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Chang Y, Wang Z, Li H, Dang W, Song Y, Kang X, Zhang H. Morphological Changes and Strong Cytotoxicity in Yarrowia lipolytica by Overexpressing Delta-12-Desaturase. J Fungi (Basel) 2024; 10:126. [PMID: 38392798 PMCID: PMC10890566 DOI: 10.3390/jof10020126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/26/2024] [Accepted: 01/31/2024] [Indexed: 02/24/2024] Open
Abstract
In this study, delta-12 desaturase was overexpressed in Yarrowia lipolytica using the single-copy integrative vector pINA1312 and multicopy integrative vector pINA1292, resulting in the engineered yeast strains 1312-12 and 1292-12, respectively. The content of intracellular linoleic acid (LA) in the 1292-12 strain was much higher than in the 1312-12 strain and the control group. One interesting finding was that the 1292-12 strain showed obvious changes in surface morphology. The 1292-12 colonies were much smaller and smoother, whereas their single cells became much larger compared to the control strain. In addition, the dry cell weight (DCW) of the 1292-12 strain was obviously increased from 8.5 to 12.7 g/L, but the viable cell number sharply decreased from 107 to 105/mL. These results indicated that increased LA content in Yarrowia lipolytica could induce morphological changes or even oxidative stress-dependent cell death. The reactive oxygen species (ROS) and malondialdehyde (MDA) were accumulated in the 1292-12 strain, while the antioxidant activities of intracellular catalase (CAT) and superoxide dismutase (SOD) were significantly decreased by 27.6 and 32.0%, respectively. Furthermore, it was also revealed that these issues could be ameliorated by the exogenous supplementation of vitamin C, fish and colza oil.
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Affiliation(s)
- Yufei Chang
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Zhen Wang
- School of Public Health, Qilu Medical University, Zibo 255300, China
| | - Hequn Li
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Wenrui Dang
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Xinxin Kang
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Huaiyuan Zhang
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
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Jamiu AT, Albertyn J, Sebolai O, Gcilitshana O, Pohl CH. Inhibitory effect of polyunsaturated fatty acids alone or in combination with fluconazole on Candida krusei biofilms in vitro and in Caenorhabditis elegans. Med Mycol 2021; 59:1225-1237. [PMID: 34558629 DOI: 10.1093/mmy/myab055] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/30/2021] [Accepted: 09/22/2021] [Indexed: 01/02/2023] Open
Abstract
The incidence of infections by non-albicans Candida species, including Candida krusei, is increasing. Candida krusei exhibits intrinsic resistance to fluconazole and rapidly develops acquired resistance to other antifungals. Moreover, this yeast can form biofilm with increased resistance. Hence, there is a need to develop novel therapeutic strategies to combat infections caused by this pathogen. One such approach is through combination therapy with natural compounds, such as polyunsaturated fatty acids (PUFAs). This study aims to investigate the effect of PUFAs on fluconazole susceptibility of C. krusei biofilms, as well as the conserved nature of these effects in the Caenorhabditis elegans infection model. C. krusei biofilms were exposed to various fatty acids as well as combinations of fluconazole and linoleic acid (LA) or gamma-linolenic acid (GLA). The effect of these treatments on biofilm formation, cell ultrastructure, membrane integrity, oxidative stress and efflux pump activity was evaluated. In addition, the ability of the PUFAs to prolong survival and reduce the fungal burden of infected C. elegans, in the absence and presence of fluconazole, was assessed. Two P|UFAs, LA and GLA had he displayed significant inhibition of C. krusei biofilms and both of them increased the susceptibility of C. krusei biofilm to fluconazole in vitro via induction of oxidative stress, cell membrane damage, and disruption of efflux pump activity. These PUFAs also extended the lifespan of infected nematodes and displayed a potentiating effect with fluconazole in this model. This may pave the way for future studies into novel antifungal drug targets and treatment options. LAY ABSTRACT The pathogenic yeast, Candida krusei, is naturally resistant to the antifungal drug, fluconazole. This study finds that polyunsaturated fatty acids, linoleic and gamma-linolenic acid, can inhibit C. krusei and overcome this resistance of in vitro biofilms, as well as in a nematode infection model.
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Affiliation(s)
- Abdullahi Temitope Jamiu
- Pathogenic Yeast Research Group, Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
| | - Jacobus Albertyn
- Pathogenic Yeast Research Group, Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
| | - Olihile Sebolai
- Pathogenic Yeast Research Group, Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
| | - Onele Gcilitshana
- Pathogenic Yeast Research Group, Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
| | - Carolina H Pohl
- Pathogenic Yeast Research Group, Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
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Sunjic SB, Gasparovic AC, Jaganjac M, Rechberger G, Meinitzer A, Grune T, Kohlwein SD, Mihaljevic B, Zarkovic N. Sensitivity of Osteosarcoma Cells to Concentration-Dependent Bioactivities of Lipid Peroxidation Product 4-Hydroxynonenal Depend on Their Level of Differentiation. Cells 2021; 10:cells10020269. [PMID: 33572933 PMCID: PMC7912392 DOI: 10.3390/cells10020269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 12/24/2022] Open
Abstract
4-Hydroxynonenal (HNE) is a major aldehydic product of lipid peroxidation known to exert several biological effects. Normal and malignant cells of the same origin express different sensitivity to HNE. We used human osteosarcoma cells (HOS) in different stages of differentiation in vitro, showing differences in mitosis, DNA synthesis, and alkaline phosphatase (ALP) staining. Differentiated HOS cells showed decreased proliferation (3H-thymidine incorporation), decreased viability (thiazolyl blue tetrazolium bromide-MTT), and increased apoptosis and necrosis (nuclear morphology by staining with 4′,6-diamidino-2-phenylindole-DAPI). Differentiated HOS also had less expressed c-MYC, but the same amount of c-FOS (immunocytochemistry). When exposed to HNE, differentiated HOS produced more reactive oxygen species (ROS) in comparison with undifferentiated HOS. To clarify this, we measured HNE metabolism by an HPLC method, total glutathione (GSH), oxidized GSH (ox GSH), glutathione transferase activity (GST), proteasomal activity by enzymatic methods, HNE-protein adducts by genuine ELISA and fatty acid composition by GC-MS in these cell cultures. Differentiated HOS cells had less GSH, lower HNE metabolism, increased formation of HNE-protein adducts, and lower proteasomal activity, in comparison to undifferentiated counterpart cells, while GST and oxGSH were the same. Fatty acids analyzed by GC-MS showed that there is an increase in C20:3 in differentiated HOS while the amount of C20:4 remained the same. The results showed that the cellular machinery responsible for protection against toxicity of HNE was less efficient in differentiated HOS cells. Moreover, differentiated HOS cells contained more C20:3 fatty acid, which might make them more sensitive to free radical-initiated oxidative chain reactions and more vulnerable to the effects of reactive aldehydes such as HNE. We propose that HNE might act as natural promotor of decay of malignant (osteosarcoma) cells in case of their differentiation associated with alteration of the lipid metabolism.
