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Sojati J, Parks OB, Zhang Y, Walters S, Lan J, Eddens T, Lou D, Fan L, Chen K, Oury TD, Williams JV. IFN-λ drives distinct lung immune landscape changes and antiviral responses in human metapneumovirus infection. mBio 2024; 15:e0055024. [PMID: 38530032 PMCID: PMC11077986 DOI: 10.1128/mbio.00550-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 02/29/2024] [Indexed: 03/27/2024] Open
Abstract
Human metapneumovirus (HMPV) is a primary cause of acute respiratory infection, yet there are no approved vaccines or antiviral therapies for HMPV. Early host responses to HMPV are poorly characterized, and further understanding could identify important antiviral pathways. Type III interferon (IFN-λ) displays potent antiviral activity against respiratory viruses and is being investigated for therapeutic use. However, its role in HMPV infection remains largely unknown. Here, we show that IFN-λ is highly upregulated during HMPV infection in vitro in human and mouse airway epithelial cells and in vivo in mice. We found through several immunological and molecular assays that type II alveolar cells are the primary producers of IFN-λ. Using mouse models, we show that IFN-λ limits lung HMPV replication and restricts virus spread from upper to lower airways but does not contribute to clinical disease. Moreover, we show that IFN-λ signaling is predominantly mediated by CD45- non-immune cells. Mice lacking IFN-λ signaling showed diminished loss of ciliated epithelial cells and decreased recruitment of lung macrophages in early HMPV infection along with higher inflammatory cytokine and interferon-stimulated gene expression, suggesting that IFN-λ may maintain immunomodulatory responses. Administration of IFN-λ for prophylaxis or post-infection treatment in mice reduced viral load without inflammation-driven weight loss or clinical disease. These data offer clinical promise for IFN-λ in HMPV treatment. IMPORTANCE Human metapneumovirus (HMPV) is a common respiratory pathogen and often contributes to severe disease, particularly in children, immunocompromised people, and the elderly. There are currently no licensed HMPV antiviral treatments or vaccines. Here, we report novel roles of host factor IFN-λ in HMPV disease that highlight therapeutic potential. We show that IFN-λ promotes lung antiviral responses by restricting lung HMPV replication and spread from upper to lower airways but does so without inducing lung immunopathology. Our data uncover recruitment of lung macrophages, regulation of ciliated epithelial cells, and modulation of inflammatory cytokines and interferon-stimulated genes as likely contributors. Moreover, we found these roles to be distinct and non-redundant, as they are not observed with knockout of, or treatment with, type I IFN. These data elucidate unique antiviral functions of IFN-λ and suggest IFN-λ augmentation as a promising therapeutic for treating HMPV disease and promoting effective vaccine responses.
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Affiliation(s)
- Jorna Sojati
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Olivia B. Parks
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Yu Zhang
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Sara Walters
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Jie Lan
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Taylor Eddens
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Dequan Lou
- Department of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Li Fan
- Department of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Kong Chen
- Department of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Tim D. Oury
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - John V. Williams
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Microbiology & Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Institute for Infection, Immunity, and Inflammation in Children, UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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2
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Eddens T, Parks OB, Lou D, Fan L, Sojati J, Ramsey MJ, Schmitt L, Salgado CM, Reyes-Mugica M, Evans A, Zou HM, Oury TD, Byersdorfer C, Chen K, Williams JV. Monocyte Production of C1q Potentiates CD8 + T Cell Function Following Respiratory Viral Infection. Am J Respir Cell Mol Biol 2024. [PMID: 38696270 DOI: 10.1165/rcmb.2024-0004oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 05/01/2024] [Indexed: 05/04/2024] Open
Abstract
