1
|
Wallace HL, Russell RS. Inflammatory Consequences: Hepatitis C Virus-Induced Inflammasome Activation and Pyroptosis. Viral Immunol 2024; 37:126-138. [PMID: 38593460 DOI: 10.1089/vim.2023.0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024] Open
Abstract
Hepatitis C virus (HCV), despite the availability of effective direct-acting antivirals (DAAs) that clear the virus from >95% of individuals treated, continues to cause significant health care burden due to disease progression that can lead to fibrosis, cirrhosis, and/or hepatocellular carcinoma. The fact that some people who are treated with DAAs still go on to develop worsening liver disease warrants further study into the immunopathogenesis of HCV. Many viral infections, including HCV, have been associated with activation of the inflammasome/pyroptosis pathway. This inflammatory cell death pathway ultimately results in cell lysis and release of inflammatory cytokines, IL-18 and IL-1β. This review will report on studies that investigated HCV and inflammasome activation/pyroptosis. This includes clinical in vivo data showing elevated pyroptosis-associated cytokines in the blood of individuals living with HCV, studies of genetic associations of pyroptosis-related genes and development of liver disease, and in vitro studies aimed at understanding the mechanism of pyroptosis induced by HCV. Finally, we discuss major gaps in understanding and outstanding questions that remain in the field of HCV-induced pyroptosis.
Collapse
Affiliation(s)
- Hannah L Wallace
- Immunology and Infectious Diseases Group, Division of Biomedical Sciences, Faculty of Medicine, Memorial University, St John's, Canada
| | - Rodney S Russell
- Immunology and Infectious Diseases Group, Division of Biomedical Sciences, Faculty of Medicine, Memorial University, St John's, Canada
| |
Collapse
|
2
|
Joaquín Cáceres C, Claire Gay L, Jain A, Mejías TD, Cardenas M, Seibert B, Faccin FC, Cowan B, Geiger G, Baker AV, Carnaccini S, Huw Davies D, Rajao DS, Perez DR. FLUAV RAM-IGIP: A modified live influenza virus vaccine that enhances humoral and mucosal responses against influenza. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.23.576908. [PMID: 38328128 PMCID: PMC10849573 DOI: 10.1101/2024.01.23.576908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Current influenza A vaccines fall short, leaving both humans and animals vulnerable. To address this issue, we have developed attenuated modified live virus (MLV) vaccines against influenza using genome rearrangement techniques targeting the internal gene segments of FLUAV. The rearranged M2 (RAM) strategy involves cloning the M2 ORF downstream of the PB1 ORF in segment 2 and incorporating multiple early stop codons within the M2 ORF in segment 7. Additionally, the IgA-inducing protein (IGIP) coding region was inserted into the HA segment to further attenuate the virus and enhance protective mucosal responses. RAM-IGIP viruses exhibit similar growth rates to wild type (WT) viruses in vitro and remain stable during multiple passages in cells and embryonated eggs. The safety, immunogenicity, and protective efficacy of the RAM-IGIP MLV vaccine against the prototypical 2009 pandemic H1N1 strain A/California/04/2009 (H1N1) (Ca/04) were evaluated in Balb/c mice and compared to a prototypic cold-adapted live attenuated virus vaccine. The results demonstrate that the RAM-IGIP virus exhibits attenuated virulence in vivo. Mice vaccinated with RAM-IGIP and subsequently challenged with an aggressive lethal dose of the Ca/04 strain exhibited complete protection. Analysis of the humoral immune response revealed that the inclusion of IGIP enhanced the production of neutralizing antibodies and augmented the antibody-dependent cellular cytotoxicity response. Similarly, the RAM-IGIP potentiated the mucosal immune response against various FLUAV subtypes. Moreover, increased antibodies against NP and NA responses were observed. These findings support the development of MLVs utilizing genome rearrangement strategies in conjunction with the incorporation of immunomodulators. IMPORTANCE Current influenza vaccines offer suboptimal protection, leaving both humans and animals vulnerable. Our novel attenuated MLV vaccine, built by rearranging FLUAV genome segments and incorporating the IgA-inducing protein, shows promising results. This RAM-IGIP vaccine exhibits safe attenuation, robust immune responses, and complete protection against lethal viral challenge in mice. Its ability to stimulate broad-spectrum humoral and mucosal immunity against diverse FLUAV subtypes makes it a highly promising candidate for improved influenza vaccines.
Collapse
|
3
|
Niu J, Meng G. Roles and Mechanisms of NLRP3 in Influenza Viral Infection. Viruses 2023; 15:1339. [PMID: 37376638 DOI: 10.3390/v15061339] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Pathogenic viral infection represents a major challenge to human health. Due to the vast mucosal surface of respiratory tract exposed to the environment, host defense against influenza viruses has perpetually been a considerable challenge. Inflammasomes serve as vital components of the host innate immune system and play a crucial role in responding to viral infections. To cope with influenza viral infection, the host employs inflammasomes and symbiotic microbiota to confer effective protection at the mucosal surface in the lungs. This review article aims to summarize the current findings on the function of NACHT, LRR and PYD domains-containing protein 3 (NLRP3) in host response to influenza viral infection involving various mechanisms including the gut-lung crosstalk.
Collapse
Affiliation(s)
- Junling Niu
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, 320 Yueyang Road, Life Science Research Building B-205, Shanghai 200031, China
| | - Guangxun Meng
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, 320 Yueyang Road, Life Science Research Building B-205, Shanghai 200031, China
| |
Collapse
|
4
|
Lim YS, Lee AG, Jiang X, Scott JM, Cofie A, Kumar S, Kennedy D, Granville DJ, Shin H. NK cell-derived extracellular granzyme B drives epithelial ulceration during HSV-2 genital infection. Cell Rep 2023; 42:112410. [PMID: 37071533 DOI: 10.1016/j.celrep.2023.112410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/25/2023] [Accepted: 04/04/2023] [Indexed: 04/19/2023] Open
Abstract
Genital herpes is characterized by recurrent episodes of epithelial blistering. The mechanisms causing this pathology are ill defined. Using a mouse model of vaginal herpes simplex virus 2 (HSV-2) infection, we show that interleukin-18 (IL-18) acts upon natural killer (NK) cells to promote accumulation of the serine protease granzyme B in the vagina, coinciding with vaginal epithelial ulceration. Genetic loss of granzyme B or therapeutic inhibition by a specific protease inhibitor reduces disease and restores epithelial integrity without altering viral control. Distinct effects of granzyme B and perforin deficiency on pathology indicates that granzyme B acts independent of its classic cytotoxic role. IL-18 and granzyme B are markedly elevated in human herpetic ulcers compared with non-herpetic ulcers, suggesting engagement of these pathways in HSV-infected patients. Our study reveals a role for granzyme B in destructing mucosal epithelium during HSV-2 infection, identifying a therapeutic target to augment treatment of genital herpes.
Collapse
Affiliation(s)
- Ying Shiang Lim
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Aisha G Lee
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Xiaoping Jiang
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jason M Scott
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Adjoa Cofie
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sandeep Kumar
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dania Kennedy
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - David J Granville
- International Collaboration on Repair Discoveries Centre, Vancouver Coastal Health Research Institute, Vancouver, BC V5Z 1M9, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 1Z7, Canada; BC Professional Firefighters' Burn and Wound Healing Research Laboratory, Vancouver, BC V5V 3P1, Canada
| | - Haina Shin
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
| |
Collapse
|
5
|
Wallace HL, Russell RS. Promiscuous Inflammasomes: The False Dichotomy of RNA/DNA Virus-Induced Inflammasome Activation and Pyroptosis. Viruses 2022; 14:2113. [PMID: 36298668 PMCID: PMC9609106 DOI: 10.3390/v14102113] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/16/2022] [Accepted: 09/18/2022] [Indexed: 07/30/2023] Open
Abstract
It is well-known that viruses activate various inflammasomes, which can initiate the programmed cell death pathway known as pyroptosis, subsequently leading to cell lysis and release of inflammatory cytokines IL-1β and IL-18. This pathway can be triggered by various sensors, including, but not limited to, NLRP3, AIM2, IFI16, RIG-I, and NLRC4. Many viruses are known either to activate or inhibit inflammasomes as a part of the innate immune response or as a mechanism of pathogenesis. Early research in the field of virus-induced pyroptosis suggested a dichotomy, with RNA viruses activating the NLRP3 inflammasome and DNA viruses activating the AIM2 inflammasome. More recent research has shown that this dichotomy may not be as distinct as once thought. It seems many viruses activate multiple inflammasome sensors. Here, we detail which viruses fit the dichotomy as well as many that appear to defy this clearly false dichotomy. It seems likely that most, if not all, viruses activate multiple inflammasome sensors, and future research should focus on expanding our understanding of inflammasome activation in a variety of tissue types as well as virus activation of multiple inflammasomes, challenging biases that stemmed from early literature in this field. Here, we review primarily research performed on human viruses but also include details regarding animal viruses whenever possible.
Collapse
|
6
|
Varghese PM, Kishore U, Rajkumari R. Innate and adaptive immune responses against Influenza A Virus: Immune evasion and vaccination strategies. Immunobiology 2022; 227:152279. [DOI: 10.1016/j.imbio.2022.152279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022]
|
7
|
Declercq J, De Leeuw E, Lambrecht BN. Inflammasomes and IL-1 family cytokines in SARS-CoV-2 infection: From prognostic marker to therapeutic agent. Cytokine 2022; 157:155934. [PMID: 35709568 PMCID: PMC9170572 DOI: 10.1016/j.cyto.2022.155934] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 01/08/2023]
|
8
|
Su CC, Gao CM, Peng FT, Jou TS, Wang IJ. Host Immune Response and Associated Clinical Features in a Primary Cytomegalovirus Eye Infection Model Using Anterior Chamber Inoculation. Invest Ophthalmol Vis Sci 2022; 63:18. [PMID: 35579904 PMCID: PMC9123510 DOI: 10.1167/iovs.63.5.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose To investigate the pathogenesis of cytomegalovirus (CMV)-associated anterior segment infection in immunocompetent hosts and evaluate the effects of ganciclovir and glucocorticoid treatment in management of the disease. Methods We used an inoculation model to reproduce CMV anterior segment infection in immunocompetent rats. Flow cytometry, cytokine analysis, histopathological sections, and quantitative polymerase chain reaction were performed to investigate the immune response after CMV infection. The effects of ganciclovir and glucocorticoid treatment were also assessed. Results Anterior chamber inoculation of CMV in rats provoked characteristic pathological features of human CMV anterior segment infection. The innate and adaptive immunity sequentially developed in an anterior segment after inoculation, and the elevation of intraocular pressure (IOP) was highly associated with ocular infiltration and inflammation. Early ocular immune response reduced virus DNA in the anterior segment and alleviated viral lymphadenopathy. Early intervention with ganciclovir enhanced the release of cytokines associated with T response and facilitated recruitment of NKT and T cells in drainage lymph nodes. Glucocorticoid treatment, alone or combined with ganciclovir, decreased elevation of IOP but also impeded DNA clearance. Conclusions The inoculation model reproduced characteristic pathological features of human CMV anterior segment infection. The use of glucocorticoid in current practice may hinder viral clearance, and ganciclovir therapy can assist cytokine expression to combat the virus.
