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Denizli M, Ropa J, Beasley L, Ghosh J, DeVanna K, Spice T, Haneline LS, Capitano M, Kua KL. Glucose intolerance as a consequence of hematopoietic stem cell dysfunction in offspring of obese mice. Mol Metab 2024; 88:102008. [PMID: 39142562 DOI: 10.1016/j.molmet.2024.102008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 07/22/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024] Open
Abstract
OBJECTIVE Maternal obesity is increasingly common and negatively impacts offspring health. Children of mothers with obesity are at higher risk of developing diseases linked to hematopoietic system abnormalities and metabolism such as type 2 diabetes. Interestingly, disease risks are often dependent on the offspring's sex, suggesting sex-specific reprogramming effect of maternal obesity on offspring hematopoietic stem and progenitor cell (HSPC) function. However, the impact of maternal obesity exposure on offspring HSPC function, and the capability of HSPC to regulate offspring metabolic health is largely understudied. This study aims to test the hypothesis that offspring of obese mice exhibit sex-differences in HSPC function that affect offspring's metabolic health. METHODS We first assessed bone marrow hematopoietic stem and progenitor cell phenotype using postnatal day 21 (P21) and 8-week-old C57BL/6J mice born to control and diet-induced obese dams. We also sorted HSPC (Lineage-, Sca1+, cKit + cells) from P21 mice for competitive primary and secondary transplant, as well as transcriptomic analysis. Body weight, adiposity, insulin tolerance test and glucose tolerance tests were performed in primary and secondary transplant recipient animals. RESULTS We discovered sex-differences in offspring HSPC function in response to maternal obesity exposure, where male offspring of obese dams (MatOb) showed decreased HSPC numbers and engraftment, while female MatOb offspring remained largely unaffected. RNA-seq revealed immune stimulatory pathways in female MatOb offspring. Finally, only recipients of male MatOb offspring HSPC exhibited glucose intolerance. CONCLUSIONS This study demonstrated the lasting effect of maternal obesity exposure on offspring HSPC function and implicates HSPC in metabolic regulation.
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Affiliation(s)
- Merve Denizli
- Department of Pediatrics, Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - James Ropa
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, 46202, USA; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Lindsay Beasley
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Joydeep Ghosh
- Department of Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Kelli DeVanna
- Department of Pediatrics, Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Taylor Spice
- Department of Pediatrics, Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Laura S Haneline
- Department of Pediatrics, Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA; Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, 46202, USA; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, 46202, USA
| | - Maegan Capitano
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, 46202, USA.
| | - Kok Lim Kua
- Department of Pediatrics, Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA; Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, 46202, USA; Center for Diabetes and Metabolic Disease, Indiana University School of Medicine, Indianapolis, 46202, USA; Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, 46202, USA.
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Warmington AV, Bowdish DM, Sherifali D, Sloboda DM. A Scoping Review of the Relationship Between Maternal BMI and Offspring Incidence of Respiratory Infection: Where Do We Go From Here? AJPM FOCUS 2024; 3:100234. [PMID: 38933528 PMCID: PMC11200298 DOI: 10.1016/j.focus.2024.100234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Introduction Pregnancy complications, including high maternal BMI, are associated with altered early development and child health outcomes. A growing body of work links the prenatal environment, specifically maternal BMI, with respiratory infections in offspring. In this rapid review, the authors review the literature supporting the hypothesis that high maternal BMI during pregnancy is associated with childhood respiratory infection incidence. Methods The authors employed systematic search criteria in known databases-EMBASE, EMCARE, MEDLINE, CINAHL, and PsychINFO-searching from inception to January 2023. Included were primary research studies that involved (1) human pregnancy, (2) pregravid or gestational overweight or obesity, and (3) childhood respiratory infection with or without hospitalization. Results Only 7 population-based cohort studies met the criteria, investigating maternal BMI as an exposure and childhood respiratory infection as an outcome (age 6 months to 18 years). Therefore, the authors conducted a qualitative analysis, and outcomes were reported. The authors found that >85% of the albeit few published studies support the hypothesis that maternal BMI may have independent and profound consequences on respiratory infection risk across childhood. Discussion This area of research needs large-scale, well-controlled studies to better understand the relationship between maternal BMI and childhood respiratory infection. Possible resources such as cohort catalogs and combined databases are discussed. These findings add to the growing evidence that early environmental factors influence lifelong respiratory health. By incorporating a life course approach to infectious disease risk, policy makers can put this research to work and target health vulnerabilities before they arise.
