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Hurley K, Folz J, Zgraggen J, Cruz TN, Diedrich S, Sturla SJ. Enzymatic Acrolein Production System and Its Impact on Human Cells. Chem Res Toxicol 2024; 37:1374-1381. [PMID: 39155646 PMCID: PMC11337209 DOI: 10.1021/acs.chemrestox.4c00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/21/2024] [Accepted: 06/27/2024] [Indexed: 08/20/2024]
Abstract
Acrolein is an environmental toxicant and is also generated by microbial metabolism in the intestinal tract. Aqueous acrolein rapidly dissipates from standard human cell culture media with nondetectable levels after 8 h, hindering cell-based studies to understand its biological impacts. Thus, we developed an extracellular acrolein biosynthesis system to continuously produce acrolein compatible with human cell culture conditions. The approach uses spermine as a precursor, amine oxidase found in fetal calf serum, and catalase to remove the hydrogen peroxide byproduct. We confirmed amine oxidase activity of calf serum using a colorimetric assay and further tested the requirement for catalase in the system to mitigate hydrogen peroxide-induced cytotoxicity. We calibrated responses of human colon cells to this enzymatic acrolein production system by comparing transcriptional responses, DNA adduct formation and cytotoxicity responses to either this system or pure acrolein exposures in a human colon cell line. Several genes related to oxidative stress including HMOX1, and the colorectal cancer-related gene SEMA4A were upregulated similarly between the enzymatic acrolein production system or pure acrolein. The acrolein-DNA adduct γ-OH-Acr-dG increased in a dose-dependent manner with spermine in the enzymatic acrolein production system, producing a maximum of 1065 adducts per 108 nucleosides when 400 μM spermine was used. This biosynthetic production method provides a relevant model for controlled acrolein exposure in cultured human cells and overcomes current limitations due to its physical properties and limited availability.
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Affiliation(s)
- Katherine
A. Hurley
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
| | - Jacob Folz
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
| | - Jasmin Zgraggen
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
| | - Tania N. Cruz
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
| | - Sabine Diedrich
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
| | - Shana J. Sturla
- Department of Health Sciences
and Technology, ETH Zürich, Zurich 8092, Switzerland
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2
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Hasnain MA, Kang D, Moon GS. Research trends of next generation probiotics. Food Sci Biotechnol 2024; 33:2111-2121. [PMID: 39130671 PMCID: PMC11315851 DOI: 10.1007/s10068-024-01626-9] [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: 04/08/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 08/13/2024] Open
Abstract
Gut represents one of the largest interfaces for the interaction of host factors and the environmental ones. Gut microbiota, largely dominated by bacterial community, plays a significant role in the health status of the host. The healthy gut microbiota fulfills several vital functions such as energy metabolism, disease protection, and immune modulation. Dysbiosis, characterized by microbial imbalance, can contribute to the development of various disorders, including intestinal, systemic, metabolic, and neurodegenerative conditions. Probiotics offer the potential to address dysbiosis and improve overall health. Advancements in high-throughput sequencing, bioinformatics, and omics have enabled mechanistic studies for the development of bespoke probiotics, referred to as next generation probiotics. These tailor-made probiotics have the potential to ameliorate specific disease conditions and thus fulfill the specific consumer needs. This review discusses recent updates on the most promising next generation probiotics, along with the challenges that must be addressed to translate this concept into reality.
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Affiliation(s)
- Muhammad Adeel Hasnain
- Major in IT·Biohealth Convergence, Department of IT·Energy Convergence, Graduate School, Korea National University of Transportation, Chungju, 27469 Republic of Korea
| | - Dae‑Kyung Kang
- Department of Animal Resources Science, Dankook University, Cheonan, 31116 Republic of Korea
| | - Gi-Seong Moon
- Major in IT·Biohealth Convergence, Department of IT·Energy Convergence, Graduate School, Korea National University of Transportation, Chungju, 27469 Republic of Korea
- Major in Biotechnology, Korea National University of Transportation, Jeungpyeong, 27909 Republic of Korea
- 4D Convergence Technology Institute, Korea National University of Transportation, Jeungpyeong, 27909 Republic of Korea
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3
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Liu FL, Abdugheni R, Ran CG, Zhou N, Liu SJ. Eubacterium album sp. nov., a butyrate-producing bacterium isolated from faeces of a healthy human. Int J Syst Evol Microbiol 2024; 74. [PMID: 38739685 DOI: 10.1099/ijsem.0.006380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024] Open
Abstract
An oval to rod-shaped, Gram-stain-positive, strictly anaerobic bacterium, designated LFL-14T, was isolated from the faeces of a healthy Chinese woman. Cells of the strain were non-spore-forming, grew optimally at 37 °C (growth range 30-45 °C) and pH 7.0 (growth range 6.0-9.0) under anaerobic conditions in the liquid modified Gifu anaerobic medium (mGAM). The result of 16S rRNA gene-based analysis indicated that LFL-14T shared an identity of 94.7 0% with Eubacterium ventriosum ATCC 27560T, indicating LFL-14T represented a novel taxon. The results of genome-based analysis revealed that the average nucleotide identity (ANI), the digital DNA-DNA hybridisation (dDDH) and average amino acid identity (AAI) between LFL-14T and its phylogenetically closest neighbour, Eubacterium ventriosum ATCC 27560T, were 77.0 %, 24.6 and 70.9 %, respectively, indicating that LFL-14T represents a novel species of the genus Eubacterium. The genome size of LFL-14T was 2.92 Mbp and the DNA G+C content was 33.14 mol%. We analysed the distribution of the genome of LFL-14T in cohorts of healthy individuals, type 2 diabetes patients (T2D) and patients with non-alcoholic fatty liver disease (NAFLD). We found that its abundance was higher in the T2D cohort, but it had a low average abundance of less than 0.2 % in all three cohorts. The percentages of frequency of occurrence in the T2D, healthy and NAFLD cohorts were 48.87 %, 16.72 % and 13.10 % respectively. The major cellular fatty acids of LFL-14T were C16 : 0 (34.4 %), C17 : 0 2-OH (21.4 %) and C14 : 0 (11.7 %). Additionally, the strain contained diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE), as well as unidentified phospholipids and unidentified glycolipids. The glucose fermentation products of LFL-14T were acetate and butyrate. In summary, On the basis of its chemotaxonomic, phenotypic, phylogenetic and phylogenomic properties, strain LFL-14T (= CGMCC 1.18005T = KCTC 25580T) is identified as representing a novel species of the genus Eubacterium, for which the name Eubacterium album sp. nov. is proposed.
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Affiliation(s)
- Feng-Lan Liu
- College of Life Sciences, Hebei University, Baoding, 071000, PR China
| | - Rashidin Abdugheni
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, PR China
| | - Cong-Guo Ran
- State Key Laboratory of Microbial Resources and Environmental Microbiology Research Center at Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR China
- University of the Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Nan Zhou
- State Key Laboratory of Microbial Resources and Environmental Microbiology Research Center at Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Shuang-Jiang Liu
- State Key Laboratory of Microbial Resources and Environmental Microbiology Research Center at Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, PR China
- University of the Chinese Academy of Sciences, Beijing, 100049, PR China
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4
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Al-Fakhrany OM, Elekhnawy E. Next-generation probiotics: the upcoming biotherapeutics. Mol Biol Rep 2024; 51:505. [PMID: 38619680 PMCID: PMC11018693 DOI: 10.1007/s11033-024-09398-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 02/28/2024] [Indexed: 04/16/2024]
Abstract
Recent and continuing advances in gut microbiome research have pointed out the role of the gut microbiota as an unexplored source of potentially beneficial probiotic microbes. Along the lines of these advances, both public awareness and acceptance of probiotics are increasing. That's why; academic and industrial research is dedicated to identifying and investigating new microbial strains for the development of next-generation probiotics (NGPs). At this time, there is a growing interest in NGPs as biotherapeutics that alter the gut microbiome and affect various diseases development. In this work, we have focused on some emergent and promising NGPs, specifically Eubacterium hallii, Faecalibacterium prausnitzii, Roseburia spp., Akkermansia muciniphila, and Bacteroides fragilis, as their presence in the gut can have an impact on the development of various diseases. Emerging studies point out the beneficial roles of these NGPs and open up novel promising therapeutic options. Interestingly, these NGPs were found to enhance gastrointestinal immunity, enhance immunotherapy efficacy in cancer patients, retain the intestinal barrier integrity, generate valuable metabolites, especially short-chain fatty acids, and decrease complications of chemotherapy and radiotherapy. Although many of these NGPs are considered promising for the prevention and treatment of several chronic diseases, research on humans is still lacking. Therefore, approval of these microbes from regulatory agencies is rare. Besides, some issues limit their wide use in the market, such as suitable methods for the culture and storage of these oxygen-sensitive microbes. The present review goes over the main points related to NGPs and gives a viewpoint on the key issues that still hinder their wide application. Furthermore, we have focused on the advancement in NGPs and human healthiness investigations by clarifying the limitations of traditional probiotic microorganisms, discussing the characteristics of emerging NGPs and defining their role in the management of certain ailments. Future research should emphasize the isolation, mechanisms of action of these probiotics, safety, and clinical efficacy in humans.
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Affiliation(s)
- Omnia Momtaz Al-Fakhrany
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Tanta University, Tanta, 31527, Egypt.
| | - Engy Elekhnawy
- Pharmaceutical Microbiology Department, Faculty of Pharmacy, Tanta University, Tanta, 31527, Egypt.
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5
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Ruiz-Saavedra S, Arboleya S, Nogacka AM, González del Rey C, Suárez A, Diaz Y, Gueimonde M, Salazar N, González S, de los Reyes-Gavilán CG. Commensal Fecal Microbiota Profiles Associated with Initial Stages of Intestinal Mucosa Damage: A Pilot Study. Cancers (Basel) 2023; 16:104. [PMID: 38201530 PMCID: PMC10778549 DOI: 10.3390/cancers16010104] [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: 11/03/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Progressive intestinal mucosal damage occurs over years prior to colorectal cancer (CRC) development. The endoscopic screening of polyps and histopathological examination are used clinically to determine the risk and progression of mucosal lesions. We analyzed fecal microbiota compositions using 16S rRNA gene-based metataxonomic analyses and the levels of short-chain fatty acids (SCFAs) using gas chromatography in volunteers undergoing colonoscopy and histopathological analyses to determine the microbiota shifts occurring at the early stages of intestinal mucosa alterations. The results were compared between diagnosis groups (nonpathological controls and polyps), between samples from individuals with hyperplastic polyps or conventional adenomas, and between grades of dysplasia in conventional adenomas. Some microbial taxa from the Bacillota and Euryarchaeota phyla were the most affected when comparing the diagnosis and histopathological groups. Deeper microbiota alterations were found in the conventional adenomas than in the hyperplastic polyps. The Ruminococcus torques group was enriched in both the hyperplastic polyps and conventional adenomas, whereas the family Eggerthellaceae was enriched only in the hyperplastic polyps. The abundance of Prevotellaceae, Oscillospiraceae, Methanobacteriaceae, Streptococcaceae, Christensenellaceae, Erysipelotrichaceae, and Clostridiaceae shifted in conventional adenomas depending on the grade of dysplasia, without affecting the major SCFAs. Our results suggest a reorganization of microbial consortia involved in gut fermentative processes.
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Affiliation(s)
- Sergio Ruiz-Saavedra
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Silvia Arboleya
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Alicja M. Nogacka
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Carmen González del Rey
- Department of Anatomical Pathology, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain;
| | - Adolfo Suárez
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
- Digestive Service, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Spain
| | - Ylenia Diaz
- Digestive Service, Carmen and Severo Ochoa Hospital, 33819 Cangas del Narcea, Spain;
| | - Miguel Gueimonde
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Nuria Salazar
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
| | - Sonia González
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
- Department of Functional Biology, University of Oviedo, 33006 Oviedo, Spain
| | - Clara G. de los Reyes-Gavilán
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33300 Villaviciosa, Spain; (S.R.-S.); (S.A.); (A.M.N.); (M.G.); (N.S.)
