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Zhang L, Agrawal M, Ng SC, Jess T. Early-life exposures and the microbiome: implications for IBD prevention. Gut 2024; 73:541-549. [PMID: 38123972 PMCID: PMC11150004 DOI: 10.1136/gutjnl-2023-330002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023]
Abstract
The early-life period is one of microbiome establishment and immune maturation. Early-life exposures are increasingly being recognised to play an important role in IBD risk. The composition of functions of the gut microbiome in the prenatal, perinatal, and postnatal period may be crucial towards development of health or disease, including IBD, later in life. We herein present a comprehensive summary of the interplay between early-life factors and microbiome perturbations, and their association with risk of IBD. In addition, we provide an overview of host and external factors in early life that are known to impact gut microbiome maturation and exposures implicated in IBD risk. Considering the emerging concept of IBD prevention, we propose strategies to minimise maternal and offspring exposure to potentially harmful variables and recommend protective measures during pregnancy and the postpartum period. This holistic view of early-life factors and microbiome signatures among mothers and their offspring will help frame our current understanding of their importance towards IBD pathogenesis and frame the roadmap for preventive strategies.
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Affiliation(s)
- Lin Zhang
- Microbiota I-Center (MagIC), Hong Kong SAR, China
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Manasi Agrawal
- Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York NY, New York, USA
| | - Siew C Ng
- Microbiota I-Center (MagIC), Hong Kong SAR, China
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Tine Jess
- Center for Molecular Prediction of Inflammatory Bowel Disease (PREDICT), Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
- Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
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2
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González-García BP, Marí S, Cilleros-Portet A, Hernangomez-Laderas A, Fernandez-Jimenez N, García-Santisteban I, Bilbao JR. Two-Sample Mendelian Randomization detects bidirectional causality between gut microbiota and celiac disease in individuals with high genetic risk. Front Immunol 2023; 14:1082862. [PMID: 37457693 PMCID: PMC10347381 DOI: 10.3389/fimmu.2023.1082862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 06/07/2023] [Indexed: 07/18/2023] Open
Abstract
Background Celiac Disease (CeD) is an autoimmune disorder triggered by gluten intake in genetically susceptible individuals. Highest risk individuals are homozygous for the Human Leucocyte Antigen (HLA) DQ2.5 haplotype or DQ2.5/DQ2.2 heterozygous. Both the HLA-DQ2-positive high genetic risk individuals and those that have developed the disease have altered intestinal microbiota, but it remains unclear whether these alterations are a cause or a consequence of CeD. Objective To investigate a potential bidirectional causality between gut microbiota (GM) and CeD in HLA-DQ2 high genetic risk individuals. Materials and Methods We performed a bidirectional Two-Sample Mendelian Randomization (2SMR) test using summary statistics from the largest publicly available Genome-Wide Association Study (GWAS) of GM and the summary statistics of the Immunochip CeD study of those individuals with the HLA-DQ2 high-risk haplotype. To test whether changes in GM composition were causally linked to CeD, GM data were used as exposure and CeD data as outcome; to test for reverse causation, the exposure and outcome datasets were inverted. Results We identified several bacteria from Ruminococcaceae and Lachnospiraceae families of the Firmicutes phylum as potentially causal in both directions. In addition, our results suggest that changes in the abundance of Veillonellaceae family might be causal in the development of CeD, while alterations in Pasteurellaceae family might be a consequence of the disease itself. Conclusion Our results suggest that the relationship between GM and HLA-DQ2 high risk individuals is highly complex and bidirectional.
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Affiliation(s)
- Bárbara P. González-García
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Sergi Marí
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Ariadna Cilleros-Portet
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Alba Hernangomez-Laderas
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Nora Fernandez-Jimenez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Iraia García-Santisteban
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
| | - Jose Ramon Bilbao
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU) and Biocruces Bizkaia Health Research Institute, Leioa, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
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3
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Melekoglu E, Yılmaz B, Çevik A, Gökyıldız Sürücü Ş, Avcıbay Vurgeç B, Gözüyeşil E, Sharma H, Boyan N, Ozogul F. The Impact of the Human Milk Microbiota in the Prevention of Disease and Infant Health. Breastfeed Med 2023. [PMID: 37140562 DOI: 10.1089/bfm.2022.0292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Background: Human milk is recognized as an ideal food for newborns and infants owing to the presence of various nutritive factors, including healthy bacteria. Aim/Objective: This review aimed to understand the effects of human milk microbiota in both the prevention of disease and the health of infants. Methods: Data were obtained from PubMed, Scopus, Web of Science, clinical trial registries, Dergipark, and Türk Atıf Dizini up to February 2023 without language restrictions. Results: It is considered that the first human milk microbiota ingested by the newborn creates the initial microbiome of the gut system, which in turn influences the development and maturation of immunity. Bacteria present in human milk modulate the anti-inflammatory response by releasing certain cytokines, protecting the newborn against certain infections. Therefore, certain bacterial strains isolated from human milk could serve as potential probiotics for various therapeutic applications. Conclusions: In this review, the origin and significance of human milk bacteria have been highlighted along with certain factors influencing the composition of human milk microbiota. In addition, it also summarizes the health benefits of human milk as a protective agent against certain diseases and ailments.
