1
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Wang C, Khatun MS, Zhang Z, Allen MJ, Chen Z, Ellsworth CR, Currey JM, Dai G, Tian D, Bach K, Yin XM, Traina-Dorge V, Rappaport J, Maness NJ, Blair RV, Kolls JK, Pociask DA, Qin X. COVID-19 and influenza infections mediate distinct pulmonary cellular and transcriptomic changes. Commun Biol 2023; 6:1265. [PMID: 38092883 PMCID: PMC10719262 DOI: 10.1038/s42003-023-05626-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/22/2023] [Indexed: 12/17/2023] Open
Abstract
SARS-CoV-2 infection can cause persistent respiratory sequelae. However, the underlying mechanisms remain unclear. Here we report that sub-lethally infected K18-human ACE2 mice show patchy pneumonia associated with histiocytic inflammation and collagen deposition at 21 and 45 days post infection (DPI). Transcriptomic analyses revealed that compared to influenza-infected mice, SARS-CoV-2-infected mice had reduced interferon-gamma/alpha responses at 4 DPI and failed to induce keratin 5 (Krt5) at 6 DPI in lung, a marker of nascent pulmonary progenitor cells. Histologically, influenza- but not SARS-CoV-2-infected mice showed extensive Krt5+ "pods" structure co-stained with stem cell markers Trp63/NGFR proliferated in the pulmonary consolidation area at both 7 and 14 DPI, with regression at 21 DPI. These Krt5+ "pods" structures were not observed in the lungs of SARS-CoV-2-infected humans or nonhuman primates. These results suggest that SARS-CoV-2 infection fails to induce nascent Krt5+ cell proliferation in consolidated regions, leading to incomplete repair of the injured lung.
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Affiliation(s)
- Chenxiao Wang
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Mst Shamima Khatun
- Department of Medicine and Pediatrics, Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Zhe Zhang
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Michaela J Allen
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Zheng Chen
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Calder R Ellsworth
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Joshua M Currey
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Guixiang Dai
- Department of Medicine and Pediatrics, Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Di Tian
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Konrad Bach
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Xiao-Ming Yin
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Vicki Traina-Dorge
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Jay Rappaport
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Nicholas J Maness
- Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Robert V Blair
- Tulane National Primate Research Center, Covington, LA, 70433, USA
| | - Jay K Kolls
- Department of Medicine and Pediatrics, Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Derek A Pociask
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, 70112, USA.
| | - Xuebin Qin
- Tulane National Primate Research Center, Covington, LA, 70433, USA.
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, 70112, USA.
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2
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Khatun MS, Qin X, Pociask DA, Kolls JK. SARS-CoV2 Endotheliopathy: Insights from Single Cell RNAseq. Am J Respir Crit Care Med 2022; 206:1178-1179. [PMID: 35839476 PMCID: PMC9704844 DOI: 10.1164/rccm.202206-1105le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
| | - Xuebin Qin
- Tulane University School of MedicineNew Orleans, Louisiana
- Tulane National Primate Research CenterCovington, Louisiana
| | | | - Jay K. Kolls
- Tulane University School of MedicineNew Orleans, Louisiana
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3
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Mulay A, Konda B, Garcia G, Yao C, Beil S, Villalba JM, Koziol C, Sen C, Purkayastha A, Kolls JK, Pociask DA, Pessina P, de Aja JS, Garcia-de-Alba C, Kim CF, Gomperts B, Arumugaswami V, Stripp BR. SARS-CoV-2 infection of primary human lung epithelium for COVID-19 modeling and drug discovery. Cell Rep 2021; 35:109055. [PMID: 33905739 PMCID: PMC8043574 DOI: 10.1016/j.celrep.2021.109055] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [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: 08/05/2020] [Revised: 11/09/2020] [Accepted: 04/08/2021] [Indexed: 02/07/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is the latest respiratory pandemic caused by severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2). Although infection initiates in the proximal airways, severe and sometimes fatal symptoms of the disease are caused by infection of the alveolar type 2 (AT2) cells of the distal lung and associated inflammation. In this study, we develop primary human lung epithelial infection models to understand initial responses of proximal and distal lung epithelium to SARS-CoV-2 infection. Differentiated air-liquid interface (ALI) cultures of proximal airway epithelium and alveosphere cultures of distal lung AT2 cells are readily infected by SARS-CoV-2, leading to an epithelial cell-autonomous proinflammatory response with increased expression of interferon signaling genes. Studies to validate the efficacy of selected candidate COVID-19 drugs confirm that remdesivir strongly suppresses viral infection/replication. We provide a relevant platform for study of COVID-19 pathobiology and for rapid drug screening against SARS-CoV-2 and emergent respiratory pathogens.
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Affiliation(s)
- Apoorva Mulay
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Bindu Konda
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Gustavo Garcia
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA 90095, USA
| | - Changfu Yao
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Stephen Beil
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Jaquelyn M Villalba
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; California State University, Long Beach, CA, USA
| | - Colin Koziol
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Chandani Sen
- UCLA Children's Discovery and Innovation Institute, Mattel Children's Hospital UCLA, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Arunima Purkayastha
- UCLA Children's Discovery and Innovation Institute, Mattel Children's Hospital UCLA, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Jay K Kolls
- Tulane School of Medicine, New Orleans, LA 70112, USA
| | | | - Patrizia Pessina
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary & Respiratory Diseases, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Julio Sainz de Aja
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary & Respiratory Diseases, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Carolina Garcia-de-Alba
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary & Respiratory Diseases, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Carla F Kim
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary & Respiratory Diseases, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Brigitte Gomperts
- UCLA Children's Discovery and Innovation Institute, Mattel Children's Hospital UCLA, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA 90095, USA; Eli and Edythe Broad, Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, CA 90095, USA
| | - Vaithilingaraja Arumugaswami
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad, Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, CA 90095, USA.
| | - Barry R Stripp
- Lung and Regenerative Medicine Institutes, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
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4
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Mulay A, Konda B, Garcia G, Yao C, Beil S, Sen C, Purkayastha A, Kolls JK, Pociask DA, Pessina P, Sainz de Aja J, Garcia-de-Alba C, Kim CF, Gomperts B, Arumugaswami V, Stripp BR. SARS-CoV-2 infection of primary human lung epithelium for COVID-19 modeling and drug discovery. bioRxiv 2020. [PMID: 32637946 DOI: 10.1101/2020.06.29.174623.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Coronavirus disease 2019 (COVID-19) is the latest respiratory pandemic resulting from zoonotic transmission of severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2). Severe symptoms include viral pneumonia secondary to infection and inflammation of the lower respiratory tract, in some cases causing death. We developed primary human lung epithelial infection models to understand responses of proximal and distal lung epithelium to SARS-CoV-2 infection. Differentiated air-liquid interface cultures of proximal airway epithelium and 3D organoid cultures of alveolar epithelium were readily infected by SARS-CoV-2 leading to an epithelial cell-autonomous proinflammatory response. We validated the efficacy of selected candidate COVID-19 drugs confirming that Remdesivir strongly suppressed viral infection/replication. We provide a relevant platform for studying COVID-19 pathobiology and for rapid drug screening against SARS-CoV-2 and future emergent respiratory pathogens. One Sentence Summary A novel infection model of the adult human lung epithelium serves as a platform for COVID-19 studies and drug discovery.
