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Veit K, Pena T, Klesney-Tait J. CAR-T Treatment for Refractory PTLD after Lung Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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2
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Murthy S, Baruah S, Bowen JL, Keck K, Wagner BA, Buettner GR, Sykes DB, Klesney-Tait J. TREM-1 is required for enhanced OpZ-induced superoxide generation following priming. J Leukoc Biol 2022; 112:457-473. [PMID: 35075692 PMCID: PMC9308838 DOI: 10.1002/jlb.3a0421-212r] [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: 12/10/2021] [Revised: 04/21/2021] [Accepted: 01/04/2022] [Indexed: 11/08/2022] Open
Abstract
Inflammatory agents, microbial products, or stromal factors pre-activate or prime neutrophils to respond to activating stimuli in a rapid and aggressive manner. Primed neutrophils exhibit enhanced chemotaxis, phagocytosis, and respiratory burst when stimulated by secondary activating stimuli. We previously reported that Triggering Receptor Expressed on Myeloid cells-1 (TREM-1) mediates neutrophil effector functions such as increased superoxide generation, transepithelial migration, and chemotaxis. However, it is unclear whether TREM-1 is required for the process of priming itself or for primed responses to subsequent stimulation. To investigate this, we utilized in vitro and in vivo differentiated neutrophils that were primed with TNF-α and then stimulated with the particulate agonist, opsonized zymosan (OpZ). Bone marrow progenitors isolated from WT and Trem-1-/- mice were transduced with estrogen regulated Homeobox8 (ER-Hoxb8) fusion transcription factor and differentiated in vitro into neutrophils following estrogen depletion. The resulting neutrophils expressed high levels of TREM-1 and resembled mature in vivo differentiated neutrophils. The effects of priming on phagocytosis and oxidative burst were determined. Phagocytosis did not require TREM-1 and was not altered by priming. In contrast, priming significantly enhanced OpZ-induced oxygen consumption and superoxide production in WT but not Trem-1-/- neutrophils indicating that TREM-1 is required for primed oxidative burst. TREM-1-dependent effects were not mediated during the process of priming itself as priming enhanced degranulation, ICAM-1 shedding, and IL-1ß release to the same extent in WT and Trem-1-/- neutrophils. Thus, TREM-1 plays a critical role in primed phagocytic respiratory burst and mediates its effects following priming.
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Affiliation(s)
- Shubha Murthy
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Sankar Baruah
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Jayden L. Bowen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Interdisciplinary Graduate Program in Immunology, Medical Scientist Training Program, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Kathy Keck
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Brett A. Wagner
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Garry R. Buettner
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - David B. Sykes
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston and Harvard Stem Cell Institute, Cambridge, MA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
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Stapleton EM, Keck K, Windisch R, Stroik MR, Thurman AL, Zabner J, Thornell IM, Pezzulo AA, Klesney-Tait J, Comellas AP. Vitamin D-mediated effects on airway innate immunity in vitro. PLoS One 2022; 17:e0269647. [PMID: 35666753 PMCID: PMC9170100 DOI: 10.1371/journal.pone.0269647] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/24/2022] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Vitamin D supplementation has been suggested to enhance immunity during respiratory infection season. We tested the effect of active vitamin D (calcitriol) supplementation on key airway innate immune mechanisms in vitro. METHODS Primary human airway epithelial cells (hAECs) grown at the air liquid interface were supplemented with 10-7 M calcitriol for 24 hours (or a time course) and their antimicrobial airway surface liquid (ASL) was tested for pH, viscoscity, and antibacterial and antiviral properties. We also tested hAEC ciliary beat frequency (CBF). Next, we assessed alterations to hAEC gene expression using RNA sequencing, and based on results, we measured neutrophil migration across hAECs. RESULTS Calcitriol supplementation enhanced ASL bacterial killing of Staphylococcus aureus (p = 0.02) but did not enhance its antiviral activity against 229E-CoV. It had no effect on ASL pH or viscosity at three timepoints. Lastly, it did not affect hAEC CBF or neutrophil migration, although there was a trend of enhanced migration in the presence of a neutrophil chemokine (p = 0.09). Supplementation significantly altered hAEC gene expression, primarily of AMP-related genes including CAMP and TREM1. CONCLUSION While vitamin D supplementation did not have effects on many airway innate immune mechanisms, it may provide a useful tool to resolve respiratory bacterial infections.
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Affiliation(s)
- Emma M. Stapleton
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Kathy Keck
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Robert Windisch
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Mallory R. Stroik
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Andrew L. Thurman
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Joseph Zabner
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Ian M. Thornell
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Alejandro A. Pezzulo
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Julia Klesney-Tait
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
| | - Alejandro P. Comellas
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America
- * E-mail:
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Bruse S, Moreau M, Bromberg Y, Jang JH, Wang N, Ha H, Picchi M, Lin Y, Langley RJ, Qualls C, Klesney-Tait J, Zabner J, Leng S, Mao J, Belinsky SA, Xing J, Nyunoya T. Correction to: Whole exome sequencing identifies novel candidate genes that modify chronic obstructive pulmonary disease susceptibility. Hum Genomics 2021; 15:74. [PMID: 34965893 PMCID: PMC8717643 DOI: 10.1186/s40246-021-00373-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Shannon Bruse
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Michael Moreau
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Yana Bromberg
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Jun-Ho Jang
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA.,Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA
| | - Nan Wang
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Hongseok Ha
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA
| | - Maria Picchi
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Yong Lin
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Raymond J Langley
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Clifford Qualls
- Biomedical Research Institute of New Mexico, Albuquerque, NM, USA
| | | | - Joseph Zabner
- Department of Medicine, University of Iowa, Iowa City, IA, USA
| | - Shuguang Leng
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Jenny Mao
- Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA
| | - Steven A Belinsky
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA
| | - Jinchuan Xing
- Department of Genetics, Rutgers, The State University of New Jersey, 145 Bevier Road, Piscataway, NJ, 08854, USA.
| | - Toru Nyunoya
- Lovelace Respiratory Research Institute, 2425 Ridgecrest Drive SE, Albuquerque, NM, 87108, USA. .,Department of Internal Medicine, University of New Mexico and New Mexico VA Health Care System, Albuquerque, NM, USA.
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5
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Kim MC, Borcherding N, Ahmed KK, Voigt AP, Vishwakarma A, Kolb R, Kluz PN, Pandey G, De U, Drashansky T, Helm EY, Zhang X, Gibson-Corley KN, Klesney-Tait J, Zhu Y, Lu J, Lu J, Huang X, Xiang H, Cheng J, Wang D, Wang Z, Tang J, Hu J, Wang Z, Liu H, Li M, Zhuang H, Avram D, Zhou D, Bacher R, Zheng SG, Wu X, Zakharia Y, Zhang W. CD177 modulates the function and homeostasis of tumor-infiltrating regulatory T cells. Nat Commun 2021; 12:5764. [PMID: 34599187 PMCID: PMC8486774 DOI: 10.1038/s41467-021-26091-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [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: 01/03/2020] [Accepted: 09/17/2021] [Indexed: 12/23/2022] Open
Abstract
Regulatory T (Treg) cells are one of the major immunosuppressive cell types in cancer and a potential target for immunotherapy, but targeting tumor-infiltrating (TI) Treg cells has been challenging. Here, using single-cell RNA sequencing of immune cells from renal clear cell carcinoma (ccRCC) patients, we identify two distinct transcriptional fates for TI Treg cells, Fate-1 and Fate-2. The Fate-1 signature is associated with a poorer prognosis in ccRCC and several other solid cancers. CD177, a cell surface protein normally expressed on neutrophil, is specifically expressed on Fate-1 TI Treg cells in several solid cancer types, but not on other TI or peripheral Treg cells. Mechanistically, blocking CD177 reduces the suppressive activity of Treg cells in vitro, while Treg-specific deletion of Cd177 leads to decreased tumor growth and reduced TI Treg frequency in mice. Our results thus uncover a functional CD177+ TI Treg population that may serve as a target for TI Treg-specific immunotherapy.
