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Lučiūnaitė A, Mašalaitė K, Plikusiene I, Maciulis V, Juciute S, Norkienė M, Žvirblienė A. Structural properties of immune complexes formed by viral antigens and specific antibodies shape the inflammatory response of macrophages. Cell Biosci 2024; 14:53. [PMID: 38664730 PMCID: PMC11046781 DOI: 10.1186/s13578-024-01237-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 04/20/2024] [Indexed: 04/28/2024] Open
Abstract
Data on the course of viral infections revealed severe inflammation as a consequence of antiviral immune response. Despite extensive research, there are insufficient data on the role of innate immune cells in promoting inflammation mediated by immune complexes (IC) of viral antigens and their specific antibodies. Recently, we demonstrated that antigens of human polyomaviruses (PyVs) induce an inflammatory response in macrophages. Here, we investigated macrophage activation by IC. We used primary murine macrophages as a cell model, virus-like particles (VLPs) of PyV capsid protein as antigens, and a collection of murine monoclonal antibodies (mAbs) of IgG1, IgG2a, IgG2b subclasses. The inflammatory response was investigated by analysing inflammatory chemokines and activation of NLRP3 inflammasome. We observed a diverse pattern of chemokine secretion in macrophages treated with different IC compared to VLPs alone. To link IC properties with cell activation status, we characterised the IC by advanced optical and acoustic techniques. Ellipsometry provided precise real-time kinetics of mAb-antigen interactions, while quartz crystal microbalance measurements showed changes in conformation and viscoelastic properties during IC formation. These results revealed differences in mAb-antigen interaction and mAb binding parameters of the investigated IC. We found that IC-mediated cell activation depends more on IC characteristics, including mAb affinity, than on mAb affinity for the activating Fc receptor. IC formed by the highest affinity mAb showed a significant enhancement of inflammasome activation. This may explain the hyperinflammation related to viral infection and vaccination. Our findings demonstrate that IC promote the viral antigen-induced inflammatory response depending on antibody properties.
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Affiliation(s)
- Asta Lučiūnaitė
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, 10257, Vilnius, Lithuania.
| | - Kristina Mašalaitė
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, 10257, Vilnius, Lithuania
| | - Ieva Plikusiene
- State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
- Pharmacy and Pharmacology Center, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Vincentas Maciulis
- State Research Institute Center for Physical Sciences and Technology, Vilnius, Lithuania
| | - Silvija Juciute
- NanoTechnas - Center of Nanotechnology and Materials Science, Faculty of Chemistry and Geosciences, Vilnius University, Vilnius, Lithuania
| | - Milda Norkienė
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, 10257, Vilnius, Lithuania
| | - Aurelija Žvirblienė
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, 10257, Vilnius, Lithuania
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Karachaliou M, de Sanjose S, Roumeliotaki T, Margetaki K, Vafeiadi M, Waterboer T, Chatzi L, Kogevinas M. Heterogeneous associations of polyomaviruses and herpesviruses with allergy-related phenotypes in childhood. Ann Allergy Asthma Immunol 2021; 127:191-199.e3. [PMID: 33895421 DOI: 10.1016/j.anai.2021.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/12/2021] [Accepted: 04/16/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Evidence suggests a complex interplay between infections and allergic diseases. OBJECTIVE To explore the association of 14 common viruses with eczema, asthma, and rhinoconjunctivitis in childhood. METHODS We used cross-sectional (n = 686) and prospective (n = 440) data from children participating in the Rhea birth cohort. Immunoglobulin G to polyomaviruses (BK polyomavirus, JC polyomavirus, KI polyomavirus [KIPyV], WU polyomavirus [WUPyV], human polyomavirus 6, human polyomavirus 7, Trichodysplasia spinulosa polyomavirus, Merkel cell polyomavirus, human polyomavirus 