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Sibanda T, Marole TA, Thomashoff UL, Thantsha MS, Buys EM. Bifidobacterium species viability in dairy-based probiotic foods: challenges and innovative approaches for accurate viability determination and monitoring of probiotic functionality. Front Microbiol 2024; 15:1327010. [PMID: 38371928 PMCID: PMC10869629 DOI: 10.3389/fmicb.2024.1327010] [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: 10/24/2023] [Accepted: 01/15/2024] [Indexed: 02/20/2024] Open
Abstract
Bifidobacterium species are essential members of a healthy human gut microbiota. Their presence in the gut is associated with numerous health outcomes such as protection against gastrointestinal tract infections, inflammation, and metabolic diseases. Regular intake of Bifidobacterium in foods is a sustainable way of maintaining the health benefits associated with its use as a probiotic. Owing to their global acceptance, fermented dairy products (particularly yogurt) are considered the ideal probiotic carrier foods. As envisioned in the definition of probiotics as "live organisms," the therapeutic functionalities of Bifidobacterium spp. depend on maintaining their viability in the foods up to the point of consumption. However, sustaining Bifidobacterium spp. viability during the manufacture and shelf-life of fermented dairy products remains challenging. Hence, this paper discusses the significance of viability as a prerequisite for Bifidobacterium spp. probiotic functionality. The paper focuses on the stress factors that influence Bifidobacterium spp. viability during the manufacture and shelf life of yogurt as an archetypical fermented dairy product that is widely accepted as a delivery vehicle for probiotics. It further expounds the Bifidobacterium spp. physiological and genetic stress response mechanisms as well as the methods for viability retention in yogurt, such as microencapsulation, use of oxygen scavenging lactic acid bacterial strains, and stress-protective agents. The report also explores the topic of viability determination as a critical factor in probiotic quality assurance, wherein, the limitations of culture-based enumeration methods, the challenges of species and strain resolution in the presence of lactic acid bacterial starter and probiotic species are discussed. Finally, new developments and potential applications of next-generation viability determination methods such as flow cytometry, propidium monoazide-quantitative polymerase chain reaction (PMA-qPCR), next-generation sequencing, and single-cell Raman spectroscopy (SCRS) methods are examined.
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Affiliation(s)
- Thulani Sibanda
- Department of Consumer and Food Sciences, University of Pretoria, Pretoria, South Africa
- Department of Applied Biology and Biochemistry, National University of Science and Technology, Bulawayo, Zimbabwe
- Department of Biology, National of University of Lesotho, Maseru, Lesotho
| | - Tlaleo Azael Marole
- Department of Consumer and Food Sciences, University of Pretoria, Pretoria, South Africa
| | | | - Mapitsi S. Thantsha
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Elna M. Buys
- Department of Consumer and Food Sciences, University of Pretoria, Pretoria, South Africa
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Averina OV, Kovtun AS, Mavletova DA, Ziganshin RH, Danilenko VN, Mihaylova D, Blazheva D, Slavchev A, Brazkova M, Ibrahim SA, Krastanov A. Oxidative Stress Response of Probiotic Strain Bifidobacterium longum subsp. longum GT15. Foods 2023; 12:3356. [PMID: 37761064 PMCID: PMC10530004 DOI: 10.3390/foods12183356] [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: 06/30/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open
Abstract
Bifidobacterium is a predominant and important genus in the bacterial population of the human gut microbiota. Despite the increasing number of studies on the beneficial functionality of bifidobacteria for human health, knowledge about their antioxidant potential is still insufficient. Several in vivo and in vitro studies of Bifidobacterium strains and their cellular components have shown good antioxidant capacity that provided a certain protection of their own and the host's cells. Our work presents the data of transcriptomic, proteomic, and metabolomic analyses of the growing and stationary culture of the probiotic strain B. longum subsp. longum GT15 after exposure to hydrogen peroxide for 2 h and oxygen for 2 and 4 h. The results of the analysis of the sequenced genome of B. longum GT15 showed the presence of 16 gene-encoding proteins with known antioxidant functions. The results of the full transcriptomic analysis demonstrated a more than two-fold increase of levels of transcripts for eleven genes, encoding proteins with antioxidant functions. Proteomic data analysis showed an increased level of more than two times for glutaredoxin and thioredoxin after the exposure to oxygen, which indicates that the thioredoxin-dependent antioxidant system may be the major redox homeostasis system in B. longum bacteria. We also found that the levels of proteins presumably involved in global stress, amino acid metabolism, nucleotide and carbohydrate metabolism, and transport had significantly increased in response to oxidative stress. The metabolic fingerprint analysis also showed good discrimination between cells responding to oxidative stress and the untreated controls. Our results provide a greater understanding of the mechanism of oxidative stress response in B. longum and the factors that contribute to its survival in functional food products.
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Affiliation(s)
- Olga V. Averina
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.K.); (D.A.M.); (V.N.D.)
| | - Aleksey S. Kovtun
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.K.); (D.A.M.); (V.N.D.)
| | - Dilara A. Mavletova
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.K.); (D.A.M.); (V.N.D.)
| | - Rustam H. Ziganshin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia;
| | - Valery N. Danilenko
- Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia; (A.S.K.); (D.A.M.); (V.N.D.)
| | - Dasha Mihaylova
- Department of Biotechnology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (D.M.); (A.K.)
| | - Denica Blazheva
- Department of Microbiology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (D.B.); (A.S.)
| | - Aleksandar Slavchev
- Department of Microbiology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (D.B.); (A.S.)
| | - Mariya Brazkova
- Department of Biotechnology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (D.M.); (A.K.)
| | - Salam A. Ibrahim
- Food Microbiology and Biotechnology Laboratory, Food and Nutritional Science Program, North Carolina A&T State University, Greensboro, NC 27411-1064, USA;
| | - Albert Krastanov
- Department of Biotechnology, University of Food Technologies, 4002 Plovdiv, Bulgaria; (D.M.); (A.K.)
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Marcos-Fernández R, Blanco-Míguez A, Ruiz L, Margolles A, Ruas-Madiedo P, Sánchez B. Towards the isolation of more robust next generation probiotics: The first aerotolerant Bifidobacterium bifidum strain. Food Res Int 2023; 165:112481. [PMID: 36869494 DOI: 10.1016/j.foodres.2023.112481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 11/20/2022] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
This work reports on the first described aerotolerant Bifidobacterium bifidum strain, Bifidobacterium bifidum IPLA60003, which has the ability to form colonies on the surface of agar plates under aerobic conditions, a weird phenotype that to our knowledge has never been observed in B. bifidum. The strain IPLA60003 was generated after random UV mutagenesis from an intestinal isolate. It incorporates 26 single nucleotide polymorphisms that activate the expression of native oxidative-defense mechanisms such as the alkyl hydroxyperoxide reductase, the glycolytic pathway and several genes coding for enzymes involved in redox reactions. In the present work, we discuss the molecular mechanisms underlying the aerotolerance phenotype of B. bifidum IPLA60003, which will open new strategies for the selection and inclusion of probiotic gut strains and next generation probiotics into functional foods.