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Affiliation(s)
- Ebru Melekoglu
- Department of Nutrition and Dietetics, Cukurova University, Adana, Turkey
| | - Birsen Yılmaz
- Department of Nutrition and Dietetics, Cukurova University, Adana, Turkey
| | - Ayseren Çevik
- Department of Midwifery, Cukurova University, Adana, Turkey
| | | | | | - Ebru Gözüyeşil
- Department of Midwifery, Cukurova University, Adana, Turkey
| | - Heena Sharma
- Food Technology Lab, Dairy Technology Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Neslihan Boyan
- Department of Anatomy, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Fatih Ozogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey
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4
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Zoghi S, Abbasi A, Heravi FS, Somi MH, Nikniaz Z, Moaddab SY, Ebrahimzadeh Leylabadlo H. The gut microbiota and celiac disease: Pathophysiology, current perspective and new therapeutic approaches. Crit Rev Food Sci Nutr 2022; 64:2176-2196. [PMID: 36154539 DOI: 10.1080/10408398.2022.2121262] [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: 11/09/2022]
Abstract
Celiac disease (CD) as a chronic gluten-sensitive intestinal condition, mainly affects genetically susceptible hosts. The primary determinants of CD have been identified as environmental and genetic variables. The development of CD is significantly influenced by environmental factors, including the gut microbiome. Therefore, gut microbiome re-programming-based therapies using probiotics, prebiotics, postbiotics, gluten-free diet, and fecal microbiota transplantation have shown promising results in the modification of the gut microbiome. Due to the importance and paucity of information regarding the CD pathophysiology, in this review, we have covered the association between CD development and gut microbiota, the effects of infectious agents, particularly the recent Covid-19 infection in CD patients, and the efficacy of potential therapeutic approaches in the CD have been discussed. Hence, scientific literature indicates that the diverse biological functions of the gut microbiota against immunomodulatory responses have made microbiome-based therapy an alternative therapeutic paradigm to ameliorate the symptoms of CD and quality of life. However, the exact potential of microbiota-based techniques that aims to quantitatively and qualitatively alter the gut microbiota to be used in the treatment and ameliorate the symptoms of CD will be determined with further research in the future.
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Affiliation(s)
- Sevda Zoghi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Abbasi
- Student Research Committee, Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Nikniaz
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Yaghoub Moaddab
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Wessels M, Auricchio R, Dolinsek J, Donat E, Gillett P, Mårild K, Meijer C, Popp A, Mearin ML. Review on pediatric coeliac disease from a clinical perspective. Eur J Pediatr 2022; 181:1785-1795. [PMID: 35034201 DOI: 10.1007/s00431-022-04379-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 12/19/2022]
Abstract
Coeliac disease is an immune-mediated condition characterized by chronic inflammation of the small bowel with villous atrophy driven by gluten ingestion in genetically predisposed individuals. It occurs frequently in both children and adults, affecting 1-4% of the population. The disease is associated with both gastrointestinal and extra-intestinal symptoms related to malabsorption and/or immune activation, and autoantibodies to tissue transglutaminase. Removal of gluten from the diet results in resolution of symptoms and enteropathy in the majority of patients. A good diagnostic work-up is important to avoid unnecessary restrictive diets in children. In this review on pediatric coeliac disease, we address epidemiology including predisposing environmental factors and possible preventive strategies, as well as the clinical presentation, diagnosis and follow-up. What is Known: •Primary prevention of coeliac disease is not possible; however, secondary prevention by targeting high-risk groups is recommended. •The diagnosis is safe without duodenal biopsies if specific conditions are met, also in asymptomatic children. What is New: •HLA-DQ typing is not routinely required for the diagnosis, whereas it can rule out coeliac disease if HLA-DQ2 and HLA-DQ8 are absent. •Follow-up could be improved by a more rational use of (laboratory) tests, increased intention to dietary compliance and quality of life.
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Affiliation(s)
- Margreet Wessels
- Department of Pediatrics, Rijnstate Hospital, Arnhem, the Netherlands.