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Affiliation(s)
| | - Dawn M.E. Bowdish
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
- Firestone Institute for Respiratory Health, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Diana Sherifali
- School of Nursing, McMaster University, Hamilton, Ontario, Canada
| | - Deborah M. Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
- Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
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Nelson BN, Friedman JE. Developmental Programming of the Fetal Immune System by Maternal Western-Style Diet: Mechanisms and Implications for Disease Pathways in the Offspring. Int J Mol Sci 2024; 25:5951. [PMID: 38892139 PMCID: PMC11172957 DOI: 10.3390/ijms25115951] [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: 04/18/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Maternal obesity and over/undernutrition can have a long-lasting impact on offspring health during critical periods in the first 1000 days of life. Children born to mothers with obesity have reduced immune responses to stimuli which increase susceptibility to infections. Recently, maternal western-style diets (WSDs), high in fat and simple sugars, have been associated with skewing neonatal immune cell development, and recent evidence suggests that dysregulation of innate immunity in early life has long-term consequences on metabolic diseases and behavioral disorders in later life. Several factors contribute to abnormal innate immune tolerance or trained immunity, including changes in gut microbiota, metabolites, and epigenetic modifications. Critical knowledge gaps remain regarding the mechanisms whereby these factors impact fetal and postnatal immune cell development, especially in precursor stem cells in bone marrow and fetal liver. Components of the maternal microbiota that are transferred from mothers consuming a WSD to their offspring are understudied and identifying cause and effect on neonatal innate and adaptive immune development needs to be refined. Tools including single-cell RNA-sequencing, epigenetic analysis, and spatial location of specific immune cells in liver and bone marrow are critical for understanding immune system programming. Considering the vital role immune function plays in offspring health, it will be important to understand how maternal diets can control developmental programming of innate and adaptive immunity.
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Affiliation(s)
- Benjamin N. Nelson
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Jacob E. Friedman
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
- Department of Physiology and Biochemistry, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Pediatrics, Section of Diabetes and Endocrinology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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Tzeng HT, Lee WC. Impact of Transgenerational Nutrition on Nonalcoholic Fatty Liver Disease Development: Interplay between Gut Microbiota, Epigenetics and Immunity. Nutrients 2024; 16:1388. [PMID: 38732634 PMCID: PMC11085251 DOI: 10.3390/nu16091388] [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: 03/15/2024] [Revised: 04/25/2024] [Accepted: 05/01/2024] [Indexed: 05/13/2024] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) has emerged as the most prevalent pediatric liver disorder, primarily attributed to dietary shifts in recent years. NAFLD is characterized by the accumulation of lipid species in hepatocytes, leading to liver inflammation that can progress to steatohepatitis, fibrosis, and cirrhosis. Risk factors contributing to NAFLD encompass genetic variations and metabolic disorders such as obesity, diabetes, and insulin resistance. Moreover, transgenerational influences, resulting in an imbalance of gut microbial composition, epigenetic modifications, and dysregulated hepatic immune responses in offspring, play a pivotal role in pediatric NAFLD development. Maternal nutrition shapes the profile of microbiota-derived metabolites in offspring, exerting significant influence on immune system regulation and the development of metabolic syndrome in offspring. In this review, we summarize recent evidence elucidating the intricate interplay between gut microbiota, epigenetics, and immunity in fetuses exposed to maternal nutrition, and its impact on the onset of NAFLD in offspring. Furthermore, potential therapeutic strategies targeting this network are also discussed.
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Affiliation(s)
- Hong-Tai Tzeng
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan;
| | - Wei-Chia Lee
- Division of Urology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33332, Taiwan
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Barbosa P, Pinho A, Lázaro A, Paula D, Tralhão JG, Paiva A, Pereira MJ, Carvalho E, Laranjeira P. Bariatric Surgery Induces Alterations in the Immune Profile of Peripheral Blood T Cells. Biomolecules 2024; 14:219. [PMID: 38397455 PMCID: PMC10886753 DOI: 10.3390/biom14020219] [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: 11/08/2023] [Revised: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Low-grade inflammation is closely linked to obesity and obesity-related comorbidities; therefore, immune cells have become an important topic in obesity research. Here, we performed a deep phenotypic characterization of circulating T cells in people with obesity, using flow cytometry. Forty-one individuals with obesity (OB) and clinical criteria for bariatric surgery were enrolled in this study. We identified and quantified 44 different circulating T cell subsets and assessed their activation status and the expression of immune-checkpoint molecules, immediately before (T1) and 7-18 months after (T2) the bariatric surgery. Twelve age- and sex-matched healthy individuals (nOB) were also recruited. The OB participants showed higher leukocyte counts and a higher percentage of neutrophils. The percentage of circulating Th1 cells were negatively correlated to HbA1c and insulin levels. OB Th1 cells displayed a higher activation status and lower PD-1 expression. The percentage of Th17 and Th1/17 cells were increased in OB, whereas the CD4+ Tregs' percentage was decreased. Interestingly, a higher proportion of OB CD4+ Tregs were polarized toward Th1- and Th1/17-like cells and expressed higher levels of CCR5. Bariatric surgery induced the recovery of CD4+ Treg cell levels and the expansion and activation of Tfh and B cells. Our results show alterations in the distribution and phenotype of circulating T cells from OB people, including activation markers and immune-checkpoint proteins, demonstrating that different metabolic profiles are associated to distinct immune profiles, and both are modulated by bariatric surgery.
