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Lyudovyk O, Kim JY, Qualls D, Hwee MA, Lin YH, Boutemine SR, Elhanati Y, Solovyov A, Douglas M, Chen E, Babady NE, Ramanathan L, Vedantam P, Bandlamudi C, Gouma S, Wong P, Hensley SE, Greenbaum B, Huang AC, Vardhana SA. Impaired humoral immunity is associated with prolonged COVID-19 despite robust CD8 T cell responses. Cancer Cell 2022; 40:738-753.e5. [PMID: 35679859 PMCID: PMC9149241 DOI: 10.1016/j.ccell.2022.05.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/06/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022]
Abstract
How immune dysregulation affects recovery from COVID-19 infection in patients with cancer remains unclear. We analyzed cellular and humoral immune responses in 103 patients with prior COVID-19 infection, more than 20% of whom had delayed viral clearance. Delayed clearance was associated with loss of antibodies to nucleocapsid and spike proteins with a compensatory increase in functional T cell responses. High-dimensional analysis of peripheral blood samples demonstrated increased CD8+ effector T cell differentiation and a broad but poorly converged COVID-specific T cell receptor (TCR) repertoire in patients with prolonged disease. Conversely, patients with a CD4+ dominant immunophenotype had a lower incidence of prolonged disease and exhibited a deep and highly select COVID-associated TCR repertoire, consistent with effective viral clearance and development of T cell memory. These results highlight the importance of B cells and CD4+ T cells in promoting durable SARS-CoV-2 clearance and the significance of coordinated cellular and humoral immunity for long-term disease control.
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Affiliation(s)
- Olga Lyudovyk
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Justin Y Kim
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - David Qualls
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Madeline A Hwee
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ya-Hui Lin
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sawsan R Boutemine
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yuval Elhanati
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alexander Solovyov
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Melanie Douglas
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Eunise Chen
- University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| | - N Esther Babady
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Clinical Microbiology Service, Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lakshmi Ramanathan
- Clinical Chemistry Service, Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | | | - Sigrid Gouma
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Philip Wong
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Scott E Hensley
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Benjamin Greenbaum
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Physiology, Biophysics & Systems Biology, Weill Cornell Medicine, Weill Cornell Medical College, New York, NY, USA.
| | - Alexander C Huang
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA 19104, USA; Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
| | - Santosha A Vardhana
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
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2
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Bahadoran A, Bezavada L, Smallwood HS. Fueling influenza and the immune response: Implications for metabolic reprogramming during influenza infection and immunometabolism. Immunol Rev 2021; 295:140-166. [PMID: 32320072 DOI: 10.1111/imr.12851] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/11/2022]
Abstract
Recent studies support the notion that glycolysis and oxidative phosphorylation are rheostats in immune cells whose bioenergetics have functional outputs in terms of their biology. Specific intrinsic and extrinsic molecular factors function as molecular potentiometers to adjust and control glycolytic to respiratory power output. In many cases, these potentiometers are used by influenza viruses and immune cells to support pathogenesis and the host immune response, respectively. Influenza virus infects the respiratory tract, providing a specific environmental niche, while immune cells encounter variable nutrient concentrations as they migrate in response to infection. Immune cell subsets have distinct metabolic programs that adjust to meet energetic and biosynthetic requirements to support effector functions, differentiation, and longevity in their ever-changing microenvironments. This review details how influenza coopts the host cell for metabolic reprogramming and describes the overlap of these regulatory controls in immune cells whose function and fate are dictated by metabolism. These details are contextualized with emerging evidence of the consequences of influenza-induced changes in metabolic homeostasis on disease progression.
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Affiliation(s)
- Azadeh Bahadoran
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Lavanya Bezavada
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Heather S Smallwood
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, USA
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3
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Edmans M, McNee A, Porter E, Vatzia E, Paudyal B, Martini V, Gubbins S, Francis O, Harley R, Thomas A, Burt R, Morgan S, Fuller A, Sewell A, Charleston B, Bailey M, Tchilian E. Magnitude and Kinetics of T Cell and Antibody Responses During H1N1pdm09 Infection in Inbred Babraham Pigs and Outbred Pigs. Front Immunol 2021; 11:604913. [PMID: 33603740 PMCID: PMC7884753 DOI: 10.3389/fimmu.2020.604913] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/15/2020] [Indexed: 12/24/2022] Open
Abstract
We have used the pig, a large natural host animal for influenza with many physiological similarities to humans, to characterize αβ, γδ T cell and antibody (Ab) immune responses to the 2009 pandemic H1N1 virus infection. We evaluated the kinetic of virus infection and associated response in inbred Babraham pigs with identical MHC (Swine Leucocyte Antigen) and compared them to commercial outbred animals. High level of nasal virus shedding continued up to days 4 to 5 post infection followed by a steep decline and clearance of virus by day 9. Adaptive T cell and Ab responses were detectable from days 5 to 6 post infection reaching a peak at 9 to 14 days. γδ T cells produced cytokines ex vivo at day 2 post infection, while virus reactive IFNγ producing γδ T cells were detected from day 7 post infection. Analysis of NP tetramer specific and virus specific CD8 and CD4 T cells in blood, lung, lung draining lymph nodes, and broncho-alveolar lavage (BAL) showed clear differences in cytokine production between these tissues. BAL contained the most highly activated CD8, CD4, and γδ T cells producing large amounts of cytokines, which likely contribute to elimination of virus. The weak response in blood did not reflect the powerful local lung immune responses. The immune response in the Babraham pig following H1N1pdm09 influenza infection was comparable to that of outbred animals. The ability to utilize these two swine models together will provide unparalleled power to analyze immune responses to influenza.
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Affiliation(s)
- Matthew Edmans
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Adam McNee
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Emily Porter
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Eleni Vatzia
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Basu Paudyal
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Veronica Martini
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Simon Gubbins
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Ore Francis
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Ross Harley
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Amy Thomas
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Rachel Burt
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Sophie Morgan
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Anna Fuller
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Andrew Sewell
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Bryan Charleston
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
| | - Mick Bailey
- Bristol Veterinary School, University of Bristol, Langford, United Kingdom
| | - Elma Tchilian
- The Pirbright Institute, Enhanced Host Responses, Pirbright, United Kingdom
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Wen XS, Jiang D, Gao L, Zhou JZ, Xiao J, Cheng XC, He B, Chen Y, Lei P, Tan XW, Qin S, Zhang DY. Clinical characteristics and predictive value of lower CD4 +T cell level in patients with moderate and severe COVID-19: a multicenter retrospective study. BMC Infect Dis 2021; 21:57. [PMID: 33435865 PMCID: PMC7803000 DOI: 10.1186/s12879-020-05741-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/26/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND In December 2019, coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in Wuhan, Hubei, China. Moreover, it has become a global pandemic. This is of great value in describing the clinical symptoms of COVID-19 patients in detail and looking for markers which are significant to predict the prognosis of COVID-19 patients. METHODS In this multicenter, retrospective study, 476 patients with COVID-19 were enrolled from a consecutive series. After screening, a total of 395 patients were included in this study. All-cause death was the primary endpoint. All patients were followed up from admission till discharge or death. RESULTS The main symptoms observed in the study included fever on admission, cough, fatigue, and shortness of breath. The most common comorbidities were hypertension and diabetes mellitus. Patients with lower CD4+T cell level were older and more often male compared to those with higher CD4+T cell level. Reduced CD8+T cell level was an indicator of the severity of COVID-19. Both decreased CD4+T [HR:13.659; 95%CI: 3.235-57.671] and CD8+T [HR: 10.883; 95%CI: 3.277-36.145] cell levels were associated with in-hospital death in COVID-19 patients, but only the decrease of CD4+T cell level was an independent predictor of in-hospital death in COVID-19 patients. CONCLUSIONS Reductions in lymphocytes and lymphocyte subsets were common in COVID-19 patients, especially in severe cases of COVID-19. It was the CD8+T cell level, not the CD4+T cell level, that reflected the severity of the patient's disease. Only reduced CD4+T cell level was independently associated with increased in-hospital death in COVID-19 patients. TRIAL REGISTRATION Prognostic Factors of Patients With COVID-19, NCT04292964 . Registered 03 March 2020. Retrospectively registered.
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Affiliation(s)
- Xue-Song Wen
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Dan Jiang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Lei Gao
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Jian-Zhong Zhou
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Jun Xiao
- Department of Cardiovascular Medicine, Chongqing University Center Hospital, Chongqing, 400014, China
| | - Xiao-Cheng Cheng
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Bin He
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Yue Chen
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Peng Lei
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Xiao-Wei Tan
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Shu Qin
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China
| | - Dong-Ying Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Chongqing Medical University, No 1, Youyi Road, Chongqing, 400016, China.
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Topham DJ. Serendipity: Reflections on Being Mentored by Dr. Peter Doherty. Viral Immunol 2020; 33:137-142. [PMID: 32286185 PMCID: PMC7185342 DOI: 10.1089/vim.2019.0181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This is a semiautobiographical and scientific account of my time in the Doherty Laboratory from 1994 to 1999. It includes personal vignettes as well as discussion of how our work has impacted the fields of influenza, respiratory infections and immunity. I also point out the long-term impacts on my career.