Collapse
Affiliation(s)
- Chien-Chia Su
- Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan.,College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chia-Mao Gao
- Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan
| | - Fu-Ti Peng
- Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan
| | - Tzuu-Shuh Jou
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan.,College of Medicine, National Taiwan University, Taipei, Taiwan.,Center of Precision Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - I-Jong Wang
- Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.,College of Medicine, National Taiwan University, Taipei, Taiwan
| |
Collapse
|
9
|
Hulme KD, Noye EC, Short KR, Labzin LI. Dysregulated Inflammation During Obesity: Driving Disease Severity in Influenza Virus and SARS-CoV-2 Infections. Front Immunol 2021; 12:770066. [PMID: 34777390 PMCID: PMC8581451 DOI: 10.3389/fimmu.2021.770066] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/30/2021] [Indexed: 12/15/2022] Open
Abstract
Acute inflammation is a critical host defense response during viral infection. When dysregulated, inflammation drives immunopathology and tissue damage. Excessive, damaging inflammation is a hallmark of both pandemic influenza A virus (IAV) infections and Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) infections. Chronic, low-grade inflammation is also a feature of obesity. In recent years, obesity has been recognized as a growing pandemic with significant mortality and associated costs. Obesity is also an independent risk factor for increased disease severity and death during both IAV and SARS-CoV-2 infection. This review focuses on the effect of obesity on the inflammatory response in the context of viral respiratory infections and how this leads to increased viral pathology. Here, we will review the fundamentals of inflammation, how it is initiated in IAV and SARS-CoV-2 infection and its link to disease severity. We will examine how obesity drives chronic inflammation and trained immunity and how these impact the immune response to IAV and SARS-CoV-2. Finally, we review both medical and non-medical interventions for obesity, how they impact on the inflammatory response and how they could be used to prevent disease severity in obese patients. As projections of global obesity numbers show no sign of slowing down, future pandemic preparedness will require us to consider the metabolic health of the population. Furthermore, if weight-loss alone is insufficient to reduce the risk of increased respiratory virus-related mortality, closer attention must be paid to a patient’s history of health, and new therapeutic options identified.
Collapse
Affiliation(s)
- Katina D Hulme
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Ellesandra C Noye
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Kirsty R Short
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia.,Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Larisa I Labzin
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| |
Collapse
|
10
|
Wang Y, Karki R, Zheng M, Kancharana B, Lee S, Kesavardhana S, Hansen BS, Pruett-Miller SM, Kanneganti TD. Cutting Edge: Caspase-8 Is a Linchpin in Caspase-3 and Gasdermin D Activation to Control Cell Death, Cytokine Release, and Host Defense during Influenza A Virus Infection. THE JOURNAL OF IMMUNOLOGY 2021; 207:2411-2416. [PMID: 34663620 DOI: 10.4049/jimmunol.2100757] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/15/2021] [Indexed: 11/19/2022]
Abstract
Programmed cell death (PCD) is essential for the innate immune response, which serves as the first line of defense against pathogens. Caspases regulate PCD, immune responses, and homeostasis. Caspase-8 specifically plays multifaceted roles in PCD pathways including pyroptosis, apoptosis, and necroptosis. However, because caspase-8-deficient mice are embryonically lethal, little is known about how caspase-8 coordinates different PCD pathways under physiological conditions. Here, we report an anti-inflammatory role of caspase-8 during influenza A virus infection. We generated viable mice carrying an uncleavable version of caspase-8 (Casp8 DA/DA). We demonstrated that caspase-8 autoprocessing was responsible for activating caspase-3, thereby suppressing gasdermin D-mediated pyroptosis and inflammatory cytokine release. We also found that apoptotic and pyroptotic pathways were activated at the same time during influenza A virus infection, which enabled the cell-intrinsic anti-inflammatory function of the caspase-8-caspase-3 axis. Our findings provide new insight into the immunological consequences of caspase-8-coordinated PCD cross-talk under physiological conditions.
Collapse
Affiliation(s)
- Yaqiu Wang
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN; and
| | - Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN; and
| | - Min Zheng
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN; and
| | | | - SangJoon Lee
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN; and
| | - Sannula Kesavardhana
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN; and
| | - Baranda S Hansen
- Center for Advanced Genome Engineering, St. Jude Children's Research Hospital, Memphis, TN
| | | | | |
Collapse
|
11
|
Crooke SN, Goergen KM, Ovsyannikova IG, Kennedy RB. Inflammasome Activity in Response to Influenza Vaccination Is Maintained in Monocyte-Derived Peripheral Blood Macrophages in Older Adults. FRONTIERS IN AGING 2021; 2:719103. [PMID: 35822051 PMCID: PMC9261430 DOI: 10.3389/fragi.2021.719103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/09/2021] [Indexed: 11/13/2022]
Abstract
Introduction: Each year, a disproportionate number of the total seasonal influenza-related hospitalizations (90%) and deaths (70%) occur among adults who are >65 years old. Inflammasome activation has been shown to be important for protection against influenza infection in animal models but has not yet been demonstrated in humans. We hypothesized that age-related dysfunction (immunosenescence) of the inflammasome may be associated with poor influenza-vaccine response among older adults.Methods: A cohort of younger (18–40 years of age) and older (≥65 years of age) adults was recruited prior to the 2014–2015 influenza season. We measured hemagglutination inhibition (HAI) titers in serum before and 28 days after receipt of the seasonal inactivated influenza vaccine. Inflammasome-related gene expression and protein secretion were quantified in monocyte-derived macrophages following stimulation with influenza A/H1N1 virus.Results: Younger adults exhibited higher HAI titers compared to older adults following vaccination, although inflammasome-related protein secretion in response to influenza stimulation was similar between the age groups. Expression of P2RX7 following influenza stimulation was lower among older adults. Interestingly, CFLAR expression was significantly higher among females (p = 2.42 × 10−5) following influenza stimulation and this gene may play an important role in the development of higher HAI antibody titers among older females.Conclusion: Inflammasome activation in response to influenza vaccination appears to be maintained in monocyte-derived macrophages from older adults and does not explain the poor influenza vaccine responses generally observed among this age group.
Collapse
Affiliation(s)
- Stephen N. Crooke
- Mayo Clinic Vaccine Research Group, Mayo Clinic, Rochester, MN, United States
| | - Krista M. Goergen
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, United States
| | | | - Richard B. Kennedy
- Mayo Clinic Vaccine Research Group, Mayo Clinic, Rochester, MN, United States
- *Correspondence: Richard B. Kennedy,
| |
Collapse
|
12
|
Clementi N, Ghosh S, De Santis M, Castelli M, Criscuolo E, Zanoni I, Clementi M, Mancini N. Viral Respiratory Pathogens and Lung Injury. Clin Microbiol Rev 2021; 34:e00103-20. [PMID: 33789928 PMCID: PMC8142519 DOI: 10.1128/cmr.00103-20] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Several viruses target the human respiratory tract, causing different clinical manifestations spanning from mild upper airway involvement to life-threatening acute respiratory distress syndrome (ARDS). As dramatically evident in the ongoing SARS-CoV-2 pandemic, the clinical picture is not always easily predictable due to the combined effect of direct viral and indirect patient-specific immune-mediated damage. In this review, we discuss the main RNA (orthomyxoviruses, paramyxoviruses, and coronaviruses) and DNA (adenoviruses, herpesviruses, and bocaviruses) viruses with respiratory tropism and their mechanisms of direct and indirect cell damage. We analyze the thin line existing between a protective immune response, capable of limiting viral replication, and an unbalanced, dysregulated immune activation often leading to the most severe complication. Our comprehension of the molecular mechanisms involved is increasing and this should pave the way for the development and clinical use of new tailored immune-based antiviral strategies.
Collapse
Affiliation(s)
- Nicola Clementi
- Laboratory of Microbiology and Virology, Vita-Salute San Raffaele University, Milan, Italy
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Sreya Ghosh
- Harvard Medical School, Boston Children's Hospital, Division of Immunology, Boston, Massachusetts, USA
| | - Maria De Santis
- Department of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center-IRCCS, Rozzano, Italy
| | - Matteo Castelli
- Laboratory of Microbiology and Virology, Vita-Salute San Raffaele University, Milan, Italy
| | - Elena Criscuolo
- Laboratory of Microbiology and Virology, Vita-Salute San Raffaele University, Milan, Italy
| | - Ivan Zanoni
- Harvard Medical School, Boston Children's Hospital, Division of Immunology, Boston, Massachusetts, USA
- Harvard Medical School, Boston Children's Hospital, Division of Gastroenterology, Boston, Massachusetts, USA
| | - Massimo Clementi
- Laboratory of Microbiology and Virology, Vita-Salute San Raffaele University, Milan, Italy
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Nicasio Mancini
- Laboratory of Microbiology and Virology, Vita-Salute San Raffaele University, Milan, Italy
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| |
Collapse
|
13
|
Bawazeer AO, Rosli S, Harpur CM, Docherty CA, Mansell A, Tate MD. Interleukin-1β exacerbates disease and is a potential therapeutic target to reduce pulmonary inflammation during severe influenza A virus infection. Immunol Cell Biol 2021; 99:737-748. [PMID: 33834544 PMCID: PMC8453884 DOI: 10.1111/imcb.12459] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/16/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022]
Abstract
Hyperinflammatory responses including the production of NLRP3-dependent interleukin (IL)-1β is a characteristic feature of severe and fatal influenza A virus (IAV) infections. The NLRP3 inflammasome has been shown to play a temporal role during severe IAV immune responses, with early protective and later detrimental responses. However, the specific contribution of IL-1β in modulating IAV disease in vivo is currently not well defined. Here, we identified that activation of NLRP3-dependent IL-1β responses occurs rapidly following HKx31 H3N2 infection, prior to the onset of severe IAV disease. Mature IL-1β was detectable in vivo in both hemopoietic and nonhemopoietic cells. Significantly, therapeutic inhibition of IL-1β in the airways with intranasal anti-IL-1β antibody treatment from day 3 postinfection, corresponding to the onset of clinical signs of disease, significantly prolonged survival and reduced inflammation in the airways. Importantly, early targeting of IL-1β from day 1 postinfection also improved survival. Together, these studies specifically define a role for IL-1β in contributing to the development of hyperinflammation and disease and indicate that targeting IL-1β is a potential therapeutic strategy for severe IAV infections.