Respiratory viral infections remain a leading cause of morbidity and mortality. Using a murine model of human metapneumovirus (HMPV), we identified recruitment of a C1q-expressing inflammatory monocyte population concomitant with viral clearance by adaptive immune cells. Genetic ablation of C1q led to reduced CD8+ T cell function. Production of C1q by a myeloid lineage was necessary to enhance CD8+ T cell function. Activated and dividing CD8+ T cells expressed a C1q receptor, gC1qR. Perturbation of gC1qR signaling led to altered CD8+ T cell IFN-γ production, metabolic capacity, and cell proliferation. Autopsy specimens from fatal respiratory viral infections in children demonstrated diffuse production of C1q by an interstitial population. Humans with severe COVID-19 infection also demonstrated upregulation of gC1qR on activated and rapidly dividing CD8+ T cells. Collectively, these studies implicate C1q production from monocytes as a critical regulator of CD8+ T cell function following respiratory viral infection. This article is open access and distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives License 4.0 (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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Affiliation(s)
- Taylor Eddens
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Olivia B Parks
- University of Pittsburgh School of Medicine, 12317, Pediatrics, Pittsburgh, Pennsylvania, United States
| | - Dequan Lou
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Li Fan
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Jorna Sojati
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Manda Jo Ramsey
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Lori Schmitt
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Claudia M Salgado
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Miguel Reyes-Mugica
- Children's Hospital of Pittsburgh of UPMC, 6619, Department of Pathology, Pittsburgh, Pennsylvania, United States
| | - Alysa Evans
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Henry M Zou
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Tim D Oury
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Craig Byersdorfer
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - Kong Chen
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States
| | - John V Williams
- University of Pittsburgh School of Medicine, 12317, Pittsburgh, Pennsylvania, United States;
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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:S1933-0219(23)00100-9. [PMID: 38176655 DOI: 10.1016/j.mucimm.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [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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Parks OB, Antos D, Eddens T, Walters S, Johnson M, Oury TD, Gottschalk RA, Erickson JJ, Williams JV. PD-1 Impairs CD8+ T Cell Granzyme B Production in Aged Mice during Acute Viral Respiratory Infection. Immunohorizons 2023; 7:771-787. [PMID: 38015461 PMCID: PMC10696419 DOI: 10.4049/immunohorizons.2300094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 11/01/2023] [Indexed: 11/29/2023] Open
Abstract
CD8+ T cell dysfunction contributes to severe respiratory viral infection outcomes in older adults. CD8+ T cells are the primary cell type responsible for viral clearance. With increasing age, CD8+ T cell function declines in conjunction with an accumulation of cytotoxic tissue-resident memory (TRM) CD8+ T cells. We sought to elucidate the role of PD-1 signaling on aged CD8+ T cell function and accumulation of CD8+ TRM cells during acute viral respiratory tract infection, given the importance of PD-1 regulating CD8+ T cells during acute and chronic infections. PD-1 blockade or genetic ablation in aged mice yielded improved CD8+ T cell granzyme B production comparable to that in young mice during human metapneumovirus and influenza viral infections. Syngeneic transplant and adoptive transfer strategies revealed that improved granzyme B production in aged Pdcd1-/- CD8+ T cells was primarily cell intrinsic because aged wild-type CD8+ T cells did not have increased granzyme B production when transplanted into a young host. PD-1 signaling promoted accumulation of cytotoxic CD8+ TRM cells in aged mice. PD-1 blockade of aged mice during rechallenge infection resulted in improved clinical outcomes that paralleled reduced accumulation of CD8+ TRM cells. These findings suggest that PD-1 signaling impaired CD8+ T cell granzyme B production and contributed to CD8+ TRM cell accumulation in the aged lung. These findings have implications for future research investigating PD-1 checkpoint inhibitors as a potential therapeutic option for elderly patients with severe respiratory viral infections.
