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He D, Wu H, Jiang H, Zhang Z, Wang C, Wang D, Wei G. Screening of Selenium/Glutathione-Enriched Candida utilis and Its Anti-inflammatory and Antioxidant Activities in Mice. Biol Trace Elem Res 2024; 202:2786-2796. [PMID: 37773483 DOI: 10.1007/s12011-023-03882-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/22/2023] [Indexed: 10/01/2023]
Abstract
This study aimed to screen a mutant of Candida utilis SE-172 with high selenite tolerance and glutathione (GSH) biosynthesis capability via 60Co γ-radiation mutagenesis to prepare selenium (Se)-enriched yeast. The maximal intracellular contents of GSH and organic Se of 22.94 mg/g and 1308.1 μg/g were obtained, respectively, under a batch culture of SE-172. The physiological mechanism underlying increased GSH and organic Se contents in Se/GSH-enriched C. utilis SE-172 was revealed based on assaying activities of γ-glutamylcysteine synthase (γ-GCS) involved in GSH biosynthesis and selenophosphate synthase (SPS) related to organic Se bioconversion, and by determining intracellular ATP and NADH contents and ATP/ADP and NADH/NAD+ ratios associated with energy supply and regeneration. Moreover, the effect of this selenized yeast on anti-inflammatory and antioxidant activities in mice with colitis was investigated. The supplementation of Se/GSH-enriched yeast decreased the dextran sodium sulfate-induced damage to colon tissues, reduced the expression of pro-inflammatory factors [interleukin (IL)-6, IL-1β, and tumor necrosis factor-α (TNF-α)] in serum, increased the antioxidant-related enzyme [superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px)] activities, and decreased the malondialdehyde content in colon. The Se/GSH-enriched C. utilis SE-172 showed potent anti-inflammatory and antioxidant activities in mice with colitis.
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Affiliation(s)
- Daohong He
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Huasheng Wu
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Huishu Jiang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Zhen Zhang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Chonglong Wang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Dahui Wang
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China
| | - Gongyuan Wei
- School of Biology and Basic Medical Sciences, Soochow University, 199# Ren'ai Road, Suzhou, 215123, People's Republic of China.
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He Q, Gong G, Wan T, Hu H, Yu P. An integrated transcriptomic and metabolic phenotype analysis to uncover the metabolic characteristics of a genetically engineered Candida utilis strain expressing δ-zein gene. Front Microbiol 2023; 14:1241462. [PMID: 37744922 PMCID: PMC10513430 DOI: 10.3389/fmicb.2023.1241462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction Candida utilis (C. utilis) has been extensively utilized as human food or animal feed additives. With its ability to support heterologous gene expression, C. utilis proves to be a valuable platform for the synthesis of proteins and metabolites that possess both high nutritional and economic value. However, there remains a dearth of research focused on the characteristics of C. utilis through genomic, transcriptomic and metabolic approaches. Methods With the aim of unraveling the molecular mechanism and genetic basis governing the biological process of C. utilis, we embarked on a de novo sequencing endeavor to acquire comprehensive sequence data. In addition, an integrated transcriptomic and metabolic phenotype analysis was performed to compare the wild-type C. utilis (WT) with a genetically engineered strain of C. utilis that harbors the heterologous δ-zein gene (RCT). Results δ-zein is a protein rich in methionine found in the endosperm of maize. The integrated analysis of transcriptomic and metabolic phenotypes uncovered significant metabolic diversity between the WT and RCT C. utilis. A total of 252 differentially expressed genes were identified, primarily associated with ribosome function, peroxisome activity, arginine and proline metabolism, carbon metabolism, and fatty acid degradation. In the experimental setup using PM1, PM2, and PM4 plates, a total of 284 growth conditions were tested. A comparison between the WT and RCT C. utilis demonstrated significant increases in the utilization of certain carbon source substrates by RCT. Gelatin and glycogen were found to be significantly utilized to a greater extent by RCT compared to WT. Additionally, in terms of sulfur source substrates, RCT exhibited significantly increased utilization of O-Phospho-L-Tyrosine and L-Methionine Sulfone when compared to WT. Discussion The introduction of δ-zein gene into C. utilis may lead to significant changes in the metabolic substrates and metabolic pathways, but does not weaken the activity of the strain. Our study provides new insights into the transcriptomic and metabolic characteristics of the genetically engineered C. utilis strain harboring δ-zein gene, which has the potential to advance the utilization of C. utilis as an efficient protein feed in agricultural applications.
