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Abstract
Individuals suffering from severe viral respiratory tract infections have recently emerged as "at risk" groups for developing invasive fungal infections. Influenza virus is one of the most common causes of acute lower respiratory tract infections worldwide. Fungal infections complicating influenza pneumonia are associated with increased disease severity and mortality, with invasive pulmonary aspergillosis being the most common manifestation. Strikingly, similar observations have been made during the current coronavirus disease 2019 (COVID-19) pandemic. The copathogenesis of respiratory viral and fungal coinfections is complex and involves a dynamic interplay between the host immune defenses and the virulence of the microbes involved that often results in failure to return to homeostasis. In this review, we discuss the main mechanisms underlying susceptibility to invasive fungal disease following respiratory viral infections. A comprehensive understanding of these interactions will aid the development of therapeutic modalities against newly identified targets to prevent and treat these emerging coinfections.
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Affiliation(s)
- Fabián Salazar
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Elaine Bignell
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Gordon D. Brown
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Peter C. Cook
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Adilia Warris
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
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Alnaqbi H, Tay GK, Jelinek HF, Francis A, Alefishat E, El Haj Chehadeh S, Tahir Saeed A, Hussein M, Laila Salameh, Mahboub BH, Uddin M, Alkaabi N, Alsafar HS. HLA repertoire of 115 UAE nationals infected with SARS-CoV-2. Hum Immunol 2022; 83:1-9. [PMID: 34462158 PMCID: PMC8391094 DOI: 10.1016/j.humimm.2021.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 08/16/2021] [Accepted: 08/18/2021] [Indexed: 12/11/2022]
Abstract
The class I and class II Human Leucocyte Antigens (HLA) are an integral part of the host adaptive immune system against viral infections. The characterization of HLA allele frequency in the population can play an important role in determining whether HLA antigens contribute to viral susceptibility. In this regard, global efforts are currently underway to study possible correlations between HLA alleles with the occurrence and severity of SARS-CoV-2 infection. Specifically, this study examined the possible association between specific HLA alleles and susceptibility to SARS-CoV-2 in a population from the United Arab Emirates (UAE). The frequencies of HLA class I (HLA-A, -B, and -C) and HLA class II alleles (HLA-DRB1 and -DQB1); defined using Next Generation Sequencing (NGS); from 115 UAE nationals with mild, moderate, and severe SARS-CoV-2 infection are presented here. HLA alleles and supertypes were compared between hospitalized and non-hospitalized subjects. Statistical significance was observed between certain HLA alleles and supertypes and the severity of the infection. Specifically, alleles HLA-B*51:01 and HLA-A*26:01 showed a negative association (suggestive of protection), whilst genotypes HLA-A*03:01, HLA-DRB1*15:01, and supertype B44 showed a positive association (suggestive of predisposition) to COVID-19 severity. The results support the potential use of HLA testing to differentiate between patients who require specific clinical management strategies.
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Affiliation(s)
- Halima Alnaqbi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Division of Psychiatry, Faculty of Health and Medical Sciences, the University of Western Australia, Crawley, Western Australia, Australia; School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Herbert F Jelinek
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Heath Engineering Innovation Center, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Amirtharaj Francis
- Clinical Services, Medical Affairs, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates
| | - Eman Alefishat
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Biopharmaceutics & Clinical Pharmacy, University of Jordan, Amman, Jordan
| | - Sarah El Haj Chehadeh
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Amna Tahir Saeed
- Dubai Health Authority, Rashid Hospital, Dubai, United Arab Emirates
| | - Mawada Hussein
- Dubai Health Authority, Rashid Hospital, Dubai, United Arab Emirates
| | - Laila Salameh
- Dubai Health Authority, Rashid Hospital, Dubai, United Arab Emirates
| | - Bassam H Mahboub
- Dubai Health Authority, Rashid Hospital, Dubai, United Arab Emirates
| | - Maimunah Uddin
- Department of Pediatric Infectious Disease, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates
| | - Nawal Alkaabi
- Department of Pediatric Infectious Disease, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates
| | - Habiba S Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.