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Affiliation(s)
- Olivia B. Parks
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Danielle Antos
- Division of Pulmonology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Taylor Eddens
- Division of Allergy/Immunology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sara Walters
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Monika Johnson
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Tim D. Oury
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Rachel A. Gottschalk
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - John J. Erickson
- Division of Neonatology and Pulmonary Biology, Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH
| | - John V. Williams
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
- Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, PA
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5
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Parks OB, Eddens T, Sojati J, Lan J, Zhang Y, Oury TD, Ramsey M, Erickson JJ, Byersdorfer CA, Williams JV. Terminally exhausted CD8 + T cells contribute to age-dependent severity of respiratory virus infection. Immun Ageing 2023; 20:40. [PMID: 37528458 PMCID: PMC10391960 DOI: 10.1186/s12979-023-00365-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 07/18/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND Lower respiratory infections are a leading cause of severe morbidity and mortality among older adults. Despite ubiquitous exposure to common respiratory pathogens throughout life and near universal seropositivity, antibodies fail to effectively protect the elderly. Therefore, we hypothesized that severe respiratory illness in the elderly is due to deficient CD8+ T cell responses. RESULTS Here, we establish an aged mouse model of human metapneumovirus infection (HMPV) wherein aged C57BL/6 mice exhibit worsened weight loss, clinical disease, lung pathology and delayed viral clearance compared to young adult mice. Aged mice generate fewer lung-infiltrating HMPV epitope-specific CD8+ T cells. Those that do expand demonstrate higher expression of PD-1 and other inhibitory receptors and are functionally impaired. Transplant of aged T cells into young mice and vice versa, as well as adoptive transfer of young versus aged CD8+ T cells into Rag1-/- recipients, recapitulates the HMPV aged phenotype, suggesting a cell-intrinsic age-associated defect. HMPV-specific aged CD8+ T cells exhibit a terminally exhausted TCF1/7- TOX+ EOMES+ phenotype. We confirmed similar terminal exhaustion of aged CD8+ T cells during influenza viral infection. CONCLUSIONS This study identifies terminal CD8+ T cell exhaustion as a mechanism of severe disease from respiratory viral infections in the elderly.
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Affiliation(s)
- Olivia B Parks
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Taylor Eddens
- Department of Pediatrics, Division of Allergy/Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jorna Sojati
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jie Lan
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Yu Zhang
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Tim D Oury
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Manda Ramsey
- Department of Pediatrics, Division of Blood and Marrow Transplant and Cellular Therapies, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - John J Erickson
- Department of Pediatrics, Division of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Craig A Byersdorfer
- Department of Pediatrics, Division of Blood and Marrow Transplant and Cellular Therapies, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - John V Williams
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
- Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, PA, USA.
- University of Pittsburgh, Rangos Research Building, 4401 Penn Avenue, Pittsburgh, PA, 15224, USA.
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6
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Freeman KG, Robotham AC, Parks OB, Abad L, Jacobs-Sera D, Lauer MJ, Podgorski JM, Zhang Y, Williams JV, White SJ, Kelly JF, Hatfull GF, Pope WH. Virion glycosylation influences mycobacteriophage immune recognition. Cell Host Microbe 2023; 31:1216-1231.e6. [PMID: 37329881 PMCID: PMC10527164 DOI: 10.1016/j.chom.2023.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/19/2023] [Accepted: 05/25/2023] [Indexed: 06/19/2023]
Abstract
Glycosylation of eukaryotic virus particles is common and influences their uptake, trafficking, and immune recognition. In contrast, glycosylation of bacteriophage particles has not been reported; phage virions typically do not enter the cytoplasm upon infection, and they do not generally inhabit eukaryotic systems. We show here that several genomically distinct phages of Mycobacteria are modified with glycans attached to the C terminus of capsid and tail tube protein subunits. These O-linked glycans influence antibody production and recognition, shielding viral particles from antibody binding and reducing production of neutralizing antibodies. Glycosylation is mediated by phage-encoded glycosyltransferases, and genomic analysis suggests that they are relatively common among mycobacteriophages. Putative glycosyltransferases are also encoded by some Gordonia and Streptomyces phages, but there is little evidence of glycosylation among the broader phage population. The immune response to glycosylated phage virions in mice suggests that glycosylation may be an advantageous property for phage therapy of Mycobacterium infections.