Collapse
Affiliation(s)
- Abdulah Os Bawazeer
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia.,King Faisal Medical City for Southern Regions, Abha, Saudi Arabia
| | - Sarah Rosli
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Christopher M Harpur
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Callum Ah Docherty
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Ashley Mansell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Michelle D Tate
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| |
Collapse
|
14
|
Zhai T, Wu X, Zhang N, Huang X, Zhan Q. Inflammatory risk factors for hypertriglyceridemia in patients with severe influenza. J Int Med Res 2021; 48:300060520918058. [PMID: 32776792 PMCID: PMC7871290 DOI: 10.1177/0300060520918058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Objective Inflammation and viral infections can induce significant changes in lipid
metabolism. Hypertriglyceridemia (HTG) often occurs secondary to obesity,
which is an independent risk factor for influenza virus infection. However,
the inflammatory risk factors contributing to HTG in patients with severe
influenza have yet to be elucidated. Materials and methods Plasma and bronchoalveolar lavage fluid (BALF) samples were collected from 33
patients with severe influenza (n = 26 control patients with normal serum
triglyceride levels and n = 7 HTG patients with serum triglycerides
>2.3 mM). Levels of 45 putative inflammatory risk factors were
quantitated using a commercial enzyme-linked immunosorbent assay kit. Results Plasma levels of interferon (IFN)-γ, interleukin (IL)-18, IL-1 receptor
antagonist (IL-1RA), monocyte chemoattractant protein-1, macrophage
inflammatory protein-1α, hepatocyte growth factor, stem cell factor, and
vascular endothelial growth factor A were significantly higher in HTG
patients compared with control patients. BALF samples from HTG patients
contained significantly higher levels of IL-1RA and lower levels of
IFN-γ-inducible protein-10. Conclusion HTG in patients with severe influenza is associated with alterations in
several inflammatory risk factors. Our results provide new insights that may
enable more effective clinical management of severe influenza combined with
HCT.
Collapse
Affiliation(s)
- Tianshu Zhai
- Center for Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Xiaojing Wu
- Center for Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Nannan Zhang
- Center for Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Xu Huang
- Center for Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Qingyuan Zhan
- Center for Respiratory Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| |
Collapse
|
15
|
Distinct cytokine profiles associated with COVID-19 severity and mortality. J Allergy Clin Immunol 2021; 147:2098-2107. [PMID: 33894209 PMCID: PMC8061091 DOI: 10.1016/j.jaci.2021.03.047] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/20/2021] [Accepted: 03/25/2021] [Indexed: 12/21/2022]
Abstract
Background Markedly elevated levels of proinflammatory cytokines and defective type-I interferon responses were reported in patients with coronavirus disease 2019 (COVID-19). Objective We sought to determine whether particular cytokine profiles are associated with COVID-19 severity and mortality. Methods Cytokine concentrations and severe acute respiratory syndrome coronavirus 2 antigen were measured at hospital admission in serum of symptomatic patients with COVID-19 (N = 115), classified at hospitalization into 3 respiratory severity groups: no need for mechanical ventilatory support (No-MVS), intermediate severity requiring mechanical ventilatory support (MVS), and critical severity requiring extracorporeal membrane oxygenation (ECMO). Principal-component analysis was used to characterize cytokine profiles associated with severity and mortality. The results were thereafter confirmed in an independent validation cohort (N = 86). Results At time of hospitalization, ECMO patients presented a dominant proinflammatory response with elevated levels of TNF-α, IL-6, IL-8, and IL-10. In contrast, an elevated type-I interferon response involving IFN-α and IFN-β was characteristic of No-MVS patients, whereas MVS patients exhibited both profiles. Mortality at 1 month was associated with higher levels of proinflammatory cytokines in ECMO patients, higher levels of type-I interferons in No-MVS patients, and their combination in MVS patients, resulting in a combined mortality prediction accuracy of 88.5% (risk ratio, 24.3; P < .0001). Severe acute respiratory syndrome coronavirus 2 antigen levels correlated with type-I interferon levels and were associated with mortality, but not with proinflammatory response or severity. Conclusions Distinct cytokine profiles are observed in association with COVID-19 severity and are differentially predictive of mortality according to oxygen support modalities. These results warrant personalized treatment of COVID-19 patients based on cytokine profiling.
Collapse
|
16
|
Riera Romo M. Cell death as part of innate immunity: Cause or consequence? Immunology 2021; 163:399-415. [PMID: 33682112 DOI: 10.1111/imm.13325] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/11/2021] [Accepted: 02/25/2021] [Indexed: 12/13/2022] Open
Abstract
Regulated or programmed cell death plays a critical role in the development and tissue organization and function. In addition, it is intrinsically connected with immunity and host defence. An increasing cellular and molecular findings cause a change in the concept of cell death, revealing an expanding network of regulated cell death modalities and their biochemical programmes. Likewise, recent evidences demonstrate the interconnection between cell death pathways and how they are involved in different immune mechanisms. This work provides an overview of the main cell death programmes and their implication in innate immunity not only as an immunogenic/inflammatory process, but also as an active defence strategy during immune response and at the same time as a regulatory mechanism.
Collapse
Affiliation(s)
- Mario Riera Romo
- Radiology Department, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
17
|
Sugawara S, Manickam C, Reeves K. TRIGGERED: could refocused cell signaling be key to natural killer cell-based HIV immunotherapeutics? AIDS 2021; 35:165-176. [PMID: 33116071 PMCID: PMC7775286 DOI: 10.1097/qad.0000000000002743] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Natural killer (NK) cells are one of the critical innate immune effector cells that directly kill tumors and virus-infected cells, and modulate other immune cells including dendritic cells, CD4+ and CD8+ T cells. Signals from activating and inhibitory surface receptors orchestrate the regulatory and cytotoxic functions of NK cells. Although a number of surface receptors are involved, multiple signaling molecules are shared so that NK cell responses are synergistically regulated. Many pathogens and tumors evade NK cell responses by targeting NK cell signaling. Particularly in HIV/simian immunodeficiency virus (SIV) infection, the NK cell repertoire is diminished by changes in subsets of NK cells, expression of activating and inhibitory receptors, and intracellular signaling molecules. However, in-depth studies on intracellular signaling in NK cells in HIV/SIV infections remain limited. Checkpoint blockade and chimeric antigen receptor (CAR)-NK cells have demonstrated enhanced NK cell activities against tumors and viral infections. In addition, targeting intracellular signaling molecules by small molecules could also improve NK cell responses towards HIV/SIV infection in vivo. Therefore, further understanding of NK cell signaling including identification of key signaling molecules is crucial to maximize the efficacy of NK cell-based treatments. Herein, we review the current state of the literature and outline potential future avenues where optimized NK cells could be utilized in HIV-1 cure strategies and other immunotherapeutics in PLWH.
Collapse
Affiliation(s)
- Sho Sugawara
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Cordelia Manickam
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Keith Reeves
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Ragon Institute of Massachusetts General Hospital, MIT, and Harvard, Cambridge, MA
| |
Collapse
|
18
|
McCrae C, Olsson M, Gustafson P, Malmgren A, Aurell M, Fagerås M, Da Silva CA, Cavallin A, Paraskos J, Karlsson K, Wingren C, Monk P, Marsden R, Harrison T. INEXAS: A Phase 2 Randomized Trial of On-demand Inhaled Interferon Beta-1a in Severe Asthmatics. Clin Exp Allergy 2021; 51:273-283. [PMID: 33091192 PMCID: PMC7984268 DOI: 10.1111/cea.13765] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/18/2020] [Accepted: 10/17/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Upper respiratory tract infections (URTIs) are important triggers for asthma exacerbations. We hypothesized that inhalation of the anti-viral cytokine, interferon (IFN)-β, during URTI, could prevent these exacerbations. OBJECTIVE To evaluate the efficacy of on-demand inhaled IFN-β1a (AZD9412) to prevent severe asthma exacerbations following symptomatic URTI. METHODS This was a randomized, double-blind, placebo-controlled trial in which patients with severe asthma (GINA 4-5; n = 121) reporting URTI symptoms were randomized to 14 days of once-daily nebulized AZD9412 or placebo. The primary endpoint was severe exacerbations during treatment. Secondary endpoints included 6-item asthma control questionnaire (ACQ-6) and lung function. Exploratory biomarkers included IFN-response markers in serum and sputum, blood leucocyte counts and serum inflammatory cytokines. RESULTS Following a pre-planned interim analysis, the trial was terminated early due to an unexpectedly low exacerbation rate. Asthma worsenings were generally mild and tended to peak at randomization, possibly contributing to the lack of benefit of AZD9412 on other asthma endpoints. Numerically, AZD9412 did not reduce severe exacerbation rate, ACQ-6, asthma symptom scores or reliever medication use. AZD9412 improved lung function (morning peak expiratory flow; mPEF) by 19.7 L/min. Exploratory post hoc analyses indicated a greater mPEF improvement by AZD9412 in patients with high blood eosinophils (>0.3 × 109 /L) at screening and low serum interleukin-18 relative change at pre-treatment baseline. Pharmacodynamic effect of AZD9412 was confirmed using IFN-response markers. CONCLUSIONS & CLINICAL RELEVANCE Colds did not have the impact on asthma patients that was expected and, due to the low exacerbation rate, the trial was stopped early. On-demand AZD9412 treatment did not numerically reduce the number of exacerbations, but did attenuate URTI-induced worsening of mPEF. Severe asthma patients with high blood eosinophils or low serum interleukin-18 response are potential subgroups for further investigation of inhaled IFN-β1a.