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5
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Hebert KD, Mclaughlin N, Galeas-Pena M, Zhang Z, Eddens T, Govero A, Pilewski JM, Kolls JK, Pociask DA. Targeting the IL-22/IL-22BP axis enhances tight junctions and reduces inflammation during influenza infection. Mucosal Immunol 2020; 13:64-74. [PMID: 31597930 PMCID: PMC6917921 DOI: 10.1038/s41385-019-0206-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 08/20/2019] [Accepted: 09/02/2019] [Indexed: 02/04/2023]
Abstract
The seasonal burden of influenza coupled with the pandemic outbreaks of more pathogenic strains underscore a critical need to understand the pathophysiology of influenza injury in the lung. Interleukin-22 (IL-22) is a promising cytokine that is critical in protecting the lung during infection. This cytokine is strongly regulated by the soluble receptor IL-22-binding protein (IL-22BP), which is constitutively expressed in the lungs where it inhibits IL-22 activity. The IL-22/IL-22BP axis is thought to prevent chronic exposure of epithelial cells to IL-22. However, the importance of this axis is not understood during an infection such as influenza. Here we demonstrate through the use of IL-22BP-knockout mice (il-22ra2-/-) that a pro-IL-22 environment reduces pulmonary inflammation during H1N1 (PR8/34 H1N1) infection and protects the lung by promoting tight junction formation. We confirmed these results in normal human bronchial epithelial cells in vitro demonstrating improved membrane resistance and induction of the tight junction proteins Cldn4, Tjp1, and Tjp2. Importantly, we show that administering recombinant IL-22 in vivo reduces inflammation and fluid leak into the lung. Taken together, our results demonstrate the IL-22/IL-22BP axis is a potential targetable pathway for reducing influenza-induced pneumonia.
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Affiliation(s)
- K D Hebert
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - N Mclaughlin
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - M Galeas-Pena
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Z Zhang
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - T Eddens
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, 15224, USA
| | - A Govero
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - J M Pilewski
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J K Kolls
- Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, USA
| | - D A Pociask
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA.
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6
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Abood RN, McHugh KJ, Rich HE, Ortiz MA, Tobin JM, Ramanan K, Robinson KM, Bomberger JM, Kolls JK, Manni ML, Pociask DA, Alcorn JF. IL-22-binding protein exacerbates influenza, bacterial super-infection. Mucosal Immunol 2019; 12:1231-1243. [PMID: 31296910 PMCID: PMC6717528 DOI: 10.1038/s41385-019-0188-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 06/15/2019] [Accepted: 06/24/2019] [Indexed: 02/04/2023]
Abstract
Secondary bacterial pneumonia is a significant complication of severe influenza infection and Staphylococcus aureus and Streptococcus pneumoniae are the primary pathogens of interest. IL-22 promotes S. aureus and S. pneumoniae host defense in the lung through epithelial integrity and induction of antimicrobial peptides and is inhibited by the soluble decoy receptor IL-22-binding protein (IL-22BP). Little is known about the effect of the IL-22/IL-22BP regulatory pathway on lung infection, and it has not been studied in the setting of super-infection. We exposed wild-type and IL-22BP-/- mice to influenza A/PR/8/34 for 6 days prior to infection with S. aureus (USA300) S. pneumoniae. Super-infected IL-22BP-/- mice had decreased bacterial burden and improved survival compared to controls. IL-22BP-/- mice exhibited decreased inflammation, increased lipocalin 2 expression, and deletion of IL-22BP was associated with preserved epithelial barrier function with evidence of improved tight junction stability. Human bronchial epithelial cells treated with IL-22Fc showed evidence of improved tight junctions compared to untreated cells. This study revealed that IL-22BP-/- mice are protected during influenza, bacterial super-infection, suggesting that IL-22BP has a pro-inflammatory role and impairs epithelial barrier function likely through interaction with IL-22.
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Affiliation(s)
- Robert N Abood
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Kevin J McHugh
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Helen E Rich
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Marianna A Ortiz
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Joshua M Tobin
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Krishnaveni Ramanan
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Keven M Robinson
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jennifer M Bomberger
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jay K Kolls
- Center for Translational Research in Infection and Inflammation, Tulane University School of Medicine, New Orleans, LA, USA
| | - Michelle L Manni
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Derek A Pociask
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - John F Alcorn
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
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7
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Pociask DA, Robinson KM, Chen K, McHugh KJ, Clay ME, Huang GT, Benos PV, Janssen-Heininger YMW, Kolls JK, Anathy V, Alcorn JF. Epigenetic and Transcriptomic Regulation of Lung Repair during Recovery from Influenza Infection. Am J Pathol 2017; 187:851-863. [PMID: 28193481 DOI: 10.1016/j.ajpath.2016.12.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/07/2016] [Accepted: 12/21/2016] [Indexed: 11/28/2022]
Abstract
Seasonal and pandemic influenza is a cause of morbidity and mortality worldwide. Most people infected with influenza virus display mild-to-moderate disease phenotypes and recover within a few weeks. Influenza is known to cause persistent alveolitis in animal models; however, little is known about the molecular pathways involved in this phenotype. We challenged C57BL/6 mice with influenza A/PR/8/34 and examined lung pathologic processes and inflammation, as well as transcriptomic and epigenetic changes at 21 to 60 days after infection. Influenza induced persistent parenchymal lung inflammation, alveolar epithelial metaplasia, and epithelial endoplasmic reticulum stress that were evident after the clearance of virus and resolution of morbidity. Influenza infection induced robust changes in the lung transcriptome, including a significant impact on inflammatory and extracellular matrix protein expression. Despite the robust changes in lung gene expression, preceding influenza (21 days) did not exacerbate secondary Staphylococcus aureus infection. Finally, we examined the impact of influenza on miRNA expression in the lung and found an increase in miR-155. miR-155 knockout mice recovered from influenza infection faster than controls and had decreased lung inflammation and endoplasmic reticulum stress. These data illuminate the dynamic molecular changes in the lung in the weeks after influenza infection and characterize the repair process, identifying a novel role for miR-155.
