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Gan Y, Tu Z, Yang Y, Cheng L, Wang N, Fan S, Wu C. Enhancing cowpea wilt resistance: insights from gene coexpression network analysis with exogenous melatonin treatment. BMC PLANT BIOLOGY 2024; 24:599. [PMID: 38918732 PMCID: PMC11197195 DOI: 10.1186/s12870-024-05289-w] [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: 02/15/2024] [Accepted: 06/12/2024] [Indexed: 06/27/2024]
Abstract
BACKGROUND Cowpea wilt is a harmful disease caused by Fusarium oxysporum, leading to substantial losses in cowpea production. Melatonin reportedly regulates plant immunity to pathogens; however the specific regulatory mechanism underlying the protective effect of melatonin pretreated of cowpea against Fusarium oxysporum remains known. Accordingly, the study sought to evaluate changes in the physiological and biochemical indices of cowpea following melatonin treated to facilitate Fusarium oxysporum resistance and elucidate the associated molecular mechanism using a weighted gene coexpression network. RESULTS Treatment with 100 µM melatonin was effective in increasing cowpea resistance to Fusarium oxysporum. Glutathione peroxidase (GSH-PX), catalase (CAT), and salicylic acid (SA) levels were significantly upregulated, and hydrogen peroxide (H2O2) levels were significantly downregulated in melatonin treated samples in roots. Weighted gene coexpression network analysis of melatonin- and Fusarium oxysporum-treated samples identified six expression modules comprising 2266 genes; the number of genes per module ranged from 9 to 895. In particular, 17 redox genes and 32 transcription factors within the blue module formed a complex interconnected expression network. KEGG analysis revealed that the associated pathways were enriched in secondary metabolism, peroxisomes, phenylalanine metabolism, flavonoids, and flavonol biosynthesis. More specifically, genes involved in lignin synthesis, catalase, superoxide dismutase, and peroxidase were upregulated. Additionally, exogenous melatonin induced activation of transcription factors, such as WRKY and MYB. CONCLUSIONS The study elucidated changes in the expression of genes associated with the response of cowpea to Fusarium oxysporum under melatonin treated. Specifically, multiple defence mechanisms were initiated to improve cowpea resistance to Fusarium oxysporum.
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Affiliation(s)
- Yudi Gan
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Zhiwei Tu
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Youxin Yang
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Liuyang Cheng
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Nan Wang
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Shuying Fan
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Caijun Wu
- College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
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2
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Pradhan SS, Rao KR, Manjunath M, Saiswaroop R, Patnana DP, Phalguna KS, Choudhary B, Sivaramakrishnan V. Vitamin B 6, B 12 and folate modulate deregulated pathways and protein aggregation in yeast model of Huntington disease. 3 Biotech 2023; 13:96. [PMID: 36852176 PMCID: PMC9958225 DOI: 10.1007/s13205-023-03525-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/13/2023] [Indexed: 03/01/2023] Open
Abstract
Huntington's disease (HD) is an incurable and progressive neurodegenerative disease affecting the basal ganglia of the brain. HD is caused due to expansion of the polyglutamine tract in the protein Huntingtin resulting in aggregates. The increased PolyQ length results in aggregation of protein Huntingtin leading to neuronal cell death. Vitamin B6, B12 and folate are deficient in many neurodegenerative diseases. We performed an integrated analysis of transcriptomic, metabolomic and cofactor-protein network of vitamin B6, B12 and folate was performed. Our results show considerable overlap of pathways modulated by Vitamin B6, B12 and folate with those obtained from transcriptomic and metabolomic data of HD patients and model systems. Further, in yeast model of HD we showed treatment of B6, B12 or folate either alone or in combination showed impaired aggregate formation. Transcriptomic analysis of yeast model treated with B6, B12 and folate showed upregulation of pathways like ubiquitin mediated proteolysis, autophagy, peroxisome, fatty acid, lipid and nitrogen metabolism. Metabolomic analysis of yeast model shows deregulation of pathways like aminoacyl-tRNA biosynthesis, metabolism of various amino acids, nitrogen metabolism and glutathione metabolism. Integrated transcriptomic and metabolomic analysis of yeast model showed concordance in the pathways obtained. Knockout of Peroxisomal (PXP1 and PEX7) and Autophagy (ATG5) genes in yeast increased aggregates which is mitigated by vitamin B6, B12 and folate treatment. Taken together our results show a role for Vitamin B6, B12 and folate mediated modulation of pathways important for preventing protein aggregation with potential implications for HD. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03525-y.
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Affiliation(s)
- Sai Sanwid Pradhan
- Disease Biology Lab, Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh 515134 India
| | - K. Raksha Rao
- Institute of Bioinformatics and Applied Biotechnology, Bangalore, Karnataka 560100 India
| | - Meghana Manjunath
- Institute of Bioinformatics and Applied Biotechnology, Bangalore, Karnataka 560100 India
| | - R. Saiswaroop
- Disease Biology Lab, Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh 515134 India
| | - Durga Prasad Patnana
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh 515134 India
| | - Kanikaram Sai Phalguna
- Disease Biology Lab, Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh 515134 India
| | - Bibha Choudhary
- Institute of Bioinformatics and Applied Biotechnology, Bangalore, Karnataka 560100 India
| | - Venketesh Sivaramakrishnan
- Disease Biology Lab, Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, Andhra Pradesh 515134 India
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Sun P, Ma Q, Zhang L. Comprehensive acetyl-proteomic analysis of Cytospora mali provides insight into its response to the biocontrol agent Bacillus velezensis L-1. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.999510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cytospora mali is an important factor for apple valsa canker, and Bacillus veleznesis L-1 is an effective biocontrol agent against apple valsa canker. Quantitative acetyl-proteomics is known to regulate transcriptional activity in different organisms; limited knowledge is available for acetylation modification in C. mali, and its response to biocontrol agents. In this study, using Tandem Mass tag proteomic strategies, we identified 733 modification sites on 416 proteins in C. mali, functions of these proteins were analyzed using GO enrichment and KEGG pathway. Some lysine acetylated proteins are found to be important to the fungal pathogenicity of C. mali, and also the response of fungi to biostress. B. velezensis L-1 suppressed the C. mali QH2 by causing the energy shortage and reduced virulence. Correspondingly, the C. mali QH2 could alleviate the suppression of biostress by upregulation of autophagy, peroxidase, cytochrome P450, ABC transporter and Heat shock protein 70. In summary, our results provided the first lysine acetylome of C. mali and its response to B. velezensis L-1.
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Cai H, Doi R, Shimada M, Hayakawa T, Nakagawa T. Metabolic regulation adapting to high methanol environment in the methylotrophic yeast Ogataea methanolica. Microb Biotechnol 2021; 14:1512-1524. [PMID: 33939325 PMCID: PMC8313246 DOI: 10.1111/1751-7915.13811] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 11/28/2022] Open
Abstract
Since methylotrophic yeasts such as Ogataea methanolica can use methanol as a sole carbon feedstock, they could be applied to produce valuable products from methanol, a next-generation energy source synthesized from natural gases, using genetic engineering tools. In this study, metabolite profiling of O. methanolica was conducted under glucose (Glc) and low and high methanol (L- and H-MeOH) conditions to show the adaptation mechanism to a H-MeOH environment. The yeast strain responded not only to the presence of methanol but also to its concentration based on the growth condition. Under H-MeOH conditions, O. methanolica downregulated the methanol utilization, glycolytic pathway and alcohol oxidase (AOD) isozymes and dihydroxyacetone synthase (DAS) expression compared with L-MeOH-grown cells. However, levels of energy carriers, such as ATP, were maintained to support cell survival. In H-MeOH-grown cells, reactive oxygen species (ROS) levels were significantly elevated. Along with increasing ROS levels, ROS scavenging system expression was significantly increased in H-MeOH-grown cells. Thus, we concluded that formaldehyde and H2 O2 , which are products of methanol oxidation by AOD isozymes in the peroxisome, are overproduced in H-MeOH-grown cells, and excessive ROS derived from these cells is generated in the cytosol, resulting in upregulation of the antioxidant system and downregulation of the methanol-utilizing pathway to suppress overproduction of toxic intermediates.