| | - Renata Auricchio
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Jernej Dolinsek
- Department of Pediatrics, Hepatology and Nutrition Unit and Medical Faculty, Dept. of Pediatrics, University Medical Centre Maribor, GastroenterologyMaribor, Slovenia
| | - Ester Donat
- Pediatric Gastroenterology and Hepatology Unit, Celiac Disease and Digestive Immunopathology Unit, Hospital Universitari I Politècnic La Fe, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Peter Gillett
- Department of Pediatric Gastroenterology, Royal Hospital for Children and Young People, Scotland, Edinburgh, UK
| | - Karl Mårild
- Department of Pediatrics, Institute of Clinical Sciences, Department of Pediatric Gastroenterology, Sahlgrenska Academy, Queen Silvia Children's Hospital, Gothenburg, Sweden
| | - Caroline Meijer
- Department of Pediatrics, Leiden University Medical Center, Leiden, the Netherlands
| | - Alina Popp
- University of Medicine and Pharmacy ''Carol Davila'', National Institute for Mother and Child Health, Bucharest, Romania
| | - M Luisa Mearin
- Department of Pediatrics, Leiden University Medical Center, Leiden, the Netherlands
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6
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Štšepetova J, Simre K, Tagoma A, Uibo O, Peet A, Siljander H, Tillmann V, Knip M, Mändar R, Uibo R. Maternal breast milk microbiota and immune markers in relation to subsequent development of celiac disease in offspring. Sci Rep 2022; 12:6607. [PMID: 35459889 PMCID: PMC9033794 DOI: 10.1038/s41598-022-10679-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 04/11/2022] [Indexed: 12/15/2022] Open
Abstract
The potential impact of the composition of maternal breast milk is poorly known in children who develop celiac disease (CD). The aim of our study was to compare the microbiota composition and the concentrations of immune markers in breast milk from mothers whose offspring carried the genetic predisposition to CD, and whether they did or did not develop CD during follow-up for the first 3 years of life. Maternal breast milk samples [CD children (n = 6) and healthy children (n = 18)] were collected 3 months after delivery. Enzyme-linked immunosorbent assays were used to measure TGF-β1, TGF-β2, sIgA, MFG-E8 and sCD14. For microbiota analysis, next generation (Illumina) sequencing, real-time PCR and denaturing gradient gel electrophoresis were used. Phylotype abundance and the Shannon ‘H’ diversity index were significantly higher in breast milk samples in the CD group. There was higher prevalence of the phyla Bacteroidetes and Fusobacteria, the classes Clostridia and Fusobacteriia, and the genera Leptotrichia, Anaerococcus, Sphingomonas, Actynomyces and Akkermansia in the CD group. The immunological markers were differently associated with some Gram-negative bacterial genera and species (Chryseobacterium, Sphingobium) as well as Gram-positive species (Lactobacillusreuteri, Bifidobacteriumanimalis). In conclusion, the microbiota in breast milk from mothers of genetically predisposed offspring who presented CD showed a higher bacterial phylotype abundance and diversity, as well as a different bacterial composition, as compared with the mothers of unaffected offspring. These immune markers showed some associations with bacterial composition and may influence the risk for development of CD beyond early childhood.
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Affiliation(s)
- Jelena Štšepetova
- Department of Microbiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila Street 19, 50411, Tartu, Estonia.
| | - Kärt Simre
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, 50411, Tartu, Estonia. .,Children's Clinic, Tartu University Hospital, Lunini 6, 50406, Tartu, Estonia.
| | - Aili Tagoma
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, 50411, Tartu, Estonia
| | - Oivi Uibo
- Children's Clinic, Tartu University Hospital, Lunini 6, 50406, Tartu, Estonia.,Department of Pediatrics, Institute of Clinical Medicine, University of Tartu, Lunini 6, 50406, Tartu, Estonia
| | - Aleksandr Peet
- Children's Clinic, Tartu University Hospital, Lunini 6, 50406, Tartu, Estonia.,Department of Pediatrics, Institute of Clinical Medicine, University of Tartu, Lunini 6, 50406, Tartu, Estonia
| | - Heli Siljander
- Pediatric Research Center, Children's Hospital, University of Helsinki, Helsinki University Hospital, Stenbäckinkatu 9, PO Box 347, Helsinki, Finland.,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Biomedicum 1, Haartmaninkatu 8, 00290, Helsinki, Finland.,Center of Military Medicine, Finnish Defence Forces Logistics Command, Tampere, Finland
| | - Vallo Tillmann
- Children's Clinic, Tartu University Hospital, Lunini 6, 50406, Tartu, Estonia.,Department of Pediatrics, Institute of Clinical Medicine, University of Tartu, Lunini 6, 50406, Tartu, Estonia
| | - Mikael Knip
- Pediatric Research Center, Children's Hospital, University of Helsinki, Helsinki University Hospital, Stenbäckinkatu 9, PO Box 347, Helsinki, Finland.,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Biomedicum 1, Haartmaninkatu 8, 00290, Helsinki, Finland.,Center for Child Health Research, Tampere University Hospital, Teiskontie 35, 33520, Tampere, Finland
| | - Reet Mändar
- Department of Microbiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila Street 19, 50411, Tartu, Estonia.,Competence Center on Health Technologies, Teaduspargi 13, 50411, Tartu, Estonia
| | - Raivo Uibo
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, 50411, Tartu, Estonia
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7
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Wang S, Wei Y, Liu L, Li Z. Association Between Breastmilk Microbiota and Food Allergy in Infants. Front Cell Infect Microbiol 2022; 11:770913. [PMID: 35096637 PMCID: PMC8790183 DOI: 10.3389/fcimb.2021.770913] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 12/17/2021] [Indexed: 12/27/2022] Open
Abstract
