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Gao Y, Wang K, Lin Z, Cai S, Peng A, He L, Qi H, Jin Z, Qian X. The emerging roles of microbiome and short-chain fatty acids in the pathogenesis of bronchopulmonary dysplasia. Front Cell Infect Microbiol 2024; 14:1434687. [PMID: 39372498 PMCID: PMC11449852 DOI: 10.3389/fcimb.2024.1434687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Accepted: 08/28/2024] [Indexed: 10/08/2024] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic lung disease that affects premature infants and leads to long-term pulmonary complications. The pathogenesis of BPD has not been fully elucidated yet. In recent years, the microbiome and its metabolites, especially short-chain fatty acids (SCFAs), in the gut and lungs have been demonstrated to be involved in the development and progression of the disease. This review aims to summarize the current knowledge on the potential involvement of the microbiome and SCFAs, especially the latter, in the development and progression of BPD. First, we introduce the gut-lung axis, the production and functions of SCFAs, and the role of SCFAs in lung health and diseases. We then discuss the evidence supporting the involvement of the microbiome and SCFAs in BPD. Finally, we elaborate on the potential mechanisms of the microbiome and SCFAs in BPD, including immune modulation, epigenetic regulation, enhancement of barrier function, and modulation of surfactant production and the gut microbiome. This review could advance our understanding of the microbiome and SCFAs in the pathogenesis of BPD, which also helps identify new therapeutic targets and facilitate new drug development.
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Affiliation(s)
- Yuan Gao
- Neonatal Intensive Care Unit (NICU), Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Kaixuan Wang
- Department of Pediatrics, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Zupan Lin
- Neonatal Intensive Care Unit (NICU), Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Shujing Cai
- Neonatal Intensive Care Unit (NICU), Jinhua Maternal and Child Health Care Hospital, Jinhua, China
| | - Aohui Peng
- College of Life Sciences, Zhejiang Normal University, Jinhua, China
| | - Le He
- Department of Pediatrics, Jinhua Hospital of TCM Affiliated to Zhejiang University of Traditional Chinese Medicine, Jinhua, China
| | - Hui Qi
- China National Clinical Research Center of Respiratory Diseases, Respiratory Department, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing, China
| | - Zhigang Jin
- College of Life Sciences, Zhejiang Normal University, Jinhua, China
| | - Xubo Qian
- Department of Pediatrics, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
- Department of Pediatrics, Jinhua Hospital of TCM Affiliated to Zhejiang University of Traditional Chinese Medicine, Jinhua, China
- Central Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
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2
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Ngo C, Garrec C, Tomasello E, Dalod M. The role of plasmacytoid dendritic cells (pDCs) in immunity during viral infections and beyond. Cell Mol Immunol 2024; 21:1008-1035. [PMID: 38777879 PMCID: PMC11364676 DOI: 10.1038/s41423-024-01167-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/10/2024] [Indexed: 05/25/2024] Open
Abstract
Type I and III interferons (IFNs) are essential for antiviral immunity and act through two different but complimentary pathways. First, IFNs activate intracellular antimicrobial programs by triggering the upregulation of a broad repertoire of viral restriction factors. Second, IFNs activate innate and adaptive immunity. Dysregulation of IFN production can lead to severe immune system dysfunction. It is thus crucial to identify and characterize the cellular sources of IFNs, their effects, and their regulation to promote their beneficial effects and limit their detrimental effects, which can depend on the nature of the infected or diseased tissues, as we will discuss. Plasmacytoid dendritic cells (pDCs) can produce large amounts of all IFN subtypes during viral infection. pDCs are resistant to infection by many different viruses, thus inhibiting the immune evasion mechanisms of viruses that target IFN production or their downstream responses. Therefore, pDCs are considered essential for the control of viral infections and the establishment of protective immunity. A thorough bibliographical survey showed that, in most viral infections, despite being major IFN producers, pDCs are actually dispensable for host resistance, which is achieved by multiple IFN sources depending on the tissue. Moreover, primary innate and adaptive antiviral immune responses are only transiently affected in the absence of pDCs. More surprisingly, pDCs and their IFNs can be detrimental in some viral infections or autoimmune diseases. This makes the conservation of pDCs during vertebrate evolution an enigma and thus raises outstanding questions about their role not only in viral infections but also in other diseases and under physiological conditions.