9, and human polyomavirus 10) and herpesviruses (Epstein-Barr virus, Cytomegalovirus, Herpes simplex virus-1, Herpes simplex virus-2) were measured at age 4 years by fluorescent bead-based multiplex serology. Definitions of eczema, asthma, and rhinoconjunctivitis at ages 4 and 6 years were based on questionnaires. Mediation of the associations by immune biomarkers was tested. RESULTS Less likely to have eczema at age 4 years were KIPyV-seropositive (odds ratio [OR], 0.47; 95% confidence interval [CI], 0.27-0.82) and human polyomavirus 6 (OR, 0.44; 95% CI, 0.26-0.73) compared with their seronegative counterparts. Seropositivity to Epstein-Barr virus was negatively associated with eczema at age 4 years (OR, 0.39; 95% CI, 0.22-0.67) and 6 years (OR, 0.50; 95% CI, 0.25-0.99). Children with a higher burden of herpesviruses or of skin polyomaviruses had the lowest odds of eczema at age 4 years. Higher odds for asthma at age 4 years were found for WUPyV-seropositive children (OR, 3.98; 95% CI, 1.38-11.51), and for children seropositive to both respiratory polyomaviruses (KIPyV and WUPyV) (OR, 7.35; 95% CI, 1.66-32.59) compared with children seronegative to both. No associations were observed for rhinoconjunctivitis. There was no evidence of mediation by immune biomarkers. CONCLUSION A heterogeneous pattern of infections and allergic diseases was observed with common infections associated with a decreased eczema risk and an increased asthma risk in children.
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Affiliation(s)
- Marianna Karachaliou
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece.
| | | | - Theano Roumeliotaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Katerina Margetaki
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Marina Vafeiadi
- Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Tim Waterboer
- Infections and Cancer Division, Infection, Inflammation, and Cancer Research Program, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Leda Chatzi
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Manolis Kogevinas
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain; Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
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Beyond Cytomegalovirus and Epstein-Barr Virus: a Review of Viruses Composing the Blood Virome of Solid Organ Transplant and Hematopoietic Stem Cell Transplant Recipients. Clin Microbiol Rev 2020; 33:33/4/e00027-20. [PMID: 32847820 DOI: 10.1128/cmr.00027-20] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Viral primary infections and reactivations are common complications in patients after solid organ transplantation (SOT) and hematopoietic stem cell transplantation (HSCT) and are associated with high morbidity and mortality. Among these patients, viral infections are frequently associated with viremia. Beyond the usual well-known viruses that are part of the routine clinical management of transplant recipients, numerous other viral signatures or genomes can be identified in the blood of these patients. The identification of novel viral species and variants by metagenomic next-generation sequencing has opened up a new field of investigation and new paradigms. Thus, there is a need to thoroughly describe the state of knowledge in this field with a review of all viral infections that should be scrutinized in high-risk populations. Here, we review the eukaryotic DNA and RNA viruses identified in blood, plasma, or serum samples of pediatric and adult SOT/HSCT recipients and the prevalence of their detection, with a particular focus on recently identified viruses and those for which their potential association with disease remains to be investigated, such as members of the Polyomaviridae, Anelloviridae, Flaviviridae, and Astroviridae families. Current knowledge of the clinical significance of these viral infections with associated viremia among transplant recipients is also discussed. To ensure a comprehensive description in these two populations, individuals described as healthy (mostly blood donors) are considered for comparative purposes. The list of viruses that should be on the clinicians' radar is certainly incomplete and will expand, but the challenge is to identify those of possible clinical significance.
