1
|
Censi ST, Mariani-Costantini R, Granzotto A, Tomassini V, Sensi SL. Endogenous retroviruses in multiple sclerosis: A network-based etiopathogenic model. Ageing Res Rev 2024; 99:102392. [PMID: 38925481 DOI: 10.1016/j.arr.2024.102392] [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] [Received: 04/08/2024] [Revised: 06/10/2024] [Accepted: 06/19/2024] [Indexed: 06/28/2024]
Abstract
The present perspective article proposes an etiopathological model for multiple sclerosis pathogenesis and progression associated with the activation of human endogenous retroviruses. We reviewed preclinical, clinical, epidemiological, and evolutionary evidence indicating how the complex, multi-level interplay of genetic traits and environmental factors contributes to multiple sclerosis. We propose that endogenous retroviruses transactivation acts as a critical node in disease development. We also discuss the rationale for combined anti-retroviral therapy in multiple sclerosis as a disease-modifying therapeutic strategy. Finally, we propose that the immuno-pathogenic process triggered by endogenous retrovirus activation can be extended to aging and aging-related neurodegeneration. In this regard, endogenous retroviruses can be envisioned to act as epigenetic noise, favoring the proliferation of disorganized cellular subpopulations and accelerating system-specific "aging". Since inflammation and aging are two sides of the same coin (plastic dis-adaptation to external stimuli with system-specific degree of freedom), the two conditions may be epiphenomenal products of increased epigenomic entropy. Inflammation accelerates organ-specific aging, disrupting communication throughout critical systems of the body and producing symptoms. Overlapping neurological symptoms and syndromes may emerge from the activity of shared molecular networks that respond to endogenous retroviruses' reactivation.
Collapse
Affiliation(s)
- Stefano T Censi
- Department of Neuroscience, Imaging, and Clinical Sciences, "G. d'Annunzio" University, Chieti-Pescara, Italy; Institute for Advanced Biomedical Technologies (ITAB), "G. d'Annunzio" University, Chieti-Pescara, Italy.
| | - Renato Mariani-Costantini
- Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University, Chieti-Pescara, Italy
| | - Alberto Granzotto
- Department of Neuroscience, Imaging, and Clinical Sciences, "G. d'Annunzio" University, Chieti-Pescara, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University, Chieti-Pescara, Italy
| | - Valentina Tomassini
- Department of Neuroscience, Imaging, and Clinical Sciences, "G. d'Annunzio" University, Chieti-Pescara, Italy; Institute for Advanced Biomedical Technologies (ITAB), "G. d'Annunzio" University, Chieti-Pescara, Italy; Multiple Sclerosis Centre, Institute of Neurology, SS Annunziata Hospital, "G. d'Annunzio" University, Chieti, Italy
| | - Stefano L Sensi
- Department of Neuroscience, Imaging, and Clinical Sciences, "G. d'Annunzio" University, Chieti-Pescara, Italy; Institute for Advanced Biomedical Technologies (ITAB), "G. d'Annunzio" University, Chieti-Pescara, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University, Chieti-Pescara, Italy; Multiple Sclerosis Centre, Institute of Neurology, SS Annunziata Hospital, "G. d'Annunzio" University, Chieti, Italy.
| |
Collapse
|
2
|
Soleimani MF, Ayubi E, Khosronezhad S, Hasler G, Amiri MR, Beikpour F, Jalilian FA. Human endogenous retroviruses type W (HERV-) activation and schizophrenia: A meta-analysis. Schizophr Res 2024; 271:220-227. [PMID: 39053037 DOI: 10.1016/j.schres.2024.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/06/2024] [Accepted: 07/07/2024] [Indexed: 07/27/2024]
Abstract
OBJECTIVE Human endogenous retroviruses (HERV) are the remnants of infections that occurred million years ago. They gradually integrated into the human genome, comprising 8 % of it. There are growing reports suggesting their potential role in various diseases, including schizophrenia. Schizophrenia, a serious psychiatric disorder, is caused by the interaction of genetic and environmental factors. In the present paper, we investigated studies focusing on the association between schizophrenia and HERV-W. METHODS We registered this study at PROSPERO (registration number: CRD42022301122). The entire steps of this study were based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. We searched PubMed, Scopus, Web of Science, and Google Scholar up to 1 August 2022. Heterogeneity was estimated through I2 statistics, and the association was measured using the first estimate and penalization methods. RESULTS Finally, 13 eligible studies were analyzed, including 698 cases and 728 controls. The overall odds ratio indicated a significant association in both the first estimate (OR = 9.34, 95 % CI = 4.92-17.75; P = 0.002) and penalization (OR = 7.38, 95 % CI = 4.15-13.10; P = 0.003) methods. In the subgroup analysis, among HERV-W fragments, the HERV-W envelope protein or RNA (OR = 11.41, 95 % CI: 5.67-22.97; P = 0.03) showed the strongest association with schizophrenia. CONCLUSION Our meta-analysis showed that HERV-W is significantly associated with schizophrenia. More studies are required to determine the pathophysiological mechanism and the diagnostic, prognostic, and therapeutic value of HERV-W in schizophrenia.