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Affiliation(s)
- Suzana Borovic Sunjic
- Laboratory for Oxidative Stress (LabOS), Division of Molecular Medicine, Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia; (S.B.S.); (A.C.G.); (M.J.); (B.M.)
| | - Ana Cipak Gasparovic
- Laboratory for Oxidative Stress (LabOS), Division of Molecular Medicine, Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia; (S.B.S.); (A.C.G.); (M.J.); (B.M.)
| | - Morana Jaganjac
- Laboratory for Oxidative Stress (LabOS), Division of Molecular Medicine, Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia; (S.B.S.); (A.C.G.); (M.J.); (B.M.)
| | - Gerald Rechberger
- Institute of Molecular Biosciences, Bio TechMed-Graz, University of Graz, 8010 Graz, Austria; (G.R.); (S.D.K.)
| | - Andreas Meinitzer
- University Clinic of Traumatology, University of Graz, 8010 Graz, Austria;
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany;
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, A-1090 Vienna, Austria
| | - Sepp D. Kohlwein
- Institute of Molecular Biosciences, Bio TechMed-Graz, University of Graz, 8010 Graz, Austria; (G.R.); (S.D.K.)
| | - Branka Mihaljevic
- Laboratory for Oxidative Stress (LabOS), Division of Molecular Medicine, Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia; (S.B.S.); (A.C.G.); (M.J.); (B.M.)
| | - Neven Zarkovic
- Laboratory for Oxidative Stress (LabOS), Division of Molecular Medicine, Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia; (S.B.S.); (A.C.G.); (M.J.); (B.M.)
- Correspondence:
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Jakovčević A, Žarković K, Jakovčević D, Rakušić Z, Prgomet D, Waeg G, Šunjić SB, Žarković N. The Appearance of 4-Hydroxy-2-Nonenal (HNE) in Squamous Cell Carcinoma of the Oropharynx. Molecules 2020; 25:molecules25040868. [PMID: 32079077 PMCID: PMC7070326 DOI: 10.3390/molecules25040868] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/04/2020] [Accepted: 02/10/2020] [Indexed: 12/23/2022] Open
Abstract
Tumor growth is associated with oxidative stress, which causes lipid peroxidation. The most intensively studied product of lipid peroxidation is 4-hydroxy-2-nonenal (HNE), which is considered as a “second messenger of free radicals” that binds to proteins and acts as a growth-regulating signaling factor. The incidence of squamous cell carcinoma of the oropharynx is associated with smoking, alcohol and infection of human papilloma virus (HPV), with increasing incidence world-wide. The aim of this retrospective study involving 102 patients was to determine the immunohistochemical appearance of HNE-protein adducts as a potential biomarker of lipid peroxidation in squamous cell carcinoma of the oropharynx. The HNE-protein adducts were detected in almost all tumor samples and in the surrounding non-tumorous tissue, while we found that HNE is differentially distributed in squamous cell carcinomas in dependence of clinical stage and histological grading of these tumors. Namely, the level of HNE-immunopositivity was increased in comparison to the normal oropharyngeal epithelium in well- and in moderately-differentiated squamous cell carcinoma, while it was decreasing in poorly differentiated carcinomas and in advanced stages of cancer. However, more malignant and advanced cancer was associated with the increase of HNE in surrounding, normal tissue. This study confirmed the onset of lipid peroxidation, generating HNE-protein adducts that can be used as a valuable bioactive marker of carcinogenesis in squamous cell carcinoma of the oropharynx, as well as indicating involvement of HNE in pathophysiological changes of the non-malignant tissue in the vicinity of cancer.
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Affiliation(s)
- Antonia Jakovčević
- Clinical Hospital Centre Zagreb, Clinical Department of Pathology and Cytology, School of Medicine, University of Zagreb, Kispaticeva 12, 10000 Zagreb, Croatia;
- Correspondence: ; Tel.: +385-123-880-89
| | - Kamelija Žarković
- Clinical Hospital Centre Zagreb, Clinical Department of Pathology and Cytology, School of Medicine, University of Zagreb, Kispaticeva 12, 10000 Zagreb, Croatia;
| | - Danica Jakovčević
- Department of Pathology, Clinical Hospital “Sv. Duh”, Ul. Sveti Duh 64, 10000 Zagreb, Croatia;
| | - Zoran Rakušić
- Department of Oncology, University Hospital Centre Zagreb, Kispaticeva 12, 10000 Zagreb, Croatia;
| | - Drago Prgomet
- Clinic for Ear, Nose and Throat Diseases and Head and Neck Surgeries, University Hospital Center Zagreb, Kispaticeva 12, 10000 Zagreb, Croatia;
| | - Georg Waeg
- Institute of Molecular Biosciences, Karl Franzens University, Humboldtstrasse 50, A-8010 Graz, Austria;
| | - Suzana Borović Šunjić
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Bijenička cesta 54, 10000 Zagreb, Croatia; (S.B.Š.); (N.Ž.)
| | - Neven Žarković
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Bijenička cesta 54, 10000 Zagreb, Croatia; (S.B.Š.); (N.Ž.)
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Vázquez J, Grillitsch K, Daum G, Mas A, Beltran G, Torija MJ. The role of the membrane lipid composition in the oxidative stress tolerance of different wine yeasts. Food Microbiol 2019; 78:143-154. [DOI: 10.1016/j.fm.2018.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 04/16/2018] [Accepted: 10/05/2018] [Indexed: 12/21/2022]
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Santomartino R, Camponeschi I, Polo G, Immesi A, Rinaldi T, Mazzoni C, Brambilla L, Bianchi MM. The hypoxic transcription factor KlMga2 mediates the response to oxidative stress and influences longevity in the yeast Kluyveromyces lactis. FEMS Yeast Res 2019; 19:5365995. [DOI: 10.1093/femsyr/foz020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/26/2019] [Indexed: 12/17/2022] Open
Abstract
ABSTRACT
Hypoxia is defined as the decline of oxygen availability, depending on environmental supply and cellular consumption rate. The decrease in O2 results in reduction of available energy in facultative aerobes. The response and/or adaptation to hypoxia and other changing environmental conditions can influence the properties and functions of membranes by modifying lipid composition. In the yeast Kluyveromyces lactis, the KlMga2 gene is a hypoxic regulatory factor for lipid biosynthesis—fatty acids and sterols—and is also involved in glucose signaling, glucose catabolism and is generally important for cellular fitness.
