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Xi D, Hofmann L, Alter T, Einspanier R, Bereswill S, Heimesaat MM, Gölz G, Sharbati S. The glycosyltransferase ST3GAL2 is regulated by miR-615-3p in the intestinal tract of Campylobacter jejuni infected mice. Gut Pathog 2021; 13:42. [PMID: 34183045 PMCID: PMC8240225 DOI: 10.1186/s13099-021-00437-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/10/2021] [Indexed: 11/30/2022] Open
Abstract
Background Campylobacter jejuni (C. jejuni) infections are of increasing importance worldwide. As a typical mucosal pathogen, the interaction of C. jejuni with mucins is a prominent step in the colonisation of mucosal surfaces. Despite recent advances in understanding the interaction between bacterial pathogens and host mucins, the mechanisms of mucin glycosylation during intestinal C. jejuni infection remain largely unclear. This prompted us to identify relevant regulatory networks that are concerted by miRNAs and could play a role in the mucin modification and interaction. Results We firstly used a human intestinal in vitro model, in which we observed altered transcription of MUC2 and TFF3 upon C. jejuni NCTC 11168 infection. Using a combined approach consisting of in silico analysis together with in vitro expression analysis, we identified the conserved miRNAs miR-125a-5p and miR-615-3p associated with MUC2 and TFF3. Further pathway analyses showed that both miRNAs appear to regulate glycosyltransferases, which are related to the KEGG pathway ‘Mucin type O-glycan biosynthesis’. To validate the proposed interactions, we applied an in vivo approach utilising a well-established secondary abiotic IL-10−/− mouse model for infection with C. jejuni 81-176. In colonic tissue samples, we confirmed infection-dependent aberrant transcription of MUC2 and TFF3. Moreover, two predicted glycosyltransferases, the sialyltransferases ST3GAL1 and ST3GAL2, exhibited inversely correlated transcriptional levels compared to the expression of the identified miRNAs miR-125a-5p and miR-615-3p, respectively. In this study, we mainly focused on the interaction between miR-615-3p and ST3GAL2 and were able to demonstrate their molecular interaction using luciferase reporter assays and RNAi. Detection of ST3GAL2 in murine colonic tissue by immunofluorescence demonstrated reduced intensity after C. jejuni 81-176 infection and was thus consistent with the observations made above. Conclusions We report here for the first time the regulation of glycosyltransferases by miRNAs during murine infection with C. jejuni 81-176. Our data suggest that mucin type O-glycan biosynthesis is concerted by the interplay of miRNAs and glycosyltransferases, which could determine the shape of intestinal glycosylated proteins during infection. Supplementary Information The online version contains supplementary material available at 10.1186/s13099-021-00437-1.
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Affiliation(s)
- De Xi
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Lukas Hofmann
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Thomas Alter
- Institute of Food Safety and Food Hygiene, Freie Universität Berlin, Berlin, Germany
| | - Ralf Einspanier
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Stefan Bereswill
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Microbiology, Infectious Diseases and Immunology, Berlin, Germany
| | - Markus M Heimesaat
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Microbiology, Infectious Diseases and Immunology, Berlin, Germany
| | - Greta Gölz
- Institute of Food Safety and Food Hygiene, Freie Universität Berlin, Berlin, Germany
| | - Soroush Sharbati
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Berlin, Germany.