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MESH Headings
- Animals
- Base Sequence
- Carcinogenesis/genetics
- Carcinogenesis/pathology
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/immunology
- Carcinoma, Renal Cell/pathology
- GPI-Linked Proteins/deficiency
- GPI-Linked Proteins/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Homeostasis
- Humans
- Isoantigens/metabolism
- Kidney Neoplasms/genetics
- Kidney Neoplasms/immunology
- Kidney Neoplasms/pathology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Mice, Knockout
- Prognosis
- Receptors, Cell Surface/deficiency
- Receptors, Cell Surface/metabolism
- Single-Cell Analysis
- T-Lymphocytes, Regulatory/metabolism
- Transcription, Genetic
- Mice
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Affiliation(s)
- Myung-Chul Kim
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Nicholas Borcherding
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- Cancer Biology Graduate Program, University of Iowa, Iowa City, IA, 52242, USA
- Medical Scientist Training Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Kawther K Ahmed
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- College of Pharmacy, University of Baghdad, Department of Pharmaceutics, Baghdad, 10071, Iraq
| | - Andrew P Voigt
- Medical Scientist Training Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Ajaykumar Vishwakarma
- Cancer Biology Graduate Program, University of Iowa, Iowa City, IA, 52242, USA
- Department of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, IA52242, USA
| | - Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Paige N Kluz
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
| | - Gaurav Pandey
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Umasankar De
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Theodore Drashansky
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
| | - Eric Y Helm
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
| | - Xin Zhang
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, Fl, 32610, USA
| | - Katherine N Gibson-Corley
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232-2130, USA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Yuwen Zhu
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Jinglu Lu
- Department of Breast Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, 200127, China
| | - Jinsong Lu
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xian Huang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hongrui Xiang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jinke Cheng
- Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Dongyang Wang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Zheng Wang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jian Tang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jiajia Hu
- Department of Nuclear Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zhengting Wang
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hua Liu
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Mingjia Li
- Department of Medicine, Division of Rheumatology & Clinical Immunology, University of Florida, 1600 Archer Road, Gainesville, FL, 32610-0275, USA
| | - Haoyang Zhuang
- Department of Medicine, Division of Rheumatology & Clinical Immunology, University of Florida, 1600 Archer Road, Gainesville, FL, 32610-0275, USA
| | - Dorina Avram
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, 32610, Gainesville, FL, 32610, USA
- Department of Immunology, Moffitt Cancer Center, Tampa, FL, 33612, USA
| | - Daohong Zhou
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, Fl, 32610, USA
| | - Rhonda Bacher
- Department of Biostatistics, University of Florida, Gainesville, FL, 32610, USA
| | - Song Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, 43210, USA
| | - Xuefeng Wu
- Department of Breast Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, 200127, China.
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yousef Zakharia
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232-2130, USA.
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32610, USA.
- UF Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA.
- Department of Pathology, University of Iowa, Iowa City, IA, 52242, USA.
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6
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Hage CA, Klesney-Tait J, Wille K, Arcasoy S, Yung G, Hertz M, Chan KM, Morrell M, Goldberg H, Vedantham S, Derfler MC, Commean P, Berman K, Spitznagel E, Atkinson J, Despotis G. Extracorporeal photopheresis to attenuate decline in lung function due to refractory obstructive allograft dysfunction. Transfus Med 2021; 31:292-302. [PMID: 33955079 PMCID: PMC8453798 DOI: 10.1111/tme.12779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/18/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND This study was designed to prospectively evaluate the efficacy of extracorporeal photopheresis (ECP) to attenuate the rate of decline of FEV1 in lung transplant recipients with refractory bronchiolitis obliterans. Due to an observed higher than expected early mortality, a preliminary analysis was performed. STUDY DESIGN AND METHODS Subjects from 10 lung transplant centres were assigned to ECP treatment or to observation based on spirometric criteria, with potential crossover for those under observation. The primary endpoint of this study was to assess response to ECP (i.e., greater than a 50% decrease in the rate of FEV1 decline) before and 6 months after initiation of ECP. Mortality was also evaluated 6 and 12 months after enrolment as a secondary endpoint. RESULTS Of 44 enrolled subjects, 31 were assigned to ECP treatment while 13 were initially assigned to observation on a non-random basis using specific spirometric inclusion criteria (seven of the observation patients subsequently crossed over to receive ECP). Of evaluable patients, 95% of patients initially assigned to treatment responded to ECP with rates of FEV1 decline that were reduced by 93% in evaluable ECP-treated patients. Mortality rates (percentages) at 6 and 12 months after enrolment was 32% and 41%, respectively. The most common (92%) primary cause of death was respiratory or graft failure. Significantly (p = 0.002) higher rates of FEV1 decline were observed in the non-survivors (-212 ± 177 ml/month) when compared to the survivors (-95 ± 117 ml/month) 12 months after enrolment. In addition, 18 patients with bronchiolitis obliterans syndrome (BOS) diagnosis within 6 months of enrolment had lost 38% of their baseline lung function at BOS diagnosis and 50% of their lung function at enrolment. CONCLUSIONS These analyses suggest that earlier detection and treatment of BOS should be considered to appreciate improved outcomes with ECP.
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Affiliation(s)
| | - Chadi A Hage
- Department of Medicine, Division of Pulmonology, Indiana University, Bloomington, Indiana, USA
| | - Julia Klesney-Tait
- Department of Medicine, Division of Pulmonology, University of Iowa, Iowa City, Iowa, USA
| | - Keith Wille
- Department of Medicine, Division of Pulmonology, University of Alabama, Tuscaloosa, Alabama, USA
| | - Selim Arcasoy
- Department of Medicine, Division of Pulmonology, Columbia University of Alabama, Orange Beach, Alabama, USA
| | - Gordon Yung
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, La Jolla, California, USA
| | - Marshall Hertz
- Department of Medicine, Division of Pulmonology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Kevin M Chan
- Department of Medicine, Division of Pulmonology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matt Morrell
- Department of Medicine, Division of Pulmonology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Hilary Goldberg
- Harvard Medical School, Department of Medicine, Division of Pulmonology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Suresh Vedantham
- Clinical Coordinating Center, Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, Missouri, USA
| | - Mary Clare Derfler
- Clinical Coordinating Center, Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, Missouri, USA
| | - Paul Commean
- Data Coordinating Center, Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, Missouri, USA
| | - Keith Berman
- Health Research Associates, Mountlake Terrace, Washington, USA
| | - Ed Spitznagel
- Department of Mathematics, Washington University, St. Louis, Missouri, USA
| | - Jeff Atkinson
- Department of Internal Medicine, Division of Pulmonary Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - George Despotis
- Department of Pathology & Immunology, Division of Laboratory & Genomic Medicine, Department of Anesthesiology, Division of Cardiothoracic Anesthesiology, Washington University School of Medicine, St. Louis, Missouri, USA
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7
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Wei Y, Dong W, Jackson J, Ho TC, Le Saux CJ, Brumwell A, Li X, Klesney-Tait J, Cohen ML, Wolters PJ, Chapman HA. Blocking LOXL2 and TGFβ1 signalling induces collagen I turnover in precision-cut lung slices derived from patients with idiopathic pulmonary fibrosis. Thorax 2021; 76:729-732. [PMID: 33472968 DOI: 10.1136/thoraxjnl-2020-215745] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/17/2020] [Accepted: 12/17/2020] [Indexed: 01/13/2023]
Abstract
We recently identified epigallocatechin gallate (EGCG), a trihydroxyphenolic compound, as a dual inhibitor of lysyl oxidase-like2 and transforming growth factor-β1 (TGFβ1) receptor kinase that when given orally to patients with idiopathic pulmonary fibrosis (IPF) reversed profibrotic biomarkers in their diagnostic biopsies. Here, we extend these findings to advanced pulmonary fibrosis using cultured precision-cut lung slices from explants of patients with IPF undergoing transplantation. During these experiments, we were surprised to discover that not only did EGCG attenuate TGFβ1 signalling and new collagen accumulation but also activated matrix metalloproteinase-dependent collagen I turnover, raising the possibility of slow fibrosis resolution with continued treatment.