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Affiliation(s)
- Pedro Barbosa
- University of Coimbra, Institute for Interdisciplinary Research, Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), 3030-789 Coimbra, Portugal;
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, 3030-789 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
| | - Aryane Pinho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Department of Life Science, University of Coimbra, 3000-456 Coimbra, Portugal
| | - André Lázaro
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
| | - Diogo Paula
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
| | - José G. Tralhão
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; (A.L.); (D.P.); (J.G.T.)
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Artur Paiva
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal
- Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, 3046-854 Coimbra, Portugal
| | - Maria J. Pereira
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, SE-75185 Uppsala, Sweden;
| | - Eugenia Carvalho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Institute for Interdisciplinary Research (IIIUC), University of Coimbra, 3030-789 Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
| | - Paula Laranjeira
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal;
- Clinical Academic Center of Coimbra (CACC), 3004-061 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal
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Kweon JY, Mun H, Choi MR, Kim HS, Ahn YJ. Maternal obesity induced metabolic disorders in offspring and myeloid reprogramming by epigenetic regulation. Front Endocrinol (Lausanne) 2024; 14:1256075. [PMID: 38292775 PMCID: PMC10824939 DOI: 10.3389/fendo.2023.1256075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/27/2023] [Indexed: 02/01/2024] Open
Abstract
Maternal obesity and gestational diabetes are associated with childhood obesity and increased cardiovascular risk. In this review, we will discuss and summarize extensive clinical and experimental studies that metabolically imbalanced environment exposure in early life plays a critical role in influencing later susceptibility to chronic inflammatory diseases and metabolic syndrome. The effect of maternal obesity and metabolic disorders, including gestational diabetes cause Large-for-gestational-age (LGA) children to link future development of adverse health issues such as obesity, atherosclerosis, hypertension, and non-alcoholic fatty liver disease by immune reprogramming to adverse micro-environment. This review also addresses intrauterine environment-driven myeloid reprogramming by epigenetic regulations and the epigenetic markers as an underlying mechanism. This will facilitate future investigations regarding maternal-to-fetal immune regulation and the epigenetic mechanisms of obesity and cardiovascular diseases.
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Affiliation(s)
- Joo Young Kweon
- Medical Science and Engineering, Graduate School of Convergence Science and Technology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Hyeonji Mun
- Medical Science and Engineering, Graduate School of Convergence Science and Technology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Myeong Ryeol Choi
- Medical Science and Engineering, Graduate School of Convergence Science and Technology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Hong Seok Kim
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Yong Joo Ahn
- Medical Science and Engineering, Graduate School of Convergence Science and Technology, Pohang University of Science and Technology, Pohang, Republic of Korea
- Department IT Convergence, Pohang University of Science and Technology, Pohang, Republic of Korea
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Barbosa P, Pinho A, Lázaro A, Rosendo-Silva D, Paula D, Campos J, Tralhão JG, Pereira MJ, Paiva A, Laranjeira P, Carvalho E. CD8 + Treg cells play a role in the obesity-associated insulin resistance. Life Sci 2024; 336:122306. [PMID: 38030055 DOI: 10.1016/j.lfs.2023.122306] [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] [Received: 07/31/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/01/2023]
Abstract
Obesity-related chronic low-grade inflammation may trigger insulin resistance and type 2 diabetes (T2D) development. Cells with regulatory phenotype have been shown to be reduced during obesity, especially CD4+ Treg cells. However, little is known about the CD8+ Treg cells. Therefore, we aim to characterize the CD8+ Treg cells in human peripheral blood and adipose tissue, specifically, to address the effect of obesity and insulin resistance in this regulatory immune cell population. A group of 42 participants with obesity (OB group) were recruited. Fourteen of them were evaluated pre- and post-bariatric surgery. A group of age- and sex-matched healthy volunteers (n = 12) was also recruited (nOB group). CD8+ Treg cell quantification and phenotype were evaluated by flow cytometry, in peripheral blood (PB), subcutaneous (SAT), and visceral adipose tissues (VAT). The OB group displayed a higher percentage of CD8+ Treg cells in PB, compared to the nOB. In addition, they were preferentially polarized into Tc1- and Tc1/17-like CD8+ Treg cells, compared to nOB. Moreover, SAT displayed the highest content of CD8+ Tregs infiltrated, compared to PB or VAT, while CD8+ Tregs infiltrating VAT displayed a higher percentage of cells with Tc1-like phenotype. Participants with pre-diabetes displayed a reduced percentage of TIM-3+CD8+ Tregs in circulation, and PD-1+CD8+ Tregs infiltrated in the VAT. An increase in the percentage of circulating Tc1-like CD8+ Treg cells expressing PD-1 was observed post-surgery. In conclusion, obesity induces significant alterations in CD8+ Treg cells, affecting their percentage and phenotype, as well as the expression of important immune regulatory molecules.