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Affiliation(s)
- Raquel Marcos-Fernández
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Aitor Blanco-Míguez
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Lorena Ruiz
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Abelardo Margolles
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - Patricia Ruas-Madiedo
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain.
| | - Borja Sánchez
- Functionality and Ecology of Beneficial Microbes (MicroHealth) Group, Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias - Consejo Superior de Investigaciones Científicas (IPLA-CSIC), Villaviciosa, Asturias, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Asturias, Spain.
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Abstract
Bifidobacteria naturally inhabit diverse environments, including the gastrointestinal tracts of humans and animals. Members of the genus are of considerable scientific interest due to their beneficial effects on health and, hence, their potential to be used as probiotics. By definition, probiotic cells need to be viable despite being exposed to several stressors in the course of their production, storage, and administration. Examples of common stressors encountered by probiotic bifidobacteria include oxygen, acid, and bile salts. As bifidobacteria are highly heterogenous in terms of their tolerance to these stressors, poor stability and/or robustness can hamper the industrial-scale production and commercialization of many strains. Therefore, interest in the stress physiology of bifidobacteria has intensified in recent decades, and many studies have been established to obtain insights into the molecular mechanisms underlying their stability and robustness. By complementing traditional methodologies, omics technologies have opened new avenues for enhancing the understanding of the defense mechanisms of bifidobacteria against stress. In this review, we summarize and evaluate the current knowledge on the multilayered responses of bifidobacteria to stressors, including the most recent insights and hypotheses. We address the prevailing stressors that may affect the cell viability during production and use as probiotics. Besides phenotypic effects, molecular mechanisms that have been found to underlie the stress response are described. We further discuss strategies that can be applied to improve the stability of probiotic bifidobacteria and highlight knowledge gaps that should be addressed in future studies.
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Affiliation(s)
- Marie Schöpping
- Systems Biology, Discovery, Chr. Hansen A/S, Hørsholm, Denmark
- Division of Industrial Biotechnology, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Ahmad A. Zeidan
- Systems Biology, Discovery, Chr. Hansen A/S, Hørsholm, Denmark
| | - Carl Johan Franzén
- Division of Industrial Biotechnology, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
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Blazheva D, Mihaylova D, Averina OV, Slavchev A, Brazkova M, Poluektova EU, Danilenko VN, Krastanov A. Antioxidant Potential of Probiotics and Postbiotics: A Biotechnological Approach to Improving Their Stability. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422090058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dong J, Ping L, Meng Y, Zhang K, Tang H, Liu D, Li B, Huo G. Bifidobacterium longum BL-10 with Antioxidant Capacity Ameliorates Lipopolysaccharide-Induced Acute Liver Injury in Mice by the Nuclear Factor-κB Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8680-8692. [PMID: 35797025 DOI: 10.1021/acs.jafc.2c02950] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bifidobacterium longum is frequently utilized and has broad prospects for preventing liver injury. The current research assessed the antioxidant capacity of B. longum BL-10 and probed its mechanism for ameliorating lipopolysaccharide (LPS)-induced acute liver injury (ALI). B. longum BL-10-encoded 15 antioxidant genes showed strong reducing power activity and scavenging activity of DPPH, hydroxyl radicals, and superoxide anions. The intragastric administration of B. longum BL-10 resulting in a marked reduction in liver function indicators (alanine aminotransferase, aspartate aminotransferase, total bilirubin, and total bile acid) and proinflammatory cytokines (TNF-α, IFN-γ, and IL-6) was indicative of ALI recovery. Following 16s RNA analysis, B. longum BL-10 significantly altered the richness of genera, as for the Escherichia-Shigella, Lachnospiraceae_NK4A136_group, and Clostridia_UCG-014, dramatically contributing to the formation of acetic acid and butyric acid. Meanwhile, their metabolites regulated the TLR4/NF-κB signaling pathways to alleviate hepatic injury symptoms. Overall, all the results demonstrated that B. longum BL-10 had excellent efficiency in preventing LPS-induced ALI.
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Affiliation(s)
- Jiahuan Dong
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Lijun Ping
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Yueyue Meng
- Dalian Minzu University, Ministry of Education, Dalian 116600, China
- College of Life Sciences, Key Laboratory of Biotechnology and Bioresources Utilization, Dalian 116600, China
| | - Kangyong Zhang
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Hongwei Tang
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Deyu Liu
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Bailiang Li
- Food College, Northeast Agricultural University, Harbin 150030, China
| | - Guicheng Huo
- Food College, Northeast Agricultural University, Harbin 150030, China
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7
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Abstract
Over the last decade, the genomes of several Bifidobacterium strains have been sequenced, delivering valuable insights into their genetic makeup. However, bifidobacterial genomes have not yet been systematically mined for genes associated with stress response functions and their regulation. In this work, a list of 76 genes related to stress response in bifidobacteria was compiled from previous studies. The prevalence of the genes was evaluated among the genome sequences of 171 Bifidobacterium strains. Although genes of the protein quality control and DNA repair systems appeared to be highly conserved, genome-wide in silico screening for consensus sequences of putative regulators suggested that the regulation of these systems differs among phylogenetic groups. Homologs of multiple oxidative stress-associated genes are shared across species, albeit at low sequence similarity. Bee isolates were confirmed to harbor unique genetic features linked to oxygen tolerance. Moreover, most studied Bifidobacterium adolescentis and all Bifidobacterium angulatum strains lacked a set of reactive oxygen species-detoxifying enzymes, which might explain their high sensitivity to oxygen. Furthermore, the presence of some putative transcriptional regulators of stress responses was found to vary across species and strains, indicating that different regulation strategies of stress-associated gene transcription contribute to the diverse stress tolerance. The presented stress response gene profiles of Bifidobacterium strains provide a valuable knowledge base for guiding future studies by enabling hypothesis generation and the identification of key genes for further analyses. IMPORTANCE Bifidobacteria are Gram-positive bacteria that naturally inhabit diverse ecological niches, including the gastrointestinal tract of humans and animals. Strains of the genus Bifidobacterium are widely used as probiotics, since they have been associated with health benefits. In the course of their production and administration, probiotic bifidobacteria are exposed to several stressors that can challenge their survival. The stress tolerance of probiotic bifidobacteria is, therefore, an important selection criterion for their commercial application, since strains must maintain their viability to exert their beneficial health effects. As the ability to cope with stressors varies among Bifidobacterium strains, comprehensive understanding of the underlying stress physiology is required for enabling knowledge-driven strain selection and optimization of industrial-scale production processes.