In this work we show that, in addition to the above defects, the absence of the KlMGA2 gene caused increased resistance to oxidative stress and extended lifespan of the yeast, associated with increased expression levels of catalase and SOD genes. We propose that KlMga2 might also act as a mediator of the oxidative stress response/adaptation, thus revealing connections among hypoxia, glucose signaling, fatty acid biosynthesis and ROS metabolism in K. lactis.
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Affiliation(s)
- Rosa Santomartino
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Ilaria Camponeschi
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Germano Polo
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Alessio Immesi
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Teresa Rinaldi
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Cristina Mazzoni
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Luca Brambilla
- Department Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Michele M Bianchi
- Department Biology and Biotechnology C. Darwin, University of Roma Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
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Xiong Q, Hu LX, Liu YS, Wang TT, Ying GG. New insight into the toxic effects of chloramphenicol and roxithromycin to algae using FTIR spectroscopy. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 207:197-207. [PMID: 30584953 DOI: 10.1016/j.aquatox.2018.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/30/2018] [Accepted: 12/19/2018] [Indexed: 05/21/2023]
Abstract
Antibiotics have been frequently detected in the aquatic environment, and they may affect aquatic organisms such as algae. Here we investigated toxicity of chloramphenicol (CAP) and roxithromycin (ROX) on four species of green algae (Pseudokirchneriella subcapitata, Scenedesmus quadricauda, Scenedesmus obliquus, and Scenedesmus acuminatus) at biochemical level by Fourier transform infrared spectroscopy (FTIR). The results revealed that both CAP and ROX had negative effects on algal growth and caused alterations of biochemical components. The toxic effects varied among the four algal species and S. acuminatus was found to be less sensitive than the other three species to the antibiotics. Even with similar mechanism of action, ROX displayed more adverse effects to algae than CAP. Both antibiotics could affect algae by inhibiting fatty acid synthesis and promoting protein and DNA aggregation, thus leading to accumulation of lipid peroxidation products, increment of the loose β-sheet structure protein and transformation of B-DNA to Z-DNA. The findings from this study revealed the toxic mechanism of antibiotics to algae at the biochemical level.
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Affiliation(s)
- Qian Xiong
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Xin Hu
- The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - You-Sheng Liu
- The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Tuan-Tuan Wang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guang-Guo Ying
- The Environmental Research Institute, MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China.
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Špoljarić Maronić D, Štolfa Čamagajevac I, Horvatić J, Žuna Pfeiffer T, Stević F, Žarković N, Waeg G, Jaganjac M. S-metolachlor promotes oxidative stress in green microalga Parachlorella kessleri - A potential environmental and health risk for higher organisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:41-49. [PMID: 29751315 DOI: 10.1016/j.scitotenv.2018.04.433] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/19/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
The estimation of the toxic influences of herbicide products on non-target aquatic organisms is essential for evaluation of environmental contamination. We assessed the effects of the herbicide S-metolachlor (S-MET) on unicellular green microalga Parachlorella kessleri during 4-72 in vitro exposure to concentrations in the range 2-200μg/L. The results have shown that S-MET had a significant effect on algae, even in doses 10 and 20 times lower than the EC50 values obtained for P. kessleri (EC50-72h=1090μg/L). It generates reactive oxygen species in algae, decreases their growth and photosynthetic pigment concentration, changes their ultrastructure and alters the cellular antioxidant defence capacities. The levels of protein adducts with the reactive aldehyde 4-hydroxy-2-nonenal (HNE), the end-product of lipid peroxidation, were significantly elevated in S-MET treated cells revealing the insufficient effectiveness of P. kessleri antioxidant mechanisms and persistent lipid peroxidation. Since algae are fundamental aquatic food component, the damaged algal cells, still capable of dividing while having persistently increased content of HNE upon S-MET contamination could represent an important environmental toxic factor that might further affect higher organisms in the food chain.
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Affiliation(s)
- Dubravka Špoljarić Maronić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Ivna Štolfa Čamagajevac
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Janja Horvatić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Tanja Žuna Pfeiffer
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Filip Stević
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Neven Žarković
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Bijenicka 54, HR-10000 Zagreb, Croatia.
| | - Georg Waeg
- University of Graz, Institute of Molecular Biosciences, Humboldtstraße 50, AT-8010 Graz, Austria.
| | - Morana Jaganjac
- Rudjer Boskovic Institute, Laboratory for Oxidative Stress, Bijenicka 54, HR-10000 Zagreb, Croatia; Anti Doping Lab Qatar, Life Science and Research Division, Sports City Road, P.O. Box 27775, Doha, Qatar.
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9
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Lou W, Ting HC, Reynolds CA, Tyurina YY, Tyurin VA, Li Y, Ji J, Yu W, Liang Z, Stoyanovsky DA, Anthonymuthu TS, Frasso MA, Wipf P, Greenberger JS, Bayır H, Kagan VE, Greenberg ML. Genetic re-engineering of polyunsaturated phospholipid profile of Saccharomyces cerevisiae identifies a novel role for Cld1 in mitigating the effects of cardiolipin peroxidation. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:1354-1368. [PMID: 29935382 PMCID: PMC6641546 DOI: 10.1016/j.bbalip.2018.06.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/11/2018] [Accepted: 06/14/2018] [Indexed: 01/18/2023]
Abstract
Cardiolipin (CL) is a unique phospholipid localized almost exclusively within the mitochondrial membranes where it is synthesized. Newly synthesized CL undergoes acyl remodeling to produce CL species enriched with unsaturated acyl groups. Cld1 is the only identified CL-specific phospholipase in yeast and is required to initiate the CL remodeling pathway. In higher eukaryotes, peroxidation of CL, yielding CLOX, has been implicated in the cellular signaling events that initiate apoptosis. CLOX can undergo enzymatic hydrolysis, resulting in the release of lipid mediators with signaling properties. Our previous findings suggested that CLD1 expression is upregulated in response to oxidative stress, and that one of the physiological roles of CL remodeling is to remove peroxidized CL. To exploit the powerful yeast model to study functions of CLD1 in CL peroxidation, we expressed the H. brasiliensis Δ12-desaturase gene in yeast, which then synthesized poly unsaturated fatty acids(PUFAs) that are incorporated into CL species. Using LC-MS based redox phospholipidomics, we identified and quantified the molecular species of CL and other phospholipids in cld1Δ vs. WT cells. Loss of CLD1 led to a dramatic decrease in chronological lifespan, mitochondrial membrane potential, and respiratory capacity; it also resulted in increased levels of mono-hydroperoxy-CLs, particularly among the highly unsaturated CL species, including tetralinoleoyl-CL. In addition, purified Cld1 exhibited a higher affinity for CLOX, and treatment of cells with H2O2 increased CLD1 expression in the logarithmic growth phase. These data suggest that CLD1 expression is required to mitigate oxidative stress. The findings from this study contribute to our overall understanding of CL remodeling and its role in mitigating oxidative stress.