Collapse
Affiliation(s)
| | - Erfan Ayubi
- Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Saman Khosronezhad
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Gregor Hasler
- University of Fribourg, Center for Psychiatric Research, Switzerland
| | - Mohammad Reza Amiri
- Department of Medical Library and Information Sciences, School of Paramedicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farzad Beikpour
- Department of Pediatrics, School of Medicine, Washington University, St. Louis, MO, 63110, USA
| | - Farid Azizi Jalilian
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
| |
Collapse
|
3
|
Perron H. A tale of a hidden family of genetic immigrants. Microbes Infect 2024:105387. [PMID: 38944111 DOI: 10.1016/j.micinf.2024.105387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/01/2024]
Abstract
Though not usual for the editors of a scientific journal to ask that a story be told to its readers, this special issue is offering an opportunity to pay tribute to all those who have made it possible for a long scientific journey to open up many research avenues, to access the discoveries of what was not known and to the understanding of what was unveiled in the field of human endogenous retroviruses. In particular, and beyond a simple fortuitous association, to show their pathogenic involvement in certain diseases whose causality has been the subject of numerous and variable hypotheses.
Collapse
Affiliation(s)
- Hervé Perron
- GeNeuro, 3 chemin du Pré-Fleuri, 1228 Plan-les-ouates, Geneva, Switzerland; Geneuro-Innovation, 60A, Avenue Rockefeller, 69008 Lyon, France.
| |
Collapse
|
4
|
Gruchot J, Reiche L, Werner L, Herrero F, Schira-Heinen J, Meyer U, Küry P. Molecular dissection of HERV-W dependent microglial- and astroglial cell polarization. Microbes Infect 2024:105382. [PMID: 38944109 DOI: 10.1016/j.micinf.2024.105382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 06/12/2024] [Accepted: 06/20/2024] [Indexed: 07/01/2024]
Abstract
The endogenous retrovirus type W (HERV-W) is a human-specific entity, which was initially discovered in multiple sclerosis (MS) patient derived cells. We initially found that the HERV-W envelope (ENV) protein negatively affects oligodendrogenesis and controls microglial cell polarization towards a myelinated axon associated and damaging phenotype. Such first functional assessments were conducted ex vivo, given the human-specific origin of HERV-W. Recent experimental evidence gathered on a novel transgenic mouse model, mimicking activation and expression of the HERV-W ENV protein, revealed that all glial cell types are impacted and that cellular fates, differentiation, and functions were changed. In order to identify HERV-W-specific signatures in glial cells, the current study analyzed the transcriptome of ENV protein stimulated microglial- and astroglial cells and compared the transcriptomic signatures to lipopolysaccharide (LPS) stimulated cells, owing to the fact that both ligands can activate toll-like receptor-4 (TLR-4). Additionally, a comparison between published disease associated glial signatures and the transcriptome of HERV-W ENV stimulated glial cells was conducted. We, therefore, provide here for the first time a detailed molecular description of specific HERV-W ENV evoked effects on those glial cell populations that are involved in smoldering neuroinflammatory processes relevant for progression of neurodegenerative diseases.