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Affiliation(s)
- Pedro Barbosa
- University of Coimbra, Institute for Interdisciplinary Research, Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), Portugal; Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Casa Costa Alemão, 3030-789 Coimbra, Portugal; Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal
| | - Aryane Pinho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal; Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal; Department of Life Science, University of Coimbra, 3000-456 Coimbra, Portugal
| | - André Lázaro
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal
| | - Daniela Rosendo-Silva
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Diogo Paula
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal
| | - José Campos
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal
| | - José G Tralhão
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra, 3000-075 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal; Institute of Biophysics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Maria J Pereira
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden
| | - Artur Paiva
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal; Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal; Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, 3046-854 Coimbra, Portugal
| | - Paula Laranjeira
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal; Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061 Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548 Coimbra, Portugal; Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, 3000-076 Coimbra, Portugal.
| | - Eugénia Carvalho
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Casa Costa Alemão, 3030-789 Coimbra, Portugal; Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-504 Coimbra, Portugal.
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Arroyo-Jousse V, Borzutzky A, Bono MR, Casanello P. Maternal obesity is associated with a higher number of regulatory-T-cells in newborns without affecting suppression. Am J Reprod Immunol 2023; 89:e13687. [PMID: 36757025 DOI: 10.1111/aji.13687] [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] [Received: 10/11/2022] [Revised: 01/13/2023] [Accepted: 01/28/2023] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Maternal obesity (MO) is associated with a higher risk of immune-mediated diseases in the offspring and higher leptin levels in cord blood (CB). This study evaluates the number and function of lymphocyte subtypes in CB related to MO and its relationship with leptin concentration and leptin receptor expression. METHODS Pregnant women with (n = 32) or without obesity (n = 41) were enrolled at delivery. Cord blood mononuclear cells were separated with Ficoll-Hypaque. B and CD4+, regulatory and effector T cells were quantified by Flow Cytometry. Cord blood leptin concentration was measured by ELISA, and the leptin receptor (sLepR) on Treg cells was determined by Flow Cytometry. RESULTS MO was associated with higher numbers of CD4+, Treg and effector T cells in the CB of their offspring, without differences in the suppressive function of Tregs. Female offspring had a higher number of these cells and a higher cord leptin concentration. Tregs expressed higher levels of sLepR than effector T cells, without differences between groups. CONCLUSIONS MO is associated with changes in the newborn's immune profile, more evident in female newborns with higher leptin concentrations. More studies are needed to identify the mechanisms by which the high levels of cord leptin in the newborn of women with obesity could affect the offspring's immune system.
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Affiliation(s)
| | - Arturo Borzutzky
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María Rosa Bono
- Department of Immunology, Faculty of Science, Universidad de Chile, Santiago, Chile
| | - Paola Casanello
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Obstetrics, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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Sureshchandra S, Doratt BM, Mendza N, Varlamov O, Rincon M, Marshall NE, Messaoudi I. Maternal obesity blunts antimicrobial responses in fetal monocytes. eLife 2023; 12:81320. [PMID: 36645353 PMCID: PMC9894585 DOI: 10.7554/elife.81320] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 01/15/2023] [Indexed: 01/17/2023] Open
Abstract
Maternal pre-pregnancy (pregravid) obesity is associated with adverse outcomes for both mother and offspring. Amongst the complications for the offspring is increased susceptibility and severity of neonatal infections necessitating admission to the intensive care unit, notably bacterial sepsis and enterocolitis. Previous studies have reported aberrant responses to LPS and polyclonal stimulation by umbilical cord blood monocytes that were mediated by alterations in the epigenome. In this study, we show that pregravid obesity dysregulates umbilical cord blood monocyte responses to bacterial and viral pathogens. Specifically, interferon-stimulated gene expression and inflammatory responses to respiratory syncytial virus (RSV) and E. coli were significantly dampened, respectively . Although upstream signaling events were comparable, translocation of the key transcription factor NF-κB and chromatin accessibility at pro-inflammatory gene promoters following TLR stimulation was significantly attenuated. Using a rhesus macaque model of western style diet-induced obesity, we further demonstrate that this defect is detected in fetal peripheral monocytes and tissue-resident macrophages during gestation. Collectively, these data indicate that maternal obesity alters metabolic, signaling, and epigenetic profiles of fetal monocytes leading to a state of immune paralysis during late gestation and at birth.
