandato
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Michael T. Greenwood
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada
- * E-mail:
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Robinson C, Denison C, Burkenstock A, Nutter C, Gordon D. Cellular conditions that modulate the fungicidal activity of occidiofungin. J Appl Microbiol 2017; 123:380-391. [DOI: 10.1111/jam.13496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/07/2017] [Accepted: 05/23/2017] [Indexed: 01/14/2023]
Affiliation(s)
- C.A. Robinson
- Department of Biological Sciences; Mississippi State University; Mississippi State MS USA
| | - C. Denison
- Department of Biological Sciences; Mississippi State University; Mississippi State MS USA
| | - A. Burkenstock
- Department of Biological Sciences; Mississippi State University; Mississippi State MS USA
| | - C. Nutter
- Department of Biological Sciences; Mississippi State University; Mississippi State MS USA
| | - D.M. Gordon
- Department of Biological Sciences; Mississippi State University; Mississippi State MS USA
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33
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Pasquali F, Agrimonti C, Pagano L, Zappettini A, Villani M, Marmiroli M, White JC, Marmiroli N. Nucleo-mitochondrial interaction of yeast in response to cadmium sulfide quantum dot exposure. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:744-752. [PMID: 27890358 DOI: 10.1016/j.jhazmat.2016.11.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/16/2016] [Accepted: 11/19/2016] [Indexed: 06/06/2023]
Abstract
Cell sensitivity to quantum dots (QDs) has been attributed to a cascade triggered by oxidative stress leading to apoptosis. The role and function of mitochondria in animal cells are well understood but little information is available on the complex genetic networks that regulate nucleo-mitochondrial interaction. The effect of CdS QD exposure in yeast Saccharomyces cerevisiae was assessed under conditions of limited lethality (<10%), using cell physiological and morphological endpoints. Whole-genomic array analysis and the screening of a deletion mutant library were also carried out. The results showed that QDs: increased the level of reactive oxygen species (ROS) and decreased the level of reduced vs oxidized glutathione (GSH/GSSG); reduced oxygen consumption and the abundance of respiratory cytochromes; disrupted mitochondrial membrane potentials and affected mitochondrial morphology. Exposure affected the capacity of cells to grow on galactose, which requires nucleo-mitochondrial involvement. However, QDs exposure did not materially induce respiratory deficient (RD) mutants but only RD phenocopies. All of these cellular changes were correlated with several key nuclear genes, including TOM5 and FKS1, involved in the maintenance of mitochondrial organization and function. The consequences of these cellular effects are discussed in terms of dysregulation of cell function in response to these "pathological mitochondria".
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Affiliation(s)
| | | | - Luca Pagano
- Department of Life Sciences, University of Parma, Parma, Italy; Stockbridge school of Agriculture, University of Massachusetts, Amherst, MA, USA; The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Andrea Zappettini
- IMEM-CNR - Istituto dei Materiali per l'Elettronica ed il Magnetismo, Parma, Italy
| | - Marco Villani
- IMEM-CNR - Istituto dei Materiali per l'Elettronica ed il Magnetismo, Parma, Italy
| | - Marta Marmiroli
- Department of Life Sciences, University of Parma, Parma, Italy
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Nelson Marmiroli
- Department of Life Sciences, University of Parma, Parma, Italy; CINSA - Consorzio Interuniversitario Nazionale per le Scienze Ambientali, University of Parma, Parma, Italy.
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Smith MR, Fernandes J, Go YM, Jones DP. Redox dynamics of manganese as a mitochondrial life-death switch. Biochem Biophys Res Commun 2017; 482:388-398. [PMID: 28212723 PMCID: PMC5382988 DOI: 10.1016/j.bbrc.2016.10.126] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 12/16/2022]
Abstract
Sten Orrenius, M.D., Ph.D., pioneered many areas of cellular and molecular toxicology and made seminal contributions to our knowledge of oxidative stress and glutathione (GSH) metabolism, organellar functions and Ca+2-dependent mechanisms of cell death, and mechanisms of apoptosis. On the occasion of his 80th birthday, we summarize current knowledge on redox biology of manganese (Mn) and its role in mechanisms of cell death. Mn is found in all organisms and has critical roles in cell survival and death mechanisms by regulating Mn-containing enzymes such as manganese superoxide dismutase (SOD2) or affecting expression and activity of caspases. Occupational exposures to Mn cause "manganism", a Parkinson's disease-like condition of neurotoxicity, and experimental studies show that Mn exposure leads to accumulation of Mn in the brain, especially in mitochondria, and neuronal cell death occurs with features of an apoptotic mechanism. Interesting questions are why a ubiquitous metal that is essential for mitochondrial function would accumulate to excessive levels, cause increased H2O2 production and lead to cell death. Is this due to the interactions of Mn with other essential metals, such as iron, or with toxic metals, such as cadmium? Why is the Mn loading in the human brain so variable, and why is there such a narrow window between dietary adequacy and toxicity? Are non-neuronal tissues similarly vulnerable to insufficiency and excess, yet not characterized? We conclude that Mn is an important component of the redox interface between an organism and its environment and warrants detailed studies to understand the role of Mn as a mitochondrial life-death switch.