Collapse
Affiliation(s)
- Joel Gruchot
- Heinrich-Heine-University Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Department of Neurology, D-40225 Düsseldorf, Germany
| | - Laura Reiche
- Heinrich-Heine-University Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Department of Neurology, D-40225 Düsseldorf, Germany
| | - Luisa Werner
- Heinrich-Heine-University Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Department of Neurology, D-40225 Düsseldorf, Germany
| | - Felisa Herrero
- Institute of Veterinary Pharmacology and Toxicology, University of Zürich, Vetsuisse, Zürich, Switzerland
| | - Jessica Schira-Heinen
- Heinrich-Heine-University Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Department of Neurology, D-40225 Düsseldorf, Germany
| | - Urs Meyer
- Institute of Veterinary Pharmacology and Toxicology, University of Zürich, Vetsuisse, Zürich, Switzerland; Neuroscience Center Zürich, University of Zürich and ETH Zürich, Zürich, Switzerland
| | - Patrick Küry
- Heinrich-Heine-University Düsseldorf, Medical Faculty and University Hospital Düsseldorf, Department of Neurology, D-40225 Düsseldorf, Germany; Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
| |
Collapse
|
5
|
Adler GL, Le K, Fu Y, Kim WS. Human Endogenous Retroviruses in Neurodegenerative Diseases. Genes (Basel) 2024; 15:745. [PMID: 38927681 PMCID: PMC11202925 DOI: 10.3390/genes15060745] [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] [Received: 05/10/2024] [Revised: 05/25/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Human endogenous retroviruses (HERVs) are DNA transposable elements that have integrated into the human genome via an ancestral germline infection. The potential importance of HERVs is underscored by the fact that they comprise approximately 8% of the human genome. HERVs have been implicated in the pathogenesis of neurodegenerative diseases, a group of CNS diseases characterized by a progressive loss of structure and function of neurons, resulting in cell death and multiple physiological dysfunctions. Much evidence indicates that HERVs are initiators or drivers of neurodegenerative processes in multiple sclerosis and amyotrophic lateral sclerosis, and clinical trials have been designed to target HERVs. In recent years, the role of HERVs has been explored in other major neurodegenerative diseases, including frontotemporal dementia, Alzheimer's disease and Parkinson's disease, with some interesting discoveries. This review summarizes and evaluates the past and current research on HERVs in neurodegenerative diseases. It discusses the potential role of HERVs in disease manifestation and neurodegeneration. It critically reviews antiretroviral strategies used in the therapeutic intervention of neurodegenerative diseases.
Collapse
Affiliation(s)
- Gabrielle L. Adler
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
- School of Medical Sciences, The University of Sydney, Sydney, NSW 2050, Australia
| | - Kelvin Le
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
- School of Medical Sciences, The University of Sydney, Sydney, NSW 2050, Australia
| | - YuHong Fu
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
- School of Medical Sciences, The University of Sydney, Sydney, NSW 2050, Australia
| | - Woojin Scott Kim
- Brain and Mind Centre, The University of Sydney, Sydney, NSW 2050, Australia
- School of Medical Sciences, The University of Sydney, Sydney, NSW 2050, Australia
- School of Biomedical Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| |
Collapse
|
6
|
Tarlinton R, Tanasescu R, Shannon-Lowe C, Gran B. Ocrelizumab B cell depletion has no effect on HERV RNA expression in PBMC in MS patients. Mult Scler Relat Disord 2024; 86:105597. [PMID: 38598954 DOI: 10.1016/j.msard.2024.105597] [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] [Received: 11/02/2023] [Revised: 01/29/2024] [Accepted: 03/29/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Epstein barr virus (EBV) infection of B cells is now understood to be one of the triggering events for the development of Multiple Sclerosis (MS), a progressive immune-mediated disease of the central nervous system. EBV infection is also linked to expression of human endogenous retroviruses (HERVs) of the HERV-W group, a further risk factor for the development of MS. Ocrelizumab is a high-potency disease-modifying treatment (DMT) for MS, which depletes B cells by targeting CD20. OBJECTIVES We studied the effects of ocrelizumab on gene expression in peripheral blood mononuclear cells (PBMC) from paired samples from 20 patients taken prior to and 6 months after beginning ocrelizumab therapy. We hypothesised that EBV and HERV-W loads would be lower in post-treatment samples. METHODS Samples were collected in Paxgene tubes, subject to RNA extraction and Illumina paired end short read mRNA sequencing with mapping of sequence reads to the human genome using Salmon and differential gene expression compared with DeSeq2. Mapping was also performed separately to the HERV-D database of HERV sequences and the EBV reference sequence. RESULTS Patient samples were more strongly clustered by individual rather than disease type (relapsing/remitting or primary progressive), treatment (pre and post), age, or sex. Fourteen genes, all clearly linked to B cell function were significantly down regulated in the post treatment samples. Interestingly only one pre-treatment sample had detectable EBV RNA and there were no significant differences in HERV expression (of any group) between pre- and post-treatment samples. CONCLUSIONS While EBV and HERV expression are clearly linked to triggering MS pathogenesis, it does not appear that high level expression of these viruses is a part of the ongoing disease process or that changes in virus load are associated with ocrelizumab treatment.