Collapse
Affiliation(s)
- Christopher McCrae
- Translational Science and Experimental Medicine, Research and Early DevelopmentRespiratory & Immunology, BioPharmaceuticals R&DAstraZenecaGaithersburgMarylandUSA
- Krefting Research CentreDepartment of Internal Medicine and Clinical NutritionInstitute of MedicineUniversity of GothenburgGothenburgSweden
| | - Marita Olsson
- Early Biometrics and Statistical InnovationData Science and AI, BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Per Gustafson
- BioPharmaceutical MedicalAstraZenecaGothenburgSweden
| | - Anna Malmgren
- Early Respiratory & Immunology Projects DepartmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Malin Aurell
- Early Respiratory & Immunology Clinical DevelopmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Malin Fagerås
- BioPharmaceutical MedicalAstraZenecaGothenburgSweden
| | - Carla A. Da Silva
- Early Respiratory & Immunology Clinical DevelopmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Anders Cavallin
- Translational Science and Experimental MedicineEarly Cardiovascular, Renal and Metabolism (CVRM)BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Jonathan Paraskos
- Point of Care Diagnostics, Precision MedicineOncology R&DAstraZenecaCambridgeUK
| | - Karin Karlsson
- Translational Science and Experimental MedicineEarly Cardiovascular, Renal and Metabolism (CVRM)BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Cecilia Wingren
- Translational Science and Experimental Medicine, Research and Early DevelopmentRespiratory & Immunology, BioPharmaceuticals R&DAstraZenecaGaithersburgMarylandUSA
| | - Phillip Monk
- Synairgen Research LtdSouthampton University HospitalSouthamptonUK
| | - Richard Marsden
- Synairgen Research LtdSouthampton University HospitalSouthamptonUK
| | - Tim Harrison
- Nottingham NIHR Biomedical Research CentreUniversity of NottinghamNottingham City HospitalNottinghamUK
| |
Collapse
|
19
|
Shrivastava G, Valenzuela Leon PC, Calvo E. Inflammasome Fuels Dengue Severity. Front Cell Infect Microbiol 2020; 10:489. [PMID: 33014899 PMCID: PMC7511630 DOI: 10.3389/fcimb.2020.00489] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/06/2020] [Indexed: 01/10/2023] Open
Abstract
Dengue is an acute febrile disease triggered by dengue virus. Dengue is the widespread and rapidly transmitted mosquito-borne viral disease of humans. Diverse symptoms and diseases due to Dengue virus (DENV) infection ranges from dengue fever, dengue hemorrhagic fever (life-threatening) and dengue shock syndrome characterized by shock, endothelial dysfunction and vascular leakage. Several studies have linked the severity of dengue with the induction of inflammasome. DENV activates the NLRP3-specific inflammasome in DENV infected human patients, mice; specifically, mouse bone marrow derived macrophages (BMDMs), dendritic cells, endothelial cells, human peripheral blood mononuclear cells (PBMCs), keratinocytes, monocyte-differentiated macrophages (THP-1), and platelets. Dengue virus mediated inflammasome initiates the maturation of IL-1β and IL-18, which are critical for dengue pathology and inflammatory response. Several studies have reported the molecular mechanism through which (host and viral factors) dengue induces inflammasome, unravels the possible mechanisms of DENV pathogenesis and sets up the stage for the advancement of DENV therapeutics. In this perspective article, we discuss the potential implications and our understanding of inflammasome mechanisms of dengue virus and highlight research areas that have potential to inhibit the pathogenesis of viral diseases, specifically for dengue.
Collapse
Affiliation(s)
- Gaurav Shrivastava
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Paola Carolina Valenzuela Leon
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Eric Calvo
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| |
Collapse
|
20
|
Frank K, Paust S. Dynamic Natural Killer Cell and T Cell Responses to Influenza Infection. Front Cell Infect Microbiol 2020; 10:425. [PMID: 32974217 PMCID: PMC7461885 DOI: 10.3389/fcimb.2020.00425] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/10/2020] [Indexed: 12/12/2022] Open
Abstract
Influenza viruses have perplexed scientists for over a hundred years. Yearly vaccines limit their spread, but they do not prevent all infections. Therapeutic treatments for those experiencing severe infection are limited; further advances are held back by insufficient understanding of the fundamental immune mechanisms responsible for immunopathology. NK cells and T cells are essential in host responses to influenza infection. They produce immunomodulatory cytokines and mediate the cytotoxic response to infection. An imbalance in NK and T cell responses can lead to two outcomes: excessive inflammation and tissue damage or insufficient anti-viral functions and uncontrolled infection. The main cause of death in influenza patients is the former, mediated by hyperinflammatory responses termed “cytokine storm.” NK cells and T cells contribute to cytokine storm, but they are also required for viral clearance. Many studies have attempted to distinguish protective and pathogenic components of the NK cell and T cell influenza response, but it has become clear that they are dynamic and integrated processes. This review will analyze how NK cell and T cell effector functions during influenza infection affect the host response and correlate with morbidity and mortality outcomes.
Collapse
Affiliation(s)
- Kayla Frank
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States.,The Skaggs Graduate Program in Chemical and Biological Sciences, The Scripps Research Institute, La Jolla, CA, United States
| | - Silke Paust
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States.,The Skaggs Graduate Program in Chemical and Biological Sciences, The Scripps Research Institute, La Jolla, CA, United States
| |
Collapse
|
21
|
Johnson BS, Laloraya M. A cytokine super cyclone in COVID-19 patients with risk factors: the therapeutic potential of BCG immunization. Cytokine Growth Factor Rev 2020; 54:32-42. [PMID: 32747157 PMCID: PMC7328575 DOI: 10.1016/j.cytogfr.2020.06.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 12/17/2022]
Abstract
The seventh human coronavirus SARS-CoV2 belongs to the cluster of extremely pathogenic coronaviruses including SARS-CoV and MERS-CoV, which can cause fatal lower respiratory tract infection. Likewise, SARS-CoV2 infection can be fatal as the disease advances to pneumonia, followed by acute respiratory distress syndrome (ARDS). The development of lethal clinical symptons is associated with an exaggerated production of inflammatory cytokines, referred to as the cytokine storm, is a consequence of a hyperactivated immune response aginst the infection. In this article, we discuss the pathogenic consequences of the cytokine storm and its relationship with COVID-19 associated risk factors. The increased pro-inflammatory immune status in patients with risk factors (diabetes, hypertension, cardiovascular disease, COPD) exacerbates the Cytokine-storm of COVID-19 into a 'Cytokine Super Cyclone'. We also evaluate the antiviral immune responses provided by BCG vaccination and the potential role of 'trained immunity' in early protection against SARS-CoV2.
Collapse
Affiliation(s)
- Betcy Susan Johnson
- Female Reproduction and Metabolic Syndromes Laboratory, Division of Molecular Reproduction, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695 014, Kerala, India; Research Centre Kerala University, Senate House Campus, Palayam, Thiruvananthapuram, India
| | - Malini Laloraya
- Female Reproduction and Metabolic Syndromes Laboratory, Division of Molecular Reproduction, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695 014, Kerala, India.
| |
Collapse
|
22
|
Jung HE, Lee HK. Host Protective Immune Responses against Influenza A Virus Infection. Viruses 2020; 12:v12050504. [PMID: 32375274 PMCID: PMC7291249 DOI: 10.3390/v12050504] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 12/31/2022] Open
Abstract
Influenza viruses cause infectious respiratory disease characterized by fever, myalgia, and congestion, ranging in severity from mild to life-threating. Although enormous efforts have aimed to prevent and treat influenza infections, seasonal and pandemic influenza outbreaks remain a major public health concern. This is largely because influenza viruses rapidly undergo genetic mutations that restrict the long-lasting efficacy of vaccine-induced immune responses and therapeutic regimens. In this review, we discuss the virological features of influenza A viruses and provide an overview of current knowledge of the innate sensing of invading influenza viruses and the protective immune responses in the host.
Collapse
Affiliation(s)
- Hi Eun Jung
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Correspondence: (H.E.J.); (H.K.L.); Tel.: +82-42-350-4281 (H.K.L.)
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- KAIST Institute for Health Science and Technology, KAIST, Daejeon 34141, Korea
- Correspondence: (H.E.J.); (H.K.L.); Tel.: +82-42-350-4281 (H.K.L.)
| |
Collapse
|
23
|
Laghlali G, Lawlor KE, Tate MD. Die Another Way: Interplay between Influenza A Virus, Inflammation and Cell Death. Viruses 2020; 12:v12040401. [PMID: 32260457 PMCID: PMC7232208 DOI: 10.3390/v12040401] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 02/08/2023] Open
Abstract
Influenza A virus (IAV) is a major concern to human health due to the ongoing global threat of a pandemic. Inflammatory and cell death signalling pathways play important roles in host defence against IAV infection. However, severe IAV infections in humans are characterised by excessive inflammation and tissue damage, often leading to fatal disease. While the molecular mechanisms involved in the induction of inflammation during IAV infection have been well studied, the pathways involved in IAV-induced cell death and their impact on immunopathology have not been fully elucidated. There is increasing evidence of significant crosstalk between cell death and inflammatory pathways and a greater understanding of their role in host defence and disease may facilitate the design of new treatments for IAV infection.
Collapse
Affiliation(s)
- Gabriel Laghlali
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (G.L.); (K.E.L.)
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC 3168, Australia
- Master de Biologie, École Normale Supérieure de Lyon, Université Claude Bernard Lyon I, Université de Lyon, 69007 Lyon, France
| | - Kate E. Lawlor
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (G.L.); (K.E.L.)
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC 3168, Australia
| | - Michelle D. Tate
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; (G.L.); (K.E.L.)
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC 3168, Australia
- Correspondence: ; Tel.: +61-85722742
| |
Collapse
|
24
|
Wei W, Du H, Shao C, Zhou H, Lu Y, Yu L, Wan H, He Y. Screening of Antiviral Components of Ma Huang Tang and Investigation on the Ephedra Alkaloids Efficacy on Influenza Virus Type A. Front Pharmacol 2019; 10:961. [PMID: 31551774 PMCID: PMC6747051 DOI: 10.3389/fphar.2019.00961] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/29/2019] [Indexed: 12/24/2022] Open
Abstract
Although Ma Huang Tang (MHT) has long been considered as a classical formula for respiratory infections like influenza, bronchitis and asthma, its chemical ingredients that really exert the main efficacy are still obscure. In this study we aimed to screen its antiviral components and investigate the potential mechanisms. The MDCK cellular research results showed that, among nine predominant ingredients of MHT, L-methylephedrin (LMEP), L-ephedrine (LEP) and D-pseudo- ephedrine (DPEP) significantly inhibited the proliferation of influenza A virus in vitro, and the inhibitory effect at 24 h after the treatment was more obvious than that at 48 h. They also significantly inhibited the mRNA expression levels of related genes in the TLR3, TLR4 and TLR7 signaling pathways, which were accompanied with the down-regulation of TNF-α level and the up-regulation of IFN-β level in the cell supernatant. Therefore, three Ephedra alkaloids exert an antiviral effect in vitro which may be closely related to the inhibition of viral replication and the modulation of inflammatory response. Animal research further indicated, at the 3rd and 7th days after infection, LEP and DPEP significantly attenuated lung injury, decreased lung index, virus load in the lung and the level of IL-1β in serum, inhibited the mRNA expression levels of TNF-α, TLR3, TLR4, TLR7, MyD88, NF-κB p65 and RIG-1 as well as the protein expression levels of TLR4, TLR7, MyD88 and NF-κB p65 and markedly increased thymus index, the level of IL-10 in serum and the mRNA expression level of IFN-γ. LEP and DPEP have certain protective effects on the influenza virus-infected mice, which may be associated with their abilities of effectively alleviating lung injury, improving the immunologic function of infected mice and adjusting the host's TLRs and RIG-1 pathways. The overall findings demonstrate that, as effective and inexpensive natural substances, Ephedra alkaloids and MHT may have potential utility in clinical management.
