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Gray JI, Farber DL. γδ T cells: The first line of defense for neonates. J Exp Med 2024; 221:e20240628. [PMID: 38819378 PMCID: PMC11143380 DOI: 10.1084/jem.20240628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024] Open
Abstract
A distinct CD83-expressing subset of γδ T cells are enriched in preterm infants with sepsis, providing insights into their functional maturation dynamics in settings of homeostasis and disease (León-Lara et al. https://doi.org/10.1084/jem.20231987).
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Affiliation(s)
- Joshua I. Gray
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, USA
| | - Donna L. Farber
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, USA
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2
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Eddens T, Parks OB, Zhang Y, Manni ML, Casanova JL, Ogishi M, Williams JV. PD-1 signaling in neonates restrains CD8 + T cell function and protects against respiratory viral immunopathology. Mucosal Immunol 2024; 17:476-490. [PMID: 38176655 DOI: 10.1016/j.mucimm.2023.12.004] [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] [Received: 10/13/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024]
Abstract
Respiratory viral infections, including human metapneumovirus (HMPV), remain a leading cause of morbidity and mortality in neonates and infants. However, the mechanisms behind the increased sensitivity to those respiratory viral infections in neonates are poorly understood. Neonates, unlike adults, have several anti-inflammatory mechanisms in the lung, including elevated baseline expression of programmed death ligand 1 (PD-L1), a ligand for the inhibitory receptor programmed cell death protein 1 (PD-1). We thus hypothesized that neonates would rely on PD-1:PD-L1 signaling to restrain antiviral CD8 responses. To test this, we developed a neonatal primary HMPV infection model using wild-type C57BL/6 (B6) and Pdcd1-/- (lacking PD-1) mice. HMPV-infected neonatal mice had increased PD-L1/PD-L2 co-expression on innate immune cells but a similar number of antigen-specific CD8+ T cells and upregulation of PD-1 to that of adult B6 mice. Neonatal CD8+ T cells had reduced interferon-gamma (IFN-γ), granzyme B, and interleukin-2 production compared with B6 adults. Pdcd1-/- neonatal CD8+ T cells had markedly increased production of IFN-γ and granzyme B compared with B6 neonates. Pdcd1-/- neonates had increased acute pathology with HMPV or influenza. Pdcd1-/- neonates infected with HMPV had long-term changes in pulmonary physiology with evidence of immunopathology and a persistent CD8+ T-cell response with increased granzyme B production. Using single-cell ribonucleic acid sequencing from a child lacking PD-1 signaling, a similar activated CD8+ T-cell signature with increased granzyme B expression was observed. These data indicate that PD-1 signaling critically limits CD8+ T-cell effector functions and prevents immunopathology in response to neonatal respiratory viral infections.
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Affiliation(s)
- Taylor Eddens
- Division of Allergy and Immunology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA; University of Pittsburgh School of Medicine, Department of Pediatrics, Pittsburgh, Pennsylvania, USA
| | - Olivia B Parks
- University of Pittsburgh Medical Scientist Training Program, Pittsburgh, Pennsylvania, USA
| | - Yu Zhang
- Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, Pennsylvania, USA
| | - Michelle L Manni
- Division of Pulmonary Medicine, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Necker Hospital for Sick Children, Paris, France; University Paris Cité, Imagine Institute, Paris, France; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, New York, USA; Howard Hughes Medical Institute, New York, New York, USA; Department of Pediatrics, Necker Hospital for Sick Children, Paris, France
| | - Masato Ogishi
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, New York, USA
| | - John V Williams
- University of Pittsburgh School of Medicine, Department of Pediatrics, Pittsburgh, Pennsylvania, USA; Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, Pennsylvania, USA.
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3
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Stevens J, Culberson E, Kinder J, Ramiriqui A, Gray J, Bonfield M, Shao TY, Al Gharabieh F, Peterson L, Steinmeyer S, Zacharias W, Pryhuber G, Paul O, Sengupta S, Alenghat T, Way SS, Deshmukh H. Microbiota-derived inosine programs protective CD8 + T cell responses against influenza in newborns. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.09.588427. [PMID: 38645130 PMCID: PMC11030415 DOI: 10.1101/2024.04.09.588427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
The immunological defects causing susceptibility to severe viral respiratory infections due to early-life dysbiosis remain ill-defined. Here, we show that influenza virus susceptibility in dysbiotic infant mice is caused by CD8+ T cell hyporesponsiveness and diminished persistence as tissue-resident memory cells. We describe a previously unknown role for nuclear factor interleukin 3 (NFIL3) in repression of memory differentiation of CD8+ T cells in dysbiotic mice involving epigenetic regulation of T cell factor 1 (TCF 1) expression. Pulmonary CD8+ T cells from dysbiotic human infants share these transcriptional signatures and functional phenotypes. Mechanistically, intestinal inosine was reduced in dysbiotic human infants and newborn mice, and inosine replacement reversed epigenetic dysregulation of Tcf7 and increased memory differentiation and responsiveness of pulmonary CD8+ T cells. Our data unveils new developmental layers controlling immune cell activation and identifies microbial metabolites that may be used therapeutically in the future to protect at-risk newborns.
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Affiliation(s)
- Joseph Stevens
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
- Medical Scientist Training Program, University of Cincinnati College of Medicine
- Immunology Graduate Program, Cincinnati Children’s Hospital Medical Center
| | - Erica Culberson
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
- Medical Scientist Training Program, University of Cincinnati College of Medicine
- Immunology Graduate Program, Cincinnati Children’s Hospital Medical Center
| | - Jeremy Kinder
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Infectious Disease, Cincinnati Children’s Hospital Medical Center
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center
| | - Alicia Ramiriqui
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
| | - Jerilyn Gray
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
| | - Madeline Bonfield
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
- Immunology Graduate Program, Cincinnati Children’s Hospital Medical Center
| | - Tzu-Yu Shao
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Infectious Disease, Cincinnati Children’s Hospital Medical Center
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center
| | - Faris Al Gharabieh
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
| | - Laura Peterson
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
| | - Shelby Steinmeyer
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
| | - William Zacharias
- Department of Pediatrics, University of Cincinnati College of Medicine
- Medical Scientist Training Program, University of Cincinnati College of Medicine
| | - Gloria Pryhuber
- Department of Pediatrics, University of Rochester, School of Medicine
| | - Oindrila Paul
- Division of Neonatology, Children’s Hospital of Philadelphia; Perelman School of Medicine, University of Pennsylvania
| | - Shaon Sengupta
- Division of Neonatology, Children’s Hospital of Philadelphia; Perelman School of Medicine, University of Pennsylvania
| | - Theresa Alenghat
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center
| | - Sing Sing Way
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Infectious Disease, Cincinnati Children’s Hospital Medical Center
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center
| | - Hitesh Deshmukh
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Neonatology, Cincinnati Children’s Hospital Medical Center
- Division of Immunobiology, Cincinnati Children’s Hospital Medical Center
- Center for Inflammation and Tolerance, Cincinnati Children’s Hospital Medical Center
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4
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Borghesi A. Life-threatening infections in human newborns: Reconciling age-specific vulnerability and interindividual variability. Cell Immunol 2024; 397-398:104807. [PMID: 38232634 DOI: 10.1016/j.cellimm.2024.104807] [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: 10/29/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
In humans, the interindividual variability of clinical outcome following exposure to a microorganism is immense, ranging from silent infection to life-threatening disease. Age-specific immune responses partially account for the high incidence of infection during the first 28 days of life and the related high mortality at population level. However, the occurrence of life-threatening disease in individual newborns remains unexplained. By contrast, inborn errors of immunity and their immune phenocopies are increasingly being discovered in children and adults with life-threatening viral, bacterial, mycobacterial and fungal infections. There is a need for convergence between the fields of neonatal immunology, with its in-depth population-wide characterization of newborn-specific immune responses, and clinical immunology, with its investigations of infections in patients at the cellular and molecular levels, to facilitate identification of the mechanisms of susceptibility to infection in individual newborns and the design of novel preventive and therapeutic strategies.
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Affiliation(s)
- Alessandro Borghesi
- Neonatal Intensive Care Unit, San Matteo Research Hospital, Pavia, EU, Italy; School of Life Sciences, Swiss Federal Institute of Technology, Lausanne, Switzerland.
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5
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Bhattacharya S, Myers JA, Baker C, Guo M, Danopoulos S, Myers JR, Bandyopadhyay G, Romas ST, Huyck HL, Misra RS, Dutra J, Holden-Wiltse J, McDavid AN, Ashton JM, Al Alam D, Potter SS, Whitsett JA, Xu Y, Pryhuber GS, Mariani TJ. Single-Cell Transcriptomic Profiling Identifies Molecular Phenotypes of Newborn Human Lung Cells. Genes (Basel) 2024; 15:298. [PMID: 38540357 PMCID: PMC10970229 DOI: 10.3390/genes15030298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 05/01/2024] Open
Abstract
While animal model studies have extensively defined the mechanisms controlling cell diversity in the developing mammalian lung, there exists a significant knowledge gap with regards to late-stage human lung development. The NHLBI Molecular Atlas of Lung Development Program (LungMAP) seeks to fill this gap by creating a structural, cellular and molecular atlas of the human and mouse lung. Transcriptomic profiling at the single-cell level created a cellular atlas of newborn human lungs. Frozen single-cell isolates obtained from two newborn human lungs from the LungMAP Human Tissue Core Biorepository, were captured, and library preparation was completed on the Chromium 10X system. Data was analyzed in Seurat, and cellular annotation was performed using the ToppGene functional analysis tool. Transcriptional interrogation of 5500 newborn human lung cells identified distinct clusters representing multiple populations of epithelial, endothelial, fibroblasts, pericytes, smooth muscle, immune cells and their gene signatures. Computational integration of data from newborn human cells and with 32,000 cells from postnatal days 1 through 10 mouse lungs generated by the LungMAP Cincinnati Research Center facilitated the identification of distinct cellular lineages among all the major cell types. Integration of the newborn human and mouse cellular transcriptomes also demonstrated cell type-specific differences in maturation states of newborn human lung cells. Specifically, newborn human lung matrix fibroblasts could be separated into those representative of younger cells (n = 393), or older cells (n = 158). Cells with each molecular profile were spatially resolved within newborn human lung tissue. This is the first comprehensive molecular map of the cellular landscape of neonatal human lung, including biomarkers for cells at distinct states of maturity.
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Affiliation(s)
- Soumyaroop Bhattacharya
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Jacquelyn A. Myers
- Genomic Research Center, University of Rochester Medical Center, Rochester, NY 14642, USA; (J.A.M.); (C.B.); (J.R.M.); (J.M.A.)
| | - Cameron Baker
- Genomic Research Center, University of Rochester Medical Center, Rochester, NY 14642, USA; (J.A.M.); (C.B.); (J.R.M.); (J.M.A.)
| | - Minzhe Guo
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45219, USA; (M.G.); (S.S.P.); (J.A.W.); (Y.X.)
| | - Soula Danopoulos
- Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, University of California Los Angeles, Los Angeles, CA 90024, USA; (S.D.)
| | - Jason R. Myers
- Genomic Research Center, University of Rochester Medical Center, Rochester, NY 14642, USA; (J.A.M.); (C.B.); (J.R.M.); (J.M.A.)
| | - Gautam Bandyopadhyay
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Stephen T. Romas
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Heidie L. Huyck
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Ravi S. Misra
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Jennifer Dutra
- Clinical & Translational Science Institute, University of Rochester, Rochester, NY 14642, USA; (J.D.); (J.H.-W.)
| | - Jeanne Holden-Wiltse
- Clinical & Translational Science Institute, University of Rochester, Rochester, NY 14642, USA; (J.D.); (J.H.-W.)
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY 14642, USA;
| | - Andrew N. McDavid
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY 14642, USA;
| | - John M. Ashton
- Genomic Research Center, University of Rochester Medical Center, Rochester, NY 14642, USA; (J.A.M.); (C.B.); (J.R.M.); (J.M.A.)
| | - Denise Al Alam
- Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, University of California Los Angeles, Los Angeles, CA 90024, USA; (S.D.)
| | - S. Steven Potter
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45219, USA; (M.G.); (S.S.P.); (J.A.W.); (Y.X.)
| | - Jeffrey A. Whitsett
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45219, USA; (M.G.); (S.S.P.); (J.A.W.); (Y.X.)
| | - Yan Xu
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45219, USA; (M.G.); (S.S.P.); (J.A.W.); (Y.X.)
| | - Gloria S. Pryhuber
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
| | - Thomas J. Mariani
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA; (G.B.); (S.T.R.); (H.L.H.); (R.S.M.); (G.S.P.); (T.J.M.)