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Affiliation(s)
- Matthew Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Jolyn Fernandes
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA.
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Gutiérrez-Beltrán E, Personat JM, de la Torre F, Del Pozo O. A Universal Stress Protein Involved in Oxidative Stress Is a Phosphorylation Target for Protein Kinase CIPK6. PLANT PHYSIOLOGY 2017; 173:836-852. [PMID: 27899535 PMCID: PMC5210712 DOI: 10.1104/pp.16.00949] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 11/26/2016] [Indexed: 05/27/2023]
Abstract
Calcineurin B-like interacting protein kinases (CIPKs) decode calcium signals upon interaction with the calcium sensors calcineurin B like proteins into phosphorylation events that result into adaptation to environmental stresses. Few phosphorylation targets of CIPKs are known and therefore the molecular mechanisms underlying their downstream output responses are not fully understood. Tomato (Solanum lycopersicum) Cipk6 regulates immune and susceptible Programmed cell death in immunity transforming Ca2+ signals into reactive oxygen species (ROS) signaling. To investigate SlCipk6-induced molecular mechanisms and identify putative substrates, a yeast two-hybrid approach was carried on and a protein was identified that contained a Universal stress protein (Usp) domain present in bacteria, protozoa and plants, which we named "SlRd2". SlRd2 was an ATP-binding protein that formed homodimers in planta. SlCipk6 and SlRd2 interacted using coimmunoprecipitation and bimolecular fluorescence complementation (BiFC) assays in Nicotiana benthamiana leaves and the complex localized in the cytosol. SlCipk6 phosphorylated SlRd2 in vitro, thus defining, to our knowledge, a novel target for CIPKs. Heterologous SlRd2 overexpression in yeast conferred resistance to highly toxic LiCl, whereas SlRd2 expression in Escherichia coli UspA mutant restored bacterial viability in response to H2O2 treatment. Finally, transient expression of SlCipk6 in transgenic N benthamiana SlRd2 overexpressors resulted in reduced ROS accumulation as compared to wild-type plants. Taken together, our results establish that SlRd2, a tomato UspA, is, to our knowledge, a novel interactor and phosphorylation target of a member of the CIPK family, SlCipk6, and functionally regulates SlCipk6-mediated ROS generation.
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Affiliation(s)
- Emilio Gutiérrez-Beltrán
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla/Consejo Superior de Investigaciones Científicas, 41092 Sevilla, Spain
| | - José María Personat
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla/Consejo Superior de Investigaciones Científicas, 41092 Sevilla, Spain
| | - Fernando de la Torre
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla/Consejo Superior de Investigaciones Científicas, 41092 Sevilla, Spain
| | - Olga Del Pozo
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla/Consejo Superior de Investigaciones Científicas, 41092 Sevilla, Spain
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Ruta LL, Popa CV, Nicolau I, Farcasanu IC. Calcium signaling and copper toxicity in Saccharomyces cerevisiae cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:24514-24526. [PMID: 27094270 DOI: 10.1007/s11356-016-6666-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/10/2016] [Indexed: 06/05/2023]
Abstract
To respond to metal surpluses, cells have developed intricate ways of defense against the excessive metallic ions. To understand the ways in which cells sense the presence of toxic concentration in the environment, the role of Ca2+ in mediating the cell response to high Cu2+ was investigated in Saccharomyces cerevisiae cells. It was found that the cell exposure to high Cu2+ was accompanied by elevations in cytosolic Ca2+ with patterns that were influenced not only by Cu2+ concentration but also by the oxidative state of the cell. When Ca2+ channel deletion mutants were used, it was revealed that the main contributor to the cytosolic Ca2+ pool under Cu2+ stress was the vacuolar Ca2+ channel, Yvc1, also activated by the Cch1-mediated Ca2+ influx. Using yeast mutants defective in the Cu2+ transport across the plasma membrane, it was found that the Cu2+-dependent Ca2+ elevation could correlate not only with the accumulated metal, but also with the overall oxidative status. Moreover, it was revealed that Cu2+ and H2O2 acted in synergy to induce Ca2+-mediated responses to external stress.