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Affiliation(s)
- David J. Topham
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester Medical Center, Rochester, New York
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6
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Jang H, Elaish M, KC M, Abundo MC, Ghorbani A, Ngunjiri JM, Lee CW. Efficacy and synergy of live-attenuated and inactivated influenza vaccines in young chickens. PLoS One 2018; 13:e0195285. [PMID: 29624615 PMCID: PMC5889186 DOI: 10.1371/journal.pone.0195285] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/19/2018] [Indexed: 01/07/2023] Open
Abstract
Outbreaks of novel highly pathogenic avian influenza viruses have been reported in poultry species in the United States since 2014. These outbreaks have proven the limitations of biosecurity control programs, and new tools are needed to reinforce the current avian influenza control arsenal. Some enzootic countries have implemented inactivated influenza vaccine (IIV) in their control programs, but there are serious concerns that a long-term use of IIV without eradication may result in the selection of novel antigenically divergent strains. A broadly protective vaccine is needed, such as live-attenuated influenza vaccine (LAIV). We showed in our previous studies that pc4-LAIV (a variant that encodes a C-terminally truncated NS1 protein) can provide significant protection against heterologous challenge virus in chickens vaccinated at 2–4 weeks of age through upregulation of innate and adaptive immune responses. The current study was conducted to compare the performances of pc4-LAIV and IIV in young chickens vaccinated at 1 day of age. A single dose of pc4-LAIV was able to induce stronger innate and mucosal IgA responses and protect young immunologically immature chickens better than a single dose of IIV. Most importantly, when 1-day-old chickens were intranasally primed with pc4-LAIV and subcutaneously boosted with IIV three weeks later, they showed a rapid, robust, and highly cross-reactive serum antibody response and a high level of mucosal IgA antibody response. This vaccination regimen warrants further optimization to increase its range of protection.
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MESH Headings
- Animals
- Animals, Newborn
- Antibodies, Viral/biosynthesis
- Antibodies, Viral/blood
- Antibodies, Viral/genetics
- Antigens, Viral/genetics
- Chickens/immunology
- Cross Reactions
- Immunity, Innate/genetics
- Immunity, Mucosal/genetics
- Immunization, Secondary/methods
- Immunization, Secondary/veterinary
- Influenza A virus/genetics
- Influenza A virus/immunology
- Influenza Vaccines/administration & dosage
- Influenza Vaccines/genetics
- Influenza Vaccines/immunology
- Influenza in Birds/immunology
- Influenza in Birds/prevention & control
- Poultry Diseases/immunology
- Poultry Diseases/prevention & control
- Vaccination/methods
- Vaccination/veterinary
- Vaccines, Attenuated/administration & dosage
- Vaccines, Attenuated/genetics
- Vaccines, Attenuated/immunology
- Vaccines, Inactivated/administration & dosage
- Vaccines, Inactivated/genetics
- Vaccines, Inactivated/immunology
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Affiliation(s)
- Hyesun Jang
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Mohamed Elaish
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
| | - Mahesh KC
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Michael C. Abundo
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Amir Ghorbani
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - John M. Ngunjiri
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- * E-mail: (JMN); (CWL)
| | - Chang-Won Lee
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, Ohio, United States of America
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail: (JMN); (CWL)
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7
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The impact of aging on CD4 + T cell responses to influenza infection. Biogerontology 2018; 19:437-446. [PMID: 29616390 PMCID: PMC6170716 DOI: 10.1007/s10522-018-9754-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 03/23/2018] [Indexed: 12/29/2022]
Abstract
CD4+ T cells are important for generating high quality and robust immune responses to influenza infection. Immunosenescence that occurs with aging, however, compromises the ability of CD4+ T cells to differentiate into functional subsets resulting in a multitude of dysregulated responses namely, delayed viral clearance and prolonged inflammation leading to increased pathology. Current research employing animal models and human subjects has provided new insights into the description and mechanisms of age-related CD4+ T cell changes. In this review, we will discuss the consequences of aging on CD4+ T cell differentiation and function and how this influences the initial CD4+ T cell effector responses to influenza infection. Understanding these age-related alterations will aid in the pharmacological development of therapeutic treatments and improved vaccination strategies for the vulnerable elderly population.
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8
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Koday MT, Leonard JA, Munson P, Forero A, Koday M, Bratt DL, Fuller JT, Murnane R, Qin S, Reinhart TA, Duus K, Messaoudi I, Hartman AL, Stefano-Cole K, Morrison J, Katze MG, Fuller DH. Multigenic DNA vaccine induces protective cross-reactive T cell responses against heterologous influenza virus in nonhuman primates. PLoS One 2017; 12:e0189780. [PMID: 29267331 PMCID: PMC5739435 DOI: 10.1371/journal.pone.0189780] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 12/01/2017] [Indexed: 01/19/2023] Open
Abstract
Recent avian and swine-origin influenza virus outbreaks illustrate the ongoing threat of influenza pandemics. We investigated immunogenicity and protective efficacy of a multi-antigen (MA) universal influenza DNA vaccine consisting of HA, M2, and NP antigens in cynomolgus macaques. Following challenge with a heterologous pandemic H1N1 strain, vaccinated animals exhibited significantly lower viral loads and more rapid viral clearance when compared to unvaccinated controls. The MA DNA vaccine induced robust serum and mucosal antibody responses but these high antibody titers were not broadly neutralizing. In contrast, the vaccine induced broadly-reactive NP specific T cell responses that cross-reacted with the challenge virus and inversely correlated with lower viral loads and inflammation. These results demonstrate that a MA DNA vaccine that induces strong cross-reactive T cell responses can, independent of neutralizing antibody, mediate significant cross-protection in a nonhuman primate model and further supports development as an effective approach to induce broad protection against circulating and emerging influenza strains.
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Affiliation(s)
- Merika T. Koday
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Jolie A. Leonard
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Paul Munson
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Adriana Forero
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Michael Koday
- Washington National Primate Research Center, University of Washington, Seattle, WA, United States of America
| | - Debra L. Bratt
- Washington National Primate Research Center, University of Washington, Seattle, WA, United States of America
| | - James T. Fuller
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Robert Murnane
- Washington National Primate Research Center, University of Washington, Seattle, WA, United States of America
| | - Shulin Qin
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Todd A. Reinhart
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Karen Duus
- Center for Immunology and Microbial Disease, Albany Medical College, Albany, NY, United States of America
- Basic Sciences Department, College of Osteopathic Medicine, Touro University Nevada, Henderson, NV, United States of America
| | - Ilhem Messaoudi
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Beaverton, OR, United States of America
| | - Amy L. Hartman
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Kelly Stefano-Cole
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Juliet Morrison
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
| | - Michael G. Katze
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
- Washington National Primate Research Center, University of Washington, Seattle, WA, United States of America
| | - Deborah Heydenburg Fuller
- Department of Microbiology, University of Washington, Seattle, WA, United States of America
- Washington National Primate Research Center, University of Washington, Seattle, WA, United States of America
- * E-mail:
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9
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Influenza and Memory T Cells: How to Awake the Force. Vaccines (Basel) 2016; 4:vaccines4040033. [PMID: 27754364 PMCID: PMC5192353 DOI: 10.3390/vaccines4040033] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 09/27/2016] [Indexed: 12/24/2022] Open
Abstract
Annual influenza vaccination is an effective way to prevent human influenza. Current vaccines are mainly focused on eliciting a strain-matched humoral immune response, requiring yearly updates, and do not provide protection for all vaccinated individuals. The past few years, the importance of cellular immunity, and especially memory T cells, in long-lived protection against influenza virus has become clear. To overcome the shortcomings of current influenza vaccines, eliciting both humoral and cellular immunity is imperative. Today, several new vaccines such as infection-permissive and recombinant T cell inducing vaccines, are being developed and show promising results. These vaccines will allow us to stay several steps ahead of the constantly evolving influenza virus.
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10
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Qiu X, Wu S, Hilchey SP, Thakar J, Liu ZP, Welle SL, Henn AD, Wu H, Zand MS. Diversity in Compartmental Dynamics of Gene Regulatory Networks: The Immune Response in Primary Influenza A Infection in Mice. PLoS One 2015; 10:e0138110. [PMID: 26413862 PMCID: PMC4586376 DOI: 10.1371/journal.pone.0138110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 08/26/2015] [Indexed: 01/23/2023] Open
Abstract
Current approaches to study transcriptional profiles post influenza infection typically rely on tissue sampling from one or two sites at a few time points, such as spleen and lung in murine models. In this study, we infected female C57/BL6 mice intranasally with mouse-adapted H3N2/Hong Kong/X31 avian influenza A virus, and then analyzed the gene expression profiles in four different compartments (blood, lung, mediastinal lymph nodes, and spleen) over 11 consecutive days post infection. These data were analyzed by an advanced statistical procedure based on ordinary differential equation (ODE) modeling. Vastly different lists of significant genes were identified by the same statistical procedure in each compartment. Only 11 of them are significant in all four compartments. We classified significant genes in each compartment into co-expressed modules based on temporal expression patterns. We then performed functional enrichment analysis on these co-expression modules and identified significant pathway and functional motifs. Finally, we used an ODE based model to reconstruct gene regulatory network (GRN) for each compartment and studied their network properties.
