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Jawich D, Pfohl-Leszkowicz A, Lteif R, Strehaiano P. DNA adduct formation in Saccharomyces cerevisiae following exposure to environmental pollutants, as in vivo model for molecular toxicity studies. World J Microbiol Biotechnol 2024; 40:180. [PMID: 38668960 DOI: 10.1007/s11274-024-03989-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 04/15/2024] [Indexed: 05/18/2024]
Abstract
DNA adduction in the model yeast Saccharomyces cerevisiae was investigated after exposure to the fungicide penconazole and the reference genotoxic compound benzo(a)pyrene, for validating yeasts as a tool for molecular toxicity studies, particularly of environmental pollution. The effect of the toxicants on the yeast's growth kinetics was determined as an indicator of cytotoxicity. Fermentative cultures of S. cerevisiae were exposed to 2 ppm of Penconazole during different phases of growth; while 0.2 and 2 ppm of benzo(a)pyrene were applied to the culture medium before inoculation and on exponential cultures. Exponential respiratory cultures were also exposed to 0.2 ppm of B(a)P for comparison of both metabolisms. Penconazole induced DNA adducts formation in the exponential phase test; DNA adducts showed a peak of 54.93 adducts/109 nucleotides. Benzo(a)pyrene induced the formation of DNA adducts in all the tests carried out; the highest amount of 46.7 adducts/109 nucleotides was obtained in the fermentative cultures after the exponential phase exposure to 0.2 ppm; whereas in the respiratory cultures, 14.6 adducts/109 nucleotides were detected. No cytotoxicity was obtained in any experiment. Our study showed that yeast could be used to analyse DNA adducts as biomarkers of exposure to environmental toxicants.
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Affiliation(s)
- Dalal Jawich
- Fanar Laboratory, Lebanese Agricultural Research Institute (LARI), Beirut, Lebanon.
- Laboratoire de Génie Chimique, UMR-CNRS/INPT/UPS 5503, Département Bioprocédé-Système Microbien, Toulouse Cedex, France.
- Unité de Technologie et Valorisation Alimentaire, Faculté Des Sciences, Centre d'Analyses et de Recherche, Université Saint-Joseph de Beyrouth, Campus des Sciences et Technologies, Mar Roukos, Dekwaneh, B.P. 17-5208, Mar Mikhaël, Beirut, 1104 2020, Lebanon.
- Faculty of Agricultural Sciences, Department of Basic Sciences, Lebanese University, Dekwaneh, Beirut, Lebanon.
| | - Annie Pfohl-Leszkowicz
- Laboratoire de Génie Chimique, UMR-CNRS/INPT/UPS 5503, Département Bioprocédé-Système Microbien, Toulouse Cedex, France
| | - Roger Lteif
- Unité de Technologie et Valorisation Alimentaire, Faculté Des Sciences, Centre d'Analyses et de Recherche, Université Saint-Joseph de Beyrouth, Campus des Sciences et Technologies, Mar Roukos, Dekwaneh, B.P. 17-5208, Mar Mikhaël, Beirut, 1104 2020, Lebanon
| | - Pierre Strehaiano
- Laboratoire de Génie Chimique, UMR-CNRS/INPT/UPS 5503, Département Bioprocédé-Système Microbien, Toulouse Cedex, France
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Scanning electrochemical microscope as a tool for the electroporation of living yeast cells. Biosens Bioelectron 2022; 205:114096. [PMID: 35219018 DOI: 10.1016/j.bios.2022.114096] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/08/2022] [Accepted: 02/11/2022] [Indexed: 12/31/2022]
Abstract
In this study, a scanning electrochemical microscope (SECM) was for the first time adapted to perform the electroporation process of living yeast cells. We have demonstrated that relatively low voltage pulses of 1-2 V vs. Ag/AglCl,Cl-sat applied to gold-based ultramicroelectrode (Au-UME) are performing reversible electroporation of yeast cells immobilized on fluorine-doped tin oxide (FTO)/glass surface. SECM and electrochemical impedance spectroscopy (EIS) were used for the determination of quantitative electrochemical characteristics before and after the electroporation. The electrochemical impedance spectroscopy (EIS) illustrated significant electrochemical changes of electroporated yeast cells, while SECM feedback mode surface vertical scan current-distance curves showed that the diameter of the area affected by the electrical pulse is about 25 times larger than the diameter of the Au-UME used for the electroporation process. The results presented in this research open up a possibility to develop a targeted electroporation system which will affect only the selected area of tissue or some other cell-covered surface. Such model is promising for the selective treatment of selected cells in tissues and/or other sensitive biological systems while selecting the location and size of electroporated areas.