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Affiliation(s)
- Wenjia Lou
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Hsiu-Chi Ting
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Christian A Reynolds
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Yulia Y Tyurina
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States; Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Vladimir A Tyurin
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States; Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Yiran Li
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Jiajia Ji
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Wenxi Yu
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Zhuqing Liang
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States
| | - Detcho A Stoyanovsky
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Tamil S Anthonymuthu
- Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, United States; Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Michael A Frasso
- Chemistry, University of Pittsburgh, Pittsburgh, PA, United States
| | - Peter Wipf
- Chemistry, University of Pittsburgh, Pittsburgh, PA, United States
| | - Joel S Greenberger
- Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Hülya Bayır
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States; Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, United States; Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Valerian E Kagan
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States; Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, United States; Chemistry, University of Pittsburgh, Pittsburgh, PA, United States; Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, United States; Laboratory of Navigational Redox Lipidomics,and Department of Human Pathology, IM Sechenov Moscow State Medical University, Moscow, Russian Federation.
| | - Miriam L Greenberg
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States.
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Sun XM, Ren LJ, Bi ZQ, Ji XJ, Zhao QY, Jiang L, Huang H. Development of a cooperative two-factor adaptive-evolution method to enhance lipid production and prevent lipid peroxidation in Schizochytrium sp. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:65. [PMID: 29563968 PMCID: PMC5851066 DOI: 10.1186/s13068-018-1065-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/02/2018] [Indexed: 05/06/2023]
Abstract
BACKGROUND Schizochytrium sp. is a marine microalga with great potential as a promising sustainable source of lipids rich in docosahexaenoic acid (DHA). This organism's lipid accumulation machinery can be induced by various stress conditions, but this stress induction usually comes at the expense of lower biomass in industrial fermentations. Moreover, oxidative damage induced by various environmental stresses can result in the peroxidation of lipids, and especially polyunsaturated fatty acids, which causes unstable DHA production, but is often ignored in fermentation processes. Therefore, it is urgent to develop new production strains that not only have a high DHA production capacity, but also possess strong antioxidant defenses. RESULTS Adaptive laboratory evolution (ALE) is an effective method for the development of beneficial phenotypes in industrial microorganisms. Here, a novel cooperative two-factor ALE strategy based on concomitant low temperature and high salinity was applied to improve the production capacity of Schizochytrium sp. Low-temperature conditions were used to improve the DHA content, and high salinity was applied to stimulate lipid accumulation and enhance the antioxidative defense systems of Schizochytrium sp. After 30 adaptation cycles, a maximal cell dry weight of 126.4 g/L and DHA yield of 38.12 g/L were obtained in the endpoint strain ALE-TF30, which was 27.42 and 57.52% higher than parental strain, respectively. Moreover, the fact that ALE-TF30 had the lowest concentrations of reactive oxygen species and malondialdehyde among all strains indicated that lipid peroxidation was greatly suppressed by the evolutionary process. Accordingly, the ALE-TF30 strain exhibited an overall increase of gene expression levels of antioxidant enzymes and polyketide synthases compared to the parental strain. CONCLUSION This study provides important clues on how to overcome the negative effects of lipid peroxidation on DHA production in Schizochytrium sp. Taken together, the cooperative two-factor ALE process can not only increase the accumulation of lipids rich in DHA, but also prevent the loss of produced lipid caused by lipid peroxidation. The strategy proposed here may provide a new and alternative direction for the industrial cultivation of oil-producing microalgae.
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Affiliation(s)
- Xiao-Man Sun
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Lu-Jing Ren
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - Zhi-Qian Bi
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Xiao-Jun Ji
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - Quan-Yu Zhao
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
| | - Ling Jiang
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
| | - He Huang
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816 People’s Republic of China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009 People’s Republic of China
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11
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Rodrigues C, Tartaro Bujak I, Mihaljević B, Soveral G, Cipak Gasparovic A. Yeast aquaporin regulation by 4-hydroxynonenal is implicated in oxidative stress response. IUBMB Life 2017; 69:355-362. [PMID: 28337841 DOI: 10.1002/iub.1624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/03/2017] [Indexed: 01/03/2023]
Abstract
Reactive oxygen species, especially hydrogen peroxide (H2 O2 ), contribute to functional molecular impairment and cellular damage, but also are necessary in normal cellular metabolism, and in low doses play stimulatory role in cell proliferation and stress resistance. In parallel, reactive aldehydes such as 4-hydroxynonenal (HNE), are lipid peroxidation breakdown products which also contribute to regulation of numerous cellular processes. Recently, channeling of H2 O2 by some mammalian aquaporin isoforms has been reported and suggested to contribute to aquaporin involvement in cancer malignancies, although the mechanism by which these membrane water channels are implicated in oxidative stress is not clear. In this study, two yeast models with increased levels of membrane polyunsaturated fatty acids (PUFAs) and aquaporin AQY1 overexpression, respectively, were used to evaluate their interplay in cell's oxidative status. In particular, the aim of the study was to investigate if HNE accumulation could affect aquaporin function with an outcome in oxidative stress response. The data showed that induction of aquaporin expression by PUFAs results in increased water permeability in yeast membranes and that AQY1 activity is impaired by HNE. Moreover, AQY1 expression increases cellular sensitivity to oxidative stress by facilitating H2 O2 influx. On the other hand, AQY1 expression has no influence on the cellular antioxidant GSH levels and catalase activity. These results strongly suggest that aquaporins are important players in oxidative stress response and could contribute to regulation of cellular processes by regulation of H2 O2 influx. © 2017 IUBMB Life, 69(5):355-362, 2017.
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Affiliation(s)
- Claudia Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal.,Department of Biochemistry and Human Biology, Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | | | | | - Graça Soveral
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal.,Department of Biochemistry and Human Biology, Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
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Acrolein-Induced Oxidative Stress and Cell Death Exhibiting Features of Apoptosis in the Yeast Saccharomyces cerevisiae Deficient in SOD1. Cell Biochem Biophys 2016; 71:1525-36. [PMID: 25395196 PMCID: PMC4449388 DOI: 10.1007/s12013-014-0376-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The yeast Saccharomyces cerevisiae is a useful eukaryotic model to study the toxicity of acrolein, an important environmental toxin and endogenous product of lipid peroxidation. The study was aimed at elucidation of the cytotoxic effect of acrolein on the yeast deficient in SOD1, Cu, Zn-superoxide dismutase which is hypersensitive to aldehydes. Acrolein generated within the cell from its precursor allyl alcohol caused growth arrest and cell death of the yeast cells. The growth inhibition involved an increase in production of reactive oxygen species and high level of protein carbonylation. DNA condensation and fragmentation, exposition of phosphatidylserine at the cell surface as well as decreased dynamic of actin microfilaments and mitochondria disintegration point to the induction of apoptotic-type cell death besides necrotic cell death.