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6
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Watson NB, Patel RK, Kean C, Veazey J, Oyesola OO, Laniewski N, Grenier JK, Wang J, Tabilas C, Yee Mon KJ, McNairn AJ, Peng SA, Wesnak SP, Nzingha K, Davenport MP, Tait Wojno ED, Scheible KM, Smith NL, Grimson A, Rudd BD. The gene regulatory basis of bystander activation in CD8 + T cells. Sci Immunol 2024; 9:eadf8776. [PMID: 38394230 DOI: 10.1126/sciimmunol.adf8776] [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: 11/18/2022] [Accepted: 01/26/2024] [Indexed: 02/25/2024]
Abstract
CD8+ T cells are classically recognized as adaptive lymphocytes based on their ability to recognize specific foreign antigens and mount memory responses. However, recent studies indicate that some antigen-inexperienced CD8+ T cells can respond to innate cytokines alone in the absence of cognate T cell receptor stimulation, a phenomenon referred to as bystander activation. Here, we demonstrate that neonatal CD8+ T cells undergo a robust and diverse program of bystander activation, which corresponds to enhanced innate-like protection against unrelated pathogens. Using a multi-omics approach, we found that the ability of neonatal CD8+ T cells to respond to innate cytokines derives from their capacity to undergo rapid chromatin remodeling, resulting in the usage of a distinct set of enhancers and transcription factors typically found in innate-like T cells. We observed that the switch between innate and adaptive functions in the CD8+ T cell compartment is mediated by changes in the abundance of distinct subsets of cells. The innate CD8+ T cell subset that predominates in early life was also present in adult mice and humans. Our findings provide support for the layered immune hypothesis and indicate that the CD8+ T cell compartment is more functionally diverse than previously thought.
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Affiliation(s)
- Neva B Watson
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Ravi K Patel
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Connor Kean
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Janelle Veazey
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Oyebola O Oyesola
- Department of Immunology, University of Washington, Seattle, WA 98109, USA
| | - Nathan Laniewski
- David H. Smith Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Jennifer K Grenier
- Genomics Innovation Hub and TREx Facility, Institute of Biotechnology, Cornell University, Ithaca, NY 14853, USA
| | - Jocelyn Wang
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Cybelle Tabilas
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Kristel J Yee Mon
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Adrian J McNairn
- Genomics Innovation Hub and TREx Facility, Institute of Biotechnology, Cornell University, Ithaca, NY 14853, USA
| | - Seth A Peng
- Department of Clinical Science, Cornell University, Ithaca, NY 14853, USA
| | - Samantha P Wesnak
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Kito Nzingha
- Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Miles P Davenport
- Kirby Institute for Infection and Immunity, UNSW Australia, Sydney, NSW 2052, Australia
| | - Elia D Tait Wojno
- Department of Immunology, University of Washington, Seattle, WA 98109, USA
| | - Kristin M Scheible
- Department of Pediatrics, University of Rochester, Rochester, NY 14642, USA
| | - Norah L Smith
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Andrew Grimson
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Brian D Rudd
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
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7
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Liu J, Joseph S, Manohar K, Lee J, Brokaw JP, Shelley WC, Markel TA. Role of innate T cells in necrotizing enterocolitis. Front Immunol 2024; 15:1357483. [PMID: 38390341 PMCID: PMC10881895 DOI: 10.3389/fimmu.2024.1357483] [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: 12/18/2023] [Accepted: 01/16/2024] [Indexed: 02/24/2024] Open
Abstract
Necrotizing enterocolitis (NEC) is a destructive gastrointestinal disease primarily affecting preterm babies. Despite advancements in neonatal care, NEC remains a significant cause of morbidity and mortality in neonatal intensive care units worldwide and the etiology of NEC is still unclear. Risk factors for NEC include prematurity, very low birth weight, feeding with formula, intestinal dysbiosis and bacterial infection. A review of the literature would suggest that supplementation of prebiotics and probiotics prevents NEC by altering the immune responses. Innate T cells, a highly conserved subpopulation of T cells that responds quickly to stimulation, develops differently from conventional T cells in neonates. This review aims to provide a succinct overview of innate T cells in neonates, encompassing their phenotypic characteristics, functional roles, likely involvement in the pathogenesis of NEC, and potential therapeutic implications.
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Affiliation(s)
- Jianyun Liu
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Sharon Joseph
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Krishna Manohar
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Jasmine Lee
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - John P. Brokaw
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - W. Christopher Shelley
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
- Riley Hospital for Children at Indiana University Health, Indianapolis, IN, United States
| | - Troy A. Markel
- Department of Surgery, Section of Pediatric Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
- Riley Hospital for Children at Indiana University Health, Indianapolis, IN, United States
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8
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Jamaleddine H, Rogers D, Perreault G, Postat J, Patel D, Mandl JN, Khadra A. Chronic infection control relies on T cells with lower foreign antigen binding strength generated by N-nucleotide diversity. PLoS Biol 2024; 22:e3002465. [PMID: 38300945 PMCID: PMC10833529 DOI: 10.1371/journal.pbio.3002465] [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] [Received: 01/30/2023] [Accepted: 12/08/2023] [Indexed: 02/03/2024] Open
Abstract
The breadth of pathogens to which T cells can respond is determined by the T cell receptors (TCRs) present in an individual's repertoire. Although more than 90% of the sequence diversity among TCRs is generated by terminal deoxynucleotidyl transferase (TdT)-mediated N-nucleotide addition during V(D)J recombination, the benefit of TdT-altered TCRs remains unclear. Here, we computationally and experimentally investigated whether TCRs with higher N-nucleotide diversity via TdT make distinct contributions to acute or chronic pathogen control specifically through the inclusion of TCRs with lower antigen binding strengths (i.e., lower reactivity to peptide-major histocompatibility complex (pMHC)). When T cells with high pMHC reactivity have a greater propensity to become functionally exhausted than those of low pMHC reactivity, our computational model predicts a shift toward T cells with low pMHC reactivity over time during chronic, but not acute, infections. This TCR-affinity shift is critical, as the elimination of T cells with lower pMHC reactivity in silico substantially increased the time to clear a chronic infection, while acute infection control remained largely unchanged. Corroborating an affinity-centric benefit for TCR diversification via TdT, we found evidence that TdT-deficient TCR repertoires possess fewer T cells with weaker pMHC binding strengths in vivo and showed that TdT-deficient mice infected with a chronic, but not an acute, viral pathogen led to protracted viral clearance. In contrast, in the case of a chronic fungal pathogen where T cells fail to clear the infection, both our computational model and experimental data showed that TdT-diversified TCR repertoires conferred no additional protection to the hosts. Taken together, our in silico and in vivo data suggest that TdT-mediated TCR diversity is of particular benefit for the eventual resolution of prolonged pathogen replication through the inclusion of TCRs with lower foreign antigen binding strengths.
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Affiliation(s)
| | - Dakota Rogers
- Department of Physiology, McGill University, Montreal, Quebec, Canada
- McGill University Research Centre on Complex Traits, Montreal, Quebec, Canada
| | - Geneviève Perreault
- McGill University Research Centre on Complex Traits, Montreal, Quebec, Canada
| | - Jérémy Postat
- Department of Physiology, McGill University, Montreal, Quebec, Canada
- McGill University Research Centre on Complex Traits, Montreal, Quebec, Canada
| | - Dhanesh Patel
- Department of Physiology, McGill University, Montreal, Quebec, Canada
- McGill University Research Centre on Complex Traits, Montreal, Quebec, Canada
| | - Judith N. Mandl
- Department of Physiology, McGill University, Montreal, Quebec, Canada
- McGill University Research Centre on Complex Traits, Montreal, Quebec, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
| | - Anmar Khadra
- Department of Physiology, McGill University, Montreal, Quebec, Canada
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9
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Monaco MH, Wang M, Hauser J, Yan J, Dilger RN, Donovan SM. Formula supplementation with human and bovine milk oligosaccharides modulates blood IgG and T-helper cell populations, and ex vivo LPS-stimulated cytokine production in a neonatal preclinical model. Front Immunol 2023; 14:1327853. [PMID: 38179055 PMCID: PMC10765566 DOI: 10.3389/fimmu.2023.1327853] [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: 10/25/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024] Open
Abstract
Introduction Human milk contains structurally diverse oligosaccharides (HMO), which are multifunctional modulators of neonatal immune development. Our objective was to investigate formula supplemented with fucosylated (2'FL) + neutral (lacto-N-neotetraose, LNnt) oligosaccharides and/or sialylated bovine milk oligosaccharides (BMOS) on immunological outcomes. Methods Pigs (n=46) were randomized at 48h of age to four diets: sow milk replacer formula (CON), BMOS (CON + 6.5 g/L BMOS), HMO (CON + 1.0 g/L 2'FL + 0.5 g/L LNnT), or BMOS+HMO (CON + 6.5 g/L BMOS + 1.0 g/L 2'FL + 0.5 g/L LNnT). Blood and tissues were collected on postnatal day 33 for measurement of cytokines and IgG, phenotypic identification of immune cells, and ex vivo lipopolysaccharide (LPS)-stimulation of immune cells. Results Serum IgG was significantly lower in the HMO group than BMOS+HMO but did not differ from CON or BMOS. The percentage of PBMC T-helper cells was lower in BMOS+HMO than the other groups. Splenocytes from the BMOS group secreted more IL-1β when stimulated ex vivo with LPS compared to CON or HMO groups. For PBMCs, a statistical interaction of BMOS*HMO was observed for IL-10 secretion (p=0.037), with BMOS+HMO and HMO groups differing at p=0.1. Discussion The addition of a mix of fucosylated and sialylated oligosaccharides to infant formula provides specific activities in the immune system that differ from formulations supplemented with one oligosaccharide structure.
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Affiliation(s)
- Marcia H. Monaco
- Department of Food Science and Human Nutrition, University of Illinois at Urbana Champaign, Urbana, IL, United States
| | - Mei Wang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana Champaign, Urbana, IL, United States
| | - Jonas Hauser
- Brain Health Department, Nestlé Institute of Health Sciences, Société des Produits Nestlé SA, Lausanne, Switzerland
| | - Jian Yan
- Nestlé Product Technology Center Nutrition, Vevey, Switzerland
| | - Ryan N. Dilger
- Department of Animal Sciences, University of Illinois at Urbana Champaign, Urbana, IL, United States
| | - Sharon M. Donovan
- Department of Food Science and Human Nutrition, University of Illinois at Urbana Champaign, Urbana, IL, United States
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10
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Philpott JD, Miller J, Boribong BP, Charles S, Davis JP, Kazimierczyk S, Jimena B, Leonard MM, Shreffler WG, Fasano A, Yonker LM, Jain N. Antigen-specific T cell responses in SARS-CoV-2 mRNA-vaccinated children. Cell Rep Med 2023; 4:101298. [PMID: 38016480 PMCID: PMC10772322 DOI: 10.1016/j.xcrm.2023.101298] [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: 06/07/2023] [Revised: 08/10/2023] [Accepted: 10/30/2023] [Indexed: 11/30/2023]
Abstract
SARS-CoV-2 mRNA vaccines elicit humoral responses in children that are comparable to those in adults. However, early-life T cell responses are distinct from adult ones, and questions remain about the nature and kinetics of mRNA vaccine-induced T cell responses in children. We report that Pfizer BNT162b2 mRNA vaccination elicits a significant antigen-specific CD4+ T cell response in the ≥12-year-old cohort. This response is weaker in magnitude in the 5- to 11-year-old cohort and is not improved by a higher vaccine dose (Moderna mRNA1273, 100 μg), suggesting distinct developmental programming that may underscore early-life T cell immunity. Increased effector phenotypes of antigen-specific T cells in younger children correspond with elevated anti-receptor binding domain antibody levels, albeit at the cost of memory generation. These studies highlight aspects of age-specific adaptive immune responses and the need for careful consideration of priming conditions including vaccine dose and adjuvant in the pediatric population.
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Affiliation(s)
- Jordan D Philpott
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Jordan Miller
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Brittany P Boribong
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA; Pediatric Allergy and Immunology and Center for Immunology and Inflammatory Disease, Massachusetts General Hospital, 175 Cambridge Street, Boston, MA 02114, USA
| | - Saeina Charles
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Jameson P Davis
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Simon Kazimierczyk
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Brittany Jimena
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA
| | - Maureen M Leonard
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Wayne G Shreffler
- Pediatric Allergy and Immunology and Center for Immunology and Inflammatory Disease, Massachusetts General Hospital, 175 Cambridge Street, Boston, MA 02114, USA
| | - Alessio Fasano
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA; Pediatric Allergy and Immunology and Center for Immunology and Inflammatory Disease, Massachusetts General Hospital, 175 Cambridge Street, Boston, MA 02114, USA
| | - Lael M Yonker
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA; Pediatric Allergy and Immunology and Center for Immunology and Inflammatory Disease, Massachusetts General Hospital, 175 Cambridge Street, Boston, MA 02114, USA.
| | - Nitya Jain
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, 114 16(th) Street, Charlestown, MA 02129, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Center for Computational and Integrative Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, MA 02114, USA.