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3
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Wu CY, Chuang HY, Wong CH. Influenza virus neuraminidase regulates host CD8 + T-cell response in mice. Commun Biol 2020; 3:748. [PMID: 33293641 DOI: 10.1038/s42003-020-01486-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 11/03/2020] [Indexed: 11/08/2022] Open
Abstract
Influenza A virus (IAV)-specific CD8+ T-cell response was shown to provide protection against pandemic and seasonal influenza infections. However, the response was often relatively weak and the mechanism was unclear. Here, we show that the composition of IAV released from infected cells is regulated by the neuraminidase (NA) activity and the cells infected by NA-defective virus cause intracellular viral protein accumulation and cell death. In addition, after uptake of NA-defective viruses by dendritic cells (DCs), an expression of the major histocompatibility complex class I is induced to activate IAV-specific CD8+ T-cell response. When mice were infected by NA-defective IAV, a CD8+ T-cell response to the highly conserved viral antigens including PB1, NP, HA, M1, M2 and NS1 was observed along with the increasing expression of IL10, IL12 and IL27. Vaccination of mice with NA-defective H1N1 A/WSN/33 induced a strong IAV-specific CD8+ T cell response against H1N1, H3N2 and H5N1. This study reveals the role of NA in the IAV-specific CD8+ T-cell response and virion assembly process, and provides an alternative direction toward the development of universal influenza vaccines.
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Dettling S, Stamova S, Warta R, Schnölzer M, Rapp C, Rathinasamy A, Reuss D, Pocha K, Roesch S, Jungk C, Warnken U, Eckstein V, Grabe N, Schramm C, Weigand MA, von Deimling A, Unterberg A, Beckhove P, Herold-Mende C. Identification of CRKII, CFL1, CNTN1, NME2, and TKT as Novel and Frequent T-Cell Targets in Human IDH-Mutant Glioma. Clin Cancer Res 2018; 24:2951-2962. [PMID: 29563135 DOI: 10.1158/1078-0432.ccr-17-1839] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 11/23/2017] [Accepted: 03/15/2018] [Indexed: 11/16/2022]
Abstract
Purpose: Successful immunotherapies for IDHmut gliomas require better knowledge of T-cell target antigens. Here, we elucidated their antigen repertoire recognized by spontaneous T-cell responses using an unbiased proteomic approach.Experimental Design: Protein fractionations of tissue lysates from IDHmut gliomas (n = 4) were performed. Fractions were tested by IFNγ ELISpot assay for recognition through patients' T cells. Proteins of immunogenic fractions were identified by mass spectrometry and validated by in silico-predicted synthetic long peptides in patients of origin, additional IDHmut glioma patients (n = 16), and healthy donors (n = 13). mRNA and protein expression of immunogenic antigens was analyzed in tumor tissues and IDHmut glioma stem-like cells (GSC). HLA-A*02-restricted T-cell epitopes were functionally determined by short peptides and numbers of antigen-specific T cells by HLA-peptide tetramer analysis.Results: A total of 2,897 proteins were identified in immunogenic tumor fractions. Based on a thorough filter process, 79 proteins were selected as potential T-cell antigens. Twenty-six of these were recognized by the patients' T cells, and five of them (CRKII, CFL1, CNTN1, NME2, and TKT) in up to 56% unrelated IDHmut glioma patients. Most immunogenic tumor-associated antigens (TAA) were expressed in IDHmut gliomas and GSCs, while being almost absent in normal brain tissues. Finally, we identified HLA-A*02-restricted epitopes for CRKII, NME2, and TKT that were recognized by up to 2.82% of antigen-specific peripheral cytotoxic T cells in IDHmut glioma patients.Conclusions: By analyzing the repertoire of T-cell target antigens in IDHmut glioma patients, we identified five novel immunogenic TAAs and confirmed their expression on IDHmut tumors and GSCs. Clin Cancer Res; 24(12); 2951-62. ©2018 AACR.