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain;
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Sionek B, Szydłowska A, Zielińska D, Neffe-Skocińska K, Kołożyn-Krajewska D. Beneficial Bacteria Isolated from Food in Relation to the Next Generation of Probiotics. Microorganisms 2023; 11:1714. [PMID: 37512887 PMCID: PMC10385805 DOI: 10.3390/microorganisms11071714] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/22/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Recently, probiotics are increasingly being used for human health. So far, only lactic acid bacteria isolated from the human gastrointestinal tract were recommended for human use as probiotics. However, more authors suggest that probiotics can be also isolated from unconventional sources, such as fermented food products of animal and plant origin. Traditional fermented products are a rich source of microorganisms, some of which may have probiotic properties. A novel category of recently isolated microorganisms with great potential of health benefits are next-generation probiotics (NGPs). In this review, general information of some "beneficial microbes", including NGPs and acetic acid bacteria, were presented as well as essential mechanisms and microbe host interactions. Many reports showed that NGP selected strains and probiotics from unconventional sources exhibit positive properties when it comes to human health (i.e., they have a positive effect on metabolic, human gastrointestinal, neurological, cardiovascular, and immune system diseases). Here we also briefly present the current regulatory framework and requirements that should be followed to introduce new microorganisms for human use. The term "probiotic" as used herein is not limited to conventional probiotics. Innovation will undoubtedly result in the isolation of potential probiotics from new sources with fascinating new health advantages and hitherto unforeseen functionalities.
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Affiliation(s)
- Barbara Sionek
- Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS), Nowoursynowska St. 159C, 02-776 Warszawa, Poland
| | - Aleksandra Szydłowska
- Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS), Nowoursynowska St. 159C, 02-776 Warszawa, Poland
| | - Dorota Zielińska
- Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS), Nowoursynowska St. 159C, 02-776 Warszawa, Poland
| | - Katarzyna Neffe-Skocińska
- Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS), Nowoursynowska St. 159C, 02-776 Warszawa, Poland
| | - Danuta Kołożyn-Krajewska
- Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS), Nowoursynowska St. 159C, 02-776 Warszawa, Poland
- Department of Dietetics and Food Studies, Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Al. Armii Krajowej 13/15, 42-200 Częstochowa, Poland
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7
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Chauveau A, Treyer A, Geirnaert A, Bircher L, Babst A, Abegg VF, Simões-Wüst AP, Lacroix C, Potterat O, Hamburger M. Intestinal permeability and gut microbiota interactions of pharmacologically active compounds in valerian and St. John's wort. Biomed Pharmacother 2023; 162:114652. [PMID: 37027987 DOI: 10.1016/j.biopha.2023.114652] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 04/09/2023] Open
Abstract
Phytomedicines such as valerian and St. John's wort are widely used for the treatment of sleeping disorders, anxiety and mild depression. They are perceived as safe alternatives to synthetic drugs, but limited information is available on the intestinal absorption and interaction with human intestinal microbiota of pharmacologically relevant constituents valerenic acid in valerian, and hyperforin and hypericin in St. John's wort. The intestinal permeability of these compounds and the antidepressant and anxiolytic drugs citalopram and diazepam was investigated in the Caco-2 cell model with bidirectional transport experiments. In addition, interaction of compounds and herbal extracts with intestinal microbiota was evaluated in artificial human gut microbiota. Microbiota-mediated metabolisation of compounds was assessed, and bacterial viability and short-chain fatty acids (SCFA) production were measured in the presence of compounds or herbal extracts. Valerenic acid and hyperforin were highly permeable in Caco-2 cell monolayers. Hypericin showed low-to-moderate permeability. An active transport process was potentially involved in the transfer of valerenic acid. Hyperforin and hypericin were mainly transported through passive transcellular diffusion. All compounds were not metabolized over 24 h in the artificial gut microbiota. Microbial SCFA production and bacterial viability was not substantially impaired nor promoted by exposure to the compounds or herbal extracts.
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Affiliation(s)
- Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Annelies Geirnaert
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Lea Bircher
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Angela Babst
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
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Merugu NK, Manapuram S, Chakraborty T, Karanam SK, Imandi SB. Mutagens in commercial food processing and its microbial transformation. Food Sci Biotechnol 2023; 32:599-620. [PMID: 37009045 PMCID: PMC10050501 DOI: 10.1007/s10068-022-01240-7] [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: 10/06/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 02/01/2023] Open
Abstract
Mutagens are chemical molecules that have the ability to damage DNA. Mutagens can enter into our body upon consumption of improperly cooked or processed food products such as high temperature or prolonged cooking duration. Mutagens are found in the food products can be classified into N-nitroso derivatives, polycyclic aromatic hydrocarbons, and heterocyclic aromatic amines. Food products with high fat and protein content are more prone to mutagenic formation. Microorganisms were found to be a potent weapon in the fight against various mutagens through biotransformation. Therefore, searching for the microorganisms which have the ability to transform mutagens and the development of techniques for the identification as well as detection of mutagens in food products is much needed. In the future, methods for the identification and detection of these mutagens as well as the identification of new and more potent microorganisms which can transform mutagens into non-mutagens are much needed.
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Affiliation(s)
- Narendra Kishore Merugu
- Department of Biotechnology, GITAM School of Technology, Gandhi Institute of Technology and Management (GITAM) Deemed to be University, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530 045 India
| | - Saikumar Manapuram
- Department of Biotechnology, GITAM School of Science, Gandhi Institute of Technology and Management (GITAM) Deemed to be University, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530 045 India
- Department of Genetic Toxicology, Vipragen Biosciences Private Limited, No. 67B, Hootagalli Industrial Area, Mysuru, Karnataka 570 018 India
| | - Tanushree Chakraborty
- Department of Biotechnology, GITAM School of Technology, Gandhi Institute of Technology and Management (GITAM) Deemed to be University, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530 045 India
- Department of Biotechnology, GITAM School of Science, Gandhi Institute of Technology and Management (GITAM) Deemed to be University, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530 045 India
| | - Sita Kumari Karanam
- Maharajah’s College of Pharmacy, Phool Baugh, Vizianagaram, Andhra Pradesh 535 002 India
| | - Sarat Babu Imandi
- Department of Biotechnology, GITAM School of Technology, Gandhi Institute of Technology and Management (GITAM) Deemed to be University, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh 530 045 India
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9
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Isenring J, Bircher L, Geirnaert A, Lacroix C. In vitro human gut microbiota fermentation models: opportunities, challenges, and pitfalls. MICROBIOME RESEARCH REPORTS 2023; 2:2. [PMID: 38045607 PMCID: PMC10688811 DOI: 10.20517/mrr.2022.15] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/12/2022] [Accepted: 01/09/2023] [Indexed: 12/05/2023]
Abstract
The human gut microbiota (HGM) plays a pivotal role in health and disease. Consequently, nutritional and medical research focusing on HGM modulation strategies as a means of improving host health is steadily increasing. In vitro HGM fermentation models offer a valid complement to human and animal studies when it comes to the mechanistic exploration of novel modulation approaches and their direct effects on HGM composition and activity, while excluding interfering host effects. However, in vitro cultivation of HGM can be challenging due to its high oxygen sensitivity and the difficulties of accurately modeling the physio-chemical complexity of the gut environment. Despite the increased use of in vitro HGM models, there is no consensus about appropriate model selection and operation, sometimes leading to major deficiencies in study design and result interpretation. In this review paper, we aim to analyze crucial aspects of the application, setup and operation, data validation and result interpretation of in vitro HGM models. When carefully designed and implemented, in vitro HGM modeling is a powerful strategy for isolating and investigating biotic and abiotic factors in the HGM, as well as evaluating their effects in a controlled environment akin to the gut. Furthermore, complementary approaches combining different in vitro and in vivo models can strengthen the design and interpretation of human studies.
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Affiliation(s)
| | | | | | - Christophe Lacroix
- Department of Health Sciences and Technology, ETH Zurich, Zürich 8092, Switzerland
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10
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Sun MC, Hu ZY, Li DD, Chen YX, Xi JH, Zhao CH. Application of the Reuterin System as Food Preservative or Health-Promoting Agent: A Critical Review. Foods 2022; 11:foods11244000. [PMID: 36553742 PMCID: PMC9778575 DOI: 10.3390/foods11244000] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/03/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
The reuterin system is a complex multi-component antimicrobial system produced by Limosilactobacillus reuteri by metabolizing glycerol. The system mainly includes 3-hydroxypropionaldehyde (3-HPA, reuterin), 3-HPA dimer, 3-HPA hydrate, acrolein and 3-hydroxypropionic acid, and has great potential to be applied in the food and medical industries due to its functional versatility. It has been reported that the reuterin system possesses regulation of intestinal flora and anti-infection, anti-inflammatory and anti-cancer activities. Typically, the reuterin system exerts strong broad-spectrum antimicrobial properties. However, the antimicrobial mechanism of the reuterin system remains unclear, and its toxicity is still controversial. This paper presents an updated review on the biosynthesis, composition, biological production, antimicrobial mechanisms, stability, toxicity and potential applications of the reuterin system. Challenges and opportunities of the use of the reuterin system as a food preservative or health-promoting agent are also discussed. The present work will allow researchers to accelerate their studies toward solving critical challenges obstructing industrial applications of the reuterin system.
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Affiliation(s)
- Mao-Cheng Sun
- College of Plant Science, Jilin University, Changchun 130062, China
- College of Food Science and Engineering, Changchun University, Changchun 130022, China
| | - Zi-Yi Hu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510316, China
| | - Dian-Dian Li
- College of Food Science and Engineering, Changchun University, Changchun 130022, China
| | - Yu-Xin Chen
- College of Food Science and Engineering, Changchun University, Changchun 130022, China
| | - Jing-Hui Xi
- College of Plant Science, Jilin University, Changchun 130062, China
- Correspondence: (J.-H.X.); (C.-H.Z.)
| | - Chang-Hui Zhao
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
- Correspondence: (J.-H.X.); (C.-H.Z.)
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11
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Bosch S, Acharjee A, Quraishi MN, Bijnsdorp IV, Rojas P, Bakkali A, Jansen EEW, Stokkers P, Kuijvenhoven J, Pham TV, Beggs AD, Jimenez CR, Struys EA, Gkoutos GV, de Meij TGJ, de Boer NKH. Integration of stool microbiota, proteome and amino acid profiles to discriminate patients with adenomas and colorectal cancer. Gut Microbes 2022; 14:2139979. [PMID: 36369736 PMCID: PMC9662191 DOI: 10.1080/19490976.2022.2139979] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Screening for colorectal cancer (CRC) reduces its mortality but has limited sensitivity and specificity. Aims We aimed to explore potential biomarker panels for CRC and adenoma detection and to gain insight into the interaction between gut microbiota and human metabolism in the presence of these lesions. METHODS This multicenter case-control cohort was performed between February 2016 and November 2019. Consecutive patients ≥18 years with a scheduled colonoscopy were asked to participate and divided into three age, gender, body-mass index and smoking status-matched subgroups: CRC (n = 12), adenomas (n = 21) and controls (n = 20). Participants collected fecal samples prior to bowel preparation on which proteome (LC-MS/MS), microbiota (16S rRNA profiling) and amino acid (HPLC) composition were assessed. Best predictive markers were combined to create diagnostic biomarker panels. Pearson correlation-based analysis on selected markers was performed to create networks of all platforms. RESULTS Combining omics platforms provided new panels which outperformed hemoglobin in this cohort, currently used for screening (AUC 0.98, 0.95 and 0.87 for CRC vs controls, adenoma vs controls and CRC vs adenoma, respectively). Integration of data sets revealed markers associated with increased blood excretion, stress- and inflammatory responses and pointed toward downregulation of epithelial integrity. CONCLUSIONS Integrating fecal microbiota, proteome and amino acids platforms provides for new biomarker panels that may improve noninvasive screening for adenomas and CRC, and may subsequently lead to lower incidence and mortality of colon cancer.