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11
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Locher V, Park S, Bunis DG, Makredes S, Mayer M, Burt TD, Fragiadakis GK, Halkias J. Homeostatic cytokines reciprocally modulate the emergence of prenatal effector PLZF+CD4+ T cells in humans. JCI Insight 2023; 8:e164672. [PMID: 37856221 PMCID: PMC10721317 DOI: 10.1172/jci.insight.164672] [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: 08/29/2022] [Accepted: 10/11/2023] [Indexed: 10/21/2023] Open
Abstract
The development of human prenatal adaptive immunity progresses faster than previously appreciated, with the emergence of memory CD4+ T cells alongside regulatory T cells by midgestation. We previously identified a prenatal specific population of promyelocytic leukemia zinc finger-positive (PLZF+) CD4+ T cells with heightened effector potential that were enriched in the developing intestine and accumulated in the cord blood of infants exposed to prenatal inflammation. However, the signals that drive their tissue distribution and effector maturation are unknown. Here, we define the transcriptional and functional heterogeneity of human prenatal PLZF+CD4+ T cells and identify the compartmentalization of T helper-like (Th-like) effector function across the small intestine (SI) and mesenteric lymph nodes (MLNs). IL-7 was more abundant in the SI relative to the MLNs and drove the preferential expansion of naive PLZF+CD4+ T cells via enhanced STAT5 and MEK/ERK signaling. Exposure to IL-7 was sufficient to induce the acquisition of CD45RO expression and rapid effector function in a subset of PLZF+CD4+ T cells, identifying a human analog of memory phenotype CD4+ T cells. Further, IL-7 modulated the differentiation of Th1- and Th17-like PLZF+CD4+ T cells and thus likely contributes to the anatomic compartmentalization of human prenatal CD4+ T cell effector function.
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Affiliation(s)
- Veronica Locher
- Division of Neonatology, Department of Pediatrics, and
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, California, USA
- Committee on Immunology, University of Chicago, Chicago, Illinois, USA
| | - Sara Park
- Division of Neonatology, Department of Pediatrics, and
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, California, USA
| | - Daniel G. Bunis
- Bakar ImmunoX Initiative and
- CoLabs, UCSF, San Francisco, California, USA
| | - Stephanie Makredes
- Division of Neonatology, Department of Pediatrics, and
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, California, USA
| | - Margareta Mayer
- Division of Neonatology, Department of Pediatrics, and
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, California, USA
| | - Trevor D. Burt
- Division of Neonatology and the Children’s Health & Discovery Initiative, Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Gabriela K. Fragiadakis
- Bakar ImmunoX Initiative and
- CoLabs, UCSF, San Francisco, California, USA
- Division of Rheumatology, Department of Medicine, UCSF, San Francisco, California, USA
| | - Joanna Halkias
- Division of Neonatology, Department of Pediatrics, and
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, California, USA
- Bakar ImmunoX Initiative and
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12
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Smith MJ, Penny T, Pham Y, Sutherland AE, Jenkin G, Fahey MC, Paton MCB, Finch-Edmondson M, Miller SL, McDonald CA. Neuroprotective Action of Tacrolimus before and after Onset of Neonatal Hypoxic-Ischaemic Brain Injury in Rats. Cells 2023; 12:2659. [PMID: 37998394 PMCID: PMC10669941 DOI: 10.3390/cells12222659] [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: 10/10/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023] Open
Abstract
(1) Background: Neonatal brain injury can lead to permanent neurodevelopmental impairments. Notably, suppressing inflammatory pathways may reduce damage. To determine the role of neuroinflammation in the progression of neonatal brain injury, we investigated the effect of treating neonatal rat pups with the immunosuppressant tacrolimus at two time points: before and after hypoxic-ischaemic (HI)-induced injury. (2) Methods: To induce HI injury, postnatal day (PND) 10 rat pups underwent single carotid artery ligation followed by hypoxia (8% oxygen, 90 min). Pups received daily tacrolimus (or a vehicle) starting either 3 days before HI on PND 7 (pre-HI), or 12 h after HI (post-HI). Four doses were tested: 0.025, 0.05, 0.1 or 0.25 mg/kg/day. Pups were euthanised at PND 17 or PND 50. (3) Results: All tacrolimus doses administered pre-HI significantly reduced brain infarct size and neuronal loss, increased the number of resting microglia and reduced cellular apoptosis (p < 0.05 compared to control). In contrast, only the highest dose of tacrolimus administered post-HI (0.25 mg/kg/day) reduced brain infarct size (p < 0.05). All doses of tacrolimus reduced pup weight compared to the controls. (4) Conclusions: Tacrolimus administration 3 days pre-HI was neuroprotective, likely mediated through neuroinflammatory and cell death pathways. Tacrolimus post-HI may have limited capacity to reduce brain injury, with higher doses increasing rat pup mortality. This work highlights the benefits of targeting neuroinflammation during the acute injurious period. More specific targeting of neuroinflammation, e.g., via T-cells, warrants further investigation.
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Affiliation(s)
- Madeleine J. Smith
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC 3168, Australia
| | - Tayla Penny
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
| | - Yen Pham
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
| | - Amy E. Sutherland
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
| | - Graham Jenkin
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC 3168, Australia
| | - Michael C. Fahey
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
- Department of Paediatrics, Monash University, Clayton, VIC 3168, Australia
| | - Madison C. B. Paton
- Cerebral Palsy Alliance Research Institute, Speciality of Child and Adolescent Health, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2050, Australia; (M.C.B.P.); (M.F.-E.)
| | - Megan Finch-Edmondson
- Cerebral Palsy Alliance Research Institute, Speciality of Child and Adolescent Health, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2050, Australia; (M.C.B.P.); (M.F.-E.)
| | - Suzanne L. Miller
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC 3168, Australia
| | - Courtney A. McDonald
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (M.J.S.); (T.P.); (Y.P.); (A.E.S.); (G.J.); (M.C.F.); (S.L.M.)
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC 3168, Australia
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13
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Bolandi Z, Hashemi SM, Abasi M, Musavi M, Aghamiri S, Miyanmahaleh N, Ghanbarian H. In vitro naive CD4 + T cell differentiation upon treatment with miR-29b-loaded exosomes from mesenchymal stem cells. Mol Biol Rep 2023; 50:9037-9046. [PMID: 37725284 DOI: 10.1007/s11033-023-08767-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 08/16/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Gene regulation by microRNA (miRNA) is central in T lymphocytes differentiation processes. Here, we investigate miRNA-29b (miR-29b) roles in the reprogramming of T cell differentiation, which can be a promising therapeutic avenue for various types of inflammatory disorders such as rheumatoid arthritis and multiple sclerosis. METHODS AND RESULTS Adipose Mesenchymal Stem Cell-derived exosomes (AMSC-Exo) enriched with miR-29b were delivered into naive CD4+ T (nCD4+) cells. The expression level of important transcription factors including RAR-related orphan receptor gamma (RORγt), GATA3 binding protein (GATA3), T-box transcription factor 21, and Forkhead box P3 was determined by quantitative Real-Time PCR. Moreover, flow cytometry and Enzyme-linked Immunosorbent Assay were respectively used to measure the frequency of T regulatory cells and the levels of cytokines production (Interleukin 17, Interleukin 4, Interferon-gamma, and transforming growth factor beta. This study indicates that the transfection of miR-29b mimics into T lymphocytes through AMSC-Exo can alter the CD4+ T cells' differentiation into other types of T cells. CONCLUSIONS In conclusion, AMSC-Exo-based delivery of miR-29b can be considered as a new fascinating avenue for T cell differentiation inhibition and the future treatment of several inflammatory disorders.
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Affiliation(s)
- Zohreh Bolandi
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mahmoud Hashemi
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mozhgan Abasi
- Immunogenetics Research Center, Department of Tissue Engineering and Applied Cell Sciences, Faculty of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Maryam Musavi
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Shahin Aghamiri
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nastaran Miyanmahaleh
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Ghanbarian
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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14
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Donald K, Finlay BB. Early-life interactions between the microbiota and immune system: impact on immune system development and atopic disease. Nat Rev Immunol 2023; 23:735-748. [PMID: 37138015 DOI: 10.1038/s41577-023-00874-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2023] [Indexed: 05/05/2023]
Abstract
Prenatal and early postnatal life represent key periods of immune system development. In addition to genetics and host biology, environment has a large and irreversible role in the immune maturation and health of an infant. One key player in this process is the gut microbiota, a diverse community of microorganisms that colonizes the human intestine. The diet, environment and medical interventions experienced by an infant determine the establishment and progression of the intestinal microbiota, which interacts with and trains the developing immune system. Several chronic immune-mediated diseases have been linked to an altered gut microbiota during early infancy. The recent rise in allergic disease incidence has been explained by the 'hygiene hypothesis', which states that societal changes in developed countries have led to reduced early-life microbial exposures, negatively impacting immunity. Although human cohort studies across the globe have established a correlation between early-life microbiota composition and atopy, mechanistic links and specific host-microorganism interactions are still being uncovered. Here, we detail the progression of immune system and microbiota maturation in early life, highlight the mechanistic links between microbes and the immune system, and summarize the role of early-life host-microorganism interactions in allergic disease development.
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Affiliation(s)
- Katherine Donald
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| | - B Brett Finlay
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada.
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada.
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15
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Reynolds HM, Bettini ML. Early-life microbiota-immune homeostasis. Front Immunol 2023; 14:1266876. [PMID: 37936686 PMCID: PMC10627000 DOI: 10.3389/fimmu.2023.1266876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023] Open
Abstract
As the prevalence of allergy and autoimmune disease in industrialized societies continues to rise, improving our understanding of the mechanistic roles behind microbiota-immune homeostasis has become critical for informing therapeutic interventions in cases of dysbiosis. Of particular importance, are alterations to intestinal microbiota occurring within the critical neonatal window, during which the immune system is highly vulnerable to environmental exposures. This review will highlight recent literature concerning mechanisms of early-life microbiota-immune homeostasis as well as discuss the potential for therapeutics in restoring dysbiosis in early life.
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Affiliation(s)
| | - Matthew L. Bettini
- Department of Microbiology and Immunology, University of Utah, Salt Lake, UT, United States
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16
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Read JF, Serralha M, Armitage JD, Iqbal MM, Cruickshank MN, Saxena A, Strickland DH, Waithman J, Holt PG, Bosco A. Single cell transcriptomics reveals cell type specific features of developmentally regulated responses to lipopolysaccharide between birth and 5 years. Front Immunol 2023; 14:1275937. [PMID: 37920467 PMCID: PMC10619903 DOI: 10.3389/fimmu.2023.1275937] [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: 08/10/2023] [Accepted: 10/04/2023] [Indexed: 11/04/2023] Open
Abstract
Background Human perinatal life is characterized by a period of extraordinary change during which newborns encounter abundant environmental stimuli and exposure to potential pathogens. To meet such challenges, the neonatal immune system is equipped with unique functional characteristics that adapt to changing conditions as development progresses across the early years of life, but the molecular characteristics of such adaptations remain poorly understood. The application of single cell genomics to birth cohorts provides an opportunity to investigate changes in gene expression programs elicited downstream of innate immune activation across early life at unprecedented resolution. Methods In this study, we performed single cell RNA-sequencing of mononuclear cells collected from matched birth cord blood and 5-year peripheral blood samples following stimulation (18hrs) with two well-characterized innate stimuli; lipopolysaccharide (LPS) and Polyinosinic:polycytidylic acid (Poly(I:C)). Results We found that the transcriptional response to LPS was constrained at birth and predominantly partitioned into classical proinflammatory gene upregulation primarily by monocytes and Interferon (IFN)-signaling gene upregulation by lymphocytes. Moreover, these responses featured substantial cell-to-cell communication which appeared markedly strengthened between birth and 5 years. In contrast, stimulation with Poly(I:C) induced a robust IFN-signalling response across all cell types identified at birth and 5 years. Analysis of gene regulatory networks revealed IRF1 and STAT1 were key drivers of the LPS-induced IFN-signaling response in lymphocytes with a potential developmental role for IRF7 regulation. Conclusion Additionally, we observed distinct activation trajectory endpoints for monocytes derived from LPS-treated cord and 5-year blood, which was not apparent among Poly(I:C)-induced monocytes. Taken together, our findings provide new insight into the gene regulatory landscape of immune cell function between birth and 5 years and point to regulatory mechanisms relevant to future investigation of infection susceptibility in early life.