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Affiliation(s)
- Hao‐Liang Cai
- The United Graduate School of Agricultural ScienceGifu University1‐1 YanagidoGifu501‐1193Japan
| | - Ryohei Doi
- The Graduate School of Natural Sciences and Technologies1‐1 YanagidoGifu501‐1193Japan
| | - Masaya Shimada
- The United Graduate School of Agricultural ScienceGifu University1‐1 YanagidoGifu501‐1193Japan
- The Graduate School of Natural Sciences and Technologies1‐1 YanagidoGifu501‐1193Japan
- The Faculty of Applied Biological Sciences1‐1 YanagidoGifu501‐1193Japan
| | - Takashi Hayakawa
- The United Graduate School of Agricultural ScienceGifu University1‐1 YanagidoGifu501‐1193Japan
- The Graduate School of Natural Sciences and Technologies1‐1 YanagidoGifu501‐1193Japan
- The Faculty of Applied Biological Sciences1‐1 YanagidoGifu501‐1193Japan
| | - Tomoyuki Nakagawa
- The United Graduate School of Agricultural ScienceGifu University1‐1 YanagidoGifu501‐1193Japan
- The Graduate School of Natural Sciences and Technologies1‐1 YanagidoGifu501‐1193Japan
- The Faculty of Applied Biological Sciences1‐1 YanagidoGifu501‐1193Japan
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5
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Yang X, Zhang L, Xiang Y, Du L, Huang X, Liu Y. Comparative transcriptome analysis of Sclerotinia sclerotiorum revealed its response mechanisms to the biological control agent, Bacillus amyloliquefaciens. Sci Rep 2020; 10:12576. [PMID: 32724140 PMCID: PMC7387486 DOI: 10.1038/s41598-020-69434-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 07/12/2020] [Indexed: 11/08/2022] Open
Abstract
Biological control mechanisms of plant diseases have been intensively studied. However, how plant pathogens respond to and resist or alleviate biocontrol agents remains largely unknown. In this study, a comparative transcriptome analysis was performed to elucidate how the pathogen of sclerotinia stem rot, Sclerotinia sclerotiorum, responds and resists to the biocontrol agent, Bacillus amyloliquefaciens. Results revealed that a total of 2,373 genes were differentially expressed in S. sclerotiorum samples treated with B. amyloliquefaciens fermentation broth (TS) when compared to control samples (CS). Among these genes, 2,017 were upregulated and 356 were downregulated. Further analyses indicated that various genes related to fungal cell wall and cell membrane synthesis, antioxidants, and the autophagy pathway were significantly upregulated, including glucan synthesis, ergosterol biosynthesis pathway, fatty acid synthase, heme-binding peroxidase related to oxidative stress, glutathione S-transferase, ABC transporter, and autophagy-related genes. These results suggest that S. sclerotiorum recruits numerous genes to respond to or resist the biocontrol of B. amyloliquefaciens. Thus, this study serves as a valuable resource regarding the mechanisms of fungal pathogen resistance to biocontrol agents.
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Affiliation(s)
- Xiaoxiang Yang
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China
- Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture and Rural Affairs, Chengdu, 610066, Sichuan, People's Republic of China
| | - Lei Zhang
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China
- Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture and Rural Affairs, Chengdu, 610066, Sichuan, People's Republic of China
| | - Yunjia Xiang
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China
| | - Lei Du
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China
| | - Xiaoqin Huang
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China.
- Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture and Rural Affairs, Chengdu, 610066, Sichuan, People's Republic of China.
| | - Yong Liu
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, People's Republic of China.
- Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture and Rural Affairs, Chengdu, 610066, Sichuan, People's Republic of China.
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6
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Zhu Z, Yang M, Bai Y, Ge F, Wang S. Antioxidant-related catalase CTA1 regulates development, aflatoxin biosynthesis, and virulence in pathogenic fungus Aspergillus flavus. Environ Microbiol 2020; 22:2792-2810. [PMID: 32250030 DOI: 10.1111/1462-2920.15011] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/17/2020] [Accepted: 03/31/2020] [Indexed: 11/29/2022]
Abstract
Reactive oxygen species (ROS) induce the synthesis of a myriad of secondary metabolites, including aflatoxins. It raises significant concern as it is a potent environmental contaminant. In Aspergillus flavus., antioxidant enzymes link ROS stress response with coordinated gene regulation of aflatoxin biosynthesis. In this study, we characterized the function of a core component of the antioxidant enzyme catalase (CTA1) of A. flavus. Firstly, we verified the presence of cta1 corresponding protein (CTA1) by Western blot analysis and mass-spectrometry based analysis. Then, the functional study revealed that the growth, sporulation and sclerotia formation significantly increased, while aflatoxins production and virulence were decreased in the cta1 deletion mutant as compared with the WT and complementary strains. Furthermore, the absence of the cta1 gene resulted in a significant rise in the intracellular ROS level, which in turn added to the oxidative stress level of cells. A further quantitative proteomics investigation hinted that in vivo, CTA1 might maintain the ROS level to facilitate the aflatoxin synthesis. All in all, the pleiotropic phenotype of A. flavus CTA1 deletion mutant revealed that the antioxidant system plays a crucial role in fungal development, aflatoxins biosynthesis and virulence.
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Affiliation(s)
- Zhuo Zhu
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Mingkun Yang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Youhuang Bai
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Feng Ge
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Shihua Wang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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7
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Zhang C, Ma Y, Miao H, Tang X, Xu B, Wu Q, Mu Y, Huang Z. Transcriptomic Analysis of Pichia pastoris ( Komagataella phaffii) GS115 During Heterologous Protein Production Using a High-Cell-Density Fed-Batch Cultivation Strategy. Front Microbiol 2020; 11:463. [PMID: 32265887 PMCID: PMC7098997 DOI: 10.3389/fmicb.2020.00463] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/04/2020] [Indexed: 12/27/2022] Open
Abstract
Pichia pastoris (Komagataella phaffii) is a methylotrophic yeast that is widely used in industry as a host system for heterologous protein expression. Heterologous gene expression is typically facilitated by strongly inducible promoters derived from methanol utilization genes or constitutive glycolytic promoters. However, protein production is usually accomplished by a fed-batch induction process, which is known to negatively affect cell physiology, resulting in limited protein yields and quality. To assess how yields of exogenous proteins can be increased and to further understand the physiological response of P. pastoris to the carbon conversion of glycerol and methanol, as well as the continuous induction of methanol, we analyzed recombinant protein production in a 10,000-L fed-batch culture. Furthermore, we investigated gene expression during the yeast cell culture phase, glycerol feed phase, glycerol-methanol mixture feed (GM) phase, and at different time points following methanol induction using RNA-Seq. We report that the addition of the GM phase may help to alleviate the adverse effects of methanol addition (alone) on P. pastoris cells. Secondly, enhanced upregulation of the mitogen-activated protein kinase (MAPK) signaling pathway was observed in P. pastoris following methanol induction. The MAPK signaling pathway may be related to P. pastoris cell growth and may regulate the alcohol oxidase1 (AOX1) promoter via regulatory factors activated by methanol-mediated stimulation. Thirdly, the unfolded protein response (UPR) and ER-associated degradation (ERAD) pathways were not significantly upregulated during the methanol induction period. These results imply that the presence of unfolded or misfolded phytase protein did not represent a serious problem in our study. Finally, the upregulation of the autophagy pathway during the methanol induction phase may be related to the degradation of damaged peroxisomes but not to the production of phytase. This work describes the metabolic characteristics of P. pastoris during heterologous protein production under high-cell-density fed-batch cultivation. We believe that the results of this study will aid further in-depth studies of P. pastoris heterologous protein expression, regulation, and secretory mechanisms.