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Affiliation(s)
- Clémence Ngo
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Clémence Garrec
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Elena Tomasello
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
| | - Marc Dalod
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
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3
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Özçam M, Lynch SV. The gut-airway microbiome axis in health and respiratory diseases. Nat Rev Microbiol 2024; 22:492-506. [PMID: 38778224 DOI: 10.1038/s41579-024-01048-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 05/25/2024]
Abstract
Communication between the gut and remote organs, such as the brain or the cardiovascular system, has been well established and recent studies provide evidence for a potential bidirectional gut-airway axis. Observations from animal and human studies indicate that respiratory insults influence the activity of the gut microbiome and that microbial ligands and metabolic products generated by the gut microbiome shape respiratory immunity. Information exchange between these two large mucosal surface areas regulates microorganism-immune interactions, with significant implications for the clinical and treatment outcomes of a range of respiratory conditions, including asthma, chronic obstructive pulmonary disease and lung cancer. In this Review, we summarize the most recent data in this field, offering insights into mechanisms of gut-airway crosstalk across spatial and temporal gradients and their relevance for respiratory health.
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Affiliation(s)
- Mustafa Özçam
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Susan V Lynch
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
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4
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Ross FC, Patangia D, Grimaud G, Lavelle A, Dempsey EM, Ross RP, Stanton C. The interplay between diet and the gut microbiome: implications for health and disease. Nat Rev Microbiol 2024:10.1038/s41579-024-01068-4. [PMID: 39009882 DOI: 10.1038/s41579-024-01068-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2024] [Indexed: 07/17/2024]
Abstract
Diet has a pivotal role in shaping the composition, function and diversity of the gut microbiome, with various diets having a profound impact on the stability, functionality and diversity of the microbial community within our gut. Understanding the profound impact of varied diets on the microbiome is crucial, as it will enable us not only to make well-informed dietary decisions for better metabolic and intestinal health, but also to prevent and slow the onset of specific diet-related diseases that stem from suboptimal diets. In this Review, we explore how geographical location affects the gut microbiome and how different diets shape its composition and function. We examine the mechanisms by which whole dietary regimes, such as the Mediterranean diet, high-fibre diet, plant-based diet, high-protein diet, ketogenic diet and Western diet, influence the gut microbiome. Furthermore, we underscore the need for exhaustive studies to better understand the causal relationship between diet, host and microorganisms for the development of precision nutrition and microbiome-based therapies.
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Affiliation(s)
- Fiona C Ross
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
| | - Dhrati Patangia
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Teagasc Moorepark Food Research Centre, Cork, Ireland
| | - Ghjuvan Grimaud
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Teagasc Moorepark Food Research Centre, Cork, Ireland
| | - Aonghus Lavelle
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Eugene M Dempsey
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
- INFANT Centre, University College Cork, Cork, Ireland
| | - R Paul Ross
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Catherine Stanton
- APC Microbiome Ireland, University College Cork, Cork, Ireland.
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.
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5
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Labeur-Iurman L, Harker JA. Mechanisms of antibody mediated immunity - Distinct in early life. Int J Biochem Cell Biol 2024; 172:106588. [PMID: 38768890 DOI: 10.1016/j.biocel.2024.106588] [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: 11/17/2023] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/22/2024]
Abstract
Immune responses in early life are characterized by a failure to robustly generate long-lasting protective responses against many common pathogens or upon vaccination. This is associated with a reduced ability to generate T-cell dependent high affinity antibodies. This review highlights the differences in T-cell dependent antibody responses observed between infants and adults, in particular focussing on the alterations in immune cell function that lead to reduced T follicular helper cell-B cell crosstalk within germinal centres in early life. Understanding the distinct functional characteristics of early life humoral immunity, and how these are regulated, will be critical in guiding age-appropriate immunological interventions in the very young.