Regulating the composition of human breastmilk has the potential to prevent allergic diseases early in life. The composition of breastmilk is complex, comprising varying levels of oligosaccharides, immunoactive molecules, vitamins, metabolites, and microbes. Although several studies have examined the relationship between different components of breastmilk and infant food allergies, few have investigated the relationship between microorganisms in breastmilk and infant food allergy. In the present study, we selected 135 healthy pregnant women and their full-term newborns from a cohort of 202 mother-infant pairs. Among them, 69 infants were exclusively breastfed until 6 mo after birth. At follow-up, 11 of the 69 infants developed a food allergy in infancy while 22 showed no signs of allergy. Thirty-three breastmilk samples were collected within 1 mo after delivery, and 123 infant fecal samples were collected at five time points following their birth. These samples were analyzed using microbial 16S rRNA gene sequencing. The abundance and evenness of the milk microbiota and the number of differential bacteria were higher in the breastmilk samples from the non-allergy group than in those from the food allergy group. The non-allergy group showed relatively high abundance of Bifidobacterium, Akkermansia, Clostridium IV, Clostridium XIVa, Veillonella, and butyrate-producing bacteria such as Fusobacterium, Lachnospiraceae incertae sedis, Roseburia, and Ruminococcus. In contrast, the abundance of Proteobacteria, Acinetobacter, and Pseudomonas in breastmilk was higher in the food allergy group. A comparison of the changes in dominant differential breastmilk microbiota in the intestinal flora of the two groups of infants over time revealed that the changes in Bifidobacterium abundance were consistent with those in the breastmilk flora. Functional pathway prediction of breastmilk microflora showed that the enhancement of the metabolic pathways of tyrosine, tryptophan, and fatty acids was significantly different between the groups. We suggest that changes in the breastmilk microbiota can influence the development of food allergies. Breastmilk contains several microbes that have protective effects against food allergies, both by influencing the colonization of intestinal microbiota and by producing butyrate. This study may provide new ideas for improving infant health through early intervention with probiotics.
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Affiliation(s)
- Shuo Wang
- Department of Pediatrics, Peking University Third Hospital, Beijing, China
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Luyan Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Zailing Li
- Department of Pediatrics, Peking University Third Hospital, Beijing, China
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8
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de Weerth C, Aatsinki AK, Azad MB, Bartol FF, Bode L, Collado MC, Dettmer AM, Field CJ, Guilfoyle M, Hinde K, Korosi A, Lustermans H, Mohd Shukri NH, Moore SE, Pundir S, Rodriguez JM, Slupsky CM, Turner S, van Goudoever JB, Ziomkiewicz A, Beijers R. Human milk: From complex tailored nutrition to bioactive impact on child cognition and behavior. Crit Rev Food Sci Nutr 2022; 63:7945-7982. [PMID: 35352583 DOI: 10.1080/10408398.2022.2053058] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human milk is a highly complex liquid food tailor-made to match an infant's needs. Beyond documented positive effects of breastfeeding on infant and maternal health, there is increasing evidence that milk constituents also impact child neurodevelopment. Non-nutrient milk bioactives would contribute to the (long-term) development of child cognition and behavior, a process termed 'Lactocrine Programming'. In this review we discuss the current state of the field on human milk composition and its links with child cognitive and behavioral development. To promote state-of-the-art methodologies and designs that facilitate data pooling and meta-analytic endeavors, we present detailed recommendations and best practices for future studies. Finally, we determine important scientific gaps that need to be filled to advance the field, and discuss innovative directions for future research. Unveiling the mechanisms underlying the links between human milk and child cognition and behavior will deepen our understanding of the broad functions of this complex liquid food, as well as provide necessary information for designing future interventions.
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Affiliation(s)
- Carolina de Weerth
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, EN Nijmegen, The Netherlands
| | - Anna-Katariina Aatsinki
- FinnBrain Birth Cohort Study, Turku Brain and Mind Center, Department of Clinical Medicine, University of Turku, Turku, Finland
| | - Meghan B Azad
- Department of Pediatrics and Child Health, Manitoba Interdisciplinary Lactation Centre, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Frank F Bartol
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Lars Bode
- Department of Pediatrics and Mother-Milk-Infant Center of Research Excellence (MOMI CORE), University of California San Diego, La Jolla, California, USA
| | - Maria Carmen Collado
- Department of Biotechnology, Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), Paterna, Valencia, Spain
| | - Amanda M Dettmer
- Yale Child Study Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Catherine J Field
- Department of Agricultural, Food and Nutritional Science, College of Basic and Applied Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Meagan Guilfoyle
- Department of Anthropology, Indiana University, Bloomington, Indiana, USA
| | - Katie Hinde
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA
| | - Aniko Korosi
- Swammerdam Institute for Life Sciences, Center for Neuroscience, Brain Plasticity group, University of Amsterdam, Amsterdam, The Netherlands
| | - Hellen Lustermans
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, EN Nijmegen, The Netherlands
| | - Nurul Husna Mohd Shukri
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Sophie E Moore
- Department of Women & Children's Health, King's College London, St Thomas' Hospital, London, UK
- School of Hygiene and Tropical Medicine, Nutrition Theme, MRC Unit The Gambia and the London, Fajara, The GambiaBanjul
| | - Shikha Pundir
- The Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Juan Miguel Rodriguez
- Department of Nutrition and Food Science, Complutense University of Madrid, Madrid, Spain
| | - Carolyn M Slupsky
- Department of Nutrition and Department of Food Science and Technology, University of California, Davis, California, USA