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Affiliation(s)
- Chengbo Zhang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
| | - Yu Ma
- School of Life Sciences, Yunnan Normal University, Kunming, China
| | - Huabiao Miao
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
| | - Xianghua Tang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- School of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Yunnan Normal University, Kunming, China
- Key Laboratory of Enzyme Engineering, Yunnan Normal University, Kunming, China
| | - Bo Xu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- School of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Yunnan Normal University, Kunming, China
- Key Laboratory of Enzyme Engineering, Yunnan Normal University, Kunming, China
| | - Qian Wu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- School of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Yunnan Normal University, Kunming, China
- Key Laboratory of Enzyme Engineering, Yunnan Normal University, Kunming, China
| | - Yuelin Mu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- School of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Yunnan Normal University, Kunming, China
- Key Laboratory of Enzyme Engineering, Yunnan Normal University, Kunming, China
| | - Zunxi Huang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- School of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Yunnan Normal University, Kunming, China
- Key Laboratory of Enzyme Engineering, Yunnan Normal University, Kunming, China
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8
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Foyer CH, Baker A, Wright M, Sparkes IA, Mhamdi A, Schippers JHM, Van Breusegem F. On the move: redox-dependent protein relocation in plants. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:620-631. [PMID: 31421053 DOI: 10.1093/jxb/erz330] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/01/2019] [Indexed: 05/04/2023]
Abstract
Compartmentation of proteins and processes is a defining feature of eukaryotic cells. The growth and development of organisms is critically dependent on the accurate sorting of proteins within cells. The mechanisms by which cytosol-synthesized proteins are delivered to the membranes and membrane compartments have been extensively characterized. However, the protein complement of any given compartment is not precisely fixed and some proteins can move between compartments in response to metabolic or environmental triggers. The mechanisms and processes that mediate such relocation events are largely uncharacterized. Many proteins can in addition perform multiple functions, catalysing alternative reactions or performing structural, non-enzymatic functions. These alternative functions can be equally important functions in each cellular compartment. Such proteins are generally not dual-targeted proteins in the classic sense of having targeting sequences that direct de novo synthesized proteins to specific cellular locations. We propose that redox post-translational modifications (PTMs) can control the compartmentation of many such proteins, including antioxidant and/or redox-associated enzymes.
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Affiliation(s)
- Christine H Foyer
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, UK
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Alison Baker
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Centre for Plant Sciences, University of Leeds, Leeds, UK
| | - Megan Wright
- The Astbury Centre for Structural Biology, University of Leeds, Leeds, UK
- School of Chemistry, University of Leeds, Leeds, UK
| | - Imogen A Sparkes
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Amna Mhamdi
- VIB-UGent Center for Plant Systems Biology, Ghent University, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Jos H M Schippers
- Institute of Biology I, RWTH Aachen University, Aachen, Germany
- Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| | - Frank Van Breusegem
- VIB-UGent Center for Plant Systems Biology, Ghent University, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
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9
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Cell organelles and yeast longevity: an intertwined regulation. Curr Genet 2019; 66:15-41. [PMID: 31535186 DOI: 10.1007/s00294-019-01035-0] [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: 06/03/2019] [Revised: 09/12/2019] [Accepted: 09/12/2019] [Indexed: 12/16/2022]
Abstract
Organelles are dynamic structures of a eukaryotic cell that compartmentalize various essential functions and regulate optimum functioning. On the other hand, ageing is an inevitable phenomenon that leads to irreversible cellular damage and affects optimum functioning of cells. Recent research shows compelling evidence that connects organelle dysfunction to ageing-related diseases/disorders. Studies in several model systems including yeast have led to seminal contributions to the field of ageing in uncovering novel pathways, proteins and their functions, identification of pro- and anti-ageing factors and so on. In this review, we present a comprehensive overview of findings that highlight the role of organelles in ageing and ageing-associated functions/pathways in yeast.
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10
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Deori NM, Kale A, Maurya PK, Nagotu S. Peroxisomes: role in cellular ageing and age related disorders. Biogerontology 2018; 19:303-324. [PMID: 29968207 DOI: 10.1007/s10522-018-9761-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/27/2018] [Indexed: 12/12/2022]
Abstract
Peroxisomes are dynamic organelles essential for optimum functioning of a eukaryotic cell. Biogenesis of these organelles and the diverse functions performed by them have been extensively studied in the past decade. Their ability to perform functions depending on the cell type and growth conditions is unique and remarkable. Oxidation of fatty acids and reactive oxygen species metabolism are the two most important functions of these ubiquitous organelles. They are often referred to as both source and sink of reactive oxygen species in a cell. Recent research connects peroxisome dysfunction to fatal oxidative damage associated with ageing-related diseases/disorders. It is now widely accepted that mitochondria and peroxisomes are required to maintain oxidative balance in a cell. However, our understanding on the inter-dependence of these organelles to maintain cellular homeostasis of reactive oxygen species is still in its infancy. Herein, we summarize findings that highlight the role of peroxisomes in cellular reactive oxygen species metabolism, ageing and age-related disorders.
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Affiliation(s)
- Nayan M Deori
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Avinash Kale
- UM-DAE, Centre for Excellence in Basic Sciences, Health Centre, University of Mumbai, Mumbai, 400098, India
| | - Pawan K Maurya
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, Brazil
| | - Shirisha Nagotu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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11
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The first minutes in the life of a peroxisomal matrix protein. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1863:814-20. [PMID: 26408939 DOI: 10.1016/j.bbamcr.2015.09.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/18/2015] [Accepted: 09/21/2015] [Indexed: 01/30/2023]
Abstract
In the field of intracellular protein sorting, peroxisomes are most famous by their capacity to import oligomeric proteins. The data supporting this remarkable property are abundant and, understandably, have inspired a variety of hypothetical models on how newly synthesized (cytosolic) proteins reach the peroxisome matrix. However, there is also accumulating evidence suggesting that many peroxisomal oligomeric proteins actually arrive at the peroxisome still as monomers. In support of this idea, recent data suggest that PEX5, the shuttling receptor for peroxisomal matrix proteins, is also a chaperone/holdase, binding newly synthesized peroxisomal proteins in the cytosol and blocking their oligomerization. Here we review the data behind these two different perspectives and discuss their mechanistic implications on this protein sorting pathway.
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12
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Li J, Liu J, Wang G, Cha JY, Li G, Chen S, Li Z, Guo J, Zhang C, Yang Y, Kim WY, Yun DJ, Schumaker KS, Chen Z, Guo Y. A chaperone function of NO CATALASE ACTIVITY1 is required to maintain catalase activity and for multiple stress responses in Arabidopsis. THE PLANT CELL 2015; 27:908-25. [PMID: 25700484 PMCID: PMC4558663 DOI: 10.1105/tpc.114.135095] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/20/2015] [Accepted: 02/04/2015] [Indexed: 05/19/2023]
Abstract
Catalases are key regulators of reactive oxygen species homeostasis in plant cells. However, the regulation of catalase activity is not well understood. In this study, we isolated an Arabidopsis thaliana mutant, no catalase activity1-3 (nca1-3) that is hypersensitive to many abiotic stress treatments. The mutated gene was identified by map-based cloning as NCA1, which encodes a protein containing an N-terminal RING-finger domain and a C-terminal tetratricopeptide repeat-like helical domain. NCA1 interacts with and increases catalase activity maximally in a 240-kD complex in planta. In vitro, NCA1 interacts with CATALASE2 (CAT2) in a 1:1 molar ratio, and the NCA1 C terminus is essential for this interaction. CAT2 activity increased 10-fold in the presence of NCA1, and zinc ion binding of the NCA1 N terminus is required for this increase. NCA1 has chaperone protein activity that may maintain the folding of catalase in a functional state. NCA1 is a cytosol-located protein. Expression of NCA1 in the mitochondrion of the nca1-3 mutant does not rescue the abiotic stress phenotypes of the mutant, while expression in the cytosol or peroxisome does. Our results suggest that NCA1 is essential for catalase activity.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Juntao Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Guoqiang Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Joon-Yung Cha
- Division of Applied Life Sciences (BK21 Plus Program), Gyeongsang National University, Jinju City 660-701, Korea
| | - Guannan Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - She Chen
- National Institute of Biological Sciences, Beijing 102206, China
| | - Zhen Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Jinghua Guo
- College of Life Science, Beijing Normal University, Beijing 100875, China
| | - Caiguo Zhang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Woe-Yeon Kim
- Division of Applied Life Sciences (BK21 Plus Program), Gyeongsang National University, Jinju City 660-701, Korea
| | - Dae-Jin Yun
- Division of Applied Life Sciences (BK21 Plus Program), Gyeongsang National University, Jinju City 660-701, Korea
| | - Karen S Schumaker
- School of Plant Sciences, University of Arizona, Tucson, Arizona 85721
| | - Zhongzhou Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yan Guo
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China National Center for Plant Gene Research, Beijing 100193, China
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Wang X, Li S, Liu Y, Ma C. Redox regulated peroxisome homeostasis. Redox Biol 2014; 4:104-8. [PMID: 25545794 PMCID: PMC4309859 DOI: 10.1016/j.redox.2014.12.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/13/2014] [Accepted: 12/15/2014] [Indexed: 11/15/2022] Open
Abstract
Peroxisomes are ubiquitous organelles present in nearly all eukaryotic cells. Conserved functions of peroxisomes encompass beta-oxidation of fatty acids and scavenging of reactive oxygen species generated from diverse peroxisomal metabolic pathways. Peroxisome content, number, and size can change quickly in response to environmental and/or developmental cues. To achieve efficient peroxisome homeostasis, peroxisome biogenesis and degradation must be orchestrated. We review the current knowledge on redox regulated peroxisome biogenesis and degradation with an emphasis on yeasts and plants. Conserved functions of peroxisomes include β-oxidation of fatty acids and scavenging of ROS. Peroxisome homeostasis is achieved by coordinating biogenesis and degradation. Repression of peroxisome biogenesis under oxidative stress. Superfluous and oxidative damaged peroxisomes are degraded by pexophagy.