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Affiliation(s)
- Lucia Labeur-Iurman
- National Heart & Lung Institute, Imperial College London, London, United Kingdom.
| | - James A Harker
- National Heart & Lung Institute, Imperial College London, London, United Kingdom; Centre for Paediatrics and Child Health, Imperial College London, London, United Kingdom.
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6
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Korkmaz FT, Quinton LJ. Extra-pulmonary control of respiratory defense. Cell Immunol 2024; 401-402:104841. [PMID: 38878619 DOI: 10.1016/j.cellimm.2024.104841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 06/06/2024] [Indexed: 07/13/2024]
Abstract
Pneumonia persists as a public health crisis, representing the leading cause of death due to infection. Whether respiratory tract infections progress to pneumonia and its sequelae such as acute respiratory distress syndrome and sepsis depends on numerous underlying conditions related to both the causative agent and host. Regarding the former, pneumonia burden remains staggeringly high, despite the effectiveness of pathogen-targeting strategies such as vaccines and antibiotics. This demands a greater understanding of host features that collaborate to promote immune resistance and tissue resilience in the infected lung. Such features inside the pulmonary compartment have drawn much attention, where major advances have been made related to resident and recruited immune activity. By comparison, extra-pulmonary processes guiding pneumonia susceptibility are relatively elusive, constituting the focus of this review. Here we will highlight examples of when, how, and why tissues outside of the lungs dispatch signals that modulate local immunity in the airspaces. Topics include the liver, gut, bone marrow, brain and more, all of which contribute in direct and indirect ways to pneumonia outcome. When tuned appropriately, it has become clear that these responses can serve protective roles, and this will be considered distinctly from what would otherwise be aberrant responses characteristic of pneumonia-induced organ injury and sepsis. Further advances in this area may reveal novel targetable areas for clinical intervention that are not confined to the intra-pulmonary space.
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Affiliation(s)
- Filiz T Korkmaz
- Department of Medicine, Division of Immunology and Infectious Disease, UMass Chan Medical School, Worcester, MA 01602, United States.
| | - Lee J Quinton
- Department of Medicine, Division of Immunology and Infectious Disease, UMass Chan Medical School, Worcester, MA 01602, United States
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7
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Sebina I, Ngo S, Rashid RB, Alorro M, Namubiru P, Howard D, Ahmed T, Phipps S. CXCR3 + effector regulatory T cells associate with disease tolerance during lower respiratory pneumovirus infection. Immunology 2024; 172:500-515. [PMID: 38584001 DOI: 10.1111/imm.13790] [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: 12/21/2023] [Accepted: 03/28/2024] [Indexed: 04/09/2024] Open
Abstract
Lifestyle factors like poor maternal diet or antibiotic exposure disrupt early life microbiome assembly in infants, increasing the risk of severe lower respiratory infections (sLRI). Our prior studies in mice indicated that a maternal low-fibre diet (LFD) exacerbates LRI severity in infants by impairing recruitment of plasmacytoid dendritic cells (pDC) and consequently attenuating expansion of lung regulatory T (Treg) cells during pneumonia virus of mice (PVM) infection. Here, we investigated whether maternal dietary fibre intake influences Treg cell phenotypes in the mediastinal lymph nodes (mLN) and lungs of PVM-infected neonatal mice. Using high dimensional flow cytometry, we identified distinct clusters of regulatory T cells (Treg cells), which differed between lungs and mLN during infection, with notably greater effector Treg cell accumulation in the lungs. Compared to high-fibre diet (HFD)-reared pups, frequencies of various effector Treg cell subsets were decreased in the lungs of LFD-reared pups. Particularly, recruitment of chemokine receptor 3 (CXCR3+) expressing Treg cells was attenuated in LFD-reared pups, correlating with lower lung expression of CXCL9 and CXCL10 chemokines. The recruitment of this subset in response to PVM infection was similarly impaired in pDC depleted mice or following anti-CXCR3 treatment, increasing immunopathology in the lungs. In summary, PVM infection leads to the sequential recruitment and expansion of distinct Treg cell subsets to the lungs and mLN. The attenuated recruitment of the CXCR3+ subset in LFD-reared pups increases LRI severity, suggesting that strategies to enhance pDCs or CXCL9/CXCL10 expression will lower immune-mediated pathogenesis.
