1
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Connors TJ, Matsumoto R, Verma S, Szabo PA, Guyer R, Gray J, Wang Z, Thapa P, Dogra P, Poon MML, Rybkina K, Bradley MC, Idzikowski E, McNichols J, Kubota M, Pethe K, Shen Y, Atkinson MA, Brusko M, Brusko TM, Yates AJ, Sims PA, Farber DL. Site-specific development and progressive maturation of human tissue-resident memory T cells over infancy and childhood. Immunity 2023; 56:1894-1909.e5. [PMID: 37421943 PMCID: PMC10527943 DOI: 10.1016/j.immuni.2023.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 03/23/2023] [Accepted: 06/13/2023] [Indexed: 07/10/2023]
Abstract
Infancy and childhood are critical life stages for generating immune memory to protect against pathogens; however, the timing, location, and pathways for memory development in humans remain elusive. Here, we investigated T cells in mucosal sites, lymphoid tissues, and blood from 96 pediatric donors aged 0-10 years using phenotypic, functional, and transcriptomic profiling. Our results revealed that memory T cells preferentially localized in the intestines and lungs during infancy and accumulated more rapidly in mucosal sites compared with blood and lymphoid organs, consistent with site-specific antigen exposure. Early life mucosal memory T cells exhibit distinct functional capacities and stem-like transcriptional profiles. In later childhood, they progressively adopt proinflammatory functions and tissue-resident signatures, coincident with increased T cell receptor (TCR) clonal expansion in mucosal and lymphoid sites. Together, our findings identify staged development of memory T cells targeted to tissues during the formative years, informing how we might promote and monitor immunity in children.
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Affiliation(s)
- Thomas J Connors
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Rei Matsumoto
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Surgery, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Shivali Verma
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Peter A Szabo
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Rebecca Guyer
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Joshua Gray
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Zicheng Wang
- Department of Systems Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Puspa Thapa
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Pranay Dogra
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Maya M L Poon
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Ksenia Rybkina
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Marissa C Bradley
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Emma Idzikowski
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - James McNichols
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Masaru Kubota
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Surgery, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Kalpana Pethe
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Yufeng Shen
- Department of Systems Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Mark A Atkinson
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Maigan Brusko
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Todd M Brusko
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Andrew J Yates
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Peter A Sims
- Department of Systems Biology, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Biochemistry and Molecular Biophysics, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Donna L Farber
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Surgery, Columbia University Irving Medical Center, New York, NY 10032, USA.
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Baliu-Piqué M, Tesselaar K, Borghans JAM. Are homeostatic mechanisms aiding the reconstitution of the T-cell pool during lymphopenia in humans? Front Immunol 2022; 13:1059481. [PMID: 36483556 PMCID: PMC9723355 DOI: 10.3389/fimmu.2022.1059481] [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: 10/01/2022] [Accepted: 11/02/2022] [Indexed: 11/23/2022] Open
Abstract
A timely recovery of T-cell numbers following haematopoietic stem-cell transplantation (HSCT) is essential for preventing complications, such as increased risk of infection and disease relapse. In analogy to the occurrence of lymphopenia-induced proliferation in mice, T-cell dynamics in humans are thought to be homeostatically regulated in a cell density-dependent manner. The idea is that T cells divide faster and/or live longer when T-cell numbers are low, thereby helping the reconstitution of the T-cell pool. T-cell reconstitution after HSCT is, however, known to occur notoriously slowly. In fact, the evidence for the existence of homeostatic mechanisms in humans is quite ambiguous, since lymphopenia is often associated with infectious complications and immune activation, which confound the study of homeostatic regulation. This calls into question whether homeostatic mechanisms aid the reconstitution of the T-cell pool during lymphopenia in humans. Here we review the changes in T-cell dynamics in different situations of T-cell deficiency in humans, including the early development of the immune system after birth, healthy ageing, HIV infection, thymectomy and hematopoietic stem cell transplantation (HSCT). We discuss to what extent these changes in T-cell dynamics are a side-effect of increased immune activation during lymphopenia, and to what extent they truly reflect homeostatic mechanisms.