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Affiliation(s)
- Lavinia L Ruta
- Faculty of Chemistry, University of Bucharest, Sos. Panduri 90-92, Bucharest, Romania
| | - Claudia V Popa
- Faculty of Chemistry, University of Bucharest, Sos. Panduri 90-92, Bucharest, Romania
| | - Ioana Nicolau
- Faculty of Chemistry, University of Bucharest, Sos. Panduri 90-92, Bucharest, Romania
| | - Ileana C Farcasanu
- Faculty of Chemistry, University of Bucharest, Sos. Panduri 90-92, Bucharest, Romania.
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Kunjunni R, Sathianathan S, Behari M, Chattopadhyay P, Subbiah V. Silencing of Human CutC Gene (hCutC) Induces Apoptosis in HepG2 Cells. Biol Trace Elem Res 2016; 172:120-126. [PMID: 26660891 DOI: 10.1007/s12011-015-0577-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/25/2015] [Indexed: 11/30/2022]
Abstract
Copper is an essential microelement required for maintaining normal cell physiology. Copper transporter CutC is one of the six members of Cut family proteins, involved in prokaryotic copper homeostasis. Human homolog of CutC (hCutC) is an intracellular copper-binding protein with unknown physiological function. In the present study using HepG2 cells, we report the effects of hCutC knockdown on copper sensitivity and morphology of cells that ultimately leads to apoptosis. We silenced hCutC using specific small interfering RNA (siRNA), and its downregulation was confirmed by quantitative real-time PCR. Though there was no significant variation in total cellular copper as estimated by inductively coupled plasma-atomic emission spectrometry (ICP-AES), knockdown of hCutC caused an increase in sensitivity of HepG2 cells to copper loads when compared to control cells (studied by MTT-based cell viability assay). Morphological analysis by transmission electron microscopy (TEM) indicated onset of apoptosis in hCutC-silenced cells which was exacerbated upon copper treatment. Mitochondrial transmembrane potential (ΔΨm) assay and DNA fragmentation assay further ensured apoptosis occurring in cells upon hCutC silencing. The present study reveals copper induced damage in cells upon hCutC silencing and provides evidence for the role of hCutC protein in intracellular copper homeostasis.
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Affiliation(s)
- Remesh Kunjunni
- Department of Neurobiochemistry, India Institute of Medical Sciences, New Delhi, -110029, India
| | - Sandeep Sathianathan
- Department of Neurobiochemistry, India Institute of Medical Sciences, New Delhi, -110029, India
| | - Madhuri Behari
- Department of Neurology, India Institute of Medical Sciences, New Delhi, -110029, India
| | | | - Vivekanandhan Subbiah
- Department of Neurobiochemistry, India Institute of Medical Sciences, New Delhi, -110029, India.
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Verbandt S, Cammue BPA, Thevissen K. Yeast as a model for the identification of novel survival-promoting compounds applicable to treat degenerative diseases. Mech Ageing Dev 2016; 161:306-316. [PMID: 27287065 DOI: 10.1016/j.mad.2016.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/31/2016] [Accepted: 06/07/2016] [Indexed: 12/18/2022]
Abstract
Programmed cell death (PCD) plays an important role in development and normal metabolic functioning of organisms. Excessive cell death is the cause of many degenerative diseases, like neurodegenerative disorders and Wilson's disease, for which current therapies remain insufficient. Current therapies are mainly focused on decreasing the disease symptoms following cell death, rather than blocking the cell death process itself. The latter can be obtained by either decreasing the presence of the toxic trigger (like protein aggregation in case of many commonly known neurodegenerative diseases) or by blocking death-inducing signaling cascade(s). Given the high conservation in PCD processes between yeast and mammalian cells, in this review, we will focus on yeast as a model organism to study PCD-related diseases as well as on its use for drug discovery purposes. More specifically, we will provide a comprehensive overview of new compounds, which were identified in yeast-based drug screens, that either decrease the amount of toxic trigger or inhibit PCD signaling cascades under PCD-inducing conditions.