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Affiliation(s)
- James F. Read
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, United States
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
| | - Michael Serralha
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
| | - Jesse D. Armitage
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
- School of Biomedical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Muhammad Munir Iqbal
- Genomics WA, Joint Initiative of Telethon Kids Institute, Harry Perkins Institute of Medical Research and The University of Western Australia, Nedlands, WA, Australia
| | - Mark N. Cruickshank
- School of Biomedical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Alka Saxena
- Genomics WA, Joint Initiative of Telethon Kids Institute, Harry Perkins Institute of Medical Research and The University of Western Australia, Nedlands, WA, Australia
| | - Deborah H. Strickland
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
- UWA Centre for Child Health Research, The University of Western Australia, Nedlands, WA, Australia
| | - Jason Waithman
- School of Biomedical Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Patrick G. Holt
- Telethon Kids Institute, The University of Western Australia, Perth, WA, Australia
- UWA Centre for Child Health Research, The University of Western Australia, Nedlands, WA, Australia
| | - Anthony Bosco
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, United States
- Department of Immunobiology, The University of Arizona College of Medicine, Tucson, AZ, United States
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17
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Bergeron HC, Hansen MR, Tripp RA. Interferons-Implications in the Immune Response to Respiratory Viruses. Microorganisms 2023; 11:2179. [PMID: 37764023 PMCID: PMC10535750 DOI: 10.3390/microorganisms11092179] [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: 07/17/2023] [Revised: 08/15/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Interferons (IFN) are an assemblage of signaling proteins made and released by various host cells in response to stimuli, including viruses. Respiratory syncytial virus (RSV), influenza virus, and SARS-CoV-2 are major causes of respiratory disease that induce or antagonize IFN responses depending on various factors. In this review, the role and function of type I, II, and III IFN responses to respiratory virus infections are considered. In addition, the role of the viral proteins in modifying anti-viral immunity is noted, as are the specific IFN responses that underly the correlates of immunity and protection from disease.
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Affiliation(s)
| | | | - Ralph A. Tripp
- Department of Infectious Diseases, University of Georgia College of Veterinary Medicine, Athens, GA 30605, USA; (H.C.B.); (M.R.H.)
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18
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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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19
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Sedney CJ, Harvill ET. The Neonatal Immune System and Respiratory Pathogens. Microorganisms 2023; 11:1597. [PMID: 37375099 PMCID: PMC10301501 DOI: 10.3390/microorganisms11061597] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Neonates are more susceptible to some pathogens, particularly those that cause infection in the respiratory tract. This is often attributed to an incompletely developed immune system, but recent work demonstrates effective neonatal immune responses to some infection. The emerging view is that neonates have a distinctly different immune response that is well-adapted to deal with unique immunological challenges of the transition from a relatively sterile uterus to a microbe-rich world, tending to suppress potentially dangerous inflammatory responses. Problematically, few animal models allow a mechanistic examination of the roles and effects of various immune functions in this critical transition period. This limits our understanding of neonatal immunity, and therefore our ability to rationally design and develop vaccines and therapeutics to best protect newborns. This review summarizes what is known of the neonatal immune system, focusing on protection against respiratory pathogens and describes challenges of various animal models. Highlighting recent advances in the mouse model, we identify knowledge gaps to be addressed.
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Affiliation(s)
| | - Eric T. Harvill
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA;
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20
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Ait Djebbara S, Mcheik S, Percier P, Segueni N, Poncelet A, Truyens C. The macrophage infectivity potentiator of Trypanosoma cruzi induces innate IFN-γ and TNF-α production by human neonatal and adult blood cells through TLR2/1 and TLR4. Front Immunol 2023; 14:1180900. [PMID: 37304288 PMCID: PMC10250606 DOI: 10.3389/fimmu.2023.1180900] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/10/2023] [Indexed: 06/13/2023] Open
Abstract
We previously identified the recombinant (r) macrophage (M) infectivity (I) potentiator (P) of the protozoan parasite Trypanosoma cruzi (Tc) (rTcMIP) as an immuno-stimulatory protein that induces the release of IFN-γ, CCL2 and CCL3 by human cord blood cells. These cytokines and chemokines are important to direct a type 1 adaptive immune response. rTcMIP also increased the Ab response and favored the production of the Th1-related isotype IgG2a in mouse models of neonatal vaccination, indicating that rTcMIP could be used as a vaccine adjuvant to enhance T and B cell responses. In the present study, we used cord and adult blood cells, and isolated NK cells and human monocytes to investigate the pathways and to decipher the mechanism of action of the recombinant rTcMIP. We found that rTcMIP engaged TLR1/2 and TLR4 independently of CD14 and activated the MyD88, but not the TRIF, pathway to induce IFN-γ production by IL-15-primed NK cells, and TNF-α secretion by monocytes and myeloid dendritic cells. Our results also indicated that TNF-α boosted IFN-γ expression. Though cord blood cells displayed lower responses than adult cells, our results allow to consider rTcMIP as a potential pro-type 1 adjuvant that might be associated to vaccines administered in early life or later.
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Affiliation(s)
- Sarra Ait Djebbara
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Saria Mcheik
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Pauline Percier
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Service Immune Response, Sciensano, Brussels, Belgium
| | - Noria Segueni
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Antoine Poncelet
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Carine Truyens
- Laboratory of Parasitology, Faculty of Medicine, and ULB Center for Research in Immunology (UCRI), Université Libre de Bruxelles (ULB), Brussels, Belgium
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21
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Wang J, Metheny L. Umbilical cord blood derived cellular therapy: advances in clinical development. Front Oncol 2023; 13:1167266. [PMID: 37274288 PMCID: PMC10232824 DOI: 10.3389/fonc.2023.1167266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/04/2023] [Indexed: 06/06/2023] Open
Abstract
While cord blood (CB) is primarily utilized in allogeneic hematopoietic cell transplantation (HCT), the development of novel cell therapy products from CB is a growing and developing field. Compared to adult blood, CB is characterized by a higher percentage of hematopoietic stem cells (HSCs) and progenitor cells, less mature immune cells that retain a high capacity of proliferation, and stronger immune tolerance that requires less stringent HLA-matching when used in the allogenic setting. Given that CB is an FDA regulated product and along with its unique cellular composition, CB lends itself as a readily available and safe starting material for the development of off-the-shelf cell therapies. Moreover, non-hematologic cells such as mesenchymal stem cell (MSCs) residing in CB or CB tissue also have potential in regenerative medicine and inflammatory and autoimmune conditions. In this review, we will focus on recent clinical development on CB-derived cellular therapies in the field of oncology, including T-cell therapies such as chimeric antigen receptor (CAR) T-cells, regulatory T-cells, and virus-specific T-cells; NK-cell therapies, such as NK cell engagers and CAR NK-cells; CB-HCT and various modifications; as well as applications of MSCs in HCT.
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22
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Tabilas C, Smith NL, Rudd BD. Shaping immunity for life: Layered development of CD8 + T cells. Immunol Rev 2023; 315:108-125. [PMID: 36653953 PMCID: PMC10205662 DOI: 10.1111/imr.13185] [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] [Indexed: 01/20/2023]
Abstract
Historically, the immune system was believed to develop along a linear axis of maturity from fetal life to adulthood. Now, it is clear that distinct layers of immune cells are generated from unique waves of hematopoietic progenitors during different windows of development. This model, known as the layered immune model, has provided a useful framework for understanding why distinct lineages of B cells and γδ T cells arise in succession and display unique functions in adulthood. However, the layered immune model has not been applied to CD8+ T cells, which are still often viewed as a uniform population of cells belonging to the same lineage, with functional differences between cells arising from environmental factors encountered during infection. Recent studies have challenged this idea, demonstrating that not all CD8+ T cells are created equally and that the functions of individual CD8+ T cells in adults are linked to when they were created in the host. In this review, we discuss the accumulating evidence suggesting there are distinct ontogenetic subpopulations of CD8+ T cells and propose that the layered immune model be extended to the CD8+ T cell compartment.
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Affiliation(s)
- Cybelle Tabilas
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
- Co-first author
| | - Norah L. Smith
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
- Co-first author
| | - Brian D. Rudd
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
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23
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Molofsky AB, Locksley RM. The ins and outs of innate and adaptive type 2 immunity. Immunity 2023; 56:704-722. [PMID: 37044061 PMCID: PMC10120575 DOI: 10.1016/j.immuni.2023.03.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 04/14/2023]
Abstract
Type 2 immunity is orchestrated by a canonical group of cytokines primarily produced by innate lymphoid cells, group 2, and their adaptive counterparts, CD4+ helper type 2 cells, and elaborated by myeloid cells and antibodies that accumulate in response. Here, we review the cytokine and cellular circuits that mediate type 2 immunity. Building from insights in cytokine evolution, we propose that innate type 2 immunity evolved to monitor the status of microbe-rich epithelial barriers (outside) and sterile parenchymal borders (inside) to meet the functional demands of local tissue, and, when necessary, to relay information to the adaptive immune system to reinforce demarcating borders to sustain these efforts. Allergic pathology likely results from deviations in local sustaining units caused by alterations imposed by environmental effects during postnatal developmental windows and exacerbated by mutations that increase vulnerabilities. This framework positions T2 immunity as central to sustaining tissue repair and regeneration and provides a context toward understanding allergic disease.
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Affiliation(s)
- Ari B Molofsky
- Department of Lab Medicine, University of California, San Francisco, San Francisco, CA 94143-0451, USA
| | - Richard M Locksley
- Howard Hughes Medical Institute and Department of Medicine, University of California, San Francisco, San Francisco, CA 94143-0795, USA.
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24
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Kibler A, Seifert M, Budeus B. Age-related changes of the human splenic marginal zone B cell compartment. Immunol Lett 2023; 256-257:59-65. [PMID: 37044264 DOI: 10.1016/j.imlet.2023.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/24/2023] [Accepted: 04/07/2023] [Indexed: 04/14/2023]
Abstract
In this review, we will summarize the growing body of knowledge on the age-related changes of human splenic B cell composition and molecular evidence of immune maturation and discuss the contribution of these changes on splenic protective function. From birth on, the splenic marginal zone (sMZ) contains a specialized B cell subpopulation, which recruits and archives memory B cells from immune responses throughout the organism. The quality of sMZ B cell responses is augmented by germinal center (GC)-dependent maturation of memory B cells during childhood, however, in old age, these mechanisms likely contribute to waning of splenic protective function.
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Affiliation(s)
- Artur Kibler
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Marc Seifert
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany; Department of Hematology, Oncology and Clinical Immunology, Heinrich-Heine University, Düsseldorf, Germany.
| | - Bettina Budeus
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
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25
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Cowell E, Kris LP, Bracho-Granado G, Jaber H, Smith JR, Carr JM. Zika virus infection of retinal cells and the developing mouse eye induces host responses that contrasts to the brain and dengue virus infection. J Neurovirol 2023; 29:187-202. [PMID: 37022660 DOI: 10.1007/s13365-023-01123-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 04/07/2023]
Abstract
Zika virus (ZIKV) infection causes ocular and neurological pathologies with ZIKV-induction of developmental abnormalities following in utero infection a major concern. The study here has compared ZIKV and the related dengue virus (DENV) infection in the eye and brain. In vitro, both ZIKV and DENV could infect cell lines representing the retinal pigmented epithelium, endothelial cells, and Mueller cells, with distinct innate responses in each cell type. In a 1-day old mouse challenge model, both ZIKV and DENV infected the brain and eye by day 6 post-infection (pi). ZIKV was present at comparable levels in both tissues, with RNA increasing with time post-infection. DENV infected the brain, but RNA was detected in the eye of less than half of the mice challenged. NanoString analysis demonstrated comparable host responses in the brain for both viruses, including induction of mRNA for myosin light chain-2 (Mly2), and numerous antiviral and inflammatory genes. Notably, mRNA for multiple complement proteins were induced, but C2 and C4a were uniquely induced by ZIKV but not DENV. Consistent with the viral infection in the eye, DENV induced few responses while ZIKV induced substantial inflammatory and antiviral responses. Compared to the brain, ZIKV in the eye did not induce mRNAs such as C3, downregulated Retnla, and upregulated CSF-1. Morphologically, the ZIKV-infected retina demonstrated reduced formation of specific retinal layers. Thus, although ZIKV and DENV can both infect the eye and brain, there are distinct differences in host cell and tissue inflammatory responses that may be relevant to ZIKV replication and disease.
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Affiliation(s)
- E Cowell
- Microbiology and Infectious Diseases, College of Medicine and Public Health, Flinders University, Room 5D-316, Flinders Medical Centre, Flinders Drive, Bedford Park, Adelaide, South Australia, 5042, Australia
| | - L P Kris
- Microbiology and Infectious Diseases, College of Medicine and Public Health, Flinders University, Room 5D-316, Flinders Medical Centre, Flinders Drive, Bedford Park, Adelaide, South Australia, 5042, Australia
| | - G Bracho-Granado
- Microbiology and Infectious Diseases, College of Medicine and Public Health, Flinders University, Room 5D-316, Flinders Medical Centre, Flinders Drive, Bedford Park, Adelaide, South Australia, 5042, Australia
| | - H Jaber
- Microbiology and Infectious Diseases, College of Medicine and Public Health, Flinders University, Room 5D-316, Flinders Medical Centre, Flinders Drive, Bedford Park, Adelaide, South Australia, 5042, Australia
| | - J R Smith
- Eye and Vision Health, College of Medicine and Public Health, Flinders University, Bedford Park, Adelaide, South Australia, 5042, Australia
| | - J M Carr
- Microbiology and Infectious Diseases, College of Medicine and Public Health, Flinders University, Room 5D-316, Flinders Medical Centre, Flinders Drive, Bedford Park, Adelaide, South Australia, 5042, Australia.