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Affiliation(s)
- Xing Qiu
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
| | - Shuang Wu
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
| | - Shannon P. Hilchey
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
| | - Juilee Thakar
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, 14642 United States of America
| | - Zhi-Ping Liu
- Department of Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
- Department of Biomedical Engineering, Shandong University, Jinan, Shandong, China
| | - Stephen L. Welle
- Functional Genomics Center, University of Rochester, Rochester, NY, 14642, United States of America
| | - Alicia D. Henn
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
- Department of Microbiology and Immunology, University of Rochester, Rochester, NY, 14642 United States of America
| | - Hulin Wu
- Department of Biostatistics, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, 77030, United States of America
- * E-mail: (HW); (MSZ)
| | - Martin S. Zand
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, 14642, United States of America
- * E-mail: (HW); (MSZ)
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11
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IL-10 inhibits neuraminidase-activated TGF-β and facilitates Th1 phenotype during early phase of infection. Nat Commun 2015; 6:6374. [DOI: 10.1038/ncomms7374] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 01/23/2015] [Indexed: 12/12/2022] Open
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12
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Li J, Arévalo MT, Chen Y, Chen S, Zeng M. T-cell-mediated cross-strain protective immunity elicited by prime-boost vaccination with a live attenuated influenza vaccine. Int J Infect Dis 2014; 27:37-43. [PMID: 25172265 DOI: 10.1016/j.ijid.2014.05.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 04/24/2014] [Accepted: 05/19/2014] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Antigenic drift and shift of influenza viruses require frequent reformulation of influenza vaccines. In addition, seasonal influenza vaccines are often mismatched to the epidemic influenza strains. This stresses the need for a universal influenza vaccine. METHODS BALB/c mice were vaccinated with the trivalent live attenuated (LAIV; FluMist) or inactivated (TIV; FluZone) influenza vaccines and challenged with PR8 (H1N1), FM/47 (H1N1), or HK/68 (H3N2) influenza virus. Cytokines and antibody responses were tested by ELISA. Furthermore, different LAIV dosages were applied in BALB/c mice. LAIV vaccinated mice were also depleted of T-cells and challenged with PR8 virus. RESULTS LAIV induced significant protection against challenge with the non-vaccine strain PR8 influenza virus. Furthermore, protective immunity against PR8 was dose-dependent. Of note, interleukin 2 and interferon gamma cytokine secretion in the lung alveolar fluid were significantly elevated in mice vaccinated with LAIV. Moreover, T-cell depletion of LAIV vaccinated mice compromised protection, indicating that T-cell-mediated immunity is required. In contrast, passive transfer of sera from mice vaccinated with LAIV into naïve mice failed to protect against PR8 challenge. Neutralization assays in vitro confirmed that LAIV did not induce cross-strain neutralizing antibodies against PR8 virus. Finally, we showed that three doses of LAIV also provided protection against challenge with two additional heterologous viruses, FM/47 and HK/68. CONCLUSIONS These results support the potential use of the LAIV as a universal influenza vaccine under a prime-boost vaccination regimen.
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Affiliation(s)
- Junwei Li
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA
| | - Maria T Arévalo
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA
| | - Yanping Chen
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA
| | - Shan Chen
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA
| | - Mingtao Zeng
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, 5001 El Paso Drive, El Paso, TX 79905, USA.
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13
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Quiñones-Parra S, Loh L, Brown LE, Kedzierska K, Valkenburg SA. Universal immunity to influenza must outwit immune evasion. Front Microbiol 2014; 5:285. [PMID: 24971078 PMCID: PMC4054793 DOI: 10.3389/fmicb.2014.00285] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 05/23/2014] [Indexed: 12/23/2022] Open
Abstract
Although an influenza vaccine has been available for 70 years, influenza virus still causes seasonal epidemics and worldwide pandemics. Currently available vaccines elicit strain-specific antibody (Ab) responses to the surface haemagglutinin (HA) and neuraminidase (NA) proteins, but these can be ineffective against serologically-distinct viral variants and novel subtypes. Thus, there is a great need for cross-protective or "universal" influenza vaccines to overcome the necessity for annual immunization against seasonal influenza and to provide immunity to reduce the severity of infection with pandemic or outbreak viruses. It is well established that natural influenza infection can provide cross-reactive immunity that can reduce the impact of infection with distinct influenza type A strains and subtypes, including H1N1, H3N2, H2N2, H5N1, and H7N9. The key to generating universal influenza immunity through vaccination is to target functionally-conserved regions of the virus, which include epitopes on the internal proteins for cross-reactive T cell immunity or on the HA stem for broadly reactive Ab responses. In the wake of the 2009 H1N1 pandemic, broadly neutralizing antibodies (bnAbs) have been characterized and isolated from convalescent and vaccinated individuals, inspiring development of new vaccination techniques to elicit such responses. Induction of influenza-specific T cell responses through vaccination has also been recently examined in clinical trials. Strong evidence is available from human and animal models of influenza to show that established influenza-specific T cell memory can reduce viral shedding and symptom severity. However, the published evidence also shows that CD8(+) T cells can efficiently select immune escape mutants early after influenza virus infection. Here, we discuss universal immunity to influenza viruses mediated by both cross-reactive T cells and Abs, the mechanisms of immune evasion in influenza, and propose how to counteract commonly occurring immune-escape variants.
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Affiliation(s)
- Sergio Quiñones-Parra
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville VIC, Australia
| | - Liyen Loh
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville VIC, Australia
| | - Lorena E Brown
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville VIC, Australia
| | - Katherine Kedzierska
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville VIC, Australia
| | - Sophie A Valkenburg
- Centre for Influenza Research and School of Public Health, The University of Hong Kong Hong Kong, China
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14
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Valkenburg SA, Quiñones-Parra S, Gras S, Komadina N, McVernon J, Wang Z, Halim H, Iannello P, Cole C, Laurie K, Kelso A, Rossjohn J, Doherty PC, Turner SJ, Kedzierska K. Acute emergence and reversion of influenza A virus quasispecies within CD8+ T cell antigenic peptides. Nat Commun 2014; 4:2663. [PMID: 24173108 DOI: 10.1038/ncomms3663] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 09/23/2013] [Indexed: 01/14/2023] Open
Abstract
Influenza A virus-specific CD8(+) cytotoxic T lymphocytes (CTLs) provide a degree of cross-strain protection that is potentially subverted by mutation. Here we describe the sequential emergence of such variants within CTL epitopes for a persistently infected, immunocompromised infant. Further analysis in immunodeficient and wild-type mice supports the view that CTL escape variants arise frequently in influenza, accumulate with time and revert in the absence of immune pressure under MHCI-mismatched conditions. Viral fitness, the abundance of endogenous CD8(+) T cell responses and T cell receptor repertoire diversity influence the nature of these de novo mutants. Structural characterization of dominant escape variants shows how the peptide-MHCI interaction is modified to affect variant-MHCI stability. The mechanism of influenza virus escape thus looks comparable to that recognized for chronic RNA viruses like HIV and HCV, suggesting that immunocompromised patients with prolonged viral infection could have an important part in the emergence of influenza quasispecies.
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Affiliation(s)
- Sophie A Valkenburg
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3010, Australia
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15
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Goulding J, Abboud G, Tahiliani V, Desai P, Hutchinson TE, Salek-Ardakani S. CD8 T cells use IFN-γ to protect against the lethal effects of a respiratory poxvirus infection. THE JOURNAL OF IMMUNOLOGY 2014; 192:5415-25. [PMID: 24748494 DOI: 10.4049/jimmunol.1400256] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CD8 T cells are a key component of immunity to many viral infections. They achieve this through using an array of effector mechanisms, but precisely which component/s are required for protection against a respiratory orthopox virus infection remains unclear. Using a model of respiratory vaccinia virus infection in mice, we could specifically determine the relative contribution of perforin, TRAIL, and IFN-γ-mediated pathways in protection against virus induced morbidity and mortality. Unexpectedly, we observed that protection against death was mediated by IFN-γ without any involvement of the perforin or TRAIL-dependent pathways. IFN-γ mRNA and protein levels in the lung peaked between days 3 and 6 postinfection. This enhanced response coincided with the emergence of virus-specific CD8 T cells in the lung and the cessation of weight loss. Transfer experiments indicated that CD8 T cell-autonomous expression of IFN-γ restricts virus-induced lung pathology and dissemination to visceral tissues and is necessary for clearance of virus. Most significantly, we show that CD8 T cell-derived IFN-γ is sufficient to protect mice in the absence of CD4 and B-lymphocytes. Thus, our findings reveal a previously unappreciated mechanism by which effector CD8 T cells afford protection against a highly virulent respiratory orthopox virus infection.
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Affiliation(s)
- John Goulding
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
| | - Georges Abboud
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
| | - Vikas Tahiliani
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
| | - Pritesh Desai
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
| | - Tarun E Hutchinson
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
| | - Shahram Salek-Ardakani
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610
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16
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Topham DJ, Chapman TJ, Richter M. Lymphoid and extralymphoid CD4 T cells that orchestrate the antiviral immune response. Expert Rev Clin Immunol 2014; 2:267-76. [DOI: 10.1586/1744666x.2.2.267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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17
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Abstract
Influenza virus infection induces a potent initial innate immune response, which serves to limit the extent of viral replication and virus spread. However, efficient (and eventual) viral clearance within the respiratory tract requires the subsequent activation, rapid proliferation, recruitment, and expression of effector activities by the adaptive immune system, consisting of antibody producing B cells and influenza-specific T lymphocytes with diverse functions. The ensuing effector activities of these T lymphocytes ultimately determine (along with antibodies) the capacity of the host to eliminate the viruses and the extent of tissue damage. In this review, we describe this effector T cell response to influenza virus infection. Based on information largely obtained in experimental settings (i.e., murine models), we will illustrate the factors regulating the induction of adaptive immune T cell responses to influenza, the effector activities displayed by these activated T cells, the mechanisms underlying the expression of these effector mechanisms, and the control of the activation/differentiation of these T cells, in situ, in the infected lungs.
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18
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Sage LK, Fox JM, Tompkins SM, Tripp RA. Subsisting H1N1 influenza memory responses are insufficient to protect from pandemic H1N1 influenza challenge in C57BL/6 mice. J Gen Virol 2013; 94:1701-1711. [PMID: 23580424 DOI: 10.1099/vir.0.049494-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The 2009 swine-origin pandemic H1N1 (pH1N1) influenza virus transmitted and caused disease in many individuals immune to pre-2009 H1N1 influenza virus. Whilst extensive studies on antibody-mediated pH1N1 cross-reactivity have been described, few studies have focused on influenza-specific memory T-cells. To address this, the immune response in pre-2009 H1N1 influenza-immune mice was evaluated after pH1N1 challenge and disease pathogenesis was determined. The results show that despite homology shared between pre-2009 H1N1 and pH1N1 strains, the effector memory T-cell response to pre-2009 H1N1 was generally ineffective, a finding that correlated with lung virus persistence. Additionally, pH1N1 challenge generated T-cells reactive to new pH1N1 epitopes. These studies highlight the importance of vaccinating against immunodominant T-cell epitopes to provide for a more effective strategy to control influenza virus through heterosubtypic immunity.