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Affiliation(s)
- Sara Verbandt
- Centre of Microbial and Plant Genetics CMPG, KU Leuven, Kasteelpark Arenberg 20, Box 2460, 3001, Leuven, Belgium
| | - Bruno P A Cammue
- Centre of Microbial and Plant Genetics CMPG, KU Leuven, Kasteelpark Arenberg 20, Box 2460, 3001, Leuven, Belgium; Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Ghent, Belgium.
| | - Karin Thevissen
- Centre of Microbial and Plant Genetics CMPG, KU Leuven, Kasteelpark Arenberg 20, Box 2460, 3001, Leuven, Belgium
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Falcone C, Mazzoni C. External and internal triggers of cell death in yeast. Cell Mol Life Sci 2016; 73:2237-50. [PMID: 27048816 PMCID: PMC4887522 DOI: 10.1007/s00018-016-2197-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/18/2016] [Indexed: 01/30/2023]
Abstract
In recent years, yeast was confirmed as a useful eukaryotic model system to decipher the complex mechanisms and networks occurring in higher eukaryotes, particularly in mammalian cells, in physiological as well in pathological conditions. This article focuses attention on the contribution of yeast in the study of a very complex scenario, because of the number and interconnection of pathways, represented by cell death. Yeast, although it is a unicellular organism, possesses the basal machinery of different kinds of cell death occurring in higher eukaryotes, i.e., apoptosis, regulated necrosis and autophagy. Here we report the current knowledge concerning the yeast orthologs of main mammalian cell death regulators and executors, the role of organelles and compartments, and the cellular phenotypes observed in the different forms of cell death in response to external and internal triggers. Thanks to the ease of genetic manipulation of this microorganism, yeast strains expressing human genes that promote or counteract cell death, onset of tumors and neurodegenerative diseases have been constructed. The effects on yeast cells of some of these genes are also presented.
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Affiliation(s)
- Claudio Falcone
- Pasteur Institute-Cenci Bolognetti Foundation; Department of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Cristina Mazzoni
- Pasteur Institute-Cenci Bolognetti Foundation; Department of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
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Saito F, Sakamoto I, Kanatani A, Chiba Y. Manganese ion concentration affects production of human core 3 O-glycan in Saccharomyces cerevisiae. Biochim Biophys Acta Gen Subj 2016; 1860:1809-20. [PMID: 27259834 DOI: 10.1016/j.bbagen.2016.05.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/23/2016] [Accepted: 05/28/2016] [Indexed: 01/25/2023]
Abstract
BACKGROUND Production of various mucin-like glycoproteins could be useful for development of antibodies specific to disease-related glycoproteins as well as for the biosynthesis of clinically useful glycoproteins. A Saccharomyces cerevisiae strain capable of in vivo production of mucin-type core 1 structure (Galβ1-3GalNAcα1-O-Ser/Thr) has been reported, but a strain producing core 3 structure (GlcNAcβ1-3GalNAcα1-O-Ser/Thr) has not been constructed. METHODS To generate core 3-producing strain, genes encoding uridine diphosphate (UDP)-Gal-4-epimerase, UDP-GalNAc transporter, UDP-GlcNAc transporter, and two glycosyltransferases were integrated into the genome. A Mucin-1-derived acceptor peptide (MUC1ap) was expressed as an acceptor. The amount of the resulting modified peptide was analyzed by HPLC. RESULTS Introduction of a codon-optimized UDP-GlcNAc:βGal β-1,3-N-acetylglucosaminyltransferase 6 (β3Gn-T6) gene yielded increases in β3Gn-T6 activity but did not alter the level of core 3 production. The highest in vitro activity of β3Gn-T6 was observed at Mn(2+) concentrations of 10mM and above. Supplementation of MnCl2 to the culture medium yielded increases of up to 25% in the accumulation of core 3 on the MUC1ap. The yeast invertase from the core 3-producing strain was less extensively N-glycosylated; however, it was partially restored by the addition of MnCl2 to the medium. CONCLUSIONS Physiological Mn(2+) concentration in S. cerevisiae was insufficient to facilitate optimal synthesis of core 3. Mn(2+) supplementation led to up-regulation of reaction of glycosylation in the Golgi, resulting in increases of core 3 production. GENERAL SIGNIFICANCE This study reveals that control of Mn(2+) concentration is important for production of specific mammalian-type glycans in S. cerevisiae.