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Affiliation(s)
- Qiburi He
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
- Inner Mongolia Academy of Agricultural and Animal Husbandry Science, Hohhot, China
| | - Gaowa Gong
- Inner Mongolia Academy of Agricultural and Animal Husbandry Science, Hohhot, China
| | - Tingting Wan
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
| | - He Hu
- Inner Mongolia Academy of Agricultural and Animal Husbandry Science, Hohhot, China
| | - Peng Yu
- Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
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He P, Zhang M, Zhang Y, Wu H, Zhang X. Effects of Selenium Enrichment on Dough Fermentation Characteristics of Baker's Yeast. Foods 2023; 12:2343. [PMID: 37372553 DOI: 10.3390/foods12122343] [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: 05/14/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
In this research, the effect of selenium (Se) enrichment on dough fermentation characteristics of yeast and the possible mechanisms was investigated. Then, the Se-enriched yeast was used as starter to make Se-enriched bread, and the difference between Se-enriched bread and common bread was investigated. It was found Se enrichment increased CO2 production and sugar consumption rate of Saccharomyces cerevisiae (S. cerevisiae) in dough fermentation, and had positive impacts on final volume and rheological index of dough. The mechanism is possibly related to higher activity and protein expression of hexokinase (HK), phosphofructokinase (PFK), pyruvate kinase (PK), citrate synthase (CS), isocitrate dehydrogenase (ICD), and α-ketoglutarate dehydrogenase (α-KGDHC) in Se-enriched yeast. Moreover, Se-enriched bread (Se content: 11.29 μg/g) prepared by using Se-enriched yeast as starter exhibited higher overall acceptability on sensory, cell density in stomatal morphology, and better elasticity and cohesiveness on texture properties than common bread, which may be due to effect of higher CO2 production on dough quality. These results indicate Se-enriched yeast could be used as both Se-supplements and starter in baked-foods making.
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Affiliation(s)
- Ping He
- College of Food Sciences and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, China
| | - Mengmeng Zhang
- College of Food Sciences and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, China
| | - Yizhe Zhang
- College of Food Sciences and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, China
| | - Hui Wu
- College of Food Sciences and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, China
| | - Xiaoyuan Zhang
- Industrial Technology Research Institute, South China University of Technology, Guangzhou 510641, China
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Nie X, Zhu Z, Lu H, Xue M, Tan Z, Zhou J, Xin Y, Mao Y, Shi H, Zhang D. Assembly of selenium nanoparticles by protein coronas composed of yeast protease A. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Nie X, Yang X, He J, Liu P, Shi H, Wang T, Zhang D. Bioconversion of inorganic selenium to less toxic selenium forms by microbes: A review. Front Bioeng Biotechnol 2023; 11:1167123. [PMID: 36994362 PMCID: PMC10042385 DOI: 10.3389/fbioe.2023.1167123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/01/2023] [Indexed: 03/14/2023] Open
Abstract
In recent years, microbial conversion of inorganic selenium into an efficient and low-toxic form of selenium has attracted much attention. With the improvement of scientific awareness and the continuous progress of nanotechnology, selenium nanoparticles can not only play the unique functions of organic selenium and inorganic selenium but also have higher safety, absorption and biological activity than other selenium forms. Therefore, the focus of attention has gradually shifted beyond the level of selenium enrichment in yeast to the combination of biosynthetic selenium nanoparticles (BioSeNPs). This paper primarily reviews inorganic selenium and its conversion to less toxic organic selenium and BioSeNPs by microbes. The synthesis method and potential mechanism of organic selenium and BioSeNPs are also introduced, which provide a basis for the production of specific forms of selenium. The methods to characterize selenium in different forms are discussed to understand the morphology, size and other characteristics of selenium. In general, to obtain safer and higher selenium content products, it is necessary to develop yeast resources with higher selenium conversion and accumulation.