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Chi BB, Lu YN, Yin PC, Liu HY, Chen HY, Shan Y. Sequencing and Comparative Genomic Analysis of a Highly Metal-Tolerant Penicillium janthinellum P1 Provide Insights Into Its Metal Tolerance. Front Microbiol 2021; 12:663217. [PMID: 34149650 PMCID: PMC8212970 DOI: 10.3389/fmicb.2021.663217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/14/2021] [Indexed: 12/13/2022] Open
Abstract
Heavy metal pollution is a global knotty problem and fungi hold promising potential for the remediation of wastewater containing heavy metals. Here, a new highly chromium-tolerance species, Penicillium janthinellum P1, is investigated. The genome of P1 was sequenced and assembled into 30 Mb genome size containing 10,955 predicted protein-coding genes with a GC content of 46.16% through an integrated method of Illumina short-read sequencing and single-molecule real-time Pacific Biosciences sequencing platforms. Through a phylogenetic analysis with model species of fungi, the evolutionary divergence time of Penicillium janthinellum P1 and Penicillium oxalicum 114-2 was estimated to be 74 MYA. 33 secondary metabolism gene clusters were identified via antiSMASH software, mainly including non-ribosomal peptide synthase genes and T1 polyketide synthase genes. 525 genes were annotated to encode enzymes that act on carbohydrates, involving 101 glucose-degrading enzymes and 24 polysaccharide synthase. By whole-genome sequence analysis, large numbers of metal resistance genes were found in strain P1. Especially ABC transporter and Superoxide dismutase ensure that the P1 fungus can survive in a chromium-polluted environment. ChrA and ChrR were also identified as key genes for chromium resistance. Analysis of their genetic loci revealed that the specific coding-gene arrangement may account for the fungus’s chromium resistance. Genetic information and comparative analysis of Penicillium janthinellum are valuable for further understanding the mechanism of high resistance to heavy metal chromium, and gene loci analysis provides a new perspective for identifying chromium-resistant strains.
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Affiliation(s)
- Bin-Bin Chi
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China.,Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Ya-Nan Lu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China.,Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Ping-Chuan Yin
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China.,Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Hong-Yan Liu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China.,Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Hui-Ying Chen
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China.,Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, China
| | - Yang Shan
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha, China
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Rogov AG, Goleva TN, Epremyan KK, Kireev II, Zvyagilskaya RA. Propagation of Mitochondria-Derived Reactive Oxygen Species within the Dipodascus magnusii Cells. Antioxidants (Basel) 2021; 10:antiox10010120. [PMID: 33467672 PMCID: PMC7830518 DOI: 10.3390/antiox10010120] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/04/2022] Open
Abstract
Mitochondria are considered to be the main source of reactive oxygen species (ROS) in the cell. It was shown that in cardiac myocytes exposed to excessive oxidative stress, ROS-induced ROS release is triggered. However, cardiac myocytes have a network of densely packed organelles that do not move, which is not typical for the majority of eukaryotic cells. The purpose of this study was to trace the spatiotemporal development (propagation) of prooxidant-induced oxidative stress and its interplay with mitochondrial dynamics. We used Dipodascus magnusii yeast cells as a model, as they have advantages over other models, including a uniquely large size, mitochondria that are easy to visualize and freely moving, an ability to vigorously grow on well-defined low-cost substrates, and high responsibility. It was shown that prooxidant-induced oxidative stress was initiated in mitochondria, far preceding the appearance of generalized oxidative stress in the whole cell. For yeasts, these findings were obtained for the first time. Preincubation of yeast cells with SkQ1, a mitochondria-addressed antioxidant, substantially diminished production of mitochondrial ROS, while only slightly alleviating the generalized oxidative stress. This was expected, but had not yet been shown. Importantly, mitochondrial fragmentation was found to be primarily induced by mitochondrial ROS preceding the generalized oxidative stress development.