| | - Sarah Turner
- Department of Community Health Sciences, Manitoba Interdisciplinary Lactation Centre, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Johannes B van Goudoever
- Department of Pediatrics, Amsterdam UMC, University of Amsterdam, Vrije Universiteit, Emma Children's Hospital, Amsterdam, The Netherlands
| | - Anna Ziomkiewicz
- Department of Anthropology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Roseriet Beijers
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, EN Nijmegen, The Netherlands
- Department of Social Development, Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands
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9
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Yang XY, Liu YH, Jiang HY, Ying XH. Cesarean section is not associated with increased risk of celiac disease in the offspring: a meta-analysis. J Matern Fetal Neonatal Med 2022; 35:9570-9577. [PMID: 35264064 DOI: 10.1080/14767058.2022.2048813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Epidemiologic findings are inconsistent concerning the association between cesarean section (C-section) and celiac disease in offspring. METHODS We performed a systematic literature search of PubMed and Embase databases until July 2021. A meta-analysis was performed for each outcome in which a summary odds ratio (OR) was calculated while taking heterogeneity into account. RESULTS A total of 11 observational were identified for the literature review. We found that C-section was not associated with an increase in the risk of CD (OR = 1.03, 95% CI, 0.95-1.12; p = .501). In subgroup analyses, the association remained insignificant for both infants born after elective C-section (OR 1.05; 0.95-1.16; p = .329) and emergency C-section (OR 1.06; 1-1.13; p = .051). CONCLUSIONS Our results indicate that C-section is not associated with CD in offspring.
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Affiliation(s)
- Xin-Yu Yang
- Department of Gynaecology and Obstetrics, First People's Hospital of Taizhou, Taizhou, China
| | - Yi-Hui Liu
- Department of Gastroenterology, Hospital of Zhejiang Red Cross, Hangzhou, China
| | - Hai-Yin Jiang
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xian-Hua Ying
- Department of Gynaecology and Obstetrics, First People's Hospital of Taizhou, Taizhou, China
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10
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Olivares M, Flor-Duro A, Sanz Y. Manipulation of the gut microbiome in gluten-intolerance. Curr Opin Clin Nutr Metab Care 2021; 24:536-542. [PMID: 34622826 DOI: 10.1097/mco.0000000000000791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Gluten is a complex mixture of highly immunogenic glutamine- and proline-rich proteins found in some cereals. In celiac disease (CeD), gluten triggers an autoimmune response due to its interaction with the human leukocyte antigen heterodimers that confer the genetic risk. The involvement of gluten in other disorders has also been investigated, but its role beyond CeD is still unclear. Here, we review the most recent evidence of the involvement of gluten in diseases and the opportunities of manipulating the gut microbiota to treat or prevent gluten-related conditions. RECENT FINDINGS Most of the new studies have been conducted in the context of CeD, where important evidence has been gained on associations between the gut microbiota, genotype, and environmental factors such as breastfeeding and antibiotics. The role of the microbiota has been investigated in several prospective, observational and interventional studies with probiotics, which together showed that the gut microbiota could be targeted to ameliorate and aid in the prevention of CeD development. SUMMARY Several studies have evidenced how genetic and environmental factors influence the gut microbiome with consequences in CeD. These findings could inspire the development of microbiota modulation strategies to support the prevention or treatment of CeD.
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Affiliation(s)
- Marta Olivares
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain
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11
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Verdu EF, Schuppan D. Co-factors, Microbes, and Immunogenetics in Celiac Disease to Guide Novel Approaches for Diagnosis and Treatment. Gastroenterology 2021; 161:1395-1411.e4. [PMID: 34416277 DOI: 10.1053/j.gastro.2021.08.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 12/14/2022]
Abstract
Celiac disease (CeD) is a frequent immune-mediated disease that affects not only the small intestine but also many extraintestinal sites. The role of gluten proteins as dietary triggers, HLA-DQ2 or -DQ8 as major necessary genetic predisposition, and tissue transglutaminase (TG2) as mechanistically involved autoantigen, are unique features of CeD. Recent research implicates many cofactors working in synergism with these key triggers, including the intestinal microbiota and their metabolites, nongluten dietary triggers, intestinal barrier defects, novel immune cell phenotypes, and mediators and cytokines. In addition, apart from HLA-DQ2 and -DQ8, multiple and complex predisposing genetic factors and interactions have been defined, most of which overlap with predispositions in other, usually autoimmune, diseases that are linked to CeD. The resultant better understanding of CeD pathogenesis, and its manifold manifestations has already paved the way for novel therapeutic approaches beyond the lifelong strict gluten-free diet, which poses a burden to patients and often does not lead to complete mucosal healing. Thus, supported by improved mouse models for CeD and in vitro organoid cultures, several targeted therapies are in phase 2-3 clinical studies, such as highly effective gluten-degrading oral enzymes, inhibition of TG2, cytokine therapies, induction of tolerance to gluten ingestion, along with adjunctive and preventive approaches using beneficial probiotics and micronutrients. These developments are supported by novel noninvasive markers of CeD severity and activity that may be used as companion diagnostics, allow easy-to perform and reliable monitoring of patients, and finally support personalized therapy for CeD.