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Affiliation(s)
- Derek A Pociask
- Department of Pulmonary Critical Care and Environmental Medicine, Tulane University School of Medicine, New Orleans, Louisiana; Richard K. Mellon Foundation Institute, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Keven M Robinson
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kong Chen
- Richard K. Mellon Foundation Institute, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Kevin J McHugh
- Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Michelle E Clay
- Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Grace T Huang
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; PhD Program in Computational Biology, Carnegie Mellon University and University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Panayiotis V Benos
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Jay K Kolls
- Richard K. Mellon Foundation Institute, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania
| | - Vikas Anathy
- Department of Pathology, University of Vermont, Burlington, Vermont
| | - John F Alcorn
- Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania.
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8
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McAleer JP, Nguyen NLH, Chen K, Kumar P, Ricks DM, Binnie M, Armentrout RA, Pociask DA, Hein A, Yu A, Vikram A, Bibby K, Umesaki Y, Rivera A, Sheppard D, Ouyang W, Hooper LV, Kolls JK. Pulmonary Th17 Antifungal Immunity Is Regulated by the Gut Microbiome. J Immunol 2016; 197:97-107. [PMID: 27217583 PMCID: PMC4912941 DOI: 10.4049/jimmunol.1502566] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/25/2016] [Indexed: 12/18/2022]
Abstract
Commensal microbiota are critical for the development of local immune responses. In this article, we show that gut microbiota can regulate CD4 T cell polarization during pulmonary fungal infections. Vancomycin drinking water significantly decreased lung Th17 cell numbers during acute infection, demonstrating that Gram-positive commensals contribute to systemic inflammation. We next tested a role for RegIIIγ, an IL-22-inducible antimicrobial protein with specificity for Gram-positive bacteria. Following infection, increased accumulation of Th17 cells in the lungs of RegIIIγ(-/-) and Il22(-/-) mice was associated with intestinal segmented filamentous bacteria (SFB) colonization. Although gastrointestinal delivery of rRegIIIγ decreased lung inflammatory gene expression and protected Il22(-/-) mice from weight loss during infection, it had no direct effect on SFB colonization, fungal clearance, or lung Th17 immunity. We further show that vancomycin only decreased lung IL-17 production in mice colonized with SFB. To determine the link between gut microbiota and lung immunity, serum-transfer experiments revealed that IL-1R ligands increase the accumulation of lung Th17 cells. These data suggest that intestinal microbiota, including SFB, can regulate pulmonary adaptive immune responses.
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Affiliation(s)
- Jeremy P McAleer
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - Nikki L H Nguyen
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224; Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112
| | - Kong Chen
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - Pawan Kumar
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - David M Ricks
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224; Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112
| | - Matthew Binnie
- Division of Respirology, Department of Medicine, University of Toronto, Ontario M5B 1W8, Canada
| | - Rachel A Armentrout
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - Derek A Pociask
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - Aaron Hein
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224
| | - Amy Yu
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112
| | - Amit Vikram
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15261
| | - Kyle Bibby
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA 15261; Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA 15260
| | - Yoshinori Umesaki
- Yakult Central Institute for Microbiological Research, Kunitachi-shi, Tokyo 186-8650, Japan
| | - Amariliz Rivera
- Department of Pediatrics, Center for Immunity and Inflammation, New Jersey Medical School, Newark, NJ 07101
| | - Dean Sheppard
- Lung Biology Center, University of California, San Francisco, San Francisco, CA 94143
| | - Wenjun Ouyang
- Department of Immunology, Genentech, South San Francisco, CA 94080; and
| | - Lora V Hooper
- Department of Immunology, Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Jay K Kolls
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224;
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9
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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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10
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Xu B, Guenther JF, Pociask DA, Wang Y, Kolls JK, You Z, Chandrasekar B, Shan B, Sullivan DE, Morris GF. Promotion of lung tumor growth by interleukin-17. Am J Physiol Lung Cell Mol Physiol 2014; 307:L497-508. [PMID: 25038189 DOI: 10.1152/ajplung.00125.2014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Recent findings demonstrate that inhaled cigarette smoke, the predominant lung carcinogen, elicits a T helper 17 (Th17) inflammatory phenotype. Interleukin-17A (IL-17), the hallmark cytokine of Th17 inflammation, displays pro- and antitumorigenic properties in a manner that varies according to tumor type and assay system. To investigate the role of IL-17 in lung tumor growth, we used an autochthonous tumor model (K-Ras(LA1) mice) with lung delivery of a recombinant adenovirus that expresses IL-17A. Virus-mediated expression of IL-17A in K-Ras(LA1) mice at 8-10 wk of age doubled lung tumor growth in 3 wk relative to littermates that received a green fluorescent protein-expressing control adenovirus. IL-17 induced matrix metalloproteinase-9 (MMP-9) expression in vivo and in vitro. In accord with this finding, selective and specific inhibitors of MMP-9 repressed the increased motility and invasiveness of IL-17-treated lung tumor cells in culture. Knockdown or mutation of p53 promoted the motility of murine lung tumor cells and abrogated the promigratory role of IL-17. Coexpression of siRNA-resistant wild-type, but not mutant, human p53 rescued both IL-17-mediated migration and MMP-9 mRNA induction in p53 knockdown lung tumor cells. IL-17 increased MMP-9 mRNA stability by reducing interaction with the mRNA destabilizing serine/arginine-rich splicing factor 1 (SRSF1). Taken together, our results indicate that IL-17 stimulates lung tumor growth and regulates MMP-9 mRNA levels in a p53- and SRSF1-dependent manner.
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Affiliation(s)
- Beibei Xu
- Department of Pathology and Laboratory Medicine, Tulane University, New Orleans, Louisiana
| | - James F Guenther
- Department of Pathology and Laboratory Medicine, Tulane University, New Orleans, Louisiana
| | - Derek A Pociask
- Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yu Wang
- Department of Pathology and Laboratory Medicine, Tulane University, New Orleans, Louisiana
| | - Jay K Kolls
- Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Zongbing You
- Department of Structural and Cellular Biology, Tulane University, New Orleans, Louisiana
| | | | - Bin Shan
- Department of Medicine-Pulmonary Section, Tulane University, New Orleans, Louisiana
| | | | - Gilbert F Morris
- Department of Pathology and Laboratory Medicine, Tulane University, New Orleans, Louisiana;
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11
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Frazer LC, Scurlock AM, Zurenski MA, Riley MM, Mintus M, Pociask DA, Sullivan JE, Andrews CW, Darville T. IL-23 induces IL-22 and IL-17 production in response to Chlamydia muridarum genital tract infection, but the absence of these cytokines does not influence disease pathogenesis. Am J Reprod Immunol 2013; 70:472-84. [PMID: 24238108 PMCID: PMC3852156 DOI: 10.1111/aji.12171] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [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: 04/28/2013] [Accepted: 10/03/2013] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Chlamydia trachomatis infections are a significant cause of reproductive tract pathology. Protective and pathological immune mediators must be differentiated to design a safe and effective vaccine. METHODS Wild-type mice and mice deficient in IL-22 and IL-23 were infected intravaginally with Chlamydia muridarum, and their course of infection and oviduct pathology were compared. Local genital tract and draining lymph node immune responses were also examined in IL-23-deficient mice. RESULTS IL-22- and IL-23-deficient mice exhibited normal susceptibility to infection and oviduct pathology. IL-23 was required for the development of a Chlamydia-specific Th17 response in the lymph nodes and for production of IL-22 and IL-17 in the genital tract. However, influx of Th1 and innate immune cells was not compromised in the absence of IL-23. CONCLUSION IL-22 and IL-23 play either redundant or minimal roles in the pathogenesis of Chlamydia infection in the mouse model. Induction of Th17-associated cytokines by a Chlamydia vaccine should be avoided as these responses are not central to resolution of infection and have pathologic potential.