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Affiliation(s)
- Steffen Dettling
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Slava Stamova
- Regensburg Center for Interventional Immunology (RCI) and University Medical Center of Regensburg, Regensburg, Germany
| | - Rolf Warta
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Martina Schnölzer
- Functional Proteome Analysis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Carmen Rapp
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Anchana Rathinasamy
- Regensburg Center for Interventional Immunology (RCI) and University Medical Center of Regensburg, Regensburg, Germany
| | - David Reuss
- Department of Neuropathology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany.,German Cancer Consortium (DKTK), CCU Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kolja Pocha
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Saskia Roesch
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Christine Jungk
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Uwe Warnken
- Functional Proteome Analysis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Volker Eckstein
- Department of Internal Medicine V, Heidelberg University Hospital, Heidelberg, Germany
| | - Niels Grabe
- Hamamatsu Tissue Imaging and Analysis Center (TIGA), BIOQUANT, University of Heidelberg, Heidelberg, Germany
| | - Christoph Schramm
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Markus A Weigand
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Andreas von Deimling
- Department of Neuropathology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany.,German Cancer Consortium (DKTK), CCU Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Andreas Unterberg
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Philipp Beckhove
- Regensburg Center for Interventional Immunology (RCI) and University Medical Center of Regensburg, Regensburg, Germany
| | - Christel Herold-Mende
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany.
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Graham JP, Authie P, Karolina Palucka A, Zurawski G. Targeting interferon-alpha to dendritic cells enhances a CD8 + T cell response to a human CD40-targeted cancer vaccine. Vaccine 2017; 35:4532-4539. [PMID: 28743486 DOI: 10.1016/j.vaccine.2017.07.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/23/2017] [Accepted: 07/12/2017] [Indexed: 01/06/2023]
Abstract
Targeting antigens to antigen presenting cells (APC) enhances the potency of recombinant protein CD8+ T cell vaccines. Recent comparisons of recombinant protein-based dendritic cell (DC) targeting vaccines revealed differences in cross-presentation and identified CD40 as a potent human DC receptor target for antigen cross-presentation. Contrary to in vitro-derived monocyte (mo)DC, we found that interferon-alpha (IFNα) stimulation of human blood-derived DC was necessary for an antigen-specific IFNγ CD8+ T cell response to a CD40 targeted cancer vaccine. Importantly, targeting an adjuvant in the form of IFNα to DC increased their potency to elicit antigen-specific production of IFNγ by CD8+ T cells. Thus, we introduce the concept of DC adjuvant targeting to enhance the potency of vaccination.
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Affiliation(s)
- John P Graham
- The Ralph Steinman Center for Cancer Vaccines, Baylor Institute for Immunology Research, Baylor Scott and White Research Institute, Dallas, TX 75204, USA
| | - Pierre Authie
- The Ralph Steinman Center for Cancer Vaccines, Baylor Institute for Immunology Research, Baylor Scott and White Research Institute, Dallas, TX 75204, USA
| | - A Karolina Palucka
- The Ralph Steinman Center for Cancer Vaccines, Baylor Institute for Immunology Research, Baylor Scott and White Research Institute, Dallas, TX 75204, USA
| | - Gerard Zurawski
- The Ralph Steinman Center for Cancer Vaccines, Baylor Institute for Immunology Research, Baylor Scott and White Research Institute, Dallas, TX 75204, USA; Vaccine Research Institute, Université Paris-Est, Faculté de Médecine, INSERM U955, USA.
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Ammi R, De Waele J, Willemen Y, Van Brussel I, Schrijvers DM, Lion E, Smits ELJ. Poly(I:C) as cancer vaccine adjuvant: knocking on the door of medical breakthroughs. Pharmacol Ther 2014; 146:120-31. [PMID: 25281915 DOI: 10.1016/j.pharmthera.2014.09.010] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 01/03/2023]
Abstract
Although cancer vaccination has yielded promising results in patients, the objective response rates are low. The right choice of adjuvant might improve the efficacy. Here, we review the biological rationale, as well as the preclinical and clinical results of polyinosinic:polycytidylic acid and its derivative poly-ICLC as cancer vaccine adjuvants. These synthetic immunological danger signals enhanced vaccine-induced anti-tumor immune responses and contributed to tumor elimination in animal tumor models and patients. Supported by these results, poly-ICLC-containing cancer vaccines are currently extensively studied in the ongoing trials, making it highly plausible that poly-ICLC will be part of the future approved cancer immunotherapies.