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Affiliation(s)
- Ying Wei
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Wenting Dong
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Julia Jackson
- Infectious Disease and Cell Atlas Initiatives, Chan Zuckerberg Biohub, San Francisco, California, USA
| | - Tsung-Che Ho
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Claude Jourdan Le Saux
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Alexis Brumwell
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Xiaopeng Li
- Department of Pediatrics and Human Development, Michigan State University, East Lansing, Michigan, USA
| | - Julia Klesney-Tait
- Internal Medicine, University of Iowa Roy J and Lucille A Carver College of Medicine, Iowa City, Iowa, USA
| | - Max L Cohen
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Paul J Wolters
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA
| | - Harold A Chapman
- Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, California, USA .,Cardiovascular Research Institute, San Francisco, California, USA
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8
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Kaur A, Eberlein M, Klesney-Tait J, Durkin MM, Wheat LJ, Gajurel K. Rabbit Antithymocyte Globulin Causes Blastomyces and Histoplasma Antigenemia. Open Forum Infect Dis 2019; 6:ofz165. [PMID: 31065562 PMCID: PMC6499897 DOI: 10.1093/ofid/ofz165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/26/2019] [Indexed: 11/30/2022] Open
Abstract
Rabbit antithymocyte globulin (rATG) is known to yield false-positive Histoplasma antigenemia. The fourth generation MiraVista Histoplasma antigen assay was modified to block this effect (MiraVista Diagnostics, Indianapolis, Indiana). We report a case of rATG-induced false-positive Blastomyces and Histoplasma antigenemia in a lung transplant recipient despite modifications of these antigen assays.
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Affiliation(s)
- Amrit Kaur
- Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Michael Eberlein
- Division of Pulmonology and Occupational Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Julia Klesney-Tait
- Division of Pulmonology and Occupational Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | | | | | - Kiran Gajurel
- Division of Infectious Diseases, Carver College of Medicine, University of Iowa, Iowa City, Iowa
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9
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Baruah S, Murthy S, Keck K, Galvan I, Prichard A, Allen LAH, Farrelly M, Klesney-Tait J. TREM-1 regulates neutrophil chemotaxis by promoting NOX-dependent superoxide production. J Leukoc Biol 2019; 105:1195-1207. [PMID: 30667543 DOI: 10.1002/jlb.3vma0918-375r] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/01/2018] [Accepted: 12/13/2018] [Indexed: 01/15/2023] Open
Abstract
Neutrophil migration across tissue barriers to the site of injury involves integration of complex danger signals and is critical for host survival. Numerous studies demonstrate that these environmental signals fundamentally alter the responses of extravasated or "primed" neutrophils. Triggering receptor expressed on myeloid cells 1 (TREM-1) plays a central role in modulating inflammatory signaling and neutrophil migration into the alveolar airspace. Using a genetic approach, we examined the role of TREM-1 in extravasated neutrophil function. Neutrophil migration in response to chemoattractants is dependent upon multiple factors, including reactive oxygen species (ROS) generated either extracellularly by epithelial cells or intracellularly by NADPH oxidase (NOX). We, therefore, questioned whether ROS were responsible for TREM-1-mediated regulation of migration. Thioglycollate-elicited peritoneal neutrophils isolated from wild-type (WT) and TREM-1-deficient mice were stimulated with soluble and particulate agonists. Using electron paramagnetic resonance spectroscopy, we demonstrated that NOX2-dependent superoxide production is impaired in TREM-1-deficient neutrophils. Consistent with these findings, we confirmed with Clark electrode that TREM-1-deficient neutrophils consume less oxygen. Next, we demonstrated that TREM-1 deficient neutrophils have impaired directional migration to fMLP and zymosan-activated serum as compared to WT neutrophils and that deletion or inhibition of NOX2 in WT but not TREM-1-deficient neutrophils significantly impaired direction sensing. Finally, TREM-1 deficiency resulted in decreased protein kinase B (AKT) activation. Thus, TREM-1 regulates neutrophil migratory properties, in part, by promoting AKT activation and NOX2-dependent superoxide production. These findings provide the first mechanistic evidence as to how TREM-1 regulates neutrophil migration.
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Affiliation(s)
- Sankar Baruah
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Shubha Murthy
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Kathy Keck
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Isabel Galvan
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Allan Prichard
- Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.,Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Lee-Ann H Allen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.,Department of Microbiology and Immunology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.,Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.,Iowa City VA Healthcare System, Iowa City, Iowa, USA
| | - Mary Farrelly
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
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10
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Urak KT, Blanco GN, Shubham S, Lin LH, Dassie JP, Thiel WH, Chen Y, Sonkar VK, Lei B, Murthy S, Gutierrez WR, Wilson ME, Stiber JA, Klesney-Tait J, Dayal S, Miller FJ, Giangrande PH. RNA inhibitors of nuclear proteins responsible for multiple organ dysfunction syndrome. Nat Commun 2019; 10:116. [PMID: 30631065 PMCID: PMC6328615 DOI: 10.1038/s41467-018-08030-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 12/12/2018] [Indexed: 12/30/2022] Open
Abstract
The development of multiple organ dysfunction syndrome (MODS) following infection or tissue injury is associated with increased patient morbidity and mortality. Extensive cellular injury results in the release of nuclear proteins, of which histones are the most abundant, into the circulation. Circulating histones are implicated as essential mediators of MODS. Available anti-histone therapies have failed in clinical trials due to off-target effects such as bleeding and toxicity. Here, we describe a therapeutic strategy for MODS based on the neutralization of histones by chemically stabilized nucleic acid bio-drugs (aptamers). Systematic evolution of ligands by exponential enrichment technology identified aptamers that selectively bind those histones responsible for MODS and do not bind to serum proteins. We demonstrate the efficacy of histone-specific aptamers in human cells and in a murine model of MODS. These aptamers could have a significant therapeutic benefit in the treatment of multiple diverse clinical conditions associated with MODS.