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Affiliation(s)
- Ismail Sebina
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Sylvia Ngo
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Ridwan B Rashid
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Mariah Alorro
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Patricia Namubiru
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Daniel Howard
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Tufael Ahmed
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Simon Phipps
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Queensland, Australia
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8
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Ignacio A, Czyz S, McCoy KD. Early life microbiome influences on development of the mucosal innate immune system. Semin Immunol 2024; 73:101885. [PMID: 38788491 DOI: 10.1016/j.smim.2024.101885] [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] [Received: 05/02/2023] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
The gut microbiota is well known to possess immunomodulatory capacities, influencing a multitude of cellular signalling pathways to maintain host homeostasis. Although the formation of the immune system initiates before birth in a sterile environment, an emerging body of literature indicates that the neonatal immune system is influenced by a first wave of external stimuli that includes signals from the maternal microbiota. A second wave of stimulus begins after birth and must be tightly regulated during the neonatal period when colonization of the host occurs concomitantly with the maturation of the immune system, requiring a fine adjustment between establishing tolerance towards the commensal microbiota and preserving inflammatory responses against pathogenic invaders. Besides integrating cues from commensal microbes, the neonatal immune system must also regulate responses triggered by other environmental signals, such as dietary antigens, which become more complex with the introduction of solid food during the weaning period. This "window of opportunity" in early life is thought to be crucial for the proper development of the immune system, setting the tone of subsequent immune responses in adulthood and modulating the risk of developing chronic and metabolic inflammatory diseases. Here we review the importance of host-microbiota interactions for the development and maturation of the immune system, particularly in the early-life period, highlighting the known mechanisms involved in such communication. This discussion is focused on recent data demonstrating microbiota-mediated education of innate immune cells and its role in the development of lymphoid tissues.
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Affiliation(s)
- Aline Ignacio
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Sonia Czyz
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Kathy D McCoy
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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9
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Xue L, Sun J, Sun Y, Wang Y, Zhang K, Fan M, Qian H, Li Y, Wang L. Maternal Brown Rice Diet during Pregnancy Promotes Adipose Tissue Browning in Offspring via Reprogramming PKA Signaling and DNA Methylation. Mol Nutr Food Res 2024:e2300861. [PMID: 38566521 DOI: 10.1002/mnfr.202300861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/23/2024] [Indexed: 04/04/2024]
Abstract
SCOPE Brown rice, the most consumed food worldwide, has been shown to possess beneficial effects on the prevention of metabolic diseases. However, the way in which maternal brown rice diet improves metabolism in offspring and the regulatory mechanisms remains unclear. The study explores the epigenetic regulation of offspring energy metabolic homeostasis by maternal brown rice diet during pregnancy. METHODS AND RESULTS Female mice are fed brown rice during pregnancy, and then body phenotypes, the histopathological analysis, and adipose tissues biochemistry assay of offspring mice are detected. It is found that maternal brown rice diet significantly reduces body weight and fat mass, increases energy expenditure and heat production in offspring. Maternal brown rice diet increases uncoupling protein 1 (UCP1) protein level and upregulates the mRNA expression of thermogenic genes in adipose tissues. Mechanistically, protein kinase A (PKA) signaling is likely responsible in the induced thermogenic program in offspring adipocytes, and the progeny adipocytes browning program is altered due to decreased level of DNA methyltransferase 1 protein and hypomethylation of the transcriptional coregulator positive regulatory domain containing 16 (PRDM16). CONCLUSIONS These findings demonstrate that maternal brown rice during pregnancy improves offspring mice metabolic homeostasis via promoting adipose browning, and its mechanisms may be mediated by DNA methylation reprogramming.