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26
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Majer C, Lingel H, Arra A, Heuft HG, Bretschneider D, Balk S, Vogel K, Brunner-Weinzierl MC. PD-1/PD-L1 Control of Antigen-Specifically Activated CD4 T-Cells of Neonates. Int J Mol Sci 2023; 24:ijms24065662. [PMID: 36982735 PMCID: PMC10051326 DOI: 10.3390/ijms24065662] [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: 02/17/2023] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Newborns are highly susceptible to infections; however, the underlying mechanisms that regulate the anti-microbial T-helper cells shortly after birth remain incompletely understood. To address neonatal antigen-specific human T-cell responses against bacteria, Staphylococcus aureus (S. aureus) was used as a model pathogen and comparatively analyzed in terms of the polyclonal staphylococcal enterotoxin B (SEB) superantigen responses. Here, we report that neonatal CD4 T-cells perform activation-induced events upon S. aureus/APC-encounter including the expression of CD40L and PD-1, as well as the production of Th1 cytokines, concomitant to T-cell proliferation. The application of a multiple regression analysis revealed that the proliferation of neonatal T-helper cells was determined by sex, IL-2 receptor expression and the impact of the PD-1/PD-L1 blockade. Indeed, the treatment of S. aureus-activated neonatal T-helper cells with PD-1 and PD-L1 blocking antibodies revealed the specific regulation of the immediate neonatal T-cell responses with respect to the proliferation and frequencies of IFNγ producers, which resembled in part the response of adults’ memory T-cells. Intriguingly, the generation of multifunctional T-helper cells was regulated by the PD-1/PD-L1 axis exclusively in the neonatal CD4 T-cell lineage. Together, albeit missing memory T-cells in neonates, their unexperienced CD4 T-cells are well adapted to mount immediate and strong anti-bacterial responses that are tightly controlled by the PD-1/PD-L1 axis, thereby resembling the regulation of recalled memory T-cells of adults.
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Affiliation(s)
- Christiane Majer
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Holger Lingel
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Aditya Arra
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Hans-Gert Heuft
- Institute of Transfusion Medicine and Immunohematology, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | | | - Silke Balk
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Katrin Vogel
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Monika C. Brunner-Weinzierl
- Department of Experimental Pediatrics, Medical Faculty, Otto-von-Guericke-University, 39120 Magdeburg, Germany
- Correspondence: ; Tel.: +49-391-6724003
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27
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Beijnen EMS, Odumade OA, Haren SDV. Molecular Determinants of the Early Life Immune Response to COVID-19 Infection and Immunization. Vaccines (Basel) 2023; 11:vaccines11030509. [PMID: 36992093 DOI: 10.3390/vaccines11030509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/11/2023] [Accepted: 02/18/2023] [Indexed: 02/25/2023] Open
Abstract
Clinical manifestations from primary COVID infection in children are generally less severe as compared to adults, and severe pediatric cases occur predominantly in children with underlying medical conditions. However, despite the lower incidence of disease severity, the burden of COVID-19 in children is not negligible. Throughout the course of the pandemic, the case incidence in children has substantially increased, with estimated cumulative rates of SARS-CoV-2 infection and COVID-19 symptomatic illness in children comparable to those in adults. Vaccination is a key approach to enhance immunogenicity and protection against SARS-CoV-2. Although the immune system of children is functionally distinct from that of other age groups, vaccine development specific for the pediatric population has mostly been limited to dose-titration of formulations that were developed primarily for adults. In this review, we summarize the literature pertaining to age-specific differences in COVID-19 pathogenesis and clinical manifestation. In addition, we review molecular distinctions in how the early life immune system responds to infection and vaccination. Finally, we discuss recent advances in development of pediatric COVID-19 vaccines and provide future directions for basic and translational research in this area.
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Affiliation(s)
- Elisabeth M S Beijnen
- Precision Vaccines Program, Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Oludare A Odumade
- Precision Vaccines Program, Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
- Department of Pediatrics, Division of Medicine Critical Care, Boston Children's Hospital, Boston, MA 02115, USA
| | - Simon D van Haren
- Precision Vaccines Program, Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
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28
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Paiola M, Dimitrakopoulou D, Pavelka MS, Robert J. Amphibians as a model to study the role of immune cell heterogeneity in host and mycobacterial interactions. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 139:104594. [PMID: 36403788 DOI: 10.1016/j.dci.2022.104594] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Mycobacterial infections represent major concerns for aquatic and terrestrial vertebrates including humans. Although our current knowledge is mostly restricted to Mycobacterium tuberculosis and mammalian host interactions, increasing evidence suggests common features in endo- and ectothermic animals infected with non-tuberculous mycobacteria (NTMs) like those described for M. tuberculosis. Importantly, most of the pathogenic and non-pathogenic NTMs detected in amphibians from wild, farmed, and research facilities represent, in addition to the potential economic loss, a rising concern for human health. Upon mycobacterial infection in mammals, the protective immune responses involving the innate and adaptive immune systems are highly complex and therefore not fully understood. This complexity results from the versatility and resilience of mycobacteria to hostile conditions as well as from the immune cell heterogeneity arising from the distinct developmental origins according with the concept of layered immunity. Similar to the differing responses of neonates versus adults during tuberculosis development, the pathogenesis and inflammatory responses are stage-specific in Xenopus laevis during infection by the NTM M. marinum. That is, both in human fetal and neonatal development and in tadpole development, responses are characterized by hypo-responsiveness and a lower capacity to contain mycobacterial infections. Similar to a mammalian fetus and neonates, T cells and myeloid cells in Xenopus tadpoles and axolotls are different from the adult immune cells. Fetal and amphibian larval T cells, which are characterized by a lower T cell receptor (TCR) repertoire diversity, are biased toward regulatory function, and they have distinct progenitor origins from those of the adult immune cells. Some early developing T cells and likely macrophage subpopulations are conserved in adult anurans and mammals, and therefore, they likely play an important role in the host-pathogen interactions from early stages of development to adulthood. Thus, we propose the use of developing amphibians, which have the advantage of being free-living early in their development, as an alternative and complementary model to study the role of immune cell heterogeneity in host-mycobacteria interactions.
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Affiliation(s)
- Matthieu Paiola
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Dionysia Dimitrakopoulou
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Martin S Pavelka
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Jacques Robert
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, 14642, USA.
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29
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Gustafson CE, Weyand CM, Goronzy JJ. Immune Deficiencies at the Extremes of Age. Clin Immunol 2023. [DOI: 10.1016/b978-0-7020-8165-1.00021-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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30
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Early microbial exposure shapes adult immunity by altering CD8+ T cell development. Proc Natl Acad Sci U S A 2022; 119:e2212548119. [PMID: 36442114 PMCID: PMC9894172 DOI: 10.1073/pnas.2212548119] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Microbial exposure during development can elicit long-lasting effects on the health of an individual. However, how microbial exposure in early life leads to permanent changes in the immune system is unknown. Here, we show that the microbial environment alters the set point for immune susceptibility by altering the developmental architecture of the CD8+ T cell compartment. In particular, early microbial exposure results in the preferential expansion of highly responsive fetal-derived CD8+ T cells that persist into adulthood and provide the host with enhanced immune protection against intracellular pathogens. Interestingly, microbial education of fetal-derived CD8+ T cells occurs during thymic development rather than in the periphery and involves the acquisition of a more effector-like epigenetic program. Collectively, our results provide a conceptual framework for understanding how microbial colonization in early life leads to lifelong changes in the immune system.
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31
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Gao Y, O’Hely M, Quinn TP, Ponsonby AL, Harrison LC, Frøkiær H, Tang MLK, Brix S, Kristiansen K, Burgner D, Saffery R, Ranganathan S, Collier F, Vuillermin P. Maternal gut microbiota during pregnancy and the composition of immune cells in infancy. Front Immunol 2022; 13:986340. [PMID: 36211431 PMCID: PMC9535361 DOI: 10.3389/fimmu.2022.986340] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
Background Preclinical studies have shown that maternal gut microbiota during pregnancy play a key role in prenatal immune development but the relevance of these findings to humans is unknown. The aim of this prebirth cohort study was to investigate the association between the maternal gut microbiota in pregnancy and the composition of the infant’s cord and peripheral blood immune cells over the first year of life. Methods The Barwon Infant Study cohort (n=1074 infants) was recruited using an unselected sampling frame. Maternal fecal samples were collected at 36 weeks of pregnancy and flow cytometry was conducted on cord/peripheral blood collected at birth, 6 and 12 months of age. Among a randomly selected sub-cohort with available samples (n=293), maternal gut microbiota was characterized by sequencing the 16S rRNA V4 region. Operational taxonomic units (OTUs) were clustered based on their abundance. Associations between maternal fecal microbiota clusters and infant granulocyte, monocyte and lymphocyte subsets were explored using compositional data analysis. Partial least squares (PLS) and regression models were used to investigate the relationships/associations between environmental, maternal and infant factors, and OTU clusters. Results We identified six clusters of co-occurring OTUs. The first two components in the PLS regression explained 39% and 33% of the covariance between the maternal prenatal OTU clusters and immune cell populations in offspring at birth. A cluster in which Dialister, Escherichia, and Ruminococcus were predominant was associated with a lower proportion of granulocytes (p=0.002), and higher proportions of both central naïve CD4+ T cells (CD4+/CD45RA+/CD31−) (p<0.001) and naïve regulatory T cells (Treg) (CD4+/CD45RA+/FoxP3low) (p=0.02) in cord blood. The association with central naïve CD4+ T cells persisted to 12 months of age. Conclusion This birth cohort study provides evidence consistent with past preclinical models that the maternal gut microbiota during pregnancy plays a role in shaping the composition of innate and adaptive elements of the infant’s immune system following birth.
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Affiliation(s)
- Yuan Gao
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Child Health Research Unit, Barwon Health, Geelong, VIC, Australia
- Faculty of Science, Copenhagen University, København, Denmark
| | - Martin O’Hely
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
| | | | - Anne-Louise Ponsonby
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
- The Early Brain Science Department, Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Leonard C. Harrison
- Population Health and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia
| | - Hanne Frøkiær
- Faculty of Science, Copenhagen University, København, Denmark
| | - Mimi L. K. Tang
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
- Department of Pediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Susanne Brix
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Karsten Kristiansen
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Dave Burgner
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
| | - Richard Saffery
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
- Department of Pediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Sarath Ranganathan
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC, Australia
- Department of Pediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Fiona Collier
- School of Medicine, Deakin University, Geelong, VIC, Australia
| | - Peter Vuillermin
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Child Health Research Unit, Barwon Health, Geelong, VIC, Australia
- *Correspondence: Peter Vuillermin,
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The Impact of Short-Chain Fatty Acids on Neonatal Regulatory T Cells. Nutrients 2022; 14:nu14183670. [PMID: 36145046 PMCID: PMC9503436 DOI: 10.3390/nu14183670] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 11/16/2022] Open
Abstract
Over the first weeks of life, the neonatal gastrointestinal tract is rapidly colonised by a diverse range of microbial species that come to form the ‘gut microbiota’. Microbial colonisation of the neonatal gut is a well-established regulator of several physiological processes that contribute to immunological protection in postnatal life, including the development of the intestinal mucosa and adaptive immunity. However, the specific microbiota-derived signals that mediate these processes have not yet been fully characterised. Accumulating evidence suggests short-chain fatty acids (SCFAs), end-products of intestinal bacterial metabolism, as one of the key mediators of immune development in early life. Critical to neonatal health is the development of regulatory T (Treg) cells that promote and maintain immunological tolerance against self and innocuous antigens. Several studies have shown that SCFAs can induce the differentiation and expansion of Tregs but also mediate pathological effects in abnormal amounts. However, the exact mechanisms through which SCFAs regulate Treg development and pathologies in early life remain poorly defined. In this review, we summarise the current knowledge surrounding SCFAs and their potential impact on the neonatal immune system with a particular focus on Tregs, and the possible mechanisms through which SCFAs achieve their immune modulatory effect.
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TLR agonists induce sustained IgG to hemagglutinin stem and modulate T cells following newborn vaccination. NPJ Vaccines 2022; 7:102. [PMID: 36038596 PMCID: PMC9424286 DOI: 10.1038/s41541-022-00523-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 08/05/2022] [Indexed: 11/08/2022] Open
Abstract
The newborn immune system is characterized by diminished immune responses that leave infants vulnerable to virus-mediated disease and make vaccination more challenging. Optimal vaccination strategies for influenza A virus (IAV) in newborns should result in robust levels of protective antibodies, including those with broad reactivity to combat the variability in IAV strains across seasons. The stem region of the hemagglutinin (HA) molecule is a target of such antibodies. Using a nonhuman primate model, we investigate the capacity of newborns to generate and maintain antibodies to the conserved stem region following vaccination. We find adjuvanting an inactivated vaccine with the TLR7/8 agonist R848 is effective in promoting sustained HA stem-specific IgG. Unexpectedly, HA stem-specific antibodies were generated with a distinct kinetic pattern compared to the overall response. Administration of R848 was associated with increased influenza-specific T follicular helper cells as well as Tregs with a less suppressive phenotype, suggesting adjuvant impacts multiple cell types that have the potential to contribute to the HA-stem response.