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Affiliation(s)
- Lauren C. Frazer
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15201
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Amy M. Scurlock
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children’s Hospital Research Institute, Little Rock, Arkansas 72202
| | - Matthew A. Zurenski
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Melissa M. Riley
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Margaret Mintus
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Derek A. Pociask
- Richard King Mellon Foundation Institute for Pediatric Research, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Jeanne E. Sullivan
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | | | - Toni Darville
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15201
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
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12
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Gopal R, Rangel-Moreno J, Fallert Junecko BA, Mallon DJ, Chen K, Pociask DA, Connell TD, Reinhart TA, Alcorn JF, Ross TM, Kolls JK, Khader SA. Mucosal pre-exposure to Th17-inducing adjuvants exacerbates pathology after influenza infection. Am J Pathol 2013; 184:55-63. [PMID: 24183780 DOI: 10.1016/j.ajpath.2013.09.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/06/2013] [Accepted: 09/16/2013] [Indexed: 01/09/2023]
Abstract
Mucosal vaccines are thought to confer superior protection against mucosal infectious diseases. In addition, mucosal routes of vaccine delivery preferentially induce the generation of T helper 17 (Th17) cells, which produce the cytokine IL-17. Th17 cells are critical in mediating vaccine-induced immunity against several mucosal infectious diseases. However, IL-17 is also a potent proinflammatory cytokine, and we recently showed that IL-17 mediates immunopathology and lung injury after influenza infection in mice. In the present study, we tested the hypothesis that mucosal pre-exposure to Th17-inducing adjuvants can promote disease exacerbation upon subsequent infection with influenza virus. Mice mucosally pre-exposed to Th17-inducing adjuvants, such as type II heat-labile enterotoxin or cholera toxin, resulted in increased morbidity and exacerbated lung inflammation upon subsequent infection with influenza virus. Furthermore, the increased morbidity was accompanied by increased expression of inflammatory chemokines and increased accumulation of neutrophils. Importantly, blockade of the IL-17 pathway in mice pre-exposed to Th17-inducing adjuvants resulted in attenuation of the inflammatory phenotype seen in influenza-infected mice. Our findings indicate that, before mucosal Th17-inducing adjuvants can be used in vaccine strategies, the short- and long-term detrimental effects of such adjuvants on disease exacerbation and lung injury in response to infections, such as influenza, should be carefully studied.
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Affiliation(s)
- Radha Gopal
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Javier Rangel-Moreno
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - Beth A Fallert Junecko
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Daniel J Mallon
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Kong Chen
- Department of Pediatrics and Immunology, the Richard King Mellon Institute for Pediatric Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Derek A Pociask
- Department of Pediatrics and Immunology, the Richard King Mellon Institute for Pediatric Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Terry D Connell
- Witebsky Center for Microbial Pathogenesis and Immunology and Department of Microbiology and Immunology, University at Buffalo, Buffalo, New York
| | - Todd A Reinhart
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - John F Alcorn
- Division of Pulmonary Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ted M Ross
- Vaccine and Gene Therapy Institute of Florida, Port St. Lucie, Florida
| | - Jay K Kolls
- Department of Pediatrics and Immunology, the Richard King Mellon Institute for Pediatric Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Shabaana A Khader
- Division of Infectious Diseases, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
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13
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Pociask DA, Scheller EV, Mandalapu S, McHugh KJ, Enelow RI, Fattman CL, Kolls JK, Alcorn JF. IL-22 is essential for lung epithelial repair following influenza infection. Am J Pathol 2013; 182:1286-96. [PMID: 23490254 PMCID: PMC3620404 DOI: 10.1016/j.ajpath.2012.12.007] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 11/08/2012] [Accepted: 12/11/2012] [Indexed: 12/21/2022]
Abstract
Influenza infection is widespread in the United States and the world. Despite low mortality rates due to infection, morbidity is common and little is known about the molecular events involved in recovery. Influenza infection results in persistent distal lung remodeling, and the mechanism(s) involved are poorly understood. Recently IL-22 has been found to mediate epithelial repair. We propose that IL-22 is critical for recovery of normal lung function and architecture after influenza infection. Wild-type and IL-22(-/-) mice were infected with influenza A PR8/34 H1N1 and were followed up for up to 21 days post infection. IL-22 receptor was localized to the airway epithelium in naive mice but was expressed at the sites of parenchymal lung remodeling induced by influenza infection. IL-22(-/-) mice displayed exacerbated lung injury compared with wild-type mice, which correlated with decreased lung function 21 days post infection. Epithelial metaplasia was observed in wild-type mice but was not evident in IL-22(-/-) animals that were characterized with an increased fibrotic phenotype. Gene expression analysis revealed aberrant expression of epithelial genes involved in repair processes, among changes in several other biological processes. These data indicate that IL-22 is required for normal lung repair after influenza infection. IL-22 represents a novel pathway involved in interstitial lung disease.