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Affiliation(s)
- Sofie Bosch
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Endocrinology Metabolism Institute, Amsterdam University Medical Centre, VU University Amsterdam, Amsterdam, The Netherlands,CONTACT Sofie Bosch Department of Gastroenterology and Hepatology, Amsterdam UMC, VU University Medical Center, De Boelelaan 1118, Amsterdam1081HZ, The Netherlands
| | - Animesh Acharjee
- College of Medical and Dental Sciences, Institute of Cancer and Genomic Sciences, Center for Computational Biology, University of Birmingham, Birmingham, UK,Institute of Translational Medicine, University Hospitals Birmingham NHS, Foundation Trust, UK,NIHR Surgical Reconstruction and Microbiology Research Center, University Hospital Birmingham, Birmingham, UK
| | - Mohammed Nabil Quraishi
- Department of Gastroenterology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK,Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK,Microbiome Treatment Center, University of Birmingham Microbiome Treatment Center, University of Birmingham, UK,Center for Liver and Gastroenterology Research, NIHR Birmingham Biomedical Research Center, University of Birmingham, Birmingham, UK
| | - Irene V Bijnsdorp
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands,Department of Urology, Amsterdam UMC, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Patricia Rojas
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Abdellatif Bakkali
- Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands
| | - Erwin EW Jansen
- Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands
| | - Pieter Stokkers
- Department of Gastroenterology and Hepatology, OLVG West, Amsterdam, The Netherlands
| | - Johan Kuijvenhoven
- Spaarne Gasthuis, Department of Gastroenterology and Hepatology, Hoofddorp and Haarlem, The Netherlands
| | - Thang V Pham
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Andrew D Beggs
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Connie R Jimenez
- Department of Medical Oncology, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands
| | - Eduard A Struys
- Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands
| | - Georgios V Gkoutos
- College of Medical and Dental Sciences, Institute of Cancer and Genomic Sciences, Center for Computational Biology, University of Birmingham, Birmingham, UK,Institute of Translational Medicine, University Hospitals Birmingham NHS, Foundation Trust, UK,NIHR Surgical Reconstruction and Microbiology Research Center, University Hospital Birmingham, Birmingham, UK,Microbiome Treatment Center, MRC Health Data Research UK (HDR UK), Birmingham, UK,Microbiome Treatment Center, NIHR Experimental Cancer Medicine Center, Birmingham, UK,Microbiome Treatment Center, NIHR Biomedical Research Center, University Hospital Birmingham, Birmingham, UK
| | - Tim GJ de Meij
- Department of Paediatric Gastroenterology, AG&M Research Institute, Amsterdam UMC, VU University Amsterdam, Amsterdam, The Netherlands
| | - Nanne KH de Boer
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology and Endocrinology Metabolism Institute, Amsterdam University Medical Centre, VU University Amsterdam, Amsterdam, The Netherlands
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12
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Zhang H, Duan Y, Cai F, Cao D, Wang L, Qiao Z, Hong Q, Li N, Zheng Y, Su M, Liu Z, Zhu B. Next-Generation Probiotics: Microflora Intervention to Human Diseases. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5633403. [PMID: 36440358 PMCID: PMC9683952 DOI: 10.1155/2022/5633403] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 06/06/2022] [Indexed: 11/02/2023]
Abstract
With the development of human genome sequencing and techniques such as intestinal microbial culture and fecal microbial transplantation, newly discovered microorganisms have been isolated, cultured, and researched. Consequently, many beneficial probiotics have emerged as next-generation probiotics (NGPs). Currently, "safety," "individualized treatment," and "internal interaction within the flora" are requirements of a potential NGPs. Furthermore, in the complex ecosystem of humans and microbes, it is challenging to identify the relationship between specific strains, specific flora, and hosts to warrant a therapeutic intervention in case of a disease. Thus, this review focuses on the progress made in NGPs and human health research by elucidating the limitations of traditional probiotics; summarizing the functions and strengths of Akkermansia muciniphila, Faecalibacterium prausnitzii, Bacteroides fragilis, Eubacterium hallii, and Roseburia spp. as NGPs; and determining the role of their intervention in treatment of certain diseases. Finally, we aim to provide a reference for developing new probiotics in the future.
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Affiliation(s)
- Huanchang Zhang
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Yunfeng Duan
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Feng Cai
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Demin Cao
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Lei Wang
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Zhenyi Qiao
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Qing Hong
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Nan Li
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Yuanrong Zheng
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Miya Su
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Zhenmin Liu
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai, China
| | - Baoli Zhu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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13
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Attard TM, Septer S, Lawson CE, Attard MI, Lee STM, Umar S. Microbiome insights into pediatric familial adenomatous polyposis. Orphanet J Rare Dis 2022; 17:416. [PMID: 36376984 PMCID: PMC9664625 DOI: 10.1186/s13023-022-02569-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/30/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Individuals with familial adenomatous polyposis (FAP) harbor numerous polyps with inevitable early progression to colon cancer. Complex microbiotic-tumor microenvironment perturbations suggest a dysbiotic relationship between polyp and microbiome. In this study, we performed comprehensive analyses of stool and tissue microbiome of pediatric FAP subjects and compared with unaffected cohabiting relatives through 16S V4 region amplicon sequencing and machine learning platforms. RESULTS Within our FAP and control patient population, Firmicutes and Bacteroidetes were the predominant phyla in the tissue and stool samples, while Proteobacteria dominated the polyp/non-polyp mucosa. A decline in Faecalibacterium in polyps contrasted with a decline in Bacteroides in the FAP stool. The alpha- and beta-diversity indices differed significantly within the polyp/non-polyp groups, with a concurrent shift towards lower diversity in polyps. In a limited 3-year longitudinal study, the relative abundance of Proteobacteria and Fusobacteria was higher in polyps compared to non-polyp and stool specimens over time. Through machine learning, we discovered that Archaeon_enrichment_culture_clone_A13, Micrococcus_luteus, and Eubacterium_hallii in stool and PL-11B10, S1-80, and Blastocatellaceae in tissues were significantly different between patients with and without polyps. CONCLUSIONS Detection of certain bacterial concentrations within stool or biopsied polyps could serve as adjuncts to current screening modalities to help identify higher-risk patients.
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Affiliation(s)
- Thomas M. Attard
- Department of Gastroenterology, Children’s Mercy Hospital, 1MO2.37, 2401 Gilham Road, Kansas City, MO 64108 USA
| | - Seth Septer
- Department of Pediatric Gastroenterology, Children’s Hospital Colorado, Aurora, CO USA
| | - Caitlin E. Lawson
- Division of Genetics, Children’s Mercy Hospital, Kansas City, MO USA
| | - Mark I. Attard
- Neonatal Unit, Aberdeen Maternity Hospital, Aberdeen, AB25 2ZL UK
| | - Sonny T. M. Lee
- Division of Biology, Kansas State University, Manhattan, KS USA
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, 3901 Rainbow Blvd, 4028 Wahl Hall East, Kansas City, KS 66160 USA
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14
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Ramirez Garcia A, Hurley K, Marastoni G, Diard M, Hofer S, Greppi A, Hardt WD, Lacroix C, Sturla SJ, Schwab C. Pathogenic and Commensal Gut Bacteria Harboring Glycerol/Diol Dehydratase Metabolize Glycerol and Produce DNA-Reactive Acrolein. Chem Res Toxicol 2022; 35:1840-1850. [PMID: 36116084 PMCID: PMC9580524 DOI: 10.1021/acs.chemrestox.2c00137] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Indexed: 12/20/2022]
Abstract
Bacteria harboring glycerol/diol dehydratase (GDH) encoded by the genes pduCDE metabolize glycerol and release acrolein during growth. Acrolein has antimicrobial activity, and exposure of human cells to acrolein gives rise to toxic and mutagenic responses. These biological responses are related to acrolein's high reactivity as a chemical electrophile that can covalently bind to cellular nucleophiles including DNA and proteins. Various food microbes and gut commensals transform glycerol to acrolein, but there is no direct evidence available for bacterial glycerol metabolism giving rise to DNA adducts. Moreover, it is unknown whether pathogens, such as Salmonella Typhymurium, catalyze this transformation. We assessed, therefore, acrolein formation by four GDH-competent strains of S. Typhymurium grown under either aerobic or anaerobic conditions in the presence of 50 mM glycerol. On the basis of analytical derivatization with a heterocyclic amine, all wild-type strains were observed to produce acrolein, but to different extents, and acrolein production was not detected in fermentations of a pduC-deficient mutant strain. Furthermore, we found that, in the presence of calf thymus DNA, acrolein-DNA adducts were formed as a result of bacterial glycerol metabolism by two strains of Limosilactobacillus reuteri, but not a pduCDE mutant strain. The quantification of the resulting adducts with increasing levels of glycerol up to 600 mM led to the production of up to 1.5 mM acrolein and 3600 acrolein-DNA adducts per 108 nucleosides in a model system. These results suggest that GDH-competent food microbes, gut commensals, and pathogens alike have the capacity to produce acrolein from glycerol. Further, the acrolein production can lead to DNA adduct formation, but requires high glycerol concentrations that are not available in the human gut.
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Affiliation(s)
- Alejandro Ramirez Garcia
- Laboratory
of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
- Laboratory
of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Katherine Hurley
- Laboratory
of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Giovanni Marastoni
- Laboratory
of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Médéric Diard
- Biozentrum, University of Basel, Basel 4056, Switzerland
- Institute
of Microbiology, Department of Biology, ETH Zürich, Zürich 8093, Switzerland
| | - Sophie Hofer
- Laboratory
of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Anna Greppi
- Laboratory
of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Wolf-Dietrich Hardt
- Institute
of Microbiology, Department of Biology, ETH Zürich, Zürich 8093, Switzerland
| | - Christophe Lacroix
- Laboratory
of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Shana J. Sturla
- Laboratory
of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
| | - Clarissa Schwab
- Laboratory
of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich 8092, Switzerland
- Department
of Biological and Chemical Engineering, Aarhus University, Aarhus 8000, Denmark
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15
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Kim R, Wang Y, Sims CE, Allbritton NL. A Platform for Co-Culture of Primary Human Colonic Epithelium With Anaerobic Probiotic Bacteria. Front Bioeng Biotechnol 2022; 10:890396. [PMID: 35757791 PMCID: PMC9213686 DOI: 10.3389/fbioe.2022.890396] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/09/2022] [Indexed: 11/17/2022] Open
Abstract
An in vitro platform was designed and optimized for the co-culture of probiotic anaerobic bacteria with a primary human colonic epithelium having a goal of assessing the anti-inflammatory impact of the probiotic bacteria. The device maintained a luminal O2 concentration at <1% while also supporting an oxygenated basal compartment at 10% for at least 72 h. Measurement of the transepithelial resistance of a confluent colonic epithelium showed high monolayer integrity while fluorescence assays demonstrated that the monolayer was comprised primarily of goblet cells and colonocytes, the two major differentiated cell subtypes of the colonic epithelium. High monolayer barrier function and viability were maintained during co-culture of the epithelium with the probiotic obligate anaerobe Anaerobutyricum hallii (A. hallii). Importantly the device supported a static co-culture of microbes and colonic epithelium mimicking the largely static or low flow conditions within the colonic lumen. A model inflamed colonic epithelium was generated by the addition of tumor necrosis factor-α (TNF-α) and lipopolysaccharide (LPS) to the basal and luminal epithelium sides, respectively. Co-culture of A. hallii with the LPS/TNF-α treated intestine diminished IL-8 secretion by ≥40% which could be mimicked by co-culture with the A. hallii metabolite butyrate. In contrast, co-culture of the inflamed epithelium with two strains of lactic acid-producing bacteria, Lactobacillus rhamnosus GG (LGG) and Bifidobacterium adolescentis (B. adolescentis), did not diminish epithelial IL-8 secretion. Co-culture with colonic epithelial cells from different donors demonstrated a consistent anti-inflammatory effect by A. hallii, but distinct responses to co-culture with LGG and B. adolescentis. The demonstrated system offers a simple and easily adopted platform for examining the physiologic impact of alterations in the intestinal epithelium that occur in the presence of probiotic bacteria and their metabolites.