Collapse
Affiliation(s)
- Wenyang Wei
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Haixia Du
- College of Basic, Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chongyu Shao
- College of Life Science, Zhejiang Chinese, Medical University, Hangzhou, China
| | - Huifen Zhou
- College of Life Science, Zhejiang Chinese, Medical University, Hangzhou, China
| | - Yiyu Lu
- Institute of Microbiology, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Li Yu
- College of Life Science, Zhejiang Chinese, Medical University, Hangzhou, China
| | - Haitong Wan
- College of Life Science, Zhejiang Chinese, Medical University, Hangzhou, China
| | - Yu He
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| |
Collapse
|
25
|
Trittel S, Vashist N, Ebensen T, Chambers BJ, Guzmán CA, Riese P. Invariant NKT Cell-Mediated Modulation of ILC1s as a Tool for Mucosal Immune Intervention. Front Immunol 2019; 10:1849. [PMID: 31440243 PMCID: PMC6692890 DOI: 10.3389/fimmu.2019.01849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 07/23/2019] [Indexed: 11/18/2022] Open
Abstract
Non-NK group 1 innate lymphoid cells (ILC1s), mainly investigated in the mucosal areas of the intestine, are well-known to contribute to anti-parasitic and anti-bacterial immune responses. Recently, our group revealed that lung ILC1s become activated during murine influenza infection, thereby contributing to viral clearance. In this context, worldwide seasonal influenza infections often result in severe disease outbreaks leading to high morbidity and mortality. Therefore, new immune interventions are urgently needed. In contrast to NK cells, the potential of non-NK ILC1s to become functionally tailored by immune modulators to contribute to the combat against mucosal-transmitted viral pathogens has not yet been addressed. The present study aimed at assessing the potential of ILC1s to become modulated by iNKT cells activated through the CD1d agonist αGalCerMPEG. Our results demonstrate an improved functional responsiveness of murine lung and splenic ILC1s following iNKT cell stimulation by the mucosal route, as demonstrated by enhanced surface expression of TNF-related apoptosis-inducing ligand (TRAIL), CD49a and CD28, and increased secretion of IFNγ. Interestingly, iNKT cell stimulation also induced the expression of the immune checkpoint molecules GITR and CTLA-4, which represent crucial points of action for immune regulation. An in vivo influenza infection model revealed that intranasal activation of ILC1s by αGalCerMPEG contributed to increased viral clearance as shown by reduced viral loads in the lungs. The findings that ILC1s can become modulated by mucosally activated iNKT cells in a beneficial manner emphasize their up to now underestimated potential and renders them to be considered as targets for novel immune interventions.
Collapse
Affiliation(s)
- Stephanie Trittel
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Neha Vashist
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Department of Medicine, Center for Infectious Medicine, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Thomas Ebensen
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Benedict J Chambers
- Department of Medicine, Center for Infectious Medicine, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Carlos A Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Peggy Riese
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| |
Collapse
|
26
|
Krishnakumar V, Durairajan SSK, Alagarasu K, Li M, Dash AP. Recent Updates on Mouse Models for Human Immunodeficiency, Influenza, and Dengue Viral Infections. Viruses 2019; 11:v11030252. [PMID: 30871179 PMCID: PMC6466164 DOI: 10.3390/v11030252] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/09/2019] [Accepted: 02/19/2019] [Indexed: 12/14/2022] Open
Abstract
Well-developed mouse models are important for understanding the pathogenesis and progression of immunological response to viral infections in humans. Moreover, to test vaccines, anti-viral drugs and therapeutic agents, mouse models are fundamental for preclinical investigations. Human viruses, however, seldom infect mice due to differences in the cellular receptors used by the viruses for entry, as well as in the innate immune responses in mice and humans. In other words, a species barrier exists when using mouse models for investigating human viral infections. Developing transgenic (Tg) mice models expressing the human genes coding for viral entry receptors and knock-out (KO) mice models devoid of components involved in the innate immune response have, to some extent, overcome this barrier. Humanized mouse models are a third approach, developed by engrafting functional human cells and tissues into immunodeficient mice. They are becoming indispensable for analyzing human viral diseases since they nearly recapitulate the human disease. These mouse models also serve to test the efficacy of vaccines and antiviral agents. This review provides an update on the Tg, KO, and humanized mouse models that are used in studies investigating the pathogenesis of three important human-specific viruses, namely human immunodeficiency (HIV) virus 1, influenza, and dengue.
Collapse
Affiliation(s)
- Vinodhini Krishnakumar
- Department of Microbiology, School of Life Sciences, Central University of Tamilnadu, Tiruvarur 610 005, India.
| | | | - Kalichamy Alagarasu
- Dengue/Chikungunya Group, ICMR-National Institute of Virology, Pune 411001, India.
| | - Min Li
- Neuroscience Research Laboratory, Mr. & Mrs. Ko Chi-Ming Centre for Parkinson's Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong, HKSAR, China.
| | | |
Collapse
|
27
|
Abstract
Initially described as an interferon (IFN)γ‐inducing factor, interleukin (IL)‐18 is indeed involved in Th1 and NK cell activation, but also in Th2, IL‐17‐producing γδ T cells and macrophage activation. IL‐18, a member of the IL‐1 family, is similar to IL‐1β for being processed by caspase 1 to an 18 kDa‐biologically active mature form. IL‐18 binds to its specific receptor (IL‐18Rα, also known as IL‐1R7) forming a low affinity ligand chain. This is followed by recruitment of the IL‐18Rβ chain. IL‐18 then uses the same signaling pathway as IL‐1 to activate NF‐kB and induce inflammatory mediators such as adhesion molecules, chemokines and Fas ligand. IL‐18 also binds to the circulating high affinity IL‐18 binding protein (BP), such as only unbound free IL‐18 is active. IL‐18Rα may also bind IL‐37, another member of the IL‐1 family, but in association with the negative signaling chain termed IL‐1R8, which transduces an anti‐inflammatory signal. IL‐18BP also binds IL‐37 and this acts as a sink for the anti‐inflammatory properties of IL‐37. There is now ample evidence for a role of IL‐18 in various infectious, metabolic or inflammatory diseases such as influenza virus infection, atheroma, myocardial infarction, chronic obstructive pulmonary disease, or Crohn's disease. However, IL‐18 plays a very specific role in the pathogenesis of hemophagocytic syndromes (HS) also termed Macrophage Activation Syndrome. In children affected by NLRC4 gain‐of‐function mutations, IL‐18 circulates in the range of tens of nanograms/mL. HS is treated with the IL‐1 Receptor antagonist (anakinra) but also specifically with IL‐18BP. Systemic juvenile idiopathic arthritis or adult‐onset Still's disease are also characterized by high serum IL‐18 concentrations and are treated by IL‐18BP.
Collapse
Affiliation(s)
- Gilles Kaplanski
- Assistance Publique-Hôpitaux de Marseille, Centre Hospitalier Universitaire Conception, Service de Médecine Interne et Immunologie Clinique, Aix-Marseille Université, Marseille, France.,Vascular Research Center Marseille, Faculté de Pharmacie, Aix-Marseille Université, INSERM UMR_S1076, Marseille, France
| |
Collapse
|
28
|
Vashist N, Trittel S, Ebensen T, Chambers BJ, Guzmán CA, Riese P. Influenza-Activated ILC1s Contribute to Antiviral Immunity Partially Influenced by Differential GITR Expression. Front Immunol 2018; 9:505. [PMID: 29623077 PMCID: PMC5874297 DOI: 10.3389/fimmu.2018.00505] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 02/26/2018] [Indexed: 01/07/2023] Open
Abstract
Innate lymphoid cells (ILCs) represent diversified subsets of effector cells as well as immune regulators of mucosal immunity and are classified into group 1 ILCs, group 2 ILCs, and group 3 ILCs. Group 1 ILCs encompass natural killer (NK) cells and non-NK ILCs (ILC1s) and mediate their functionality via the rapid production of IFN-γ and TNF-α. The current knowledge of ILC1s mainly associates them to inflammatory processes. Much less is known about their regulation during infection and their capacity to interact with cells of the adaptive immune system. The present study dissected the role of ILC1s during early influenza A virus infection, thereby revealing their impact on the antiviral response. Exploiting in vitro and in vivo H1N1 infection systems, a cross-talk of ILC1s with cells of the innate and the adaptive immunity was demonstrated, which contributes to anti-influenza immunity. A novel association of ILC1 functionality and the expression of the glucocorticoid-induced TNFR-related protein (GITR) was observed, which hints toward a so far undescribed role of GITR in regulating ILC1 responsiveness. Overexpression of GITR inhibits IFN-γ production by ILC1s, whereas partial reduction of GITR expression can reverse this effect, thereby regulating ILC1 functionality. These new insights into ILC1 biology define potential intervention targets to modulate the functional properties of ILC1s, thus contributing toward the development of new immune interventions against influenza.
Collapse
Affiliation(s)
- Neha Vashist
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Department of Medicine, Center for Infectious Medicine, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Stephanie Trittel
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Thomas Ebensen
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Benedict J Chambers
- Department of Medicine, Center for Infectious Medicine, Karolinska Institute, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Carlos A Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Peggy Riese
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| |
Collapse
|
29
|
Stegemann-Koniszewski S, Behrens S, Boehme JD, Hochnadel I, Riese P, Guzmán CA, Kröger A, Schreiber J, Gunzer M, Bruder D. Respiratory Influenza A Virus Infection Triggers Local and Systemic Natural Killer Cell Activation via Toll-Like Receptor 7. Front Immunol 2018; 9:245. [PMID: 29497422 PMCID: PMC5819576 DOI: 10.3389/fimmu.2018.00245] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/29/2018] [Indexed: 12/17/2022] Open
Abstract
The innate immune system senses influenza A virus (IAV) through different pathogen-recognition receptors including Toll-like receptor 7 (TLR7). Downstream of viral recognition natural killer (NK) cells are activated as part of the anti-IAV immune response. Despite the known decisive role of TLR7 for NK cell activation by therapeutic immunostimulatory RNAs, the contribution of TLR7 to the NK cell response following IAV infection has not been addressed. We have analyzed lung cytokine responses as well as the activation, interferon (IFN)-γ production, and cytotoxicity of lung and splenic NK cells following sublethal respiratory IAV infection in wild-type and TLR7ko mice. Early airway IFN-γ levels as well as the induction of lung NK cell CD69 expression and IFN-γ production in response to IAV infection were significantly attenuated in TLR7-deficient hosts. Strikingly, respiratory IAV infection also primed splenic NK cells for IFN-γ production, degranulation, and target cell lysis, all of which were fully dependent on TLR7. At the same time, lung type I IFN levels were significantly reduced in TLR7ko mice early following IAV infection, displaying a potential upstream mechanism of the attenuated NK cell activation observed. Taken together, our data clearly demonstrate a specific role for TLR7 signaling in local and systemic NK cell activation following respiratory IAV infection despite the presence of redundant innate IAV-recognition pathways.