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Affiliation(s)
- Derek A. Pociask
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Erich V. Scheller
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Sivanarayana Mandalapu
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kevin J. McHugh
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Richard I. Enelow
- Department of Medicine, Dartmouth Medical School, Lebanon, New Hampshire
| | - Cheryl L. Fattman
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
| | - Jay K. Kolls
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - John F. Alcorn
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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14
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Chan YR, Chen K, Duncan SR, Lathrop KL, Latoche JD, Logar AJ, Pociask DA, Wahlberg BJ, Ray P, Ray A, Pilewski JM, Kolls JK. Patients with cystic fibrosis have inducible IL-17+IL-22+ memory cells in lung draining lymph nodes. J Allergy Clin Immunol 2013; 131:1117-29, 1129.e1-5. [PMID: 22795370 PMCID: PMC3488163 DOI: 10.1016/j.jaci.2012.05.036] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [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: 07/08/2011] [Revised: 05/01/2012] [Accepted: 05/31/2012] [Indexed: 01/22/2023]
Abstract
BACKGROUND IL-17 is an important cytokine signature of the TH differentiation pathway TH17. This T-cell subset is crucial in mediating autoimmune disease or antimicrobial immunity in animal models, but its presence and role in human disease remain to be completely characterized. OBJECTIVE We set out to determine the frequency of TH17 cells in patients with cystic fibrosis (CF), a disease in which there is recurrent infection with known pathogens. METHODS Explanted lungs from patients undergoing transplantation or organ donors (CF samples=18; non-CF, nonbronchiectatic samples=10) were collected. Hilar nodes and parenchymal lung tissue were processed and examined for TH17 signature by using immunofluorescence and quantitative real-time PCR. T cells were isolated and stimulated with antigens from Pseudomonas aeruginosa and Aspergillus species. Cytokine profiles and staining with flow cytometry were used to assess the reactivity of these cells to antigen stimulation. RESULTS We found a strong IL-17 phenotype in patients with CF compared with that seen in control subjects without CF. Within this tissue, we found pathogenic antigen-responsive CD4+IL-17+ cells. There were double-positive IL-17+IL-22+ cells [TH17(22)], and the IL-22+ population had a higher proportion of memory characteristics. Antigen-specific TH17 responses were stronger in the draining lymph nodes compared with those seen in matched parenchymal lungs. CONCLUSION Inducible proliferation of TH17(22) with memory cell characteristics is seen in the lungs of patients with CF. The function of these individual subpopulations will require further study regarding their development. T cells are likely not the exclusive producers of IL-17 and IL-22, and this will require further characterization.
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Affiliation(s)
- Yvonne R Chan
- Division of Pulmonary, Allergy and Critical Care Medicine, the Eye and Ear Institute, University of Pittsburgh, and the Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh, Pittsburgh, PA 15213, USA.
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15
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Choi SM, McAleer JP, Zheng M, Pociask DA, Kaplan MH, Qin S, Reinhart TA, Kolls JK. Innate Stat3-mediated induction of the antimicrobial protein Reg3γ is required for host defense against MRSA pneumonia. ACTA ACUST UNITED AC 2013; 210:551-61. [PMID: 23401489 PMCID: PMC3600913 DOI: 10.1084/jem.20120260] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
STAT3-mediated induction of Reg3γ enhances bacteriostatic and bactericidal activity to pulmonary Staphylococcus aureus. Pulmonary Staphylococcus aureus (SA) infections are a public health concern and a major complication of hyper-IgE syndrome, caused by mutations in STAT3. In contrast to previous findings of skin infection, we observed that clearance of SA from the lung did not require T, B, or NK cells but did require Stat3 activation. Immunohistochemistry showed robust Stat3 phosphorylation in the lung epithelium. We identified that a critical Stat3 target gene in lung epithelium is Reg3g (regenerating islet-derived 3 γ), a gene which is highly expressed in gastrointestinal epithelium but whose role in pulmonary host defense is uncharacterized. Stat3 regulated Reg3g transcription through direct binding at the Reg3g promoter region. Recombinant Reg3γ bound to SA and had both bacteriostatic and bactericidal activity in a dose-dependent fashion. Stat3 inhibition in vivo reduced Reg3g transcripts in the lung, and more importantly, recombinant Reg3γ rescued mice from defective SA clearance. These findings reveal an antibacterial function for lung epithelium through Stat3-mediated induction of Reg3γ.
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Affiliation(s)
- Sun-Mi Choi
- Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
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16
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McGeough MD, Pena CA, Mueller JL, Pociask DA, Broderick L, Hoffman HM, Brydges SD. Cutting edge: IL-6 is a marker of inflammation with no direct role in inflammasome-mediated mouse models. J Immunol 2012; 189:2707-11. [PMID: 22904305 DOI: 10.4049/jimmunol.1101737] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
IL-6 is a known downstream target of IL-1β and is consistently increased in serum from patients with NLRP3 inflammasome-mediated conditions. Therefore, IL-6 could be a therapeutic target in the treatment of IL-1β-provoked inflammation. IL-6 was increased in serum with accompanying neutrophilia in tissues of an inducible mouse model of Muckle-Wells syndrome. However, an IL-6-null background failed to provide phenotypic rescue and did not significantly impact inflammatory cytokine levels. In a second model of IL-1β-driven inflammation, NLRP3 activation by monosodium urate crystals similarly increased IL-6. Consistent with our Muckle-Wells syndrome model, ablation of IL-6 did not impact an acute neutrophilic response in this in vivo evaluation of gouty arthritis. Taken together, our results indicate that IL-6 is a reliable marker of inflammation, with no direct role in inflammasome-mediated disease.
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Affiliation(s)
- Matthew D McGeough
- Department of Pediatrics, University of California at San Diego, La Jolla, CA 92093, USA
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17
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Roberson EC, Tully JE, Guala AS, Reiss JN, Godburn KE, Pociask DA, Alcorn JF, Riches DWH, Dienz O, Janssen-Heininger YMW, Anathy V. Influenza induces endoplasmic reticulum stress, caspase-12-dependent apoptosis, and c-Jun N-terminal kinase-mediated transforming growth factor-β release in lung epithelial cells. Am J Respir Cell Mol Biol 2011; 46:573-81. [PMID: 21799120 DOI: 10.1165/rcmb.2010-0460oc] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Influenza A virus (IAV) infection is known to induce endoplasmic reticulum (ER) stress, Fas-dependent apoptosis, and TGF-β production in a variety of cells. However, the relationship between these events in murine primary tracheal epithelial cells (MTECS), which are considered one of the primary sites of IAV infection and replication, is unclear. We show that IAV infection induced ER stress marker activating transcription factor-6 and endoplasmic reticulum protein 57-kD (ERp57), but not C/EBP homologous protein (CHOP). In contrast, the ER stress inducer thapsigargin (THP) increased CHOP. IAV infection activated caspases and apoptosis, independently of Fas and caspase-8, in MTECs. Instead, apoptosis was mediated by caspase-12. A decrease in ERp57 attenuated the IAV burden and decreased caspase-12 activation and apoptosis in epithelial cells. TGF-β production was enhanced in IAV-infected MTECs, compared with THP or staurosporine. IAV infection caused the activation of c-Jun N-terminal kinase (JNK). Furthermore, IAV-induced TGF-β production required the presence of JNK1, a finding that suggests a role for JNK1 in IAV-induced epithelial injury and subsequent TGF-β production. These novel findings suggest a potential mechanistic role for a distinct ER stress response induced by IAV, and a profibrogenic/repair response in contrast to other pharmacological inducers of ER stress. These responses may also have a potential role in acute lung injury, fibroproliferative acute respiratory distress syndrome, and the recently identified H1N1 influenza-induced exacerbations of chronic obstructive pulmonary disease (Wedzicha JA. Proc Am Thorac Soc 2004;1:115-120) and idiopathic pulmonary fibrosis (Umeda Y, et al. Int Med 2010;49:2333-2336).