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Affiliation(s)
- Leo K Sage
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, USA
| | - Julie M Fox
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, USA
| | - Stephen M Tompkins
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, USA
| | - Ralph A Tripp
- University of Georgia, College of Veterinary Medicine, Department of Infectious Diseases, Athens, GA, USA
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19
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Dutta A, Miaw SC, Yu JS, Chen TC, Lin CY, Lin YC, Chang CS, He YC, Chuang SH, Yen MI, Huang CT. Altered T-bet dominance in IFN-γ-decoupled CD4+ T cells with attenuated cytokine storm and preserved memory in influenza. THE JOURNAL OF IMMUNOLOGY 2013; 190:4205-14. [PMID: 23509355 DOI: 10.4049/jimmunol.1202434] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cytokine storm has been postulated as one of the major causes of mortality in patients with severe respiratory viral infections such as influenza. With the help of an influenza Ag- specific mouse experimental system, we report that CD4(+) T cells contribute effector cytokines leading to lung inflammation in acute influenza. Although virus can no longer be detected from tissues 14 d postinfection, virus-derived Ag continues to drive a CD4(+) T cell response after viral clearance. Ag-specific CD4(+) T cells proliferate and evolve into memory CD4(+) T cells efficiently, but the production of effector cytokines is seriously hampered during this phase. This decoupling of proliferation and effector cytokine production doesn't appear in conjunction with increased suppression by regulatory T cells or decreased induction of transcription factors. Rather, GATA-3 and ROR-γt levels are elevated when compared with cells that have effector cytokine production. T-bet dominance over GATA-3 and ROR-γt decreases with the disarmament of effector cytokine production. Importantly, upon reinfection, these decoupled cells produce elevated levels of IFN-γ and were effective in virus eradication. These results provide a mechanism through altered T-bet dominance to dampen the cytokine storm without impeding the generation of memory T cells in influenza virus infection.
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Affiliation(s)
- Avijit Dutta
- Division of Infectious Diseases, Department of Medicine, Chang Gung University and Chang Gung Memorial Hospital, Kweishan, Taoyuan 33333, Taiwan
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20
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Kedzierska K, Valkenburg SA, Doherty PC, Davenport MP, Venturi V. Use it or lose it: establishment and persistence of T cell memory. Front Immunol 2012; 3:357. [PMID: 23230439 PMCID: PMC3515894 DOI: 10.3389/fimmu.2012.00357] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 11/08/2012] [Indexed: 01/06/2023] Open
Abstract
Pre-existing T cell memory provides substantial protection against viral, bacterial, and parasitic infections. The generation of protective T cell memory constitutes a primary goal for cell-mediated vaccines, thus understanding the mechanistic basis of memory development and maintenance are of major importance. The widely accepted idea that T cell memory pools are directly descended from the effector populations has been challenged by recent reports that provide evidence for the early establishment of T cell memory and suggest that the putative memory precursor T cells do not undergo full expansion to effector status. Moreover, it appears that once the memory T cells are established early in life, they can persist for the lifetime of an individual. This is in contrast to the reported waning of naïve T cell immunity with age. Thus, in the elderly, immune memory that was induced at an early age may be more robust than recently induced memory, despite the necessity for long persistence. The present review discusses the mechanisms underlying the early establishment of immunological memory and the subsequent persistence of memory T cell pools in animal models and humans.
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Affiliation(s)
- Katherine Kedzierska
- Department of Microbiology and Immunology, University of Melbourne Melbourne, VIC, Australia
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21
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Multifunctional CD4 cells expressing gamma interferon and perforin mediate protection against lethal influenza virus infection. J Virol 2012; 86:6792-803. [PMID: 22491469 DOI: 10.1128/jvi.07172-11] [Citation(s) in RCA: 191] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
CD4 effectors generated in vitro can promote survival against a highly pathogenic influenza virus via an antibody-independent mechanism involving class II-restricted, perforin-mediated cytotoxicity. However, it is not known whether CD4 cells activated during influenza virus infection can acquire cytolytic activity that contributes to protection against lethal challenge. CD4 cells isolated from the lungs of infected mice were able to confer protection against a lethal dose of H1N1 influenza virus A/Puerto Rico 8/34 (PR8). Infection of BALB/c mice with PR8 induced a multifunctional CD4 population with proliferative capacity and ability to secrete interleukin-2 (IL-2) and tumor necrosis factor alpha (TNF-α) in the draining lymph node (DLN) and gamma interferon (IFN-γ) and IL-10 in the lung. IFN-γ-deficient CD4 cells produced larger amounts of IL-17 and similar levels of TNF-α, IL-10, and IL-2 compared to wild-type (WT) CD4 cells. Both WT and IFN-γ(-/-) CD4 cells exhibit influenza virus-specific cytotoxicity; however, IFN-γ-deficient CD4 cells did not promote recovery after lethal infection as effectively as WT CD4 cells. PR8 infection induced a population of cytolytic CD4 effectors that resided in the lung but not the DLN. These cells expressed granzyme B (GrB) and required perforin to lyse peptide-pulsed targets. Lethally infected mice given influenza virus-specific CD4 cells deficient in perforin showed greater weight loss and a slower time to recovery than mice given WT influenza virus-specific CD4 cells. Taken together, these data strengthen the concept that CD4 T cell effectors are broadly multifunctional with direct roles in promoting protection against lethal influenza virus infection.
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22
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Abstract
The mechanisms responsible for heterosubtypic immunity to influenza virus are not well understood but might hold the key for new vaccine strategies capable of providing lasting protection against both seasonal and pandemic strains. Memory CD4 T cells are capable of providing substantial protection against influenza both through direct effector mechanisms and indirectly through regulatory and helper functions. Here, we discuss the broad impact of memory CD4 T cells on heterosubtypic immunity against influenza and the prospects of translating findings from animal models into improved human influenza vaccines.
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Affiliation(s)
- K K McKinstry
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655, USA.
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23
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Abstract
Antigenic changes in influenza virus occur gradually, owing to mutations (antigenic drift), and abruptly, owing to reassortment among subtypes (antigenic shift). Availability of strain-matched vaccines often lags behind these changes, resulting in a shortfall in public health. In animal models, cross-protection by vaccines based on conserved antigens does not completely prevent infection, but greatly reduces morbidity, mortality, virus replication and, thus, viral shedding and spread. Such immunity is especially effective and long-lasting with mucosal administration. Cross-protective immunity in humans is controversial, but is suggested by some epidemiological findings. 'Universal' vaccines protective against all influenza A viruses might substantially reduce severity of infection and limit spread of disease during outbreaks. These vaccines could be used 'off the shelf' early in an outbreak or pandemic, before strain-matched vaccines are available.
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Affiliation(s)
- Suzanne L Epstein
- Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Rockville, MD 20852, USA.
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24
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Seasonal influenza infection and live vaccine prime for a response to the 2009 pandemic H1N1 vaccine. Proc Natl Acad Sci U S A 2011; 108:1140-5. [PMID: 21199945 DOI: 10.1073/pnas.1009908108] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The robust immune response to a single dose of pandemic 2009 H1N1 vaccine suggests that a large segment of the population has been previously primed. We evaluated the effect of seasonal (s) H1N1 infection, s-trivalent inactivated vaccine (s-TIV), and trivalent s-live attenuated influenza vaccine (s-LAIV) before immunization with a pandemic live attenuated influenza vaccine (p-LAIV) in mice. We compared serum and mucosal antibody and pulmonary CD8 and CD4 responses and the virologic response to challenge with a wild-type 2009 pandemic H1N1 (p-H1N1) virus. Two doses of p-LAIV induced cellular immune and robust ELISA and neutralizing antibody responses that were associated with complete protection from p-H1N1 challenge. A single dose of p-LAIV induced a cellular response and ELISA but not a neutralizing antibody response, and incomplete protection from p-H1N1 virus challenge. Primary infection with s-H1N1 influenza virus followed by a dose of p-LAIV resulted in cross-reactive ELISA antibodies and a robust cellular immune response that was also associated with complete protection from p-H1N1 virus challenge. A lower-magnitude but similar response associated with partial protection was seen in mice that received a dose of s-LAIV followed by p-LAIV. Mice that received a dose of s-TIV followed by p-LAIV did not show any evidence of priming. In summary, prior infection with a seasonal influenza virus or s-LAIV primed mice for a robust response to a single dose of p-LAIV that was associated with protection equivalent to two doses of the matched pandemic vaccine.
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25
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Hufford MM, Kim TS, Sun J, Braciale TJ. Antiviral CD8+ T cell effector activities in situ are regulated by target cell type. ACTA ACUST UNITED AC 2010; 208:167-80. [PMID: 21187318 PMCID: PMC3023137 DOI: 10.1084/jem.20101850] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In the lungs of mice infected with influenza, the activity of cytotoxic T lymphocytes is modulated by the type of target cell encountered. Cytotoxic T lymphocytes (CTLs) play a prominent role in the resolution of viral infections through their capacity both to mediate contact-dependent lysis of infected cells and to release soluble proinflammatory cytokines and chemokines. The factors controlling these antiviral effector activities in vivo at infection sites are ill defined. Using a mouse model of influenza infection, we observed that the expression of CTL effector activity in the infected lungs is dictated by the target cell type encountered. CD45+ lung infiltrating inflammatory mononuclear cells, particularly CD11chi dendritic cells, trigger both CTL cytotoxicity and release of inflammatory mediators, whereas CD45− influenza-infected respiratory epithelial cells stimulate only CTL cytotoxicity. CTL proinflammatory mediator release is modulated by co-stimulatory ligands (CD80 and CD86) expressed by the CD45+ inflammatory cells. These findings suggest novel mechanisms of control of CTL effector activity and have potentially important implications for the control of excess pulmonary inflammation and immunopathology while preserving optimal viral clearance during respiratory virus infections.