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Affiliation(s)
- Xinling Nie
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
- Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, China
| | - Xurui Yang
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
- Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, China
| | - Junyi He
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
- Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, China
| | - Pei Liu
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
- Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, China
| | - Hao Shi
- Faculty of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
- Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huaiyin Institute of Technology, Huaian, China
- *Correspondence: Hao Shi, , ; Tao Wang, ; Daihui Zhang,
| | - Tao Wang
- Department of Microbiology, The University of Georgia, Athens, GA, United States
- *Correspondence: Hao Shi, , ; Tao Wang, ; Daihui Zhang,
| | - Daihui Zhang
- Institute of Chemical Industry of Forest Product, Chinese Academy of Forestry, Nanjing, Jiangsu, China
- *Correspondence: Hao Shi, , ; Tao Wang, ; Daihui Zhang,
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Tangjaidee P, Swedlund P, Xiang J, Yin H, Quek SY. Selenium-enriched plant foods: Selenium accumulation, speciation, and health functionality. Front Nutr 2023; 9:962312. [PMID: 36815133 PMCID: PMC9939470 DOI: 10.3389/fnut.2022.962312] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/13/2022] [Indexed: 02/09/2023] Open
Abstract
Selenium (Se) is an essential element for maintaining human health. The biological effects and toxicity of Se compounds in humans are related to their chemical forms and consumption doses. In general, organic Se species, including selenoamino acids such as selenomethionine (SeMet), selenocystine (SeCys2), and Se-methylselenocysteine (MSC), could provide greater bioactivities with less toxicity compared to those inorganics including selenite (Se IV) and selenate (Se VI). Plants are vital sources of organic Se because they can accumulate inorganic Se or metabolites and store them as organic Se forms. Therefore, Se-enriched plants could be applied as human food to reduce deficiency problems and deliver health benefits. This review describes the recent studies on the enrichment of Se-containing plants in particular Se accumulation and speciation, their functional properties related to human health, and future perspectives for developing Se-enriched foods. Generally, Se's concentration and chemical forms in plants are determined by the accumulation ability of plant species. Brassica family and cereal grains have excessive accumulation capacity and store major organic Se compounds in their cells compared to other plants. The biological properties of Se-enriched plants, including antioxidant, anti-diabetes, and anticancer activities, have significantly presented in both in vitro cell culture models and in vivo animal assays. Comparatively, fewer human clinical trials are available. Scientific investigations on the functional health properties of Se-enriched edible plants in humans are essential to achieve in-depth information supporting the value of Se-enriched food to humans.
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Affiliation(s)
- Pipat Tangjaidee
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Peter Swedlund
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Jiqian Xiang
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, Enshi, Hubei, China
| | - Hongqing Yin
- Enshi Autonomous Prefecture Academy of Agriculture Sciences, Enshi, Hubei, China
| | - Siew Young Quek
- Food Science, School of Chemical Sciences, University of Auckland, Auckland, New Zealand,Riddet Institute New Zealand Centre of Research Excellence in Food, Palmerston North, New Zealand,*Correspondence: Siew Young Quek,
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7
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Nie X, Xing Y, Li Q, Gao F, Wang S, Liu P, Li X, Tan Z, Wang P, Shi H. ARTP mutagenesis promotes selenium accumulation in Saccharomyces boulardii. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Dzikovskaya LA, Degtyareva ES, Shegai PV, Ivanov SA, Kaprin AD. Antioxidant Properties of a Nanostructured Clathrate Complex Selenopyran with β-Cyclodextrin in Model Systems of Oxidative Stress. Bull Exp Biol Med 2021; 171:247-250. [PMID: 34173103 PMCID: PMC8233178 DOI: 10.1007/s10517-021-05204-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Indexed: 11/30/2022]
Abstract
We studied the effect of nanostructured clathrate complex 9-phenyl-symm-octahydoselenoxanthene (selenopyran) with β-cyclodextrin on the generation of ОН· radicals in the Fenton system and parameters of oxidative stress in rat liver cells incubated at 37°С for 1 h. The complex inhibits the development of free-radical oxidative processes induced by ROS and the most toxic ОН· radicals, reduces the increased level of ROS induced by prooxidants, and exhibits antioxidant activity.
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Affiliation(s)
- L A Dzikovskaya
- A. F. Tsyb Medical Radiological Research Center, Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Obninsk, Russia.