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Negi S, Hashimoto-Hill S, Alenghat T. Neonatal microbiota-epithelial interactions that impact infection. Front Microbiol 2022; 13:955051. [PMID: 36090061 PMCID: PMC9453604 DOI: 10.3389/fmicb.2022.955051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/31/2022] [Indexed: 11/13/2022] Open
Abstract
Despite modern therapeutic developments and prophylactic use of antibiotics during birth or in the first few months of life, enteric infections continue to be a major cause of neonatal mortality and morbidity globally. The neonatal period is characterized by initial intestinal colonization with microbiota and concurrent immune system development. It is also a sensitive window during which perturbations to the environment or host can significantly impact colonization by commensal microbes. Extensive research has demonstrated that these early life alterations to the microbiota can lead to enhanced susceptibility to enteric infections and increased systemic dissemination in newborns. Various contributing factors continue to pose challenges in prevention and control of neonatal enteric infections. These include alterations in the gut microbiota composition, impaired immune response, and effects of maternal factors. In addition, there remains limited understanding for how commensal microbes impact host-pathogen interactions in newborns. In this review, we discuss the recent recognition of initial microbiota-epithelial interactions that occur in neonates and can regulate susceptibility to intestinal infection. These studies suggest the development of neonatal prophylactic or therapeutic regimens that include boosting epithelial defense through microbiota-directed interventions.
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The Presence of PDL-1 on CD8+ Lymphocytes Is Linked to Survival in Neonatal Sepsis. CHILDREN 2022; 9:children9081171. [PMID: 36010061 PMCID: PMC9406495 DOI: 10.3390/children9081171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 11/17/2022]
Abstract
Sepsis is life-threatening organ dysfunction caused by a dysregulated host response to infection. Neonatal sepsis is the main cause of death in newborns, especially preterm infants. The pathogenesis of sepsis is based on a hyper-inflammatory syndrome combined with an immunosuppressive mechanism in sepsis. This study aimed to find critical parameters that are associated with the outcome of newborns with suspected sepsis. Understanding the association might have clinical relevance for immuno-monitoring, outcome prediction, and targeted therapy. Methods: A total of 210 newborn infants no older than 4 days with suspected sepsis at admission in Karaganda (Kazakhstan) were prospectively enrolled. Blood cultures were incubated, and pathogens in positive cultures were determined by MALDI-TOF. An immunological assay for blood cell components was conducted by flow cytometry with antibody cocktails. The diagnostic criteria for neonatal sepsis were identified by qualified neonatologists and included both clinical sepsis and/or positive blood culture. The analyzed infants were grouped into non-septic infants, surviving septic infants, and deceased septic infants. The results showed that deceased septic newborns had a lower level of CD8+ lymphocytes and higher PDL-1 expression in comparison with surviving septic newborns. PDL-1 expression on CD8+ T cells might play an immunosuppressive role during neonatal sepsis and might be used as a laboratory biomarker in the future.
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36
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Moise KJ, Oepkes D, Lopriore E, Bredius RGM. Targeting neonatal Fc receptor: potential clinical applications in pregnancy. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2022; 60:167-175. [PMID: 35229965 DOI: 10.1002/uog.24891] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
The neonatal Fc receptor (FcRn) plays an important role in the transfer of the immunoglobulin G isotype (IgG) from the mother to the fetus. FcRn expressed on endothelial cells also binds to IgG and albumin, regulating the circulating half-lives of these proteins. Alloimmune and autoimmune IgG antibodies have been implicated in various perinatal immune-mediated diseases. FcRn-mediated placental transfer of pathogenic antibodies can result in cell and tissue injury in the fetus and neonate, with devastating outcomes. Thus, blockade of FcRn may be an effective treatment strategy in managing these conditions and could additionally reduce the concentration of pathogenic antibodies in the maternal circulation by preventing IgG recycling. In this review, we discuss the biology of FcRn, the rationale and considerations for development of FcRn-blocking agents, and their potential clinical applications in various perinatal immune-mediated diseases. © 2022 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- K J Moise
- Department of Women's Health, Dell Medical School, University of Texas at Austin, Austin, TX, USA
| | - D Oepkes
- Department of Obstetrics and Fetal Therapy, Leiden University Medical Center, Leiden, The Netherlands
| | - E Lopriore
- Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - R G M Bredius
- Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
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37
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Trofimov A, Brouillard P, Larouche JD, Séguin J, Laverdure JP, Brasey A, Ehx G, Roy DC, Busque L, Lachance S, Lemieux S, Perreault C. Two types of human TCR differentially regulate reactivity to self and non-self antigens. iScience 2022; 25:104968. [PMID: 36111255 PMCID: PMC9468382 DOI: 10.1016/j.isci.2022.104968] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/24/2022] [Accepted: 08/12/2022] [Indexed: 11/30/2022] Open
Abstract
Based on analyses of TCR sequences from over 1,000 individuals, we report that the TCR repertoire is composed of two ontogenically and functionally distinct types of TCRs. Their production is regulated by variations in thymic output and terminal deoxynucleotidyl transferase (TDT) activity. Neonatal TCRs derived from TDT-negative progenitors persist throughout life, are highly shared among subjects, and are reported as disease-associated. Thus, 10%–30% of most frequent cord blood TCRs are associated with common pathogens and autoantigens. TDT-dependent TCRs present distinct structural features and are less shared among subjects. TDT-dependent TCRs are produced in maximal numbers during infancy when thymic output and TDT activity reach a summit, are more abundant in subjects with AIRE mutations, and seem to play a dominant role in graft-versus-host disease. Factors decreasing thymic output (age, male sex) negatively impact TCR diversity. Males compensate for their lower repertoire diversity via hyperexpansion of selected TCR clonotypes. Over 108 TCR CDR3 sequences from ∼103 individuals and 7 cohorts were analyzed The TCR repertoire is composed of two layers: neonatal and TDT-dependent layer ∼70% of frequent cord blood TCRs are associated with common pathogens Acute graft-vs-host disease correlates with a high proportion of TDT-dependent TCRs
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Affiliation(s)
- Assya Trofimov
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Quebec Institute for Learning Algorithms (Mila), Montreal, Quebec H2S 3H1, Canada
- Currently Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
- Currently Department of Physics, University of Washington, Seattle, WA 98195-1560, USA
| | - Philippe Brouillard
- Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Quebec Institute for Learning Algorithms (Mila), Montreal, Quebec H2S 3H1, Canada
| | - Jean-David Larouche
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Jonathan Séguin
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Jean-Philippe Laverdure
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Ann Brasey
- Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
| | - Gregory Ehx
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Currently Interdisciplinary Cluster for Applied Geno-Proteomics (GIGA-I3), University of Liege, Liege 4000, Belgium
| | | | - Lambert Busque
- Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
| | - Silvy Lachance
- Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
| | - Sébastien Lemieux
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Computer Science and Research Operations, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Biochemistry at University of Montreal, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Corresponding author
| | - Claude Perreault
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
- Corresponding author
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38
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Hartana CA, Garcia-Broncano P, Rassadkina Y, Lian X, Jiang C, Einkauf KB, Maswabi K, Ajibola G, Moyo S, Mohammed T, Maphorisa C, Makhema J, Yuki Y, Martin M, Bennett K, Jean-Philippe P, Viard M, Hughes MD, Powis KM, Carrington M, Lockman S, Gao C, Yu XG, Kuritzkes DR, Shapiro R, Lichterfeld M. Immune correlates of HIV-1 reservoir cell decline in early-treated infants. Cell Rep 2022; 40:111126. [PMID: 35858580 PMCID: PMC9314543 DOI: 10.1016/j.celrep.2022.111126] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/13/2022] [Accepted: 06/30/2022] [Indexed: 11/03/2022] Open
Abstract
Initiation of antiretroviral therapy (ART) in infected neonates within hours after birth limits viral reservoir seeding but does not prevent long-term HIV-1 persistence. Here, we report parallel assessments of HIV-1 reservoir cells and innate antiviral immune responses in a unique cohort of 37 infected neonates from Botswana who started ART extremely early, frequently within hours after birth. Decline of genome-intact HIV-1 proviruses occurs rapidly after initiation of ART and is associated with an increase in natural killer (NK) cell populations expressing the cytotoxicity marker CD57 and with a decrease in NK cell subsets expressing the inhibitory marker NKG2A. Immune perturbations in innate lymphoid cells, myeloid dendritic cells, and monocytes detected at birth normalize after rapid institution of antiretroviral therapy but do not notably influence HIV-1 reservoir cell dynamics. These results suggest that HIV-1 reservoir cell seeding and evolution in early-treated neonates is markedly influenced by antiviral NK cell immune responses.
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Affiliation(s)
- Ciputra Adijaya Hartana
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Pilar Garcia-Broncano
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA
| | | | - Xiaodong Lian
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Chenyang Jiang
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Kevin B Einkauf
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Kenneth Maswabi
- Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | - Gbolahan Ajibola
- Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | - Sikhulile Moyo
- Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | - Terence Mohammed
- Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | | | - Joseph Makhema
- Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | - Yuko Yuki
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 20892, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Maureen Martin
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 20892, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Kara Bennett
- Bennett Statistical Consulting, Inc., Ballston Lake, NY 12019, USA
| | | | - Mathias Viard
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 20892, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Michael D Hughes
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Kathleen M Powis
- Harvard Medical School, Boston, MA 02115, USA; Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana; Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Medicine and Pediatrics, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Mary Carrington
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 20892, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Shahin Lockman
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA; Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana
| | - Ce Gao
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Xu G Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Daniel R Kuritzkes
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Roger Shapiro
- Harvard Medical School, Boston, MA 02115, USA; Botswana - Harvard AIDS Institute Partnership, Gaborone, Botswana; Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Mathias Lichterfeld
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA; Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA.
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39
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Understanding the Mechanism of Diabetes Mellitus in a LRBA-Deficient Patient. BIOLOGY 2022; 11:biology11040612. [PMID: 35453810 PMCID: PMC9025338 DOI: 10.3390/biology11040612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/03/2022] [Accepted: 04/07/2022] [Indexed: 12/04/2022]
Abstract
The scope of this study is to show that DM in a LRBA-deficient patient with a stop codon mutation (c.3999 G > A) was not mediated through autoimmunity. We have evaluated the ability of the proband’s T cells to be activated by assessing their CTLA-4 expression. A nonsignificant difference was seen in the CTLA-4 expression on CD3+ T cells compared to the healthy control at basal level and after stimulation with PMA/ionomycin. Blood transcriptomic analysis have shown a remarkable increase in abundance of transcripts related to CD71+ erythroid cells. There were no differences in the expression of modules related to autoimmunity diseases between the proband and pooled healthy controls. In addition, our novel findings show that siRNA knockdown of LRBA in mouse pancreatic β-cells leads reduced cellular proinsulin, insulin and consequently insulin secretion, without change in cell viability in cultured MIN6 cells.
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40
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Eddens T, Parks OB, Williams JV. Neonatal Immune Responses to Respiratory Viruses. Front Immunol 2022; 13:863149. [PMID: 35493465 PMCID: PMC9047724 DOI: 10.3389/fimmu.2022.863149] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/23/2022] [Indexed: 11/30/2022] Open
Abstract
Respiratory tract infections are a leading cause of morbidity and mortality in newborns, infants, and young children. These early life infections present a formidable immunologic challenge with a number of possibly conflicting goals: simultaneously eliminate the acute pathogen, preserve the primary gas-exchange function of the lung parenchyma in a developing lung, and limit long-term sequelae of both the infection and the inflammatory response. The latter has been most well studied in the context of childhood asthma, where multiple epidemiologic studies have linked early life viral infection with subsequent bronchospasm. This review will focus on the clinical relevance of respiratory syncytial virus (RSV), human metapneumovirus (HMPV), and rhinovirus (RV) and examine the protective and pathogenic host responses within the neonate.