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Affiliation(s)
- Matthew M Hufford
- Beirne B. Carter Center for Immunology Research, Department of Microbiology, University of Virginia, Charlottesville, VA 22904, USA
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26
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T cell-mediated protection against lethal 2009 pandemic H1N1 influenza virus infection in a mouse model. J Virol 2010; 85:448-55. [PMID: 20980523 DOI: 10.1128/jvi.01812-10] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Genetic mutation and reassortment of influenza virus gene segments, in particular those of hemagglutinin (HA) and neuraminidase (NA), that lead to antigenic drift and shift are the major strategies for influenza virus to escape preexisting immunity. The most recent example of such phenomena is the first pandemic of H1N1 influenza of the 21st century, which started in 2009. Cross-reactive antibodies raised against H1N1 viruses circulating before 1930 show protective activity against the 2009 pandemic virus. Cross-reactive T-cell responses can also contribute to protection, but in vivo support of this view is lacking. To explore the protection mechanisms in vivo, we primed mice with H1 and H3 influenza virus isolates and rechallenged them with a virus derived from the 2009 H1N1 A/CA/04/09 virus, named CA/E3/09. We found that priming with influenza viruses of both H1 and H3 homo- and heterosubtypes protected against lethal CA/E3/09 virus challenge. Convalescent-phase sera from these primed mice conferred no neutralization activity in vitro and no protection in vivo. However, T-cell depletion studies suggested that both CD4 and CD8 T cells contributed to the protection. Taken together, these results indicate that cross-reactive T cells established after initial priming with distally related viruses can be a vital component for prevention of disease and control of pandemic H1N1 influenza virus infection. Our results highlight the importance of establishing cross-reactive T-cell responses for protecting against existing or newly emerging pandemic influenza viruses.
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27
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Miao H, Hollenbaugh JA, Zand MS, Holden-Wiltse J, Mosmann TR, Perelson AS, Wu H, Topham DJ. Quantifying the early immune response and adaptive immune response kinetics in mice infected with influenza A virus. J Virol 2010; 84:6687-98. [PMID: 20410284 PMCID: PMC2903284 DOI: 10.1128/jvi.00266-10] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Accepted: 04/08/2010] [Indexed: 01/12/2023] Open
Abstract
Seasonal and pandemic influenza A virus (IAV) continues to be a public health threat. However, we lack a detailed and quantitative understanding of the immune response kinetics to IAV infection and which biological parameters most strongly influence infection outcomes. To address these issues, we use modeling approaches combined with experimental data to quantitatively investigate the innate and adaptive immune responses to primary IAV infection. Mathematical models were developed to describe the dynamic interactions between target (epithelial) cells, influenza virus, cytotoxic T lymphocytes (CTLs), and virus-specific IgG and IgM. IAV and immune kinetic parameters were estimated by fitting models to a large data set obtained from primary H3N2 IAV infection of 340 mice. Prior to a detectable virus-specific immune response (before day 5), the estimated half-life of infected epithelial cells is approximately 1.2 days, and the half-life of free infectious IAV is approximately 4 h. During the adaptive immune response (after day 5), the average half-life of infected epithelial cells is approximately 0.5 days, and the average half-life of free infectious virus is approximately 1.8 min. During the adaptive phase, model fitting confirms that CD8(+) CTLs are crucial for limiting infected cells, while virus-specific IgM regulates free IAV levels. This may imply that CD4 T cells and class-switched IgG antibodies are more relevant for generating IAV-specific memory and preventing future infection via a more rapid secondary immune response. Also, simulation studies were performed to understand the relative contributions of biological parameters to IAV clearance. This study provides a basis to better understand and predict influenza virus immunity.
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Affiliation(s)
- Hongyu Miao
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Joseph A. Hollenbaugh
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Martin S. Zand
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Jeanne Holden-Wiltse
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Tim R. Mosmann
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Alan S. Perelson
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - Hulin Wu
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| | - David J. Topham
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York 14642, David H. Smith Center for Vaccine Biology & Immunology, Department of Microbiology and Immunology, University of Rochester, Rochester, New York 14642, Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York 14642, Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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28
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Vaccination focusing immunity on conserved antigens protects mice and ferrets against virulent H1N1 and H5N1 influenza A viruses. Vaccine 2009; 27:6512-21. [DOI: 10.1016/j.vaccine.2009.08.053] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Revised: 08/07/2009] [Accepted: 08/17/2009] [Indexed: 12/14/2022]
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Roti M, Yang J, Berger D, Huston L, James EA, Kwok WW. Healthy human subjects have CD4+ T cells directed against H5N1 influenza virus. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2008; 180:1758-68. [PMID: 18209073 PMCID: PMC3373268 DOI: 10.4049/jimmunol.180.3.1758] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
It is commonly perceived that the human immune system is naive to the newly emerged H5N1 virus. In contrast, most adults have been exposed to influenza A H1N1 and H3N2 viruses through vaccination or infection. Adults born before 1968 have likely been exposed to H2N2 viruses. We hypothesized that CD4(+) T cells generated in response to H1N1, H3N2, and H2N2 influenza A viruses also recognize H5N1 epitopes. Tetramer-guided epitope mapping and Ag-specific class II tetramers were used to identify H5N1-specific T cell epitopes and detect H5N1-specific T cell responses. Fifteen of 15 healthy subjects tested had robust CD4(+) T cell responses against matrix protein, nucleoprotein, and neuraminidase of the influenza A/Viet Nam/1203/2004 (H5N1) virus. These results are not surprising, because the matrix protein and nucleoprotein of influenza A viruses are conserved while the neuraminidase of the H5N1 virus is of the same subtype as that of the circulating H1N1 influenza strain. However, H5N1 hemagglutinin-reactive CD4(+) T cells were also detected in 14 of 14 subjects examined despite the fact that hemagglutinin is less conserved. Most were cross-reactive to H1, H2, or H3 hemagglutinin epitopes. H5N1-reactive T cells were also detected ex vivo, exhibited a memory phenotype, and were capable of secreting IFN-gamma, TNF-alpha, IL-5, and IL-13. These data demonstrate the presence of H5N1 cross-reactive T cells in healthy Caucasian subjects, implying that exposure to influenza A H1N1, H3N2, or H2N2 viruses through either vaccination or infection may provide partial immunity to the H5N1 virus.
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Affiliation(s)
- Michelle Roti
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
| | - Junbao Yang
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
| | - DeAnna Berger
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
| | - Laurie Huston
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
| | - Eddie A James
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
| | - William W Kwok
- Benaroya Research Institute at Virginia Mason, 1201 Ninth Ave, Seattle, Washington, 98101, USA
- Department of Immunology, University of Washington, Seattle Washington, 98195, USA
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30
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Mbawuike IN, Zhang Y, Couch RB. Control of mucosal virus infection by influenza nucleoprotein-specific CD8+ cytotoxic T lymphocytes. Respir Res 2007; 8:44. [PMID: 17597533 PMCID: PMC1914056 DOI: 10.1186/1465-9921-8-44] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Accepted: 06/27/2007] [Indexed: 11/21/2022] Open
Abstract
Background MHC class I-restricted CD8+ cytotoxic T lymphocytes (CTL) are thought to play a major role in clearing virus and promoting recovery from influenza infection and disease. This has been demonstrated for clearance of influenza virus from the lungs of infected mice. However, human influenza infection is primarily a respiratory mucosal infection involving the nasopharynx and tracheobronchial tree. The role of CD8+ CTL directed toward the influenza nucleoprotein (NP) in defense against influenza virus infection at the respiratory mucosa was evaluated in two separate adoptive transfer experiments. Methods Influenza nucleoprotein (NP)-specific CD8+ CTL were generated from splenocytes obtained from Balb/c mice previously primed with influenza A/Taiwan/1/86 (H1N1) infection or with influenza A/PR/8/34 (H1N1)-derived NP plasmid DNA vaccine followed by infection with A/Hong Kong/68 (H3N2) virus. After in vitro expansion by exposure to an influenza NP-vaccinia recombinant, highly purified CD8+ T cells exhibited significant lysis in vitro of P815 target cells infected with A/Hong Kong/68 (H3N2) virus while the CD8- fraction (CD4+ T cells, B cells and macrophages) had no CTL activity. Purified CD8+ and CD8- T cells (1 × 107) were injected intravenously or interperitoneally into naive mice four hours prior to intranasal challenge with A/HK/68 (H3N2) virus. Results The adoptively transferred NP-vaccinia-induced CD8+ T cells caused significant reduction of virus titers in both the lungs and nasal passages when compared to CD8- cells. Neither CD8+ nor CD8- T cells from cultures stimulated with HIV gp120-vaccinia recombinant reduced virus titers. Conclusion The present data demonstrate that influenza NP-specific CD8+ CTL can play a direct role in clearance of influenza virus from the upper respiratory mucosal surfaces.
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Affiliation(s)
- Innocent N Mbawuike
- Viral Respiratory Pathogens Research Unit, Departments of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas, 77030, USA
| | - Yongxin Zhang
- Viral Respiratory Pathogens Research Unit, Departments of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas, 77030, USA
| | - Robert B Couch
- Viral Respiratory Pathogens Research Unit, Departments of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas, 77030, USA
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31
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Eichelberger MC, Bauchiero S, Point D, Richter BWM, Prince GA, Schuman R. Distinct cellular immune responses following primary and secondary influenza virus challenge in cotton rats. Cell Immunol 2007; 243:67-74. [PMID: 17306242 DOI: 10.1016/j.cellimm.2006.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2006] [Revised: 12/19/2006] [Accepted: 12/19/2006] [Indexed: 11/28/2022]
Abstract
To evaluate cell-mediated immunity in influenza-infected cotton rats, we compared the cellular composition of spleen, mediastinal lymph nodes (MLN) and bronchoalveolar lavage (BAL) after primary and secondary infection. There was an increase in cellularity in the MLN after primary infection that was further expanded upon rechallenge. CD4(+) T cells expanded after primary infection, but there was preferential increase in the number of CD4-negative T cells following secondary challenge. After primary infection, a large proportion of the monocytes and NK cells were present in the BAL while a T cell population dominated after secondary infection. CD4(+) T cells were predominant in this population unless the animals had been challenged with heterosubtypic influenza A virus. These studies are the first to show evidence of a memory T cell response to influenza infection in cotton rats and show quantitative and qualitative differences between the recall response to homosubtypic and heterosubtypic viruses.