Collapse
Affiliation(s)
- Sabine Stegemann-Koniszewski
- Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Infection Immunology, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto von-Guericke University, Magdeburg, Germany.,Experimental Pneumology, University Hospital of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Sarah Behrens
- Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Julia D Boehme
- Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Infection Immunology, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto von-Guericke University, Magdeburg, Germany
| | - Inga Hochnadel
- Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Peggy Riese
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Carlos A Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Andrea Kröger
- Molecular Microbiology, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.,Innate Immunity and Infection, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Jens Schreiber
- Experimental Pneumology, University Hospital of Pneumology, University Hospital Magdeburg, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University, Magdeburg, Germany
| | - Matthias Gunzer
- Institute for Experimental Immunology and Imaging, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Dunja Bruder
- Immune Regulation, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Infection Immunology, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto von-Guericke University, Magdeburg, Germany
| |
Collapse
|
30
|
Cordero MD, Alcocer-Gómez E. Inflammasome in the Pathogenesis of Pulmonary Diseases. EXPERIENTIA SUPPLEMENTUM (2012) 2018; 108:111-151. [PMID: 30536170 PMCID: PMC7123416 DOI: 10.1007/978-3-319-89390-7_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Lung diseases are common and significant causes of illness and death around the world. Inflammasomes have emerged as an important regulator of lung diseases. The important role of IL-1 beta and IL-18 in the inflammatory response of many lung diseases has been elucidated. The cleavage to turn IL-1 beta and IL-18 from their precursors into the active forms is tightly regulated by inflammasomes. In this chapter, we structurally review current evidence of inflammasome-related components in the pathogenesis of acute and chronic lung diseases, focusing on the "inflammasome-caspase-1-IL-1 beta/IL-18" axis.
Collapse
Affiliation(s)
- Mario D. Cordero
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - Elísabet Alcocer-Gómez
- Departamento de Psicología Experimental, Facultad de Psicología, Universidad de Sevilla, Seville, Spain
| |
Collapse
|
31
|
Contribution of innate immune cells to pathogenesis of severe influenza virus infection. Clin Sci (Lond) 2017; 131:269-283. [PMID: 28108632 DOI: 10.1042/cs20160484] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/19/2016] [Accepted: 11/25/2016] [Indexed: 12/12/2022]
Abstract
Influenza A viruses (IAVs) cause respiratory illness of varying severity based on the virus strains, host predisposition and pre-existing immunity. Ultimately, outcome and recovery from infection rely on an effective immune response comprising both innate and adaptive components. The innate immune response provides the first line of defence and is crucial to the outcome of infection. Airway epithelial cells are the first cell type to encounter the virus in the lungs, providing antiviral and chemotactic molecules that shape the ensuing immune response by rapidly recruiting innate effector cells such as NK cells, monocytes and neutrophils. Each cell type has unique mechanisms to combat virus-infected cells and limit viral replication, however their actions may also lead to pathology. This review focuses how innate cells contribute to protection and pathology, and provides evidence for their involvement in immune pathology in IAV infections.
Collapse
|
32
|
Guo XZJ, Thomas PG. New fronts emerge in the influenza cytokine storm. Semin Immunopathol 2017; 39:541-550. [PMID: 28555383 PMCID: PMC5580809 DOI: 10.1007/s00281-017-0636-y] [Citation(s) in RCA: 188] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 04/23/2017] [Indexed: 12/17/2022]
Abstract
Influenza virus is a significant pathogen in humans and animals with the ability to cause extensive morbidity and mortality. Exuberant immune responses induced following infection have been described as a "cytokine storm," associated with excessive levels of proinflammatory cytokines and widespread tissue damage. Recent studies have painted a more complex picture of cytokine networks and their contributions to clinical outcomes. While many cytokines clearly inflict immunopathology, others have non-pathological delimited roles in sending alarm signals, facilitating viral clearance, and promoting tissue repair, such as the IL-33-amphiregulin axis, which plays a key role in resolving some types of lung damage. Recent literature suggests that type 2 cytokines, traditionally thought of as not involved in anti-influenza immunity, may play an important regulatory role. Here, we discuss the diverse roles played by cytokines after influenza infection and highlight new, serene features of the cytokine storm, while highlighting the specific functions of relevant cytokines that perform unique immune functions and may have applications for influenza therapy.
Collapse
Affiliation(s)
- Xi-Zhi J Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Integrated Biomedical Sciences Program, Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Paul G Thomas
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
- Integrated Biomedical Sciences Program, Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
| |
Collapse
|
33
|
Li T, Wang J, Wang Y, Chen Y, Wei H, Sun R, Tian Z. Respiratory Influenza Virus Infection Induces Memory-like Liver NK Cells in Mice. THE JOURNAL OF IMMUNOLOGY 2016; 198:1242-1252. [PMID: 28031334 DOI: 10.4049/jimmunol.1502186] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 11/22/2016] [Indexed: 12/18/2022]
Abstract
Although NK cells are classified as innate immune cells, recent studies have demonstrated the transformation of NK cells into long-lived memory cells that contribute to secondary immune responses in certain mouse models. However, whether NK cells mount an Ag-specific memory response to acute influenza virus infection has not yet been examined. Here, we show that, consistent with previous studies, lung NK cells play an important role in controlling viral proliferation after primary influenza virus infection. However, although lung NK cells display a memory phenotype at the late stage of infection, these cells do not protect mice against secondary influenza virus infection. Interestingly, liver NK cells from influenza virus-infected mice possess a memory phenotype and protect mice against secondary influenza virus infection. Memory-like liver NK cells display a CD49a+DX5- phenotype, and the adoptive transfer of purified liver CD49a+DX5- NK cells into naive mice followed by viral infection results in protective immunity and decreased viral titer. Moreover, we demonstrate that primary inactivated influenza virus induces memory NK cells residing in the liver of Rag1-/- mice. Collectively, these data suggest that liver CD49a+DX5- NK cells remember encountered Ag from influenza virus after primary infection and are more protective upon subsequent infection.
Collapse
Affiliation(s)
- Tingting Li
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and
| | - Jian Wang
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and
| | - Yanshi Wang
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and
| | - Yongyan Chen
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and
| | - Haiming Wei
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and
| | - Rui Sun
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Zhigang Tian
- The Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027, China; and .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
| |
Collapse
|
34
|
Arnold N, Girke T, Sureshchandra S, Nguyen C, Rais M, Messaoudi I. Genomic and functional analysis of the host response to acute simian varicella infection in the lung. Sci Rep 2016; 6:34164. [PMID: 27677639 PMCID: PMC5039758 DOI: 10.1038/srep34164] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 09/08/2016] [Indexed: 01/19/2023] Open
Abstract
Varicella Zoster Virus (VZV) is the causative agent of varicella and herpes zoster. Although it is well established that VZV is transmitted via the respiratory route, the host-pathogen interactions during acute VZV infection in the lungs remain poorly understood due to limited access to clinical samples. To address these gaps in our knowledge, we leveraged a nonhuman primate model of VZV infection where rhesus macaques are intrabronchially challenged with the closely related Simian Varicella Virus (SVV). Acute infection is characterized by immune infiltration of the lung airways, a significant up-regulation of genes involved in antiviral-immunity, and a down-regulation of genes involved in lung development. This is followed by a decrease in viral loads and increased expression of genes associated with cell cycle and tissue repair. These data provide the first characterization of the host response required to control varicella virus replication in the lung and provide insight into mechanisms by which VZV infection can cause lung injury in an immune competent host.
Collapse
Affiliation(s)
- Nicole Arnold
- Graduate Program in Microbiology, University of California-Riverside, CA, USA
| | - Thomas Girke
- Department of Botany and Plant Sciences, University of California-Riverside, CA, USA
| | - Suhas Sureshchandra
- Graduate Program in Genetics, Genomics and Bioinformatics, University of California-Riverside, CA, USA
| | - Christina Nguyen
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA, USA
| | - Maham Rais
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA, USA
| | - Ilhem Messaoudi
- Graduate Program in Microbiology, University of California-Riverside, CA, USA
- Graduate Program in Genetics, Genomics and Bioinformatics, University of California-Riverside, CA, USA
- Division of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, CA, USA
| |
Collapse
|
35
|
Reassessing the role of the NLRP3 inflammasome during pathogenic influenza A virus infection via temporal inhibition. Sci Rep 2016; 6:27912. [PMID: 27283237 PMCID: PMC4901306 DOI: 10.1038/srep27912] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/26/2016] [Indexed: 01/03/2023] Open
Abstract
The inflammasome NLRP3 is activated by pathogen associated molecular patterns (PAMPs) during infection, including RNA and proteins from influenza A virus (IAV). However, chronic activation by danger associated molecular patterns (DAMPs) can be deleterious to the host. We show that blocking NLRP3 activation can be either protective or detrimental at different stages of lethal influenza A virus (IAV). Administration of the specific NLRP3 inhibitor MCC950 to mice from one day following IAV challenge resulted in hypersusceptibility to lethality. In contrast, delaying treatment with MCC950 until the height of disease (a more likely clinical scenario) significantly protected mice from severe and highly virulent IAV-induced disease. These findings identify for the first time that NLRP3 plays a detrimental role later in infection, contributing to IAV pathogenesis through increased cytokine production and lung cellular infiltrates. These studies also provide the first evidence identifying NLRP3 inhibition as a novel therapeutic target to reduce IAV disease severity.