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Affiliation(s)
- Fumie Saito
- Biotechnology Research Institute for Drug Discovery, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan; GlycoGene Inc., Avenue Takanawa Rm. 412, 3-25-27, Takanawa, Minato-ku, Tokyo 108-0074, Japan
| | - Izumi Sakamoto
- AcroScale Inc., 3-8-1 Kokubun-cho, Aoba-ku, Sendai, Miyagi 980-0803, Japan
| | - Akio Kanatani
- GlycoGene Inc., Avenue Takanawa Rm. 412, 3-25-27, Takanawa, Minato-ku, Tokyo 108-0074, Japan
| | - Yasunori Chiba
- Biotechnology Research Institute for Drug Discovery, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
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Abstract
Apoptosis or programmed cell death (PCD) was initially described in metazoans as a genetically controlled process leading to intracellular breakdown and engulfment by a neighboring cell . This process was distinguished from other forms of cell death like necrosis by maintenance of plasma membrane integrity prior to engulfment and the well-defined genetic system controlling this process. Apoptosis was originally described as a mechanism to reshape tissues during development. Given this context, the assumption was made that this process would not be found in simpler eukaryotes such as budding yeast. Although basic components of the apoptotic pathway were identified in yeast, initial observations suggested that it was devoid of prosurvival and prodeath regulatory proteins identified in mammalian cells. However, as apoptosis became extensively linked to the elimination of damaged cells, key PCD regulatory proteins were identified in yeast that play similar roles in mammals. This review highlights recent discoveries that have permitted information regarding PCD regulation in yeast to now inform experiments in animals.
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Prakash A, Dhaliwal GK, Kumar P, Majeed ABA. Brain biometals and Alzheimer's disease - boon or bane? Int J Neurosci 2016; 127:99-108. [PMID: 27044501 DOI: 10.3109/00207454.2016.1174118] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia. Several hypotheses have been put forward to explain the basis of disease onset and progression. A complicated array of molecular events has been implicated in the pathogenesis of AD. It is attributed to a variety of pathological conditions that share similar critical processes, such as oxidative stress, proteinaceous aggregations, mitochondrial dysfunctions and energy failure. There is increasing evidence suggesting that metal homeostasis is dysregulated in the pathology of AD. Biometals play an important role in the normal body functioning but AD may be mediated or triggered by disproportion of metal ions leading to changes in critical biological systems and initiating a cascade of events finally leading to neurodegeneration and cell death. The link is multifactorial, and although the source of the shift in oxidative homeostasis is still unclear, current evidence points to changes in the balance of redox transition metals, especially iron, copper (Cu) and other trace metals. Their levels in the brain are found to be elevated in AD. In other neurodegenerative disorders, Cu, zinc, aluminum and manganese are involved. This paper is a review of recent advances of the role of metals in the pathogenesis and pathophysiology of AD and related neurodegenerative diseases.
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Affiliation(s)
- Atish Prakash
- a 1 Faculty of Pharmacy , UniversitiTeknologi MARA (UiTM) , Puncak Alam , Selangor DarulEhsan , Malaysia.,b 2 Pharmacology Division, ISF College of Pharmacy , Moga , India.,c 3 Brain Degeneration and Therapeutics Group, Pharmaceutical & Life Sciences, Community of Research (CoRe), UniversitiTeknologi MARA (UiTM) , Shah Alam , Selangor Darul Ehsan , Malaysia
| | | | - Puneet Kumar
- b 2 Pharmacology Division, ISF College of Pharmacy , Moga , India
| | - Abu Bakar Abdul Majeed
- a 1 Faculty of Pharmacy , UniversitiTeknologi MARA (UiTM) , Puncak Alam , Selangor DarulEhsan , Malaysia.,c 3 Brain Degeneration and Therapeutics Group, Pharmaceutical & Life Sciences, Community of Research (CoRe), UniversitiTeknologi MARA (UiTM) , Shah Alam , Selangor Darul Ehsan , Malaysia
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Eid R, Boucher E, Gharib N, Khoury C, Arab NTT, Murray A, Young PG, Mandato CA, Greenwood MT. Identification of human ferritin, heavy polypeptide 1 (FTH1) and yeast RGI1 (YER067W) as pro-survival sequences that counteract the effects of Bax and copper in Saccharomyces cerevisiae. Exp Cell Res 2016; 342:52-61. [PMID: 26886577 DOI: 10.1016/j.yexcr.2016.02.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/09/2016] [Accepted: 02/12/2016] [Indexed: 02/06/2023]
Abstract
Ferritin is a sub-family of iron binding proteins that form multi-subunit nanotype iron storage structures and prevent oxidative stress induced apoptosis. Here we describe the identification and characterization of human ferritin, heavy polypeptide 1 (FTH1) as a suppressor of the pro-apoptotic murine Bax sequence in yeast. In addition we demonstrate that FTH1 is a general pro-survival sequence since it also prevents the cell death inducing effects of copper when heterologously expressed in yeast. Although ferritins are phylogenetically widely distributed and are present in most species of Bacteria, Archaea and Eukarya, ferritin is conspicuously absent in most fungal species including Saccharomyces cerevisiae. An in silico analysis of the yeast proteome lead to the identification of the 161 residue RGI1 (YER067W) encoded protein as a candidate for being a yeast ferritin. In addition to sharing 20% sequence identity with the 183 residue FTH1, RGI1 also has similar pro-survival properties as ferritin when overexpressed in yeast. Analysis of recombinant protein by SDS-PAGE and by electron microscopy revealed the expected formation of higher-order structures for FTH1 that was not observed with Rgi1p. Further analysis revealed that cells overexpressing RGI1 do not show increased resistance to iron toxicity and do not have enhanced capacity to store iron. In contrast, cells lacking RGI1 were found to be hypersensitive to the toxic effects of iron. Overall, our results suggest that Rgi1p is a novel pro-survival protein whose function is not related to ferritin but nevertheless it may have a role in regulating yeast sensitivity to iron stress.