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Affiliation(s)
- Xiaofeng Wang
- College of Life Sciences, Shandong Normal University, Wenhua East Road 88, Jinan, Shandong 250014, China
| | - Shuo Li
- College of Life Sciences, Shandong Normal University, Wenhua East Road 88, Jinan, Shandong 250014, China
| | - Yu Liu
- College of Life Sciences, Shandong Normal University, Wenhua East Road 88, Jinan, Shandong 250014, China
| | - Changle Ma
- College of Life Sciences, Shandong Normal University, Wenhua East Road 88, Jinan, Shandong 250014, China.
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14
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The Peroxisomal Catalase Gene in the Methylotrophic YeastPichia methanolica. Biosci Biotechnol Biochem 2014; 74:1733-5. [DOI: 10.1271/bbb.100329] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Msn5p Is Involved in Formaldehyde Resistance but Not in Oxidative Stress Response in the Methylotrophic YeastCandida boidinii. Biosci Biotechnol Biochem 2014; 76:299-304. [DOI: 10.1271/bbb.110679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Bioinformatics study of delta-12 fatty acid desaturase 2 (FAD2) gene in oilseeds. Mol Biol Rep 2014; 41:5077-87. [DOI: 10.1007/s11033-014-3373-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
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17
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Ravin NV, Eldarov MA, Kadnikov VV, Beletsky AV, Schneider J, Mardanova ES, Smekalova EM, Zvereva MI, Dontsova OA, Mardanov AV, Skryabin KG. Genome sequence and analysis of methylotrophic yeast Hansenula polymorpha DL1. BMC Genomics 2013; 14:837. [PMID: 24279325 PMCID: PMC3866509 DOI: 10.1186/1471-2164-14-837] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Accepted: 11/15/2013] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Hansenula polymorpha DL1 is a methylotrophic yeast, widely used in fundamental studies of methanol metabolism, peroxisome biogenesis and function, and also as a microbial cell factory for production of recombinant proteins and metabolic engineering towards the goal of high temperature ethanol production. RESULTS We have sequenced the 9 Mbp H. polymorpha DL1 genome and performed whole-genome analysis for the H. polymorpha transcriptome obtained from both methanol- and glucose-grown cells. RNA-seq analysis revealed the complex and dynamic character of the H. polymorpha transcriptome under the two studied conditions, identified abundant and highly unregulated expression of 40% of the genome in methanol grown cells, and revealed alternative splicing events. We have identified subtelomerically biased protein families in H. polymorpha, clusters of LTR elements at G + C-poor chromosomal loci in the middle of each of the seven H. polymorpha chromosomes, and established the evolutionary position of H. polymorpha DL1 within a separate yeast clade together with the methylotrophic yeast Pichia pastoris and the non-methylotrophic yeast Dekkera bruxellensis. Intergenome comparisons uncovered extensive gene order reshuffling between the three yeast genomes. Phylogenetic analyses enabled us to reveal patterns of evolution of methylotrophy in yeasts and filamentous fungi. CONCLUSIONS Our results open new opportunities for in-depth understanding of many aspects of H. polymorpha life cycle, physiology and metabolism as well as genome evolution in methylotrophic yeasts and may lead to novel improvements toward the application of H. polymorpha DL-1 as a microbial cell factory.
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Affiliation(s)
- Nikolai V Ravin
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Michael A Eldarov
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Vitaly V Kadnikov
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Alexey V Beletsky
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Jessica Schneider
- Institute for Bioinformatics, Center for Biotechnology, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Eugenia S Mardanova
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Elena M Smekalova
- Faculty of Chemistry, Lomonosov Moscow State University, 119999 Moscow, Russia and Belozersky Institute, Moscow State University, Leninskie Gory 1, Bldg. 40, 119991 Moscow, Russia
| | - Maria I Zvereva
- Faculty of Chemistry, Lomonosov Moscow State University, 119999 Moscow, Russia and Belozersky Institute, Moscow State University, Leninskie Gory 1, Bldg. 40, 119991 Moscow, Russia
| | - Olga A Dontsova
- Faculty of Chemistry, Lomonosov Moscow State University, 119999 Moscow, Russia and Belozersky Institute, Moscow State University, Leninskie Gory 1, Bldg. 40, 119991 Moscow, Russia
| | - Andrey V Mardanov
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
| | - Konstantin G Skryabin
- Centre “Bioengineering” of RAS, Prosp. 60-let Oktyabrya, bld. 7-1, Moscow 117312, Russia
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18
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Lefevre SD, Roermund CW, Wanders RJA, Veenhuis M, Klei IJ. The significance of peroxisome function in chronological aging of Saccharomyces cerevisiae. Aging Cell 2013; 12:784-93. [PMID: 23755917 PMCID: PMC3824234 DOI: 10.1111/acel.12113] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2013] [Indexed: 12/01/2022] Open
Abstract
We studied the chronological lifespan of glucose-grown Saccharomyces cerevisiae in relation to the function of intact peroxisomes. We analyzed four different peroxisome-deficient (pex) phenotypes. These included Δpex3 cells that lack peroxisomal membranes and in which all peroxisomal proteins are mislocalized together with Δpex6 in which all matrix proteins are mislocalized to the cytosol, whereas membrane proteins are still correctly sorted to peroxisomal ghosts. In addition, we analyzed two mutants in which the peroxisomal location of the β-oxidation machinery is in part disturbed. We analyzed Δpex7 cells that contain virtually normal peroxisomes, except that all matrix proteins that contain a peroxisomal targeting signal type 2 (PTS2, also including thiolase), are mislocalized to the cytosol. In Δpex5 cells, peroxisomes only contain matrix proteins with a PTS2 in conjunction with all proteins containing a peroxisomal targeting signal type 1 (PTS1, including all β-oxidation enzymes except thiolase) are mislocalized to the cytosol. We show that intact peroxisomes are an important factor in yeast chronological aging because all pex mutants showed a reduced chronological lifespan. The strongest reduction was observed in Δpex5 cells. Our data indicate that this is related to the complete inactivation of the peroxisomal β-oxidation pathway in these cells due to the mislocalization of thiolase. Our studies suggest that during chronological aging, peroxisomal β-oxidation contributes to energy generation by the oxidation of fatty acids that are released by degradation of storage materials and recycled cellular components during carbon starvation conditions.