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8
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Glutaredoxin Interacts with GR and AhpC to Enhance Low-Temperature Tolerance of Antarctic Psychrophile Psychrobacter sp. ANT206. Int J Mol Sci 2022; 23:ijms23031313. [PMID: 35163237 PMCID: PMC8836231 DOI: 10.3390/ijms23031313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/22/2022] [Accepted: 01/22/2022] [Indexed: 02/05/2023] Open
Abstract
Glutaredoxin (Grx) is an important oxidoreductase to maintain the redox homoeostasis of cells. In our previous study, cold-adapted Grx from Psychrobacter sp. ANT206 (PsGrx) has been characterized. Here, we constructed an in-frame deletion mutant of psgrx (Δpsgrx). Mutant Δpsgrx was more sensitive to low temperature, demonstrating that psgrx was conducive to the growth of ANT206. Mutant Δpsgrx also had more malondialdehyde (MDA) and protein carbonylation content, suggesting that PsGrx could play a part in the regulation of tolerance against low temperature. A yeast two-hybrid system was adopted to screen interacting proteins of 26 components. Furthermore, two target proteins, glutathione reductase (GR) and alkyl hydroperoxide reductase subunit C (AhpC), were regulated by PsGrx under low temperature, and the interactions were confirmed via bimolecular fluorescence complementation (BiFC) and co-immunoprecipitation (Co-IP). Moreover, PsGrx could enhance GR activity. trxR expression in Δpsgrx, Δahpc, and ANT206 were illustrated 3.7, 2.4, and 10-fold more than mutant Δpsgrx Δahpc, indicating that PsGrx might increase the expression of trxR by interacting with AhpC. In conclusion, PsGrx may participate in glutathione metabolism and ROS-scavenging by regulating GR and AhpC to protect the growth of ANT206. These findings preliminarily suggest the role of PsGrx in the regulation of oxidative stress, which could improve the low-temperature tolerance of ANT206.
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Averina OV, Poluektova EU, Marsova MV, Danilenko VN. Biomarkers and Utility of the Antioxidant Potential of Probiotic Lactobacilli and Bifidobacteria as Representatives of the Human Gut Microbiota. Biomedicines 2021; 9:1340. [PMID: 34680457 PMCID: PMC8533434 DOI: 10.3390/biomedicines9101340] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/12/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022] Open
Abstract
Lactobacilli and bifidobacteria are an important part of human gut microbiota. Among numerous benefits, their antioxidant properties are attracting more and more attention. Multiple in vivo and in vitro studies have demonstrated that lactobacilli and bifidobacteria, along with their cellular components, possess excellent antioxidant capacity, which provides a certain degree of protection to the human body against diseases associated with oxidative stress. Recently, lactobacilli and bifidobacteria have begun to be considered as a new source of natural antioxidants. This review summarizes the current state of research on various antioxidant properties of lactobacilli and bifidobacteria. Special emphasis is given to the mechanisms of antioxidant activity of these bacteria in the human gut microbiota, which involve bacterial cell components and metabolites. This review is also dedicated to the genes involved in the antioxidant properties of lactobacilli and bifidobacteria strains as indicators of their antioxidant potential in human gut microbiota. Identification of the antioxidant biomarkers of the gut microbiota is of great importance both for creating diagnostic systems for assessing oxidative stress and for choosing strategies aimed at restoring the normal functioning of the microbiota and, through it, restoring human health. In this review, the practical application of probiotic strains with proven antioxidant properties to prevent oxidative stress is also considered.
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Affiliation(s)
- Olga V. Averina
- Vavilov Institute of General Genetics, Russion Academy of Sciences, 119991 Moscow, Russia; (E.U.P.); (M.V.M.); (V.N.D.)
| | - Elena U. Poluektova
- Vavilov Institute of General Genetics, Russion Academy of Sciences, 119991 Moscow, Russia; (E.U.P.); (M.V.M.); (V.N.D.)
| | - Mariya V. Marsova
- Vavilov Institute of General Genetics, Russion Academy of Sciences, 119991 Moscow, Russia; (E.U.P.); (M.V.M.); (V.N.D.)
| | - Valery N. Danilenko
- Vavilov Institute of General Genetics, Russion Academy of Sciences, 119991 Moscow, Russia; (E.U.P.); (M.V.M.); (V.N.D.)
- Institute of Ecology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
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Emanuel E, Dubrovin I, Pogreb R, Pinhasi GA, Cahan R. Resuscitation of Pulsed Electric Field-Treated Staphylococcus aureus and Pseudomonas putida in a Rich Nutrient Medium. Foods 2021; 10:foods10030660. [PMID: 33808827 PMCID: PMC8003612 DOI: 10.3390/foods10030660] [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: 02/06/2021] [Revised: 03/04/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Pulsed electric fields (PEFs) technology was reported to be useful as a disinfection method in the liquid food industry. This technology may lead to membrane permeabilization and bacterial death. However, resuscitation of viable but non-culturable cells and sublethally injured microorganisms in food was reported to be associated with foodborne outbreaks. The main aim of this study was to investigate the possible recovery of injured PEF-treated bacteria. The PEF treatment of Staphylococcus aureus and Pseudomonas putida led to a reduction of 3.2 log10 and 4.8 log10, respectively. After 5 h, no colony forming units (CFUs) were observed when the bacteria were suspended in phosphate buffer saline (PBS); and for 24 h, no recovery was observed. The PEF-treated S. aureus in brain-heart infusion (BHI) medium were maintained at 1.84 × 104 CFU mL−1 for about 1.5 h. While P. putida decreased to zero CFU mL−1 by the 4th hour. However, after that, both bacteria recovered and began to multiply. Flow cytometry analysis showed that PEF treatment led to significant membrane permeabilization. Mass spectrometry analysis of PEF-treated P. putida which were suspended in BHI revealed over-expression of 22 proteins, where 55% were related to stress conditions. Understanding the recovery conditions of PEF-treated bacteria is particularly important in food industry pasteurization. To our knowledge, this is the first comprehensive study describing the recovery of injured PEF-treated S. aureus and P. putida bacteria.
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Affiliation(s)
- Efrat Emanuel
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Irina Dubrovin
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Roman Pogreb
- Department of Physics, Ariel University, Ariel 40700, Israel;
| | - Gad A. Pinhasi
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
| | - Rivka Cahan
- Department of Chemical Engineering, Ariel University, Ariel 40700, Israel; (E.E.); (I.D.); (G.A.P.)