| | - E S Degtyareva
- A. F. Tsyb Medical Radiological Research Center, Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Obninsk, Russia
| | - P V Shegai
- A. F. Tsyb Medical Radiological Research Center, Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Obninsk, Russia
| | - S A Ivanov
- A. F. Tsyb Medical Radiological Research Center, Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A D Kaprin
- A. F. Tsyb Medical Radiological Research Center, Affiliated Branch of National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, Obninsk, Russia
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9
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Ekumah JN, Ma Y, Akpabli-Tsigbe NDK, Kwaw E, Ma S, Hu J. Global soil distribution, dietary access routes, bioconversion mechanisms and the human health significance of selenium: A review. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100960] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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A New Approach for the Production of Selenium-Enriched and Probiotic Yeast Biomass from Agro-Industrial by-Products in a Stirred-Tank Bioreactor. Metabolites 2020; 10:metabo10120508. [PMID: 33322101 PMCID: PMC7764536 DOI: 10.3390/metabo10120508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 12/02/2022] Open
Abstract
The production of biomolecules using agro-industrial by-products as feedstock is a growing trend worldwide. Selenium (Se) is a trace element essential for health, and the Se-enrichment of yeast biomass can enhance its benefits. This study investigated the feasibility of the production of Saccharomyces cerevisiae Se-enriched biomass using a medium composed of corn bran and soybean bran acid hydrolysates as carbon and nitrogen sources in a stirred-tank reactor. After hydrolysis, hydrolysates presented complex composition and high concentrations of sugars, proteins, and minerals. The use of a stirred-tank bioreactor leads to the production of 9 g/L S. cerevisiae biomass enriched with 236.93 μg/g Se, and 99% cell viability. Likewise, the combination of sugarcane molasses and soybean bran hydrolysate was effective for cell growth of a probiotic strain of S. cerevisiae with a 24.08% β-glucan content. The results demonstrated that starchy acid hydrolysates are low-cost and efficient substrates for the production of yeast biomass and derivate products and may contribute to further studies for a sustainable development of biorefinery technologies.
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11
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Hosseindokht Khujin M, Zare H. Isolation of Indigenous Selenium Tolerant Yeast and Investigation of the Relationship Between Growth and Selenium Biotransformation. Adv Pharm Bull 2020; 10:146-149. [PMID: 32002375 PMCID: PMC6983986 DOI: 10.15171/apb.2020.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 06/10/2019] [Accepted: 06/24/2019] [Indexed: 12/02/2022] Open
Abstract
Purpose: Organic selenium compound such as selenomethionine plays a significant function in the response to oxidative stress. Saccharomyces cerevisiae have the ability to accumulate selenium and selenium biotransformation. Selection of indigenous selenium tolerant yeast is our goals. The relationship between cell growth and selenium biotransformation was also investigated.
Methods: The screening of the yeast cell was carried out at two steps in order to select yeast with high capacity for resistance and accumulation of selenium. The isolates were selected according to produced high biomass at different concentrations of selenium. Secondly, best yeast strains from previous step were grown in presence of 25 mg/L of sodium selenite and organic selenium content was measured.
Results: The S17 isolate showed had maximum organic selenium accumulation (2515 ppm) and biomass production (2.73 g/L) compared to the other isolates. The biomass production and organic selenium accumulation of the S17 during 120 hours was shown a direct relationship between growth and biotransformation.
Conclusion: This increase in organic selenium content was achieved with yeast screening. It is interesting to know that organic selenium has high bioavailability and low toxicity compared with inorganic selenium. Therefore, finding yeast strains which are resistant to selenium can be very helpful in cancer prevention.
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Affiliation(s)
- Maryam Hosseindokht Khujin
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamed Zare
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran.,Pharmaceutical Biotechnology Department, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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12
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Wang D, Wang D, Pu L, Wei G. Improved Antioxidant Capacity and Immune Function of Broiler Chickens Fed with Selenium-enriched Candida utilis. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2020. [DOI: 10.1590/1806-9061-2019-1047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- D Wang
- Soochow University, China
| | - D Wang
- Soochow University, China
| | - L Pu
- Soochow University, China
| | - G Wei
- Soochow University, China
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13
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Zhang G, Yao X, Wang C, Wang D, Wei G. Transcriptome analysis reveals the mechanism underlying improved glutathione biosynthesis and secretion in Candida utilis during selenium enrichment. J Biotechnol 2019; 304:89-96. [PMID: 31449823 DOI: 10.1016/j.jbiotec.2019.08.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 07/02/2019] [Accepted: 08/22/2019] [Indexed: 12/21/2022]
Abstract
The effect of sodium selenite on batch culture of Candida utilis CCTCC M 209298 was investigated. Cell growth was inhibited while glutathione biosynthesis and secretion were improved during selenium enrichment. To reveal the mechanism underlying the decrease in biomass and the increase in glutathione, both metabolic flux analysis of key intermediates involved in glutathione metabolic pathway and transcriptome analysis of C. utilis by RNA-seq were carried out for selenized cells and the control without selenium enrichment. Results indicated that sodium selenite decreased carbon fluxes towards biomass but increased fluxes towards amino acids for the biosynthesis of glutathione and related amino acids. Selenium enrichment down-regulated a large number of genes involved in cell components and the cell cycle, resulting in decreased biomass as well as increased cell permeability. Moreover, several genes associated with transportation, binding, and mitochondrial and ribosomal functions for energy metabolism and protein synthesis were up-regulated in the presence of sodium selenite. All of these results disclosed the physiological response of C. utilis to sodium selenite.