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Affiliation(s)
- Elena F Verdu
- Division of Gastroenterology, Department of Internal Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada
| | - Detlef Schuppan
- Institute of Translational Immunology,Research Center for Immune Therapy and Celiac Center, University Medical Center, Johannes Gutenberg University, Mainz, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
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Gołębiewski M, Łoś-Rycharska E, Sikora M, Grzybowski T, Gorzkiewicz M, Krogulska A. Mother's Milk Microbiome Shaping Fecal and Skin Microbiota in Infants with Food Allergy and Atopic Dermatitis: A Pilot Analysis. Nutrients 2021; 13:nu13103600. [PMID: 34684601 PMCID: PMC8537811 DOI: 10.3390/nu13103600] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 01/04/2023] Open
Abstract
The child microbiome, including gut and skin communities, is shaped by a multitude of factors, and breastfeeding is one of the most essential. Food allergy (FA) and atopic dermatitis (AD) are among the most common diseases in pediatrics, with the prevalence of each up to 6% and 20%, respectively. Therefore, we aimed at finding differences between the fecal and skin microbiomes of FA and AD patients in the context of breastfeeding, by means of the Illumina sequencing of 16S rRNA gene fragment libraries amplified from the total DNA isolated from samples collected from allergic and healthy infants. We also analyzed milk samples from the mothers of the examined children and searched for patterns of incidence suggesting milk influence on an infant's allergy status. Here we show that a mother's milk influences her child's fecal and skin microbiomes and identify Acinetobacter as the taxon whose abundance is correlated with milk and child-derived samples. We demonstrate that breastfeeding makes allergic children's fecal and skin communities more similar to those of healthy infants than in the case of formula-feeding. We also identify signature taxa that might be important in maintaining health or allergy development.
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Affiliation(s)
- Marcin Gołębiewski
- Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, 87-100 Torun, Poland
- Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, 87-100 Torun, Poland;
- Correspondence: (M.G.); (E.Ł.-R.); Tel.: +48-56-611-2512 (M.G.); +48-52-585-4850 (E.Ł.-R.); Fax: +48-56-611-4559 (M.G.); +48-52-585-4086 (E.Ł.-R.)
| | - Ewa Łoś-Rycharska
- Department of Pediatrics, Allergology and Gastroenterology, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland;
- Correspondence: (M.G.); (E.Ł.-R.); Tel.: +48-56-611-2512 (M.G.); +48-52-585-4850 (E.Ł.-R.); Fax: +48-56-611-4559 (M.G.); +48-52-585-4086 (E.Ł.-R.)
| | - Marcin Sikora
- Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, 87-100 Torun, Poland;
| | - Tomasz Grzybowski
- Department of Forensic Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland; (T.G.); (M.G.)
| | - Marta Gorzkiewicz
- Department of Forensic Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland; (T.G.); (M.G.)
| | - Aneta Krogulska
- Department of Pediatrics, Allergology and Gastroenterology, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland;
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Selma-Royo M, Calvo Lerma J, Cortés-Macías E, Collado MC. Human milk microbiome: From actual knowledge to future perspective. Semin Perinatol 2021; 45:151450. [PMID: 34274151 DOI: 10.1016/j.semperi.2021.151450] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human milk is the gold standard for infant nutrition during the first months of life since it is perfectly adapted to the neonatal nutritional requirements and supports infant growth and development. Human milk contains a complex nutritional and bioactive composition including microorganisms and oligosaccharides which would also contribute to the gut and immune system maturation. Despite the growing evidence, the factors contributing to milk microbes' variations and the potential functions on the infant's gut are still uncovered. This short-review provides a general overview of milk microbiota, potential factors shaping its composition, contribution to the infant microbiota and immune system development, including the suggested biological relevance for infant health as well as the description of tools and strategies aimed to restore and module microbes in milk.
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Affiliation(s)
- Marta Selma-Royo
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia (Spain).
| | - Joaquim Calvo Lerma
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia (Spain)
| | - Erika Cortés-Macías
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia (Spain)
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia (Spain).
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14
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Olshan KL, Zomorrodi AR, Pujolassos M, Troisi J, Khan N, Fanelli B, Kenyon V, Fasano A, Leonard MM. Microbiota and Metabolomic Patterns in the Breast Milk of Subjects with Celiac Disease on a Gluten-Free Diet. Nutrients 2021; 13:nu13072243. [PMID: 34210038 PMCID: PMC8308312 DOI: 10.3390/nu13072243] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/14/2021] [Accepted: 06/25/2021] [Indexed: 12/30/2022] Open
Abstract
The intestinal microbiome may trigger celiac disease (CD) in individuals with a genetic disposition when exposed to dietary gluten. Research demonstrates that nutrition during infancy is crucial to the intestinal microbiome engraftment. Very few studies to date have focused on the breast milk composition of subjects with a history of CD on a gluten-free diet. Here, we utilize a multi-omics approach with shotgun metagenomics to analyze the breast milk microbiome integrated with metabolome profiling of 36 subjects, 20 with CD on a gluten-free diet and 16 healthy controls. These analyses identified significant differences in bacterial and viral species/strains and functional pathways but no difference in metabolite abundance. Specifically, three bacterial strains with increased abundance were identified in subjects with CD on a gluten-free diet of which one (Rothia mucilaginosa) has been previously linked to autoimmune conditions. We also identified five pathways with increased abundance in subjects with CD on a gluten-free diet. We additionally found four bacterial and two viral species/strains with increased abundance in healthy controls. Overall, the differences observed in bacterial and viral species/strains and in functional pathways observed in our analysis may influence microbiome engraftment in neonates, which may impact their future clinical outcomes.