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13
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Johansson M, Chen X, Milanova S, Santos C, Petranovic D. PUFA-induced cell death is mediated by Yca1p-dependent and -independent pathways, and is reduced by vitamin C in yeast. FEMS Yeast Res 2016; 16:fow007. [DOI: 10.1093/femsyr/fow007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2016] [Indexed: 12/21/2022] Open
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14
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Zhang M, Liu Z, Yu Q, Mao J, Zhang B, Xing L, Li M. Deletion of genes encoding fatty acid desaturases leads to alterations in stress sensitivity in Pichia pastoris. FEMS Yeast Res 2015; 15:fov020. [DOI: 10.1093/femsyr/fov020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2015] [Indexed: 12/13/2022] Open
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15
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Aslan A, Can Mİ, Boydak D. Anti-oxidant effects of pomegranate juice on Saccharomyces cerevisiae cell growth. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2014; 11:14-8. [PMID: 25392575 DOI: 10.4314/ajtcam.v11i4.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Pomegranate juice has a number of positive effects on both human and animal subjects. MATERIAL AND METHODS Four groups were used in this study. i: Control group, ii: H2O2 group, iii: Pomegranate juice (PJ) group and iv: PJ + H2O2 group. Following the sterilization method for pomegranate juice (10%) and H2O2 (6% v/v), Saccharomyces cerevisiae cultures were added and the cultivation incubated at 35°C for 72 hours. Fatty acids and vitamin concentrations were measured using HPLC and GC and the total protein bands profile were determined by SDS-PAGE. RESULTS According to our results statistically significant differences have been determined among the study groups in terms of fatty acids and vitamin (p<0,05). Fatty acid synthesis, vitamin control and cell density increased in groups to which PJ was given in comparison with the control group (p<0,05). Pomegranate juice increased vitamins, fatty acids and total protein expression in Saccharomyces cerevisiae in comparison with the control. CONCLUSION Pomegranate juice has a positive effect on fatty acid, vitamin and protein synthesis by Saccharomyces cerevisiae. Accordingly, we believe that it has significantly decreased oxidative damage thereby making a positive impact on yeast development.
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Affiliation(s)
- Abdullah Aslan
- Firat University, Faculty of Science, Department of Biology, Elazığ-TURKEY
| | | | - Didem Boydak
- Firat University, Faculty of Science, Department of Biology, Elazığ-TURKEY
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16
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Transcriptional and antioxidative responses to endogenous polyunsaturated fatty acid accumulation in yeast. Mol Cell Biochem 2014; 399:27-37. [PMID: 25280400 DOI: 10.1007/s11010-014-2229-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 09/27/2014] [Indexed: 01/06/2023]
Abstract
Pathophysiology of polyunsaturated fatty acids (PUFAs) is associated with aberrant lipid and oxygen metabolism. In particular, under oxidative stress, PUFAs are prone to autocatalytic degradation via peroxidation, leading to formation of reactive aldehydes with numerous potentially harmful effects. However, the pathological and compensatory mechanisms induced by lipid peroxidation are very complex and not sufficiently understood. In our study, we have used yeast capable of endogenous PUFA synthesis in order to understand the effects triggered by PUFA accumulation on cellular physiology of a eukaryotic organism. The mechanisms induced by PUFA accumulation in S. cerevisiae expressing Hevea brasiliensis Δ12-fatty acid desaturase include down-regulation of components of electron transport chain in mitochondria as well as up-regulation of pentose-phosphate pathway and fatty acid β-oxidation at the transcriptional level. Interestingly, while no changes were observed at the transcriptional level, activities of two important enzymatic antioxidants, catalase and glutathione-S-transferase, were altered in response to PUFA accumulation. Increased intracellular glutathione levels further suggest an endogenous oxidative stress and activation of antioxidative defense mechanisms under conditions of PUFA accumulation. Finally, our data suggest that PUFA in cell membrane causes metabolic changes which in turn lead to adaptation to endogenous oxidative stress.
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17
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Plancke C, Vigeolas H, Höhner R, Roberty S, Emonds-Alt B, Larosa V, Willamme R, Duby F, Onga Dhali D, Thonart P, Hiligsmann S, Franck F, Eppe G, Cardol P, Hippler M, Remacle C. Lack of isocitrate lyase in Chlamydomonas leads to changes in carbon metabolism and in the response to oxidative stress under mixotrophic growth. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2014; 77:404-17. [PMID: 24286363 DOI: 10.1111/tpj.12392] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 10/30/2013] [Accepted: 11/21/2013] [Indexed: 05/10/2023]
Abstract
Isocitrate lyase is a key enzyme of the glyoxylate cycle. This cycle plays an essential role in cell growth on acetate, and is important for gluconeogenesis as it bypasses the two oxidative steps of the tricarboxylic acid (TCA) cycle in which CO₂ is evolved. In this paper, a null icl mutant of the green microalga Chlamydomonas reinhardtii is described. Our data show that isocitrate lyase is required for growth in darkness on acetate (heterotrophic conditions), as well as for efficient growth in the light when acetate is supplied (mixotrophic conditions). Under these latter conditions, reduced acetate assimilation and concomitant reduced respiration occur, and biomass composition analysis reveals an increase in total fatty acid content, including neutral lipids and free fatty acids. Quantitative proteomic analysis by ¹⁴N/¹⁵N labelling was performed, and more than 1600 proteins were identified. These analyses reveal a strong decrease in the amounts of enzymes of the glyoxylate cycle and gluconeogenesis in parallel with a shift of the TCA cycle towards amino acid synthesis, accompanied by an increase in free amino acids. The decrease of the glyoxylate cycle and gluconeogenesis, as well as the decrease in enzymes involved in β-oxidation of fatty acids in the icl mutant are probably major factors that contribute to remodelling of lipids in the icl mutant. These modifications are probably responsible for the elevation of the response to oxidative stress, with significantly augmented levels and activities of superoxide dismutase and ascorbate peroxidase, and increased resistance to paraquat.