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Affiliation(s)
| | | | - José A. M. Borghans
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
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Rhoades NS, Hendrickson SM, Prongay K, Haertel A, Gill L, Edwards RA, Garzel L, Slifka MK, Messaoudi I. Growth faltering regardless of chronic diarrhea is associated with mucosal immune dysfunction and microbial dysbiosis in the gut lumen. Mucosal Immunol 2021; 14:1113-1126. [PMID: 34158595 PMCID: PMC8379072 DOI: 10.1038/s41385-021-00418-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/13/2021] [Accepted: 05/19/2021] [Indexed: 02/04/2023]
Abstract
Despite the impact of childhood diarrhea on morbidity and mortality, our understanding of its sequelae has been significantly hampered by the lack of studies that examine samples across the entire intestinal tract. Infant rhesus macaques are naturally susceptible to human enteric pathogens and recapitulate the hallmarks of diarrheal disease such as intestinal inflammation and growth faltering. Here, we examined intestinal biopsies, lamina propria leukocytes, luminal contents, and fecal samples from healthy infants and those experiencing growth faltering with distant acute or chronic active diarrhea. We show that growth faltering in the presence or absence of active diarrhea is associated with a heightened systemic and mucosal pro-inflammatory state centered in the colon. Moreover, polyclonal stimulation of colonic lamina propria leukocytes resulted in a dampened cytokine response, indicative of immune exhaustion. We also detected a functional and taxonomic shift in the luminal microbiome across multiple gut sites including the migration of Streptococcus and Prevotella species between the small and large intestine, suggesting a decompartmentalization of gut microbial communities. Our studies provide valuable insight into the outcomes of diarrheal diseases and growth faltering not attainable in humans and lays the groundwork to test interventions in a controlled and reproducible setting.
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Affiliation(s)
- Nicholas S Rhoades
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA
| | - Sara M Hendrickson
- Division of Neuroscience, Oregon National Primate Research Center, Portland, OR, USA
| | - Kamm Prongay
- Division of Comparative Medicine, Oregon National Primate Research Center, Oregon Health and Science University West Campus, Portland, OR, USA
| | - Andrew Haertel
- Division of Comparative Medicine, Oregon National Primate Research Center, Oregon Health and Science University West Campus, Portland, OR, USA
| | - Leanne Gill
- California National Primate Research Center, Davis, Davis, CA, USA
| | - Robert A Edwards
- Department of Pathology and Laboratory Medicine, University of California, Irvine, CA, USA
| | - Laura Garzel
- California National Primate Research Center, Davis, Davis, CA, USA
| | - Mark K Slifka
- Division of Neuroscience, Oregon National Primate Research Center, Portland, OR, USA
| | - Ilhem Messaoudi
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA.
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The Mechanism of PEDV-Carrying CD3 + T Cells Migrate into the Intestinal Mucosa of Neonatal Piglets. Viruses 2021; 13:v13030469. [PMID: 33809123 PMCID: PMC8000367 DOI: 10.3390/v13030469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/03/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) can cause intestinal infection in neonatal piglets through the nasal cavity. A process in which CD3+ T cells carry PEDV plays a key role. However, the modes through which PEDV bridles CD3+ T cells as a vehicle for migration to the intestinal epithelium have not been clarified. In this study, we first demonstrated that PEDV could survive in blood-derived CD3+ T cells for several hours, depending on the multiplicity of infection. In addition, PEDV preferentially survived in CD4+ T cells over CD8+ T cells. Moreover, viral transmission was mediated by cell-to-cell contact between mesenteric lymph-node-derived CD3+ T cells, but did not occur in blood-derived CD3+ T cells. Following an increase in gut-homing integrin α4β7, blood-derived CD3+ T cells carrying PEDV migrated to the intestines via blood circulation and transferred the virus to intestinal epithelial cells through cell-to-cell contact in neonatal piglets. Our findings have significant implications for understanding PEDV pathogenesis in neonatal piglets, which is essential for developing innovative therapies to prevent PEDV infection.