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Affiliation(s)
- Anton G. Rogov
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Tatiana N. Goleva
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Khoren K. Epremyan
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Igor I. Kireev
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Vorobyevy Gory 1, Moscow 119992, Russia;
| | - Renata A. Zvyagilskaya
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
- Correspondence:
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Yeast model identifies ENTPD6 as a potential non-obstructive azoospermia pathogenic gene. Sci Rep 2015; 5:11762. [PMID: 26152596 PMCID: PMC4495445 DOI: 10.1038/srep11762] [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: 03/09/2015] [Accepted: 06/02/2015] [Indexed: 01/03/2023] Open
Abstract
Approximately ten percent of male infertility is caused by non-obstructive azoospermia (NOA), but the etiologies of many NOA remain elusive. Recently, a genome-wide association study (GWAS) of NOA in Han Chinese men was conducted, and only a few genetic variants associated with NOA were found, which might have resulted from genetic heterogeneity. However, those variants that lack genome-wide significance might still be essential for fertility. Functional analysis of genes surrounding these variants inDrosophilaidentified some spermatogenesis-essential genes. As a complementary method ofDrosophilascreening, SK1 backgroundSaccharomvces cerevisiaewas used as a model to screen meiosis-related genes from the NOA GWAS data in this study. After functional screening,GDA1(orthologous to humanENTPD6) was found to be a novel meiosis-related gene. The deletion ofGDA1resulted in the failure of yeast sporulation. Further investigations showed that Gda1p was important for pre-meiotic S phase entry. Interestingly, the meiotic role of Gda1p was dependent on its guanosine diphosphatase activity, but not it’s cytoplasmic, transmembrane or stem domains. These yeast data suggest thatENTPD6may be a novel meiosis-associated NOA-related gene, and the yeast model provides a good approach to analyze GWAS results of NOA.
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Fernandes JTS, Tenreiro S, Gameiro A, Chu V, Outeiro TF, Conde JP. Modulation of alpha-synuclein toxicity in yeast using a novel microfluidic-based gradient generator. LAB ON A CHIP 2014; 14:3949-3957. [PMID: 25167219 DOI: 10.1039/c4lc00756e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Parkinson's disease (PD) is a common age-associated neurodegenerative disorder. The protein α-synuclein (aSyn) is a key factor in PD both due to its association with familial and sporadic cases and because it is the main component of the pathological protein aggregates known as Lewy bodies. However, the precise cellular effects of aSyn aggregation are still elusive. Here, we developed an elastomeric microfluidic device equipped with a chemical gradient generator and 9 chambers containing cell traps to study aSyn production and aggregation in Saccharomyces cerevisiae. This study involved capturing single cells, exposing them to specific chemical environments and imaging the expression of aSyn by means of a GFP fusion (aSyn-GFP). Using a galactose (GAL) gradient we modulated aSyn expression and, surprisingly, by tracking the behavior of single cells, we found that the response of individual cells in a population to a given stimulus can differ widely. To study the combined effect of environmental factors and aSyn expression levels, we exposed cells to a gradient of FeCl3. We found a dramatic increase in the percentage of cells displaying aSyn inclusions from 27% to 96%. Finally, we studied the effects of ascorbic acid, an antioxidant, on aSyn aggregation and found a significant reduction in the percentage of cells bearing aSyn inclusions from 87% to 37%. In summary, the device developed here offers a powerful way of studying aSyn biology with single-cell resolution and high throughput using genetically modified yeast cells.