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Affiliation(s)
- Suhas Sureshchandra
- Institute for Immunology, University of California, IrvineIrvineUnited States
- Department of Molecular Biology and Biochemistry, University of California, IrvineIrvineUnited States
| | - Brianna M Doratt
- Department of Molecular Biology and Biochemistry, University of California, IrvineIrvineUnited States
- Department of Microbiology, Immunology, and Molecular Genetics, University of KentuckyLexingtonUnited States
| | - Norma Mendza
- Department of Molecular Biology and Biochemistry, University of California, IrvineIrvineUnited States
| | - Oleg Varlamov
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science UniversityBeavertonUnited States
| | - Monica Rincon
- Maternal-Fetal Medicine, Oregon Health & Science UniversityPortlandUnited States
| | - Nicole E Marshall
- Maternal-Fetal Medicine, Oregon Health & Science UniversityPortlandUnited States
| | - Ilhem Messaoudi
- Department of Molecular Biology and Biochemistry, University of California, IrvineIrvineUnited States
- Maternal-Fetal Medicine, Oregon Health & Science UniversityPortlandUnited States
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10
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Denizli M, Capitano ML, Kua KL. Maternal obesity and the impact of associated early-life inflammation on long-term health of offspring. Front Cell Infect Microbiol 2022; 12:940937. [PMID: 36189369 PMCID: PMC9523142 DOI: 10.3389/fcimb.2022.940937] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/23/2022] [Indexed: 12/02/2022] Open
Abstract
The prevalence of obesity is increasingly common in the United States, with ~25% of women of reproductive age being overweight or obese. Metaflammation, a chronic low grade inflammatory state caused by altered metabolism, is often present in pregnancies complicated by obesity. As a result, the fetuses of mothers who are obese are exposed to an in-utero environment that has altered nutrients and cytokines. Notably, both human and preclinical studies have shown that children born to mothers with obesity have higher risks of developing chronic illnesses affecting various organ systems. In this review, the authors sought to present the role of cytokines and inflammation during healthy pregnancy and determine how maternal obesity changes the inflammatory landscape of the mother, leading to fetal reprogramming. Next, the negative long-term impact on offspring’s health in numerous disease contexts, including offspring’s risk of developing neuropsychiatric disorders (autism, attention deficit and hyperactive disorder), metabolic diseases (obesity, type 2 diabetes), atopy, and malignancies will be discussed along with the potential of altered immune/inflammatory status in offspring as a contributor of these diseases. Finally, the authors will list critical knowledge gaps in the field of developmental programming of health and diseases in the context of offspring of mothers with obesity, particularly the understudied role of hematopoietic stem and progenitor cells.
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Affiliation(s)
- Merve Denizli
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis IN, United States
| | - Maegan L. Capitano
- Department of Microbiology & Immunology, Indiana University School of Medicine, Indianapolis IN, United States
| | - Kok Lim Kua
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, Indiana University School of Medicine, Indianapolis IN, United States
- *Correspondence: Kok Lim Kua,
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Marley AR, Ryder JR, Turcotte LM, Spector LG. Maternal obesity and acute lymphoblastic leukemia risk in offspring: A summary of trends, epidemiological evidence, and possible biological mechanisms. Leuk Res 2022; 121:106924. [PMID: 35939888 DOI: 10.1016/j.leukres.2022.106924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 10/16/2022]
Abstract
Acute lymphoblastic leukemia, a heterogenous malignancy characterized by uncontrolled proliferation of lymphoid progenitors and generally initiated in utero, is the most common pediatric cancer. Although incidence of ALL has been steadily increasing in recent decades, no clear reason for this trend has been identified. Rising concurrently with ALL incidence, increasing maternal obesity rates may be partially contributing to increasing ALL prevelance. Epidemiological studies, including a recent meta-analysis, have found an association between maternal obesity and leukemogenesis in offspring, although mechanisms underlying this association remain unknown. Therefore, the purpose of this review is to propose possible mechanisms connecting maternal obesity to ALL risk in offspring, including changes to fetal/neonatal epigenetics, altered insulin-like growth factor profiles and insulin resistance, modified adipokine production and secretion, changes to immune cell populations, and impacts on birthweight and childhood obesity/adiposity. We describe how each proposed mechanism is biologically plausible due to their connection with maternal obesity, presence in neonatal and/or fetal tissue, observation in pediatric ALL patients at diagnosis, and association with leukemogenesis, A description of ALL and maternal obesity trends, a summary of epidemiological evidence, a discussion of the pathway from intrauterine environment to subsequent malignancy, and propositions for future directions are also presented.
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Affiliation(s)
- Andrew R Marley
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA.
| | - Justin R Ryder
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Center for Pediatric Obesity Medicine, Department of Pediatrics, University of Minnesota, 2450 Riverside Ave S AO-102, Minneapolis, MN 55454, USA
| | - Lucie M Turcotte
- Division of Hematology/Oncology, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 484, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
| | - Logan G Spector
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
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12
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Sureshchandra S, Marshall NE, Messaoudi I. Impact of pregravid obesity on maternal and fetal immunity: Fertile grounds for reprogramming. J Leukoc Biol 2019; 106:1035-1050. [PMID: 31483523 DOI: 10.1002/jlb.3ri0619-181r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 12/12/2022] Open
Abstract
Maternal pregravid obesity results in several adverse health outcomes during pregnancy, including increased risk of gestational diabetes, preeclampsia, placental abruption, and complications at delivery. Additionally, pregravid obesity and in utero exposure to high fat diet have been shown to have detrimental effects on fetal programming, predisposing the offspring to adverse cardiometabolic, endocrine, and neurodevelopmental outcomes. More recently, a deeper appreciation for the modulation of offspring immunity and infectious disease-related outcomes by maternal pregravid obesity has emerged. This review will describe currently available animal models for studying the impact of maternal pregravid obesity on fetal immunity and review the data from clinical and animal model studies. We also examine the burden of pregravid obesity on the maternal-fetal interface and the link between placental and systemic inflammation. Finally, we discuss future studies needed to identify key mechanistic underpinnings that link maternal inflammatory changes and fetal cellular reprogramming events.