- Correspondence: ; Tel.: +972-54-7740293
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11
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Alessandri G, van Sinderen D, Ventura M. The genus bifidobacterium: From genomics to functionality of an important component of the mammalian gut microbiota running title: Bifidobacterial adaptation to and interaction with the host. Comput Struct Biotechnol J 2021; 19:1472-1487. [PMID: 33777340 PMCID: PMC7979991 DOI: 10.1016/j.csbj.2021.03.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 02/07/2023] Open
Abstract
Members of the genus Bifidobacterium are dominant and symbiotic inhabitants of the mammalian gastrointestinal tract. Being vertically transmitted, bifidobacterial host colonization commences immediately after birth and leads to a phase of host infancy during which bifidobacteria are highly prevalent and abundant to then transit to a reduced, yet stable abundance phase during host adulthood. However, in order to reach and stably colonize their elective niche, i.e. the large intestine, bifidobacteria have to cope with a multitude of oxidative, osmotic and bile salt/acid stress challenges that occur along the gastrointestinal tract (GIT). Concurrently, bifidobacteria not only have to compete with the myriad of other gut commensals for nutrient acquisition, but they also require protection against bacterial viruses. In this context, Next-Generation Sequencing (NGS) techniques, allowing large-scale comparative and functional genome analyses have helped to identify the genetic strategies that bifidobacteria have developed in order to colonize, survive and adopt to the highly competitive mammalian gastrointestinal environment. The current review is aimed at providing a comprehensive overview concerning the molecular strategies on which bifidobacteria rely to stably and successfully colonize the mammalian gut.
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Affiliation(s)
- Giulia Alessandri
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Douwe van Sinderen
- APC Microbiome Ireland and School of Microbiology, University College Cork, Western Road, Cork, Ireland
| | - Marco Ventura
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy.,Microbiome Research Hub, University of Parma, Parma, Italy
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12
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Song Z, Zuo L, Li C, Tian Y, Wang H. Copper Ions Facilitate the Conjugative Transfer of SXT/R391 Integrative and Conjugative Element Across Bacterial Genera. Front Microbiol 2021; 11:616792. [PMID: 33603719 PMCID: PMC7884315 DOI: 10.3389/fmicb.2020.616792] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022] Open
Abstract
Copper can persist stably in the environment for prolonged periods. Except for inducing antibiotic resistance in bacteria, copper ions (Cu2+) can facilitate the horizontal transfer of plasmid DNA. However, whether and how Cu2+ can accelerate the conjugative transfer of SXT/R391 integrative and conjugative element (ICE) is still largely unknown. In this study, Proteus mirabilis ChSC1905, harboring an SXT/R391 ICE that carried 21 antibiotic resistance genes (ARGs), was used as a donor, and Escherichia coli EC600 was used as a recipient. Cu2+, at subinhibitory and environmentally relevant concentrations (1–10 μmol/L), significantly accelerated the conjugative transfer of SXT/R391 ICE across bacterial genera (from P. mirabilis to E. coli) (p < 0.05). The combined analyses of phenotypic tests and genome-wide sequencing indicated that reactive oxygen species (ROS) production and cell membrane permeability were critical in the enhanced conjugative transfer of SXT/R391 ICE. Furthermore, the expression of genes related to cell adhesion and ATP synthesis was also significantly upregulated on exposure to Cu2+ at a concentration of 5 μmol/L. This study clarified the potential mechanisms of Cu2+ to promote the conjugative transfer of SXT/R391 ICE, revealing the potential risk imposed by Cu2+ on the horizontal transfer of SXT/R391 ICE-mediated ARGs.
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Affiliation(s)
- Zhou Song
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lei Zuo
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Cui Li
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yiming Tian
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hongning Wang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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13
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Engineer probiotic bifidobacteria for food and biomedical applications - Current status and future prospective. Biotechnol Adv 2020; 45:107654. [DOI: 10.1016/j.biotechadv.2020.107654] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/14/2020] [Accepted: 11/01/2020] [Indexed: 12/15/2022]
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14
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Zhang W, Wang Y, Li K, Kwok LY, Liu W, Zhang H. Short communication: Modulation of fatty acid metabolism improves oxygen tolerance of Bifidobacterium animalis ssp. lactis Probio-M8. J Dairy Sci 2020; 103:8791-8795. [PMID: 32861486 DOI: 10.3168/jds.2019-18049] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/12/2020] [Indexed: 12/29/2022]
Abstract
Bifidobacterium animalis ssp. lactis Probio-M8 is a potential probiotic strain that was isolated from human milk. Previously, we obtained an oxygen-resistant variant (Probio-M8o) of Probio-M8 by an adaptive evolution strategy. In the present study, a comparative transcriptomic analysis of Probio-M8o and Probio-M8 was carried out to reveal the cellular mechanism of the oxygen-resistant phenotype. Using RNA-seq, 210 and 217 differentially expressed genes were identified in Probio-M8o compared with Probio-M8 after oxygen exposure for 30 and 60 min, respectively. The oxygen treatment upregulated a set of genes that encoded proteins responsible for fatty acid biosynthesis. This observation was in good agreement with the composition change in fatty acids at the biochemical level. Our study showed that the oxygen-resistant phenotype could be related to adaptation of fatty acid metabolism.
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Affiliation(s)
- Wenyi Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China
| | - Yuanchi Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China
| | - Kangning Li
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China
| | - Lai-Yu Kwok
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China
| | - Wenjun Liu
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China
| | - Heping Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Key Laboratory of Dairy Products Processing, Ministry of Agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China.
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15
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Interaction between Bifidobacterium bifidum and Listeria monocytogenes enhances antioxidant activity through oxidoreductase system. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Zhang J, Wang S, Zeng Z, Qin Y, Li P. The complete genome sequence of Bifidobacterium animalis subsp. lactis 01 and its integral components of antioxidant defense system. 3 Biotech 2019; 9:352. [PMID: 31501753 DOI: 10.1007/s13205-019-1890-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 08/27/2019] [Indexed: 12/13/2022] Open
Abstract
The strain Bifidobacterium animalis 01, isolated from centenarians, showed promising antioxidant potential in our previous studies. In this study, the genome information on strain 01 and the important antioxidant components are presented. The complete genome comprises a single circular chromosome (1,931,632 bp; 60.49% G + C content) with 1569 coding DNA sequences, 52 tRNA, and 9 rRNA operons. Based on phylogenomic analyses, strain 01 was designated as B. animalis subsp. lactis 01. The genomic analysis reveals that at least eight protein-coding genes are antioxidant-related genes. The conditions for simulating the oxidative stress have been determined. The results of quantitative reverse transcription PCR further demonstrated that the genes encoding the thioredoxin system (ahpC, ahpF, bcp, trxB, trxA, nrdH, and msrAB) and non-enzyme factors of the divalent cation transporter gene (mntH) were upregulated under the H2O2 challenge, indicating that the eight genes were effective components of the antioxidant system. The results of this study could benefit for understanding the antioxidant mechanism of B. animalis 01 and future utilization of it as a potential antioxidant agent.