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Affiliation(s)
- João Tiago S Fernandes
- INESC Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, R. Alves Redol, 9, 1000-029, Lisbon, Portugal
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Mattiazzi Ušaj M, Kaferle P, Toplak A, Trebše P, Petrovič U. Determination of toxicity of neonicotinoids on the genome level using chemogenomics in yeast. CHEMOSPHERE 2014; 104:91-96. [PMID: 24262822 DOI: 10.1016/j.chemosphere.2013.10.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 10/14/2013] [Accepted: 10/16/2013] [Indexed: 06/02/2023]
Abstract
Neonicotinoid insecticides are an important contribution to plant protection products. At the same time, their environmental impact on non-target organisms is often problematic. It has been shown that the toxicity of formulations of neonicotinoid insecticides can originate from non-neonicotinoid additives. In the present study we used chemogenomics to analyse side effects of purified neonicotinoids, additives and formulations on the genome-wide scale. We show that the additives in formulations have more pronounced effects than the active components, and that these effects could explain previously observed negative effects of neonicotinoid insecticides on spermatogenesis in animals. We also demonstrate that cell wall organization and biogenesis in yeast is negatively affected by neonicotinoid substances.
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Affiliation(s)
- Mojca Mattiazzi Ušaj
- Department of Molecular and Biomedical Sciences, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Petra Kaferle
- Department of Molecular and Biomedical Sciences, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Alenka Toplak
- Department of Molecular and Biomedical Sciences, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; Laboratory for Environmental Research, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
| | - Polonca Trebše
- Laboratory for Environmental Research, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia.
| | - Uroš Petrovič
- Department of Molecular and Biomedical Sciences, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
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Yarimizu T, Nonklang S, Nakamura J, Tokuda S, Nakagawa T, Lorreungsil S, Sutthikhumpha S, Pukahuta C, Kitagawa T, Nakamura M, Cha-aim K, Limtong S, Hoshida H, Akada R. Identification of auxotrophic mutants of the yeastKluyveromyces marxianusby non-homologous end joining-mediated integrative transformation with genes fromSaccharomyces cerevisiae. Yeast 2013; 30:485-500. [DOI: 10.1002/yea.2985] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/11/2013] [Accepted: 10/14/2013] [Indexed: 12/23/2022] Open
Affiliation(s)
- Tohru Yarimizu
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Sanom Nonklang
- Department of Biological Science, Faculty of Science; Ubonratchathani University; Warinchumrap Ubonratchathani Thailand
| | - Junpei Nakamura
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Shuya Tokuda
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Takaaki Nakagawa
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Sasithorn Lorreungsil
- Department of Biological Science, Faculty of Science; Ubonratchathani University; Warinchumrap Ubonratchathani Thailand
| | - Surasit Sutthikhumpha
- Department of Biological Science, Faculty of Science; Ubonratchathani University; Warinchumrap Ubonratchathani Thailand
| | - Charida Pukahuta
- Department of Biological Science, Faculty of Science; Ubonratchathani University; Warinchumrap Ubonratchathani Thailand
| | - Takao Kitagawa
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Mikiko Nakamura
- Innovation Center; Yamaguchi University; Tokiwadai Ube Japan
| | - Kamonchai Cha-aim
- Faculty of Agricultural Product Innovation and Technology; Srinakharinwirot University; Wattana Bangkok Thailand
| | - Savitree Limtong
- Department of Microbiology, Faculty of Science; Kasetsart University; Bangkok Thailand
| | - Hisashi Hoshida
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
| | - Rinji Akada
- Department of Applied Molecular Bioscience, Graduate School of Medicine; Yamaguchi University; Tokiwadai Ube Japan
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