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Affiliation(s)
- Sophie D. Lefevre
- Molecular Cell Biology Groningen Biomolecular Sciences and Biotechnology Institute (GBB) University of Groningen P.O. Box 111039700CC Groningen The Netherlands
| | - Carlo W. Roermund
- Departments of Pediatrics and Clinical Chemistry Laboratory of Genetic Metabolic Diseases Academic Medical Centre University of Amsterdam 1105 AZ Amsterdam The Netherlands
| | - Ronald J. A. Wanders
- Departments of Pediatrics and Clinical Chemistry Laboratory of Genetic Metabolic Diseases Academic Medical Centre University of Amsterdam 1105 AZ Amsterdam The Netherlands
| | - Marten Veenhuis
- Molecular Cell Biology Groningen Biomolecular Sciences and Biotechnology Institute (GBB) University of Groningen P.O. Box 111039700CC Groningen The Netherlands
| | - Ida J. Klei
- Molecular Cell Biology Groningen Biomolecular Sciences and Biotechnology Institute (GBB) University of Groningen P.O. Box 111039700CC Groningen The Netherlands
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19
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Mhamdi A, Noctor G, Baker A. Plant catalases: Peroxisomal redox guardians. Arch Biochem Biophys 2012; 525:181-94. [DOI: 10.1016/j.abb.2012.04.015] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 04/12/2012] [Accepted: 04/14/2012] [Indexed: 12/17/2022]
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Abstract
This article focuses on drug targeting to specific cellular organelles for therapeutic purposes. Drugs can be delivered to all major organelles of the cell (cytosol, endosome/lysosome, nucleus, nucleolus, mitochondria, endoplasmic reticulum, Golgi apparatus, peroxisomes and proteasomes) where they exert specific effects in those particular subcellular compartments. Delivery can be achieved by chemical (e.g., polymeric) or biological (e.g., signal sequences) means. Unidirectional targeting to individual organelles has proven to be immensely successful for drug therapy. Newer technologies that accommodate multiple signals (e.g., protein switch and virus-like delivery systems) mimic nature and allow for a more sophisticated approach to drug delivery. Harnessing different methods of targeting multiple organelles in a cell will lead to better drug delivery and improvements in disease therapy.
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21
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Vanz AL, Lünsdorf H, Adnan A, Nimtz M, Gurramkonda C, Khanna N, Rinas U. Physiological response of Pichia pastoris GS115 to methanol-induced high level production of the Hepatitis B surface antigen: catabolic adaptation, stress responses, and autophagic processes. Microb Cell Fact 2012; 11:103. [PMID: 22873405 PMCID: PMC3539919 DOI: 10.1186/1475-2859-11-103] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/28/2012] [Indexed: 01/22/2023] Open
Abstract
Background Pichia pastoris is an established eukaryotic host for the production of recombinant proteins. Most often, protein production is under the control of the strong methanol-inducible aox1 promoter. However, detailed information about the physiological alterations in P. pastoris accompanying the shift from growth on glycerol to methanol-induced protein production under industrial relevant conditions is missing. Here, we provide an analysis of the physiological response of P. pastoris GS115 to methanol-induced high-level production of the Hepatitis B virus surface antigen (HBsAg). High product titers and the retention of the protein in the endoplasmic reticulum (ER) are supposedly of major impact on the host physiology. For a more detailed understanding of the cellular response to methanol-induced HBsAg production, the time-dependent changes in the yeast proteome and ultrastructural cell morphology were analyzed during the production process. Results The shift from growth on glycerol to growth and HBsAg production on methanol was accompanied by a drastic change in the yeast proteome. In particular, enzymes from the methanol dissimilation pathway started to dominate the proteome while enzymes from the methanol assimilation pathway, e.g. the transketolase DAS1, increased only moderately. The majority of methanol was metabolized via the energy generating dissimilatory pathway leading to a corresponding increase in mitochondrial size and numbers. The methanol-metabolism related generation of reactive oxygen species induced a pronounced oxidative stress response (e.g. strong increase of the peroxiredoxin PMP20). Moreover, the accumulation of HBsAg in the ER resulted in the induction of the unfolded protein response (e.g. strong increase of the ER-resident disulfide isomerase, PDI) and the ER associated degradation (ERAD) pathway (e.g. increase of two cytosolic chaperones and members of the AAA ATPase superfamily) indicating that potential degradation of HBsAg could proceed via the ERAD pathway and through the proteasome. However, the amount of HBsAg did not show any significant decline during the cultivation revealing its general protection from proteolytic degradation. During the methanol fed-batch phase, induction of vacuolar proteases (e.g. strong increase of APR1) and constitutive autophagic processes were observed. Vacuolar enclosures were mainly found around peroxisomes and not close to HBsAg deposits and, thus, were most likely provoked by peroxisomal components damaged by reactive oxygen species generated by methanol oxidation. Conclusions In the methanol fed-batch phase P. pastoris is exposed to dual stress; stress resulting from methanol degradation and stress resulting from the production of the recombinant protein leading to the induction of oxidative stress and unfolded protein response pathways, respectively. Finally, the modest increase of methanol assimilatory enzymes compared to the strong increase of methanol dissimilatory enzymes suggests here a potential to increase methanol incorporation into biomass/product through metabolic enhancement of the methanol assimilatory pathway.
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Affiliation(s)
- Ana Leticia Vanz
- Technical Chemistry-Life Science, Leibniz University of Hannover, Hannover, Germany
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22
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Otera H, Fujiki Y. Pex5p imports folded tetrameric catalase by interaction with Pex13p. Traffic 2012; 13:1364-77. [PMID: 22747494 DOI: 10.1111/j.1600-0854.2012.01391.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 06/26/2012] [Accepted: 07/02/2012] [Indexed: 11/28/2022]
Abstract
Human catalase forms a 240-kDa tetrameric complex and degrades H(2) O(2) in peroxisomes. Human catalase is targeted to peroxisomes by the interaction of its peroxisomal targeting signal type 1 (PTS1)-like KANL sequence with the cytosolic PTS1 receptor Pex5p. We show herein that human catalase tetramers are formed in the cytoplasm and that the expression of a PTS signal on each of the four subunits is not necessary for peroxisomal transport. We previously demonstrated that a Pex5p mutant defective in binding to Pex13p, designated Pex5p(Mut234), imports typical PTS1-type proteins but not catalase. This impaired catalase import is not rescued by replacing its C-terminal KANL sequence with a typical PTS1 sequence, SKL, indicating that the failure of catalase import in Mut234-expressing cells is not due to its weak PTS1. In contrast, several enzymatically inactive and monomeric mutants of catalase are efficiently imported in Mut234-expressing cells. Moreover, trimeric chloramphenicol acetyltransferase (CAT) harboring SKL is not imported in Pex5p(Mut234)-expressing cells, but CAT-SKL trimers are transported to peroxisomes in the wild-type cells. These findings suggest that the Pex5p-Pex13p interaction likely plays a pivotal role in the peroxisomal import of folded and oligomeric proteins.
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Affiliation(s)
- Hidenori Otera
- Department of Biology, Faculty of Sciences, Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 812-8581, Japan
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23
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The relevance of the non-canonical PTS1 of peroxisomal catalase. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1823:1133-41. [PMID: 22546606 DOI: 10.1016/j.bbamcr.2012.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Revised: 04/12/2012] [Accepted: 04/16/2012] [Indexed: 11/21/2022]
Abstract
Catalase is sorted to peroxisomes via a C-terminal peroxisomal targeting signal 1 (PTS1), which binds to the receptor protein Pex5. Analysis of the C-terminal sequences of peroxisomal catalases from various species indicated that catalase never contains the typical C-terminal PTS1 tripeptide-SKL, but invariably is sorted to peroxisomes via a non-canonical sorting sequence. We analyzed the relevance of the non-canonical PTS1 of catalase of the yeast Hansenula polymorpha (-SKI). Using isothermal titration microcalorimetry, we show that the affinity of H. polymorpha Pex5 for a peptide containing -SKI at the C-terminus is 8-fold lower relative to a peptide that has a C-terminal -SKL. Fluorescence microscopy indicated that green fluorescent protein containing the -SKI tripeptide (GFP-SKI) has a prolonged residence time in the cytosol compared to GFP containing -SKL. Replacing the -SKI sequence of catalase into -SKL resulted in reduced levels of enzymatically active catalase in whole cell lysates together with the occurrence of catalase protein aggregates in the peroxisomal matrix. Moreover, the cultures showed a reduced growth yield in methanol-limited chemostats. Finally, we show that a mutant catalase variant that is unable to properly fold mislocalizes in protein aggregates in the cytosol. However, by replacing the PTS1 into -SKL the mutant variant accumulates in protein aggregates inside peroxisomes. Based on our findings we propose that the relatively weak PTS1 of catalase is important to allow proper folding of the enzyme prior to import into peroxisomes, thereby preventing the accumulation of catalase protein aggregates in the organelle matrix.