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Affiliation(s)
- Jinlan Zhang
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Tsinghua East Road, HaiDian District, Beijing, 10083 China
| | - Shibo Wang
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Tsinghua East Road, HaiDian District, Beijing, 10083 China
| | - Zhu Zeng
- 2College of Biotechnology, Southwest University, No. 2 Tiansheng, Beibei District, Chongqing, 400715 China
| | - Yuxuan Qin
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Tsinghua East Road, HaiDian District, Beijing, 10083 China
| | - Pinglan Li
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Tsinghua East Road, HaiDian District, Beijing, 10083 China
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17
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Huang G, Pan H, Zhu Z, Li Q. The complete genome sequence of Bifidobacterium longum LTBL16, a potential probiotic strain from healthy centenarians with strong antioxidant activity. Genomics 2019; 112:769-773. [PMID: 31226482 DOI: 10.1016/j.ygeno.2019.05.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/15/2019] [Accepted: 05/17/2019] [Indexed: 12/24/2022]
Abstract
B. longum LTBL16 is a potential probiotic strain that was isolated from healthy centenarians in Bama, China. In vitro experiments show that B. longum LTBL16 has a strong antioxidant activity and the complete genome of B. longum LTBL16 was sequenced in this work. The genome consists of one 2,430,682 bp circular chromosome that is plasmid free. The circular chromosome has a GC content of 61.23% and contains 2071 coding sequences (CDSs), 4 rRNA manipulators and 55 tRNA coding genes. Genetic analysis showed that at least five protein-coding genes were associated with antioxidant activity, and the abundance of these genes may be related to free radical scavenging rates and oxygen tolerance. In addition, the safety of B. longum LTBL16 was evaluated using a virulence factor database and antibiotic resistance gene database. The results indicate that B. longum LTBL16 has the good potential for the development and utilization as a probiotic.
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Affiliation(s)
- Guohong Huang
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, People's Republic of China; College of Food and Biological Technology, Guangxi Vocational and Technical College, Ming Yang Industrial Park Jiangnan District, Nanning 530226, People's Republic of China
| | - Haibo Pan
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, People's Republic of China
| | - Zhenjun Zhu
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, People's Republic of China
| | - Quanyang Li
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, People's Republic of China.
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18
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Satoh T, Todoroki M, Kobayashi K, Niimura Y, Kawasaki S. Purified thioredoxin reductase from O 2-sensitive Bifidobacterium bifidum degrades H 2O 2 by interacting with alkyl hydroperoxide reductase. Anaerobe 2019; 57:45-54. [PMID: 30880149 DOI: 10.1016/j.anaerobe.2019.03.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/28/2019] [Accepted: 03/13/2019] [Indexed: 01/17/2023]
Abstract
Bifidobacterium is beneficial for host health and exhibits different O2 sensitivity levels among species or strains via unknown mechanisms. Bifidobacterium bifidum JCM1255T, a type species of Bifidobacterium, is an O2-sensitive bacterium that can grow under low-O2 (5%) conditions, and the growth of this species is inhibited under high-O2 conditions (10% ∼) with accumulation of H2O2. We previously reported that NADH or NAD(P)H oxidase-active fractions were detected during purification using microaerobically grown B. bifidum cells, and the active enzyme was purified from the NADH oxidase-active fraction. The purified enzyme was identified as b-type dihydroorotate dehydrogenase (DHODb) and characterized as a dominant H2O2 producer in B. bifidum. In this study, we performed further purification of the enzyme from the NAD(P)H oxidase-active fraction and characterized the purified enzyme as a part of the H2O2 degradation system in B. bifidum. This purified enzyme was identified as thioredoxin reductase (TrxR); the NAD(P)H oxidase activity of this enzyme was not expressed in anaerobically grown B. bifidum, and mRNA expression was induced by O2 exposure. Furthermore, the purified B. bifidum TrxR interacted with recombinant alkyl hydroperoxide reductase (rAhpC) and exhibited NAD(P)H peroxidase activity. These results suggest that TrxR responds to O2 and protects B. bifidum from oxidative stress by degrading H2O2 via the TrxR-AhpC system.
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Affiliation(s)
- Takumi Satoh
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo, Japan.
| | | | - Kazuya Kobayashi
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Youichi Niimura
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo, Japan; Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Shinji Kawasaki
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo, Japan; Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
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19
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Shi Y, Yue T, Zhang Y, Wei J, Yuan Y. Surface Immunoproteomics Reveals Potential Biomarkers in Alicyclobacillus acidoterrestris. Front Microbiol 2018; 9:3032. [PMID: 30564227 PMCID: PMC6288362 DOI: 10.3389/fmicb.2018.03032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/23/2018] [Indexed: 11/21/2022] Open
Abstract
Alicyclobacillus acidoterrestris is a major putrefying bacterium that can cause pecuniary losses in the global juice industry. Current detection approaches are time-consuming and exhibit reduced specificity and sensitivity. In this study, an immunoproteomic approach was utilized to identify specific biomarkers from A. acidoterrestris for the development of new detection methods. Cell surface-associated proteins were extracted and separated by 2-D (two-dimensional) gel electrophoresis. Immunogenic proteins were detected by Western blot analysis using antisera against A. acidoterrestris. Twenty-two protein spots exhibiting immunogenicity were excised and eighteen of the associated spots were successfully identified by matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry (MALDI-TOF/TOF MS). These proteins were observed to be involved in energy and carbohydrate metabolism, transmembrane transport, response to oxidative stress, polypeptide biosynthesis, and molecule binding activity. This is the first report detailing the identification of cell surface-associated antigens of A. acidoterrestris. The identified immunogenic proteins could serve as potential targets for the development of novel detection methods.
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Affiliation(s)
- Yiheng Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Yipei Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Jianping Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture, Yangling, China.,National Engineering Research Center of Agriculture Integration Test, Yangling, China
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20
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Zuo F, Yu R, Xiao M, Khaskheli GB, Sun X, Ma H, Ren F, Zhang B, Chen S. Transcriptomic analysis of Bifidobacterium longum subsp. longum BBMN68 in response to oxidative shock. Sci Rep 2018; 8:17085. [PMID: 30459453 PMCID: PMC6244367 DOI: 10.1038/s41598-018-35286-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 10/18/2018] [Indexed: 02/08/2023] Open
Abstract
Bifidobacterium longum strain BBMN68 is sensitive to low concentrations of oxygen. A transcriptomic study was performed to identify candidate genes for B. longum BBMN68's response to oxygen treatment (3%, v/v). Expression of genes and pathways of B. longum BBMN68 involved in nucleotide metabolism, amino acid transport, protein turnover and chaperones increased, and that of carbohydrate metabolism, translation and biogenesis decreased to adapt to the oxidative stress. Notably, expression of two classes of ribonucleotide reductase (RNR), which are important for deoxyribonucleotide biosynthesis, was rapidly and persistently induced. First, the class Ib RNR NrdHIEF was immediately upregulated after 5 min oxygen exposure, followed by the class III RNR NrdDG, which was upregulated after 20 min of exposure. The upregulated expression of branched-chain amino acids and tetrahydrofolate biosynthesis-related genes occurred in bifidobacteria in response to oxidative stress. These change toward to compensate for DNA and protein damaged by reactive oxygen species (ROS). In addition, oxidative stress resulted in improved B. longum BBMN68 cell hydrophobicity and autoaggregation. These results provide a rich resource for our understanding of the response mechanisms to oxidative stress in bifidobacteria.