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Affiliation(s)
- Elle C Roberson
- Department of Pathology, University of Vermont, Burlington, VT 05405, USA
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18
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Chen K, Pociask DA, McAleer JP, Chan YR, Alcorn JF, Kreindler JL, Keyser MR, Shapiro SD, Houghton AM, Kolls JK, Zheng M. IL-17RA is required for CCL2 expression, macrophage recruitment, and emphysema in response to cigarette smoke. PLoS One 2011; 6:e20333. [PMID: 21647421 PMCID: PMC3103542 DOI: 10.1371/journal.pone.0020333] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 04/18/2011] [Indexed: 01/25/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is characterized by airspace enlargement and peribronchial lymphoid follicles; however, the immunological mechanisms leading to these pathologic changes remain undefined. Here we show that cigarette smoke is a selective adjuvant that augments in vitro and in vivo Th17, but not Th1, cell differentiation via the aryl hydrocarbon receptor. Smoke exposed IL-17RA(-/-) mice failed to induce CCL2 and MMP12 compared to WT mice. Remarkably, in contrast to WT mice, IL-17RA(-/-) mice failed to develop emphysema after 6 months of cigarette smoke exposure. Taken together, these data demonstrate that cigarette smoke is a potent Th17 adjuvant and that IL-17RA signaling is required for chemokine expression necessary for MMP12 induction and tissue emphysema.
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Affiliation(s)
- Kong Chen
- Department of Genetics, Louisiana State University Health Science Center, New Orleans, Louisiana, United States of America
| | - Derek A. Pociask
- Department of Genetics, Louisiana State University Health Science Center, New Orleans, Louisiana, United States of America
| | - Jeremy P. McAleer
- Department of Genetics, Louisiana State University Health Science Center, New Orleans, Louisiana, United States of America
| | - Yvonne R. Chan
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - John F. Alcorn
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - James L. Kreindler
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | | | - Steven D. Shapiro
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - A. McGarry Houghton
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Jay K. Kolls
- Department of Genetics, Louisiana State University Health Science Center, New Orleans, Louisiana, United States of America
| | - Mingquan Zheng
- Department of Genetics, Louisiana State University Health Science Center, New Orleans, Louisiana, United States of America
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Abstract
A lineage of CD4+ T cells known as Th17 cells, which are derived by exposure of naive CD4+ T cells to IL-6 and TGF-β, have been implicated in several autoimmune diseases. In this issue of the JCI, studies by Acharya et al. and Melton et al. show that TGF-β is activated at the DC/CD4+ T cell synapse by αv integrins and that this activation is required for Th17 differentiation and autoimmunity in the central nervous system. Thus, these studies offer a potential therapeutic target in fighting autoimmune diseases.
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Affiliation(s)
- Derek A Pociask
- Department of Genetics, Louisiana State University, Health Sciences Center, New Orleans, Louisiana, USA
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20
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Lai TC, Pociask DA, Ferris M, Nguyen HT, Miller CA, Brody A, Sullivan D. Small interfering RNAs (siRNAs) targeting TGF-beta1 mRNA suppress asbestos-induced expression of TGF-beta1 and CTGF in fibroblasts. J Environ Pathol Toxicol Oncol 2009; 28:109-19. [PMID: 19817698 DOI: 10.1615/jenvironpatholtoxicoloncol.v28.i2.30] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Interstitial lung disease (ILD) afflicts millions of people worldwide. ILD can be caused by a number of agents, including inhaled asbestos, and may ultimately result in respiratory failure and death. Currently, there are no effective treatments for ILD. Transforming growth factor-beta1 (TGF-beta1) is thought to play an important role in the development of pulmonary fibrosis, and asbestos has been shown to induce TGF-beta1 expression in a murine model of ILD. To better define the role of TGF-beta1 in ILD, we developed several small interfering RNAs (siRNAs) that target TGF-beta1 mRNA for degradation. To assess the efficacy of each siRNA in reducing asbestos-induced TGF-beta1 expression, Swiss 3T3 fibroblasts were transfected with TGF-beta1 siRNAs and then treated with chrysotile asbestos for 48 h. Two independent siRNAs targeting TGF-beta1 mRNA knocked-down asbestos-induced expression of TGF-beta1 mRNA by 72-89% and protein by 70-84%. Interestingly, siRNA knockdown of TGF-beta1 also reduced asbestos-induced expression of connective tissue growth factor (CTGF). CTGF can be upregulated by TGF-beta1 and appears to play an important role in the development of pulmonary fibrosis. These results suggest that siRNAs could be effective in preventing or possibly arresting the progression of pulmonary fibrosis. Studies are underway in vivo to test this postulate.
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Affiliation(s)
- Tai-Cheng Lai
- Department of Environmental Health Sciences, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, USA
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21
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Crowe CR, Chen K, Pociask DA, Alcorn JF, Krivich C, Enelow RI, Ross TM, Witztum JL, Kolls JK. Critical role of IL-17RA in immunopathology of influenza infection. J Immunol 2009; 183:5301-10. [PMID: 19783685 DOI: 10.4049/jimmunol.0900995] [Citation(s) in RCA: 274] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Acute lung injury due to influenza infection is associated with high mortality, an increase in neutrophils in the airspace, and increases in tissue myeloperoxidase (MPO). Because IL-17A and IL-17F, ligands for IL-17 receptor antagonist (IL-17RA), have been shown to mediate neutrophil migration into the lung in response to LPS or Gram-negative bacterial pneumonia, we hypothesized that IL-17RA signaling was critical for acute lung injury in response to pulmonary influenza infection. IL-17RA was critical for weight loss and both neutrophil migration and increases in tissue myeloperoxidase (MPO) after influenza infection. However, IL-17RA was dispensable for the recruitment of CD8(+) T cells specific for influenza hemagglutinin or nucleocapsid protein. Consistent with this, IL-17RA was not required for viral clearance. However, in the setting of influenza infection, IL-17RA(-/-) mice showed significantly reduced levels of oxidized phospholipids, which have previously been shown to be an important mediator in several models of acute lung injury, including influenza infection and gastric acid aspiration. Taken together, these data support targeting IL-17 or IL-17RA in acute lung injury due to acute viral infection.