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32
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La Gruta NL, Kedzierska K, Stambas J, Doherty PC. A question of self-preservation: immunopathology in influenza virus infection. Immunol Cell Biol 2007; 85:85-92. [PMID: 17213831 DOI: 10.1038/sj.icb.7100026] [Citation(s) in RCA: 358] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Influenza A viruses that circulate normally in the human population cause a debilitating, though generally transient, illness that is sometimes fatal, particularly in the elderly. Severe complications arising from pandemic influenza or the highly pathogenic avian H5N1 viruses are often associated with rapid, massive inflammatory cell infiltration, acute respiratory distress, reactive hemophagocytosis and multiple organ involvement. Histological and pathological indicators strongly suggest a key role for an excessive host response in mediating at least some of this pathology. Here, we review the current literature on how various effector arms of the immune system can act deleteriously to initiate or exacerbate pathological damage in this viral pneumonia. Generally, the same immunological factors mediating tissue damage during the anti-influenza immune response are also critical for efficient elimination of virus, thereby posing a significant challenge in the design of harmless yet effective therapeutic strategies for tackling influenza virus.
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Affiliation(s)
- Nicole L La Gruta
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia.
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33
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Brown DM, Dilzer AM, Meents DL, Swain SL. CD4 T cell-mediated protection from lethal influenza: perforin and antibody-mediated mechanisms give a one-two punch. THE JOURNAL OF IMMUNOLOGY 2006; 177:2888-98. [PMID: 16920924 DOI: 10.4049/jimmunol.177.5.2888] [Citation(s) in RCA: 224] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The mechanisms whereby CD4 T cells contribute to the protective response against lethal influenza infection remain poorly characterized. To define the role of CD4 cells in protection against a highly pathogenic strain of influenza, virus-specific TCR transgenic CD4 effectors were generated in vitro and transferred into mice given lethal influenza infection. Primed CD4 effectors conferred protection against lethal infection over a broad range of viral dose. The protection mediated by CD4 effectors did not require IFN-gamma or host T cells, but did result in increased anti-influenza Ab titers compared with untreated controls. Further studies indicated that CD4-mediated protection at high doses of influenza required B cells, and that passive transfer of anti-influenza immune serum was therapeutic in B cell-deficient mice, but only when CD4 effectors were present. Primed CD4 cells also acquired perforin (Pfn)-mediated cytolytic activity during effector generation, suggesting a second mechanism used by CD4 cells to confer protection. Pfn-deficient CD4 effectors were less able to promote survival in intact BALB/c mice and were unable to provide protection in B cell-deficient mice, indicating that Ab-independent protection by CD4 effectors requires Pfn. Therefore, CD4 effectors mediate protection to lethal influenza through at least two mechanisms: Pfn-mediated cytotoxicity early in the response promoted survival independently of Ab production, whereas CD4-driven B cell responses resulted in high titer Abs that neutralized remaining virus.
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Affiliation(s)
- Deborah M Brown
- Trudeau Institute, Saranac Lake, NY 12983, USA. dbrown@trudeauinstitute
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34
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Kedzierska K, La Gruta NL, Turner SJ, Doherty PC. Establishment and recall of CD8
+
T‐cell memory in a model of localized transient infection. Immunol Rev 2006; 211:133-45. [PMID: 16824123 DOI: 10.1111/j.0105-2896.2006.00386.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The influenza A virus model of localized, transient respiratory infection provides a well-defined experimental system for dissecting the induction and maintenance of CD8+ T-cell memory. This review focuses on quantitative and qualitative aspects of the prominent D(b)NP366- and D(b)PA224-specific CD8+ T-cell responses in virus-infected B6 mice. The different virus-specific effector and memory sets are compared by phenotypic [CD62L, interleukin-7 receptor-alpha (IL-7Ralpha), and IL-15Rbeta expression] and functional [interferon-gamma (IFN-gamma), tumor necrosis factor-alpha (TNF-alpha), and IL-2 production] analyses. Most clonotypes [defined by T-cell receptor (TCR) CDR3beta sequence] generated during the acute phase of infection survive into memory, with those expressing the more consensus 'canonical' TCRs being the major contributors to the recall response. The extent of clonal expansion and the size of memory CD8+ T-cell populations has been characterized for mice challenged with either wildtype or mutant viruses, where broadly equivalent D(b)NP366 and D(b)PA224 expression was achieved by disabling the peptides in their native configuration, then expressing them in the viral neuraminidase protein. Combining the clonotypic and antigen dose analyses led to a somewhat mechanistic conclusion that the magnitude of any virus-specific CD8+ T-cell response will be a direct function of antigen dose and the size of the naïve or memory CD8+ T-cell precursor pool.
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Affiliation(s)
- Katherine Kedzierska
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Melbourne, Australia
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35
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Whitton JL, Slifka MK, Liu F, Nussbaum AK, Whitmire JK. The regulation and maturation of antiviral immune responses. Adv Virus Res 2005; 63:181-238. [PMID: 15530562 PMCID: PMC7125551 DOI: 10.1016/s0065-3527(04)63003-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- J Lindsay Whitton
- Department of Neuropharmacology, CVN-9, The Scripps Research Institute, La Jolla, CA 92037, USA
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36
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Webby RJ, Andreansky S, Stambas J, Rehg JE, Webster RG, Doherty PC, Turner SJ. Protection and compensation in the influenza virus-specific CD8+ T cell response. Proc Natl Acad Sci U S A 2003; 100:7235-40. [PMID: 12775762 PMCID: PMC165859 DOI: 10.1073/pnas.1232449100] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Influenza virus-specific CD8+ T cells generally recognize peptides derived from conserved, internal proteins that are not subject to antibody-mediated selection pressure. Prior exposure to any one influenza A virus (H1N1) can prime for a secondary CD8+ T cell response to a serologically different influenza A virus (H3N2). The protection afforded by this recall of established CD8+ T cell memory, although limited, is not negligible. Key characteristics of primary and secondary influenza-specific host responses are probed here with recombinant viruses expressing modified nucleoprotein (NP) and acid polymerase (PA) genes. Point mutations were introduced into the epitopes derived from the NP and PA such that they no longer bound the presenting H2Db MHC class I glycoprotein, and reassortant H1N1 and H3N2 viruses were made by reverse genetics. Conventional (C57BL/6J, H2b, and Ig+/+) and Ig-/- (muMT) mice were more susceptible to challenge with the single NP [HKx31 influenza A virus (HK)-NP] and PA (HK-PA) mutants, but unlike the Ig-/- mice, Ig+/+ mice were surprisingly resistant to the HK-NP/-PA double mutant. This virus was found to promote an enhanced IgG response resulting, perhaps, from the delayed elimination of antigen-presenting cells. Antigen persistence also could explain the increase in size of the minor KbPB1703 CD8+ T cell population in mice infected with the mutant viruses. The extent of such compensation was always partial, giving the impression that any virus-specific CD8+ T cell response operates within constrained limits. It seems that the relationship between protective humoral and cellular immunity is neither simple nor readily predicted.
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Affiliation(s)
- Richard J Webby
- Department of Infectious Diseases, St. Jude Children's Research Hospital, 332 North Lauderdale, Memphis, TN 38105, USA
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37
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Belz GT, Wodarz D, Diaz G, Nowak MA, Doherty PC. Compromised influenza virus-specific CD8(+)-T-cell memory in CD4(+)-T-cell-deficient mice. J Virol 2002; 76:12388-93. [PMID: 12414983 PMCID: PMC136883 DOI: 10.1128/jvi.76.23.12388-12393.2002] [Citation(s) in RCA: 231] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The primary influenza A virus-specific CD8(+)-T-cell responses measured by tetramer staining of spleen, lymph node, and bronchoalveolar lavage (BAL) lymphocyte populations were similar in magnitude for conventional I-A(b+/+) and CD4(+)-T-cell-deficient I-A(b-/-) mice. Comparable levels of virus-specific cytotoxic-T-lymphocyte activity were detected in the inflammatory exudate recovered by BAL following challenge. However, both the size of the memory T-cell pool and the magnitude of the recall response in the lymphoid tissues (but not the BAL specimens) were significantly diminished in mice lacking the CD4(+) subset. Also, the rate of virus elimination from the infected respiratory tract slowed at low virus loads following challenge of naïve and previously immunized I-A(b-/-) mice. Thus, though the capacity to mediate the CD8(+)-T-cell effector function is broadly preserved in the absence of concurrent CD4(+)-T-cell help, both the maintenance and recall of memory are compromised and the clearance of residual virus is delayed. These findings are consistent with mathematical models that predict virus-host dynamics in this, and other, models of infection.