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Affiliation(s)
- Suhas Sureshchandra
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA
| | - Nicole E Marshall
- Maternal-Fetal Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Ilhem Messaoudi
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA
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13
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Yeung EH, Guan W, Mumford SL, Silver RM, Zhang C, Tsai MY, Schisterman EF. Measured maternal prepregnancy anthropometry and newborn DNA methylation. Epigenomics 2019; 11:187-198. [PMID: 30618290 DOI: 10.2217/epi-2018-0099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
AIM We examined maternal prepregnancy anthropometry and cord blood DNA methylation. METHODS Associations between maternal measures (i.e., weight, height, waist circumference, hip circumference, skinfolds, leptin) and methylation β-values at each CpG (measured by the Infinium MethylationEPIC BeadChip) were estimated among 391 singletons. RESULTS Total of 18% of mothers were obese (body mass index ≥ 30) and 27% centrally obese (waist-to-hip ratio ≥ 0.85). One Bonferroni significant CpG with respect to obesity (cg02975187) and two with central obesity (cg12053563, cg12549355) were identified (p < 6 × 10-8). A suggestive association (p < 10-6) was observed at SFRS8 with increasing body mass index. SFRS8 was previously identified with propensity for weight gain in adults. CONCLUSION While associations identified with multiple measures related to maternal adiposity suggest different pathways, methylation differences were small in magnitude.
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Affiliation(s)
- Edwina H Yeung
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health & Human Development, 6710B Rockledge Drive 7004, Bethesda, MD 20817, USA
| | - Weihua Guan
- Division of Biostatistics, School of Public Health, University of Minnesota, A460 Mayo Building, MMC 303, 420 Delaware St SE, Minneapolis, MN 55455, USA
| | - Sunni L Mumford
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health & Human Development, 6710B Rockledge Drive 7004, Bethesda, MD 20817, USA
| | - Robert M Silver
- Department of Obstetrics & Gynecology, University of Utah, 50 North Medical Drive, Room 2B200, Salt Lake City, UT 84103, USA.,Intermountain Healthcare, Salt Lake City, 50 North Medical Drive, Salt Lake City, UT 84132, USA
| | - Cuilin Zhang
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health & Human Development, 6710B Rockledge Drive 7004, Bethesda, MD 20817, USA
| | - Michael Y Tsai
- Department of Laboratory Medicine & Pathology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Enrique F Schisterman
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health & Human Development, 6710B Rockledge Drive 7004, Bethesda, MD 20817, USA
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14
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The impact of donor characteristics on the invariant natural killer T cells of granulocyte-colony-stimulating factor-mobilized marrow grafts and peripheral blood grafts. Transpl Immunol 2018; 48:55-59. [PMID: 29475092 DOI: 10.1016/j.trim.2018.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/19/2018] [Accepted: 02/19/2018] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Invariant natural killer T cells (iNKTs) are a rare but vital subset of immunomodulatory T cells and play an important role in allogeneic hematopoietic stem cell trans-plantation (HSCT). The association of donor characteristics with the number and frequency of the iNKTs subsets in allografts remains poorly understood. In this paper, we prospectively investigate the association of donor characteristics with iNKTs dose and frequency in granulocyte-colony-stimulating factor (G-CSF) mobilized marrow and peripheral blood harvests. MATERIALS AND METHODS 100 bone marrow (BM) units and 100 peripheral blood (PB) units from 100 healthy donors were examined. Parameters including donor age, sex, weight, height, BMI and blood count [including white blood cells (WBCs), lymphocytes and monocytes] at three time points [donor's steady state before G-CSF administration, the day of G-BM harvesting and the day of G-PB apheresis] were analyzed to explore the impact of donor characteristics on iNKTs composition in BM and PB grafts. RESULTS Multivariate analysis showed monocyte counts before G-BM harvest could predict higher frequency of iNKTs in WBC (OR = 2.593, 95%CI: 1.128-5.961, p = 0.025), higher total CD4+ iNKTs dose (OR = 2.250, 95%CI: 1.011-5.008, p = 0.047) and higher total iNKTs dose (OR = 2.662, 95%CI: 1.187-5.970, p = 0.017) in mixture allografts. DISCUSSION The results suggested that monocyte counts pre G-BM harvest could predict the yield of total CD4+ iNKTs and total iNKTs in mixture allografts. The male and older donors were associated with a higher dose of total CD4- iNKTs in mixture allografts.