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Affiliation(s)
- Charlotte Plancke
- Genetics of Microorganisms, Institute of Botany, B22, University of Liege, 4000, Liege, Belgium
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18
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Schreck E, Laplanche C, Le Guédard M, Bessoule JJ, Austruy A, Xiong T, Foucault Y, Dumat C. Influence of fine process particles enriched with metals and metalloids on Lactuca sativa L. leaf fatty acid composition following air and/or soil-plant field exposure. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 179:242-9. [PMID: 23694728 DOI: 10.1016/j.envpol.2013.04.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 04/17/2013] [Accepted: 04/18/2013] [Indexed: 05/26/2023]
Abstract
We investigate the effect of both foliar and root uptake of a mixture of metal(loid)s on the fatty acid composition of plant leaves. Our objectives are to determine whether both contamination pathways have a similar effect and whether they interact. Lactuca sativa L. were exposed to fine process particles enriched with metal(loid)s in an industrial area. Data from a first experiment were used to conduct an exploratory statistical analysis which findings were successfully cross-validated by using the data from a second one. Both foliar and root pathways impact plant leaf fatty acid composition and do not interact. Z index (dimensionless quantity), weighted product of fatty acid concentration ratios was built up from the statistical analyses. It provides new insights on the mechanisms involved in metal uptake and phytotoxicity. Plant leaf fatty acid composition is a robust and fruitful approach to detect and understand the effects of metal(loid) contamination on plants.
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Affiliation(s)
- Eva Schreck
- INP, UPS, EcoLab-Laboratoire Ecologie Fonctionnelle et Environnement, ENSAT, Université de Toulouse, Avenue de l'Agrobiopole, F-31326 Castanet Tolosan, France
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19
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Alterations in growth and fatty acid profiles under stress conditions of Hansenula polymorpha defective in polyunsaturated fatty acid synthesis. Mol Biol Rep 2013; 40:4935-45. [PMID: 23645092 DOI: 10.1007/s11033-013-2594-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 04/29/2013] [Indexed: 10/26/2022]
Abstract
Using chemical mutagenesis, mutants of Hansenula polymorpha that were defective in fatty acid synthesis were selected based on their growth requirements on saturated fatty acid mixtures. One mutant (S7) was incapable of synthesizing polyunsaturated fatty acids (PUFA), linoleic and α-linolenic acids. A genetic analysis demonstrated that the S7 strain had a double lesion affecting fatty acid synthesis and Δ(12)-desaturation. A segregant with a defect in PUFA synthesis (H69-2C) displayed normal growth characteristics in the temperature range of 20-42 °C through a modulation of the cellular fatty acid composition. Compared with the parental strain, this yeast mutant had increased sensitivity at low and high temperatures (15 and 48 °C, respectively) with an increased tolerance to oxidative stress. The responses to ethanol stress were similar for the parental and PUFA-defective strains. Myristic acid was also determined to play an essential role in the cell growth of H. polymorpha. These findings suggest that both the type of cellular fatty acids and the composition of fatty acids might be involved in the stress responsive mechanisms in this industrially important yeast.
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20
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Pathophysiological relevance of aldehydic protein modifications. J Proteomics 2013; 92:239-47. [PMID: 23438936 DOI: 10.1016/j.jprot.2013.02.004] [Citation(s) in RCA: 287] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 01/30/2013] [Accepted: 02/02/2013] [Indexed: 11/23/2022]
Abstract
There is growing body of evidence that oxidative stress, i.e. excess in production of reactive oxygen species, can lead to covalent modification of proteins with bioactive aldehydes that are mostly produced under lipid peroxidation of polyunsaturated fatty acids. Thus generated reactive aldehydes are considered as second messengers of free radicals because they react with major bioactive macromolecules, in particular with various humoral and cellular proteins changing their structure and functions. Therefore, the aldehydic-protein adducts, in particular those involving 4-hydroxy-2-nonenal, malondialdehyde and acrolein can be valuable biomarkers of numerous pathophysiological processes. The development of immunochemical methods is increasing the possibilities to study such non-enzymatic protein modifications, on the one hand, while on the other hand the increase of knowledge on bioactivities of the aldehydes and their protein adducts might lead to better prevention, diagnosis and treatments of pathophysiological processes associated with lipid peroxidation and oxidative stress in general. This article is part of a Special Issue entitled: Posttranslational Protein modifications in biology and Medicine.
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21
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Gasparovic AC, Jaganjac M, Mihaljevic B, Sunjic SB, Zarkovic N. Assays for the measurement of lipid peroxidation. Methods Mol Biol 2013; 965:283-296. [PMID: 23296666 DOI: 10.1007/978-1-62703-239-1_19] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Physical and emotional stress, metabolic alterations, carcinogenesis or inflammation are conditions that can trigger oxidative stress, which is defined as a balance shift of redox reactions towards oxidation, resulting in the increase of reactive oxygen species (ROS). ROS are continuously formed in small quantities during the normal metabolism of cell, however the overproduction of ROS is cytotoxic and damages macromolecules (DNA, proteins, sugars and lipids). Polyunsaturated fatty acids (PUFAs) that are esterified in membrane or storage lipids are subject to ROS-induced peroxidation resulting in the destruction of biomembranes. Final products of lipid peroxidation (LPO) are reactive aldehydes that are relatively stable and may diffuse far from the initial site of oxidative injury and act as second messengers or free radicals. The difference between physiological and pathological oxidative stress is often the occurrence of LPO and its final toxic products. In this chapter, two classes of methods for measurement of LPO are described. The first include assays for detection of LPO at the organismal level, while the second include molecular and cellular assays that reveal the mechanistic effects of LPO on the function, morphology and viability of the cells.
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22
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de Freitas JM, Bravim F, Buss DS, Lemos EM, Fernandes AAR, Fernandes PM. Influence of cellular fatty acid composition on the response ofSaccharomyces cerevisiaeto hydrostatic pressure stress. FEMS Yeast Res 2012; 12:871-8. [DOI: 10.1111/j.1567-1364.2012.00836.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/13/2012] [Accepted: 07/26/2012] [Indexed: 12/27/2022] Open
Affiliation(s)
- Jéssica M. de Freitas
- Núcleo de Biotecnologia; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
| | - Fernanda Bravim
- Núcleo de Biotecnologia; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
| | - David S. Buss
- Núcleo de Biotecnologia; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
| | - Elenice M. Lemos
- Núcleo de Doenças Infecciosas; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
| | - A. Alberto R. Fernandes
- Núcleo de Biotecnologia; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
| | - Patricia M.B. Fernandes
- Núcleo de Biotecnologia; Centro de Ciências da Saúde; Universidade Federal do Espírito Santo; Vitória; ES; Brazil
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Abstract
Oxidative damage to cellular constituents has frequently been associated with aging in a wide range of organisms. The power of yeast genetics and biochemistry has provided the opportunity to analyse in some detail how reactive oxygen and nitrogen species arise in cells, how cells respond to the damage that these reactive species cause, and to begin to dissect how these species may be involved in the ageing process. This chapter reviews the major sources of reactive oxygen species that occur in yeast cells, the damage they cause and how cells sense and respond to this damage.