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Affiliation(s)
- Krista G Freeman
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Anna C Robotham
- Human Health Therapeutics, National Research Council of Canada, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
| | - Olivia B Parks
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Pediatrics and Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - Lawrence Abad
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Deborah Jacobs-Sera
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Michael J Lauer
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Jennifer M Podgorski
- Biology/Physics Building, Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269-3125, USA
| | - Yu Zhang
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Pediatrics and Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - John V Williams
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA 15260, USA; Department of Pediatrics and Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - Simon J White
- Biology/Physics Building, Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269-3125, USA
| | - John F Kelly
- Human Health Therapeutics, National Research Council of Canada, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada
| | - Graham F Hatfull
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA.
| | - Welkin H Pope
- Science Department, Chatham University, Pittsburgh, PA 15232, USA
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7
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Eddens T, Parks OB, Lou D, Fan L, Sojati J, Ramsey MJ, Schmitt L, Salgado CM, Reyes-Mugica M, Oury TD, Byersdorfer C, Chen K, Williams JV. Monocyte production of C1q potentiates CD8 + T cell effector function following respiratory viral infection. bioRxiv 2023:2023.06.04.543430. [PMID: 37333212 PMCID: PMC10274684 DOI: 10.1101/2023.06.04.543430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Respiratory viral infections remain a leading cause of morbidity and mortality. Using a murine model of human metapneumovirus (HMPV), we identified recruitment of a C1q-producing inflammatory monocyte population concomitant with viral clearance by adaptive immune cells. Genetic ablation of C1q led to reduced CD8 + T cell function. Production of C1q by a myeloid lineage was sufficient to enhance CD8 + T cell function. Activated and dividing CD8 + T cells expressed a putative C1q receptor, gC1qR. Perturbation of gC1qR signaling led to altered CD8 + T cell IFN-γ production and metabolic capacity. Autopsy specimens from fatal respiratory viral infections in children demonstrated diffuse production of C1q by an interstitial population. Humans with severe COVID-19 infection also demonstrated upregulation of gC1qR on activated and rapidly dividing CD8 + T cells. Collectively, these studies implicate C1q production from monocytes as a critical regulator of CD8 + T cell function following respiratory viral infection.
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8
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Parks OB, Eddens T, Zhang Y, Oury TD, McElroy A, Williams JV. Human Metapneumovirus Reinfection in Aged Mice Recapitulates Increased Disease Severity in Elderly Humans Infected with Human Metapneumovirus. Immunohorizons 2023; 7:398-411. [PMID: 37261717 PMCID: PMC10321313 DOI: 10.4049/immunohorizons.2300026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 06/02/2023] Open
Abstract
Human metapneumovirus (HMPV) is a leading cause of respiratory infection in adults >65 y. Nearly all children worldwide are seropositive for HMPV by age 5 y, but reinfections occur throughout life, and there is no licensed vaccine. Recurrent HMPV infection is mild and self-resolving in immunocompetent individuals. However, elderly individuals develop severe respiratory disease on HMPV reinfection that leads to a high risk for morbidity and mortality. In this study, we developed a mouse model to mirror HMPV reinfection in elderly humans. C57BL/6J mice were infected with HMPV at 6-7 wk old, aged in-house, and rechallenged with high-dose virus at 70 wk. Aged rechallenged mice had profound weight loss similar to primary infected mice, increased lung histopathology, and accumulated cytotoxic CD8+CD44+CD62L-CD69+CD103+ memory cells despite having undetectable lung virus titer. When aged mice 14 mo postinfection (p.i.) or young mice 5 wk p.i. were restimulated with HMPV cognate Ag to mimic epitope vaccination, aged mice had an impaired CD8+ memory response. Convalescent serum transfer from young naive or 5 wk p.i. mice into aged mice on day of infection did not protect. Aged mice vaccinated with UV-inactivated HMPV also exhibited diminished protection and poor CD8+ memory response compared with young mice. These results suggest aged individuals with HMPV reinfection have a dysregulated CD8+ memory T cell response that fails to protect and exacerbates disease. Moreover, aged mice exhibited a poor memory response to either epitope peptide or UV-inactivated vaccination, suggesting that aged CD8+ T cell dysfunction presents a barrier to effective vaccination strategies.