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Affiliation(s)
- Kevin T Urak
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Molecular & Cellular Biology Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Giselle N Blanco
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | | | - Li-Hsien Lin
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Justin P Dassie
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - William H Thiel
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Abboud Cardiovascular Research Center, University of Iowa, Iowa City, IA, 52242, USA
| | - Yani Chen
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | | | - Beilei Lei
- Department of Medicine, Duke University, Durham, NC, 27708, USA
| | - Shubha Murthy
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Wade R Gutierrez
- Medical Scientist Training Program, University of Iowa, Iowa City, IA, 52242, USA
| | - Mary E Wilson
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Department of Microbiology, University of Iowa, Iowa City, IA, 52242, USA.,Veteran's Affairs Medical Center, University of Iowa, Iowa City, IA, 52241, USA
| | | | | | - Sanjana Dayal
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Francis J Miller
- Department of Medicine, Duke University, Durham, NC, 27708, USA. .,Pharmacology and Cancer Biology Program, Duke University, Durham, NC, 27708, USA. .,Deptartment of Medicine, Veterans Administration Medical Center, Durham, NC, 27705, USA.
| | - Paloma H Giangrande
- Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA. .,Molecular & Cellular Biology Program, University of Iowa, Iowa City, IA, 52242, USA. .,Abboud Cardiovascular Research Center, University of Iowa, Iowa City, IA, 52242, USA. .,Interdisciplinary Graduate Program in Genetics, University of Iowa, Iowa City, IA, 52242, USA. .,Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, 52242, USA. .,Radiation Oncology, University of Iowa, Iowa City, IA, 52242, USA. .,Environmental Health Sciences Research Center (EHSRC), University of Iowa, Iowa City, IA, 52242, USA.
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11
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Baruah S, Keck K, Vrenios M, Pope MR, Pearl M, Doerschug K, Klesney-Tait J. Identification of a Novel Splice Variant Isoform of TREM-1 in Human Neutrophil Granules. J Immunol 2015; 195:5725-31. [PMID: 26561551 DOI: 10.4049/jimmunol.1402713] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 10/09/2015] [Indexed: 01/28/2023]
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) is critical for inflammatory signal amplification. Humans have two forms of TREM-1: a membrane receptor, associated with the adaptor DAP12, and a soluble receptor detected at times of infection. The membrane receptor isoform acts synergistically with the TLR pathway to promote cytokine secretion and neutrophil migration, whereas the soluble receptor functions as a counterregulatory molecule. In multiple models of sepsis, exogenous administration of soluble forms of TREM-1 attenuates inflammation and markedly improves survival. Despite intense interest in soluble TREM-1, both as a clinical predictor of survival and as a therapeutic tool, the origin of native soluble TREM-1 remains controversial. Using human neutrophils, we identified a 15-kDa TREM-1 isoform in primary (azurophilic) and secondary (specific) granules. Mass spectrometric analysis, ELISA, and immunoblot confirm that the 15-kDa protein is a novel splice variant form of TREM-1 (TREM-1sv). Neutrophil stimulation with Pseudomonas aeruginosa, LPS, or PAM(3)Cys4 resulted in degranulation and release of TREM-1sv. The addition of exogenous TREM-1sv inhibited TREM-1 receptor-mediated proinflammatory cytokine production. Thus, these data reveal that TREM-1 isoforms simultaneously activate and inhibit inflammation via the canonical membrane TREM-1 molecule and this newly discovered granular isoform, TREM-1sv.
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Affiliation(s)
- Sankar Baruah
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242
| | - Kathy Keck
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242
| | - Michelle Vrenios
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242
| | - Marshall R Pope
- Carver College of Medicine Proteomics Facility, University of Iowa, Iowa City, IA 52242; and
| | | | - Kevin Doerschug
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242
| | - Julia Klesney-Tait
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242;
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12
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Klesney-Tait J, Eberlein M, Geist L, Keech J, Zabner J, Gruber PJ, Iannettoni MD, Parekh K. Starting a lung transplant program: a roadmap for long-term excellence. Chest 2015; 147:1435-1443. [PMID: 25940255 DOI: 10.1378/chest.14-2241] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Lung transplantation is an effective therapy for many patients with end-stage lung disease. Few centers across the United States offer this therapy, as a successful lung transplant program requires significant institutional resources and specialized personnel. Analysis of the United Network of Organ Sharing database reveals that the failure rate of new programs exceeds 40%. These data suggest that an accurate assessment of program viability as well as a strategy to continuously assess defined quality measures is needed. As part of strategic planning, regional availability of recipient and donors should be assessed. Additionally, analysis of institutional expertise at the physician, support staff, financial, and administrative levels is necessary. In May of 2007, we started a new lung transplant program at the University of Iowa Hospitals and Clinics and have performed 101 transplants with an average recipient 1-year survival of 91%, placing our program among the top in the country for the past 5 years. Herein, we review internal and external factors that impact the viability of a new lung transplant program. We discuss the use of four prospectively identified quality measures: volume, recipient outcomes, financial solvency, and academic contribution as one approach to achieve programmatic excellence.
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Affiliation(s)
- Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa Carver College of Medicine.
| | - Michael Eberlein
- Department of Internal Medicine, University of Iowa Carver College of Medicine
| | - Lois Geist
- Department of Internal Medicine, University of Iowa Carver College of Medicine; Veterans Affairs Medical Center, Iowa City, IA
| | - John Keech
- Department of Cardiothoracic Surgery, University of Iowa Carver College of Medicine; Veterans Affairs Medical Center, Iowa City, IA
| | - Joseph Zabner
- Department of Internal Medicine, University of Iowa Carver College of Medicine
| | - Peter J Gruber
- Department of Cardiothoracic Surgery, University of Iowa Carver College of Medicine
| | - Mark D Iannettoni
- Department of Cardiovascular Sciences, East Carolina University, Greenville, NC
| | - Kalpaj Parekh
- Department of Cardiothoracic Surgery, University of Iowa Carver College of Medicine; Veterans Affairs Medical Center, Iowa City, IA
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13
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Thiel WH, Esposito CL, Dickey DD, Dassie JP, Long ME, Adam J, Streeter J, Schickling B, Takapoo M, Flenker KS, Klesney-Tait J, de Franciscis V, Miller FJ, Giangrande PH. 61. Vascular Smooth Muscle Cell RNA Aptamers for the Treatment of Cardiovascular Disease. Mol Ther 2015. [DOI: 10.1016/s1525-0016(16)33666-8] [Citation(s) in RCA: 1] [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: 10/20/2022] Open
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14
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Stuart BD, Choi J, Zaidi S, Xing C, Holohan B, Chen R, Choi M, Dharwadkar P, Torres F, Girod CE, Weissler J, Fitzgerald J, Kershaw C, Klesney-Tait J, Mageto Y, Shay JW, Ji W, Bilguvar K, Mane S, Lifton RP, Garcia CK. Exome sequencing links mutations in PARN and RTEL1 with familial pulmonary fibrosis and telomere shortening. Nat Genet 2015; 47:512-7. [PMID: 25848748 PMCID: PMC4414891 DOI: 10.1038/ng.3278] [Citation(s) in RCA: 323] [Impact Index Per Article: 35.9] [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: 09/25/2014] [Accepted: 03/17/2015] [Indexed: 12/16/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is an age-related disease featuring progressive lung scarring. To elucidate the molecular basis of IPF, we performed exome sequencing of familial kindreds with pulmonary fibrosis. Gene burden analysis comparing 78 European cases and 2,816 controls implicated PARN, an exoribonuclease with no previous connection to telomere biology or disease, with five new heterozygous damaging mutations in unrelated cases and none in controls (P = 1.3 × 10(-8)); mutations were shared by all affected relatives (odds in favor of linkage = 4,096:1). RTEL1, an established locus for dyskeratosis congenita, harbored significantly more new damaging and missense variants at conserved residues in cases than in controls (P = 1.6 × 10(-6)). PARN and RTEL1 mutation carriers had shortened leukocyte telomere lengths, and we observed epigenetic inheritance of short telomeres in family members. Together, these genes explain ~7% of familial pulmonary fibrosis and strengthen the link between lung fibrosis and telomere dysfunction.