Collapse
Affiliation(s)
- Rachael Tarlinton
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, United Kingdom.
| | - Radu Tanasescu
- Department of Neurology, Nottingham University Hospitals NHS Trust, Queens Medical Centre, Derby Road, Nottingham, United Kingdom; School of Medicine, University of Nottingham, University Park Campus, Nottingham, United Kingdom
| | - Claire Shannon-Lowe
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Bruno Gran
- Department of Neurology, Nottingham University Hospitals NHS Trust, Queens Medical Centre, Derby Road, Nottingham, United Kingdom; School of Medicine, University of Nottingham, University Park Campus, Nottingham, United Kingdom
| |
Collapse
|
7
|
da Silva AL, Guedes BLM, Santos SN, Correa GF, Nardy A, Nali LHDS, Bachi ALL, Romano CM. Beyond pathogens: the intriguing genetic legacy of endogenous retroviruses in host physiology. Front Cell Infect Microbiol 2024; 14:1379962. [PMID: 38655281 PMCID: PMC11035796 DOI: 10.3389/fcimb.2024.1379962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/22/2024] [Indexed: 04/26/2024] Open
Abstract
The notion that viruses played a crucial role in the evolution of life is not a new concept. However, more recent insights suggest that this perception might be even more expansive, highlighting the ongoing impact of viruses on host evolution. Endogenous retroviruses (ERVs) are considered genomic remnants of ancient viral infections acquired throughout vertebrate evolution. Their exogenous counterparts once infected the host's germline cells, eventually leading to the permanent endogenization of their respective proviruses. The success of ERV colonization is evident so that it constitutes 8% of the human genome. Emerging genomic studies indicate that endogenous retroviruses are not merely remnants of past infections but rather play a corollary role, despite not fully understood, in host genetic regulation. This review presents some evidence supporting the crucial role of endogenous retroviruses in regulating host genetics. We explore the involvement of human ERVs (HERVs) in key physiological processes, from their precise and orchestrated activities during cellular differentiation and pluripotency to their contributions to aging and cellular senescence. Additionally, we discuss the costs associated with hosting a substantial amount of preserved viral genetic material.
Collapse
Affiliation(s)
- Amanda Lopes da Silva
- Instituto de Medicina Tropical de São Paulo, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Bruno Luiz Miranda Guedes
- Instituto de Medicina Tropical de São Paulo, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Samuel Nascimento Santos
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | - Giovanna Francisco Correa
- Instituto de Medicina Tropical de São Paulo, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ariane Nardy
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | | | - Andre Luis Lacerda Bachi
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | - Camila Malta Romano
- Instituto de Medicina Tropical de São Paulo, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| |
Collapse
|
8
|
Takahashi Ueda M. Retrotransposon-derived transcripts and their functions in immunity and disease. Genes Genet Syst 2024; 98:305-319. [PMID: 38199240 DOI: 10.1266/ggs.23-00187] [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: 01/12/2024] Open
Abstract
Retrotransposons, which account for approximately 42% of the human genome, have been increasingly recognized as "non-self" pathogen-associated molecular patterns (PAMPs) due to their virus-like sequences. In abnormal conditions such as cancer and viral infections, retrotransposons that are aberrantly expressed due to impaired epigenetic suppression display PAMPs, leading to their recognition by pattern recognition receptors (PRRs) of the innate immune system and triggering inflammation. This viral mimicry mechanism has been observed in various human diseases, including aging and autoimmune disorders. However, recent evidence suggests that retrotransposons possess highly regulated immune reactivity and play important roles in the development and function of the immune system. In this review, I discuss a wide range of retrotransposon-derived transcripts, their role as targets in immune recognition, and the diseases associated with retrotransposon activity. Furthermore, I explore the implications of chimeric transcripts formed between retrotransposons and known gene mRNAs, which have been previously underestimated, for the increase of immune-related gene isoforms and their influence on immune function. Retrotransposon-derived transcripts have profound and multifaceted effects on immune system function. The aim of this comprehensive review is to provide a better understanding of the complex relationship between retrotransposon transcripts and immune defense.