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Kawaguchi K, Yurimoto H, Oku M, Sakai Y. Yeast methylotrophy and autophagy in a methanol-oscillating environment on growing Arabidopsis thaliana leaves. PLoS One 2011; 6:e25257. [PMID: 21966472 PMCID: PMC3180373 DOI: 10.1371/journal.pone.0025257] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Accepted: 08/30/2011] [Indexed: 11/19/2022] Open
Abstract
The yeast Candida boidinii capable of growth on methanol proliferates and survives on the leaves of Arabidopsis thaliana. The local methanol concentration at the phyllosphere of growing A. thaliana exhibited daily periodicity, and yeast cells responded by altering both the expression of methanol-inducible genes and peroxisome proliferation. Even under these dynamically changing environmental conditions, yeast cells proliferated 3 to 4 times in 11 days. Among the C1-metabolic enzymes, enzymes in the methanol assimilation pathway, but not formaldehyde dissimilation or anti-oxidizing enzymes, were necessary for yeast proliferation at the phyllosphere. Furthermore, both peroxisome assembly and pexophagy, a selective autophagy pathway that degrades peroxisomes, were necessary for phyllospheric proliferation. Thus, the present study sheds light on the life cycle and physiology of yeast in the natural environment at both the molecular and cellular levels.
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Affiliation(s)
- Kosuke Kawaguchi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Hiroya Yurimoto
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Masahide Oku
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Yasuyoshi Sakai
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Research Unit for Physiological Chemistry, The Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Tokyo, Japan
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25
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Yeast methylotrophy: metabolism, gene regulation and peroxisome homeostasis. Int J Microbiol 2011; 2011:101298. [PMID: 21754936 PMCID: PMC3132611 DOI: 10.1155/2011/101298] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 05/09/2011] [Indexed: 11/18/2022] Open
Abstract
Eukaryotic methylotrophs, which are able to obtain all the carbon and energy needed for growth from methanol, are restricted to a limited number of yeast species. When these yeasts are grown on methanol as the sole carbon and energy source, the enzymes involved in methanol metabolism are strongly induced, and the membrane-bound organelles, peroxisomes, which contain key enzymes of methanol metabolism, proliferate massively. These features have made methylotrophic yeasts attractive hosts for the production of heterologous proteins and useful model organisms for the study of peroxisome biogenesis and degradation. In this paper, we describe recent insights into the molecular basis of yeast methylotrophy.
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26
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Activation of the oxidative stress regulator PpYap1 through conserved cysteine residues during methanol metabolism in the yeast Pichia pastoris. Biosci Biotechnol Biochem 2009; 73:1404-11. [PMID: 19502720 DOI: 10.1271/bbb.90109] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The methylotrophic yeast Pichia pastoris can grow on methanol as sole source of carbon and energy. The first reaction in yeast methanol metabolism, catalyzed by an abundant peroxisomal enzyme, alcohol oxidase, generates high levels of H(2)O(2), but the oxidative stress response during methanol metabolism has not been elucidated. In this study, we isolated the Yap1 homolog of P. pastoris (PpYap1) and analyzed the properties of a PpYAP1-disruption strain. The PpYap1 transcription factor is activated after exposure to various reactive agents, and therefore functions as a regulator of the redox system in P. pastoris. We have also identified PpGPX1, the unique glutathione peroxidase-encoding gene in P. pastoris whose expression is induced by PpYap1. PpGpx1, but not the ScTsa1 or SpTpx1 homolog PpTsa1, functions as a H(2)O(2) sensor and activates PpYap1. This study is the first demonstration of a yeast Yap1 family protein activated during conventional metabolism.
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Aksam EB, de Vries B, van der Klei IJ, Kiel JAKW. Preserving organelle vitality: peroxisomal quality control mechanisms in yeast. FEMS Yeast Res 2009; 9:808-20. [PMID: 19538506 DOI: 10.1111/j.1567-1364.2009.00534.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Cellular proteins and organelles such as peroxisomes are under continuous quality control. Upon synthesis in the cytosol, peroxisomal proteins are kept in an import-competent state by chaperones or specific proteins with an analogous function to prevent degradation by the ubiquitin-proteasome system. During protein translocation into the organelle, the peroxisomal targeting signal receptors (Pex5, Pex20) are also continuously undergoing quality control to enable efficient functioning of the translocon (RADAR pathway). Even upon maturation of peroxisomes, matrix enzymes and peroxisomal membranes remain subjected to quality control. As a result of their oxidative metabolism, peroxisomes are producers of reactive oxygen species (ROS), which may damage proteins and lipids. To counteract ROS-induced damage, yeast peroxisomes contain two important antioxidant enzymes: catalase and an organelle-specific peroxiredoxin. Additionally, a Lon-type protease has recently been identified in the peroxisomal matrix, which is capable of degrading nonfunctional proteins. Finally, cellular housekeeping processes keep track of the functioning of peroxisomes so that dysfunctional organelles can be quickly removed via selective autophagy (pexophagy). This review provides an overview of the major processes involved in quality control of yeast peroxisomes.
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Affiliation(s)
- Eda Bener Aksam
- Molecular Cell Biology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
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28
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Blaize J, L’Amoreaux WJ, Downey M, McCoy EC. Dibutylphthalate and Tween 80 alter ultrastructure inCandida albicans: implications for peroxisome proliferation. Can J Microbiol 2009; 55:437-49. [DOI: 10.1139/w08-153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phthalates are ubiquitous environmental pollutants associated with endocrine disruption and peroxisome proliferation in experimental animals. In yeasts exposed to environmental chemicals, including phthalates, alterations in cell growth, cellular morphology, and H2O2detoxification occur. Nutrient availability also influences diverse cellular processes. Differences in responses to environmental stress between Candida albicans and the model yeast, Saccharomyces cerevesiae , have been reported. In this study, we chose C. albicans as an alternate model for testing estrogen-like chemicals because of its high affinity estrogen-binding protein and, in contrast to S. cerevesiae, estrogens are not growth inhibitory for C. albicans. Cultures were grown in either yeast nitrogen dextrose (YND; phosphate limiting) or YNDP (YND plus 100 mmol/L inorganic phosphate). For chemical testing, 0.5% dibutylphthalate (DBP), 0.05% Tween 80, or a combination of the two (DBPT) were incorporated in growth media to investigate the effects of these estrogenic agents on cell proliferation, morphology, and catalase demonstration. We observed significant differences in cell growth related to DBP and changes in cell wall thickness related to both Tween 80 and phosphate. We describe ultrastructural changes including detachment of the outer yeast cell wall layer and presence of putative peroxisomes. Our findings support the proposal that C. albicans may be particularly suitable for use in studies involving cellular responses associated with exposure to estrogenic chemicals contained in complex mixtures.