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Affiliation(s)
- Raehyun Kim
- Department of Biological and Chemical Engineering, Hongik University, Sejong, South Korea
| | - Yuli Wang
- Department of Bioengineering, University of Washington, Seattle, WA, United States
| | - Christopher E. Sims
- Department of Bioengineering, University of Washington, Seattle, WA, United States
| | - Nancy L. Allbritton
- Department of Bioengineering, University of Washington, Seattle, WA, United States
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16
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Kumari M, Singh P, Nataraj BH, Kokkiligadda A, Naithani H, Azmal Ali S, Behare PV, Nagpal R. Fostering next-generation probiotics in human gut by targeted dietary modulation: An emerging perspective. Food Res Int 2021; 150:110716. [PMID: 34865747 DOI: 10.1016/j.foodres.2021.110716] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/07/2021] [Accepted: 09/15/2021] [Indexed: 12/16/2022]
Abstract
Emerging evidence and an in-depth understanding of the microbiome have helped in identifying beneficial commensals and their therapeutic potentials. Specific commensal taxa/ strains of the human gut microbiome have been positively associated with human health and recently termed as next-generation probiotics (NGPs). Of these, Akkermansia muciniphila, Ruminococcus bromii, Faecalibacterium prausnitzii, Anaerobutyricum hallii, and Roseburia intestinalis are the five most relevant gut-derived NGPs that have demonstrated therapeutic potential in managing metabolic diseases. Specific and natural dietary interventions can modulate the abundance and activity of these beneficial bacteria in the gut. Hence, the understanding of targeted stimulation of specific NGP by specific probiotic-targeted diets (PTD) is indispensable for the rational application of their combination. The supplementation of NGP with its specific PTD will help the strain(s) to compete with harmful microbes and acquire its niche. This combination would enhance the effectiveness of NGPs to be used as "live biotherapeutic products" or food nutraceuticals. Under the current milieu, we review various PTDs that influence the abundance of specific potential NGPs, and contemplates potential interactions between diet, microbes, and their effects on host health. Taking into account the study mentioned, we propose that combining NGPs will provide an alternate solution for developing the new diet in conjunction with PTD.
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Affiliation(s)
- Manorama Kumari
- Technofunctional Starters Lab, National Collection of Dairy Cultures, Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Parul Singh
- Proteomics and Cell Biology Lab, Animal Biotechnology Center, National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Basavaprabhu H Nataraj
- Technofunctional Starters Lab, National Collection of Dairy Cultures, Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Anusha Kokkiligadda
- Technofunctional Starters Lab, National Collection of Dairy Cultures, Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Harshita Naithani
- Technofunctional Starters Lab, National Collection of Dairy Cultures, Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Syed Azmal Ali
- Proteomics and Cell Biology Lab, Animal Biotechnology Center, National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Pradip V Behare
- Technofunctional Starters Lab, National Collection of Dairy Cultures, Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India.
| | - Ravinder Nagpal
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL 32306, USA.
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17
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Ramirez Garcia A, Zhang J, Greppi A, Constancias F, Wortmann E, Wandres M, Hurley K, Pascual-García A, Ruscheweyh HJ, Sturla SJ, Lacroix C, Schwab C. Impact of manipulation of glycerol/diol dehydratase activity on intestinal microbiota ecology and metabolism. Environ Microbiol 2021; 23:1765-1779. [PMID: 33587772 DOI: 10.1111/1462-2920.15431] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/02/2021] [Accepted: 02/09/2021] [Indexed: 12/19/2022]
Abstract
Glycerol/diol dehydratases (GDH) are enzymes that catalyse the production of propionate from 1,2-propanediol, and acrolein from glycerol. Acrolein reacts with dietary carcinogenic heterocyclic amines (HCA), reducing HCA mutagenicity, but is itself also an antimicrobial agent and toxicant. Gut microbial GDH activity has been suggested as an endogenous acrolein source; however, there is limited information on the potential of the intestinal microbiota to have GDH activity, and what impact it can have on the intestinal ecosystem and host health. We hypothesized that GDH activity of gut microbiota is determined by the abundance and distribution of GDH-active taxa and can be enhanced by supplementation of the GDH active Anaerobutyricum hallii, and tested this hypothesis combining quantitative profiling of gdh, model batch fermentations, microbiota manipulation, and kinetic modelling of acrolein formation. Our results suggest that GDH activity is a common trait of intestinal microbiota shared by a few taxa, which was dependent on overall gdh abundance. Anaerobutyricum hallii was identified as a key taxon in GDH metabolism, and its supplementation increased the rate of GDH activity and acrolein release, which enhanced the transformation of HCA and reduced fermentation activity. The findings of this first systematic study on acrolein release by intestinal microbiota indicate that dietary and microbial modulation might impact GDH activity, which may influence host health.
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Affiliation(s)
- Alejandro Ramirez Garcia
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.,Laboratory of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Jianbo Zhang
- Laboratory of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Anna Greppi
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Florentin Constancias
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Esther Wortmann
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Muriel Wandres
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Katherine Hurley
- Laboratory of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | | | - Hans-Joachim Ruscheweyh
- Institute of Microbiology, Department of Biology, and Swiss Institute of Bioinformatics, ETH Zürich, Zürich, Switzerland
| | - Shana J Sturla
- Laboratory of Toxicology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Clarissa Schwab
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.,Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
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18
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Aya V, Flórez A, Perez L, Ramírez JD. Association between physical activity and changes in intestinal microbiota composition: A systematic review. PLoS One 2021; 16:e0247039. [PMID: 33630874 PMCID: PMC7906424 DOI: 10.1371/journal.pone.0247039] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/31/2021] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION The intestinal microbiota comprises bacteria, fungi, archaea, protists, helminths and viruses that symbiotically inhabit the digestive system. To date, research has provided limited data on the possible association between an active lifestyle and a healthy composition of human microbiota. This review was aimed to summarize the results of human studies comparing the microbiome of healthy individuals with different physical activity amounts. METHODS We searched Medline/Ovid, NIH/PubMed, and Academic Search Complete between August-October 2020. Inclusion criteria comprised: (a) cross-sectional studies focused on comparing gut microbiome among subjects with different physical activity levels; (b) studies describing human gut microbiome responses to any type of exercise stimulus; (c) studies containing healthy adult women and men. We excluded studies containing diet modifications, probiotic or prebiotic consumption, as well as studies focused on diabetes, hypertension, cancer, hormonal dysfunction. Methodological quality and risk of bias for each study were assessed using the Risk Of Bias In Non-randomized Studies-of Interventions tool. The results from cross-sectional and longitudinal studies are shown independently. RESULTS A total of 17 articles were eligible for inclusion: ten cross-sectional and seven longitudinal studies. Main outcomes vary significantly according to physical activity amounts in longitudinal studies. We identified discrete changes in diversity indexes and relative abundance of certain bacteria in active people. CONCLUSION As literature in this field is rapidly growing, it is important that studies incorporate diverse methods to evaluate other aspects related to active lifestyles such as sleep and dietary patterns. Exploration of other groups such as viruses, archaea and parasites may lead to a better understanding of gut microbiota adaptation to physical activity and sports and its potentially beneficial effects on host metabolism and endurance.
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Affiliation(s)
- Viviana Aya
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Alberto Flórez
- Grupo In-Novum Educatio, Facultad de Educación, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Luis Perez
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Juan David Ramírez
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
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19
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Liang N, Neužil-Bunešová V, Tejnecký V, Gänzle M, Schwab C. 3-Hydroxypropionic acid contributes to the antibacterial activity of glycerol metabolism by the food microbe Limosilactobacillus reuteri. Food Microbiol 2021; 98:103720. [PMID: 33875197 DOI: 10.1016/j.fm.2020.103720] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/03/2020] [Accepted: 12/19/2020] [Indexed: 11/27/2022]
Abstract
Strains of Limosilactobacillus reuteri are used as starter and bioprotective cultures and contribute to the preservation of food through the production of fermentation metabolites lactic and acetic acid, and of the antimicrobial reuterin. Reuterin consists of acrolein and 3-hydroxypropionaldehyde (3-HPA), which can be further metabolized to 1,3-propanediol and 3-hydroxypropionic acid (3-HP). While reuterin has been the focus of many investigations, the contribution of 3-HP to the antimicrobial activity of food related reuterin-producers is unknown. We show that the antibacterial activity of 3-HP was stronger at pH 4.8 compared to pH 5.5 and 6.6. Gram-positive bacteria were in general more resistant against 3-HP and propionic acid than Gram-negative indicator strains including common food pathogens, while spoilage yeast and molds were not inhibited by ≤ 640 mM 3-HP. The presence of acrolein decreased the minimal inhibitory activity of 3-HP against E. coli indicating synergistic antibacterial activity. 3-HP was formed during the growth of the reuterin-producers, and by resting cells of L. reuteri DSM 20016. Taken together, this study shows that food-related reuterin producers strains synthesize a second antibacterial compound, which might be of relevance when strains are added as starter or bioprotective cultures to food products.
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Affiliation(s)
- Nuanyi Liang
- Department of Food Science, University of Alberta, Edmonton, Canada
| | - Věra Neužil-Bunešová
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Kamycka 129, Prague 6, 165 00 Prague, Czechia
| | - Václav Tejnecký
- Department of Soil Science and Soil Protection, Czech University of Life Sciences Prague, Kamycka 129, 165 00, Prague 6, Czech Republic
| | - Michael Gänzle
- Department of Food Science, University of Alberta, Edmonton, Canada
| | - Clarissa Schwab
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Kamycka 129, Prague 6, 165 00 Prague, Czechia; Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10, 8000, Aarhus C, Denmark.
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20
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Loke YL, Chew MT, Ngeow YF, Lim WWD, Peh SC. Colon Carcinogenesis: The Interplay Between Diet and Gut Microbiota. Front Cell Infect Microbiol 2020; 10:603086. [PMID: 33364203 PMCID: PMC7753026 DOI: 10.3389/fcimb.2020.603086] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/28/2020] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) incidence increases yearly, and is three to four times higher in developed countries compared to developing countries. The well-known risk factors have been attributed to low physical activity, overweight, obesity, dietary consumption including excessive consumption of red processed meats, alcohol, and low dietary fiber content. There is growing evidence of the interplay between diet and gut microbiota in CRC carcinogenesis. Although there appears to be a direct causal role for gut microbes in the development of CRC in some animal models, the link between diet, gut microbes, and colonic carcinogenesis has been established largely as an association rather than as a cause-and-effect relationship. This is especially true for human studies. As essential dietary factors influence CRC risk, the role of proteins, carbohydrates, fat, and their end products are considered as part of the interplay between diet and gut microbiota. The underlying molecular mechanisms of colon carcinogenesis mediated by gut microbiota are also discussed. Human biological responses such as inflammation, oxidative stress, deoxyribonucleic acid (DNA) damage can all influence dysbiosis and consequently CRC carcinogenesis. Dysbiosis could add to CRC risk by shifting the effect of dietary components toward promoting a colonic neoplasm together with interacting with gut microbiota. It follows that dietary intervention and gut microbiota modulation may play a vital role in reducing CRC risk.
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Affiliation(s)
- Yean Leng Loke
- Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, Petaling Jaya, Malaysia
| | - Ming Tsuey Chew
- Centre for Biomedical Physics, School of Healthcare and Medical Sciences, Sunway University, Petaling Jaya, Malaysia
| | - Yun Fong Ngeow
- Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Malaysia.,Centre for Research on Communicable Diseases, Universiti Tunku Abdul Rahman, Kajang, Malaysia
| | - Wendy Wan Dee Lim
- Department of Gastroenterology, Sunway Medical Centre, Petaling Jaya, Malaysia
| | - Suat Cheng Peh
- Ageing Health and Well-Being Research Centre, Sunway University, Petaling Jaya, Malaysia.,Department of Medical Sciences, School of Healthcare and Medical Sciences, Sunway University, Petaling Jaya, Malaysia
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21
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Mukherjee A, Lordan C, Ross RP, Cotter PD. Gut microbes from the phylogenetically diverse genus Eubacterium and their various contributions to gut health. Gut Microbes 2020; 12:1802866. [PMID: 32835590 PMCID: PMC7524325 DOI: 10.1080/19490976.2020.1802866] [Citation(s) in RCA: 253] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/10/2020] [Accepted: 07/22/2020] [Indexed: 02/06/2023] Open
Abstract
Over the last two decades our understanding of the gut microbiota and its contribution to health and disease has been transformed. Among a new 'generation' of potentially beneficial microbes to have been recognized are members of the genus Eubacterium, who form a part of the core human gut microbiome. The genus consists of phylogenetically, and quite frequently phenotypically, diverse species, making Eubacterium a taxonomically unique and challenging genus. Several members of the genus produce butyrate, which plays a critical role in energy homeostasis, colonic motility, immunomodulation and suppression of inflammation in the gut. Eubacterium spp. also carry out bile acid and cholesterol transformations in the gut, thereby contributing to their homeostasis. Gut dysbiosis and a consequently modified representation of Eubacterium spp. in the gut, have been linked with various human disease states. This review provides an overview of Eubacterium species from a phylogenetic perspective, describes how they alter with diet and age and summarizes its association with the human gut and various health conditions.