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Affiliation(s)
- Katherine L. Olshan
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School, Boston, MA 02114, USA; (K.L.O.); (A.R.Z.); (A.F.)
- Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Boston, MA 02129, USA;
- Department of Pediatrics, Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, USA
| | - Ali R. Zomorrodi
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School, Boston, MA 02114, USA; (K.L.O.); (A.R.Z.); (A.F.)
- Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Boston, MA 02129, USA;
- Department of Pediatrics, Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, USA
| | | | - Jacopo Troisi
- Theoreo srl, University of Salerno, 84084 Salerno, Italy; (M.P.); (J.T.)
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, 84084 Salerno, Italy
- European Biomedical Research Institute of Salerno (EBRIS), Via S. De Renzi, 50, 84125 Salerno, Italy
| | - Nayeim Khan
- CosmosID Inc., Rockville, MD 20850, USA; (N.K.); (B.F.)
| | - Brian Fanelli
- CosmosID Inc., Rockville, MD 20850, USA; (N.K.); (B.F.)
| | - Victoria Kenyon
- Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Boston, MA 02129, USA;
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, USA
| | - Alessio Fasano
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School, Boston, MA 02114, USA; (K.L.O.); (A.R.Z.); (A.F.)
- Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Boston, MA 02129, USA;
- Department of Pediatrics, Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, USA
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, 84084 Salerno, Italy
| | - Maureen M. Leonard
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School, Boston, MA 02114, USA; (K.L.O.); (A.R.Z.); (A.F.)
- Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Boston, MA 02129, USA;
- Department of Pediatrics, Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Celiac Research Program, Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
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15
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Bangarusamy DK, Lakshmanan AP, Al-Zaidan S, Alabduljabbar S, Terranegra A. Nutri-epigenetics: the effect of maternal diet and early nutrition on the pathogenesis of autoimmune diseases. Minerva Pediatr (Torino) 2021; 73:98-110. [PMID: 33880901 DOI: 10.23736/s2724-5276.20.06166-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Autoimmune diseases comprise a wide group of diseases involving a self-response of the immune system against the host. The etiopathogenesis is very complex involving disease-specific factors but also environmental factors, among which the diet. Maternal diet during pregnancy as well as early nutrition recently attracted the interest of the scientists as contributing to the immune programming. In this paper, we reviewed the most recent literature on the effect of maternal diet and early nutrition in modulating the immune system in a selected subset of autoimmune diseases: type 1 diabetes, celiac disease, inflammatory bowel disease, juvenile idiopathic arthritis and rheumatoid arthritis. Particularly, we focused our narrative on the role of maternal and perinatal nutrition in the epigenetic mechanisms underlying the auto-immune response. Maternal diet during pregnancy as well as breastfeeding and early nutrition play a big role in many epigenetic mechanisms. Most of the nutrients consumed by the mother and the infant are known exerting epigenetic functions, such as folate, methionine, zinc, vitamins B12 and D, fibers, casein and gliadin, and they were linked to gene expression changes in the immune pathways. Despite the common role of maternal diet, breastfeeding and early nutrition in almost all the autoimmune diseases, each disease seems to have specific diet-driver epigenetic mechanisms that require further investigations. The research in this field is opening new routes to establishing a precision nutrition approach to the auto-immune diseases.
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Affiliation(s)
- Dhinoth K Bangarusamy
- Unit of Maternal and Child Health, Department of Research, Sidra Medicine, Doha, Qatar
| | - Arun P Lakshmanan
- Unit of Maternal and Child Health, Department of Research, Sidra Medicine, Doha, Qatar
| | - Sara Al-Zaidan
- Unit of Maternal and Child Health, Department of Research, Sidra Medicine, Doha, Qatar
| | - Shaikha Alabduljabbar
- Unit of Maternal and Child Health, Department of Research, Sidra Medicine, Doha, Qatar
| | - Annalisa Terranegra
- Unit of Maternal and Child Health, Department of Research, Sidra Medicine, Doha, Qatar -
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Abstract
Aging is characterized by the functional decline of tissues and organs and increased risk of aging-associated disorders, which pose major societal challenges and are a public health priority. Despite extensive human genetics studies, limited progress has been made linking genetics with aging. There is a growing realization that the altered assembly, structure and dynamics of the gut microbiota actively participate in the aging process. Age-related microbial dysbiosis is involved in reshaping immune responses during aging, which manifest as immunosenescence (insufficiency) and inflammaging (over-reaction) that accompany many age-associated enteric and extraenteric diseases. The gut microbiota can be regulated, suggesting a potential target for aging interventions. This review summarizes recent findings on the physiological succession of gut microbiota across the life-cycle, the roles and mechanisms of gut microbiota in healthy aging, alterations of gut microbiota and aging-associated diseases, and the gut microbiota-targeted anti-aging strategies.