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Affiliation(s)
- Lamei Xue
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Juan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yujie Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yu Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Kuiliang Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Mingcong Fan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Haifeng Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yan Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Li Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
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10
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Bokor S, Csölle I, Felső R, Vass RA, Funke S, Ertl T, Molnár D. Dietary nutrients during gestation cause obesity and related metabolic changes by altering DNA methylation in the offspring. Front Endocrinol (Lausanne) 2024; 15:1287255. [PMID: 38449848 PMCID: PMC10916691 DOI: 10.3389/fendo.2024.1287255] [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: 09/01/2023] [Accepted: 02/01/2024] [Indexed: 03/08/2024] Open
Abstract
Growing evidence shows that maternal nutrition from preconception until lactation has an important effect on the development of non-communicable diseases in the offspring. Biological responses to environmental stress during pregnancy, including undernutrition or overnutrition of various nutrients, are transmitted in part by DNA methylation. The aim of the present narrative review is to summarize literature data on altered DNA methylation patterns caused by maternal macronutrient or vitamin intake and its association with offspring's phenotype (obesity and related metabolic changes). With our literature search, we found evidence for the association between alterations in DNA methylation pattern of different genes caused by maternal under- or overnutrition of several nutrients (protein, fructose, fat, vitamin D, methyl-group donor nutrients) during 3 critical periods of programming (preconception, pregnancy, lactation) and the development of obesity or related metabolic changes (glucose, insulin, lipid, leptin, adiponectin levels, blood pressure, non-alcoholic fatty liver disease) in offspring. The review highlights that maternal consumption of several nutrients could individually affect the development of offspring's obesity and related metabolic changes via alterations in DNA methylation.
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Affiliation(s)
- Szilvia Bokor
- Department of Paediatrics, Medical School, University of Pécs, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
| | - Ildikó Csölle
- Department of Paediatrics, Medical School, University of Pécs, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Doctoral School of Health Sciences, Faculty of Health Sciences, University of Pécs, Pécs, Hungary
| | - Regina Felső
- Department of Paediatrics, Medical School, University of Pécs, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
| | - Réka A. Vass
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, Medical School, University of Pécs, Pécs, Hungary
- Obstetrics and Gynecology, Magyar Imre Hospital Ajka, Ajka, Hungary
| | - Simone Funke
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, Medical School, University of Pécs, Pécs, Hungary
| | - Tibor Ertl
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, Medical School, University of Pécs, Pécs, Hungary
| | - Dénes Molnár
- Department of Paediatrics, Medical School, University of Pécs, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
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11
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Oh DS, Kim E, Lu G, Normand R, Shook LL, Lyall A, Jasset O, Demidkin S, Gilbert E, Kim J, Akinwunmi B, Tantivit J, Tirard A, Arnold BY, Slowikowski K, Goldberg MB, Filbin MR, Hacohen N, Nguyen LH, Chan AT, Yu XG, Li JZ, Yonker L, Fasano A, Perlis RH, Pasternak O, Gray KJ, Choi GB, Drew DA, Sen P, Villani AC, Edlow AG, Huh JR. SARS-CoV-2 infection elucidates unique features of pregnancy-specific immunity. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.02.05.24301794. [PMID: 38370801 PMCID: PMC10871456 DOI: 10.1101/2024.02.05.24301794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Pregnancy is a risk factor for increased severity of SARS-CoV-2 and other respiratory infections. The mechanisms underlying this risk have not been well-established, partly due to a limited understanding of how pregnancy shapes immune responses. To gain insight into the role of pregnancy in modulating immune responses at steady state and upon perturbation, we collected peripheral blood mononuclear cells (PBMC), plasma, and stool from 226 women, including 152 pregnant individuals (n = 96 with SARS-CoV-2 infection and n = 56 healthy controls) and 74 non-pregnant women (n = 55 with SARS-CoV-2 and n = 19 healthy controls). We found that SARS-CoV-2 infection was associated with altered T cell responses in pregnant compared to non-pregnant women. Differences included a lower percentage of memory T cells, a distinct clonal expansion of CD4-expressing CD8 + T cells, and the enhanced expression of T cell exhaustion markers, such as programmed cell death-1 (PD-1) and T cell immunoglobulin and mucin domain-3 (Tim-3), in pregnant women. We identified additional evidence of immune dysfunction in severely and critically ill pregnant women, including a lack of expected elevation in regulatory T cell (Treg) levels, diminished interferon responses, and profound suppression of monocyte function. Consistent with earlier data, we found maternal obesity was also associated with altered immune responses to SARS-CoV-2 infection, including enhanced production of inflammatory cytokines by T cells. Certain gut bacterial species were altered in pregnancy and upon SARS-CoV-2 infection in pregnant individuals compared to non-pregnant women. Shifts in cytokine and chemokine levels were also identified in the sera of pregnant individuals, most notably a robust increase of interleukin-27 (IL-27), a cytokine known to drive T cell exhaustion, in the pregnant uninfected control group compared to all non-pregnant groups. IL-27 levels were also significantly higher in uninfected pregnant controls compared to pregnant SARS-CoV-2-infected individuals. Using two different preclinical mouse models of inflammation-induced fetal demise and respiratory influenza viral infection, we found that enhanced IL-27 protects developing fetuses from maternal inflammation but renders adult female mice vulnerable to viral infection. These combined findings from human and murine studies reveal nuanced pregnancy-associated immune responses, suggesting mechanisms underlying the increased susceptibility of pregnant individuals to viral respiratory infections.