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Affiliation(s)
- Arghya Mukherjee
- Department of Food Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
| | - Cathy Lordan
- Department of Food Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
- School of Microbiology, University College Cork, Cork, Ireland
| | - R. Paul Ross
- School of Microbiology, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Paul D. Cotter
- Department of Food Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
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22
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Yadav M, Chauhan NS. Overview of the rules of the microbial engagement in the gut microbiome: a step towards microbiome therapeutics. J Appl Microbiol 2020; 130:1425-1441. [PMID: 33022786 DOI: 10.1111/jam.14883] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/18/2020] [Accepted: 09/26/2020] [Indexed: 12/14/2022]
Abstract
Human gut microbiome is a diversified, resilient, immuno-stabilized, metabolically active and physiologically essential component of the human body. Scientific explorations have been made to seek in-depth information about human gut microbiome establishment, microbiome functioning, microbiome succession, factors influencing microbial community dynamics and the role of gut microbiome in health and diseases. Extensive investigations have proposed the microbiome therapeutics as a futuristic medicine for various physiological and metabolic disorders. A comprehensive outlook of microbial colonization, host-microbe interactions, microbial adaptation, commensal selection and immuno-survivability is still required to catalogue the essential genetic and physiological features for the commensal engagement. Evolution of a structured human gut microbiome relies on the microbial flexibility towards genetic, immunological and physiological adaptation in the human gut. Key features for commensalism could be utilized in developing tailor-made microbiome-based therapy to overcome various physiological and metabolic disorders. This review describes the key genetics and physiological traits required for host-microbe interaction and successful commensalism to institute a human gut microbiome.
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Affiliation(s)
- M Yadav
- Department of Biochemistry, Maharshi Dayanand University, Rohtak, Haryana, India
| | - N S Chauhan
- Department of Biochemistry, Maharshi Dayanand University, Rohtak, Haryana, India
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23
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Elmassry MM, Zayed A, Farag MA. Gut homeostasis and microbiota under attack: impact of the different types of food contaminants on gut health. Crit Rev Food Sci Nutr 2020; 62:738-763. [DOI: 10.1080/10408398.2020.1828263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Moamen M. Elmassry
- Department of Biological Sciences, Texas Tech University, Lubbock, Texas, USA
| | - Ahmed Zayed
- Department of Pharmacognosy, College of Pharmacy, Tanta University, Tanta, Egypt
- Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Mohamed A. Farag
- Department of Pharmacognosy, College of Pharmacy, Cairo University, Cairo, Egypt
- Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, New Cairo, Egypt
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24
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Egerland Bueno B, Américo Soares L, Quispe-Arpasi D, Kimiko Sakamoto I, Zhang Y, Amancio Varesche MB, Ribeiro R, Tommaso G. Anaerobic digestion of aqueous phase from hydrothermal liquefaction of Spirulina using biostimulated sludge. BIORESOURCE TECHNOLOGY 2020; 312:123552. [PMID: 32502889 DOI: 10.1016/j.biortech.2020.123552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Hydrothermal liquefaction is a process that converts wet biomass into biofuels, more specifically bio-crude oil. During the process, post hydrothermal liquefaction waste water (PHWW) is generated, rich in nutrient and organic matter, however potentially toxic. Anaerobic digestion of PHWW from Spirulina, was evaluated using biostimulated sludge as a strategy to optimize the process. The biostimulation was conducted in a sequential batch reactor fed with organic acids and methanol aiming at development of acetogenic and methanogenic microorganism. Anaerobic biodegradability batch assays were performed, with biostimulated sludge and with non-biostimulated sludge, using increasing PHWW concentrations. Biostimulated sludge were more favourable for reaching higher methane yields at higher organic matter concentrations in comparison to non-biostimulated sludge, presenting less inhibition at conditions tested. Biostimulation was a key process to select and favour potential microorganisms involved in specialized uptake of recalcitrant compounds, such as Mesotoga and Methanomethylovorans.
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Affiliation(s)
- Beatriz Egerland Bueno
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Laís Américo Soares
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Diana Quispe-Arpasi
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Isabel Kimiko Sakamoto
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 W Pennsylvania Avenue, Urbana, IL 61801, USA
| | - Maria Bernadete Amancio Varesche
- Laboratory of Biological Processes, Department of Hydraulics and Sanitation, School of Engineering of São Carlos, University of São Paulo, 1100, João Dagnone Avenue, São Carlos 13563120, Brazil
| | - Rogers Ribeiro
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Department of Food Engineering, University of São Paulo, 225, Duque de Caxias Norte, Pirassununga, São Paulo 13635-900, Brazil.
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25
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Andrade JC, Almeida D, Domingos M, Seabra CL, Machado D, Freitas AC, Gomes AM. Commensal Obligate Anaerobic Bacteria and Health: Production, Storage, and Delivery Strategies. Front Bioeng Biotechnol 2020; 8:550. [PMID: 32582673 PMCID: PMC7291883 DOI: 10.3389/fbioe.2020.00550] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 05/07/2020] [Indexed: 12/12/2022] Open
Abstract
In the last years several human commensals have emerged from the gut microbiota studies as potential probiotics or therapeutic agents. Strains of human gut inhabitants such as Akkermansia, Bacteroides, or Faecalibacterium have shown several interesting bioactivities and are thus currently being considered as food supplements or as live biotherapeutics, as is already the case with other human commensals such as bifidobacteria. The large-scale use of these bacteria will pose many challenges and drawbacks mainly because they are quite sensitive to oxygen and/or very difficult to cultivate. This review highlights the properties of some of the most promising human commensals bacteria and summarizes the most up-to-date knowledge on their potential health effects. A comprehensive outlook on the potential strategies currently employed and/or available to produce, stabilize, and deliver these microorganisms is also presented.
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Affiliation(s)
- José Carlos Andrade
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Gandra, Portugal
| | - Diana Almeida
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Melany Domingos
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Catarina Leal Seabra
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Daniela Machado
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Ana Cristina Freitas
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Ana Maria Gomes
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
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26
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Vacca M, Celano G, Calabrese FM, Portincasa P, Gobbetti M, De Angelis M. The Controversial Role of Human Gut Lachnospiraceae. Microorganisms 2020; 8:E573. [PMID: 32326636 PMCID: PMC7232163 DOI: 10.3390/microorganisms8040573] [Citation(s) in RCA: 784] [Impact Index Per Article: 196.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/05/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023] Open
Abstract
The complex polymicrobial composition of human gut microbiota plays a key role in health and disease. Lachnospiraceae belong to the core of gut microbiota, colonizing the intestinal lumen from birth and increasing, in terms of species richness and their relative abundances during the host's life. Although, members of Lachnospiraceae are among the main producers of short-chain fatty acids, different taxa of Lachnospiraceae are also associated with different intra- and extraintestinal diseases. Their impact on the host physiology is often inconsistent across different studies. Here, we discuss changes in Lachnospiraceae abundances according to health and disease. With the aim of harnessing Lachnospiraceae to promote human health, we also analyze how nutrients from the host diet can influence their growth and how their metabolites can, in turn, influence host physiology.
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Affiliation(s)
- Mirco Vacca
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy; (M.V.); (F.M.C.); (M.D.A.)
| | - Giuseppe Celano
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy; (M.V.); (F.M.C.); (M.D.A.)
| | - Francesco Maria Calabrese
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy; (M.V.); (F.M.C.); (M.D.A.)
| | - Piero Portincasa
- Clinica Medica “A. Murri”, Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, 70121 Bari, Italy
| | - Marco Gobbetti
- Faculty of Science and Technology, Free University of Bozen, 39100 Bolzano, Italy;
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy; (M.V.); (F.M.C.); (M.D.A.)
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27
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Khan S, Chousalkar KK. Short-term feeding of probiotics and synbiotics modulates caecal microbiota during Salmonella Typhimurium infection but does not reduce shedding and invasion in chickens. Appl Microbiol Biotechnol 2019; 104:319-334. [PMID: 31758235 DOI: 10.1007/s00253-019-10220-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/07/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022]
Abstract
Positive modulation of gut microbiota in laying chickens may offer a strategy for reduction of Salmonella Typhimurium shedding and production of safer poultry products. In the current study, the caecal luminal microbiota of laying chicks was studied using 16S rRNA amplicon sequencing on DNA obtained from the chicks that were offered supplementation with commercial probiotics, synbiotics and/or Salmonella Typhimurium challenge. The load of Salmonella Typhimurium in various organs was quantified. Irrespective of the probiotics and synbiotics supplementation and Salmonella Typhimurium challenge, caecal microbiota was dominated by 22 distinct bacterial genera and 14 families that clustered into Actinobacteria, Proteobacteria and Firmicutes at phylum level. Taken together, probiotics and synbiotics supplementation increased (false discovery rate; FDR < 0.05) the abundance of Ruminococcus, Trabulsiella, Bifidobacterium, Holdemania and Oscillospira, indicating their role in maintaining gut health through lowering luminal pH and digestion of complex polysaccharides. Salmonella Typhimurium challenge decreased the abundance of Trabulsiella, Oscillospira, Holdemania, Coprococcus, Bifidobacterium and Lactobacillus and increased Klebsiella and Escherichia, indicating its role in caecal dysbiosis. Although probiotics and synbiotics supplementation positively modulated the caecal microbiota, they were not effective in significantly (P > 0.05) reducing Salmonella Typhimurium load in caecal tissue and invasion into vital organs such as liver and spleen. The early colonisation of laying chick caeca by probiotics and synbiotics had the potential to positively influence luminal microbiota; however, the microbial abundance and diversity were not sufficient to significantly reduce the shedding of Salmonella Typhimurium in faeces or invasion into internal organs during this study.
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Affiliation(s)
- Samiullah Khan
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, South Australia, 5371, Australia
| | - Kapil K Chousalkar
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, South Australia, 5371, Australia.
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28
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Wosinska L, Cotter PD, O'Sullivan O, Guinane C. The Potential Impact of Probiotics on the Gut Microbiome of Athletes. Nutrients 2019; 11:E2270. [PMID: 31546638 PMCID: PMC6835687 DOI: 10.3390/nu11102270] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/05/2019] [Accepted: 09/19/2019] [Indexed: 12/19/2022] Open
Abstract
There is accumulating evidence that physical fitness influences the gut microbiome and as a result, promotes health. Indeed, exercise-induced alterations in the gut microbiome can influence health parameters crucial to athletic performance, specifically, immune function, lower susceptibility to infection, inflammatory response and tissue repair. Consequently, maintenance of a healthy gut microbiome is essential for an athlete's health, training and performance. This review explores the effect of exercise on the microbiome while also investigating the effect of probiotics on various potential consequences associated with over-training in athletes, as well as their associated health benefits.
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Affiliation(s)
- Laura Wosinska
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland.
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Orla O'Sullivan
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
- APC Microbiome Ireland, T12 YT20 Cork, Ireland.
| | - Caitriona Guinane
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland.