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Affiliation(s)
- Gabrielle T Belz
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
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38
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Ben-Yedidia T, Beignon AS, Partidos CD, Muller S, Arnon R. A retro-inverso peptide analogue of influenza virus hemagglutinin B-cell epitope 91-108 induces a strong mucosal and systemic immune response and confers protection in mice after intranasal immunization. Mol Immunol 2002; 39:323-31. [PMID: 12220890 DOI: 10.1016/s0161-5890(02)00095-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In this study, a novel approach for the development of a peptide-based vaccine has been tested. We investigated the possibility of replacing an all-L amino acid peptide sequence corresponding to the protective B-cell epitope hemagglutinin (HA) 91-108 from influenza HA with a retro-inverso analogue encompassing this sequence. Retro-inverso peptides are composed of D-amino acids assembled in a reverse order from that of the parent L-sequence, thus maintaining the overall topology of the native sequence. This explains the observed antigenic cross-reactivity with anti-influenza virus antibodies. Mice immunized intranasally with the ovalbumin-conjugated retro-inverso analogue and cholera toxin as an adjuvant, produced strong systemic (serum IgG) and mucosal (lung IgA) antibody responses, and were protected against intranasal challenge with a lethal dose of influenza virus. The weight loss pattern in the protected group indicated that the vaccinated animals developed a disease of low severity resulting in a quick recovery. Furthermore, splenocytes of the immunized mice cultured in the presence of inactivated influenza virus, secreted high levels of IFN-gamma. The half-life of the retro-inverso analogue in the presence of lung homogenate proteases was at least 700 times greater than that of the parent L-peptide. These results demonstrate that peptidomimetic analogues with high resistance to proteolytic degradation are very effective immunogens when administered via the intranasal route, inducing protective immunity against a viral infection. This approach might be advantageous for vaccine development.
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Affiliation(s)
- Tamar Ben-Yedidia
- Department of Immunology, The Weizmann Institute of Science, P.O. Box 26, 76100, Rehovot, Israel
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39
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Doherty PC, Christensen JP, Belz GT, Stevenson PG, Sangster MY. Dissecting the host response to a gamma-herpesvirus. Philos Trans R Soc Lond B Biol Sci 2001; 356:581-93. [PMID: 11313013 PMCID: PMC1088446 DOI: 10.1098/rstb.2000.0786] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The murine gamma-herpesvirus 68 (MHV-68) provides a unique experimental model for dissecting immunity to large DNA viruses that persist in B lymphocytes. The analysis is greatly facilitated by the availability of genetically disrupted (-/-) mice that lack key host-response elements, and by the fact that MHV-68 is a lytic virus that can readily be manipulated for mutational analysis. The mutant virus strategy is being used, for example, to characterize the part played in vivo by an MHV-68-encoded chemokine-binding protein that may ultimately find an application in human therapeutics. Experiments with various -/- mice and monoclonal antibody depletion protocols have shown very clearly that type I interferons (IFNs) are essential for the early control of MHV-68 replication, while CD4+ T cells producing IFN-gamma function to limit the consequences of viral persistence. Virus-specific CD8+ effectors acting in the absence of the CD4+ subset seem initially to control the lytic phase in the lung following respiratory challenge, but are then unable to prevent the reactivation of replicative infection in epithelia and the eventual death of CD4+ T-cell-deficient mice. This could reflect the fact that the interaction between the CD8+ T cells and the virus-infected targets is partially compromised by the MHV-68 K3 protein, which inhibits antigen presentation by MHC class I glycoproteins. Immunization strategies focusing on the CD8+ T-cell response to epitopes expressed during the lytic phase of MHV-68 infection can limit virus replication, but are unable to prevent the establishment of latency. Other experiments with mutant viruses also suggest that there is a disconnection between lytic MHV-68 infection and latency. The massive nonspecific immunoglobulin response and the dramatic expansion of Vbeta4+ CD8+ T cells, which is apparently MHC independent, could represent some sort of 'smoke screen' used by MHV-68 to subvert immunity. Although MHV-68 is neither Epstein-Barr virus nor human herpesvirus-8, the results generated from this system suggest possibilities that may usefully be addressed with these human pathogens. Perhaps the main lesson learned to date is that all the components of immunity are likely to be important for the control of these complex viruses.
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Affiliation(s)
- P C Doherty
- Department of Immunology, St Jude Children's Research Hospital, Memphis, TN 38105, USA.
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40
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Affiliation(s)
- J E Crowe
- Department of Pediatrics, Vanderbilt University Medical School, Nashville, TN 37232-2581, USA
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41
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Tripp RA, Hou S, Etchart N, Prinz A, Moore D, Winter J, Anderson LJ. CD4(+) T cell frequencies and Th1/Th2 cytokine patterns expressed in the acute and memory response to respiratory syncytial virus I-E(d)-restricted peptides. Cell Immunol 2001; 207:59-71. [PMID: 11161454 DOI: 10.1006/cimm.2000.1752] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The respiratory syncytial virus (RSV)-specific frequencies and cytokine expression patterns of acute and memory CD4(+) T cells from RSV strain-A- and strain-B-infected BALB/c mice were determined following restimulation with a panel of 14 predicted RSV I-E(d) peptides from NSP-2, M, SH, F, and L proteins. Ten of fourteen peptides stimulated intracellular Th1 and/or Th2 cytokines in CD4(+) T cells from the mediastinal lymph nodes (MLN) and spleens of RSV strain-A- or strain-B-immune BALB/c mice. Spleen cells exhibited a predominant Th2 cytokine expression pattern after peptide stimulation, whereas MLN cells exhibited a mixed Th1/Th2 cytokine pattern. For a few peptides, there were differences in the Th1/Th2 cytokine response to peptides from the homologous versus heterologous RSV group. None of the 10 peptides induced both Th1 and Th2 cytokines in cells from similarly immunized mice. The frequency and breadth of cytokine expression by I-E(d)-restricted CD4(+) T cells to peptide stimulation was diminished in the memory response.
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Affiliation(s)
- R A Tripp
- Division of Viral and Rickettsial Diseases, National Center of Infectious Diseases, Atlanta, Georgia 30333, USA.
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42
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Affiliation(s)
- M K Slifka
- Department of Neuropharmacology, The Scripps Research Institute, La Jolla, California 92037, USA
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43
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Bot A, Holz A, Christen U, Wolfe T, Temann A, Flavell R, von Herrath M. Local IL-4 expression in the lung reduces pulmonary influenza-virus-specific secondary cytotoxic T cell responses. Virology 2000; 269:66-77. [PMID: 10725199 DOI: 10.1006/viro.2000.0187] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We studied the effect of lung-specific IL-4 expression on the T cell response during primary and secondary heterologous infection with influenza virus by using transgenic mice that express IL-4 under a lung-specific promoter. Subsequent to primary infection with a type A/H1N1 influenza virus these transgenic mice exhibited similar local recruitment of CD4(+) and CD8(+) T cells and only slightly decreased virus-specific CTL activity. However, during secondary challenge with a heterologous influenza virus, the local infiltration with virus-specific, MHC class I-restricted CD8(+) T cells was significantly decreased compared to that of nontransgenic littermates. The ability of IL-4 transgenic mice to clear the heterologous infection was delayed but not abrogated. This was associated with a faster virus-neutralizing antibody response in IL-4 transgenic mice and with their ability to mount significant Th1 responses even in the presence of increased local IL-4 expression. Our observations demonstrate a negative regulatory effect of IL-4 on memory Tc1/CD8(+) T cells, but are also consistent with complementary mechanisms important for virus clearance such as virus-neutralizing antibodies. The reduction of memory CTL in the presence of IL-4 might have consequences for understanding the course of influenza infection in situations where T(H)2 immunity is increased.
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MESH Headings
- Animals
- Antibodies, Viral/blood
- Antibodies, Viral/immunology
- Cytokines/analysis
- Cytokines/genetics
- Cytokines/immunology
- Immunization, Secondary
- Immunologic Memory/immunology
- Influenza A virus/immunology
- Influenza A virus/physiology
- Interleukin-4/deficiency
- Interleukin-4/genetics
- Interleukin-4/immunology
- Interleukin-4/metabolism
- Ki-1 Antigen/analysis
- Lung/immunology
- Lung/metabolism
- Lung/pathology
- Lung/virology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Neutralization Tests
- Organ Specificity
- Orthomyxoviridae Infections/immunology
- Orthomyxoviridae Infections/pathology
- Orthomyxoviridae Infections/virology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Spleen/immunology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Helper-Inducer/immunology
- Viral Load
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Affiliation(s)
- A Bot
- Department of Neuropharmacology, Division of Virology, IMM6, The Scripps Research Institute, La Jolla, CA 92037, USA
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44
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Abstract
Viral respiratory infections produce wheezing illnesses in patients of all ages. In infancy, infections with respiratory syncytial virus and parainfluenza virus are the major cause of bronchiolitis and croup, whereas infections with common cold viruses such as rhinoviruses are the principal triggers for wheezing in older children and adults with asthma. In addition to causing increased wheezing in asthma, there is mounting evidence that infections early in childhood can affect the development of the immune system and thereby modify the risk for the subsequent development of allergies and asthma. Both of these effects appear to be mediated by virus-induced immune responses. Early during the course of viral infection, resident cells in the airway are activated in an antigen-independent fashion, triggering antiviral responses but also activating and recruiting cells to the airway that could contribute to airway obstruction and respiratory symptoms. Virus-specific T- and B-cell responses may also have dual effects in the presence of preexisting airway inflammation. Finally, there is evidence of synergistic interactions between allergen- and virus-induced airway inflammation. It is likely that greater definition of mechanisms of virus-induced inflammation will provide therapeutic targets for the treatment and possibly the prevention of allergies and asthma.