Collapse
|
36
|
Kawahara T, Takahashi T, Oishi K, Tanaka H, Masuda M, Takahashi S, Takano M, Kawakami T, Fukushima K, Kanazawa H, Suzuki T. Consecutive oral administration of Bifidobacterium longum MM-2 improves the defense system against influenza virus infection by enhancing natural killer cell activity in a murine model. Microbiol Immunol 2015; 59:1-12. [PMID: 25400245 DOI: 10.1111/1348-0421.12210] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/24/2014] [Accepted: 10/30/2014] [Indexed: 12/24/2022]
Abstract
Bifidobacterium, one of the major components of intestinal microflora, shows anti-influenza virus (IFV) potential as a probiotic, partly through enhancement of innate immunity by modulation of the intestinal immune system. Bifidobacterium longum MM-2 (MM-2), a very safe bacterium in humans, was isolated from healthy humans and its protective effect against IFV infection in a murine model shown. In mice that were intranasally inoculated with IFV, oral administration of MM-2 for 17 consecutive days improved clinical symptoms, reduced mortality, suppressed inflammation in the lower respiratory tract, and decreased virus titers, cell death, and pro-inflammatory cytokines such as IL-6 and TNF-α in bronchoalveolar lavage fluid. The anti-IFV mechanism of MM-2 involves innate immunity through significant increases in NK cell activities in the lungs and spleen and a significant increase in pulmonary gene expression of NK cell activators such as IFN-γ, IL-2, IL-12 and IL-18. Even in non-infected mice, MM-2 administration also induced significant enhancement of both IFN-γ production by Peyer's patch cells (PPs) and splenetic NK cell activity. Oral administration of MM-2 for 17 days activates systemic immunoreactivity in PPs, which contributes to innate immunity, including NK cell activation, resulting in an anti-IFV effect. MM-2 as a probiotic may function as a prophylactic agent in the management of an IFV epidemic.
Collapse
Affiliation(s)
- Tomohiro Kawahara
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan; Biofermin Kobe Research Institute, Biofermin Pharmaceutical, 7-3-4 Ibukidai-Higashimachi, Nishi-ku, Kobe, 651-2242, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Guo S, Yang C, Diao B, Huang X, Jin M, Chen L, Yan W, Ning Q, Zheng L, Wu Y, Chen Y. The NLRP3 Inflammasome and IL-1β Accelerate Immunologically Mediated Pathology in Experimental Viral Fulminant Hepatitis. PLoS Pathog 2015; 11:e1005155. [PMID: 26367131 PMCID: PMC4569300 DOI: 10.1371/journal.ppat.1005155] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 08/18/2015] [Indexed: 02/06/2023] Open
Abstract
Viral fulminant hepatitis (FH) is a severe disease with high mortality resulting from excessive inflammation in the infected liver. Clinical interventions have been inefficient due to the lack of knowledge for inflammatory pathogenesis in the virus-infected liver. We show that wild-type mice infected with murine hepatitis virus strain-3 (MHV-3), a model for viral FH, manifest with severe disease and high mortality in association with a significant elevation in IL-1β expression in the serum and liver. Whereas, the viral infection in IL-1β receptor-I deficient (IL-1R1-/-) or IL-1R antagonist (IL-1Ra) treated mice, show reductions in virus replication, disease progress and mortality. IL-1R1 deficiency appears to debilitate the virus-induced fibrinogen-like protein-2 (FGL2) production in macrophages and CD45+Gr-1high neutrophil infiltration in the liver. The quick release of reactive oxygen species (ROS) by the infected macrophages suggests a plausible viral initiation of NLRP3 inflammasome activation. Further experiments show that mice deficient of p47phox, a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunit that controls acute ROS production, present with reductions in NLRP3 inflammasome activation and subsequent IL-1β secretion during viral infection, which appears to be responsible for acquiring resilience to viral FH. Moreover, viral infected animals in deficiencies of NLRP3 and Caspase-1, two essential components of the inflammasome complex, also have reduced IL-1β induction along with ameliorated hepatitis. Our results demonstrate that the ROS/NLRP3/IL-1β axis institutes an essential signaling pathway, which is over activated and directly causes the severe liver disease during viral infection, which sheds light on development of efficient treatments for human viral FH and other severe inflammatory diseases. The NLRP3 inflammasome and IL-1β play essential roles in mediating the primary inflammatory responses against pathogen invasions in the host. Hyperactivation of this signaling pathway can lead to life-threatening diseases under certain circumstances. However, it is not clear if NLRP3 inflammasome activation participates in the pathogenesis of viral fulminant hepatitis (FH), a clinical severe syndrome characterized by acute inflammation in the liver along with massive necrosis of hepatocytes and hepatic encephalopathy during viral infection. Using a mouse viral FH model by infection with murine hepatitis virus strain-3 (MHV-3), we observed a significant macrophage induction and the serum and liver massive accumulation of IL-1β. Conversely, interruption of IL-1β signals results in attenuation of the MHV-3-induced hepatitis and mortality. Blocking IL-1β activity reduces the virus-induced expression of fibrinogen-like protein-2 (FGL2) in macrophages, and limits the liver recruitment of CD45+Gr-1high neutrophils upon the virus infection. We further show that proIL-1β is bioprocessed by NLRP3 inflammasome. Deletion of the components in the inflammasome complex, including NLRP3 and Caspase-1, leads to reduction in the virus-induced IL-1β production and lessening of disease progression. Further studies show that macrophages in deficiency of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunit p47phox, a protein that controls acute ROS production, prevents NLRP3 inflammasome activation and IL-1β secretion, suggesting that the virus-induced ROS production can directly initiate NLRP3 inflammasome activation. Therefore, p47phox-/- mice exhibited certain degrees of MHV-3 resistance. Taken together, these results demonstrate that ROS/NLRP3/IL-1β is the key pathway signaling exacerbated inflammatory responses that cause viral FH in mice, suggesting that mediation of this signal cascade may benefit on the disease treatment.
Collapse
Affiliation(s)
- Sheng Guo
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Chengying Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Bo Diao
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Xiaoyong Huang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Meihua Jin
- Department of Pharmacology, Yanbian University, Yanji, Jilin province, China
| | - Lili Chen
- Department of Basic Medicine, Yanbian University, Yanji, Jilin province, China
| | - Weiming Yan
- Department and Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qin Ning
- Department and Institute of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lixin Zheng
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Yuzhang Wu
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Yongwen Chen
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| |
Collapse
|
38
|
Cao W, Mishina M, Ranjan P, De La Cruz JA, Kim JH, Garten R, Kumar A, García-Sastre A, Katz JM, Gangappa S, Sambhara S. A Newly Emerged Swine-Origin Influenza A(H3N2) Variant Dampens Host Antiviral Immunity but Induces Potent Inflammasome Activation. J Infect Dis 2015; 212:1923-9. [PMID: 26068782 DOI: 10.1093/infdis/jiv330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 06/02/2015] [Indexed: 11/13/2022] Open
Abstract
We compared the innate immune response to a newly emerged swine-origin influenza A(H3N2) variant containing the M gene from 2009 pandemic influenza A(H1N1), termed "A(H3N2)vpM," to the immune responses to the 2010 swine-origin influenza A(H3N2) variant and seasonal influenza A(H3N2). Our results demonstrated that A(H3N2)vpM-induced myeloid dendritic cells secreted significantly lower levels of type I interferon (IFN) but produced significantly higher levels of proinflammatory cytokines and induced potent inflammasome activation. The reduction in antiviral immunity with increased inflammatory responses upon A(H3N2)vpM infection suggest that these viruses have the potential for increased disease severity in susceptible hosts.
Collapse
Affiliation(s)
| | | | | | | | | | - Rebecca Garten
- Virology, Surveillance, and Diagnosis Branch, Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Adolfo García-Sastre
- Department of Microbiology Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | | | | |
Collapse
|
39
|
Yong CY, Yeap SK, Ho KL, Omar AR, Tan WS. Potential recombinant vaccine against influenza A virus based on M2e displayed on nodaviral capsid nanoparticles. Int J Nanomedicine 2015; 10:2751-63. [PMID: 25897220 PMCID: PMC4396508 DOI: 10.2147/ijn.s77405] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Influenza A virus poses a major threat to human health, causing outbreaks from time to time. Currently available vaccines employ inactivated viruses of different strains to provide protection against influenza virus infection. However, high mutation rates of influenza virus hemagglutinin (H) and neuraminidase (N) glycoproteins give rise to vaccine escape mutants. Thus, an effective vaccine providing protection against all strains of influenza virus would be a valuable asset. The ectodomain of matrix 2 protein (M2e) was found to be highly conserved despite mutations of the H and N glycoproteins. Hence, one to five copies of M2e were fused to the carboxyl-terminal end of the recombinant nodavirus capsid protein derived from Macrobrachium rosenbergii. The chimeric proteins harboring up to five copies of M2e formed nanosized virus-like particles approximately 30 nm in diameter, which could be purified easily by immobilized metal affinity chromatography. BALB/c mice immunized subcutaneously with these chimeric proteins developed antibodies specifically against M2e, and the titer was proportional to the copy numbers of M2e displayed on the nodavirus capsid nanoparticles. The fusion proteins also induced a type 1 T helper immune response. Collectively, M2e displayed on the nodavirus capsid nanoparticles could provide an alternative solution to a possible influenza pandemic in the future.
Collapse
Affiliation(s)
- Chean Yeah Yong
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Swee Keong Yeap
- Institute of Bioscience, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Kok Lian Ho
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Abdul Rahman Omar
- Institute of Bioscience, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia ; Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
| | - Wen Siang Tan
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor, Malaysia ; Institute of Bioscience, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| |
Collapse
|
40
|
Jackson DJ, Glanville N, Trujillo-Torralbo MB, Shamji BWH, del-Rosario J, Mallia P, Edwards MJ, Walton RP, Edwards MR, Johnston SL. Interleukin-18 Is Associated With Protection Against Rhinovirus-Induced Colds and Asthma Exacerbations. Clin Infect Dis 2015; 60:1528-31. [DOI: 10.1093/cid/civ062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 01/13/2015] [Indexed: 11/13/2022] Open
|
41
|
Lambrecht BN, Neyt K, van Helden MJ. The Mucosal Immune Response to Respiratory Viruses. Mucosal Immunol 2015. [DOI: 10.1016/b978-0-12-415847-4.00094-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
42
|
Fabbi M, Carbotti G, Ferrini S. Context-dependent role of IL-18 in cancer biology and counter-regulation by IL-18BP. J Leukoc Biol 2014; 97:665-75. [DOI: 10.1189/jlb.5ru0714-360rr] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
|
43
|
Netea MG, van de Veerdonk FL, van der Meer JWM, Dinarello CA, Joosten LAB. Inflammasome-independent regulation of IL-1-family cytokines. Annu Rev Immunol 2014; 33:49-77. [PMID: 25493334 DOI: 10.1146/annurev-immunol-032414-112306] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Induction, production, and release of proinflammatory cytokines are essential steps to establish an effective host defense. Cytokines of the interleukin-1 (IL-1) family induce inflammation and regulate T lymphocyte responses while also displaying homeostatic and metabolic activities. With the exception of the IL-1 receptor antagonist, all IL-1 family cytokines lack a signal peptide and require proteolytic processing into an active molecule. One such unique protease is caspase-1, which is activated by protein platforms called the inflammasomes. However, increasing evidence suggests that inflammasomes and caspase-1 are not the only mechanism for processing IL-1 cytokines. IL-1 cytokines are often released as precursors and require extracellular processing for activity. Here we review the inflammasome-independent enzymatic processes that are able to activate IL-1 cytokines, paying special attention to neutrophil-derived serine proteases, which subsequently induce inflammation and modulate host defense. The inflammasome-independent processing of IL-1 cytokines has important consequences for understanding inflammatory diseases, and it impacts the design of IL-1-based modulatory therapies.