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Affiliation(s)
- Olivia B. Parks
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Taylor Eddens
- Department of Pediatrics, Division of Allergy/Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Yu Zhang
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Tim D. Oury
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Anita McElroy
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA
- Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, PA
- Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - John V. Williams
- Department of Pediatrics, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA
- Institute for Infection, Inflammation, and Immunity in Children (i4Kids), Pittsburgh, PA
- Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, PA
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9
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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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10
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Lin X, Gaudino SJ, Jang KK, Bahadur T, Singh A, Banerjee A, Beaupre M, Chu T, Wong HT, Kim CK, Kempen C, Axelrad J, Huang H, Khalid S, Shah V, Eskiocak O, Parks OB, Berisha A, McAleer JP, Good M, Hoshino M, Blumberg R, Bialkowska AB, Gaffen SL, Kolls JK, Yang VW, Beyaz S, Cadwell K, Kumar P. IL-17RA-signaling in Lgr5 + intestinal stem cells induces expression of transcription factor ATOH1 to promote secretory cell lineage commitment. Immunity 2022; 55:237-253.e8. [PMID: 35081371 PMCID: PMC8895883 DOI: 10.1016/j.immuni.2021.12.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 07/06/2021] [Accepted: 12/20/2021] [Indexed: 12/14/2022]
Abstract
The Th17 cell-lineage-defining cytokine IL-17A contributes to host defense and inflammatory disease by coordinating multicellular immune responses. The IL-17 receptor (IL-17RA) is expressed by diverse intestinal cell types, and therapies targeting IL-17A induce adverse intestinal events, suggesting additional tissue-specific functions. Here, we used multiple conditional deletion models to identify a role for IL-17A in secretory epithelial cell differentiation in the gut. Paneth, tuft, goblet, and enteroendocrine cell numbers were dependent on IL-17A-mediated induction of the transcription factor ATOH1 in Lgr5+ intestinal epithelial stem cells. Although dispensable at steady state, IL-17RA signaling in ATOH1+ cells was required to regenerate secretory cells following injury. Finally, IL-17A stimulation of human-derived intestinal organoids that were locked into a cystic immature state induced ATOH1 expression and rescued secretory cell differentiation. Our data suggest that the cross talk between immune cells and stem cells regulates secretory cell lineage commitment and the integrity of the mucosa.
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Affiliation(s)
- Xun Lin
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Stephen J Gaudino
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Kyung Ku Jang
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University Grossman School of Medicine, New York, NY, USA
| | - Tej Bahadur
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Ankita Singh
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Anirban Banerjee
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Michael Beaupre
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Timothy Chu
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Hoi Tong Wong
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Chang-Kyung Kim
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Cody Kempen
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Jordan Axelrad
- Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Huakang Huang
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Saba Khalid
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Vyom Shah
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Onur Eskiocak
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Olivia B Parks
- University of Pittsburgh School of Medicine, Medical Scientist Training Program, Pittsburgh, PA 15213, USA
| | - Artan Berisha
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Jeremy P McAleer
- Department of Pharmaceutical Science, Marshall University School of Pharmacy, Huntington, WV 25701, USA
| | - Misty Good
- Washington University School of Medicine, Department of Pediatrics, Division of Newborn Medicine, St. Louis Children's Hospital, St. Louis, MO 63110, USA
| | - Miko Hoshino
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
| | - Richard Blumberg
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Agnieszka B Bialkowska
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Jay K Kolls
- Center for Translational Research in Infection and Inflammation, Tulane School of Medicine, New Orleans, LA 70112, USA
| | - Vincent W Yang
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Semir Beyaz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Ken Cadwell
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University Grossman School of Medicine, New York, NY, USA; Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA; Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA.
| | - Pawan Kumar
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA.
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11
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Mihi B, Gong Q, Nolan LS, Gale SE, Goree M, Hu E, Lanik WE, Rimer JM, Liu V, Parks OB, Lewis AN, Agrawal P, Laury ML, Kumar P, Huang E, Bidani SS, Luke CJ, Kolls JK, Good M. Interleukin-22 signaling attenuates necrotizing enterocolitis by promoting epithelial cell regeneration. Cell Rep Med 2021; 2:100320. [PMID: 34195684 PMCID: PMC8233697 DOI: 10.1016/j.xcrm.2021.100320] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 03/17/2021] [Accepted: 05/20/2021] [Indexed: 12/27/2022]
Abstract
Necrotizing enterocolitis (NEC) is a deadly intestinal inflammatory disorder that primarily affects premature infants and lacks adequate therapeutics. Interleukin (IL)-22 plays a critical role in gut barrier maintenance, promoting epithelial regeneration, and controlling intestinal inflammation in adult animal models. However, the importance of IL-22 signaling in neonates during NEC remains unknown. We investigated the role of IL-22 in the neonatal intestine under homeostatic and inflammatory conditions by using a mouse model of NEC. Our data reveal that Il22 expression in neonatal murine intestine is negligible until weaning, and both human and murine neonates lack IL-22 production during NEC. Mice deficient in IL-22 or lacking the IL-22 receptor in the intestine display a similar susceptibility to NEC, consistent with the lack of endogenous IL-22 during development. Strikingly, treatment with recombinant IL-22 during NEC substantially reduces inflammation and enhances epithelial regeneration. These findings may provide a new therapeutic strategy to attenuate NEC.