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Affiliation(s)
- Bridget D. Stuart
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jungmin Choi
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Yale School of Medicine, New Haven, Connecticut, USA
| | - Samir Zaidi
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Yale School of Medicine, New Haven, Connecticut, USA
| | - Chao Xing
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Brody Holohan
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Rui Chen
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Mihwa Choi
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Pooja Dharwadkar
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Fernando Torres
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Carlos E. Girod
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jonathan Weissler
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - John Fitzgerald
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Corey Kershaw
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Yolanda Mageto
- Department of Internal Medicine, University of Vermont College of Medicine, Burlington, Vermont, USA
| | - Jerry W. Shay
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Weizhen Ji
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kaya Bilguvar
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Connecticut, USA
| | - Shrikant Mane
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Connecticut, USA
| | - Richard P. Lifton
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Yale School of Medicine, New Haven, Connecticut, USA
- Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Christine Kim Garcia
- Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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15
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Xie Q, Klesney-Tait J, Keck K, Parlet C, Borcherding N, Kolb R, Li W, Tygrett L, Waldschmidt T, Olivier A, Chen S, Liu GH, Li X, Zhang W. Characterization of a novel mouse model with genetic deletion of CD177. Protein Cell 2014; 6:117-26. [PMID: 25359465 PMCID: PMC4312768 DOI: 10.1007/s13238-014-0109-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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] [Received: 09/01/2014] [Accepted: 09/25/2014] [Indexed: 01/12/2023] Open
Abstract
Neutrophils play an essential role in the innate immune response to infection. Neutrophils migrate from the vasculature into the tissue in response to infection. Recently, a neutrophil cell surface receptor, CD177, was shown to help mediate neutrophil migration across the endothelium through interactions with PECAM1. We examined a publicly available gene array dataset of CD177 expression from human neutrophils following pulmonary endotoxin instillation. Among all 22,214 genes examined, CD177 mRNA was the most upregulated following endotoxin exposure. The high level of CD177 expression is also maintained in airspace neutrophils, suggesting a potential involvement of CD177 in neutrophil infiltration under infectious diseases. To determine the role of CD177 in neutrophils in vivo, we constructed a CD177-genetic knockout mouse model. The mice with homozygous deletion of CD177 have no discernible phenotype and no significant change in immune cells, other than decreased neutrophil counts in peripheral blood. We examined the role of CD177 in neutrophil accumulation using a skin infection model with Staphylococcus aureus. CD177 deletion reduced neutrophil counts in inflammatory skin caused by S. aureus. Mechanistically we found that CD177 deletion in mouse neutrophils has no significant impact in CXCL1/KC- or fMLP-induced migration, but led to significant cell death. Herein we established a novel genetic mouse model to study the role of CD177 and found that CD177 plays an important role in neutrophils.
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Affiliation(s)
- Qing Xie
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
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16
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Klesney-Tait J, Keck K, Li X, Gilfillan S, Otero K, Baruah S, Meyerholz DK, Varga SM, Knudson CJ, Moninger TO, Moreland J, Zabner J, Colonna M. Transepithelial migration of neutrophils into the lung requires TREM-1. J Clin Invest 2012; 123:138-49. [PMID: 23241959 DOI: 10.1172/jci64181] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 10/11/2012] [Indexed: 11/17/2022] Open
Abstract
Acute respiratory infections are responsible for more than 4 million deaths each year. Neutrophils play an essential role in the innate immune response to lung infection. These cells have an armamentarium of pattern recognition molecules and antimicrobial agents that identify and eliminate pathogens. In the setting of infection, neutrophil triggering receptor expressed on myeloid cells 1 (TREM-1) amplifies inflammatory signaling. Here we demonstrate for the first time that TREM-1 also plays an important role in transepithelial migration of neutrophils into the airspace. We developed a TREM-1/3-deficient mouse model of pneumonia and found that absence of TREM-1/3 markedly increased mortality following Pseudomonas aeruginosa challenge. Unexpectedly, TREM-1/3 deficiency resulted in increased local and systemic cytokine production. TREM-1/3-deficient neutrophils demonstrated intact bacterial killing, phagocytosis, and chemotaxis; however, histologic examination of TREM-1/3-deficient lungs revealed decreased neutrophil infiltration of the airways. TREM-1/3-deficient neutrophils effectively migrated across primary endothelial cell monolayers but failed to migrate across primary airway epithelia grown at the air-liquid interface. These data define a new function for TREM-1 in neutrophil migration across airway epithelial cells and suggest that it amplifies inflammation through targeted neutrophil migration into the lung.
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Affiliation(s)
- Julia Klesney-Tait
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, 200 Hawkins Dr., Iowa City, Iowa 52242, USA.
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17
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Eberlein M, Arnaoutakis GJ, Yarmus L, Feller-Kopman D, Dezube R, Chahla MF, Bolukbas S, Reed RM, Klesney-Tait J, Parekh KR, Merlo CA, Shah AS, Orens JB, Brower RG. The effect of lung size mismatch on complications and resource utilization after bilateral lung transplantation. J Heart Lung Transplant 2012; 31:492-500. [DOI: 10.1016/j.healun.2011.12.009] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/15/2011] [Accepted: 12/14/2011] [Indexed: 12/27/2022] Open
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18
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Dickey DD, Excoffon KJDA, Koerber JT, Bergen J, Steines B, Klesney-Tait J, Schaffer DV, Zabner J. Enhanced sialic acid-dependent endocytosis explains the increased efficiency of infection of airway epithelia by a novel adeno-associated virus. J Virol 2011; 85:9023-30. [PMID: 21697483 PMCID: PMC3165813 DOI: 10.1128/jvi.05154-11] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [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: 05/20/2011] [Accepted: 06/08/2011] [Indexed: 11/20/2022] Open
Abstract
We previously used directed evolution in human airway epithelia to create adeno-associated virus 2.5T (AAV2.5T), a highly infectious chimera of AAV2 and AAV5 with one point mutation (A581T). We hypothesized that the mechanism for its increased infection may be a higher binding affinity to the surface of airway epithelia than its parent AAV5. Here, we show that, like AAV5, AAV2.5T, uses 2,3N-linked sialic acid as its primary receptor; however, AAV2.5T binds to the apical surface of human airway epithelia at higher levels and has more receptors than AAV5. Furthermore, its binding affinity is similar to that of AAV5. An alternative hypothesis is that AAV2.5T interaction with 2,3N-linked sialic acid may instead be required for cellular internalization. Consistent with this, AAV2.5T binds but fails to be internalized by CHO cells that lack surface expression of sialic acid. Moreover, whereas AAV2.5T binds similarly to human (rich in 2,3N-linked sialic acid) and pig airway epithelia (2,6N-linked sialic acid), significantly more virus was internalized by human airway. Subsequent transduction correlated with the level of internalized rather than surface-bound virus. We also found that human airway epithelia internalized significantly more AAV2.5T than AAV5. These data suggest that AAV2.5T has evolved to utilize specific 2,3N-linked sialic acid residues on the surface of airway epithelia that mediate rapid internalization and subsequent infection. Thus, sialic acid serves as not just an attachment factor but is also required for AAV2.5T internalization, possibly representing an important rate-limiting step for other viruses that use sialic acids.