Collapse
|
44
|
Kuchipudi SV, Tellabati M, Sebastian S, Londt BZ, Jansen C, Vervelde L, Brookes SM, Brown IH, Dunham SP, Chang KC. Highly pathogenic avian influenza virus infection in chickens but not ducks is associated with elevated host immune and pro-inflammatory responses. Vet Res 2014; 45:118. [PMID: 25431115 PMCID: PMC4246556 DOI: 10.1186/s13567-014-0118-3] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 10/31/2014] [Indexed: 11/15/2022] Open
Abstract
Highly pathogenic avian influenza (HPAI) H5N1 viruses cause severe infection in chickens at near complete mortality, but corresponding infection in ducks is typically mild or asymptomatic. To understand the underlying molecular differences in host response, primary chicken and duck lung cells, infected with two HPAI H5N1 viruses and a low pathogenicity avian influenza (LPAI) H2N3 virus, were subjected to RNA expression profiling. Chicken cells but not duck cells showed highly elevated immune and pro-inflammatory responses following HPAI virus infection. HPAI H5N1 virus challenge studies in chickens and ducks corroborated the in vitro findings. To try to determine the underlying mechanisms, we investigated the role of signal transducer and activator of transcription-3 (STAT-3) in mediating pro-inflammatory response to HPAIV infection in chicken and duck cells. We found that STAT-3 expression was down-regulated in chickens but was up-regulated or unaffected in ducks in vitro and in vivo following H5N1 virus infection. Low basal STAT-3 expression in chicken cells was completely inhibited by H5N1 virus infection. By contrast, constitutively active STAT-3 detected in duck cells was unaffected by H5N1 virus infection. Transient constitutively-active STAT-3 transfection in chicken cells significantly reduced pro-inflammatory response to H5N1 virus infection; on the other hand, chemical inhibition of STAT-3 activation in duck cells increased pro-inflammatory gene expression following H5N1 virus infection. Collectively, we propose that elevated pro-inflammatory response in chickens is a major pathogenicity factor of HPAI H5N1 virus infection, mediated in part by the inhibition of STAT-3.
Collapse
Affiliation(s)
- Suresh V Kuchipudi
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, College Road, Loughborough, Nottingham LE12 5RD, Leicestershire, UK.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
O'Brien LC, Mezzaroma E, Van Tassell BW, Marchetti C, Carbone S, Abbate A, Toldo S. Interleukin-18 as a therapeutic target in acute myocardial infarction and heart failure. Mol Med 2014; 20:221-9. [PMID: 24804827 DOI: 10.2119/molmed.2014.00034] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 04/28/2014] [Indexed: 12/13/2022] Open
Abstract
Interleukin 18 (IL-18) is a proinflammatory cytokine in the IL-1 family that has been implicated in a number of disease states. In animal models of acute myocardial infarction (AMI), pressure overload, and LPS-induced dysfunction, IL-18 regulates cardiomyocyte hypertrophy and induces cardiac contractile dysfunction and extracellular matrix remodeling. In patients, high IL-18 levels correlate with increased risk of developing cardiovascular disease (CVD) and with a worse prognosis in patients with established CVD. Two strategies have been used to counter the effects of IL-18:IL-18 binding protein (IL-18BP), a naturally occurring protein, and a neutralizing IL-18 antibody. Recombinant human IL-18BP (r-hIL-18BP) has been investigated in animal studies and in phase I/II clinical trials for psoriasis and rheumatoid arthritis. A phase II clinical trial using a humanized monoclonal IL-18 antibody for type 2 diabetes is ongoing. Here we review the literature regarding the role of IL-18 in AMI and heart failure and the evidence and challenges of using IL-18BP and blocking IL-18 antibodies as a therapeutic strategy in patients with heart disease.
Collapse
Affiliation(s)
- Laura C O'Brien
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Eleonora Mezzaroma
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America Pharmacotherapy and Outcome Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Benjamin W Van Tassell
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America Pharmacotherapy and Outcome Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Carlo Marchetti
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Salvatore Carbone
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Antonio Abbate
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, Virginia, United States of America Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| | - Stefano Toldo
- Victoria Johnson Research Laboratories, Virginia Commonwealth University, Richmond, Virginia, United States of America Virginia Commonwealth University Pauley Heart Center, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States of America
| |
Collapse
|
46
|
Keyel PA. How is inflammation initiated? Individual influences of IL-1, IL-18 and HMGB1. Cytokine 2014; 69:136-45. [PMID: 24746243 DOI: 10.1016/j.cyto.2014.03.007] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 02/27/2014] [Accepted: 03/24/2014] [Indexed: 12/17/2022]
Abstract
Pro-inflammatory cytokines are crucial for fighting infection and establishing immunity. Recently, other proteins, such as danger-associated molecular patterns (DAMPs), have also been appreciated for their role in inflammation and immunity. Following the formation and activation of multiprotein complexes, termed inflammasomes, two cytokines, IL-1β and IL-18, along with the DAMP High Mobility Group Box 1 (HMGB1), are released from cells. Although these proteins all lack classical secretion signals and are released by inflammasome activation, they each lead to different downstream consequences. This review examines how various inflammasomes promote the release of IL-1β, IL-18 and HMGB1 to combat pathogenic situations. Each of these effector molecules plays distinct roles during sterile inflammation, responding to viral, bacterial and parasite infection, and tailoring the innate immune response to specific threats.
Collapse
Affiliation(s)
- Peter A Keyel
- Department of Biological Sciences, Texas Tech University, Biology Rm 108, Box 43131, Lubbock, TX 79409-3131, United States.
| |
Collapse
|
47
|
Gene expression analysis in children with complex seizures due to influenza A(H1N1)pdm09 or rotavirus gastroenteritis. J Neurovirol 2014; 20:73-84. [DOI: 10.1007/s13365-013-0231-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/11/2013] [Accepted: 12/26/2013] [Indexed: 10/25/2022]
|
48
|
Abstract
Within days after infection, natural killer (NK) cells are recruited to the lungs and play an essential role in the immune response against influenza infection. Through interactions with the virus itself, as well as viral-infected cells, NK cells secrete a variety of cytokines and can contain viral replication by killing infected cells early after influenza infection. However, the virus has means of evading NK cell responses, including escaping NK cell recognition through mutation of the viral hemagglutinin (HA) protein, regulating HA levels, and by directly infecting and destroying NK cells. Although much of our understanding of NK cell role in influenza infection has come from animal models, there is increasing information from human infection. Studies conducted during the 2009 H1N1 pandemic provided much needed information on the importance of NK cells during human infection and suggest that NK lymphopenia may correlate with increased disease severity. However, more information on how different influenza virus subtypes influence NK cell levels and activities, the role of the different NK cell receptors in infection, and the impact of NK cells on human infection, particularly in high risk populations is needed.
Collapse
|
49
|
Abstract
Human beings are constantly exposed to pathogens. The innate immune system is the first line of defense against microbes. It has evolved to recognize conserved microbial motifs (PAMP or pathogen-associated molecular patterns) thanks to a limited array of receptors termed pattern recognition receptors (PRR). Upon activation, most PRR trigger a transcriptional response leading to neosynthesis of hundreds of genes. In contrast, engagement of various PRR in the recently identified inflammasome complexes lead to activation of a cysteine protease, caspase-1. This inflammatory caspase has a dual activity: it triggers the release of very potent proinflammatory cytokines IL-1β and IL-18 and, an hyperinflammatory cell death termed pyroptosis. In this review, we describe the inflammasome receptors and their ligands, the molecular mechanisms leading to the assembly of this innate immune platform and the role of the inflammasome during viral and bacterial infections.
Collapse
Affiliation(s)
- Yvan Jamilloux
- Service de médecine interne, centre hospitalo-universitaire de la Croix-Rousse, 103, Grande rue de la Croix Rousse, 69004 Lyon, France - Centre international de recherche en infectiologie (CIRI), université de Lyon, Lyon, France - Inserm U1111, 21, avenue Tony Garnier, 69007 Lyon, France - CNRS, UMR 5308, Lyon, France - École normale supérieure, Lyon, France
| | | |
Collapse
|
50
|
Breslow-Deckman JM, Mattingly CM, Birket SE, Hoskins SN, Ho TN, Garvy BA, Feola DJ. Linezolid decreases susceptibility to secondary bacterial pneumonia postinfluenza infection in mice through its effects on IFN-γ. THE JOURNAL OF IMMUNOLOGY 2013; 191:1792-9. [PMID: 23833238 DOI: 10.4049/jimmunol.1300180] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Influenza infection predisposes patients to secondary bacterial pneumonia that contributes significantly to morbidity and mortality. Although this association is well documented, the mechanisms that govern this synergism are poorly understood. A window of hyporesponsiveness following influenza infection has been associated with a substantial increase in local and systemic IFN-γ concentrations. Recent data suggest that the oxazolidinone antibiotic linezolid decreases IFN-γ and TNF-α production in vitro from stimulated PBMCs. We therefore sought to determine whether linezolid would reverse immune hyporesponsiveness after influenza infection in mice through its effects on IFN-γ. In vivo dose-response studies demonstrated that oral linezolid administration sufficiently decreased bronchoalveolar lavage fluid levels of IFN-γ at day 7 postinfluenza infection in a dose-dependent manner. The drug also decreased morbidity as measured by weight loss compared with vehicle-treated controls. When mice were challenged intranasally with Streptococcus pneumoniae 7 d postinfection with influenza, linezolid pretreatment led to decreased IFN-γ and TNF-α production, decreased weight loss, and lower bacterial burdens at 24 h postbacterial infection in comparison with vehicle-treated controls. To determine whether these effects were due to suppression of IFN-γ, linezolid-treated animals were given intranasal instillations of rIFN-γ before challenge with S. pneumoniae. This partially reversed the protective effects observed in the linezolid-treated mice, suggesting that the modulatory effects of linezolid are mediated partially by its ability to blunt IFN-γ production. These results suggest that IFN-γ, and potentially TNF-α, may be useful drug targets for prophylaxis against secondary bacterial pneumonia following influenza infection.
Collapse
Affiliation(s)
- Jessica M Breslow-Deckman
- Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | | | | | | | | | | | | |
Collapse
|