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29
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Zhang J, Lacroix C, Wortmann E, Ruscheweyh HJ, Sunagawa S, Sturla SJ, Schwab C. Gut microbial beta-glucuronidase and glycerol/diol dehydratase activity contribute to dietary heterocyclic amine biotransformation. BMC Microbiol 2019; 19:99. [PMID: 31096909 PMCID: PMC6524314 DOI: 10.1186/s12866-019-1483-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 05/07/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Consuming red and processed meat has been associated with an increased risk of colorectal cancer (CRC), which is partly attributed to exposure to carcinogens such as heterocyclic amines (HCA) formed during cooking and preservation processes. The interaction of gut microbes and HCA can result in altered bioactivities and it has been shown previously that human gut microbiota can transform mutagenic HCA to a glycerol conjugate with reduced mutagenic potential. However, the major form of HCA in the colon are glucuronides (HCA-G) and it is not known whether these metabolites, via stepwise microbial hydrolysis and acrolein conjugation, are viable precursors for glycerol conjugated metabolites. We hypothesized that such a process could be concurrently catalyzed by bacterial beta-glucuronidase (B-GUS) and glycerol/diol dehydratase (GDH) activity. We therefore investigated how the HCA-G PhIP-N2-β-D-glucuronide (PhIP-G), a representative liver metabolite of PhIP (2-Amino-1-methyl-6-phenylimidazo [4,5-b] pyridine), which is the most abundant carcinogenic HCA in well-cooked meat, is transformed by enzymatic activity of human gut microbial representatives of the phyla Firmicutes, Bacteroidetes, and Proteobacteria. RESULTS We employed a combination of growth and enzymatic assays, and a bioanalysis approach combined with metagenomics. B-GUS of Faecalibacterium prausnitzii converted PhIP-G to PhIP and GDH of Flavonifractor plautii, Blautia obeum, Eubacterium hallii, and Lactobacillus reuteri converted PhIP to PhIP-M1 in the presence of glycerol. In addition, B-GUS- and GDH-positive bacteria cooperatively converted PhIP-G to PhIP-M1. A screen of genes encoding B-GUS and GDH was performed for fecal microbiome data from healthy individuals (n = 103) and from CRC patients (n = 53), which revealed a decrease in abundance of taxa with confirmed GDH and HCA transformation activity in CRC patients. CONCLUSIONS This study for the first time demonstrates that gut microbes mediate the stepwise transformation of PhIP-G to PhIP-M1 via the intermediate production of PhIP. Findings from this study suggest that targeted manipulation with gut microbes bearing specific functions, or dietary glycerol supplementation might modify gut microbial activity to reduce HCA-induced CRC risk.
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Affiliation(s)
- Jianbo Zhang
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.,Present Address: Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Christophe Lacroix
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Esther Wortmann
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | | | | | - Shana J Sturla
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Clarissa Schwab
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.
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30
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Almeida D, Machado D, Andrade JC, Mendo S, Gomes AM, Freitas AC. Evolving trends in next-generation probiotics: a 5W1H perspective. Crit Rev Food Sci Nutr 2019; 60:1783-1796. [PMID: 31062600 DOI: 10.1080/10408398.2019.1599812] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In recent years, scientific community has been gathering increasingly more insight on the dynamics that are at play in metabolic and inflammatory disorders. These rapidly growing conditions are reaching epidemic proportions, bringing clinicians and researcher's new challenges. The specific roles and modulating properties that beneficial/probiotic bacteria hold in the context of the gut ecosystem seem to be key to avert these inflammatory and diet-related disorders. Faecalibacterium prausnitzii, Akkermansia muciniphila and Eubacterium hallii have been identified as candidates for next generation probiotics (NGPs) with exciting potential for the prevention and treatment of such of dysbiosis-associated diseases. The challenges of these non-conventional native gut bacteria lie mainly on their extreme sensitivity to O2 traces. If these strains are to be used successfully in food, supplements or drugs they need to be stable and active in humans. In the present review, we present an overall perspective of the most updated scientific literature on the newly called NGPs through the 5W1H (What, Why, Who, Where, When, and How) method, an innovative and attractive problem-solving approach that provides the reader an effective understanding of the issue at hand.
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Affiliation(s)
- Diana Almeida
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal.,Department of Biology and CESAM, University of Aveiro, Aveiro, Portugal
| | - Daniela Machado
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - José Carlos Andrade
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Gandra PRD, Portugal
| | - Sónia Mendo
- Department of Biology and CESAM, University of Aveiro, Aveiro, Portugal
| | - Ana Maria Gomes
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - Ana Cristina Freitas
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
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Mauerhofer LM, Pappenreiter P, Paulik C, Seifert AH, Bernacchi S, Rittmann SKMR. Methods for quantification of growth and productivity in anaerobic microbiology and biotechnology. Folia Microbiol (Praha) 2019; 64:321-360. [PMID: 30446943 PMCID: PMC6529396 DOI: 10.1007/s12223-018-0658-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022]
Abstract
Anaerobic microorganisms (anaerobes) possess a fascinating metabolic versatility. This characteristic makes anaerobes interesting candidates for physiological studies and utilizable as microbial cell factories. To investigate the physiological characteristics of an anaerobic microbial population, yield, productivity, specific growth rate, biomass production, substrate uptake, and product formation are regarded as essential variables. The determination of those variables in distinct cultivation systems may be achieved by using different techniques for sampling, measuring of growth, substrate uptake, and product formation kinetics. In this review, a comprehensive overview of methods is presented, and the applicability is discussed in the frame of anaerobic microbiology and biotechnology.
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Affiliation(s)
- Lisa-Maria Mauerhofer
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria
| | - Patricia Pappenreiter
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | - Christian Paulik
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | | | | | - Simon K-M R Rittmann
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria.
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32
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Zhang J, Empl MT, Schneider M, Schröder B, Stadnicka-Michalak J, Breves G, Steinberg P, Sturla SJ. Gut microbial transformation of the dietary mutagen MeIQx may reduce exposure levels without altering intestinal transport. Toxicol In Vitro 2019; 59:238-245. [PMID: 30954653 DOI: 10.1016/j.tiv.2019.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 03/27/2019] [Accepted: 04/03/2019] [Indexed: 12/13/2022]
Abstract
The mutagen and probable human carcinogen 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) is metabolized in the colon to 9-hydroxyl-2,7-dimethyl-7,9,10,11-tetrahydropyrimido[2',1':2,3]imidazo[4,5-f]quinoxaline (MeIQx-M1) by conjugation with microbially generated acrolein. However, whether this microbiota-controlled process alters systemic exposure and hepatotoxicity of MeIQx remains unclear. The physiological relevance of this microbial transformation on the systemic exposure of MeIQx was investigated using an in vitro-in vivo extrapolation approach. To address whether microbial transformation influences intestinal transport of MeIQx, the intestinal uptake of MeIQx and its metabolite MeIQx-M1 was quantified using Ussing chambers mounted with different intestinal segments from male Fischer 344 rats. Up to 0.4% of both MeIQx and MeIQx-M1 were transported from the mucosal side to the serosal side of intestinal tissue within 90 min, suggesting that the intestinal uptake of both compounds is similar. With the uptake rates of both compounds, physiologically based pharmacokinetic (PBPK) modeling of the fate of MeIQx in the human body including microbial transformation of MeIQx was performed. Results indicate for the first time that high levels of microbe-derived acrolein would be required to significantly reduce systemic exposure of MeIQx in humans. Finally, neither MeIQx nor MeIQx-M1 were cytotoxic towards human liver HepaRG cells at dietary or higher concentrations of MeIQx. In summary, these findings suggest that gut microbial transformation of heterocyclic amines has the potential to influence systemic human exposure to some extent, but may require significant gut microbial production of acrolein and that further investigations are needed to understand physiological levels of acrolein and competing biotransformation pathways.
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Affiliation(s)
- Jianbo Zhang
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Michael T Empl
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Mirjam Schneider
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Bernd Schröder
- Department of Physiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Julita Stadnicka-Michalak
- Eawag, Dübendorf, Switzerland; School of Architecture, Civil and Environmental Engineering, EPF Lausanne, Switzerland
| | - Gerhard Breves
- Department of Physiology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Pablo Steinberg
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, Hannover, Germany.
| | - Shana J Sturla
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.
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33
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Gu Y, Zhang X, Deal B, Han L. Biological systems for treatment and valorization of wastewater generated from hydrothermal liquefaction of biomass and systems thinking: A review. BIORESOURCE TECHNOLOGY 2019; 278:329-345. [PMID: 30723025 DOI: 10.1016/j.biortech.2019.01.127] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/24/2019] [Accepted: 01/26/2019] [Indexed: 06/09/2023]
Abstract
Hydrothermal liquefaction (HTL) is one of the most promising platforms to valorize diverse biomass. Yet, a large amount of wastewater is produced containing a large amount of recalcitrant substances. Valorization of the refractory wastewater by biological systems to recapture organic matter and nutrients is not only clearly beneficial for the environment but also good for energy recovery. To this end, this study reviews the valorization of HTL wastewater via biological systems from many points of view, starting with the brief characterization of wastewater derived from HTL of diverse biomass. The fundamentals, pros and cons, and the most recent outcomes of numerous biological systems are comprehensively demonstrated with emphasis on their combinations. We then use a systems-thinking concept to shed light on a procedural model exhibiting a new perspective to consolidate the utilization of these systems. Finally, this review elucidates the future perspectives of HTL wastewater valorization.
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Affiliation(s)
- Yexuan Gu
- Department of Landscape Architecture, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Xuesong Zhang
- Illinois Sustainable Technology Center, University of Illinois at Urbana-Champaign, 1 Hazelwood Drive, Champaign, IL 61820, USA; Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
| | - Brian Deal
- Department of Landscape Architecture, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Lujia Han
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China
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34
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Beer F, Urbat F, Franz CMAP, Huch M, Kulling SE, Bunzel M, Bunzel D. The Human Fecal Microbiota Metabolizes Foodborne Heterocyclic Aromatic Amines by Reuterin Conjugation and Further Transformations. Mol Nutr Food Res 2019; 63:e1801177. [PMID: 30815965 DOI: 10.1002/mnfr.201801177] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/01/2019] [Indexed: 01/16/2023]
Abstract
SCOPE Heterocyclic aromatic amines (HAAs) are process-induced food contaminants with high mutagenic and/or carcinogenic potential. Although the human gut microbiota is known to affect the metabolism of dietary constituents, its impact on HAA metabolism and toxicity has been little studied. Here, the glycerol-dependent metabolism of seven foodborne HAAs (AαC, Trp-P-1, harman, norharman, PhIP, MeIQx, and MeIQ) by the human fecal microbiota is investigated. METHODS AND RESULTS As analyzed by HPLC-DAD/FLD, the extent of conversion is strongly dependent on glycerol supplementation and HAA structure. AαC (60-100%) and the 2-aminoimidazoazarenes (up to 58%) are especially prone to microbial conversion. Based on high-resolution MS and/or NMR spectroscopy data, 70 fecal metabolites are identified in total, mainly formed by chemical reactions with one or two molecules of microbially derived reuterin. Moreover, it has been demonstrated that the human fecal microbiota can further transform reuterin adducts by reduction and/or hydroxylation reactions. Upon isolation, some reuterin-induced HAA metabolites appear to be partially unstable, complicating structural identification. CONCLUSION The formation of microbial metabolites needs to be incorporated into risk assessment considerations for HAAs in human health. In this study, several HAA metabolites, mainly reuterin-dependent, are identified in vitro, providing the basis for future human studies investigating microbial HAA metabolism.