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Affiliation(s)
- David D. Dickey
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | | | - James T. Koerber
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720-1462
| | - Jamie Bergen
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720-1462
| | - Benjamin Steines
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | - Julia Klesney-Tait
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
| | - David V. Schaffer
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720-1462
| | - Joseph Zabner
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242
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19
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Pezzulo AA, Gutiérrez J, Duschner KS, McConnell KS, Taft PJ, Ernst SE, Yahr TL, Rahmouni K, Klesney-Tait J, Stoltz DA, Zabner J. Glucose depletion in the airway surface liquid is essential for sterility of the airways. PLoS One 2011; 6:e16166. [PMID: 21311590 PMCID: PMC3029092 DOI: 10.1371/journal.pone.0016166] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [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: 09/09/2010] [Accepted: 12/08/2010] [Indexed: 11/19/2022] Open
Abstract
Diabetes mellitus predisposes the host to bacterial infections. Moreover, hyperglycemia has been shown to be an independent risk factor for respiratory infections. The luminal surface of airway epithelia is covered by a thin layer of airway surface liquid (ASL) and is normally sterile despite constant exposure to bacteria. The balance between bacterial growth and killing in the airway determines the outcome of exposure to inhaled or aspirated bacteria: infection or sterility. We hypothesized that restriction of carbon sources--including glucose--in the ASL is required for sterility of the lungs. We found that airway epithelia deplete glucose from the ASL via a novel mechanism involving polarized expression of GLUT-1 and GLUT-10, intracellular glucose phosphorylation, and low relative paracellular glucose permeability in well-differentiated cultures of human airway epithelia and in segments of airway epithelia excised from human tracheas. Moreover, we found that increased glucose concentration in the ASL augments growth of P. aeruginosa in vitro and in the lungs of hyperglycemic ob/ob and db/db mice in vivo. In contrast, hyperglycemia had no effect on intrapulmonary bacterial growth of a P. aeruginosa mutant that is unable to utilize glucose as a carbon source. Our data suggest that depletion of glucose in the airway epithelial surface is a novel mechanism for innate immunity. This mechanism is important for sterility of the airways and has implications in hyperglycemia and conditions that result in disruption of the epithelial barrier in the lung.
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Affiliation(s)
- Alejandro A. Pezzulo
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Jeydith Gutiérrez
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Kelly S. Duschner
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Kelly S. McConnell
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Peter J. Taft
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Sarah E. Ernst
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Timothy L. Yahr
- Department of Microbiology, University of Iowa, Iowa City, Iowa, United States of America
| | - Kamal Rahmouni
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Julia Klesney-Tait
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - David A. Stoltz
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Joseph Zabner
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, United States of America
- * E-mail:
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Kollef MH, Anand N, Zuick S, Klesney-Tait J. Soluble triggering receptor expressed on myeloid cells 1 and the diagnosis of ventilator-associated pneumonia. Chest 2009; 136:320. [PMID: 19584220 DOI: 10.1378/chest.09-0755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Marin H Kollef
- Washington University School of Medicine, St. Louis, MO.
| | - Nitin Anand
- Washington University School of Medicine, St. Louis, MO
| | - Scott Zuick
- Washington University School of Medicine, St. Louis, MO
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Anand NJ, Zuick S, Klesney-Tait J, Kollef MH. Diagnostic implications of soluble triggering receptor expressed on myeloid cells-1 in BAL fluid of patients with pulmonary infiltrates in the ICU. Chest 2008; 135:641-647. [PMID: 18849395 DOI: 10.1378/chest.08-1829] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE Prospective single-center study to determine whether the presence of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) has diagnostic utility in patients with pulmonary infiltrates receiving mechanical ventilation and undergoing BAL. DESIGN Prospective cohort study. SETTING Barnes-Jewish Hospital, a 1,200-bed urban teaching hospital. PATIENTS Adult patients with acute respiratory failure undergoing BAL for pulmonary infiltrates. INTERVENTIONS BAL fluid measurement of sTREM-1 concentration using a Quantikine Human TREM-1 Immunoassay (R&D Systems; Minneapolis, MN). MEASUREMENTS AND MAIN RESULTS A total of 105 consecutive patients receiving mechanical ventilation and undergoing BAL were enrolled. Of those, 19 patients (18.1%) met definite microbiologic criteria for bacterial or fungal ventilator-associated pneumonia (VAP). Though the mean sTREM-1 concentration was greater in patients with definite VAP (n = 19; 171.9 +/- 158.7 pg/mL) than in patients with definite absence of VAP (n = 21; 96.7 +/- 76.2 pg/mL), this difference was not statistically significant (p = 0.06). A cutoff value for sTREM-1 > 200 pg/mL yielded a diagnostic sensitivity of 42.1% and a specificity of 75.6% for definite VAP. Patients with alveolar hemorrhage had the greatest values for sTREM-1 concentration (n = 9; 555 +/- 440 pg/mL). Receiver operating curve analysis and multivariate logistic regression analysis demonstrated that measurement of sTREM-1 was inferior to clinical parameters for the diagnosis of VAP. CONCLUSIONS Measurement of sTREM-1 in BAL fluid appears to have minimal diagnostic value for VAP.
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Affiliation(s)
- Nitin J Anand
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO
| | - Scott Zuick
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO
| | - Julia Klesney-Tait
- Division of Pulmonary, Occupational Medicine, and Critical Care, University of Iowa Hospitals and Clinics, Iowa City, IA
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO.
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Field E, Klesney-Tait J, Parekh K, Zavazava N. 434: Revising the Virtual Crossmatch Algorithm: The Predictive Value of Solid-Phase Antibody Detection Assays. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Affiliation(s)
- Julia Klesney-Tait
- University of Iowa Hospitals and Clinics, Pulmonary, Occupational Medicine, and Critical Care, Iowa City, IA 52242-1081, USA.
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Tassi I, Klesney-Tait J, Colonna M. Dissecting natural killer cell activation pathways through analysis of genetic mutations in human and mouse. Immunol Rev 2007; 214:92-105. [PMID: 17100878 DOI: 10.1111/j.1600-065x.2006.00463.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Natural killer (NK) cell cytotoxicity is mediated by multiple germ line-encoded activating receptors that recognize specific ligands expressed by tumor cells and virally infected cells. These activating receptors are opposed by NK inhibitory receptors, which recognize major histocompatibility complex class I molecules on potential targets, raising the threshold for NK cell activation. Once an abnormal cell has been detected, NK cells are the sentinel source of cytolytic mediators, such as granzymes and perforins, as well as interferon-gamma, which can polarize the immune response to a T-helper 1 cell type. Activation signals are transmitted by adhesion-dependent pathways, immunoreceptor tyrosine-based activation motif (ITAM)-dependent pathways, DAP10 ITAM-independent pathways, and by signaling through immunoreceptor tyrosine-based switch motifs. These pathways activate downstream signaling partners to trigger NK cell cytotoxicity. Some of these downstream molecules are unique to the various pathways, and some of these molecules are shared. Because of the complexity of signals involved in NK cell-target cell interaction, the generation of mice with targeted mutations in signaling molecules involved in adhesion, activation, or inhibition is essential for a precise dissection of the mechanisms regulating NK cell effector functions. Here we review recent advances in the genetic analysis of the signaling pathways that mediate NK cell killing.