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22
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Chan YR, Liu JS, Pociask DA, Zheng M, Mietzner TA, Berger T, Mak TW, Clifton MC, Strong RK, Ray P, Kolls JK. Lipocalin 2 is required for pulmonary host defense against Klebsiella infection. J Immunol 2009; 182:4947-56. [PMID: 19342674 DOI: 10.4049/jimmunol.0803282] [Citation(s) in RCA: 171] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Antimicrobial proteins comprise a significant component of the acute innate immune response to infection. They are induced by pattern recognition receptors as well as by cytokines of the innate and adaptive immune pathways and play important roles in infection control and immunomodulatory homeostasis. Lipocalin 2 (siderocalin, NGAL, 24p3), a siderophore-binding antimicrobial protein, is critical for control of systemic infection with Escherichia coli; however, its role in mucosal immunity in the respiratory tract is unknown. In this study, we found that lipocalin 2 is rapidly and robustly induced by Klebsiella pneumoniae infection and is TLR4 dependent. IL-1beta and IL-17 also individually induce lipocalin 2. Mucosal administration of IL-1beta alone could reconstitute the lipocalin 2 deficiency in TLR4 knockout animals and rescue them from infection. Lipocalin 2-deficient animals have impaired lung bacterial clearance in this model and mucosal reconstitution of lipocalin 2 protein in these animals resulted in rescue of this phenotype. We conclude that lipocalin 2 is a crucial component of mucosal immune defense against pulmonary infection with K. pneumoniae.
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Affiliation(s)
- Yvonne R Chan
- Department of Medicine, Division of Pulmonary, Allergy & Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, USA
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Aujla SJ, Chan YR, Zheng M, Fei M, Askew DJ, Pociask DA, Reinhart TA, McAllister F, Edeal J, Gaus K, Husain S, Kreindler JL, Dubin PJ, Pilewski JM, Myerburg MM, Mason CA, Iwakura Y, Kolls JK. IL-22 mediates mucosal host defense against Gram-negative bacterial pneumonia. Nat Med 2008; 14:275-81. [PMID: 18264110 PMCID: PMC2901867 DOI: 10.1038/nm1710] [Citation(s) in RCA: 903] [Impact Index Per Article: 56.4] [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: 11/30/2007] [Accepted: 12/17/2007] [Indexed: 12/11/2022]
Abstract
Emerging evidence supports the concept that T helper type 17 (T(H)17) cells, in addition to mediating autoimmunity, have key roles in mucosal immunity against extracellular pathogens. Interleukin-22 (IL-22) and IL-17A are both effector cytokines produced by the T(H)17 lineage, and both were crucial for maintaining local control of the Gram-negative pulmonary pathogen, Klebsiella pneumoniae. Although both cytokines regulated CXC chemokines and granulocyte colony-stimulating factor production in the lung, only IL-22 increased lung epithelial cell proliferation and increased transepithelial resistance to injury. These data support the concept that the T(H)17 cell lineage and its effector molecules have evolved to effect host defense against extracellular pathogens at mucosal sites.
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Affiliation(s)
- Shean J Aujla
- Children's Hospital of Pittsburgh, Suite 3765, 3705 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA
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Spees JL, Pociask DA, Sullivan DE, Whitney MJ, Lasky JA, Prockop DJ, Brody AR. Engraftment of bone marrow progenitor cells in a rat model of asbestos-induced pulmonary fibrosis. Am J Respir Crit Care Med 2007; 176:385-94. [PMID: 17496228 PMCID: PMC1994214 DOI: 10.1164/rccm.200607-1004oc] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Bone marrow-derived cells have been shown to engraft during lung fibrosis. However, it is not known if similar cells engraft consequent to inhalation of asbestos fibers that cause pulmonary fibrosis, or if the cells proliferate and differentiate at sites of injury. OBJECTIVES We examined whether bone marrow-derived cells participate in the pulmonary fibrosis that is produced by exposure to chrysotile asbestos fibers. METHODS Adult female rats were lethally irradiated and rescued by bone marrow transplant from male transgenic rats ubiquitously expressing green fluorescent protein (GFP). Three weeks later, the rats were exposed to an asbestos aerosol for 5 hours on three consecutive days. Controls were bone marrow-transplanted but not exposed to asbestos. MEASUREMENTS AND MAIN RESULTS One day and 2.5 weeks after exposure, significant numbers of GFP-labeled male cells had preferentially migrated to the bronchiolar-alveolar duct bifurcations, the specific anatomic site at which asbestos produces the initial fibrogenic lesions. GFP-positive cells were present at the lesions as monocytes and macrophages, fibroblasts, and myofibroblasts or smooth muscle cells. Staining with antibodies to PCNA demonstrated that some of the engrafted cells were proliferating in the lesions and along the bronchioles. Negative results for TUNEL at the lesions confirmed that both PCNA-positive endogenous pulmonary cells and bone marrow-derived cells were proliferating rather than undergoing apoptosis, necrosis, or DNA repair. CONCLUSIONS Bone marrow-derived cells migrated into developing fibrogenic lesions, differentiated into multiple cell types, and persisted for at least 2.5 weeks after the animals were exposed to aerosolized chrysotile asbestos fibers.
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Affiliation(s)
- Jeffrey L Spees
- Department of Medicine, Cardiovascular Research Institute, University of Vermont, 208 South Park Drive, Suite 2, Colchester, VT 05446, USA.
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Thomas DD, Espey MG, Pociask DA, Ridnour LA, Donzelli S, Wink DA. Asbestos redirects nitric oxide signaling through rapid catalytic conversion to nitrite. Cancer Res 2007; 66:11600-4. [PMID: 17178853 DOI: 10.1158/0008-5472.can-06-1140] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Asbestos exposure is strongly associated with the development of malignant mesothelioma, yet the mechanistic basis of this observation has not been resolved. Carcinogenic transformation or tumor progression mediated by asbestos may be related to the generation of free radical species and perturbation of cell signaling and transcription factors. We report here that exposure of human mesothelioma or lung carcinoma cells to nitric oxide (NO) in the presence of crocidolite asbestos resulted in a marked decrease in intracellular nitrosation and diminished NO-induced posttranslational modifications of tumor-associated proteins (hypoxia-inducible factor-1alpha and p53). Crocidolite rapidly scavenged NO with concomitant conversion to nitrite (NO(2)(-)). Crocidolite also catalyzed the nitration of cellular proteins in the presence of NO(2)(-) and hydrogen peroxide. Nitrated protein adducts are a prominent feature of asbestos-induced lung injury. These data highlight the ability of asbestos to induce phenotypic cellular changes through two processes: (a) by directly reducing bioactive NO levels and preventing its subsequent interaction with target molecules and (b) by increasing oxidative damage and protein modifications through NO(2) production and 3-nitrotyrosine formation.
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Affiliation(s)
- Douglas D Thomas
- Tumor Biology Section, Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA.