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Saghafian-Hedengren S, Sverremark-Ekström E, Nilsson A. T Cell Subsets During Early Life and Their Implication in the Treatment of Childhood Acute Lymphoblastic Leukemia. Front Immunol 2021; 12:582539. [PMID: 33763058 PMCID: PMC7982872 DOI: 10.3389/fimmu.2021.582539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 02/01/2021] [Indexed: 11/13/2022] Open
Abstract
The immune system plays a major role in recognizing and eliminating malignant cells, and this has been exploited in the development of immunotherapies aimed at either activating or reactivating the anti-tumor activity of a patient's immune system. A wide range of therapeutic approaches involving T lymphocytes, such as programmed cell death protein ligand-1 (PDL-1) inhibitors, cytotoxic T-lymphocyte-associated protein-4 (CTLA-4) blockers, and CD19-targeted T-cell therapy through chimeric antigen receptor (CAR)-T cells or CD19/CD3 bi-specific T-cell engagers, have been introduced to the field of oncology, leading to significant improvements in overall survival of adult cancer patients. During the past few years, the availability and approval of T-cell based immunotherapies have become a reality also for the treatment of childhood cancers. However, the distribution, ratio of regulatory to effector cells and the quality of T-cell responses early in life are distinct from those during adolescence and adulthood, raising the possibility that these differences impact the efficacy of immunotherapy. Herein we provide a brief overview of the properties of conventional T cell subsets during early life. Focusing on the most common cancer type during childhood, acute lymphoblastic leukemia (ALL), we describe how current conventional therapies used against ALL influence the T-cell compartment of small children. We describe early life T-cell responses in relation to immunotherapies engaging T-cell anticancer reactivity and present our opinion that it is not only immaturity of the adaptive immune system, but also the impact of an immunosuppressive environment that may prove disadvantageous in the setting of immunotherapies targeting pediatric cancer cells.
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Affiliation(s)
- Shanie Saghafian-Hedengren
- Division of Paediatric Oncology and Paediatric Surgery, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Eva Sverremark-Ekström
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Anna Nilsson
- Division of Paediatric Oncology and Paediatric Surgery, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
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Yuan C, Jin Y, Li Y, Zhang E, Zhang P, Yang Q. PEDV infection in neonatal piglets through the nasal cavity is mediated by subepithelial CD3 + T cells. Vet Res 2021; 52:26. [PMID: 33597007 PMCID: PMC7888150 DOI: 10.1186/s13567-020-00883-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/16/2020] [Indexed: 01/18/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) primarily infects neonatal piglets causing catastrophic effects on the global pig farming industry. PEDV infects piglets through the nasal cavity, a process in which dendritic cells (DCs) play an important role. However, neonatal piglets have fewer nasal DCs. This study found that subepithelial CD3+ T cells mediated PEDV invasion through the nasal cavity in neonatal piglets. PEDV could replicate in the nasal epithelial cells (NECs) isolated from the nasal cavity of neonatal piglets. Infection of NECs with PEDV could induce antiviral and inflammatory cytokines at the late stage. The infected NECs mediated transfer of virus to CD3+ T cells distributed in the subepithelial of the nasal cavity via cell-to-cell contact. The infected CD3+ T cells could migrate to the intestine via blood circulation, causing intestinal infection in neonatal piglets. Thus, the findings of this study indicate the importance of CD3+T cells in the dissemination of PEDV from the nasal cavity to the intestinal mucosa in neonatal piglets.
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Affiliation(s)
- Chen Yuan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China
| | - Yuxin Jin
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China
| | - Yuchen Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China
| | - En Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China
| | - Penghao Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China
| | - Qian Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, Jiangsu, 210095, China.
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7
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Wang A, Chao T, Ji Z, Xuan R, Liu S, Guo M, Wang G, Wang J. Transcriptome analysis reveals potential immune function-related regulatory genes/pathways of female Lubo goat submandibular glands at different developmental stages. PeerJ 2020; 8:e9947. [PMID: 33083113 PMCID: PMC7547598 DOI: 10.7717/peerj.9947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 08/25/2020] [Indexed: 01/03/2023] Open
Abstract
Background The submandibular glands, as major salivary glands, participate in rumen digestion in goats. Sialic acid, lysozyme, immunoglobulin A (IgA), lactoferrin and other biologically active substances secreted in the submandibular glands were reported in succession, which suggests that the submandibular gland may have immune functions in addition to participating in digestion. The aim of this study was to map the expression profile of differentially expressed genes (DEGs) at three different stages by transcriptome sequencing, screen immune-related genes and pathways by bioinformatics methods, and predict the immune function of submandibular glands at different developmental stages. Methods Nine submandibular gland tissue samples were collected from groups of 1-month-old kids, 12-month-old adolescent goats and 24-month-old adult goats (3 samples from each group), and high-throughput transcriptome sequencing was conducted on these samples. The DEGs among the three stages were screened and analysed. Key genes and signalling pathways were selected via protein-protein interaction (PPI) network analysis. Results The results revealed 2,706, 2,525 and 52 DEGs between 1-month-old and 12-month-old goats, between 1-month-old and 24-month-old goats, and between 12-month-old and 24-month-old goats, respectively. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses indicated that most of the DEGs were enriched in immune- related GO terms and pathways. Based on functional enrichment analysis and network analysis, 10 genes (PTPRC, CD28, SELL, LCP2, MYC, LCK, ZAP70, ITGB2, SYK and CCR7), two signalling pathways (the T cell receptor signalling pathway and the NF-κβ signalling pathway) and eight GO terms (T cell receptor signalling pathway, neutrophil mediated immunity, B cell mediated immunity, regulation of alpha-beta T cell activation, positive regulation of T cell proliferation, regulation of leukocyte differentiation, positive regulation of antigen receptor-mediated signalling pathway, positive regulation of lymphocyte proliferation) that may play key roles in the immune functions of the goat submandibular glands at different developmental stages were identified. Moreover, we found that eight antibacterial peptide-encoding genes were downregulated in the tuberculosis and salivary secretion pathways, while all immunoglobulins were upregulated in 10 immune system pathways. These findings indicate that the submandibular glands may be important immunological organs during the growth process of goats and that the immune function of these glands gradually weakens with age up to 12 months but remains relatively stable after 12 months of age. Overall, this study will improve our understanding of transcriptional regulation related to goat submandibular gland immune function.