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Affiliation(s)
- Falco Beer
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
| | - Felix Urbat
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT), Adenauerring 20a, 76131, Karlsruhe, Germany
| | - Charles M A P Franz
- Department of Microbiology and Biotechnology, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Hermann-Weigmann-Straße 1, 24103, Kiel, Germany
| | - Melanie Huch
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
| | - Mirko Bunzel
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT), Adenauerring 20a, 76131, Karlsruhe, Germany
| | - Diana Bunzel
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany
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35
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Turesky RJ. Mechanistic Evidence for Red Meat and Processed Meat Intake and Cancer Risk: A Follow-up on the International Agency for Research on Cancer Evaluation of 2015. Chimia (Aarau) 2018; 72:718-724. [PMID: 30376922 PMCID: PMC6294997 DOI: 10.2533/chimia.2018.718] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The Working Group of the International Agency for Research on Cancer classified the consumption of processed meat as carcinogenic to humans (Group 1), and classified red meat as probably carcinogenic to humans (Group 2A); consumption of both meat types is associated with an increased risk of colorectal cancer. These classifications are based on a compilation of epidemiology data and mechanistic evidence from animal and human studies. The curing of meats with nitrite can produce carcinogenic N-nitroso compounds (NOCs), and the smoking of meat produces polycyclic aromatic hydrocarbons (PAHs). The high-temperature cooking of meat also produces carcinogenic heterocyclic aromatic amines (HAAs). The ingestion of heme from meat can catalyze the formation of NOCs and lipid peroxidation products (LPOs) in the digestive tract. Many of these chemicals form DNA adducts, some of which can induce mutations and initiate carcinogenesis. Another recent hypothesis is that N-glycolylneuraminic acid, a non-human sialic acid sugar present in red meat, becomes incorporated in the cell membrane, triggering the immune response with associated inflammation and reactive oxygen species, which can contribute to DNA damage, tumor promotion, and cancer. The mechanisms by which these chemicals in meat induce DNA damage, and the impact of dietary and host factors that influence the biological potency of these chemicals are highlighted in this updated report.
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Affiliation(s)
- Robert J Turesky
- Masonic Cancer Center Department of Medicinal Chemistry College of Pharmacy, University of Minnestoa 2231 6th St SE, Minneapolis, MN, USA;,
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36
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Hiippala K, Jouhten H, Ronkainen A, Hartikainen A, Kainulainen V, Jalanka J, Satokari R. The Potential of Gut Commensals in Reinforcing Intestinal Barrier Function and Alleviating Inflammation. Nutrients 2018; 10:nu10080988. [PMID: 30060606 PMCID: PMC6116138 DOI: 10.3390/nu10080988] [Citation(s) in RCA: 354] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 02/06/2023] Open
Abstract
The intestinal microbiota, composed of pro- and anti-inflammatory microbes, has an essential role in maintaining gut homeostasis and functionality. An overly hygienic lifestyle, consumption of processed and fiber-poor foods, or antibiotics are major factors modulating the microbiota and possibly leading to longstanding dysbiosis. Dysbiotic microbiota is characterized to have altered composition, reduced diversity and stability, as well as increased levels of lipopolysaccharide-containing, proinflammatory bacteria. Specific commensal species as novel probiotics, so-called next-generation probiotics, could restore the intestinal health by means of attenuating inflammation and strengthening the epithelial barrier. In this review we summarize the latest findings considering the beneficial effects of the promising commensals across all major intestinal phyla. These include the already well-known bifidobacteria, which use extracellular structures or secreted substances to promote intestinal health. Faecalibacterium prausnitzii, Roseburia intestinalis, and Eubacterium hallii metabolize dietary fibers as major short-chain fatty acid producers providing energy sources for enterocytes and achieving anti-inflammatory effects in the gut. Akkermansia muciniphila exerts beneficial action in metabolic diseases and fortifies the barrier function. The health-promoting effects of Bacteroides species are relatively recently discovered with the findings of excreted immunomodulatory molecules. These promising, unconventional probiotics could be a part of biotherapeutic strategies in the future.
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Affiliation(s)
- Kaisa Hiippala
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Hanne Jouhten
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Aki Ronkainen
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Anna Hartikainen
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Veera Kainulainen
- Pharmacology, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Jonna Jalanka
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Reetta Satokari
- Immunobiology Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
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37
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Defois C, Ratel J, Garrait G, Denis S, Le Goff O, Talvas J, Mosoni P, Engel E, Peyret P. Food Chemicals Disrupt Human Gut Microbiota Activity And Impact Intestinal Homeostasis As Revealed By In Vitro Systems. Sci Rep 2018; 8:11006. [PMID: 30030472 PMCID: PMC6054606 DOI: 10.1038/s41598-018-29376-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 07/04/2018] [Indexed: 12/22/2022] Open
Abstract
Growing evidence indicates that the human gut microbiota interacts with xenobiotics, including persistent organic pollutants and foodborne chemicals. The toxicological relevance of the gut microbiota-pollutant interplay is of great concern since chemicals may disrupt gut microbiota functions, with a potential impairment of host homeostasis. Herein we report within batch fermentation systems the impact of food contaminants (polycyclic aromatic hydrocarbons, polychlorobiphenyls, brominated flame retardants, dioxins, pesticides and heterocyclic amines) on the human gut microbiota by metatranscriptome and volatolome i.e. “volatile organic compounds” analyses. Inflammatory host cell response caused by microbial metabolites following the pollutants-gut microbiota interaction, was evaluated on intestinal epithelial TC7 cells. Changes in the volatolome pattern analyzed via solid-phase microextraction coupled to gas chromatography-mass spectrometry mainly resulted in an imbalance in sulfur, phenolic and ester compounds. An increase in microbial gene expression related to lipid metabolism processes as well as the plasma membrane, periplasmic space, protein kinase activity and receptor activity was observed following dioxin, brominated flame retardant and heterocyclic amine exposure. Conversely, all food contaminants tested induced a decreased in microbial transcript levels related to ribosome, translation and nucleic acid binding. Finally, we demonstrated that gut microbiota metabolites resulting from pollutant disturbances may promote the establishment of a pro-inflammatory state in the gut, as stated with the release of cytokine IL-8 by intestinal epithelial cells.
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38
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Si B, Li J, Zhu Z, Shen M, Lu J, Duan N, Zhang Y, Liao Q, Huang Y, Liu Z. Inhibitors degradation and microbial response during continuous anaerobic conversion of hydrothermal liquefaction wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:1124-1132. [PMID: 29554734 DOI: 10.1016/j.scitotenv.2018.02.310] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/26/2018] [Accepted: 02/26/2018] [Indexed: 06/08/2023]
Abstract
One critical challenge of hydrothermal liquefaction (HTL) is its complex aqueous product, which has a high concentration of organic pollutants (up to 100gCOD/L) and diverse fermentation inhibitors, such as furfural, phenolics and N-heterocyclic compounds. Here we report continuous anaerobic digestion of HTL wastewater via an up-flow anaerobic sludge bed reactor (UASB) and packed bed reactor (PBR). Specifically, we investigated the transformation of fermentation inhibitors and microbial response. GC-MS identified the complete degradation of furfural and 5-hydroxymethylfurfural (5-HMF), and partial degradation (54.0-74.6%) of organic nitrogen and phenolic compounds, including 3-hydroxypyridine, phenol and 4-ethyl-phenol. Illumina MiSeq sequencing revealed that the bacteria families related to detoxification increased in response to the HTL aqueous phase. In addition, the increase of acetate-oxidizing bacteria in UASB and acetogens in PBR showed a strengthened acetogenesis. As for the archaeal communities, an increase in hydrogenotrophic methanogens was observed. Based on GC-MS/HPLC and microbial analysis, we speculate that dominant fermentation inhibitors were transformed into intermediates (Acetyl-CoA and acetate), further contributing to biomethane formation.
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Affiliation(s)
- Buchun Si
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Jiaming Li
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Zhangbing Zhu
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana 61801, United States
| | - Mengmeng Shen
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Jianwen Lu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Na Duan
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
| | - Yuanhui Zhang
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana 61801, United States
| | - Qiang Liao
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing 400044, China
| | - Yun Huang
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing 400044, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
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39
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Zhang J, Empl MT, Schwab C, Fekry MI, Engels C, Schneider M, Lacroix C, Steinberg P, Sturla SJ. Gut Microbial Transformation of the Dietary Imidazoquinoxaline Mutagen MelQx Reduces Its Cytotoxic and Mutagenic Potency. Toxicol Sci 2018; 159:266-276. [PMID: 28666384 PMCID: PMC5837702 DOI: 10.1093/toxsci/kfx132] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The diverse community of microbes present in the human gut has emerged as an important
factor for cancer risk, potentially by altering exposure to chemical carcinogens. In the
present study, human gut bacteria were tested for their capacity to transform the
carcinogenic heterocyclic amine
2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MelQx).
Eubacterium hallii, Lactobacillus reuteri, and Lactobacillus
rossiae were able to convert MelQx to a new microbial metabolite characterized
on the basis of high-resolution mass spectrometry and NMR as
9-hydroxyl-2,7-dimethyl-7,9,10,11-tetrahydropyrimido[2′,1′:2,3]imidazo[4,5-f]quinoxaline
(MelQx-M1), resulting from conjugation with activated glycerol. Acrolein derived from the
decomposition of 3-hydroxypropionaldehyde, which is the product of bacterial glycerol/diol
dehydratase activity, was identified as the active compound responsible for the formation
of MelQx-M1. A complex human gut microbial community obtained from
invitro continuous intestinal fermentation was found to also transform
MelQx to MelQx-M1. MelQx-M1 had slightly reduced cytotoxic potency toward human colon
epithelial cells invitro, and diminished mutagenic potential toward
bacteria after metabolic activation. As bacterially derived acrolein also transformed 2
other HCAs, namely 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine and
2-amino-3-methylimidazo[4,5-f]quinoline, these results generalize the
capacity of gut microbiota to detoxify HCAs in the gut, potentially modulating cancer
risk.
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Affiliation(s)
- Jianbo Zhang
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zürich, Switzerland
| | - Michael T Empl
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, 30173 Hannover, Germany
| | - Clarissa Schwab
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zürich, Switzerland
| | - Mostafa I Fekry
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zürich, Switzerland.,Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Christina Engels
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zürich, Switzerland
| | - Mirjam Schneider
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zürich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zürich, Switzerland
| | - Pablo Steinberg
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, 30173 Hannover, Germany
| | - Shana J Sturla
- Department of Health Sciences and Technology, ETH Zurich, 8092 Zürich, Switzerland
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40
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Shah MS, DeSantis TZ, Weinmaier T, McMurdie PJ, Cope JL, Altrichter A, Yamal JM, Hollister EB. Leveraging sequence-based faecal microbial community survey data to identify a composite biomarker for colorectal cancer. Gut 2018; 67:882-891. [PMID: 28341746 DOI: 10.1136/gutjnl-2016-313189] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Colorectal cancer (CRC) is the second leading cause of cancer-associated mortality in the USA. The faecal microbiome may provide non-invasive biomarkers of CRC and indicate transition in the adenoma-carcinoma sequence. Re-analysing raw sequence and metadata from several studies uniformly, we sought to identify a composite and generalisable microbial marker for CRC. DESIGN Raw 16S rRNA gene sequence data sets from nine studies were processed with two pipelines, (1) QIIME closed reference (QIIME-CR) or (2) a strain-specific method herein termed SS-UP (Strain Select, UPARSE bioinformatics pipeline). A total of 509 samples (79 colorectal adenoma, 195 CRC and 235 controls) were analysed. Differential abundance, meta-analysis random effects regression and machine learning analyses were carried out to determine the consistency and diagnostic capabilities of potential microbial biomarkers. RESULTS Definitive taxa, including Parvimonas micra ATCC 33270, Streptococcus anginosus and yet-to-be-cultured members of Proteobacteria, were frequently and significantly increased in stools from patients with CRC compared with controls across studies and had high discriminatory capacity in diagnostic classification. Microbiome-based CRC versus control classification produced an area under receiver operator characteristic (AUROC) curve of 76.6% in QIIME-CR and 80.3% in SS-UP. Combining clinical and microbiome markers gave a diagnostic AUROC of 83.3% for QIIME-CR and 91.3% for SS-UP. CONCLUSIONS Despite technological differences across studies and methods, key microbial markers emerged as important in classifying CRC cases and such could be used in a universal diagnostic for the disease. The choice of bioinformatics pipeline influenced accuracy of classification. Strain-resolved microbial markers might prove crucial in providing a microbial diagnostic for CRC.