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Affiliation(s)
- Rawan Eid
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada; Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Eric Boucher
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Nada Gharib
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada
| | - Chamel Khoury
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada; Department of Biology, Queen's University, Kingston, Ontario, Canada; Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Nagla T T Arab
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada; Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Alistair Murray
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Paul G Young
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - Craig A Mandato
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Michael T Greenwood
- Department of Chemistry and Chemical Engineering, Royal Military College, Kingston, Ontario, Canada.
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Mesquita VA, Silva CF, Soares EV. Toxicity Induced by a Metal Mixture (Cd, Pb and Zn) in the Yeast Pichia kudriavzevii: The Role of Oxidative Stress. Curr Microbiol 2016; 72:545-50. [DOI: 10.1007/s00284-016-0987-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 12/11/2015] [Indexed: 11/28/2022]
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Mallela SK, Almeida R, Ejsing CS, Conzelmann A. Functions of Ceramide Synthase Paralogs YPR114w and YJR116w of Saccharomyces cerevisiae. PLoS One 2016; 11:e0145831. [PMID: 26752183 PMCID: PMC4713442 DOI: 10.1371/journal.pone.0145831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 11/04/2015] [Indexed: 12/22/2022] Open
Abstract
Ceramide is synthesized in yeast by two redundant acyl-CoA dependent synthases, Lag1 and Lac1. In lag1∆ lac1∆ cells, free fatty acids and sphingoid bases are elevated, and ceramides are produced through the redundant alkaline ceramidases Ypc1 and Ydc1, working backwards. Even with all four of these genes deleted, cells are surviving and continue to contain small amounts of complex sphingolipids. Here we show that these residual sphingolipids are not synthesized by YPR114w or YJR116w, proteins of unknown function showing a high degree of homology to Lag1 and Lac1. Indeed, the hextuple lag1∆ lac1∆ ypc1∆ ydc1∆ ypr114w∆ yjr116w∆ mutant still contains ceramides and complex sphingolipids. Yjr116w∆ exhibit an oxygen-dependent hypersensitivity to Cu2+ due to an increased mitochondrial production of reactive oxygen species (ROS) and a mitochondrially orchestrated programmed cell death in presence of copper, but also a general copper hypersensitivity that cannot be counteracted by the antioxidant N-acetyl-cysteine (NAC). Myriocin efficiently represses the synthesis of sphingoid bases of ypr114w∆, but not its growth. Both yjr116w∆ and ypr114w∆ have fragmented vacuoles and produce less ROS than wild type, before and after diauxic shift. Ypr114w∆/ypr114w∆ have an increased chronological life span. Thus, Yjr116w and Ypr114w are related, but not functionally redundant.