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Affiliation(s)
- Fanglei Zuo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.,Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.,Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, SE-10691, Stockholm, Sweden
| | - Rui Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.,Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China
| | - Man Xiao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.,Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China
| | - Gul Bahar Khaskheli
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.,Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China
| | - Xiaofei Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China
| | - Huiqin Ma
- Department of Fruit Tree Sciences, College of Horticulture, China Agricultural University, Beijing, 100193, P. R. China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China
| | - Bing Zhang
- Core Genomic Facility, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Shangwu Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China. .,Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, P. R. China.
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21
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O 2-inducible H 2O 2-forming NADPH oxidase is responsible for the hyper O 2 sensitivity of Bifidobacterium longum subsp. infantis. Sci Rep 2018; 8:10750. [PMID: 30013208 PMCID: PMC6048055 DOI: 10.1038/s41598-018-29030-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/04/2018] [Indexed: 01/04/2023] Open
Abstract
Bifidobacteria are beneficial anaerobes, and their O2 sensitivity levels differ among species as a function of unknown molecular mechanisms. Bifidobacterium longum subspecies infantis (B. infantis), a predominant colonizer of the gastrointestinal tract of infants, showed a hyper O2-sensitive growth profile with accompanying a production of H2O2. In this study, we characterized an NADPH oxidase as a key enzyme responsible for this microbe’s hyper O2 sensitivity. A dominant active elution peak of H2O2-forming NADPH oxidase activity was detected in the first step of column chromatography, and the purified NADPH oxidase (NPOX) was identified as a homolog of nitroreductase family proteins. The introduction of the gene encoding B. infantis NPOX (npoxA) into O2-tolerant Bifidobacterium minimum made the strain O2 sensitive and allowed it to produce H2O2. Knockout of the npoxA gene in B. infantis decreased the production of H2O2 and mitigated its B. infantis hyper O2 sensitivity. A transcript of B. infantis npoxA is induced by O2, suggesting that the aerobic production of toxic H2O2 is functionally conserved in B. infantis.
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22
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Ontañon OM, Landi C, Carleo A, Gagliardi A, Bianchi L, González PS, Agostini E, Bini L. What makes A. guillouiae SFC 500-1A able to co-metabolize phenol and Cr(VI)? A proteomic approach. JOURNAL OF HAZARDOUS MATERIALS 2018; 354:215-224. [PMID: 29753190 DOI: 10.1016/j.jhazmat.2018.04.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Acinetobacter guillouiae SFC 500-1A is an environmental bacterium able to efficiently co-remediate phenol and Cr(VI). To further understand the molecular mechanisms triggered in this strain during the bioremediation process, variations in the proteomic profile after treatment with phenol and phenol plus Cr(VI) were evaluated. The proteomic analysis revealed the induction of the β-ketoadipate pathway for phenol oxidation and the assimilation of degradation products through TCA cycle and glyoxylate shunt. Phenol exposure increased the abundance of proteins associated to energetic processes and ATP synthesis, but it also triggered cellular stress. The lipid bilayer was suggested as a target of phenol toxicity, and changing fatty acids composition seemed to be the bacterial response to protect the membrane integrity. The involvement of two flavoproteins in Cr(VI) reduction to Cr(III) was also proposed. The results suggested the important role of chaperones, antioxidant response and SOS-induced proteins in the ability of the strain to mitigate the damage generated by phenol and Cr(VI). This research contributes to elucidate the mechanisms involved in A. guillouiae SFC 500-1A tolerance and co-remediation of phenol and Cr(VI). Such information may result useful not only to improve its bioremediation efficiency but also to identify putative markers of resistance in environmental bacteria.
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Affiliation(s)
- Ornella Mailén Ontañon
- Department of Molecular Biology, National University of Rio Cuarto, Córdoba, Argentina; National Council for Scientific and Technological Research (CONICET), Argentina.
| | - Claudia Landi
- Laboratory of Functional Proteomics, Department of Life Sciences, University of Siena, Siena, Italy
| | - Alfonso Carleo
- Laboratory of Functional Proteomics, Department of Life Sciences, University of Siena, Siena, Italy; Current address: Department of Pulmonology, Hannover Medical School, Hannover, Germany
| | - Assunta Gagliardi
- Laboratory of Functional Proteomics, Department of Life Sciences, University of Siena, Siena, Italy; Current address: Centre for Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Laura Bianchi
- Laboratory of Functional Proteomics, Department of Life Sciences, University of Siena, Siena, Italy
| | - Paola Solange González
- Department of Molecular Biology, National University of Rio Cuarto, Córdoba, Argentina; National Council for Scientific and Technological Research (CONICET), Argentina
| | - Elizabeth Agostini
- Department of Molecular Biology, National University of Rio Cuarto, Córdoba, Argentina; National Council for Scientific and Technological Research (CONICET), Argentina
| | - Luca Bini
- Laboratory of Functional Proteomics, Department of Life Sciences, University of Siena, Siena, Italy
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23
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Xiang R, Shi J, Zhang H, Dong C, Liu L, Fu J, He X, Yan Y, Wu Z. Chlorophyll a fluorescence and transcriptome reveal the toxicological effects of bisphenol A on an invasive cyanobacterium, Cylindrospermopsis raciborskii. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 200:188-196. [PMID: 29775926 DOI: 10.1016/j.aquatox.2018.05.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/07/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
Bisphenol A has attracted worldwide attention due to its harmful effects on humans, animals and plants. In this study, the toxicological effects of BPA on Cylindrospermopsis raciborskii were assessed based on chlorophyll a fluorescence and transcriptome analyses. The results showed that the growth of C. raciborskii was significantly inhibited when BPA exceeded 0.1 mg L-1. A marked rise of phase J was observed at a concentration greater than 0.1 mg L-1, while a K phase appeared at 20 mg L-1. The chlorophyll a fluorescence parameters of RC/CS0, F0, φP0, φE0, and ψ0, underwent a significant decline under all treatments of BPA, whereas a significant increase in both VJ and M0 occurred under all concentrations of BPA. Additionally, ABS/RC and DIo/RC markedly increased at 10 mg L-1 and 20 mg L-1. The transcriptome analysis revealed that the genes of photosynthesis, including psbA, psbB, psbC, psbD, apcA, apcB, cpcA, and cpcB, as well as those of chlorophyll and carotenoid biosynthesis, namely hemN, acsF, chlL, chlN, chlP, crtB, pds, were all down-regulated. Moreover, BPA also inhibited the oxidative phosphorylation, glycolysis/gluconeogenesis, citrate cycle (TCA cycle), and fatty acid metabolism in C. raciborskii. Taken together, these results suggest BPA can negatively affect the expression of multiple genes and the vital energy metabolism process to arrest the growth and photosynthesis of C. raciborskii.
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Affiliation(s)
- Rong Xiang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Junqiong Shi
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Hongbo Zhang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Congcong Dong
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Li Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - JunKe Fu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Xinyu He
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Yanjun Yan
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China
| | - Zhongxing Wu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing, 400715, PR China.