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Affiliation(s)
- Rachid Ammi
- Laboratory of Physiopharmacology, University of Antwerp, B-2610 Antwerp, Belgium
| | - Jorrit De Waele
- Center for Oncological Research, University of Antwerp, B-2610 Antwerp, Belgium
| | - Yannick Willemen
- Tumor Immunology Group, Laboratory of Experimental Hematology, Vaccine & Infectious Disease Institute (VAXINFECTIO), University of Antwerp, B-2650 Edegem, Belgium
| | - Ilse Van Brussel
- Laboratory of Physiopharmacology, University of Antwerp, B-2610 Antwerp, Belgium
| | - Dorien M Schrijvers
- Laboratory of Physiopharmacology, University of Antwerp, B-2610 Antwerp, Belgium
| | - Eva Lion
- Tumor Immunology Group, Laboratory of Experimental Hematology, Vaccine & Infectious Disease Institute (VAXINFECTIO), University of Antwerp, B-2650 Edegem, Belgium; Center for Cell Therapy & Regenerative Medicine, Antwerp University Hospital, B-2650 Edegem, Belgium
| | - Evelien L J Smits
- Center for Oncological Research, University of Antwerp, B-2610 Antwerp, Belgium; Tumor Immunology Group, Laboratory of Experimental Hematology, Vaccine & Infectious Disease Institute (VAXINFECTIO), University of Antwerp, B-2650 Edegem, Belgium; Center for Cell Therapy & Regenerative Medicine, Antwerp University Hospital, B-2650 Edegem, Belgium.
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7
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van Montfoort N, van der Aa E, Woltman AM. Understanding MHC class I presentation of viral antigens by human dendritic cells as a basis for rational design of therapeutic vaccines. Front Immunol 2014; 5:182. [PMID: 24795724 PMCID: PMC4005948 DOI: 10.3389/fimmu.2014.00182] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/07/2014] [Indexed: 12/24/2022] Open
Abstract
Effective viral clearance requires the induction of virus-specific CD8+ cytotoxic T lymphocytes (CTL). Since dendritic cells (DC) have a central role in initiating and shaping virus-specific CTL responses, it is important to understand how DC initiate virus-specific CTL responses. Some viruses can directly infect DC, which theoretically allow direct presentation of viral antigens to CTL, but many viruses target other cells than DC and thus the host depends on the cross-presentation of viral antigens by DC to activate virus-specific CTL. Research in mouse models has highly enhanced our understanding of the mechanisms underlying cross-presentation and the dendritic cells (DC) subsets involved, however, these results cannot be readily translated toward the role of human DC in MHC class I-antigen presentation of human viruses. Here, we summarize the insights gained in the past 20 years on MHC class I presentation of viral antigen by human DC and add to the current debate on the capacities of different human DC subsets herein. Furthermore, possible sources of viral antigens and essential DC characteristics for effective induction of virus-specific CTL are evaluated. We conclude that cross-presentation is not only an efficient mechanism exploited by DC to initiate immunity to viruses that do not infect DC but also to viruses that do infect DC, because cross-presentation has many conceptual advantages and bypasses direct immune modulatory effects of the virus on its infected target cells. Since knowledge on the mechanism of viral antigen presentation and the preferred DC subsets is crucial for rational vaccine design, the obtained insights are very instrumental for the development of effective anti-viral immunotherapy.
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Affiliation(s)
- Nadine van Montfoort
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam , Rotterdam , Netherlands
| | - Evelyn van der Aa
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam , Rotterdam , Netherlands
| | - Andrea M Woltman
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam , Rotterdam , Netherlands
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Lion E, de Winde CM, Van Tendeloo VFI, Smits ELJM. Loading of acute myeloid leukemia cells with poly(I:C) by electroporation. Methods Mol Biol 2014; 1139:233-241. [PMID: 24619684 DOI: 10.1007/978-1-4939-0345-0_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this chapter, we describe the technique of electroporation as an efficient method to load primary leukemic cells with the double-stranded RNA (dsRNA) analogue, polyriboinosinic polyribocytidylic acid (poly(I:C)), and detail on the delicate freezing and thawing procedure of primary leukemic cells.Electroporation is a non-viral gene transfer method by which short-term pores in the membrane of cells are generated by an electrical pulse, allowing molecules to enter the cell. RNA electroporation, a technique developed in our laboratory, is a widely used and versatile transfection method for efficient introduction of both coding RNA (messenger RNA) and non-coding RNA, e.g., dsRNA and small interfering (siRNA), into mammalian cells. Accurate cell processing and storage of patient material is essential for optimal recovery and quality of the cell product for downstream applications.