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Affiliation(s)
- Taylor Eddens
- Pediatric Scientist Development Program, University of Pittsburgh Medical Center (UPMC) Children’s Hospital of Pittsburgh, Pittsburgh, PA, United States
- Division of Allergy/Immunology, University of Pittsburgh Medical Center (UPMC) Children’s Hospital of Pittsburgh, Pittsburgh, PA, United States
| | - Olivia B. Parks
- Medical Scientist Training Program, University of Pittsburgh, Pittsburgh, PA, United States
| | - John V. Williams
- Division of Pediatric Infectious Diseases, University of Pittsburgh Medical Center (UPMC) Children’s Hospital of Pittsburgh, Pittsburgh, PA, United States
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41
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Bigley TM, Yang L, Kang LI, Saenz JB, Victorino F, Yokoyama WM. Disruption of thymic central tolerance by infection with murine roseolovirus induces autoimmune gastritis. J Exp Med 2022; 219:213039. [PMID: 35226043 PMCID: PMC8932538 DOI: 10.1084/jem.20211403] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/29/2021] [Accepted: 01/24/2022] [Indexed: 12/12/2022] Open
Abstract
Infections with herpesviruses, including human roseoloviruses, have been proposed to cause autoimmune disease, but defining a causal relationship and mechanism has been difficult due to the ubiquitous nature of infection and development of autoimmunity long after acute infection. Murine roseolovirus (MRV) is highly related to human roseoloviruses. Herein we show that neonatal MRV infection induced autoimmune gastritis (AIG) in adult mice in the absence of ongoing infection. MRV-induced AIG was dependent on replication during the neonatal period and was CD4+ T cell and IL-17 dependent. Moreover, neonatal MRV infection was associated with development of a wide array of autoantibodies in adult mice. Finally, neonatal MRV infection reduced medullary thymic epithelial cell numbers, thymic dendritic cell numbers, and thymic expression of AIRE and tissue-restricted antigens, in addition to increasing thymocyte apoptosis at the stage of negative selection. These findings strongly suggest that infection with a roseolovirus early in life results in disruption of central tolerance and development of autoimmune disease.
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Affiliation(s)
- Tarin M. Bigley
- Department of Pediatrics, Division of Rheumatology, Washington University School of Medicine, St. Louis, MO
| | - Liping Yang
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, MO
| | - Liang-I Kang
- Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, St. Louis, MO
| | - Jose B. Saenz
- Department of Medicine, Division of Gastroenterology, Washington University School of Medicine, St. Louis, MO
| | - Francisco Victorino
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, MO
| | - Wayne M. Yokoyama
- Department of Medicine, Division of Rheumatology, Washington University School of Medicine, St. Louis, MO
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42
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Ucciferri CC, Dunn SE. Effect of puberty on the immune system: Relevance to multiple sclerosis. Front Pediatr 2022; 10:1059083. [PMID: 36533239 PMCID: PMC9755749 DOI: 10.3389/fped.2022.1059083] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/03/2022] [Indexed: 12/03/2022] Open
Abstract
Puberty is a dynamic period marked by changing levels of sex hormones, the development of secondary sexual characteristics and reproductive maturity. This period has profound effects on various organ systems, including the immune system. The critical changes that occur in the immune system during pubertal onset have been shown to have implications for autoimmune conditions, including Multiple Sclerosis (MS). MS is rare prior to puberty but can manifest in children after puberty. This disease also has a clear female preponderance that only arises following pubertal onset, highlighting a potential role for sex hormones in autoimmunity. Early onset of puberty has also been shown to be a risk factor for MS. The purpose of this review is to overview the evidence that puberty regulates MS susceptibility and disease activity. Given that there is a paucity of studies that directly evaluate the effects of puberty on the immune system, we also discuss how the immune system is different in children and mice of pre- vs. post-pubertal ages and describe how gonadal hormones may regulate these immune mechanisms. We present evidence that puberty enhances the expression of co-stimulatory molecules and cytokine production by type 2 dendritic cells (DC2s) and plasmacytoid dendritic cells (pDCs), increases T helper 1 (Th1), Th17, and T follicular helper immunity, and promotes immunoglobulin (Ig)G antibody production. Overall, this review highlights how the immune system undergoes a functional maturation during puberty, which has the potential to explain the higher prevalence of MS and other autoimmune diseases seen in adolescence.
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Affiliation(s)
- Carmen C Ucciferri
- Department of Immunology, The University of Toronto, Toronto, ON, Canada
| | - Shannon E Dunn
- Department of Immunology, The University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada.,Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
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43
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Sakleshpur S, Steed AL. Influenza: Toward understanding the immune response in the young. Front Pediatr 2022; 10:953150. [PMID: 36061377 PMCID: PMC9437304 DOI: 10.3389/fped.2022.953150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/28/2022] [Indexed: 12/12/2022] Open
Abstract
Annually influenza causes a global epidemic resulting in 290,000 to 650,000 deaths and extracts a massive toll on healthcare and the economy. Infants and children are more susceptible to infection and have more severe symptoms than adults likely mitigated by differences in their innate and adaptive immune responses. While it is unclear the exact mechanisms with which the young combat influenza, it is increasingly understood that their immune responses differ from adults. Specifically, underproduction of IFN-γ and IL-12 by the innate immune system likely hampers viral clearance while upregulation of IL-6 may create excessive damaging inflammation. The infant's adaptive immune system preferentially utilizes the Th-2 response that has been tied to γδ T cells and their production of IL-17, which may be less advantageous than the adult Th-1 response for antiviral immunity. This differential immune response of the young is considered to serve as a unique evolutionary adaptation such that they preferentially respond to infection broadly rather than a pathogen-specific one generated by adults. This unique function of the young immune system is temporally, and possibly mechanistically, tied to the microbiota, as they both develop in coordination early in life. Additional research into the relationship between the developing microbiota and the immune system is needed to develop therapies effective at combating influenza in the youngest and most vulnerable of our population.
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Affiliation(s)
- Sonia Sakleshpur
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
| | - Ashley L Steed
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States
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44
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Thapa P, Guyer RS, Yang AY, Parks CA, Brusko TM, Brusko M, Connors TJ, Farber DL. Infant T cells are developmentally adapted for robust lung immune responses through enhanced T cell receptor signaling. Sci Immunol 2021; 6:eabj0789. [PMID: 34890254 PMCID: PMC8765725 DOI: 10.1126/sciimmunol.abj0789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Infants require coordinated immune responses to prevent succumbing to multiple infectious challenges during early life, particularly in the respiratory tract. The mechanisms by which infant T cells are functionally adapted for these responses are not well understood. Here, we demonstrated using an in vivo mouse cotransfer model that infant T cells generated greater numbers of lung-homing effector cells in response to influenza infection compared with adult T cells in the same host, due to augmented T cell receptor (TCR)–mediated signaling. Mouse infant T cells showed increased sensitivity to low antigen doses, originating at the interface between T cells and antigen-bearing accessory cells—through actin-mediated mobilization of signaling molecules to the immune synapse. This enhanced signaling was also observed in human infant versus adult T cells. Our findings provide a mechanism for how infants control pathogen load and dissemination, which is important for designing developmentally targeted strategies for promoting immune responses at this vulnerable life stage.
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Affiliation(s)
- Puspa Thapa
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York NY 10032
| | - Rebecca S. Guyer
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York NY 10032
| | - Alexander Y. Yang
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York NY 10032
| | - Christopher A. Parks
- Columbia Center for Translational Immunology, Columbia University Irving Medical Center, New York, NY 10032
- Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032
| | - Todd M. Brusko
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32611
| | - Maigan Brusko
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32611
| | - Thomas J. Connors
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY 10032
| | - Donna L. Farber
- Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York NY 10032
- Department of Surgery, Columbia University Irving Medical Center, New York, NY 10032
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45
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Rogers D, Sood A, Wang H, van Beek JJP, Rademaker TJ, Artusa P, Schneider C, Shen C, Wong DC, Bhagrath A, Lebel MÈ, Condotta SA, Richer MJ, Martins AJ, Tsang JS, Barreiro LB, François P, Langlais D, Melichar HJ, Textor J, Mandl JN. Pre-existing chromatin accessibility and gene expression differences among naive CD4 + T cells influence effector potential. Cell Rep 2021; 37:110064. [PMID: 34852223 DOI: 10.1016/j.celrep.2021.110064] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/26/2021] [Accepted: 11/05/2021] [Indexed: 12/13/2022] Open
Abstract
CD4+ T cells have a remarkable potential to differentiate into diverse effector lineages following activation. Here, we probe the heterogeneity present among naive CD4+ T cells before encountering their cognate antigen to ask whether their effector potential is modulated by pre-existing transcriptional and chromatin landscape differences. Single-cell RNA sequencing shows that key drivers of variability are genes involved in T cell receptor (TCR) signaling. Using CD5 expression as a readout of the strength of tonic TCR interactions with self-peptide MHC, and sorting on the ends of this self-reactivity spectrum, we find that pre-existing transcriptional differences among naive CD4+ T cells impact follicular helper T (TFH) cell versus non-TFH effector lineage choice. Moreover, our data implicate TCR signal strength during thymic development in establishing differences in naive CD4+ T cell chromatin landscapes that ultimately shape their effector potential.
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Affiliation(s)
- Dakota Rogers
- Department of Physiology, McGill University, Montreal, QC, Canada; McGill University Research Centre on Complex Traits, Montreal, QC, Canada
| | - Aditi Sood
- Immunology-Oncology Unit, Maisonneuve-Rosemont Hospital Research Center, Montreal, QC, Canada; Department of Microbiology, Immunology, and Infectious Disease, Université de Montréal, Montreal, QC, Canada
| | - HanChen Wang
- Department of Physiology, McGill University, Montreal, QC, Canada; McGill University Research Centre on Complex Traits, Montreal, QC, Canada
| | - Jasper J P van Beek
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | | | - Patricio Artusa
- Department of Physiology, McGill University, Montreal, QC, Canada; McGill University Research Centre on Complex Traits, Montreal, QC, Canada
| | - Caitlin Schneider
- McGill University Research Centre on Complex Traits, Montreal, QC, Canada; Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Connie Shen
- McGill University Research Centre on Complex Traits, Montreal, QC, Canada; Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Dylan C Wong
- McGill University Research Centre on Complex Traits, Montreal, QC, Canada; Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Aanya Bhagrath
- Department of Physiology, McGill University, Montreal, QC, Canada; McGill University Research Centre on Complex Traits, Montreal, QC, Canada
| | - Marie-Ève Lebel
- Immunology-Oncology Unit, Maisonneuve-Rosemont Hospital Research Center, Montreal, QC, Canada
| | - Stephanie A Condotta
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Martin J Richer
- Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada
| | - Andrew J Martins
- Multiscale Systems Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - John S Tsang
- Multiscale Systems Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Luis B Barreiro
- Department of Medicine, Genetic Section, University of Chicago, Chicago, IL, USA
| | - Paul François
- Department of Physics, McGill University, Montreal, QC, Canada
| | - David Langlais
- McGill University Research Centre on Complex Traits, Montreal, QC, Canada; Department of Human Genetics, McGill University, Montreal, QC, Canada; McGill University Genome Centre, Montreal, QC, Canada
| | - Heather J Melichar
- Immunology-Oncology Unit, Maisonneuve-Rosemont Hospital Research Center, Montreal, QC, Canada; Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Johannes Textor
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Judith N Mandl
- Department of Physiology, McGill University, Montreal, QC, Canada; McGill University Research Centre on Complex Traits, Montreal, QC, Canada; Department of Microbiology and Immunology, McGill University, Montreal, QC, Canada.
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46
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Taylor RA, McRaven MD, Carias AM, Anderson MR, Matias E, Araínga M, Allen EJ, Rogers KA, Gupta S, Kulkarni V, Lakhashe S, Lorenzo-Redondo R, Thomas Y, Strickland A, Villinger FJ, Ruprecht RM, Hope TJ. Localization of infection in neonatal rhesus macaques after oral viral challenge. PLoS Pathog 2021; 17:e1009855. [PMID: 34793582 PMCID: PMC8639050 DOI: 10.1371/journal.ppat.1009855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 12/02/2021] [Accepted: 11/06/2021] [Indexed: 12/24/2022] Open
Abstract
Vertical transmission of human immunodeficiency virus (HIV) can occur in utero, during delivery, and through breastfeeding. We utilized Positron Emission Tomography (PET) imaging coupled with fluorescent microscopy of 64Cu-labeled photoactivatable-GFP-HIV (PA-GFP-BaL) to determine how HIV virions distribute and localize in neonatal rhesus macaques two and four hours after oral viral challenge. Our results show that by four hours after oral viral exposure, HIV virions localize to and penetrate the rectal mucosa. We also used a dual viral challenge with a non-replicative viral vector and a replication competent SHIV-1157ipd3N4 to examine viral transduction and dissemination at 96 hours. Our data show that while SHIV-1157ipd3N4 infection can be found in the oral cavity and upper gastrointestinal (GI) tract, the small and large intestine contained the largest number of infected cells. Moreover, we found that T cells were the biggest population of infected immune cells. Thus, thanks to these novel technologies, we are able to visualize and delineate of viral distribution and infection throughout the entire neonatal GI tract during acute viral infection. Approximately 1.8 million children are currently living with human immunodeficiency virus (HIV). While mother-to-child HIV transmission can occur in utero and during delivery, it most commonly occurs through breastfeeding, creating the need to understand how the virus moves throughout the body and infects the infant once breast milk is consumed. Here, we used multiple imaging techniques and PCR to determine how HIV distributes throughout the gastrointestinal tract after oral viral exposure and in which tissues and cell types become acutely infected. We found that HIV rapidly spreads throughout and penetrates the entire gastrointestinal tract as early as four hours after exposure. We also found that the intestine contained the largest number of infected cells at 96 hours and that most cells infected were T cells. Our study shows that these imaging technologies allow for the examination of viral distribution and infection in a rhesus macaque model.