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Coumoul X, Servien R, Juricek L, Kaddouch-Amar Y, Lippi Y, Berthelot L, Naylies C, Morvan ML, Antignac JP, Desdoits-Lethimonier C, Jegou B, Tremblay-Franco M, Canlet C, Debrauwer L, Le Gall C, Laurent J, Gouraud PA, Cravedi JP, Jeunesse E, Savy N, Dandere-Abdoulkarim K, Arnich N, Fourès F, Cotton J, Broudin S, Corman B, Moing A, Laporte B, Richard-Forget F, Barouki R, Rogowsky P, Salles B. The GMO90+ Project: Absence of Evidence for Biologically Meaningful Effects of Genetically Modified Maize-based Diets on Wistar Rats After 6-Months Feeding Comparative Trial. Toxicol Sci 2020; 168:315-338. [PMID: 30535037 PMCID: PMC6432862 DOI: 10.1093/toxsci/kfy298] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The GMO90+ project was designed to identify biomarkers of exposure or health effects in Wistar Han RCC rats exposed in their diet to 2 genetically modified plants (GMP) and assess additional information with the use of metabolomic and transcriptomic techniques. Rats were fed for 6-months with 8 maize-based diets at 33% that comprised either MON810 (11% and 33%) or NK603 grains (11% and 33% with or without glyphosate treatment) or their corresponding near-isogenic controls. Extensive chemical and targeted analyses undertaken to assess each diet demonstrated that they could be used for the feeding trial. Rats were necropsied after 3 and 6 months. Based on the Organization for Economic Cooperation and Development test guideline 408, the parameters tested showed a limited number of significant differences in pairwise comparisons, very few concerning GMP versus non-GMP. In such cases, no biological relevance could be established owing to the absence of difference in biologically linked variables, dose-response effects, or clinical disorders. No alteration of the reproduction function and kidney physiology was found. Metabolomics analyses on fluids (blood, urine) were performed after 3, 4.5, and 6 months. Transcriptomics analyses on organs (liver, kidney) were performed after 3 and 6 months. Again, among the significant differences in pairwise comparisons, no GMP effect was observed in contrast to that of maize variety and culture site. Indeed, based on transcriptomic and metabolomic data, we could differentiate MON- to NK-based diets. In conclusion, using this experimental design, no biomarkers of adverse health effect could be attributed to the consumption of GMP diets in comparison with the consumption of their near-isogenic non-GMP controls.
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Affiliation(s)
- Xavier Coumoul
- INSERM UMR-S1124, Toxicologie Pharmacologie et Signalisation Cellulaire, Université Paris Descartes, USPC, Paris, France
| | - Rémi Servien
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Ludmila Juricek
- INSERM UMR-S1124, Toxicologie Pharmacologie et Signalisation Cellulaire, Université Paris Descartes, USPC, Paris, France
| | - Yael Kaddouch-Amar
- INSERM UMR-S1124, Toxicologie Pharmacologie et Signalisation Cellulaire, Université Paris Descartes, USPC, Paris, France
| | - Yannick Lippi
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Laureline Berthelot
- Centre de Recherche sur l'Inflammation (CRI), INSERM UMRS 1149, Paris, France
| | - Claire Naylies
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | | | | | | | - Bernard Jegou
- Inserm, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail), Université de Rennes, Rennes, France
| | - Marie Tremblay-Franco
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Cécile Canlet
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Laurent Debrauwer
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | | | | | | | - Jean-Pierre Cravedi
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Elisabeth Jeunesse
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Nicolas Savy
- Institut de Mathématiques de Toulouse, UMR5219-Université de Toulouse, CNRS-UPS IMT, Toulouse, France
| | | | | | | | | | | | | | - Annick Moing
- UMR1332 Biologie du Fruit et Pathologie, INRA, Université de Bordeaux, Villenave d'Ornon, France
| | - Bérengère Laporte
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | | | - Robert Barouki
- INSERM UMR-S1124, Toxicologie Pharmacologie et Signalisation Cellulaire, Université Paris Descartes, USPC, Paris, France
| | - Peter Rogowsky
- Laboratoire Reproduction et Développement des Plantes, CNRS, INRA, University Lyon, Lyon, France
| | - Bernard Salles
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
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Stein T, Ran G, Bohmer M, Sharbati S, Einspanier R. Expression profiling of key pathways in rat liver after a one-year feeding trial with transgenic maize MON810. Sci Rep 2019; 9:18915. [PMID: 31831783 PMCID: PMC6908735 DOI: 10.1038/s41598-019-55375-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 11/22/2019] [Indexed: 12/13/2022] Open
Abstract
In a recent one-year feeding study, we observed no adverse effects on tissue level in organs of rats fed with the genetically-modified maize MON810. Here, we assessed RNA expression levels of 86 key genes of the apoptosis-, NF-кB-, DNA-damage response (DDR)-, and unfolded-protein response (UPR) pathways by RT-qPCR in the rat liver. Male and female rats were fed either with 33% MON810 (GMO), isogenic- (ISO), or conventional maize (CONV) and RNAs were quantified from eight rats from each of the six feeding groups. Only Birc2 transcript showed a significant (p ≤ 0.05) consistent difference of ≥1.5-fold between the GMO and ISO groups in both sexes. Unsupervised cluster analysis showed a strong separation of male and female rats, but no clustering of the feeding groups. Individual analysis of the pathways did not show any clustering of the male or female feeding groups either, though transcript levels of UPR pathway-associated genes caused some clustering of the male GMO and CONV feeding group samples. These differences were not seen between the GMO and ISO control or within the female cohort. Our data therefore does not support an adverse effect on rat liver RNA expression through the long-term feeding of MON810 compared to isogenic control maize.