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Affiliation(s)
- Ilaria Tassi
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO 63110, USA
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Abstract
TREM proteins are a family of cell surface receptors that participate in diverse cell processes, including inflammation, bone homeostasis, neurological development and coagulation. TREM-1, the first to be identified, acts to amplify inflammation. Other TREM proteins regulate the differentiation and function of macrophages, microglia, dendritic cells, osteoclasts and platelets. Here we discuss the state of the field, putative ligands of TREM proteins and the challenges that remain in understanding TREM biology.
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Affiliation(s)
- Julia Klesney-Tait
- Washington University School of Medicine, Department of Pathology and Immunology, Saint Louis, Missouri 63110, USA
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Lewis DA, Klesney-Tait J, Lumbley SR, Ward CK, Latimer JL, Ison CA, Hansen EJ. Identification of the znuA-encoded periplasmic zinc transport protein of Haemophilus ducreyi. Infect Immun 1999; 67:5060-8. [PMID: 10496878 PMCID: PMC96853 DOI: 10.1128/iai.67.10.5060-5068.1999] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.2] [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: 11/20/2022] Open
Abstract
The znuA gene of Haemophilus ducreyi encodes a 32-kDa (mature) protein that has homology to both the ZnuA protein of Escherichia coli and the Pzp1 protein of H. influenzae; both of these latter proteins are members of a growing family of prokaryotic zinc transporters. Inactivation of the H. ducreyi 35000 znuA gene by insertional mutagenesis resulted in a mutant that grew more slowly than the wild-type parent strain in vitro unless ZnCl(2) was provided at a final concentration of 100 microM. Other cations tested did not restore growth of this H. ducreyi mutant to wild-type levels. The H. ducreyi ZnuA protein was localized to the periplasm, where it is believed to function as the binding component of a zinc transport system. Complementation of the znuA mutation with the wild-type H. ducreyi znuA gene provided in trans restored the ability of this H. ducreyi mutant to grow normally in the absence of exogenously added ZnCl2. The wild-type H. ducreyi znuA gene was also able to complement a H. influenzae pzp1 mutation. The H. ducreyi znuA isogenic mutant exhibited significantly decreased virulence (P = 0.0001) when tested in the temperature-dependent rabbit model for experimental chancroid. This decreased virulence was not observed when the znuA mutant was complemented with the wild-type H. ducreyi znuA gene provided in trans.
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Affiliation(s)
- D A Lewis
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas 75235-9048, USA
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Hiltke TJ, Bauer ME, Klesney-Tait J, Hansen EJ, Munson RS, Spinola SM. Effect of normal and immune sera on Haemophilus ducreyi 35000HP and its isogenic MOMP and LOS mutants. Microb Pathog 1999; 26:93-102. [PMID: 10090856 DOI: 10.1006/mpat.1998.0250] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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: 11/22/2022]
Abstract
A bactericidal assay was developed in order to test the effect of hyperimmune rabbit sera on the viability of serum-resistant Haemophilus ducreyi 35000HP. Testing of several lots of rabbit complement and time course experiments showed that the serum-sensitive H. ducreyi CIPA77 was killed efficiently by 25% complement at 35 degrees C in 3 h. We hypothesized that incubation of 35000HP under these conditions with the appropriate bactericidal antibody would kill this strain. A panel of high titre rabbit antisera was developed and tested against 35000HP. The panel included antisera raised to whole cells, total membranes, Sarkosyl-insoluble outer membrane proteins, the H. ducreyi lipoprotein, and the peptidoglycan-associated lipoprotein. None of the antisera convincingly showed bactericidal activity. The bactericidal assay was also used to determine the effect of normal human serum (NHS) on isogenic mutants of 35000HP. 35000HP-RSM2, an Omegakan insertion mutant that expresses a truncated lipooligosaccharide, was as resistant to NHS as its parent. A mutant deficient in expression of the major outer membrane protein (35000. 60) was sensitive to NHS. We conclude that 35000HP is relatively resistant to normal and hyperimmune sera, and that the major outer membrane protein contributes to this resistance.
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Affiliation(s)
- T J Hiltke
- School of Medicine, Indiana University, Indianapolis, Indiana 46202, USA
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Cope LD, Lumbley S, Latimer JL, Klesney-Tait J, Stevens MK, Johnson LS, Purven M, Munson RS, Lagergard T, Radolf JD, Hansen EJ. A diffusible cytotoxin of Haemophilus ducreyi. Proc Natl Acad Sci U S A 1997; 94:4056-61. [PMID: 9108104 PMCID: PMC20567 DOI: 10.1073/pnas.94.8.4056] [Citation(s) in RCA: 184] [Impact Index Per Article: 6.8] [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: 10/13/1996] [Accepted: 01/13/1997] [Indexed: 02/04/2023] Open
Abstract
Little is known about the virulence mechanisms employed by Haemophilus ducreyi in the production of genital ulcers. This Gram-negative bacterium previously has been shown to produce a soluble cytotoxic activity that kills HeLa and HEp-2 cells. We have now identified a cluster of three H. ducreyi genes that encode this cytotoxic activity. The predicted proteins encoded by these genes are most similar to the products of the Escherichia coli cdtABC genes that comprise the cytolethal distending toxin (CDT) of this enteric pathogen. Eleven of 12 H. ducreyi strains were shown to possess this gene cluster and culture supernatants from these strains readily killed HeLa cells. The culture supernatant from a single strain of H. ducreyi that lacked these genes was unable to kill HeLa cells. When the H. ducreyi cdtABC gene cluster was cloned into E. coli, culture supernatant from the recombinant E. coli clone killed HeLa cells. A monoclonal antibody that neutralized this soluble cytotoxic activity of H. ducreyi was shown to bind to the H. ducreyi cdtC gene product. This soluble H. ducreyi cytotoxin may play a role in the development or persistence of the ulcerative lesions characteristic of chancroid.
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Affiliation(s)
- L D Cope
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235-9048, USA
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Klesney-Tait J, Hiltke TJ, Maciver I, Spinola SM, Radolf JD, Hansen EJ. The major outer membrane protein of Haemophilus ducreyi consists of two OmpA homologs. J Bacteriol 1997; 179:1764-73. [PMID: 9045839 PMCID: PMC178892 DOI: 10.1128/jb.179.5.1764-1773.1997] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [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: 02/03/2023] Open
Abstract
The major outer membrane protein (MOMP) of Haemophilus ducreyi is an OmpA homolog that migrates on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) gels as three species with apparent molecular weights ranging from 37,000 to 43,000. Monoclonal antibodies directed against this macromolecule were used to identify recombinant clones containing fragments of the gene encoding this protein. Nucleotide sequence analysis of these fragments confirmed that the MOMP encoded by the intact gene (momp) was a member of the OmpA family of outer membrane proteins. Construction of an isogenic H. ducreyi mutant unable to express the MOMP led to the discovery of a second outer membrane protein which migrated at the same rate on SDS-PAGE gels as the MOMP. N-terminal amino acid sequence analysis of this second protein revealed that its N terminus was nearly identical to that of the MOMP and also had homology with members of the OmpA family. Nucleotide sequence analysis of the region downstream from the momp gene revealed the presence of a partial open reading frame encoding a predicted OmpA-like protein. A modification of anchored PCR technology was used to obtain the nucleotide sequence of this downstream gene which was shown to encode a second OmpA homolog (OmpA2). The N-terminal amino acid sequence of OmpA2 was identical to that of the OmpA-like protein detected in the momp mutant. The H. ducreyi MOMP and OmpA2 proteins, which comigrated on SDS-PAGE gels and which were encoded by the tandem arranged momp and ompA2 genes, were 72% identical.