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Affiliation(s)
- Jonathan Blaize
- Department of Biology, College of Staten Island, The City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
- Department of Biology and Advanced Imaging Facility, College of Staten Island, The City University of New York, 2800 Victory Blvd, Staten Island, NY 10314, USA
- Department of Biology and Center for Environmental Sciences, College of Staten Island, City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
| | - William J. L’Amoreaux
- Department of Biology, College of Staten Island, The City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
- Department of Biology and Advanced Imaging Facility, College of Staten Island, The City University of New York, 2800 Victory Blvd, Staten Island, NY 10314, USA
- Department of Biology and Center for Environmental Sciences, College of Staten Island, City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
| | - Maureen Downey
- Department of Biology, College of Staten Island, The City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
- Department of Biology and Advanced Imaging Facility, College of Staten Island, The City University of New York, 2800 Victory Blvd, Staten Island, NY 10314, USA
- Department of Biology and Center for Environmental Sciences, College of Staten Island, City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
| | - Elena C. McCoy
- Department of Biology, College of Staten Island, The City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
- Department of Biology and Advanced Imaging Facility, College of Staten Island, The City University of New York, 2800 Victory Blvd, Staten Island, NY 10314, USA
- Department of Biology and Center for Environmental Sciences, College of Staten Island, City University of New York, 2800 Victory Blvd., Staten Island, NY 10314, USA
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Yap1-regulated glutathione redox system curtails accumulation of formaldehyde and reactive oxygen species in methanol metabolism of Pichia pastoris. EUKARYOTIC CELL 2009; 8:540-9. [PMID: 19252120 DOI: 10.1128/ec.00007-09] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The glutathione redox system, including the glutathione biosynthesis and glutathione regeneration reaction, has been found to play a critical role in the yeast Pichia pastoris during growth on methanol, and this regulation was at least partly executed by the transcription factor PpYap1. During adaptation to methanol medium, PpYap1 transiently localized to the nucleus and activated the expression of the glutathione redox system and upregulated glutathione reductase 1 (Glr1). Glr1 activates the regeneration of the reduced form of glutathione (GSH). Depletion of Glr1 caused a severe growth defect on methanol and hypersensitivity to formaldehyde (HCHO), which could be complemented by addition of GSH to the medium. Disruption of the genes for the HCHO-oxidizing enzymes PpFld1 and PpFgh1 caused a comparable phenotype, but disruption of the downstream gene PpFDH1 did not, demonstrating the importance of maintaining intracellular GSH levels. Absence of the peroxisomal glutathione peroxidase Pmp20 also triggered nuclear localization of PpYap1, and although cells were not sensitive to HCHO, growth on methanol was again severely impaired due to oxidative stress. Thus, the PpYap1-regulated glutathione redox system has two important roles, i.e., HCHO metabolism and detoxification of reactive oxygen species.
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Abstract
Reporter systems are used in Candida albicans in three major experimental areas. These include gene expression, promoter analysis, and protein expression/localization. Heterologous expression in C. albicans is either not effective or inefficient due to the alternative codon usage in Candida, particularly CTG. Consequently, several reporter genes have been constructed by optimizing codons for expression in Candida. The reporter systems include lacZ, luciferase, and GFP. Generally, PCR site directed mutagenesis has been used to construct the modified reporter. Reporter gene vectors are not commercially available for Candida, but they can normally be requested from the laboratories that developed the constructs.
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Affiliation(s)
- Joy Sturtevant
- Department of Microbiology, Immunology and Parasitology, Louisiana State University School of Medicine, New Orleans, LA, USA
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31
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Eastmond PJ. MONODEHYROASCORBATE REDUCTASE4 is required for seed storage oil hydrolysis and postgerminative growth in Arabidopsis. THE PLANT CELL 2007; 19:1376-87. [PMID: 17449810 PMCID: PMC1913749 DOI: 10.1105/tpc.106.043992] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 03/26/2007] [Accepted: 04/09/2007] [Indexed: 05/15/2023]
Abstract
Hydrogen peroxide is a major by-product of peroxisomal metabolism and has the potential to cause critical oxidative damage. In all eukaryotes, catalase is thought to be instrumental in removing this H(2)O(2). However, plants also contain a peroxisomal membrane-associated ascorbate-dependent electron transfer system, using ascorbate peroxidase and monodehydroascorbate reductase (MDAR). Here, I report that the conditional seedling-lethal sugar-dependent2 mutant of Arabidopsis thaliana is deficient in the peroxisomal membrane isoform of MDAR (MDAR4). Following germination, Arabidopsis seeds rely on storage oil breakdown to supply carbon skeletons and energy for early seedling growth, and massive amounts of H(2)O(2) are generated within the peroxisome as a by-product of fatty acid beta-oxidation. My data suggest that the membrane-bound MDAR4 component of the ascorbate-dependent electron transfer system is necessary to detoxify H(2)O(2), which escapes the peroxisome. This function appears to be critical to protect oil bodies that are in close proximity to peroxisomes from incurring oxidative damage, which otherwise inactivates the triacylglycerol lipase SUGAR-DEPENDENT1 and cuts off the supply of carbon for seedling establishment.
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Affiliation(s)
- Peter J Eastmond
- Warwick HRI, University of Warwick, Wellesbourne, Warwickshire, CV35 9EF, UK.
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Hartner FS, Glieder A. Regulation of methanol utilisation pathway genes in yeasts. Microb Cell Fact 2006; 5:39. [PMID: 17169150 PMCID: PMC1781073 DOI: 10.1186/1475-2859-5-39] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2006] [Accepted: 12/14/2006] [Indexed: 11/10/2022] Open
Abstract
Methylotrophic yeasts such as Candida boidinii, Hansenula polymorpha, Pichia methanolica and Pichia pastoris are an emerging group of eukaryotic hosts for recombinant protein production with an ever increasing number of applications during the last 30 years. Their applications are linked to the use of strong methanol-inducible promoters derived from genes of the methanol utilisation pathway. These promoters are tightly regulated, highly repressed in presence of non-limiting concentrations of glucose in the medium and strongly induced if methanol is used as carbon source. Several factors involved in this tight control and their regulatory effects have been described so far. This review summarises available data about the regulation of promoters from methanol utilisation pathway genes. Furthermore, the role of cis and trans acting factors (e.g. transcription factors, glucose processing enzymes) in the expression of methanol utilisation pathway genes is reviewed both in the context of the native cell environment as well as in heterologous hosts.
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Affiliation(s)
- Franz S Hartner
- Research Centre Applied Biocatalysis GmbH, Petersgasse 14/2, 8010 Graz, Austria
| | - Anton Glieder
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14/2, 8010 Graz, Austria
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van der Klei IJ, Yurimoto H, Sakai Y, Veenhuis M. The significance of peroxisomes in methanol metabolism in methylotrophic yeast. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2006; 1763:1453-62. [PMID: 17023065 DOI: 10.1016/j.bbamcr.2006.07.016] [Citation(s) in RCA: 141] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2006] [Accepted: 07/26/2006] [Indexed: 11/22/2022]
Abstract
The capacity to use methanol as sole source of carbon and energy is restricted to relatively few yeast species. This may be related to the low efficiency of methanol metabolism in yeast, relative to that of prokaryotes. This contribution describes the details of methanol metabolism in yeast and focuses on the significance of compartmentalization of this metabolic pathway in peroxisomes.
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Affiliation(s)
- Ida J van der Klei
- Eukaryotic Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, P.O. Box 14, NL-9750 AA Haren, The Netherlands
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34
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Makkar RS, Contreras MA, Paintlia AS, Smith BT, Haq E, Singh I. Molecular organization of peroxisomal enzymes: protein-protein interactions in the membrane and in the matrix. Arch Biochem Biophys 2006; 451:128-40. [PMID: 16781659 DOI: 10.1016/j.abb.2006.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2006] [Revised: 05/03/2006] [Accepted: 05/04/2006] [Indexed: 11/30/2022]
Abstract
The beta-oxidation of fatty acids in peroxisomes produces hydrogen peroxide (H2O2), a toxic metabolite, as a bi-product. Fatty acids beta-oxidation activity is deficient in X-linked adrenoleukodystrophy (X-ALD) because of mutation in ALD-gene resulting in loss of very long chain acyl-CoA synthetase (VLCS) activity. It is also affected in disease with catalase negative peroxisomes as a result of inactivation by H2O2. Therefore, the following studies were undertaken to delineate the molecular interactions between both the ALD-gene product (adrenoleukodystrophy protein, ALDP) and VLCS as well as H2O2 degrading enzyme catalase and proteins of peroxisomal beta-oxidation. Studies using a yeast two hybrid system and surface plasmon resonance techniques indicate that ALDP, a peroxisomal membrane protein, physically interacts with VLCS. Loss of these interactions in X-ALD cells may result in a deficiency in VLCS activity. The yeast two-hybrid system studies also indicated that catalase physically interacts with L-bifunctional enzyme (L-BFE). Interactions between catalase and L-BFE were further supported by affinity purification, using a catalase-linked resin. The affinity bound 74-kDa protein, was identified as L-BFE by Western blot with specific antibodies and by proteomic analysis. Additional support for their interaction comes from immunoprecipitation of L-BFE with antibodies against catalase as a catalase- L-BFE complex. siRNA for L-BFE decreased the specific activity and protein levels of catalase without changing its subcellular distribution. These observations indicate that L-BFE might help in oligomerization and possibly in the localization of catalase at the site of H2O2 production in the peroxisomal beta-oxidation pathway.