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Affiliation(s)
- Torsten Stein
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Guangyao Ran
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
- Department of Liquor Making Engineering, Moutai Institute, Luban Avenue, 564507, Renhuai, China
| | - Marc Bohmer
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
- SGS Institute Fresenius GmbH, Life Sciences Services, Tegeler Weg 33, 10589, Berlin, Germany
| | - Soroush Sharbati
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - Ralf Einspanier
- Institute of Veterinary Biochemistry, Freie Universität Berlin, Oertzenweg 19b, 14163, Berlin, Germany.
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Lanzoni A, Castoldi AF, Kass GE, Terron A, De Seze G, Bal-Price A, Bois FY, Delclos KB, Doerge DR, Fritsche E, Halldorsson T, Kolossa-Gehring M, Hougaard Bennekou S, Koning F, Lampen A, Leist M, Mantus E, Rousselle C, Siegrist M, Steinberg P, Tritscher A, Van de Water B, Vineis P, Walker N, Wallace H, Whelan M, Younes M. Advancing human health risk assessment. EFSA J 2019; 17:e170712. [PMID: 32626449 PMCID: PMC7015480 DOI: 10.2903/j.efsa.2019.e170712] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The current/traditional human health risk assessment paradigm is challenged by recent scientific and technical advances, and ethical demands. The current approach is considered too resource intensive, is not always reliable, can raise issues of reproducibility, is mostly animal based and does not necessarily provide an understanding of the underlying mechanisms of toxicity. From an ethical and scientific viewpoint, a paradigm shift is required to deliver testing strategies that enable reliable, animal-free hazard and risk assessments, which are based on a mechanistic understanding of chemical toxicity and make use of exposure science and epidemiological data. This shift will require a new philosophy, new data, multidisciplinary expertise and more flexible regulations. Re-engineering of available data is also deemed necessary as data should be accessible, readable, interpretable and usable. Dedicated training to build the capacity in terms of expertise is necessary, together with practical resources allocated to education. The dialogue between risk assessors, risk managers, academia and stakeholders should be promoted further to understand scientific and societal needs. Genuine interest in taking risk assessment forward should drive the change and should be supported by flexible funding. This publication builds upon presentations made and discussions held during the break-out session 'Advancing risk assessment science - Human health' at EFSA's third Scientific Conference 'Science, Food and Society' (Parma, Italy, 18-21 September 2018).
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Affiliation(s)
| | | | | | | | | | | | - Frédéric Y Bois
- French National Institute for Industrial Environment and Risks FR
| | - K Barry Delclos
- National Center for Toxicological Research US Food and Drug Administration USA
| | - Daniel R Doerge
- National Center for Toxicological Research US Food and Drug Administration USA
| | - Ellen Fritsche
- Leibniz Research Institute for Environmental Medicine DE
| | | | | | | | | | | | | | - Ellen Mantus
- The National Academies of Sciences, Engineering, and Medicine USA
| | | | | | | | | | - Bob Van de Water
- Drug Discovery and Safety Leiden Academic Centre for Drug Research Leiden University NL
| | | | - Nigel Walker
- National Toxicology Program/National Institute of Environmental Health Sciences USA
| | - Heather Wallace
- Institute of Medical Sciences University of Aberdeen Scotland UK
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