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MESH Headings
- Animals
- Animals, Newborn
- Chemokine CXCL1/genetics
- Chemokine CXCL1/immunology
- Chemokine CXCL2/genetics
- Chemokine CXCL2/immunology
- Disease Models, Animal
- Enterocolitis, Necrotizing/drug therapy
- Enterocolitis, Necrotizing/immunology
- Enterocolitis, Necrotizing/microbiology
- Enterocolitis, Necrotizing/pathology
- Gastrointestinal Microbiome/immunology
- Gene Expression Regulation, Developmental
- Humans
- Infant, Newborn
- Infant, Newborn, Diseases/immunology
- Infant, Newborn, Diseases/microbiology
- Infant, Newborn, Diseases/pathology
- Infant, Premature
- Interleukin-1beta/genetics
- Interleukin-1beta/immunology
- Interleukins/genetics
- Interleukins/immunology
- Intestinal Mucosa/immunology
- Intestinal Mucosa/metabolism
- Intestinal Mucosa/microbiology
- Mice
- Mice, Knockout
- Protein Isoforms/genetics
- Protein Isoforms/immunology
- Receptors, Interleukin/genetics
- Receptors, Interleukin/immunology
- Recombinant Proteins/pharmacology
- Regeneration/genetics
- Regeneration/immunology
- Signal Transduction
- Weaning
- Interleukin-22
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Affiliation(s)
- Belgacem Mihi
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Qingqing Gong
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lila S. Nolan
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sarah E. Gale
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Martin Goree
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Elise Hu
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Wyatt E. Lanik
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jamie M. Rimer
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Victoria Liu
- Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Olivia B. Parks
- University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Angela N. Lewis
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Pranjal Agrawal
- Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Marie L. Laury
- Genome Technology Access Center, McDonnell Genome Institute, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Pawan Kumar
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, NY, USA
| | - Elizabeth Huang
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Shay S. Bidani
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Cliff J. Luke
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jay K. Kolls
- Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, USA
| | - Misty Good
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
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12
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Parks OB, Kothamasu KS, Ziemba MJ, Benner M, Cristinziano M, Kantz S, Leger D, Li J, Patel D, Rabuse W, Sutton S, Wilson A, Baireddy P, Kamat AA, Callas MJ, Borges MJ, Scalia MN, Klenk E, Scherer G, Martinez MM, Grubb SR, Kaufmann N, Pruitt JN, Keiser CN. Exposure to cuticular bacteria can alter host behavior in a funnel-weaving spider. Curr Zool 2018; 64:721-726. [PMID: 30538731 PMCID: PMC6280096 DOI: 10.1093/cz/zox064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 10/27/2017] [Indexed: 12/05/2022] Open
Abstract
Contact with environmental microbes are arguably the most common species interaction in which any animal participates. Studies have noted diverse relationships between hosts and resident microbes, which can have strong consequences for host development, physiology, and behavior. Many of these studies focus specifically on pathogens or beneficial microbes, while the benign microbes, of which the majority of bacteria could be described, are often ignored. Here, we explore the nature of the relationships between the grass spider Agelenopsis pennsylvanica and bacteria collected from their cuticles in situ. First, using culture-based methods, we identified a portion of the cuticular bacterial communities that are naturally associated with these spiders. Then, we topically exposed spiders to a subset of these bacterial monocultures to estimate how bacterial exposure may alter 3 host behavioral traits: boldness, aggressiveness, and activity level. We conducted these behavioral assays 3 times before and 3 times after topical application, and compared the changes observed in each trait with spiders that were exposed to a sterile control treatment. We identified 9 species of bacteria from the cuticles of 36 spiders and exposed groups of 20 spiders to 1 of 4 species of cuticular bacteria. We found that exposure to Dermacoccus nishinomiyaensis and Staphylococcus saprophyticus was associated with a 10-fold decrease in the foraging aggressiveness of spiders toward prey in their web. Since bacterial exposure did not have survival consequences for hosts, these data suggest that interactions with cuticular bacteria, even non-pathogenic bacteria, could alter host behavior.