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Affiliation(s)
- Shamroop K. Mallela
- Division of Biochemistry, Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg, CH-1700, Switzerland
| | - Reinaldo Almeida
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark
| | - Christer S. Ejsing
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark
| | - Andreas Conzelmann
- Division of Biochemistry, Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg, CH-1700, Switzerland
- * E-mail:
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Radin I, Mansilla N, Rödel G, Steinebrunner I. The Arabidopsis COX11 Homolog is Essential for Cytochrome c Oxidase Activity. FRONTIERS IN PLANT SCIENCE 2015; 6:1091. [PMID: 26734017 PMCID: PMC4683207 DOI: 10.3389/fpls.2015.01091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/20/2015] [Indexed: 05/19/2023]
Abstract
Members of the ubiquitous COX11 (cytochrome c oxidase 11) protein family are involved in copper delivery to the COX complex. In this work, we characterize the Arabidopsis thaliana COX11 homolog (encoded by locus At1g02410). Western blot analyses and confocal microscopy identified Arabidopsis COX11 as an integral mitochondrial protein. Despite sharing high sequence and structural similarities, the Arabidopsis COX11 is not able to functionally replace the Saccharomyces cerevisiae COX11 homolog. Nevertheless, further analysis confirmed the hypothesis that Arabidopsis COX11 is essential for COX activity. Disturbance of COX11 expression through knockdown (KD) or overexpression (OE) affected COX activity. In KD lines, the activity was reduced by ~50%, resulting in root growth inhibition, smaller rosettes and leaf curling. In OE lines, the reduction was less pronounced (~80% of the wild type), still resulting in root growth inhibition. Additionally, pollen germination was impaired in COX11 KD and OE plants. This effect on pollen germination can only partially be attributed to COX deficiency and may indicate a possible auxiliary role of COX11 in ROS metabolism. In agreement with its role in energy production, the COX11 promoter is highly active in cells and tissues with high-energy demand for example shoot and root meristems, or vascular tissues of source and sink organs. In COX11 KD lines, the expression of the plasma-membrane copper transporter COPT2 and of several copper chaperones was altered, indicative of a retrograde signaling pathway pertinent to copper homeostasis. Based on our data, we postulate that COX11 is a mitochondrial chaperone, which plays an important role for plant growth and pollen germination as an essential COX complex assembly factor.
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Affiliation(s)
- Ivan Radin
- Institute for Genetics, Department of Biology, Technische Universität DresdenDresden, Germany
| | - Natanael Mansilla
- Instituto de Agrobiotecnología del Litoral-Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del LitoralSanta Fe, Argentina
| | - Gerhard Rödel
- Institute for Genetics, Department of Biology, Technische Universität DresdenDresden, Germany
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Sheibani S, Jones NK, Eid R, Gharib N, Arab NTT, Titorenko V, Vali H, Young PA, Greenwood MT. Inhibition of stress mediated cell death by human lactate dehydrogenase B in yeast. FEMS Yeast Res 2015; 15:fov032. [DOI: 10.1093/femsyr/fov032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 05/19/2015] [Indexed: 12/11/2022] Open
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Spincemaille P, Chandhok G, Zibert A, Schmidt H, Verbeek J, Chaltin P, Cammue BP, Cassiman D, Thevissen K. Angiotensin II type 1 receptor blockers increase tolerance of cells to copper and cisplatin. MICROBIAL CELL 2014; 1:352-364. [PMID: 28357214 PMCID: PMC5349125 DOI: 10.15698/mic2014.11.175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The human pathology Wilson disease (WD) is characterized by toxic copper (Cu)
accumulation in brain and liver, resulting in, among other indications,
mitochondrial dysfunction and apoptosis of hepatocytes. In an effort to identify
novel compounds that can alleviate Cu-induced toxicity, we screened the
Pharmakon 1600 repositioning library using a Cu-toxicity yeast screen. We
identified 2 members of the drug class of Angiotensin II Type 1 receptor
blockers (ARBs) that could increase yeast tolerance to Cu, namely Candesartan
and Losartan. Subsequently, we show that specific ARBs can increase yeast
tolerance to Cu and/or the chemotherapeutic agent cisplatin (Cp). The latter
also induces mitochondrial dysfunction and apoptosis in mammalian cells. We
further demonstrate that specific ARBs can prevent the prevalence of Cu-induced
apoptotic markers in yeast, with Candesartan Cilexetil being the ARB which
demonstrated most pronounced reduction of apoptosis-related markers. Next, we
tested the sensitivity of a selection of yeast knockout mutants affected in
detoxification of reactive oxygen species (ROS) and Cu for Candesartan Cilexetil
rescue in presence of Cu. These data indicate that Candesartan Cilexetil
increases yeast tolerance to Cu irrespectively of major ROS-detoxifying
proteins. Finally, we show that specific ARBs can increase mammalian cell
tolerance to Cu, as well as decrease the prevalence of Cu-induced apoptotic
markers. All the above point to the potential of ARBs in preventing Cu-induced
toxicity in yeast and mammalian cells.