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Affiliation(s)
- J Klesney-Tait
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235, USA
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Stevens MK, Klesney-Tait J, Lumbley S, Walters KA, Joffe AM, Radolf JD, Hansen EJ. Identification of tandem genes involved in lipooligosaccharide expression by Haemophilus ducreyi. Infect Immun 1997; 65:651-60. [PMID: 9009327 PMCID: PMC176110 DOI: 10.1128/iai.65.2.651-660.1997] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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: 02/03/2023] Open
Abstract
A transposon insertion mutant of Haemophilus ducreyi 35000 possessing a truncated lipooligosaccharide (LOS) failed to bind the LOS-specific monoclonal antibody 3E6 (M. K. Stevens, L. D. Cope, J. D. Radolf, and E. J. Hansen, Infect. Immun. 63:2976-2982, 1995). This transposon was found to have inserted into the first of two tandem genes and also caused a deletion of chromosomal DNA upstream of this gene. These two genes, designated lbgA and lbgB, encoded predicted proteins with molecular masses of 25,788 and 40,236 Da which showed homology with proteins which function in lipopolysaccharide biosynthetic in other gram-negative bacteria. The tandem arrangement of the lbgA and lbgB genes was found to be conserved among H. ducreyi strains. Isogenic LOS mutants, constructed by the insertion of a cat cartridge into either the lbgA or the lbgB gene, expressed an LOS phenotype indistinguishable from that of the original transposon-derived LOS mutant. The wild-type LOS phenotype could be restored by complementation with the appropriate wild-type allele. These two LOS mutants proved to be as virulent as the wild-type parent strain in an animal model. A double mutant with a deletion of the lbgA and lbgB genes yielded equivocal results when its virulence was tested in an animal model.
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Affiliation(s)
- M K Stevens
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235-9048, USA
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Stevens MK, Porcella S, Klesney-Tait J, Lumbley S, Thomas SE, Norgard MV, Radolf JD, Hansen EJ. A hemoglobin-binding outer membrane protein is involved in virulence expression by Haemophilus ducreyi in an animal model. Infect Immun 1996; 64:1724-35. [PMID: 8613384 PMCID: PMC173985 DOI: 10.1128/iai.64.5.1724-1735.1996] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.6] [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: 01/31/2023] Open
Abstract
Haemophilus ducreyi exhibits a requirement for exogenously supplied heme for aerobic growth in vitro. Nine of ten wild-type isolates of H. ducreyi were shown to contain a readily detectable hemoglobin-binding activity. Spontaneous hemoglobin-binding-negative mutants of two of these wild-type isolates lost the ability to express an outer membrane protein with an apparent molecular mass of approximately 100 kDa. Similarly, the single wild-type isolate that lacked the ability to bind hemoglobin also appeared to lack expression of this same 100-kDa protein. A monoclonal antibody (5A9) to this 100-kDa protein was used to identify a recombinant clone which possessed an H. ducreyi chromosomal fragment containing the gene encoding the 100-kDa protein; this protein was designated hemoglobin utilization protein A (HupA). Nucleotide sequence analysis of the hupA gene revealed that the predicted protein, with a calculated molecular mass of 108 kDa, was similar to TonB-dependent outer membrane proteins of other bacteria. Increasing the concentration of heme in the growth medium resulted in decreased expression of the HupA protein. Mutant analysis was used to prove that the HupA protein was essential for the utilization by H. ducreyi of both hemoglobin and hemoglobin-haptoglobin as sources of heme in vitro. In addition, it was found that an isogenic hupA mutant was less virulent than the wild-type parent strain in the temperature-dependent rabbit model for dermal lesion production by H. ducreyi.
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Affiliation(s)
- M K Stevens
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235-9048, USA
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Alfa MJ, Stevens MK, DeGagne P, Klesney-Tait J, Radolf JD, Hansen EJ. Use of tissue culture and animal models to identify virulence-associated traits of Haemophilus ducreyi. Infect Immun 1995; 63:1754-61. [PMID: 7729882 PMCID: PMC173220 DOI: 10.1128/iai.63.5.1754-1761.1995] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [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: 01/26/2023] Open
Abstract
To identify virulence-associated properties of Haemophilus ducreyi, 34 strains of this sexually transmitted pathogen were evaluated for in vitro phenotypic characteristics of potential relevance to chancroid pathogenesis and for their ability to produce lesions in the temperature-dependent animal model for chancroid. Of the 34 strains tested, all but three produced a cytopathic effect on human foreskin fibroblasts (HFF) and all but six strains formed large microcolonies on HFF monolayers. A subset of 12 selected strains underwent more extensive analyses and, when evaluated for both their cytadherence kinetics and growth in the presence of HFF monolayers, it was found that several of these strains had a very limited ability to attach to HFF cells. When the same 12 strains were tested in the temperature-dependent rabbit model, only the seven strains which were positive in all of these in vitro-based tests readily produced lesions. In contrast, the five strains that were noted to be deficient in one or more of the phenotypic characteristics scored in the in vitro systems did not produce lesions. This association between the traits measured in vitro and the ability to produce dermal lesions was significant (P = 0.0012). These results suggest that in vitro behavior may be used to predict the virulence potential of H. ducreyi strains. Moreover, the phenotypic characteristics described in this study are appropriate focal points for efforts to determine the molecular basis of the virulence of this pathogen.
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Affiliation(s)
- M J Alfa
- Department of Medical Microbiology, University of Manitoba, Canada
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Helminen ME, Maciver I, Latimer JL, Klesney-Tait J, Cope LD, Paris M, McCracken GH, Hansen EJ. A large, antigenically conserved protein on the surface of Moraxella catarrhalis is a target for protective antibodies. J Infect Dis 1994; 170:867-72. [PMID: 7523537 DOI: 10.1093/infdis/170.4.867] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.7] [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: 01/25/2023] Open
Abstract
A monoclonal antibody (MAb) to Moraxella catarrhalis O35E bound to a surface-exposed epitope of a proteinaceous antigen of this organism. The antigen, designated UspA, was present in every strain of the pathogen tested in a colony blot RIA. UspA had a molecular mass on SDS-PAGE that varied between 300 and 400 kDa, depending on the individual M. catarrhalis strain. Passive immunization of mice with the UspA-reactive Mab enhanced pulmonary clearance of M. catarrhalis. Use of this Mab to screen a M. catarrhalis genomic DNA library permitted identification of a recombinant bacteriophage expressing the M. catarrhalis UspA protein. The recombinant UspA protein was used in Western blot analysis with sera from patients with M. catarrhalis pneumonia. Convalescent-phase sera but not acute-phase sera from these patients contained antibodies to this M. catarrhalis surface protein, indicating that M. catarrhalis strains growing in vivo express this molecule.
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Affiliation(s)
- M E Helminen
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas 75235-9048
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