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24
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Jiang Y, Zhang J, Zhao X, Zhao W, Yu Z, Chen C, Yang Z. Complete genome sequencing of exopolysaccharide-producing Lactobacillus plantarum K25 provides genetic evidence for the probiotic functionality and cold endurance capacity of the strain. Biosci Biotechnol Biochem 2018; 82:1225-1233. [PMID: 29564960 DOI: 10.1080/09168451.2018.1453293] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lactobacillus plantarum (L. plantarum) K25 is a probiotic strain isolated from Tibetan kefir. Previous studies showed that this exopolysaccharide (EPS)-producing strain was antimicrobial active and cold tolerant. These functional traits were evidenced by complete genome sequencing of strain K25 with a circular 3,175,846-bp chromosome and six circular plasmids, encoding 3365 CDSs, 16 rRNA genes and 70 tRNA genes. Genomic analysis of L. plantarum K25 illustrates that this strain contains the previous reported mechanisms of probiotic functionality and cold tolerance, involving plantaricins, lysozyme, bile salt hydrolase, chaperone proteins, osmoprotectant, oxidoreductase, EPSs and terpenes. Interestingly, strain K25 harbors more genes that function in defense mechanisms, and lipid transport and metabolism, in comparison with other L. plantarum strains reported. The present study demonstrates the comprehensive analysis of genes related to probiotic functionalities of an EPS-producing L. plantarum strain based on whole genome sequencing.
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Affiliation(s)
- Yunyun Jiang
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China
| | - Jian Zhang
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China
| | - Xiao Zhao
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China
| | - Wen Zhao
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China
| | - Zhijian Yu
- b Dongjun Dairy(Yucheng)Co., Ltd , Yucheng , China
| | - Chao Chen
- b Dongjun Dairy(Yucheng)Co., Ltd , Yucheng , China
| | - Zhennai Yang
- a Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China
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Guo Q, Li S, Xie Y, Zhang Q, Liu M, Xu Z, Sun H, Yang Y. The NAD +-dependent deacetylase, Bifidobacterium longum Sir2 in response to oxidative stress by deacetylating SigH (σ H) and FOXO3a in Bifidobacterium longum and HEK293T cell respectively. Free Radic Biol Med 2017; 108:929-939. [PMID: 28506746 DOI: 10.1016/j.freeradbiomed.2017.05.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/24/2017] [Accepted: 05/08/2017] [Indexed: 12/25/2022]
Abstract
Silent information regulator 2 (Sir2) enzymes which catalyze NAD+-dependent protein/histone deacetylation. The mammalian sirtuin family SIRT1, SIRT2, SIRT3 and SIRT6 can regulate oxidative stress. The probiotics (Bifidobacterium longum(B.longum) and Lactobacillus acidophilus(L. acidophilus)) have Sir2 gene family and have antioxidant activity in human body. it remains unknown whether probiotics Sir2 has a direct role in regulating oxidative stress. To this end, we knockout BL-sir2(sir2 B. longum) and LA-sir2(sir2 L.acidophilus) in low oxygen level. The antioxidant activities of two sir2 deficient strains was decreased, while when reintroduction of BL-sir2 and LA-sir2, the antioxidant activities were recoveried. In order to understand the regulation mechanism of probiotics Sir2 oxidation response. Then, we screened 65 acetylated protein, and found that SigH (σH) was a substrate of BL-Sir2. In addition, the acetylation level of σH decreased with the increase of BL-Sir2 level in B. longum. Thus, BL-Sir2 deacetylated σH in response to oxidative stress. Next, we transfected BL-Sir2 into H2O2-induced oxidative damage of 293T cells, BL-Sir2 increased the activity of manganese superoxide dismutase (MnSOD/SOD2) and catalase (CAT) and reduced reactive oxygen species(ROS). Then, we analyzed the differential gene by RNA sequencing and Gene ontology (GO) and found that BL-Sir2 regulated forkhead transcription factor (FOXO3a) mediated antioxidant genes in overexpressed BL-Sir2 HEK293T cells. Our study is the first to link probiotics Sir2 with oxidative stress and uncover the antioxidant mechanism of BL-Sir2 in B. longum itself and human body.
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Affiliation(s)
- Qing Guo
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Shiyu Li
- Institute of Genetic Engineering, Southern Medical University, Guangzhou 510515, China
| | - Yajie Xie
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Qian Zhang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Mengge Liu
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Zhenrui Xu
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Hanxiao Sun
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Yan Yang
- Research Center of Agricultural and Sideline Products Processing, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
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Effects upon metabolic pathways and energy production by Sb(III) and As(III)/Sb(III)-oxidase gene aioA in Agrobacterium tumefaciens GW4. PLoS One 2017; 12:e0172823. [PMID: 28241045 PMCID: PMC5328403 DOI: 10.1371/journal.pone.0172823] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Accepted: 02/11/2017] [Indexed: 12/23/2022] Open
Abstract
Agrobacterium tumefaciens GW4 is a heterotrophic arsenite [As(III)]/antimonite [Sb(III)]-oxidizing strain. The As(III) oxidase AioAB is responsible for As(III) oxidation in the periplasm and it is also involved in Sb(III) oxidation in Agrobacterium tumefaciens 5A. In addition, Sb(III) oxidase AnoA and cellular H2O2 are also responsible for Sb(III) oxidation in strain GW4. However, the deletion of aioA increased the Sb(III) oxidation efficiency in strain GW4. In the present study, we found that the cell mobility to Sb(III), ATP and NADH contents and heat release were also increased by Sb(III) and more significantly in the aioA mutant. Proteomics and transcriptional analyses showed that proteins/genes involved in Sb(III) oxidation and resistance, stress responses, carbon metabolism, cell mobility, phosphonate and phosphinate metabolism, and amino acid and nucleotide metabolism were induced by Sb(III) and were more significantly induced in the aioA mutant. The results suggested that Sb(III) oxidation may produce energy. In addition, without periplasmic AioAB, more Sb(III) would enter bacterial cells, however, the cytoplasmic AnoA and the oxidative stress response proteins were significantly up-regulated, which may contribute to the increased Sb(III) oxidation efficiency. Moreover, the carbon metabolism was also activated to generate more energy against Sb(III) stress. The generated energy may be used in Sb transportation, DNA repair, amino acid synthesis, and cell mobility, and may be released in the form of heat.