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Affiliation(s)
- Eva Lion
- Tumor Immunology Group, Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
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Huang SS, Banner D, Degousee N, Leon AJ, Xu L, Paquette SG, Kanagasabai T, Fang Y, Rubino S, Rubin B, Kelvin DJ, Kelvin AA. Differential pathological and immune responses in newly weaned ferrets are associated with a mild clinical outcome of pandemic 2009 H1N1 infection. J Virol 2012; 86:13187-201. [PMID: 23055557 DOI: 10.1128/JVI.01456-12] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Young children are typically considered a high-risk group for disease associated with influenza virus infection. Interestingly, recent clinical reports suggested that young children were the smallest group of cases with severe pandemic 2009 H1N1 (H1N1pdm) influenza virus infection. Here we established a newly weaned ferret model for the investigation of H1N1pdm infection in young age groups compared to adults. We found that young ferrets had a significantly milder fever and less weight loss than adult ferrets, which paralleled the mild clinical symptoms in the younger humans. Although there was no significant difference in viral clearance, disease severity was associated with pulmonary pathology, where newly weaned ferrets had an earlier pathology improvement. We examined the immune responses associated with protection of the young age group during H1N1pdm infection. We found that interferon and regulatory interleukin-10 responses were more robust in the lungs of young ferrets. In contrast, myeloperoxidase and major histocompatibility complex responses were persistently higher in the adult lungs; as well, the numbers of inflammation-prone granulocytes were highly elevated in the adult peripheral blood. Importantly, we observed that H1N1pdm infection triggered formation of lung structures that resembled inducible bronchus-associated lymphoid tissues (iBALTs) in young ferrets which were associated with high levels of homeostatic chemokines CCL19 and CXCL13, but these were not seen in the adult ferrets with severe disease. These results may be extrapolated to a model of the mild disease seen in human children. Furthermore, these mechanistic analyses provide significant new insight into the developing immune system and effective strategies for intervention and vaccination against respiratory viruses.
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Clavarino G, Cláudio N, Dalet A, Terawaki S, Couderc T, Chasson L, Ceppi M, Schmidt EK, Wenger T, Lecuit M, Gatti E, Pierre P. Protein phosphatase 1 subunit Ppp1r15a/GADD34 regulates cytokine production in polyinosinic:polycytidylic acid-stimulated dendritic cells. Proc Natl Acad Sci U S A 2012; 109:3006-3011. [PMID: 22315398 PMCID: PMC3286954 DOI: 10.1073/pnas.1104491109] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Abstract
In response to inflammatory stimulation, dendritic cells (DCs) have a remarkable pattern of differentiation that exhibits specific mechanisms to control the immune response. Here we show that in response to polyriboinosinic:polyribocytidylic acid (pI:C), DCs mount a specific integrated stress response during which the transcription factor ATF4 and the growth arrest and DNA damage-inducible protein 34 (GADD34/Ppp1r15a), a phosphatase 1 (PP1) cofactor, are expressed. In agreement with increased GADD34 levels, an extensive dephosphorylation of the translation initiation factor eIF2α was observed during DC activation. Unexpectedly, although DCs display an unusual resistance to protein synthesis inhibition induced in response to cytosolic dsRNA, GADD34 expression did not have a major impact on protein synthesis. GADD34, however, was shown to be required for normal cytokine production both in vitro and in vivo. These observations have important implications in linking further pathogen detection with the integrated stress response pathways.