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12
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Atto B, Anteneh Y, Bialasiewicz S, Binks MJ, Hashemi M, Hill J, Thornton RB, Westaway J, Marsh RL. The Respiratory Microbiome in Paediatric Chronic Wet Cough: What Is Known and Future Directions. J Clin Med 2023; 13:171. [PMID: 38202177 PMCID: PMC10779485 DOI: 10.3390/jcm13010171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/13/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
Chronic wet cough for longer than 4 weeks is a hallmark of chronic suppurative lung diseases (CSLD), including protracted bacterial bronchitis (PBB), and bronchiectasis in children. Severe lower respiratory infection early in life is a major risk factor of PBB and paediatric bronchiectasis. In these conditions, failure to clear an underlying endobronchial infection is hypothesised to drive ongoing inflammation and progressive tissue damage that culminates in irreversible bronchiectasis. Historically, the microbiology of paediatric chronic wet cough has been defined by culture-based studies focused on the detection and eradication of specific bacterial pathogens. Various 'omics technologies now allow for a more nuanced investigation of respiratory pathobiology and are enabling development of endotype-based models of care. Recent years have seen substantial advances in defining respiratory endotypes among adults with CSLD; however, less is understood about diseases affecting children. In this review, we explore the current understanding of the airway microbiome among children with chronic wet cough related to the PBB-bronchiectasis diagnostic continuum. We explore concepts emerging from the gut-lung axis and multi-omic studies that are expected to influence PBB and bronchiectasis endotyping efforts. We also consider how our evolving understanding of the airway microbiome is translating to new approaches in chronic wet cough diagnostics and treatments.
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Affiliation(s)
- Brianna Atto
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Yitayal Anteneh
- Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT 0811, Australia; (Y.A.); (M.J.B.); (J.W.)
| | - Seweryn Bialasiewicz
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia;
| | - Michael J. Binks
- Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT 0811, Australia; (Y.A.); (M.J.B.); (J.W.)
- SAHMRI Women and Kids, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Mostafa Hashemi
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada; (M.H.); (J.H.)
| | - Jane Hill
- Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada; (M.H.); (J.H.)
- Spire Health Technology, PBC, Seattle, WA 98195, USA
| | - Ruth B. Thornton
- Centre for Child Health Research, University of Western Australia, Perth, WA 6009, Australia;
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, WA 6009, Australia
| | - Jacob Westaway
- Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT 0811, Australia; (Y.A.); (M.J.B.); (J.W.)
- Centre for Tropical Bioinformatics and Molecular Biology, James Cook University, Cairns, QLD 4811, Australia
| | - Robyn L. Marsh
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
- Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT 0811, Australia; (Y.A.); (M.J.B.); (J.W.)