Collapse
Affiliation(s)
- Mahoko Takahashi Ueda
- Department of Genomic Function and Diversity, Medical Research Institute, Tokyo Medical and Dental University
| |
Collapse
|
9
|
Ruberto S, Cossu D, Sechi LA. Correlation between antibodies against the pathogenic pHERV-W envelope protein and the inflammatory phase of multiple sclerosis. Immunology 2024; 171:270-276. [PMID: 37985008 DOI: 10.1111/imm.13712] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023] Open
Abstract
The role of retroviral envelope proteins belonging to the Human Endogenous Retroviral family 'W' (HERV-W), specifically syncytin-1 and pathogenic HERV-W (pHERV-W), as potential risk factors in multiple sclerosis (MS) has been established. This study aimed to investigate the humoral response to syncytin-1 and pHERV-W-derived peptides in a group of relapsing remitting MS patients categorized as having acute or stable disease. Furthermore, an inhibition assay was conducted to assess the extent of cross-reactivity between the two epitopes. The findings revealed that MS patients in the acute phase exhibited a higher specific antibody response to the pHERV-W env epitope compared to syncytin-1. This suggests a potential pathogenic role for pHERV-W env during the inflammatory stages of central nervous system involvement, and these antibody responses could serve as useful biomarkers for monitoring the progression of the disease.
Collapse
Affiliation(s)
- Stefano Ruberto
- Division of Microbiology and Virology, Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Davide Cossu
- Division of Microbiology and Virology, Department of Biomedical Sciences, University of Sassari, Sassari, Italy
- Department of Neurology, Juntendo University, Tokyo, Japan
| | - Leonardo A Sechi
- Division of Microbiology and Virology, Department of Biomedical Sciences, University of Sassari, Sassari, Italy
- SC Microbiologia e Virologia, Azienda Ospedaliera Universitaria, Sassari, Italy
| |
Collapse
|
10
|
Katoh H, Honda T. Roles of Human Endogenous Retroviruses and Endogenous Virus-Like Elements in Cancer Development and Innate Immunity. Biomolecules 2023; 13:1706. [PMID: 38136578 PMCID: PMC10741599 DOI: 10.3390/biom13121706] [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: 10/28/2023] [Revised: 11/18/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
Human endogenous retroviruses (HERVs) are remnants of ancient retroviral infections in the host genome. Although mutations and silencing mechanisms impair their original role in viral replication, HERVs are believed to play roles in various biological processes. Long interspersed nuclear elements (LINEs) are non-LTR retrotransposons that have a lifecycle resembling that of retroviruses. Although LINE expression is typically silenced in somatic cells, it also contributes to various biological processes. The aberrant expression of HERVs and LINEs is closely associated with the development of cancer and/or immunological diseases, suggesting that they are integrated into various pathways related to the diseases. HERVs/LINEs control gene expression depending on the context as promoter/enhancer elements. Some RNAs and proteins derived from HERVs/LINEs have oncogenic potential, whereas others stimulate innate immunity. Non-retroviral endogenous viral elements (nrEVEs) are a novel type of virus-like element in the genome. nrEVEs may also be involved in host immunity. This article provides a current understanding of how these elements impact cellular physiology in cancer development and innate immunity, and provides perspectives for future studies.
Collapse
Affiliation(s)
- Hirokazu Katoh
- Department of Virology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan;
| | - Tomoyuki Honda
- Department of Virology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan;
- Department of Virology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| |
Collapse
|
11
|
Krishnan VS, Kõks S. Transcriptional Landscape of Repetitive Elements in Psoriatic Skin from Large Cohort Studies: Relevance to Psoriasis Pathophysiology. Int J Mol Sci 2023; 24:16725. [PMID: 38069048 PMCID: PMC10706217 DOI: 10.3390/ijms242316725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
While studies demonstrating the expression of repetitive elements (REs) in psoriatic skin using RNA-seq have been published before, not many studies have focused on the genome-wide expression patterns using larger cohorts. This study investigated the transcriptional landscape of differentially expressed REs in lesional and non-lesional skin from two previously published large datasets. We observed significant differential expression of REs in lesional psoriatic skin as well as the skin of healthy controls. Significant downregulation of several ERVs, HERVs (including HERV-K) and LINEs was observed in lesional psoriatic skin from both datasets. The upregulation of a small subset of HERV-Ks and Alus in lesional psoriatic skin was also reported. An interesting finding from this expression data was the significant upregulation and overlapping of tRNA repetitive elements in lesional and non-lesional psoriatic skin. The data from this study indicate the potential role of REs in the immunopathogenesis of psoriasis. The expression data from the two independent large study cohorts are powerful enough to confidently verify the differential expression of REs in relation to psoriatic skin pathology. Further studies are warranted to understand the functional impact of these repetitive elements in psoriasis pathogenesis, thereby expanding their significance as a potential targeting pathway for the disease treatment of psoriasis and other inflammatory diseases.