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Shrivastava AK, Pandey S, Dietz KJ, Singh PK, Singh S, Rai R, Rai LC. Overexpression of AhpC enhances stress tolerance and N2-fixation in Anabaena by upregulating stress responsive genes. Biochim Biophys Acta Gen Subj 2016; 1860:2576-2588. [PMID: 27487031 DOI: 10.1016/j.bbagen.2016.07.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/18/2016] [Accepted: 07/28/2016] [Indexed: 02/07/2023]
Abstract
The study explores the significance of peroxides in regulating the CO2- and N2-fixation capacities in Anabaena sp. PCC7120. To this end Anabaena strains were generated carrying an extra copy of ahpC (An+ahpC) or by deleting from their endogenous functional ahpC (AnΔahpC). AhpC levels were 2.2- to 6.0-fold higher in An+ahpC than in wild type. An+ahpC revealed 1.4- to 2-fold upregulation of photosystems I and II, nitrogenase, superoxide dismutase and catalase activities while same activities were 1.3- to 2.5-fold downregulated in the insertional mutant (AnΔahpC) compared to the wild type. Peroxide, superoxide and malondialdehyde contents were low in An+ahpC and high in AnΔahpC. Growth was inhibited in AnΔahpC by approximately 40-60% compared to a 33-40% enhanced growth in An+ahpC under selected stresses. Most interestingly, heterocyst frequency was increased in An+ahpC. In order to address transcriptional and posttranscriptional effects, transcripts of genes including groEL, fld, kat, gor, gst, dps, bfr, tf, sodA, dnaK, prx, uspA, pcs and apx were quantified and found to be increased 1.33- to 7.70-fold in unstressed and 1.76- to 13.80-fold in stressed An+ahpC. In a converse manner, they were downregulated by 1.20- to 7.50-fold in unstressed and 1.23 to 10.20-fold in stressed AnΔahpC. It is concluded that the level of AhpC controls a major set of metabolic and developmental genes in normal and stress conditions and thus likely is in the core of the redox regulatory system of Anabaena.
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Affiliation(s)
- Alok Kumar Shrivastava
- Department of Chemical Engineering, IIT, Banaras Hindu University, Varanasi-221005, India
| | - Sarita Pandey
- Cyanobacterial Stress Biology & Biotechnology Section, Molecular Biology Division, BARC, Mumbai-400094, India
| | - Karl Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld - 100131, Germany
| | - Prashant Kumar Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Lal Chand Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
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Salvetti E, Orrù L, Capozzi V, Martina A, Lamontanara A, Keller D, Cash H, Felis GE, Cattivelli L, Torriani S, Spano G. Integrate genome-based assessment of safety for probiotic strains: Bacillus coagulans GBI-30, 6086 as a case study. Appl Microbiol Biotechnol 2016; 100:4595-605. [PMID: 26952108 DOI: 10.1007/s00253-016-7416-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 12/17/2022]
Abstract
Probiotics are microorganisms that confer beneficial effects on the host; nevertheless, before being allowed for human consumption, their safety must be verified with accurate protocols. In the genomic era, such procedures should take into account the genomic-based approaches. This study aims at assessing the safety traits of Bacillus coagulans GBI-30, 6086 integrating the most updated genomics-based procedures and conventional phenotypic assays. Special attention was paid to putative virulence factors (VF), antibiotic resistance (AR) genes and genes encoding enzymes responsible for harmful metabolites (i.e. biogenic amines, BAs). This probiotic strain was phenotypically resistant to streptomycin and kanamycin, although the genome analysis suggested that the AR-related genes were not easily transferrable to other bacteria, and no other genes with potential safety risks, such as those related to VF or BA production, were retrieved. Furthermore, no unstable elements that could potentially lead to genomic rearrangements were detected. Moreover, a workflow is proposed to allow the proper taxonomic identification of a microbial strain and the accurate evaluation of risk-related gene traits, combining whole genome sequencing analysis with updated bioinformatics tools and standard phenotypic assays. The workflow presented can be generalized as a guideline for the safety investigation of novel probiotic strains to help stakeholders (from scientists to manufacturers and consumers) to meet regulatory requirements and avoid misleading information.
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Affiliation(s)
- Elisa Salvetti
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy.,APC Microbiome Institute, University College Cork, Western Road, Cork, T12 Y337, Ireland
| | - Luigi Orrù
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria, Genomics Research Centre, Via S. Protaso 302 Fiorenzuola d'Arda, 29017, Piacenza, Italy
| | - Vittorio Capozzi
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
| | - Alessia Martina
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Antonella Lamontanara
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria, Genomics Research Centre, Via S. Protaso 302 Fiorenzuola d'Arda, 29017, Piacenza, Italy
| | - David Keller
- Ganeden Biotech Inc., 5800 Landerbrook Drive Suite 300, Mayfield Heights, OH, 44124, USA
| | - Howard Cash
- Ganeden Biotech Inc., 5800 Landerbrook Drive Suite 300, Mayfield Heights, OH, 44124, USA
| | - Giovanna E Felis
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Luigi Cattivelli
- Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia Agraria, Genomics Research Centre, Via S. Protaso 302 Fiorenzuola d'Arda, 29017, Piacenza, Italy
| | - Sandra Torriani
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy.
| | - Giuseppe Spano
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122, Foggia, Italy
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Natalia D, Jumadila O, Anggraini ID, Meutia F, Puspasari F, Hasan K. Alkyl hydroperoxide reductase from Bacillus aquimaris
MKSC 6.2 protects Esherichia coli
from oxidative stress. J Basic Microbiol 2015; 56:834-7. [DOI: 10.1002/jobm.201500406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 10/03/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Dessy Natalia
- Division of Biochemistry Research; Faculty of Mathematics and Natural Sciences; Institut Teknologi Bandung; Bandung Indonesia
- Bioscience and Biotechnology Research Center; Institut Teknologi Bandung; Bandung Indonesia
| | - Ozi Jumadila
- Division of Biochemistry Research; Faculty of Mathematics and Natural Sciences; Institut Teknologi Bandung; Bandung Indonesia
| | - Irika Devi Anggraini
- Division of Biochemistry Research; Faculty of Mathematics and Natural Sciences; Institut Teknologi Bandung; Bandung Indonesia
| | - Febrina Meutia
- Division of Biochemistry Research; Faculty of Mathematics and Natural Sciences; Institut Teknologi Bandung; Bandung Indonesia
| | - Fernita Puspasari
- Bioscience and Biotechnology Research Center; Institut Teknologi Bandung; Bandung Indonesia
| | - Khomaini Hasan
- Bioscience and Biotechnology Research Center; Institut Teknologi Bandung; Bandung Indonesia
- Biochemistry Laboratory, Faculty of Medicine; Universitas Jenderal Achmad Yani; Cimahi West Java Indonesia
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Fu H, Yuan J, Gao H. Microbial oxidative stress response: Novel insights from environmental facultative anaerobic bacteria. Arch Biochem Biophys 2015; 584:28-35. [DOI: 10.1016/j.abb.2015.08.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/19/2015] [Accepted: 08/20/2015] [Indexed: 02/03/2023]
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Overexpression of Small Heat Shock Protein Enhances Heat- and Salt-Stress Tolerance of Bifidobacterium longum NCC2705. Curr Microbiol 2015; 71:8-15. [DOI: 10.1007/s00284-015-0811-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/23/2015] [Indexed: 12/24/2022]
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