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13
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Moniruzzaman M, Rahman MA, Wang R, Wong KY, Chen ACH, Mueller A, Taylor S, Harding A, Illankoon T, Wiid P, Sajiir H, Schreiber V, Burr LD, McGuckin MA, Phipps S, Hasnain SZ. Interleukin-22 suppresses major histocompatibility complex II in mucosal epithelial cells. J Exp Med 2023; 220:e20230106. [PMID: 37695525 PMCID: PMC10494524 DOI: 10.1084/jem.20230106] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/22/2023] [Accepted: 08/18/2023] [Indexed: 09/12/2023] Open
Abstract
Major histocompatibility complex (MHC) II is dynamically expressed on mucosal epithelial cells and is induced in response to inflammation and parasitic infections, upon exposure to microbiota, and is increased in chronic inflammatory diseases. However, the regulation of epithelial cell-specific MHC II during homeostasis is yet to be explored. We discovered a novel role for IL-22 in suppressing epithelial cell MHC II partially via the regulation of endoplasmic reticulum (ER) stress, using animals lacking the interleukin-22-receptor (IL-22RA1), primary human and murine intestinal and respiratory organoids, and murine models of respiratory virus infection or with intestinal epithelial cell defects. IL-22 directly downregulated interferon-γ-induced MHC II on primary epithelial cells by modulating the expression of MHC II antigen A α (H2-Aα) and Class II transactivator (Ciita), a master regulator of MHC II gene expression. IL-22RA1-knockouts have significantly higher MHC II expression on mucosal epithelial cells. Thus, while IL-22-based therapeutics improve pathology in chronic disease, their use may increase susceptibility to viral infections.
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Affiliation(s)
- Md Moniruzzaman
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - M. Arifur Rahman
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Ran Wang
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Kuan Yau Wong
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Alice C.-H. Chen
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Alexandra Mueller
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Steven Taylor
- South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Alexa Harding
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Thishan Illankoon
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Percival Wiid
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Haressh Sajiir
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Veronika Schreiber
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
| | - Lucy D. Burr
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
- Department of Respiratory and Sleep Medicine, Mater Health, South Brisbane, Australia
| | - Michael A. McGuckin
- Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Australia
| | - Simon Phipps
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia
- Respiratory Immunology Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia
| | - Sumaira Z. Hasnain
- Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Immunopathology Group, Translational Research Institute, Mater Research Institute—The University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, Australia
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14
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Duan J, Matute JD, Blumberg RS. IL-22: Immunity's bittersweet symphony. J Exp Med 2023; 220:e20231210. [PMID: 37695524 PMCID: PMC10494382 DOI: 10.1084/jem.20231210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
Epithelial cells play a crucial role in barrier defense. Here, Moniruzzaman et al. (2023. J. Exp. Med.https://doi.org/10.1084/jem.20230106) discovered that interleukin-22 (IL-22) represses MHC class II expression by epithelial cells with an opposite impact on chronic inflammatory disease and viral infection.
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Affiliation(s)
- Jinzhi Duan
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Juan D Matute
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Division of Neonatology and Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard S Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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15
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Guo C, Chi H. Immunometabolism of dendritic cells in health and disease. Adv Immunol 2023; 160:83-116. [PMID: 38042587 PMCID: PMC11086980 DOI: 10.1016/bs.ai.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2023]
Abstract
Dendritic cells (DCs) are crucial mediators that bridge the innate and adaptive immune responses. Cellular rewiring of metabolism is an emerging regulator of the activation, migration, and functional specialization of DC subsets in specific microenvironments and immunological conditions. DCs undergo metabolic adaptation to exert immunogenic or tolerogenic effects in different contexts. Also, beyond their intracellular metabolic and signaling roles, metabolites and nutrients mediate the intercellular crosstalk between DCs and other cell types, and such crosstalk orchestrates DC function and immune responses. Here, we provide a comprehensive review of the metabolic regulation of DC biology in various contexts and summarize the current understanding of such regulation in directing immune homeostasis and inflammation, specifically with respect to infections, autoimmunity, tolerance, cancer, metabolic diseases, and crosstalk with gut microbes. Understanding context-specific metabolic alterations in DCs may identify mechanisms for physiological and pathological functions of DCs and yield potential opportunities for therapeutic targeting of DC metabolism in many diseases.
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Affiliation(s)
- Chuansheng Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States.