Collapse
Affiliation(s)
- Vidya S. Krishnan
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Discovery Way, Murdoch, WA 1650, Australia;
- Perron Institute for Neurological and Translational Science, 8 Verdun St., Nedlands, WA 6009, Australia
| | - Sulev Kõks
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Discovery Way, Murdoch, WA 1650, Australia;
- Perron Institute for Neurological and Translational Science, 8 Verdun St., Nedlands, WA 6009, Australia
| |
Collapse
|
12
|
Balestrieri E, Corinaldesi E, Fabi M, Cipriani C, Giudice M, Conti A, Minutolo A, Petrone V, Fanelli M, Miele MT, Andreozzi L, Guida F, Filice E, Meli M, Grelli S, Rasi G, Toschi N, Torcetta F, Matteucci C, Lanari M, Sinibaldi-Vallebona P. Preliminary Evidence of the Differential Expression of Human Endogenous Retroviruses in Kawasaki Disease and SARS-CoV-2-Associated Multisystem Inflammatory Syndrome in Children. Int J Mol Sci 2023; 24:15086. [PMID: 37894766 PMCID: PMC10606856 DOI: 10.3390/ijms242015086] [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: 08/23/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
Multisystem inflammatory syndrome in children (MIS-C) is a postinfectious sequela of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), with some clinical features overlapping with Kawasaki disease (KD). Our research group and others have highlighted that the spike protein of SARS-CoV-2 can trigger the activation of human endogenous retroviruses (HERVs), which in turn induces inflammatory and immune reactions, suggesting HERVs as contributing factors in COVID-19 immunopathology. With the aim to identify new factors involved in the processes underlying KD and MIS-C, we analysed the transcriptional levels of HERVs, HERV-related genes, and immune mediators in children during the acute and subacute phases compared with COVID-19 paediatric patients and healthy controls. The results showed higher levels of HERV-W, HERV-K, Syn-1, and ASCT-1/2 in KD, MIS-C, and COV patients, while higher levels of Syn-2 and MFSD2A were found only in MIS-C patients. Moreover, KD and MIS-C shared the dysregulation of several inflammatory and regulatory cytokines. Interestingly, in MIS-C patients, negative correlations have been found between HERV-W and IL-10 and between Syn-2 and IL-10, while positive correlations have been found between HERV-K and IL-10. In addition, HERV-W expression positively correlated with the C-reactive protein. This pilot study supports the role of HERVs in inflammatory diseases, suggesting their interplay with the immune system in this setting. The elevated expression of Syn-2 and MFSD2A seems to be a distinctive trait of MIS-C patients, allowing to distinguish them from KD ones. The understanding of pathological mechanisms can lead to the best available treatment for these two diseases, limiting complications and serious outcomes.
Collapse
Affiliation(s)
- Emanuela Balestrieri
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Elena Corinaldesi
- Pediatric Unit, Ramazzini Hospital, 41012 Carpi, Italy; (E.C.); (F.T.)
| | - Marianna Fabi
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Chiara Cipriani
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Martina Giudice
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Allegra Conti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (A.C.); (N.T.)
| | - Antonella Minutolo
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Vita Petrone
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Marialaura Fanelli
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Martino Tony Miele
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Laura Andreozzi
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Fiorentina Guida
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Emanuele Filice
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Matteo Meli
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Sandro Grelli
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Guido Rasi
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Nicola Toschi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (A.C.); (N.T.)
- Martinos Center for Biomedical Imaging and Harvard Medical School, Boston, MA 02129, USA
| | | | - Claudia Matteucci
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
| | - Marcello Lanari
- Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40126 Bologna, Italy; (L.A.); (F.G.); (E.F.); (M.M.); (M.L.)
| | - Paola Sinibaldi-Vallebona
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (C.C.); (M.G.); (A.M.); (V.P.); (M.F.); (M.T.M.); (S.G.); (G.R.); (C.M.); (P.S.-V.)