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Affiliation(s)
- Aili Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Tianle Chao
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Zhibin Ji
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Rong Xuan
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Shuang Liu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Maosen Guo
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Guizhi Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
| | - Jianmin Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, P.R. China
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Sakwinska O, Bosco N. Host Microbe Interactions in the Lactating Mammary Gland. Front Microbiol 2019; 10:1863. [PMID: 31456777 PMCID: PMC6701204 DOI: 10.3389/fmicb.2019.01863] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 07/29/2019] [Indexed: 12/13/2022] Open
Abstract
The bacteria present in human milk constitute the human milk microbiome (hMM). Both the older culture-based work and the more recent studies using molecular detection of bacterial DNA have reached similar conclusions: the hMM mostly consists of commensal staphylococci such as Staphylococcus epidermidis, and streptococci. The prevalence of other bacterial groups such lactobacilli varies widely, while the abundance and prevalence of bifidobacteria is generally low. Recently, the hMM became accepted as a part of a physiologically normal state with suggested potential health benefits. Most research on the hMM has focused on its composition and potential effect on the breastfed infant. A major role as a microbiome inoculum for the infant gut has been proposed, but remains to be clearly demonstrated. Herein, we also discuss the emerging connection between the hMM and mammary gland physiology and lactation. Similarities between the mammary gland and mucosal interfaces are considerable, and in particular mucosal-like immune attributes of mammary gland. The potential role of hMM-host interactions in the mammary gland in maternal health is explored with a primary focus on lactational mastitis.
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Affiliation(s)
- Olga Sakwinska
- Nestlé Research, Nestlé Institute of Health Sciences, Lausanne, Switzerland
| | - Nabil Bosco
- Nestlé Research, Nestlé Institute of Health Sciences, Lausanne, Switzerland
- Nestlé Research Singapore Hub, Singapore, Singapore
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Baliu-Piqué M, Kurniawan H, Ravesloot L, Verheij MW, Drylewicz J, Lievaart-Peterson K, Borghans JAM, Koets A, Tesselaar K. Age-related distribution and dynamics of T-cells in blood and lymphoid tissues of goats. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 93:1-10. [PMID: 30550777 DOI: 10.1016/j.dci.2018.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/10/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
Neonatal mammals have increased disease susceptibility and sub-optimal vaccine responses. This raises problems in both humans and farm animals. The high prevalence of paratuberculosis in goats and the lack of an effective vaccine against it have a strong impact on the dairy sector, and calls for vaccines optimized for the neonatal immune system. We characterized the composition of the T-cell pool in neonatal kids and adult goats and quantified their turnover rates using in vivo deuterium labelling. From birth to adulthood, CD4+ T-cells were the predominant subset in the thymus and lymph nodes, while spleen and bone marrow contained mainly CD8+ lymphocytes. In blood, CD4+ T-cells were the predominant subset during the neonatal period, while CD8+ T-cells predominated in adults. We observed that thymic mass and cellularity increased during the first 5 months after birth, but decreased later in life. Deuterium labelling revealed that T-cell turnover rates in neonatal kids are considerably higher than in adult animals.
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Affiliation(s)
- Mariona Baliu-Piqué
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Henry Kurniawan
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Lars Ravesloot
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, the Netherlands; Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Myrddin W Verheij
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Julia Drylewicz
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | | | - José A M Borghans
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Ad Koets
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, the Netherlands; Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Kiki Tesselaar
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands.