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Affiliation(s)
- Roslyn A. Taylor
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Michael D. McRaven
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Ann M. Carias
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Meegan R. Anderson
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Edgar Matias
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Mariluz Araínga
- Department of Biology, New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
| | - Edward J. Allen
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Kenneth A. Rogers
- Department of Biology, New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
| | - Sandeep Gupta
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, San Antonio, Texas, United States of America
- Disease Intervention and Prevention, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Viraj Kulkarni
- Disease Intervention and Prevention, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Samir Lakhashe
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, San Antonio, Texas, United States of America
- Disease Intervention and Prevention, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Ramon Lorenzo-Redondo
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- Center for Pathogen Genomics and Microbial Evolution, Northwestern University Institute for Global Health, Chicago, Illinois, United States of America
| | - Yanique Thomas
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Amanda Strickland
- Disease Intervention and Prevention, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Francois J. Villinger
- Department of Biology, New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
| | - Ruth M. Ruprecht
- Department of Biology, New Iberia Research Center, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, San Antonio, Texas, United States of America
- Disease Intervention and Prevention, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Thomas J. Hope
- Department of Cell and Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- * E-mail:
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47
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Yee Mon KJ, Zhu H, Daly CWP, Vu LT, Smith NL, Patel R, Topham DJ, Scheible K, Jambo K, Le MTN, Rudd BD, Grimson A. MicroRNA-29 specifies age-related differences in the CD8+ T cell immune response. Cell Rep 2021; 37:109969. [PMID: 34758312 DOI: 10.1016/j.celrep.2021.109969] [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: 03/03/2021] [Revised: 08/09/2021] [Accepted: 10/19/2021] [Indexed: 11/27/2022] Open
Abstract
MicroRNAs (miRNAs) have emerged as critical regulators of cell fate in the CD8+ T cell response to infection. Although there are several examples of miRNAs acting on effector CD8+ T cells after infection, it is unclear whether differential expression of one or more miRNAs in the naive state is consequential in altering their long-term trajectory. To answer this question, we examine the role of miR-29 in neonatal and adult CD8+ T cells, which express different amounts of miR-29 only prior to infection and adopt profoundly different fates after immune challenge. We find that manipulation of miR-29 expression in the naive state is sufficient for age-adjusting the phenotype and function of CD8+ T cells, including their regulatory landscapes and long-term differentiation trajectories after infection. Thus, miR-29 acts as a developmental switch by controlling the balance between a rapid effector response in neonates and the generation of long-lived memory in adults.
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Affiliation(s)
- Kristel J Yee Mon
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Hongya Zhu
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Ciarán W P Daly
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Luyen T Vu
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA; Department of Pharmacology and Institute for Digital Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Norah L Smith
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA
| | - Ravi Patel
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - David J Topham
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY 14642, USA
| | - Kristin Scheible
- Department of Pediatrics, Division of Neonatology, University of Rochester, Rochester, NY 14642, USA
| | - Kondwani Jambo
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK; Malawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi
| | - Minh T N Le
- Department of Pharmacology and Institute for Digital Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Brian D Rudd
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA.
| | - Andrew Grimson
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.
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48
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Foo SS, Cambou MC, Mok T, Fajardo VM, Jung KL, Fuller T, Chen W, Kerin T, Mei J, Bhattacharya D, Choi Y, Wu X, Xia T, Shin WJ, Cranston J, Aldrovandi G, Tobin N, Contreras D, Ibarrondo FJ, Yang O, Yang S, Garner O, Cortado R, Bryson Y, Janzen C, Ghosh S, Devaskar S, Asilnejad B, Moreira ME, Vasconcelos Z, Soni PR, Gibson LC, Brasil P, Comhair SA, Arumugaswami V, Erzurum SC, Rao R, Jung JU, Nielsen-Saines K. The systemic inflammatory landscape of COVID-19 in pregnancy: Extensive serum proteomic profiling of mother-infant dyads with in utero SARS-CoV-2. Cell Rep Med 2021; 2:100453. [PMID: 34723226 PMCID: PMC8549189 DOI: 10.1016/j.xcrm.2021.100453] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 08/30/2021] [Accepted: 10/21/2021] [Indexed: 12/22/2022]
Abstract
While pregnancy increases the risk for severe COVID-19, the clinical and immunological implications of COVID-19 on maternal-fetal health remain unknown. Here, we present the clinical and immunological landscapes of 93 COVID-19 mothers and 45 of their SARS-CoV-2-exposed infants through comprehensive serum proteomics profiling for >1,400 cytokines of their peripheral and cord blood specimens. Prenatal SARS-CoV-2 infection triggers NF-κB-dependent proinflammatory immune activation. Pregnant women with severe COVID-19 show increased inflammation and unique IFN-λ antiviral signaling, with elevated levels of IFNL1 and IFNLR1. Furthermore, SARS-CoV-2 infection re-shapes maternal immunity at delivery, altering the expression of pregnancy complication-associated cytokines, inducing MMP7, MDK, and ESM1 and reducing BGN and CD209. Finally, COVID-19-exposed infants exhibit induction of T cell-associated cytokines (IL33, NFATC3, and CCL21), while some undergo IL-1β/IL-18/CASP1 axis-driven neonatal respiratory distress despite birth at term. Our findings demonstrate COVID-19-induced immune rewiring in both mothers and neonates, warranting long-term clinical follow-up to mitigate potential health risks.
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Affiliation(s)
- Suan-Sin Foo
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Mary Catherine Cambou
- Department of Medicine, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Thalia Mok
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Viviana M. Fajardo
- Department of Pediatrics, Division of Neonatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kyle L. Jung
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Trevon Fuller
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Manguinhos, Rio de Janeiro 21040-360, Brazil
| | - Weiqiang Chen
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Tara Kerin
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jenny Mei
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Debika Bhattacharya
- Department of Medicine, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Younho Choi
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Xin Wu
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Tian Xia
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Woo-Jin Shin
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jessica Cranston
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Grace Aldrovandi
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Nicole Tobin
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Deisy Contreras
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Francisco J. Ibarrondo
- Department of Medicine, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Otto Yang
- Department of Medicine, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shangxin Yang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Omai Garner
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ruth Cortado
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yvonne Bryson
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Carla Janzen
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shubhamoy Ghosh
- Department of Pediatrics, Division of Neonatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sherin Devaskar
- Department of Pediatrics, Division of Neonatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Brenda Asilnejad
- Georgetown University School of Medicine, Washington, DC 20007, USA
| | | | - Zilton Vasconcelos
- Instituto Fernades Figueira, Fiocruz, Flamengo, Rio de Janeiro 20140-360, Brazil
| | - Priya R. Soni
- Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90049, USA
| | - L. Caroline Gibson
- Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, CA 90049, USA
| | - Patricia Brasil
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Manguinhos, Rio de Janeiro 21040-360, Brazil
| | - Suzy A.A. Comhair
- Respiratory Institute, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Vaithilingaraja Arumugaswami
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Serpil C. Erzurum
- Respiratory Institute, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Rashmi Rao
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jae U. Jung
- Department of Cancer Biology, Infection Biology Program, and Global Center for Pathogen Research and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA,Corresponding author
| | - Karin Nielsen-Saines
- Department of Pediatrics, Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA,Corresponding author
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49
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Fortmann I, Dammann MT, Siller B, Humberg A, Demmert M, Tüshaus L, Lindert J, van Zandbergen V, Pagel J, Rupp J, Herting E, Härtel C. Infants Younger Than 90 Days Admitted for Late-Onset Sepsis Display a Reduced Abundance of Regulatory T Cells. Front Immunol 2021; 12:666447. [PMID: 34512621 PMCID: PMC8430331 DOI: 10.3389/fimmu.2021.666447] [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: 02/16/2021] [Accepted: 08/03/2021] [Indexed: 11/29/2022] Open
Abstract
Objective To provide epidemiological data of infants < 90 days of age with suspected late-onset sepsis (LOS) and evaluate distinct immunological specificities. We hypothesized that previously healthy infants < 3 months of age with sepsis have a yet undefined immunological predisposition; e.g. differences in lymphocyte subsets including regulatory T cells. Methods We performed an exploratory, single center study between January 1st, 2019 and June 1st, 2021. Routine diagnostics included conventional culture (blood, cerebrospinal fluid, urine), PCR and inflammatory markers in infants < 90 days of age with suspected sepsis. We additionally analyzed lymphocyte subsets and CD4+ CD25+ forkhead box protein (FoxP3)+ Tregs at admission for sepsis workup as compared to age-matched controls. Results A convenience sample cohort of n= 51 infants with sepsis workup was enrolled. Invasive bacterial infection (IBI) was diagnosed in 25 (49.0%) patients including two infants with a rhinovirus co-infection and viral infection in 14 (27.5%) neonates. No infectious cause was found in 12 cases. Infants with suspected LOS displayed a decreased abundance of CD4+ FoxP3+ T cells as compared to controls, which was most pronounced in the subgroup of infants with IBI. We also noticed elevated HLA-DR-positive CD3+ cells in infants with LOS and a higher CD4/CD8-ratio in infants with viral infection as compared to healthy controls. Infants with viral infections had a higher number of natural killer cells as compared to infants with IBI. Conclusion Our exploratory data support the concept of a potential immaturity state and failed immune tolerance development for young infants with LOS. Future large-scale studies are needed to elucidate pre-sepsis conditions and to target the microbiome-immunity interplay as a potential risk pattern.
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Affiliation(s)
- Ingmar Fortmann
- Department of Pediatrics, University of Lübeck, Lübeck, Germany.,German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Lübeck, Germany
| | | | - Bastian Siller
- Department of Pediatrics, University of Lübeck, Lübeck, Germany
| | | | - Martin Demmert
- Department of Pediatrics, University of Lübeck, Lübeck, Germany.,German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Lübeck, Germany
| | - Ludger Tüshaus
- Department of Pediatric Surgery, University of Lübeck, Lübeck, Germany
| | - Judith Lindert
- Department of Pediatric Surgery, University of Lübeck, Lübeck, Germany
| | | | - Julia Pagel
- Department of Pediatrics, University of Lübeck, Lübeck, Germany.,German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Lübeck, Germany
| | - Jan Rupp
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Lübeck, Germany.,Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
| | - Egbert Herting
- Department of Pediatrics, University of Lübeck, Lübeck, Germany
| | - Christoph Härtel
- Department of Pediatrics, University Hospital of Würzburg, Würzburg, Germany
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50
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Peterson LS, Hedou J, Ganio EA, Stelzer IA, Feyaerts D, Harbert E, Adusumelli Y, Ando K, Tsai ES, Tsai AS, Han X, Ringle M, Houghteling P, Reiss JD, Lewis DB, Winn VD, Angst MS, Aghaeepour N, Stevenson DK, Gaudilliere B. Single-Cell Analysis of the Neonatal Immune System Across the Gestational Age Continuum. Front Immunol 2021; 12:714090. [PMID: 34497610 PMCID: PMC8420969 DOI: 10.3389/fimmu.2021.714090] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/02/2021] [Indexed: 12/21/2022] Open
Abstract
Although most causes of death and morbidity in premature infants are related to immune maladaptation, the premature immune system remains poorly understood. We provide a comprehensive single-cell depiction of the neonatal immune system at birth across the spectrum of viable gestational age (GA), ranging from 25 weeks to term. A mass cytometry immunoassay interrogated all major immune cell subsets, including signaling activity and responsiveness to stimulation. An elastic net model described the relationship between GA and immunome (R=0.85, p=8.75e-14), and unsupervised clustering highlighted previously unrecognized GA-dependent immune dynamics, including decreasing basal MAP-kinase/NFκB signaling in antigen presenting cells; increasing responsiveness of cytotoxic lymphocytes to interferon-α; and decreasing frequency of regulatory and invariant T cells, including NKT-like cells and CD8+CD161+ T cells. Knowledge gained from the analysis of the neonatal immune landscape across GA provides a mechanistic framework to understand the unique susceptibility of preterm infants to both hyper-inflammatory diseases and infections.
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Affiliation(s)
- Laura S Peterson
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Julien Hedou
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Edward A Ganio
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Ina A Stelzer
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Dorien Feyaerts
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Eliza Harbert
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Yamini Adusumelli
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Kazuo Ando
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Eileen S Tsai
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Amy S Tsai
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Xiaoyuan Han
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Megan Ringle
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Pearl Houghteling
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Jonathan D Reiss
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - David B Lewis
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Virginia D Winn
- Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA, United States
| | - Martin S Angst
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Nima Aghaeepour
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States.,Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States.,Department of Biomedical Data Sciences, Stanford University School of Medicine, Stanford, CA, United States
| | - David K Stevenson
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States
| | - Brice Gaudilliere
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States.,Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States
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