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Affiliation(s)
- Giovanna Clavarino
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Nuno Cláudio
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Alexandre Dalet
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Seigo Terawaki
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Thérèse Couderc
- Microbes and Host Barriers Group, Institut Pasteur, 75015 Paris, France
- INSERM, Equipe avenir U604, 75015 Paris, France; and
| | - Lionel Chasson
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Maurizio Ceppi
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Enrico K. Schmidt
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Till Wenger
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Marc Lecuit
- Microbes and Host Barriers Group, Institut Pasteur, 75015 Paris, France
- INSERM, Equipe avenir U604, 75015 Paris, France; and
- Service des Maladies Infectieuses et Tropicales, Université Paris Descartes, Hôpital Necker-Enfants malades, Assistance Publique-Hôpitaux de Paris, 75015 Paris, France
| | - Evelina Gatti
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
| | - Philippe Pierre
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille University, 13288 Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U631, 13288 Marseille, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6102, 13288 Marseille, France
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Siddiqui S, Basta S. CD8+ T cell immunodominance in lymphocytic choriomeningitis virus infection is modified in the presence of toll-like receptor agonists. J Virol 2011; 85:13224-33. [PMID: 21957295 DOI: 10.1128/JVI.05996-11] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Currently, we have limited understanding of how Toll-like receptor (TLR) engagement by microbial products influences the immune response during a concurrent virus infection. In this study, we established that dual TLR2 plus TLR3 (designated TLR2+3) stimulation alters the immunodominance hierarchies of lymphocytic choriomeningitis virus (LCMV) epitopes by reducing NP396-specific CD8+ T cell responses and shifting it to a subdominant position. The shift in immunodominance occurred due to a reduction in antigen uptake and the reduced cross-presentation of NP396, a major LCMV immunodominant epitope that is efficiently cross-presented. Moreover, the altered immunodominance was dependent on TLR stimulation occurring at the site of infection. Finally, as lipopolysaccharide failed to induce the same phenomenon, the data suggest that these findings are dependent not only on the dual engagement of the TRIF/MyD88 pathways but also on how TLR agonists activate antigen-presenting cells. Taken together, our data demonstrate a novel role for TLR ligands in regulating antiviral CD8+ T cell responses due to the regulation of the cross-presentation of cell-associated antigens.
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Lion E, Anguille S, Berneman ZN, Smits ELJM, Van Tendeloo VFI. Poly(I:C) enhances the susceptibility of leukemic cells to NK cell cytotoxicity and phagocytosis by DC. PLoS One 2011; 6:e20952. [PMID: 21698118 PMCID: PMC3117863 DOI: 10.1371/journal.pone.0020952] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 05/13/2011] [Indexed: 12/20/2022] Open
Abstract
α Active specific immunotherapy aims at stimulating the host's immune system to recognize and eradicate malignant cells. The concomitant activation of dendritic cells (DC) and natural killer (NK) cells is an attractive modality for immune-based therapies. Inducing immunogenic cell death to facilitate tumor cell recognition and phagocytosis by neighbouring immune cells is of utmost importance for guiding the outcome of the immune response. We previously reported that acute myeloid leukemic (AML) cells in response to electroporation with the synthetic dsRNA analogue poly(I:C) exert improved immunogenicity, demonstrated by enhanced DC-activating and NK cell interferon-γ-inducing capacities. To further invigorate the potential of these immunogenic tumor cells, we explored their effect on the phagocytic and cytotoxic capacity of DC and NK cells, respectively. Using single-cell analysis, we assessed these functionalities in two- and three-party cocultures. Following poly(I:C) electroporation AML cells become highly susceptible to NK cell-mediated killing and phagocytosis by DC. Moreover, the enhanced killing and the improved uptake are strongly correlated. Interestingly, tumor cell killing, but not phagocytosis, is further enhanced in three-party cocultures provided that these tumor cells were upfront electroporated with poly(I:C). Altogether, poly(I:C)-electroporated AML cells potently activate DC and NK cell functions and stimulate NK-DC cross-talk in terms of tumor cell killing. These data strongly support the use of poly(I:C) as a cancer vaccine component, providing a way to overcome immune evasion by leukemic cells.
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Affiliation(s)
- Eva Lion
- Vaccine & Infectious Disease Institute (Vaxinfectio), Laboratory of Experimental Hematology, Faculty of Medicine, University of Antwerp, Antwerp, Belgium.
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Yu M, Levine SJ. Toll-like receptor, RIG-I-like receptors and the NLRP3 inflammasome: key modulators of innate immune responses to double-stranded RNA viruses. Cytokine Growth Factor Rev 2011; 22:63-72. [PMID: 21466970 PMCID: PMC3109132 DOI: 10.1016/j.cytogfr.2011.02.001] [Citation(s) in RCA: 139] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Double-stranded RNA (dsRNA), the genetic material for many RNA viruses, induces robust host immune responses via pattern recognition receptors, which include Toll-like receptor 3 (TLR3), retinoic acid-inducible gene-I-like receptors (RLRs) and the multi-protein NLRP3 inflammasome complex. The engagement of dsRNA receptors or inflammasome activation by viral dsRNA initiates complex intracellular signaling cascades that play essential roles in inflammation and innate immune responses, as well as the resultant development of adaptive immunity. This review focuses on signaling pathways mediated by TLR3, RLRs and the NLRP3 inflammasome, as well as the potential use of agonists and antagonists that target these pathways to treat disease.