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Survey of WU and KI polyomaviruses, coronaviruses, respiratory syncytial virus and parechovirus in children under 5 years of age in Tehran, Iran. IRANIAN JOURNAL OF MICROBIOLOGY 2020; 12:164-169. [PMID: 32494351 PMCID: PMC7244825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND OBJECTIVES Severe acute respiratory infections (SARI) remain an important cause for childhood morbidity worldwide. We designed a research with the objective of finding the frequency of respiratory viruses, particularly WU and KI polyomaviruses (WUPyV & KIPyV), human coronaviruses (HCoVs), human respiratory syncytial virus (HRSV) and human parechovirus (HPeV) in hospitalized children who were influenza negative. MATERIALS AND METHODS Throat swabs were collected from children younger than 5 years who have been hospitalized for SARI and screened for WUPyV, KIPyV, HCoVs, HRSV and HPeV using Real time PCR. RESULTS A viral pathogen was identified in 23 (11.16%) of 206 hospitalized children with SARI. The rate of virus detection was considerably greater in infants <12 months (78.2%) than in older children (21.8%). The most frequently detected viruses were HCoVs with 7.76% of positive cases followed by KIPyV (2%) and WUPyV (1.5%). No HPeV and HRSV were detected in this study. CONCLUSION This research shown respiratory viruses as causes of childhood acute respiratory infections, while as most of mentioned viruses usually causes mild respiratory diseases, their frequency might be higher in outpatient children. Meanwhile as HRSV is really sensitive to inactivation due to environmental situations and its genome maybe degraded, then for future studies, we need to use fresh samples for HRSV detection. These findings addressed a need for more studies on viral respiratory tract infections to help public health.
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Caldeira DB, de Souza Luna LK, Watanabe A, Perosa AH, Granato C, Bellei N. The occurrence of polyomaviruses WUPyV and KIPyV among patients with severe respiratory infections. Braz J Microbiol 2018; 50:133-137. [PMID: 30637634 PMCID: PMC6863251 DOI: 10.1007/s42770-018-0038-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/15/2018] [Indexed: 12/30/2022] Open
Abstract
In 2007, the new polyomaviruses WUPyV and KIPyV were identified in patients with acute respiratory infections. The aim of this study was to investigate these viruses in hospitalized patients with severe acute respiratory infection (SARI). A retrospective study was conducted with 251 patients, from April 2009 to November 2010, using nasopharyngeal aspirates, naso- and oropharyngeal swab samples from hospitalized patients (children < 12 years and adults) who had SARI within 7 days of the onset of symptoms, including fever (> 38.8 °C), dyspnea, and cough. Clinical and epidemiological information was obtained through standardized questionnaire. Enrolled patients were initially suspected to have influenza A(H1N1)pdm09 infections. WUPyV and KIPyV were detected by real-time PCR. Samples were also tested for influenza A and B viruses, human respiratory syncytial virus, rhinovirus, metapneumovirus, coronavirus, adenovirus, and parainfluenza viruses. WUPyV and KIPyV were detected in 6.77% (4.78% and 1.99%, respectively) of hospitalized patients with SARI. All samples from children showed coinfections (rhinovirus was the most commonly detected). Six adults had polyomavirus infection and four (1.6%) had monoinfection. Of them, 3 reported comorbidities including immunosuppression and 1 patient had worse outcome, requiring ICU admission. These preliminary data may suggest a possible role of polyomaviruses in SARI among immunocompromised adult patients.
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Affiliation(s)
- Débora Bellini Caldeira
- Medicine Department, Clinical Virology Laboratory, Infectious Diseases Unit, Sao Paulo Federal University, Rua Pedro de Toledo, 781, 15 andar, Sao Paulo, Brazil.
| | - Luciano Kleber de Souza Luna
- Medicine Department, Clinical Virology Laboratory, Infectious Diseases Unit, Sao Paulo Federal University, Rua Pedro de Toledo, 781, 15 andar, Sao Paulo, Brazil
| | - Aripuana Watanabe
- Department of parasitology, microbiology and immunology, Biologic Sciences Institute, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Ana Helena Perosa
- Medicine Department, Clinical Virology Laboratory, Infectious Diseases Unit, Sao Paulo Federal University, Rua Pedro de Toledo, 781, 15 andar, Sao Paulo, Brazil
| | - Celso Granato
- Medicine Department, Clinical Virology Laboratory, Infectious Diseases Unit, Sao Paulo Federal University, Rua Pedro de Toledo, 781, 15 andar, Sao Paulo, Brazil
| | - Nancy Bellei
- Medicine Department, Clinical Virology Laboratory, Infectious Diseases Unit, Sao Paulo Federal University, Rua Pedro de Toledo, 781, 15 andar, Sao Paulo, Brazil
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