- National Research Council, Institute of Translational Pharmacology, 00133 Rome, Italy
| |
Collapse
|
13
|
Gruchot J, Lewen I, Dietrich M, Reiche L, Sindi M, Hecker C, Herrero F, Charvet B, Weber-Stadlbauer U, Hartung HP, Albrecht P, Perron H, Meyer U, Küry P. Transgenic expression of the HERV-W envelope protein leads to polarized glial cell populations and a neurodegenerative environment. Proc Natl Acad Sci U S A 2023; 120:e2308187120. [PMID: 37695891 PMCID: PMC10515160 DOI: 10.1073/pnas.2308187120] [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] [Received: 05/16/2023] [Accepted: 08/07/2023] [Indexed: 09/13/2023] Open
Abstract
The human endogenous retrovirus type W (HERV-W) has been identified and repeatedly confirmed as human-specific pathogenic entity affecting many cell types in multiple sclerosis (MS). Our recent contributions revealed the encoded envelope (ENV) protein to disturb myelin repair by interfering with oligodendroglial precursor differentiation and by polarizing microglial cells toward an axon-damage phenotype. Indirect proof of ENV's antiregenerative and degenerative activities has been gathered recently in clinical trials using a neutralizing anti-ENV therapeutic antibody. Yet direct proof of its mode of action can only be presented here based on transgenic ENV expression in mice. Upon demyelination, we observed myelin repair deficits, neurotoxic microglia and astroglia, and increased axon degeneration. Experimental autoimmune encephalomyelitis activity progressed faster in mutant mice equally accompanied by activated glial cells. This study therefore provides direct evidence on HERV-W ENV's contribution to the overall negative impact of this activated viral entity in MS.
Collapse
Affiliation(s)
- Joel Gruchot
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Isabel Lewen
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Michael Dietrich
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Laura Reiche
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Mustafa Sindi
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Christina Hecker
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | - Felisa Herrero
- Institute of Veterinary Pharmacology and Toxicology, University of Zürich-Vetsuisse, CH-8057Zürich, Switzerland
| | | | - Ulrike Weber-Stadlbauer
- Institute of Veterinary Pharmacology and Toxicology, University of Zürich-Vetsuisse, CH-8057Zürich, Switzerland
- Neuroscience Center Zurich, University of Zürich and ETH Zürich, CH-8057Zürich, Switzerland
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
- Brain and Mind Center, University of Sydney, NSW 2050Sydney, Australia
- Department of Neurology, Palacky University Olomouc, 77146Olomouc, Czech Republic
| | - Philipp Albrecht
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
| | | | - Urs Meyer
- Institute of Veterinary Pharmacology and Toxicology, University of Zürich-Vetsuisse, CH-8057Zürich, Switzerland
- Neuroscience Center Zurich, University of Zürich and ETH Zürich, CH-8057Zürich, Switzerland
| | - Patrick Küry
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, 40225Düsseldorf, Germany
- Department of Neurology, University of Bern, CH-3010Bern, Switzerland
| |
Collapse
|
14
|
Giovannoni G, Hawkes CH, Lechner-Scott J, Levy M, Ann Yeh E. CNS resilience in the progression of MS. Mult Scler Relat Disord 2023; 77:104937. [PMID: 37634271 DOI: 10.1016/j.msard.2023.104937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Resilience; Progressive multiple sclerosis; Genomics.
Collapse
Affiliation(s)
- Gavin Giovannoni
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
| | - Christopher H Hawkes
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | | | - Michael Levy
- Massachusetts General Hospital and Harvard Medical School, MA, United States
| | - E Ann Yeh
- Department of Paediatrics (Neurology), Hospital for Sick Children, Division of Neuroscience and Mental Health, The Hospital for Sick Children Research Institute University of Toronto, Canada
| |
Collapse
|
15
|
Tovo PA, Galliano I, Parodi E, Calvi C, Gambarino S, Licciardi F, Dini M, Montanari P, Branca M, Ramenghi U, Bergallo M. Children with Chronic Immune Thrombocytopenia Exhibit High Expression of Human Endogenous Retroviruses TRIM28 and SETDB1. Genes (Basel) 2023; 14:1569. [PMID: 37628621 PMCID: PMC10454145 DOI: 10.3390/genes14081569] [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] [Received: 07/11/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Chronic immune thrombocytopenia (CITP) is an autoimmune disease whose underlying biologic mechanisms remain elusive. Human endogenous retroviruses (HERVs) derive from ancestral infections and constitute about 8% of our genome. A wealth of clinical and experimental studies highlights their pivotal pathogenetic role in autoimmune diseases. Epigenetic mechanisms, such as those modulated by TRIM28 and SETDB1, are involved in HERV activation and regulation of immune response. We assessed, through a polymerase chain reaction real-time Taqman amplification assay, the transcription levels of pol genes of HERV-H, HERV-K, and HERV-W; env genes of Syncytin (SYN)1, SYN2, and HERV-W; as well as TRIM28 and SETDB1 in whole blood from 34 children with CITP and age-matched healthy controls (HC). The transcriptional levels of all HERV sequences, with the exception of HERV-W-env, were significantly enhanced in children with CITP as compared to HC. Patients on eltrombopag treatment exhibited lower expression of SYN1, SYN2, and HERV-W-env as compared to untreated patients. The mRNA concentrations of TRIM28 and SETDB1 were significantly higher and were positively correlated with those of HERVs in CITP patients. The over-expressions of HERVs and TRIM28/SETDB1 and their positive correlations in patients with CITP are suggestive clues of their contribution to the pathogenesis of the disease and support innovative interventions to inhibit HERV and TRIM28/SETDB1 expressions in patients unresponsive to standard therapies.