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Affiliation(s)
- Gaochuan Zhang
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, PR China
| | - Xingyun Yao
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, PR China
| | - Chonglong Wang
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, PR China
| | - Dahui Wang
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, PR China.
| | - Gongyuan Wei
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, PR China.
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14
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Rai AK, Pandey A, Sahoo D. Biotechnological potential of yeasts in functional food industry. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2018.11.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Liu Y, Liu Q, Hesketh J, Huang D, Gan F, Hao S, Tang S, Guo Y, Huang K. Protective effects of selenium-glutathione-enriched probiotics on CCl 4-induced liver fibrosis. J Nutr Biochem 2018; 58:138-149. [PMID: 29933196 DOI: 10.1016/j.jnutbio.2018.04.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 04/19/2018] [Accepted: 04/20/2018] [Indexed: 12/19/2022]
Abstract
Hepatic fibrosis is a common pathological basis of liver cirrhosis and hepatocellular carcinomas. So, prevention and treatment of liver fibrosis is one of the crucial therapeutic goals in hepatology. Organic selenium, glutathione or probiotics supplementation could ameliorate hepatic fibrosis, respectively. The purpose of this study is to develop a novel selenium-glutathione-enriched probiotics (SGP) and to investigate its protective effect on CCl4-induced liver fibrosis in rats. Yeast strains with the high-yield glutathione were isolated and identified by analysis of 26S ribosomal DNA sequences. The fermentation parameters of SGP were optimized through single-factor, Plackett-Burman (PB) design and response surface methodology (RSM). The final SGP contained 38.4 μg/g of organic selenium, 34.1 mg/g of intracellular glutathione, approximately 1×1010 CFU/g live Saccharomyces cerevisiae and 1×1012 CFU/g live Lactobacillus acidophilus. SGP had better protective effects on liver fibrosis than selenium, glutathione or probiotics, respectively. The hepatic silent information regulator 1 (SIRT1) level was down-regulated and oxidative stress, endoplasmic reticulum (ER) stress, inflammation and phosphorylated MAPK was increased in CCl4-treated rats. However, SGP can significantly reverse these changes caused by CCl4. Our findings suggest that SGP was effective in attenuating liver fibrosis by the activation of SIRT1 signaling and attenuating hepatic oxidative stress, ER stress, inflammation and MAPK signaling.
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Affiliation(s)
- Yunhuan Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China; Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Qing Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China
| | - John Hesketh
- Institute for Cell and Molecular Biosciences, The Medical School, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Da Huang
- Department of Chemistry, Department of Electrical and Computer Engineering Laboratory for Nanophotonics, Rice University, Houston, TX 77005, United States
| | - Fang Gan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China
| | - Shu Hao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China
| | - Shan Tang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China
| | - Yanxia Guo
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China
| | - Kehe Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China.
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16
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Kieliszek M, Błażejak S, Kurek E. Binding and Conversion of Selenium in Candida utilis ATCC 9950 Yeasts in Bioreactor Culture. Molecules 2017; 22:molecules22030352. [PMID: 28245620 PMCID: PMC6155356 DOI: 10.3390/molecules22030352] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/02/2017] [Accepted: 02/22/2017] [Indexed: 11/16/2022] Open
Abstract
Selenium is considered an essential component of all living organisms. The use of yeasts as a selenium supplement in human nutrition has gained much interest over the last decade. The accumulation and biochemical transformation of selenium in yeast cells is particularly interesting to many researchers. In this article, we present the results of the determination of selenium and selenomethionine content in the biomass of feed yeast Candida utilis ATCC 9950 obtained from the culture grown in a bioreactor. The results indicated that C. utilis cells performed the biotransformation of inorganic selenium(IV) to organic derivatives (e.g., selenomethionine). Selenium introduced (20–30 mg Se4+∙L−1) to the experimental media in the form of sodium(IV) selenite (Na2SeO3) salt caused a significant increase in selenium content in the biomass of C. utilis, irrespective of the concentration. The highest amount of selenium (1841 μg∙gd.w.−1) was obtained after a 48-h culture in media containing 30 mg Se4+∙L−1. The highest content of selenomethionine (238.8 μg∙gd.w.−1) was found after 48-h culture from the experimental medium that was supplemented with selenium at a concentration of 20 mg Se4+∙L−1. Biomass cell in the cultures supplemented with selenium ranged from 1.5 to 14.1 g∙L−1. The results of this study indicate that yeast cell biomass of C. utilis enriched mainly with the organic forms of selenium can be a valuable source of protein. It creates the possibility of obtaining selenium biocomplexes that can be used in the production of protein-selenium dietary supplements for animals and humans
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Affiliation(s)
- Marek Kieliszek
- Faculty of Food Sciences, Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland.