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15
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Sharp GC, Salas LA, Monnereau C, Allard C, Yousefi P, Everson TM, Bohlin J, Xu Z, Huang RC, Reese SE, Xu CJ, Baïz N, Hoyo C, Agha G, Roy R, Holloway JW, Ghantous A, Merid SK, Bakulski KM, Küpers LK, Zhang H, Richmond RC, Page CM, Duijts L, Lie RT, Melton PE, Vonk JM, Nohr EA, Williams-DeVane C, Huen K, Rifas-Shiman SL, Ruiz-Arenas C, Gonseth S, Rezwan FI, Herceg Z, Ekström S, Croen L, Falahi F, Perron P, Karagas MR, Quraishi BM, Suderman M, Magnus MC, Jaddoe VWV, Taylor JA, Anderson D, Zhao S, Smit HA, Josey MJ, Bradman A, Baccarelli AA, Bustamante M, Håberg SE, Pershagen G, Hertz-Picciotto I, Newschaffer C, Corpeleijn E, Bouchard L, Lawlor DA, Maguire RL, Barcellos LF, Davey Smith G, Eskenazi B, Karmaus W, Marsit CJ, Hivert MF, Snieder H, Fallin MD, Melén E, Munthe-Kaas MC, Arshad H, Wiemels JL, Annesi-Maesano I, Vrijheid M, Oken E, Holland N, Murphy SK, Sørensen TIA, Koppelman GH, Newnham JP, Wilcox AJ, Nystad W, London SJ, Felix JF, Relton CL. Maternal BMI at the start of pregnancy and offspring epigenome-wide DNA methylation: findings from the pregnancy and childhood epigenetics (PACE) consortium. Hum Mol Genet 2017; 26:4067-4085. [PMID: 29016858 PMCID: PMC5656174 DOI: 10.1093/hmg/ddx290] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/23/2017] [Accepted: 07/17/2017] [Indexed: 12/16/2022] Open
Abstract
Pre-pregnancy maternal obesity is associated with adverse offspring outcomes at birth and later in life. Individual studies have shown that epigenetic modifications such as DNA methylation could contribute. Within the Pregnancy and Childhood Epigenetics (PACE) Consortium, we meta-analysed the association between pre-pregnancy maternal BMI and methylation at over 450,000 sites in newborn blood DNA, across 19 cohorts (9,340 mother-newborn pairs). We attempted to infer causality by comparing the effects of maternal versus paternal BMI and incorporating genetic variation. In four additional cohorts (1,817 mother-child pairs), we meta-analysed the association between maternal BMI at the start of pregnancy and blood methylation in adolescents. In newborns, maternal BMI was associated with small (<0.2% per BMI unit (1 kg/m2), P < 1.06 × 10-7) methylation variation at 9,044 sites throughout the genome. Adjustment for estimated cell proportions greatly attenuated the number of significant CpGs to 104, including 86 sites common to the unadjusted model. At 72/86 sites, the direction of the association was the same in newborns and adolescents, suggesting persistence of signals. However, we found evidence for acausal intrauterine effect of maternal BMI on newborn methylation at just 8/86 sites. In conclusion, this well-powered analysis identified robust associations between maternal adiposity and variations in newborn blood DNA methylation, but these small effects may be better explained by genetic or lifestyle factors than a causal intrauterine mechanism. This highlights the need for large-scale collaborative approaches and the application of causal inference techniques in epigenetic epidemiology.
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Affiliation(s)
- Gemma C Sharp
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
- School of Oral and Dental Sciences, University of Bristol, Bristol, UK
| | - Lucas A Salas
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Claire Monnereau
- The Generation R Study Group
- Department of Epidemiology
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Catherine Allard
- Centre de Recherche du Centre Hospitalier, Université de Sherbrooke, QC, Canada
| | - Paul Yousefi
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - Todd M Everson
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Jon Bohlin
- Department of Infection Epidemiology and Modeling, Norwegian Institute of Public Health, Oslo, Norway
| | - Zongli Xu
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Rae-Chi Huang
- Telethon Kids Institute, University of Western Australia, Crawley, WA 6009, Australia
| | - Sarah E Reese
- National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Cheng-Jian Xu
- Department of Pulmonology, GRIAC Research Institute
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Nour Baïz
- Epidemiology of Allergic and Respiratory Diseases Department (EPAR), Sorbonne Université, UPMC Univ Paris 06, INSERM, Pierre Louis Institute of Epidemiology and Public Health, Saint-Antoine Medical School, Paris, France
| | - Cathrine Hoyo
- Department of Biological Sciences
- Center for Human Health and the Environment, North Carolina State University, NC, USA
| | - Golareh Agha
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Ritu Roy
- University of California San Francisco, CA, USA
- HDF Comprehensive Cancer Center, University of California, San Francisco, CA, USA
- Computational Biology Core
| | - John W Holloway
- Human Development & Health, Faculty of Medicine, University of Southampton, UK
| | - Akram Ghantous
- Epigenetics Group, International Agency for Research on Cancer, Lyon, France
| | - Simon K Merid
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, MI, USA
| | - Leanne K Küpers
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Hongmei Zhang
- Division of Epidemiology, Biostatistics, and Environmental Health Sciences, School of Public Health, University of Memphis, Memphis, TN, USA
| | - Rebecca C Richmond
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
| | - Christian M Page
- Department of Non-Communicable Disease, Norwegian Institute of Public Health, Oslo, Norway
| | - Liesbeth Duijts
- The Generation R Study Group
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rolv T Lie
- Department of Global Public Health and Primary Care, University of Bergen, Norway
- Medical Birth Registry of Norway, Norwegian Institute of Public Health, Bergen, Norway
| | - Phillip E Melton
- The Curtin UWA Centre for Genetic Origins of Health and Disease, Faculty of Health Sciences, Curtin University Health Sciences, Curtin University and Faculty of Medicine Dentistry & Health Sciences, The University of Western Australia, Perth, Australia
- Faculty of Medicine Dentistry & Health Sciences, The University of Western Australia, Perth, Australia