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Affiliation(s)
- May T Aung-Htut
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, 2052, Australia,
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Buchhaupt M, Guder JC, Etschmann MMW, Schrader J. Synthesis of green note aroma compounds by biotransformation of fatty acids using yeast cells coexpressing lipoxygenase and hydroperoxide lyase. Appl Microbiol Biotechnol 2012; 93:159-68. [PMID: 21789493 DOI: 10.1007/s00253-011-3482-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 07/01/2011] [Accepted: 07/13/2011] [Indexed: 10/18/2022]
Abstract
Green notes are substances that characterize the aroma of freshly cut grass, cucumbers, green apples, and foliage. In plants, they are synthesized by conversion of linolenic or linoleic acid via the enzymes lipoxygenase (LOX) and hydroperoxide lyase (HPL) to short-chained aldehydes. Current processes for production of natural green notes rely on plant homogenates as enzyme sources but are limited by low enzyme concentration and low specificity. In an alternative approach, soybean LOX2 and watermelon HPL were overexpressed in Saccharomyces cerevisiae. After optimization of the expression constructs, a yeast strain coexpressing LOX and HPL was applied in whole cell biotransformation experiments. Whereas addition of linolenic acid to growing cultures of this strain yielded no products, we were able to identify high green note concentrations when resting cells were used. The primary biotransformation product was 3(Z)-hexenal, a small amount of which isomerized to 2(E)-hexenal. Furthermore, both aldehydes were reduced to the corresponding green note alcohols by endogenous yeast alcohol dehydrogenase to some extent. As the cosolvent ethanol was the source of reducing equivalents for green note alcohol formation, the hexenal/hexenol ratio could be influenced by the use of alternative cosolvents. Further investigations to identify the underlying mechanism of the rather low biocatalyst stability revealed a high toxicity of linolenic acid to yeast cells. The whole cell catalyst containing LOX and HPL enzyme activity described here can be a promising approach towards a highly efficient microbial green note synthesis process.
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Affiliation(s)
- Markus Buchhaupt
- Biochemical Engineering, DECHEMA eV, Karl Winnacker-Institut, Frankfurt, Germany.
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25
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Spoljaric D, Cipak A, Horvatic J, Andrisic L, Waeg G, Zarkovic N, Jaganjac M. Endogenous 4-hydroxy-2-nonenal in microalga Chlorella kessleri acts as a bioactive indicator of pollution with common herbicides and growth regulating factor of hormesis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2011; 105:552-558. [PMID: 21937009 DOI: 10.1016/j.aquatox.2011.08.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 08/06/2011] [Accepted: 08/16/2011] [Indexed: 05/31/2023]
Abstract
Oxidative stress, i.e. excessive production of reactive oxygen species (ROS), leads to lipid peroxidation and to formation of reactive aldehydes (e.g. 4-hydroxy-2-nonenal; HNE), which act as second messengers of free radicals. It was previously shown that herbicides can induce ROS production in algal cells. In the current paper, the unicellular green microalga Chlorella kessleri was used to study the effect of two herbicides (S-metolachlor and terbuthylazine) and hydrogen peroxide (H(2)O(2)) on oxidative stress induction, HNE formation, chlorophyll content and the cell growth. Production of HNE was detected in this study for the first time in the cells of unicellular green algae using the antibody specific for the HNE-histidine adducts revealing the HNE-histidine adducts even in untreated, control C. kessleri. Exposure of algal cells to herbicides and H(2)O(2) increased the ROS production, modifying production of HNE. Namely, 4h upon treatment the levels of HNE-histidine conjugates were below controls. However, their amount increased afterwards. The increase of HNE levels in algae was followed by their increased growth rate, as was previously described for human carcinoma cells. Hence, changes in the cellular HNE content upon herbicide treatment inducing lipid oxidative stress and alterations in cellular growth rate of C. kessleri resemble adaptation of malignant cells to the HNE treatment. Therefore, as an addition to the standard toxicity tests, the evaluation of HNE-protein adducts in C. kessleri might indicate environmental pollution with lipid peroxidation-inducing herbicides. Finally, C. kessleri might be a convenient experimental model to further study cellular hormetic adaptation to oxidative stress-derived aldehydes.
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Affiliation(s)
- Dubravka Spoljaric
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.
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Hill S, Hirano K, Shmanai VV, Marbois BN, Vidovic D, Bekish AV, Kay B, Tse V, Fine J, Clarke CF, Shchepinov MS. Isotope-reinforced polyunsaturated fatty acids protect yeast cells from oxidative stress. Free Radic Biol Med 2011; 50:130-8. [PMID: 20955788 PMCID: PMC3014413 DOI: 10.1016/j.freeradbiomed.2010.10.690] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Revised: 10/11/2010] [Accepted: 10/11/2010] [Indexed: 01/08/2023]
Abstract
The facile abstraction of bis-allylic hydrogens from polyunsaturated fatty acids (PUFAs) is the hallmark chemistry responsible for initiation and propagation of autoxidation reactions. The products of these autoxidation reactions can form cross-links to other membrane components and damage proteins and nucleic acids. We report that PUFAs deuterated at bis-allylic sites are much more resistant to autoxidation reactions, because of the isotope effect. This is shown using coenzyme Q-deficient Saccharomyces cerevisiae coq mutants with defects in the biosynthesis of coenzyme Q (Q). Q functions in respiratory energy metabolism and also functions as a lipid-soluble antioxidant. Yeast coq mutants incubated in the presence of the PUFA α-linolenic or linoleic acid exhibit 99% loss of colony formation after 4h, demonstrating a profound loss of viability. In contrast, coq mutants treated with monounsaturated oleic acid or with one of the deuterated PUFAs, 11,11-D(2)-linoleic or 11,11,14,14-D(4)-α-linolenic acid, retain viability similar to wild-type yeast. Deuterated PUFAs also confer protection to wild-type yeast subjected to heat stress. These results indicate that isotope-reinforced PUFAs are stabilized compared to standard PUFAs, and they protect coq mutants and wild-type yeast cells against the toxic effects of lipid autoxidation products. These findings suggest new approaches to controlling ROS-inflicted cellular damage and oxidative stress.