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Affiliation(s)
- Manasi S Shah
- Department of Epidemiology, University of Texas School of Public Health, Houston, Texas, USA.,Bioinformatics, Second Genome Inc, South San Francisco, California, USA.,Department of Pathology, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, USA.,Department of Pathology and Immunology, Baylor College of Medicine, HoustonTexas, USA
| | - Todd Z DeSantis
- Bioinformatics, Second Genome Inc, South San Francisco, California, USA
| | - Thomas Weinmaier
- Bioinformatics, Second Genome Inc, South San Francisco, California, USA
| | - Paul J McMurdie
- Bioinformatics, Second Genome Inc, South San Francisco, California, USA.,Bioinformatics, Whole Biome Inc, San Francisco, California, USA
| | - Julia L Cope
- Department of Pathology, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, USA.,Department of Pathology and Immunology, Baylor College of Medicine, HoustonTexas, USA.,Diversigen, Inc, Houston, Texas, USA
| | - Adam Altrichter
- Bioinformatics, Second Genome Inc, South San Francisco, California, USA
| | - Jose-Miguel Yamal
- Department of Epidemiology, University of Texas School of Public Health, Houston, Texas, USA
| | - Emily B Hollister
- Department of Pathology, Texas Children's Microbiome Center, Texas Children's Hospital, Houston, Texas, USA.,Department of Pathology and Immunology, Baylor College of Medicine, HoustonTexas, USA
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41
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Abstract
Acrolein is a highly reactive electrophile causing toxic effects, such as DNA and protein adduction, oxidative stress, endoplasmic reticulum stress, immune dysfunction, and membrane damage. This Opinion/Hypothesis provides an overview of endogenous and exogenous acrolein sources, acrolein’s mode of action, and its metabolic fate. Recent reports underpin the finding that gut microbial glycerol metabolism leading to the formation of reuterin is an additional source of endogenous acrolein. Reuterin is an antimicrobial multicomponent system consisting of 3-hydroxypropionaldehyde, its dimer and hydrate, and also acrolein. The major conclusion is that gut microbes can metabolize glycerol to reuterin and that this transformation occurs in vivo. Given the known toxicity of acrolein, the observation that acrolein is formed in the gut necessitates further investigations on functional relevance for gut microbiota and the host.
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42
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Bircher L, Schwab C, Geirnaert A, Lacroix C. Cryopreservation of artificial gut microbiota produced with in vitro fermentation technology. Microb Biotechnol 2018; 11:163-175. [PMID: 28980453 PMCID: PMC5743790 DOI: 10.1111/1751-7915.12844] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/29/2017] [Accepted: 07/28/2017] [Indexed: 12/13/2022] Open
Abstract
Interest in faecal microbiota transplantation (FMT) has increased as therapy for intestinal diseases, but safety issues limit its widespread use. Intestinal fermentation technology (IFT) can produce controlled, diverse and metabolically active 'artificial' colonic microbiota as potential alternative to common FMT. However, suitable processing technology to store this artificial microbiota is lacking. In this study, we evaluated the impact of the two cryoprotectives, glycerol (15% v/v) and inulin (5% w/v) alone and in combination, in preserving short-chain fatty acid formation and recovery of major butyrate-producing bacteria in three artificial microbiota during cryopreservation for 3 months at -80°C. After 24 h anaerobic fermentation of the preserved microbiota, butyrate and propionate production were maintained when glycerol was used as cryoprotectant, while acetate and butyrate were formed more rapidly with glycerol in combination with inulin. Glycerol supported cryopreservation of the Roseburia spp./Eubacterium rectale group, while inulin improved the recovery of Faecalibacterium prausnitzii. Eubacterium hallii growth was affected minimally by cryopreservation. Our data indicate that butyrate producers, which are key organisms for gut health, can be well preserved with glycerol and inulin during frozen storage. This is of high importance if artificially produced colonic microbiota is considered for therapeutic purposes.
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Affiliation(s)
- Lea Bircher
- Laboratory of Food BiotechnologyInstitute of Food, Nutrition and HealthETH ZürichSchmelzbergstrasse 78092ZürichSwitzerland
| | - Clarissa Schwab
- Laboratory of Food BiotechnologyInstitute of Food, Nutrition and HealthETH ZürichSchmelzbergstrasse 78092ZürichSwitzerland
| | - Annelies Geirnaert
- Laboratory of Food BiotechnologyInstitute of Food, Nutrition and HealthETH ZürichSchmelzbergstrasse 78092ZürichSwitzerland
| | - Christophe Lacroix
- Laboratory of Food BiotechnologyInstitute of Food, Nutrition and HealthETH ZürichSchmelzbergstrasse 78092ZürichSwitzerland
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Beer F, Urbat F, Steck J, Huch M, Bunzel D, Bunzel M, Kulling SE. Metabolism of Foodborne Heterocyclic Aromatic Amines by Lactobacillus reuteri DSM 20016. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6797-6811. [PMID: 28679205 DOI: 10.1021/acs.jafc.7b01663] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The heterocyclic aromatic amine (HAA) 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is converted into 7-hydroxy-5-methyl-3-phenyl-6,7,8,9-tetrahydropyrido[3',2':4,5]imidazo[1,2-a]pyrimidin-5-ium chloride (PhIP-M1) via a chemical reaction with 3-hydroxypropionaldehyde or acrolein derived from glycerol by reuterin producing gut bacteria. Because it is unknown whether this reaction also applies to other HAAs, seven foodborne HAAs (2-amino-9H-pyrido[2,3-b]indole (AαC), 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole (Trp-P-1), 2-amino-3-methyl-3H-imidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethyl-3H-imidazo[4,5-f]quinoline (MeIQ), 2-amino-3,8-dimethyl-3H-imidazo[4,5-f]quinoxaline (MeIQx), 9H-pyrido[3,4-b]indole (norharman), and 1-methyl-9H-pyrido[3,4-b]indole (harman)) were anaerobically incubated with Lactobacillus reuteri DSM 20016 in the presence of glycerol. The extent of conversion, as analyzed by HPLC-DAD/FLD, was dependent on both the studied HAAs and the glucose/glycerol ratio, indicating reuterin to be involved in HAA metabolism. Based on HRMS analyses, PhIP-M1-type metabolites were detected for AαC, Trp-P-1, IQ, MeIQ, MeIQx, harman, and norharman. In the case of AαC, this was confirmed by metabolite isolation (AαC-M8, 2,3,4,10-tetrahydro-1H-indolo[2,3-b][1,8]naphthyridin-2-ol) and one- (1H) and two-dimensional (HSQC, HMBC, COSY, DOSY) NMR spectroscopy. In addition, based on HRMS and/or NMR spectroscopy, a new type of HAA metabolite, resulting from the reaction with two molecules of 3-hydroxypropionaldehyde or acrolein, is hypothesized for AαC, Trp-P-1, IQ, MeIQ, and MeIQx.
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Affiliation(s)
- Falco Beer
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food , Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany
| | - Felix Urbat
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT) , Adenauerring 20a, 76131 Karlsruhe, Germany
| | - Jan Steck
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food , Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT) , Adenauerring 20a, 76131 Karlsruhe, Germany
| | - Melanie Huch
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food , Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany
| | - Diana Bunzel
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food , Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany
| | - Mirko Bunzel
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT) , Adenauerring 20a, 76131 Karlsruhe, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut (MRI), Federal Research Institute of Nutrition and Food , Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany
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Engels C, Schwab C, Zhang J, Stevens MJA, Bieri C, Ebert MO, McNeill K, Sturla SJ, Lacroix C. Acrolein contributes strongly to antimicrobial and heterocyclic amine transformation activities of reuterin. Sci Rep 2016; 6:36246. [PMID: 27819285 PMCID: PMC5098142 DOI: 10.1038/srep36246] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/21/2016] [Indexed: 02/08/2023] Open
Abstract
Glycerol/diol dehydratases catalyze the conversion of glycerol to 3-hydroxypropionaldehyde (3-HPA), the basis of a multi-component system called reuterin. Reuterin has antimicrobial properties and undergoes chemical conjugation with dietary heterocyclic amines (HCAs). In aqueous solution reuterin is in dynamic equilibrium with the toxicant acrolein. It was the aim of this study to investigate the extent of acrolein formation at various physiological conditions and to determine its role in biological and chemical activities. The application of a combined novel analytical approach including IC-PAD, LC-MS and NMR together with specific acrolein scavengers suggested for the first time that acrolein, and not 3-HPA, is the active compound responsible for HCA conjugation and antimicrobial activity attributed to reuterin. As formation of the HCA conjugate was observed in vivo, our results imply that acrolein is formed in the human gut with implications on detoxification of HCAs. We propose to re-define the term reuterin to include acrolein.
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Affiliation(s)
- Christina Engels
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Clarissa Schwab
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Jianbo Zhang
- Laboratory of Food Nutrition and Toxicology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Marc J. A. Stevens
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Corinne Bieri
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Marc-Olivier Ebert
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Sciences, ETH Zurich, Zurich, Switzerland
| | - Kristopher McNeill
- Laboratory of Environmental Chemistry, Institute of Biogeochemistry and Pollutant Dynamics, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Shana J. Sturla
- Laboratory of Food Nutrition and Toxicology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
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Engels C, Ruscheweyh HJ, Beerenwinkel N, Lacroix C, Schwab C. The Common Gut Microbe Eubacterium hallii also Contributes to Intestinal Propionate Formation. Front Microbiol 2016; 7:713. [PMID: 27242734 PMCID: PMC4871866 DOI: 10.3389/fmicb.2016.00713] [Citation(s) in RCA: 183] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/29/2016] [Indexed: 01/09/2023] Open
Abstract
Eubacterium hallii is considered an important microbe in regard to intestinal metabolic balance due to its ability to utilize glucose and the fermentation intermediates acetate and lactate, to form butyrate and hydrogen. Recently, we observed that E. hallii is capable of metabolizing glycerol to 3-hydroxypropionaldehyde (3-HPA, reuterin) with reported antimicrobial properties. The key enzyme for glycerol to 3-HPA conversion is the cobalamin-dependent glycerol/diol dehydratase PduCDE which also utilizes 1,2-propanediol (1,2-PD) to form propionate. Therefore our primary goal was to investigate glycerol to 3-HPA metabolism and 1,2-PD utilization by E. hallii along with its ability to produce cobalamin. We also investigated the relative abundance of E. hallii in stool of adults using 16S rRNA and pduCDE based gene screening to determine the contribution of E. hallii to intestinal propionate formation. We found that E. hallii utilizes glycerol to produce up to 9 mM 3-HPA but did not further metabolize 3-HPA to 1,3-propanediol. Utilization of 1,2-PD in the presence and absence of glucose led to the formation of propanal, propanol and propionate. E. hallii formed cobalamin and was detected in stool of 74% of adults using 16S rRNA gene as marker gene (n = 325). Relative abundance of the E. hallii 16S rRNA gene ranged from 0 to 0.59% with a mean relative abundance of 0.044%. E. hallii PduCDE was detected in 63 to 81% of the metagenomes depending on which subunit was investigated beside other taxons such as Ruminococcus obeum, R. gnavus, Flavonifractor plautii, Intestinimonas butyriciproducens, and Veillonella spp. In conclusion, we identified E. hallii as a common gut microbe with the ability to convert glycerol to 3-HPA, a step that requires the production of cobalamin, and to utilize 1,2-PD to form propionate. Our results along with its ability to use a broad range of substrates point at E. hallii as a key species within the intestinal trophic chain with the potential to highly impact the metabolic balance as well as the gut microbiota/host homeostasis by the formation of different short chain fatty acids.
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Affiliation(s)
- Christina Engels
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich Zurich, Switzerland
| | - Hans-Joachim Ruscheweyh
- Department of Biosystems Science and Engineering, ETH ZurichBasel, Switzerland; Research Informatics, Scientific IT Services, ETH ZurichBasel, Switzerland; SIB Swiss Institute of BioinformaticsBasel, Switzerland
| | - Niko Beerenwinkel
- Department of Biosystems Science and Engineering, ETH ZurichBasel, Switzerland; SIB Swiss Institute of BioinformaticsBasel, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich Zurich, Switzerland
| | - Clarissa Schwab
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich Zurich, Switzerland
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