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Affiliation(s)
- Olivia B Parks
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Krishna S Kothamasu
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Michael J Ziemba
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Morgan Benner
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Madison Cristinziano
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Serena Kantz
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Daniel Leger
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - John Li
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Devanshi Patel
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - William Rabuse
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Samantha Sutton
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Amandi Wilson
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Priyanka Baireddy
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Aditi A Kamat
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mariah J Callas
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Matthew J Borges
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Marysa N Scalia
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Emily Klenk
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Gabrielle Scherer
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Maria M Martinez
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sarah R Grubb
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nancy Kaufmann
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jonathan N Pruitt
- Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, USA
| | - Carl N Keiser
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA.,Rice University Academy of Fellows, Rice University, Houston, TX, USA.,Department of BioSciences, Rice University, Houston, TX, USA
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13
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Parks OB, Kothamasu KS, Ziemba MJ, Benner M, Cristinziano M, Kantz S, Leger D, Li J, Patel D, Rabuse W, Sutton S, Wilson A, Baireddy P, Kamat AA, Callas MJ, Borges MJ, Scalia MN, Klenk E, Scherer G, Martinez MM, Grubb SR, Kaufmann N, Pruitt JN, Keiser CN. Erratum: Exposure to cuticular bacteria can alter host behavior in a funnel-weaving spider. Curr Zool 2018; 64:405. [PMID: 30403200 PMCID: PMC6007746 DOI: 10.1093/cz/zoy013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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14
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Parks OB, Pociask DA, Hodzic Z, Kolls JK, Good M. Interleukin-22 Signaling in the Regulation of Intestinal Health and Disease. Front Cell Dev Biol 2016; 3:85. [PMID: 26793707 PMCID: PMC4710696 DOI: 10.3389/fcell.2015.00085] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 12/14/2015] [Indexed: 12/25/2022] Open
Abstract
Interleukin (IL)-22 is a member of the IL-10 family of cytokines that has been extensively studied since its discovery in 2000. This review article aims to describe the cellular sources and signaling pathways of this cytokine as well as the functions of IL-22 in the intestine. In addition, this article describes the roles of IL-22 in the pathogenesis of several gastrointestinal diseases, including inhibition of inflammation and barrier defense against pathogens within the intestine. Since many of the functions of IL-22 in the intestine are incompletely understood, this review is meant to assess our current understanding of the roles of IL-22 and provide new opportunities for inquiry to improve human intestinal health and disease.
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Affiliation(s)
- Olivia B Parks
- Department of Pediatrics, University of Pittsburgh School of Medicine Pittsburgh, PA, USA
| | - Derek A Pociask
- Department of Pediatrics, University of Pittsburgh School of MedicinePittsburgh, PA, USA; Department of Pediatrics, Richard King Mellon Foundation Institute for Pediatric Research, University of Pittsburgh School of MedicinePittsburgh, PA, USA
| | - Zerina Hodzic
- Department of Pediatrics, University of Pittsburgh School of Medicine Pittsburgh, PA, USA
| | - Jay K Kolls
- Department of Pediatrics, University of Pittsburgh School of MedicinePittsburgh, PA, USA; Department of Pediatrics, Richard King Mellon Foundation Institute for Pediatric Research, University of Pittsburgh School of MedicinePittsburgh, PA, USA
| | - Misty Good
- Department of Pediatrics, University of Pittsburgh School of MedicinePittsburgh, PA, USA; Division of Newborn Medicine, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh School of MedicinePittsburgh, PA, USA
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