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Affiliation(s)
- J E Gern
- University of Wisconsin Medical School, Madison, Wisconsin, USA
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45
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Gerlach JT, Diepolder HM, Jung MC, Gruener NH, Schraut WW, Zachoval R, Hoffmann R, Schirren CA, Santantonio T, Pape GR. Recurrence of hepatitis C virus after loss of virus-specific CD4(+) T-cell response in acute hepatitis C. Gastroenterology 1999; 117:933-41. [PMID: 10500077 DOI: 10.1016/s0016-5085(99)70353-7] [Citation(s) in RCA: 518] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS The prospective comparison of patients with acute hepatitis C virus (HCV) who spontaneously clear the virus with those who cannot achieve viral elimination and progress to chronic hepatitis offers the unique opportunity to analyze natural mechanisms of viral elimination. METHODS We studied the HCV-specific CD4(+) T-cell response in 38 patients with acute HCV and correlated the clinical course with the antiviral immune response. The individual HCV-specific T-cell response was assessed in a proliferation assay ((3)H-thymidine uptake) and an enzyme-linked immunospot assay. RESULTS Patients were classified according to their clinical course and pattern of CD4(+) T-cell responses in 3 categories: first, patients mounting a strong and sustained antiviral CD4(+)/Th1(+) T-cell response who cleared the virus (HCV RNA-negative; n = 20); second, patients who were unable to mount an HCV-specific CD4(+) T-cell response and developed chronic disease (n = 12); and third, patients who initially displayed a strong CD4(+) T-cell response and eliminated the virus (HCV PCR-negative) but subsequently lost this specific T-cell response (n = 6). The loss of the HCV-specific CD4(+) T-cell response was promptly followed by HCV recurrence. CONCLUSIONS The results indicate that a virus-specific CD4(+)/Th1(+) T-cell response that eliminates the virus during the acute phase of disease has to be maintained permanently to achieve long-term control of the virus. The induction and/or maintenance of virus-specific CD4(+) T cells could represent a promising therapeutic approach in HCV infection.
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Affiliation(s)
- J T Gerlach
- Institute for Immunology, Klinikum Grosshadern, University of Munich, Germany
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46
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Reconstitution of Early Lymphoid Proliferation and Immune Function in Jak3-Deficient Mice by Interleukin-3. Blood 1999. [DOI: 10.1182/blood.v94.6.1906] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Expansion of early lymphoid progenitors requires interleukin-7 (IL-7), which functions through γc-mediated receptor activation of Jak3. Jak3 deficiency is a cause of severe combined immunodeficiency (SCID) in humans and mice. IL-3 activates many of the same signaling pathways as IL-7, such as Stat5, but achieves this effect through the activation of Jak2 rather than Jak3. We hypothesized that expansion of an IL-7–responsive precursor population through a Jak3-independent pathway using IL-3 may stimulate early lymphoid progenitors and restore lymphopoiesis in Jak3−/− mice. Newborn Jak3−/− mice that were injected with IL-3 demonstrated thymic enlargement, a 2- to 20-fold increase in thymocyte numbers, and up to a 10-fold expansion in the number of CD4+, CD8+, and B220+/IgM+ splenic lymphocytes, consistent with an effect upon an early lymphoid progenitor population. In contrast to control mice, IL-3–treated Jak3−/− mice challenged with the allogeneic major histocompatibility complex (MHC) class I-bearing tumor P815 developed a specific CD8-dependent cytotoxic T lymphocyte (CTL) response. IL-3–treated mice also mounted influenza-specific CTL responses and survival was prolonged. The beneficial effects of IL-3 are proposed to be produced by stimulation of a lymphoid precursor population of IL-7R+/IL-3R+ cells that we identified in wild-type bone marrow. In vitro, we show that an early IL-7R+ lymphoid progenitor population expresses IL-3R and proliferates in response to IL-3 and that IL-3 activates Stat5 comparably to IL-7. Clinically, IL-3 may therefore be useful treatment for X-linked and Jak3-deficient SCID patients who lack bone marrow donors.
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47
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Abstract
Expansion of early lymphoid progenitors requires interleukin-7 (IL-7), which functions through γc-mediated receptor activation of Jak3. Jak3 deficiency is a cause of severe combined immunodeficiency (SCID) in humans and mice. IL-3 activates many of the same signaling pathways as IL-7, such as Stat5, but achieves this effect through the activation of Jak2 rather than Jak3. We hypothesized that expansion of an IL-7–responsive precursor population through a Jak3-independent pathway using IL-3 may stimulate early lymphoid progenitors and restore lymphopoiesis in Jak3−/− mice. Newborn Jak3−/− mice that were injected with IL-3 demonstrated thymic enlargement, a 2- to 20-fold increase in thymocyte numbers, and up to a 10-fold expansion in the number of CD4+, CD8+, and B220+/IgM+ splenic lymphocytes, consistent with an effect upon an early lymphoid progenitor population. In contrast to control mice, IL-3–treated Jak3−/− mice challenged with the allogeneic major histocompatibility complex (MHC) class I-bearing tumor P815 developed a specific CD8-dependent cytotoxic T lymphocyte (CTL) response. IL-3–treated mice also mounted influenza-specific CTL responses and survival was prolonged. The beneficial effects of IL-3 are proposed to be produced by stimulation of a lymphoid precursor population of IL-7R+/IL-3R+ cells that we identified in wild-type bone marrow. In vitro, we show that an early IL-7R+ lymphoid progenitor population expresses IL-3R and proliferates in response to IL-3 and that IL-3 activates Stat5 comparably to IL-7. Clinically, IL-3 may therefore be useful treatment for X-linked and Jak3-deficient SCID patients who lack bone marrow donors.
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48
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Ben-Yedidia T, Marcus H, Reisner Y, Arnon R. Intranasal administration of peptide vaccine protects human/mouse radiation chimera from influenza infection. Int Immunol 1999; 11:1043-51. [PMID: 10383936 DOI: 10.1093/intimm/11.7.1043] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Influenza virus is characterized by frequent and unpredictable changes of the surface glycoproteins which enable the virus to escape the immune system. Approved vaccines which consist of the whole virus or the surface glycoproteins fail to induce broad specificity protection. We have previously reported that a peptide-based experimental recombinant vaccine which includes conserved epitopes of B and T lymphocytes was efficient in mice, leading to cross-strain, long-term protection. In the present study, this approach was adapted for the design of a human vaccine, based on epitopes recognized by the prevalent HLAs. These epitopes were expressed in Salmonella flagellin and tested for their efficacy in human/mouse radiation chimera in which human peripheral blood mononuclear cells (PBMC) are functionally engrafted. The vaccinated mice demonstrated clearance of the virus after challenge and resistance to lethal infection. The production of virus-specific human antibodies was also higher in this group. Control groups of either non-vaccinated, or vaccinated mice which had not been engrafted with the human PBMC, did not exhibit the protective immune response. FACS analysis showed that most human cells in the transplanted mice are CD8(+) and CD4(+). Hence, it may be concluded: (i) that the protection involves cellular mechanisms, but is most probably accomplished without direct lysis of influenza-infected pulmonary cells by cytotoxic T lymphocytes, but rather via a cytokine-mediated mechanism, (ii) that the human/mouse radiation chimera model may be of some value in the investigation of new vaccines, as an additional tool prior to clinical trials, and (iii) that the synthetic recombinant vaccine can induce a response in the human immune system and confers protection against influenza infection. Further investigation is needed to establish the efficacy of such a peptide vaccine in human subjects.
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Affiliation(s)
- T Ben-Yedidia
- Department of Immunology, The Weizmann Institute of Science, Rehovot 76100, Israel
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49
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Christensen JP, Cardin RD, Branum KC, Doherty PC. CD4(+) T cell-mediated control of a gamma-herpesvirus in B cell-deficient mice is mediated by IFN-gamma. Proc Natl Acad Sci U S A 1999; 96:5135-40. [PMID: 10220431 PMCID: PMC21829 DOI: 10.1073/pnas.96.9.5135] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/1999] [Indexed: 11/18/2022] Open
Abstract
The lack of B cells and antibody does not prevent mice from dealing effectively with a pathogenic gamma-herpesvirus. Both CD4(+) and CD8(+) T cells contribute to the control of virus replication in the respiratory tract, with the depletion of either lymphocyte subset leading to increased titers in the lung. However, the further neutralization of IFN-gamma diminishes the effectiveness of the CD4(+) T cell response and causes substantially increased mortality. Experiments with bone marrow radiation chimeras indicate that the immune CD4(+) effectors operate optimally when there is the potential for direct interaction with virus-infected targets expressing MHC class II glycoproteins, suggesting that the IFN-gamma produced by these lymphocytes is functioning at short range. The numbers of latently infected cells in the spleens of carrier mice are also significantly increased by the concurrent depletion of both the CD4(+) population and IFN-gamma. These experiments raise the possibility that the defective control of intercurrent gamma-herpesvirus infections in patients with AIDS not only is due solely to the absence of helper T cells but also reflects the loss of an important set of CD4(+) effectors.
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Affiliation(s)
- J P Christensen
- St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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50
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Topham DJ, Doherty PC. Longitudinal Analysis of the Acute Sendai Virus-Specific CD4+ T Cell Response and Memory. THE JOURNAL OF IMMUNOLOGY 1998. [DOI: 10.4049/jimmunol.161.9.4530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
The development and persistence of Sendai virus-specific CD4+ T cell memory has been analyzed following respiratory infection of C57BL/6J mice by determining the prevalence of IL-2-producing Th cell precursors (Thp). Frequencies as high as 1:40 virus-specific CD4+ T cells were found in the regional lymph nodes and spleen during the acute phase of the host response and persisted at levels ≥1:500 for 2 to 3 mo. Thereafter, these CD4+ T cells tended to distribute more to the spleen than to the lymph nodes, a pattern that persisted for the life of the animals. From 3 to 12 mo after infection, virus-specific Thp were always detectable, although the numbers were diminished relative to those measured during the acute phase. Thereafter, however, in both contemporary and cumulative assays, there was a progressive increase in both the frequency and number of Thp. These increases were especially apparent for mice more than 2 years of age. This may reflect enrichment of the CD4+CD44high memory set due to the gradual diminution of the naive CD4+CD62LhighCD44low component. Analysis of DNA staining profiles for the CD4+ T cells showed high levels of cycling for the acute phase of the response, whereas the rate of T cell turnover measured for the CD4+CD44high population by bromodeoxyuridine incorporation indicated a pattern of stable, continuing proliferation throughout life. Virus-specific CD4+ T cell memory resulting from a single exposure to a readily eliminated RNA virus is thus maintained indefinitely in laboratory mice.
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Affiliation(s)
- David J. Topham
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105
| | - Peter C. Doherty
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105
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