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Affiliation(s)
- Randhir S Makkar
- The Charles Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA
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35
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Wood CS, Koepke JI, Teng H, Boucher KK, Katz S, Chang P, Terlecky LJ, Papanayotou I, Walton PA, Terlecky SR. Hypocatalasemic fibroblasts accumulate hydrogen peroxide and display age-associated pathologies. Traffic 2006; 7:97-107. [PMID: 16445690 DOI: 10.1111/j.1600-0854.2005.00358.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Human epidemiological studies point to an association of hypocatalasemia and an increased risk of age-related disease. Unfortunately, the cellular and molecular manifestations of hypocatalasemia are only poorly understood. In this analysis, we have extensively characterized hypocatalasemic human fibroblasts and report that they amass hydrogen peroxide and are oxidatively damaged. Protein and DNA alike are affected, as are functioning and biogenesis of peroxisomes - the subcellular organelles which normally house catalase. Despite these pathologies and their relative inability to grow, the cells do not appear to be intrinsically senescent. With the goal of restoring oxidative balance and perhaps reversing some of the accumulated damage to critical cellular components, we transduced hypocatalasemic fibroblasts with a form of catalase specifically designed to efficiently traffic to peroxisomes. We show the strategy is extremely effective, with dramatic reductions seen in cellular hydrogen peroxide levels. Future longitudinal studies aimed at examining the effects of a more continuous and long-term protein therapy may now commence.
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Affiliation(s)
- Christopher S Wood
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI 48201, USA
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36
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Petrova VY, Drescher D, Kujumdzieva AV, Schmitt MJ. Dual targeting of yeast catalase A to peroxisomes and mitochondria. Biochem J 2004; 380:393-400. [PMID: 14998369 PMCID: PMC1224190 DOI: 10.1042/bj20040042] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2004] [Revised: 03/02/2004] [Accepted: 03/04/2004] [Indexed: 11/17/2022]
Abstract
Yeast catalase A (Cta1p) contains two peroxisomal targeting signals (SSNSKF) localized at its C-terminus and within the N-terminal third of the protein, which both can target foreign proteins to peroxisomes. In the present study we demonstrated that Cta1p can also enter mitochondria, although the enzyme lacks a classical mitochondrial import sequence. Cta1p co-targeting was studied in a catalase A null mutant after growth on different carbon sources, and expression of a Cta1p-GFP (green fluorescent protein)-fusion protein or a Cta1p derivative containing either a c-Myc epitope (Cta1p(myc)) or a SKF-extended tag (Cta1p(myc-SKF)). Peroxisomal and mitochondrial co-import of catalase A were tested qualitatively by fluorescence microscopy and functional complementation of a Delta cta1 null mutation, and quantitatively by subcellular fractionation followed by Western blot analysis and enzyme activity assays. Efficient Cta1p import into peroxisomes was observed when cells were cultivated under peroxisome-inducing conditions (i.e. growth on oleate), whereas significant co-import of Cta1p-GFP into mitochondria occurred when cells were grown under respiratory conditions that favour oxygen stress and ROS (reactive oxygen species) accumulation within this organelle. In particular, when cells were grown on the non-fermentable carbon source raffinose, respiration is maximally enhanced, and catalase A was efficiently targeted to the mitochondrial matrix where it presumably functions as scavenger of H2O2 and mitochondrial-derived ROS.
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Affiliation(s)
- Ventsislava Y Petrova
- Angewandte Molekularbiologie, Universität des Saarlandes, D-66041 Saarbrücken, Germany
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37
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Yurimoto H, Lee B, Yano T, Sakai Y, Kato N. Physiological role of S-formylglutathione hydrolase in C(1) metabolism of the methylotrophic yeast Candida boidinii. MICROBIOLOGY (READING, ENGLAND) 2003; 149:1971-1979. [PMID: 12904537 DOI: 10.1099/mic.0.26320-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The methylotrophic yeast Candida boidinii exhibits S-formylglutathione hydrolase activity (FGH, EC 3.1.2.12), which is involved in the glutathione-dependent formaldehyde oxidation pathway during growth on methanol as the sole carbon source. The structural gene, FGH1, was cloned from C. boidinii, and its predicted amino acid sequence showed more than 60 % similarity to those of FGHs from Paracoccus denitrificans and Saccharomyces cerevisiae, and human esterase D. FGH from C. boidinii contained a C-terminal tripeptide, SKL, which is a type I peroxisome-targeting signal, and a bimodal distribution of FGH between peroxisomes and the cytosol was demonstrated. The FGH1 gene was disrupted in the C. boidinii genome by one-step gene disruption. The fgh1Delta strain was still able to grow on methanol as a carbon source under methanol-limited chemostat conditions with low dilution rates (D<0.05 h(-1)), conditions under which a strain with disruption of the gene for formaldehyde dehydrogenase (another enzyme involved in the formaldehyde oxidation pathway) could not survive. These results suggested that FGH is not essential but necessary for optimal growth on methanol. This is believed to be the first report of detailed analyses of the FGH1 gene in a methylotrophic yeast strain.
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Affiliation(s)
- Hiroya Yurimoto
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Bumjun Lee
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Taisuke Yano
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yasuyoshi Sakai
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Nobuo Kato
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
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Legakis JE, Koepke JI, Jedeszko C, Barlaskar F, Terlecky LJ, Edwards HJ, Walton PA, Terlecky SR. Peroxisome senescence in human fibroblasts. Mol Biol Cell 2002; 13:4243-55. [PMID: 12475949 PMCID: PMC138630 DOI: 10.1091/mbc.e02-06-0322] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2002] [Revised: 07/31/2002] [Accepted: 09/13/2002] [Indexed: 12/19/2022] Open
Abstract
The molecular mechanisms of peroxisome biogenesis have begun to emerge; in contrast, relatively little is known about how the organelle functions as cells age. In this report, we characterize age-related changes in peroxisomes of human cells. We show that aging compromises peroxisomal targeting signal 1 (PTS1) protein import, affecting in particular the critical antioxidant enzyme catalase. The number and appearance of peroxisomes are altered in these cells, and the organelles accumulate the PTS1-import receptor, Pex5p, on their membranes. Concomitantly, cells produce increasing amounts of the toxic metabolite hydrogen peroxide, and we present evidence that this increased load of reactive oxygen species may further reduce peroxisomal protein import and exacerbate the effects of aging.
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Affiliation(s)
- Julie E Legakis
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, Michigan 48201, USA
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39
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Current awareness on yeast. Yeast 2002; 19:285-92. [PMID: 11816036 DOI: 10.1002/yea.821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
In order to keep subscribers up-to-date with the latest developments in their field, this current awareness service is provided by John Wiley & Sons and contains newly-published material on yeasts. Each bibliography is divided into 10 sections. 1 Books, Reviews & Symposia; 2 General; 3 Biochemistry; 4 Biotechnology; 5 Cell Biology; 6 Gene Expression; 7 Genetics; 8 Physiology; 9 Medical Mycology; 10 Recombinant DNA Technology. Within each section, articles are listed in alphabetical order with respect to author. If, in the preceding period, no publications are located relevant to any one of these headings, that section will be omitted. (3 weeks journals - search completed 5th. Dec. 2001)
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