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Abstract
Transforming growth factor-beta1 (TGF-beta1) is a potent peptide that inhibits epithelial and mesenchymal cell proliferation and stimulates the synthesis of extracellular matrix components. This cytokine is produced in a biologically latent complex bound to a latent-associated peptide (LAP), and it is the disassociation of this complex that regulates TGF-beta activity. A number of mechanisms have been shown to activate TGF-beta1. We show here that reactive oxygen species (ROS), generated by the iron in chrysotile or crocidolite asbestos, mediate the biological activity of TGF-beta1. Recombinant human latent TGF-beta1 was activated in a cell free system in the presence of asbestos and ascorbic acid. Latent TGF-beta1 was overexpressed in both A549 and mink lung epithelial cell lines through an adenovirus vector containing the full-length construct for porcine TGF-beta1. This latent TGF-beta1 was activated in a concentration-dependant fashion by introducing asbestos into the cell cultures. This activation was reduced significantly through the use of superoxide dismutase, catalase or deferoxamine. Amino-acid constituents of the LAP were oxidized as demonstrated by the appearance of carbonyls detected by Western analysis. The oxidized LAP could no longer form a complex with TGF-beta1. Our data support the postulate that ROS derived from asbestos provide a mechanism for activating TGF-beta1 in the alveolar environment by oxidizing amino acids in LAP.
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Affiliation(s)
- Derek A Pociask
- Lung Biology Program, Department of Pathology, Tulane University Health Science Center, New Orleans, LA, USA
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Warshamana GS, Pociask DA, Sime P, Schwartz DA, Brody AR. Susceptibility to asbestos-induced and transforming growth factor-beta1-induced fibroproliferative lung disease in two strains of mice. Am J Respir Cell Mol Biol 2002; 27:705-13. [PMID: 12444030 DOI: 10.1165/rcmb.2002-0096oc] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [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] [Indexed: 11/24/2022] Open
Abstract
Pulmonary fibrosis (PF) is caused by a number of inhaled agents, as well as by some drugs and toxic particles. The elaboration of certain peptide growth factors is thought to be key to the development of this disease process. In addition, genetic susceptibility plays a role in the development of PF. For instance, we have previously shown that the 129J strain of mice is resistant, whereas the C57BL/6 strain is highly susceptible, to asbestos-induced fibrosis. To pursue this further, in one mouse model, we crossed the 129J strain to the C57BL/6 strain to produce an F1 generation and subsequently backcrossed the F1 mice to the inbred founders. This backcross to the 129 inbred strain produced reverse similar 25% of the offspring with a phenotype that was protected from the fibrogenic effects of inhaled asbestos fibers. In the second model, both strains of mice were treated intratracheally with an adenovirus vector (AdV), which transduces expression of active transforming growth factor (TGF)-beta(1) in the lungs, producing fibroproliferative lung disease. Compared with C57 mice, a significant number of 129 strain mice exhibited at least a 1-wk delay in the fibroproliferative response to TGF-beta(1) expression at three concentrations of virus. These findings suggest that certain sequences in a gene or a cluster of genes in the 129 mouse strain impart a phenotype in which there is a delay in, or protection from, the development of lung fibrogenesis.
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Affiliation(s)
- G Sakuntala Warshamana
- Lung Biology Program, Department of Pathology, Tulane University Health Sciences Center, New Orleans, Louisiana 70112-2699, USA
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Warshamana GS, Pociask DA, Fisher KJ, Liu JY, Sime PJ, Brody AR. Titration of non-replicating adenovirus as a vector for transducing active TGF-beta1 gene expression causing inflammation and fibrogenesis in the lungs of C57BL/6 mice. Int J Exp Pathol 2002; 83:183-201. [PMID: 12485463 PMCID: PMC2517682 DOI: 10.1046/j.1365-2613.2002.00229.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [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] [Indexed: 11/20/2022] Open
Abstract
Investigators have shown that interstitial pulmonary fibrosis (IPF) can be induced in rats by overexpressing transforming growth factor beta1 (TGF-beta1) through a replication-deficient recombinant adenovirus vector instilled into the lungs (Sime et al. 1997). We have shown that this vector induces IPF in fibrogenic-resistant tumour necrosis factor alpha-receptor knockout (TNF-alphaRKO) mice (Liu et al. 2001). The object of our studies is to understand how peptide growth factors, such as TGF-beta1, mediate interstitial lung disease (ILD). To do so, we must be able to manipulate the dose of the factor and sort out its effects on multiple other mediators in the lung parenchyma. As a step in this complex process, in the studies reported here, we have determined the concentrations of the recombinant adenovirus vector carrying the gene for porcine active TGF-beta1 (AVTGFbeta1) that have little apparent effect, cause clear induction of disease, or severe disease. The disease largely resolves by 28 days in all cases, thus providing a valuable model to understand the mechanisms of the IPF that is mediated, at least in part, by TGF-beta1. The findings here show that 10(6) plaque-forming units (pfu) of AVTGFbeta1, provide essentially a 'no-effect' dose, but even this amount of TGF-beta1 causes a significant increase in whole-lung collagen by day 28 after treatment. In contrast, 10(8) and 10(9) pfu cause severe IPF in 4 days, whereas 10(7) and 5 x 10(7) are intermediate for all parameters studied, i.e. TGF-beta protein, inflammatory cells, cell proliferation, pro-alpha 1(I) collagen gene expression and whole-lung collagen accumulation, and expression of growth factors such as TGF-beta1, TNF-alpha and PDGF-A and -B. Interestingly enough, TGF-beta1, as a potent blocker of epithelial cell proliferation, appears to suppress airway epithelial cell growth that would be expected during the inflammatory phase of IPF. Thus, this model system helps us to understand some quantitative aspects of TGF-beta1 biological activity and allows us to manipulate this potent factor as a mediator of interstitial fibrogenesis.
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Affiliation(s)
- G Sakuntala Warshamana
- Lung Biology Program, Department of Pathology, Tulane University Health Sciences Center, New Orleans, LA 70112-2699, USA
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Affiliation(s)
- Arnold R Brody
- Lung Biology Program, Tulane University Health Sciences Center, New Orleans, LA 70112-2699, USA.
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30
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Brody AR, Warshamana GS, Liu JY, Tsai SY, Pociask DA, Brass DM, Schwartz D. Identifying Fibrosis Susceptibility Genes in Two Strains of Inbred Mice. Chest 2002. [DOI: 10.1016/s0012-3692(15)35449-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Brody AR, Warshamana GS, Pociask DA. Expression of transforming growth factor-beta induces fibroproliferative pulmonary disease in fibrosis-resistant mice. Chest 2001; 120:48S-49S. [PMID: 11451913 DOI: 10.1378/chest.120.1_suppl.s48-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- A R Brody
- Department of Pathology, Tulane University Health Sciences Center, New Orleans, LA 70112-2699, USA
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