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Affiliation(s)
- Shauna Hill
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Kathleen Hirano
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Vadim V. Shmanai
- Institute of Physical Organic Chemistry of the National Academy of Sciences of Belarus, 13 Surganova Street, 220072 Belarus
| | - Beth N. Marbois
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Dragoslav Vidovic
- Department of Chemistry, Oxford University, South Parks Road, Oxford OX1 3QR, UK
| | - Andrei V. Bekish
- Department of Chemistry, Belarussian State University, Minsk 220030 Belarus
| | - Bradley Kay
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Vincent Tse
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Jonathan Fine
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Catherine F. Clarke
- Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
- To whom correspondence should be addressed: Catherine F. Clarke, UCLA Department of Chemistry and Biochemistry, 607 Charles E. Young Dr. E., Los Angeles CA 90095 Tel (310) 825-0771; Fax (310) 206-5213; ; and Mikhail S. Shchepinov, Retrotope, Inc. 12133 Foothill Lane, Los Altos Hills, CA 94022, USA (650)-917-9256; Fax (650)-917-9255;
| | - Mikhail S. Shchepinov
- Retrotope, Inc. 12133 Foothill Lane, Los Altos Hills, CA 94022, USA
- To whom correspondence should be addressed: Catherine F. Clarke, UCLA Department of Chemistry and Biochemistry, 607 Charles E. Young Dr. E., Los Angeles CA 90095 Tel (310) 825-0771; Fax (310) 206-5213; ; and Mikhail S. Shchepinov, Retrotope, Inc. 12133 Foothill Lane, Los Altos Hills, CA 94022, USA (650)-917-9256; Fax (650)-917-9255;
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Heterologous production of polyunsaturated fatty acids in Saccharomyces cerevisiae causes a global transcriptional response resulting in reduced proteasomal activity and increased oxidative stress. Biotechnol J 2010; 6:343-56. [DOI: 10.1002/biot.201000316] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 11/02/2010] [Accepted: 11/10/2010] [Indexed: 11/07/2022]
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Obese and anorexic yeasts: Experimental models to understand the metabolic syndrome and lipotoxicity. Biochim Biophys Acta Mol Cell Biol Lipids 2010; 1801:222-9. [DOI: 10.1016/j.bbalip.2009.12.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2009] [Revised: 12/23/2009] [Accepted: 12/24/2009] [Indexed: 12/23/2022]
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Shamrock VJ, Lindsey GG. A compensatory increase in trehalose synthesis in response to desiccation stress in Saccharomyces cerevisiae cells lacking the heat shock protein Hsp12p. Can J Microbiol 2008; 54:559-68. [PMID: 18641702 DOI: 10.1139/w08-044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of HSP12 deletion on the response of yeast to desiccation was investigated. The Deltahsp12 strain was found to be more desiccation tolerant than the wild-type strain. Furthermore, the increased intracellular trehalose levels in the Deltahsp12 strain suggested that this strain compensated for the lack of Hsp12p synthesis by increasing trehalose synthesis, which facilitated increased desiccation tolerance. Results obtained from flow cytometry using the membrane exclusion dye propidium iodide suggested that Hsp12p helped maintain plasma membrane integrity during desiccation. Analysis of the oxidative loads experienced by the wild-type and Deltahsp12 strains showed that during mid-exponential phase, the increased trehalose levels present in the Deltahsp12 cells resulted in increased protection of these cells against reactive oxygen species compared with wild-type cells. During stationary phase, lower levels of reactive oxygen species reduction by reduced glutathione was enhanced in the wild-type strain, which displayed lower intracellular trehalose concentrations. Comparison of the tolerance of the wild-type and Deltahsp12 strains with applied oxidative stress showed that the Deltahsp12 strain was more tolerant to exogenously applied H2O2, which we attributed to the higher intracellular trehalose concentration. Flow cytometry demonstrated that Hsp12p played a role in maintaining plasma membrane integrity during applied oxidative stress.
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Affiliation(s)
- Vanessa J Shamrock
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag 7725, Rondebosch, Cape 7700, South Africa
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Current awareness on yeast. Yeast 2006. [DOI: 10.1002/yea.1319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kansu A, Kuloğlu Z, Demirçeken F, Girgin N. Autoantibodies in children with chronic hepatitis B infection and the influence of interferon alpha. TURKISH JOURNAL OF GASTROENTEROLOGY 2005; 56:3989-96. [PMID: 16249973 DOI: 10.1021/jf073272v] [Citation(s) in RCA: 165] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIMS One of the serious side effects of interferon-a (IFN) is the possible induction of autoimmunity. However, data concerning children with chronic hepatitis B (HBV) infection is limited with conflicting results. The aim of this study was to evaluate the frequency of autoantibody positivity in children with chronic HBV infection and to assess whether IFN treatment has any influence on exacerbation of serological or clinical parameters of autoimmunity. METHODS 61 children (32 female, mean age 7.5+/-3.8 years) were evaluated in two groups. Group I (29 patients) received 5 x 106 U/m2 IFN-a and group II (32 patients) 10 x 106 U/m2 IFN-a three times per week for six months. Autoantibody levels (anti-TPO, anti-Tg, AMA, ASMA, LKM-1, ANA, ds-DNA) and Ig G, A and M were analyzed before and after IFN treatment and 12 months after completion of therapy. RESULTS No significant difference in autoimmune antibody positivity rate was observed between the two groups when compared at the beginning of the study and at the end of IFN treatment separately. SMA positivity rate was shown to significantly increase in group I after treatment was completed (p<0.05). None of the patients positive for autoantibodies showed further laboratory or clinical signs of autoimmunity. Thyroid hormones were within normal range in patients positive for anti-thyroid antibodies; however, thyrotropin-releasing hormone (TRH) stimulation test revealed subclinical hypothyroidism. All antibodies disappeared 12 months after completion of therapy. Overall, autoantibody positivity, pre- and posttreatment, were 16.3% and 54%, respectively (p<0.05). Age, sex, hepatitis activity index (HAI) score, HBV load and the dose of IFN had no influence on autoantibody formation. Complete and sustained response rates were similar in children with and without autoantibody. CONCLUSIONS Autoantibody formation may occur in children with chronic HBV infection. IFN treatment leads to significant autoantibody formation, but this causes no organ dysfunction except for antithyroid antibodies associated with subclinical hypothyroidism. These results suggest that neither the presence of autoantibodies in choronic hepatitis B nor their development during IFN therapy is associated with severe autoimmune disorders in children with chronic HBV infection.
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Affiliation(s)
- Aydan Kansu
- School of Medicine, Department of Pediatrics, Division of Gastroenterology, Ankara University, Ankara, Turkey
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