| | - Stanisław Błażejak
- Faculty of Food Sciences, Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland.
| | - Eliza Kurek
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirki i Wigury 101, 02-089 Warsaw, Poland.
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The mechanism of improved intracellular organic selenium and glutathione contents in selenium-enriched Candida utilis by acid stress. Appl Microbiol Biotechnol 2016; 101:2131-2141. [PMID: 27896382 DOI: 10.1007/s00253-016-8016-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/21/2016] [Accepted: 11/13/2016] [Indexed: 10/20/2022]
Abstract
Batch culture of Candida utilis CCTCC M 209298 for the preparation of selenium (Se)-enriched yeast was carried out under different pH conditions, and maximal intracellular organic Se and glutathione (GSH) contents were obtained in a moderate acid stress environment (pH 3.5). In order to elucidate the physiological mechanism of improved performance of Se-enriched yeast by acid stress, assays of the key enzymes involved in GSH biosynthesis and determinations of energy supply and regeneration were performed. The results indicated that moderate acid stress increased the activity of γ-glutamylcysteine synthetase and the ratios of NADH/NAD+ and ATP/ADP, although no significant changes in intracellular pH were observed. In addition, the molecular mechanism of moderate acid stress favoring the improvement of Se-yeast performance was revealed by comparing whole transcriptomes of yeast cells cultured at pH 3.5 and 5.5. Comparative analysis of RNA-Seq data indicated that 882 genes were significantly up-regulated by moderate acid stress. Functional annotation of the up-regulated genes based on gene ontology and the Kyoto Encyclopedia of Genes and Genome (KEGG) pathway showed that these genes are involved in ATP synthesis and sulfur metabolism, including the biosynthesis of methionine, cysteine, and GSH in yeast cells. Increased intracellular ATP supply and more amounts of sulfur-containing substances in turn contributed to Na2SeO3 assimilation and biotransformation, which ultimately improved the performance of the Se-enriched C. utilis.
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Forootanfar H, Adeli-Sardou M, Nikkhoo M, Mehrabani M, Amir-Heidari B, Shahverdi AR, Shakibaie M. Antioxidant and cytotoxic effect of biologically synthesized selenium nanoparticles in comparison to selenium dioxide. J Trace Elem Med Biol 2014; 28:75-9. [PMID: 24074651 DOI: 10.1016/j.jtemb.2013.07.005] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 07/21/2013] [Accepted: 07/23/2013] [Indexed: 11/18/2022]
Abstract
The present study was designed to evaluate antioxidant and cytotoxic effect of selenium nanoparticles (Se NPs) biosynthesized by a newly isolated marine bacterial strain Bacillus sp. MSh-1. An organic-aqueous partitioning system was applied for purification of the biogenic Se NPs and the purified Se NPs were then investigated for antioxidant activity using DPPH scavenging activity and reducing power assay. Cytotoxic effect of the biogenic Se NPs and selenium dioxide (SeO2) on MCF-7 cell line was assesed by MTT assay. Tranmission electron micrograph (TEM) of the purified Se NPs showed individual and spherical nanostructure in size range of about 80-220nm. The obtained results showed that, at the same concentration of 200μg/mL, Se NPs and SeO2 represented scavenging activity of 23.1±3.4% and 13.2±3.1%, respectively. However, the data obtained from reducing power assay revealed higher electron-donating activity of SeO2 compared to Se NPs. Higher IC50 of the Se NPs (41.5±0.9μg/mL) compared to SeO2 (6.7±0.8μg/mL) confirmed lower cytotoxicity of the biogenic Se NPs on MCF-7 cell line.
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Affiliation(s)
- Hamid Forootanfar
- Pharmaceutics Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahboubeh Adeli-Sardou
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Maryam Nikkhoo
- The Student Research Committee, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mitra Mehrabani
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Bagher Amir-Heidari
- Pharmaceutics Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Ahmad Reza Shahverdi
- Department of Pharmaceutical Biotechnology and Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Shakibaie
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran.
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