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Affiliation(s)
- Man Yu
- Cardiovascular and Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, United States
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Bansal GP, Leitner WW. Innate immunity in HIV infection and implications for vaccine design: A summary of the workshop held at the National Institute of Allergy and Infectious Diseases, Bethesda on February 25–26, 2010. Vaccine 2010; 28:8229-35. [DOI: 10.1016/j.vaccine.2010.10.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 10/22/2010] [Accepted: 10/27/2010] [Indexed: 10/18/2022]
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15
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Kruijsen D, Bakkers MJ, van Uden NO, Viveen MC, van der Sluis TC, Kimpen JL, Leusen JH, Coenjaerts FE, van Bleek GM. Serum antibodies critically affect virus-specific CD4+/CD8+ T cell balance during respiratory syncytial virus infections. J Immunol 2010; 185:6489-98. [PMID: 20971927 DOI: 10.4049/jimmunol.1002645] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Following infection with respiratory syncytial virus (RSV), reinfection in healthy individuals is common and presumably due to ineffective memory T cell responses. In peripheral blood of healthy adults, a higher CD4(+)/CD8(+) memory T cell ratio was observed compared with the ratio of virus-specific effector CD4(+)/CD8(+) T cells that we had found in earlier work during primary RSV infections. In mice, we show that an enhanced ratio of RSV-specific neutralizing to nonneutralizing Abs profoundly enhanced the CD4(+) T cell response during RSV infection. Moreover, FcγRs and complement factor C1q contributed to this Ab-mediated enhancement. Therefore, the increase in CD4(+) memory T cell response likely occurs through enhanced endosomal Ag processing dependent on FcγRs. The resulting shift in memory T cell response was likely amplified by suppressed T cell proliferation caused by RSV infection of APCs, a route important for Ag presentation via MHC class I molecules leading to CD8(+) T cell activation. Decreasing memory CD8(+) T cell numbers could explain the inadequate immunity during repeated RSV infections. Understanding this interplay of Ab-mediated CD4(+) memory T cell response enhancement and infection mediated CD8(+) memory T cell suppression is likely critical for development of effective RSV vaccines.
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Affiliation(s)
- Debby Kruijsen
- Department of Pediatrics, Wilhelmina Children's Hospital, Utrecht, The Netherlands
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Benwell RK, Hruska JE, Fritsche KL, Lee DR. Double stranded RNA- relative to other TLR ligand-activated dendritic cells induce extremely polarized human Th1 responses. Cell Immunol 2010; 264:119-26. [DOI: 10.1016/j.cellimm.2010.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 05/11/2010] [Accepted: 05/17/2010] [Indexed: 01/25/2023]
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Lui G, Manches O, Angel J, Molens JP, Chaperot L, Plumas J. Plasmacytoid dendritic cells capture and cross-present viral antigens from influenza-virus exposed cells. PLoS One 2009; 4:e7111. [PMID: 19771163 DOI: 10.1371/journal.pone.0007111] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 08/20/2009] [Indexed: 11/19/2022] Open
Abstract
Among the different subsets of dendritic cells (DC), plasmacytoid dendritic cells (PDC) play a unique role in secreting large amounts of type I interferons upon viral stimulation, but their efficiency as antigen-presenting cells has not been completely characterized. We show here, by flow cytometry, with human primary blood PDC and with a PDC cell line, that PDC display poor endocytic capacity for soluble or cellular antigens when compared to monocyte-derived myeloid DC. However, immature PDC efficiently take up cellular material from live influenza-exposed cells, subsequently mature and cross-present viral antigens very efficiently to specific CD8+ T cells. Therefore, during viral infection PDC not only secrete immunomodulatory cytokines, but also recognize infected cells and function as antigen cross-presenting cells to trigger the anti-viral immune response.
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