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Affiliation(s)
- Pieter Spincemaille
- Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium
| | - Gursimran Chandhok
- Clinic for Transplantation Medicine, Münster University Hospital, Albert-Schweitzer-Campus 1, Building A14, D-48149 Münster, Germany
| | - Andree Zibert
- Clinic for Transplantation Medicine, Münster University Hospital, Albert-Schweitzer-Campus 1, Building A14, D-48149 Münster, Germany
| | - Hartmut Schmidt
- Clinic for Transplantation Medicine, Münster University Hospital, Albert-Schweitzer-Campus 1, Building A14, D-48149 Münster, Germany
| | - Jef Verbeek
- Department of Hepatology and Metabolic Center, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - Patrick Chaltin
- CISTIM Leuven vzw, Bio-Incubator 2, Wetenschapspark Arenberg, Gaston Geenslaan 2, 3001 Heverlee, Belgium. ; Centre for Drug Design and Discovery (CD3), KU Leuven R&D, Waaistraat 6, Box 5105, 3000 Leuven
| | - Bruno P Cammue
- Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium. ; Department of Plant Systems Biology, VIB, Technologiepark 927, 9052, Ghent, Belgium
| | - David Cassiman
- Department of Hepatology and Metabolic Center, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - Karin Thevissen
- Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium
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Ilyas S, Rehman A, Varela AC, Sheehan D. Redox proteomics changes in the fungal pathogen Trichosporon asahii on arsenic exposure: identification of protein responses to metal-induced oxidative stress in an environmentally-sampled isolate. PLoS One 2014; 9:e102340. [PMID: 25062082 PMCID: PMC4111368 DOI: 10.1371/journal.pone.0102340] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 06/18/2014] [Indexed: 01/25/2023] Open
Abstract
Trichosporon asahii is a yeast pathogen implicated in opportunistic infections. Cultures of an isolate collected from industrial wastewater were exposed for 2 days to 100 mg/L sodium arsenite (NaAsO2) and cadmium (CdCl2). Both metals reduced glutathione transferase (GST) activity but had no effect on superoxide dismutase or catalase. NaAsO2 exposure increased glutathione reductase activity while CdCl2 had no effect. Protein thiols were labeled with 5-iodoacetamido fluorescein followed by one dimensional electrophoresis which revealed extensive protein thiol oxidation in response to CdCl2 treatment but thiol reduction in response to NaAsO2. Two dimensional electrophoresis analyses showed that the intensity of some protein spots was enhanced on treatment as judged by SameSpots image analysis software. In addition, some spots showed decreased IAF fluorescence suggesting thiol oxidation. Selected spots were excised and tryptic digested for identification by MALDI-TOF/TOF MS. Twenty unique T. asahii proteins were identified of which the following proteins were up-regulated in response to NaAsO2: 3-isopropylmalate dehydrogenase, phospholipase B, alanine-glyoxylate aminotransferase, ATP synthase alpha chain, 20S proteasome beta-type subunit Pre3p and the hypothetical proteins A1Q1_08001, A1Q2_03020, A1Q1_06950, A1Q1_06913. In addition, the following showed decreased thiol-associated fluorescence consistent with thiol oxidation; aconitase; aldehyde reductase I; phosphoglycerate kinase; translation elongation factor 2; heat shock protein 70 and hypothetical protein A1Q2_04745. Some proteins showed both increase in abundance coupled with decrease in IAF fluorescence; 3-hydroxyisobutyryl- CoA hydrolase; homoserine dehydrogenase Hom6 and hypothetical proteins A1Q2_03020 and A1Q1_00754. Targets implicated in redox response included 10 unique metabolic enzymes, heat shock proteins, a component of the 20S proteasome and translation elongation factor 2. These data suggest extensive proteomic alterations in response to metal-induced oxidative stress in T. asahii. Amino acid metabolism, protein folding and degradation are principally affected.
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Affiliation(s)
- Sidra Ilyas
- Dept. Of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Abdul Rehman
- Dept. Of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Ana Coelho Varela
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal
| | - David Sheehan
- Environmental Research Institute and School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
- * E-mail:
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50
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Facile and quantitative electrochemical detection of yeast cell apoptosis. Sci Rep 2014; 4:4373. [PMID: 24625374 PMCID: PMC3953722 DOI: 10.1038/srep04373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 02/24/2014] [Indexed: 01/18/2023] Open
Abstract
An electrochemical method based on square wave anodic stripping voltammetry (SWASV) was developed to detect the apoptosis of yeast cells conveniently and quantitatively through the high affinity between Cu2+ and phosphatidylserine (PS) translocated from the inner to the outer plasma membrane of the apoptotic cells. The combination of negatively charged PS and Cu2+ could decrease the electrochemical response of Cu2+ on the electrode. The results showed that the apoptotic rates of cells could be detected quantitatively through the variations of peak currents of Cu2+ by SWASV, and agreed well with those obtained through traditional flow cytometry detection. This work thus may provide a novel, simple, immediate and accurate detection method for cell apoptosis.
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