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Marie C, Ali A, Chandwe K, Petri WA, Kelly P. Pathophysiology of environmental enteric dysfunction and its impact on oral vaccine efficacy. Mucosal Immunol 2018; 11:1290-1298. [PMID: 29988114 DOI: 10.1038/s41385-018-0036-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/03/2018] [Accepted: 04/11/2018] [Indexed: 02/08/2023]
Abstract
Environmental enteric dysfunction (EED) refers to a subclinical disorder of intestinal function common in tropical countries and in settings of poverty and economic disadvantage. The enteropathy that underlies this syndrome is characterized by mucosal inflammation and villus blunting mediated by T cell activation. Epithelial cell disruption and microbial translocation drive systemic inflammation. EED in young children is associated geographically with growth failure, malnutrition, and greatly impaired responses to oral vaccines, notably rotavirus and poliovirus vaccines. In this review, we describe the pathophysiology of EED and examine the evidence linking EED and oral vaccine failure. This evidence is far from conclusive. Although our understanding of EED is still sketchy, there is limited evidence of disturbed innate immunity, B cell disturbances including aggregation into lymphoid follicles, and autoantibody generation. Pathways of T cell activation and the possibility of dendritic cell anergy, which could help explain oral vaccine failure, require further work.
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Affiliation(s)
- Chelsea Marie
- The University of Virginia, Charlottesville, VA, USA
| | - Asad Ali
- Department of Pediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Kanta Chandwe
- Tropical Gastroenterology and Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia
| | | | - Paul Kelly
- Tropical Gastroenterology and Nutrition group, University of Zambia School of Medicine, Lusaka, Zambia. .,Barts & The London School of Medicine, Queen Mary University of London, London, E1 4AT, UK.
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11
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Connors TJ, Baird JS, Yopes MC, Zens KD, Pethe K, Ravindranath TM, Ho SH, Farber DL. Developmental Regulation of Effector and Resident Memory T Cell Generation during Pediatric Viral Respiratory Tract Infection. THE JOURNAL OF IMMUNOLOGY 2018; 201:432-439. [PMID: 29848753 DOI: 10.4049/jimmunol.1800396] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/08/2018] [Indexed: 01/07/2023]
Abstract
Viral respiratory tract infections (VRTI) remain a leading cause of morbidity and mortality among infants and young children. In mice, optimal protection to VRTI is mediated by recruitment of effector T cells to the lungs and respiratory tract, and subsequent establishment of tissue resident memory T cells (Trm), which provide long-term protection. These critical processes of T cell recruitment to the respiratory tract, their role in disease pathogenesis, and establishment of local protective immunity remain undefined in pediatric VRTI. In this study, we investigated T cell responses in the upper respiratory tract (URT) and lower respiratory tract (LRT) of infants and young children with VRTI, revealing developmental regulation of T cell differentiation and Trm generation in situ. We show a direct concurrence between T cell responses in the URT and LRT, including a preponderance of effector CD8+ T cells that was associated with disease severity. During infant VRTI, there was an accumulation of terminally differentiated effector cells (effector memory RA+ T cells) in the URT and LRT with reduced Trm in the early neonatal period, and decreased effector memory RA+ T cell and increased Trm formation with age during the early years of childhood. Moreover, human infant T cells exhibit increased expression of the transcription factor T-bet compared with adult T cells, suggesting a mechanism for preferential generation of effector over Trm. The developmental regulation of respiratory T cell responses as revealed in the present study is important for diagnosing, monitoring, and treating VRTI in the critical early life stages.
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Affiliation(s)
- Thomas J Connors
- Department of Pediatrics, Columbia University Medical Center, New York, NY 10032.,Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032
| | - J Scott Baird
- Department of Pediatrics, Columbia University Medical Center, New York, NY 10032
| | - Margot C Yopes
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032
| | - Kyra D Zens
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032
| | - Kalpana Pethe
- Department of Pediatrics, Columbia University Medical Center, New York, NY 10032
| | | | - Siu-Hong Ho
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032
| | - Donna L Farber
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032; .,Department of Surgery, Columbia University Medical Center, New York, NY 10032; and.,Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY 10032
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12
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Kollmann TR, Marchant A. Immunity and immunopathology in early human life. Semin Immunopathol 2017; 39:575-576. [PMID: 29170801 DOI: 10.1007/s00281-017-0657-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 10/09/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Tobias R Kollmann
- Division of Infectious Diseases, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada.
| | - Arnaud Marchant
- Institute for Medical Immunology, Université libre de Bruxelles, Charleroi, Belgium
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