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16
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Curren B, Ahmed T, Howard DR, Ashik Ullah M, Sebina I, Rashid RB, Al Amin Sikder M, Namubiru P, Bissell A, Ngo S, Jackson DJ, Toussaint M, Edwards MR, Johnston SL, McSorley HJ, Phipps S. IL-33-induced neutrophilic inflammation and NETosis underlie rhinovirus-triggered exacerbations of asthma. Mucosal Immunol 2023; 16:671-684. [PMID: 37506849 DOI: 10.1016/j.mucimm.2023.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 06/04/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023]
Abstract
Rhinovirus-induced neutrophil extracellular traps (NETs) contribute to acute asthma exacerbations; however, the molecular factors that trigger NETosis in this context remain ill-defined. Here, we sought to implicate a role for IL-33, an epithelial cell-derived alarmin rapidly released in response to infection. In mice with chronic experimental asthma (CEA), but not naïve controls, rhinovirus inoculation induced an early (1 day post infection; dpi) inflammatory response dominated by neutrophils, neutrophil-associated cytokines (IL-1α, IL-1β, CXCL1), and NETosis, followed by a later, type-2 inflammatory phase (3-7 dpi), characterised by eosinophils, elevated IL-4 levels, and goblet cell hyperplasia. Notably, both phases were ablated by HpARI (Heligmosomoides polygyrus Alarmin Release Inhibitor), which blocks IL-33 release and signalling. Instillation of exogenous IL-33 recapitulated the rhinovirus-induced early phase, including the increased presence of NETs in the airway mucosa, in a PAD4-dependent manner. Ex vivo IL-33-stimulated neutrophils from mice with CEA, but not naïve mice, underwent NETosis and produced greater amounts of IL-1α/β, IL-4, and IL-5. In nasal samples from rhinovirus-infected people with asthma, but not healthy controls, IL-33 levels correlated with neutrophil elastase and dsDNA. Our findings suggest that IL-33 blockade ameliorates the severity of an asthma exacerbation by attenuating neutrophil recruitment and the downstream generation of NETs.
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Affiliation(s)
- Bodie Curren
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia
| | - Tufael Ahmed
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, Queensland University of Technology, Queensland 4000, Australia
| | - Daniel R Howard
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia
| | - Md Ashik Ullah
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia
| | - Ismail Sebina
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia; School of Biomedical Sciences, Queensland University of Technology, Queensland 4000, Australia
| | - Ridwan B Rashid
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia
| | - Md Al Amin Sikder
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia
| | - Patricia Namubiru
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia
| | - Alec Bissell
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia
| | - Sylvia Ngo
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia
| | - David J Jackson
- School of Immunology & Microbial Sciences, King's College London, London, UK; National Heart and Lung Institute, Imperial College London, London, UK
| | - Marie Toussaint
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Michael R Edwards
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Henry J McSorley
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee, UK
| | - Simon Phipps
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia; School of Biomedical Sciences, The University of Queensland, Queensland 4072, Australia; School of Biomedical Sciences, Queensland University of Technology, Queensland 4000, Australia; Australian Infectious Diseases Research Centre, The University of Queensland, 4072 Queensland, Australia.
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17
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Rice TA, Konnikova L. Propionate primes the DC pump in neonates. Immunity 2023; 56:903-905. [PMID: 37163990 DOI: 10.1016/j.immuni.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 05/12/2023]
Abstract
The protective benefits of breastmilk are well-appreciated, yet lack mechanistic detail. In this issue of Immunity, Sikder et al. reveal how breastmilk-microbiota-derived propionate induces Flt3L expression, dendritic cell maturation, regulatory T cell recruitment, and antiviral immunity in the lung.
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Affiliation(s)
- Tyler A Rice
- Department of Pediatrics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Liza Konnikova
- Department of Pediatrics, Yale School of Medicine, New Haven, CT 06510, USA; Department of Obstetrics, Gynecology and Reproductive Science, Yale School of Medicine, New Haven, CT 06510, USA; Program of Translational Biomedicine, Yale School of Medicine, New Haven, CT 06510, USA; Program of Human and Translational Immunology, Yale School of Medicine, New Haven, CT 06510, USA.
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