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Affiliation(s)
- Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xia Liu
- Department of Intensive Care Unit, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiwen Cheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiumei Yan
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, Zhejiang, China
| | - Shaochang Wu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Olshan KL, Leonard MM, Serena G, Zomorrodi AR, Fasano A. Gut microbiota in Celiac Disease: microbes, metabolites, pathways and therapeutics. Expert Rev Clin Immunol 2020; 16:1075-1092. [PMID: 33103934 DOI: 10.1080/1744666x.2021.1840354] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Current evidence supports a vital role of the microbiota on health outcomes, with alterations in an otherwise healthy balance linked to chronic medical conditions like celiac disease (CD). Recent advances in microbiome analysis allow for unparalleled profiling of the microbes and metabolites. With the growing volume of data available, trends are emerging that support a role for the gut microbiota in CD pathogenesis. AREAS COVERED In this article, the authors review the relationship between factors such as genes and antibiotic exposure on CD onset and the intestinal microbiota. The authors also review other microbiota within the human body (like the oropharynx) that may play a role in CD pathogenesis. Finally, the authors discuss implications for disease modification and the ultimate goal of prevention. The authors reviewed literature from PubMed, EMBASE, and Web of Science. EXPERT OPINION CD serves as a unique opportunity to explore the role of the intestinal microbiota on the development of chronic autoimmune disease. While research to date provides a solid foundation, most studies have been case-control and thus do not have capacity to explore the mechanistic role of the microbiota in CD onset. Further longitudinal studies and integrated multi-omics are necessary for investigating CD pathogenesis.
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Affiliation(s)
- Katherine L Olshan
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Celiac Research Program, Harvard Medical School , Boston, MA, USA
| | - Maureen M Leonard
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Celiac Research Program, Harvard Medical School , Boston, MA, USA
| | - Gloria Serena
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Celiac Research Program, Harvard Medical School , Boston, MA, USA
| | - Ali R Zomorrodi
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Celiac Research Program, Harvard Medical School , Boston, MA, USA
| | - Alessio Fasano
- Division of Pediatric Gastroenterology and Nutrition, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,Mucosal Immunology and Biology Research Center, MassGeneral Hospital for Children, Harvard Medical School , Boston, MA, USA.,European Biomedical Research Institute of Salerno (EBRIS) , Salerno, Italy
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18
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Konttinen O, Carmody J, Pathuri S, Anderson K, Zhou X, Reich N. Cell cycle regulated DNA methyltransferase: fluorescent tracking of a DNA strand-separation mechanism and identification of the responsible protein motif. Nucleic Acids Res 2020; 48:11589-11601. [PMID: 33053173 PMCID: PMC7672430 DOI: 10.1093/nar/gkaa844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/10/2020] [Accepted: 09/23/2020] [Indexed: 12/23/2022] Open
Abstract
DNA adenine methylation by Caulobacter crescentus Cell Cycle Regulated Methyltransferase (CcrM) is an important epigenetic regulator of gene expression. The recent CcrM-DNA cocrystal structure shows the CcrM dimer disrupts four of the five base pairs of the (5'-GANTC-3') recognition site. We developed a fluorescence-based assay by which Pyrrolo-dC tracks the strand separation event. Placement of Pyrrolo-dC within the DNA recognition site results in a fluorescence increase when CcrM binds. Non-cognate sequences display little to no fluorescence changes, showing that strand separation is a specificity determinant. Conserved residues in the C-terminal segment interact with the phospho-sugar backbone of the non-target strand. Replacement of these residues with alanine results in decreased methylation activity and changes in strand separation. The DNA recognition mechanism appears to occur with the Type II M.HinfI DNA methyltransferase and an ortholog of CcrM, BabI, but not with DNA methyltransferases that lack the conserved C-terminal segment. The C-terminal segment is found broadly in N4/N6-adenine DNA methyltransferases, some of which are human pathogens, across three Proteobacteria classes, three other phyla and in Thermoplasma acidophilum, an Archaea. This Pyrrolo-dC strand separation assay should be useful for the study of other enzymes which likely rely on a strand separation mechanism.
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Affiliation(s)
- Olivia Konttinen
- Biomolecular Science and Engineering, University of California Santa Barbara, Santa Barbara, CA 93103, USA
| | - Jason Carmody
- Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93103, USA
| | - Sarath Pathuri
- Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93103, USA
| | - Kyle Anderson
- Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93103, USA
| | - Xiaofeng Zhou
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | - Norbert Reich
- Biomolecular Science and Engineering, University of California Santa Barbara, Santa Barbara, CA 93103, USA
- Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93103, USA
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