| | - Judith M Vonk
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, GRIAC Research Institute Groningen, The Netherlands
| | - Ellen A Nohr
- Research Unit for Gynaecology and Obstetrics, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | | | - Karen Huen
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - Sheryl L Rifas-Shiman
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, USA
| | - Carlos Ruiz-Arenas
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Semira Gonseth
- Department of Epidemiology and Biostatistics, University of California San Francisco, CA, USA
- School of Public Health, University of California Berkeley, CA, USA
| | - Faisal I Rezwan
- Human Development & Health, Faculty of Medicine, University of Southampton, UK
| | - Zdenko Herceg
- Epigenetics Group, International Agency for Research on Cancer, Lyon, France
| | - Sandra Ekström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Lisa Croen
- Division of Research, Kaiser Permanente Northern California, CA, UDA
| | - Fahimeh Falahi
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Patrice Perron
- Centre de Recherche du Centre Hospitalier, Université de Sherbrooke, QC, Canada
- Department of Medicine, Université de Sherbrooke, QC, Canada
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA
| | - Bilal M Quraishi
- Division of Epidemiology, Biostatistics, and Environmental Health Sciences, School of Public Health, University of Memphis, Memphis, TN, USA
| | - Matthew Suderman
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
| | - Maria C Magnus
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
- Department of Non-Communicable Disease, Norwegian Institute of Public Health, Oslo, Norway
| | - Vincent W V Jaddoe
- The Generation R Study Group
- Department of Epidemiology
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jack A Taylor
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
- Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - Denise Anderson
- Telethon Kids Institute, University of Western Australia, Crawley, WA 6009, Australia
| | - Shanshan Zhao
- National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Henriette A Smit
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, The Netherlands
| | - Michele J Josey
- Department of Biological & Biomedical Sciences, North Carolina Central University, Durham, NC, USA
- Epidemiology and Biostatistics Department, University of South Carolina (Columbia), SC, USA
| | - Asa Bradman
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Mariona Bustamante
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Siri E Håberg
- Domain of Mental and Physical Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Irva Hertz-Picciotto
- Department of Public Health, School of Medicine, University of California, Davis, CA, USA
| | - Craig Newschaffer
- AJ Drexel Autism Institute, Drexel University, Philadelphia, PA, USA
| | - Eva Corpeleijn
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Luigi Bouchard
- Department of Biochemistry, Université de Sherbrooke, QC, Canada
- ECOGENE-21 and Lipid Clinic, Chicoutimi Hospital, Saguenay, QC, Canada
| | - Debbie A Lawlor
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
| | - Rachel L Maguire
- Department of Biological Sciences
- Department of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA
| | - Lisa F Barcellos
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - George Davey Smith
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
| | - Brenda Eskenazi
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - Wilfried Karmaus
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Carmen J Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Marie-France Hivert
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, USA
- Department of Medicine, Université de Sherbrooke, QC, Canada
- Diabetes Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M Daniele Fallin
- Department of Mental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
- Sachs’ Children’s Hospital, South General Hospital, Stockholm, Sweden
| | - Monica C Munthe-Kaas
- Department of Pediatric and Adolescent Medicine, Oslo University Hospital, Norway
- Norwegian Institute of Public Health, Oslo Norway
| | - Hasan Arshad
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
- NIHR Respiratory Biomedical Research Unit, University Hospital Southampton, Southampton, UK
- The David Hide Asthma and Allergy Research Centre, Isle of Wight, UK
| | - Joseph L Wiemels
- Department of Epidemiology and Biostatistics, University of California San Francisco, CA, USA
| | - Isabella Annesi-Maesano
- Epidemiology of Allergic and Respiratory Diseases Department (EPAR), Sorbonne Université, UPMC Univ Paris 06, INSERM, Pierre Louis Institute of Epidemiology and Public Health, Saint-Antoine Medical School, Paris, France
| | - Martine Vrijheid
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Emily Oken
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, USA
| | - Nina Holland
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California Berkeley
| | - Susan K Murphy
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Thorkild I A Sørensen
- MRC Integrative Epidemiology Unit
- Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Epidemiology, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark
| | - Gerard H Koppelman
- Department of Paediatric Pulmonology and Paediatric Allergy, University of Groningen, University Medical Center Groningen, Beatrix Children’s Hospital, GRIAC Research Institute, Groningen, the Netherlands
| | - John P Newnham
- School of Women's and Infants' Health, The University of Western Australia, Crawley, WA 6009, Australia
| | - Allen J Wilcox
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Wenche Nystad
- Department of Non-Communicable Disease, Norwegian Institute of Public Health, Oslo, Norway
| | - Stephanie J London
- National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Janine F Felix
- The Generation R Study Group
- Department of Epidemiology
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Caroline L Relton
- MRC Integrative Epidemiology Unit
- School of Social and Community Medicine
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