Collapse
Affiliation(s)
- Pier-Angelo Tovo
- Department of Public Health and Pediatric Sciences, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (P.-A.T.); (U.R.)
| | - Ilaria Galliano
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| | - Emilia Parodi
- Pediatric and Neonatology Unit, Ordine Mauriziano Hospital, Largo Filippo Turati 62, 10128 Turin, Italy;
| | - Cristina Calvi
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| | - Stefano Gambarino
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| | - Francesco Licciardi
- Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy;
| | - Maddalena Dini
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| | - Paola Montanari
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| | - Margherita Branca
- Postgraduate School of Pediatrics, University of Turin, Piazza Polonia 94, 10126 Turin, Italy;
| | - Ugo Ramenghi
- Department of Public Health and Pediatric Sciences, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (P.-A.T.); (U.R.)
- Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy;
- Postgraduate School of Pediatrics, University of Turin, Piazza Polonia 94, 10126 Turin, Italy;
| | - Massimiliano Bergallo
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Regina Margherita Children’s Hospitalno, Piazza Polonia 94, 10126 Turin, Italy; (I.G.); (C.C.); (S.G.); (M.D.); (P.M.)
| |
Collapse
|
16
|
Tamouza R, Meyer U, Lucas A, Richard JR, Nkam I, Pinot A, Djonouma N, Boukouaci W, Charvet B, Pierquin J, Brunel J, Fourati S, Rodriguez C, Barau C, Le Corvoisier P, El Abdellati K, De Picker L, Perron H, Leboyer M. Patients with psychosis spectrum disorders hospitalized during the COVID-19 pandemic unravel overlooked SARS-CoV-2 past infection clustering with HERV-W ENV expression and chronic inflammation. Transl Psychiatry 2023; 13:272. [PMID: 37524719 PMCID: PMC10390536 DOI: 10.1038/s41398-023-02575-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023] Open
Abstract
Epidemiology has repeatedly associated certain infections with a risk of further developing psychiatric diseases. Such infections can activate retro-transposable genetic elements (HERV) known to trigger immune receptors and impair synaptic plasticity of neuroreceptors. Since the HERV-W ENV protein was recently shown to co-cluster with pro-inflammatory cytokines in a subgroup of patients with schizophrenia or bipolar disorder, we questioned the influence of the COVID-19 pandemic on patients with psychosis spectrum disorders (PSD). Present results revealed that (i) SARS-CoV-2 serology shows high prevalence and titers of antibodies in PSD, (ii) HERV-W ENV is detected in seropositive individuals only and (iii) SARS-CoV-2 and HERV-W ENV positivity co-clustered with high serum levels of pro-inflammatory cytokines in psychotic patients. These results thus suggest that SARS-CoV-2 infection in many patients with psychotic disorders now admitted in the psychiatry department did not cause severe COVID-19. They also confirm the previously reported association of elevated serum pro-inflammatory cytokines and HERV-W ENV in a subgroup of psychotic patients. In the context of the COVID-19 pandemic, this cluster is only found in SARS-CoV-2 seropositive PSD cases, suggesting a dominant influence of this virus on HERV-W ENV and cytokine expression, and/or patients' greater susceptibility to SARS-CoV-2 infection. Further investigation on an interplay between this viral infection and the clinical evolution of such PSD patients is needed. However, this repeatedly defined subgroup of psychotic patients with a pro-inflammatory phenotype and HERV expression calls for a differential therapeutic approach in psychoses, therefore for further precision medicine development.
Collapse
Affiliation(s)
- Ryad Tamouza
- AP-HP, Hôpital Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision (FHU ADAPT), Créteil, F-94010, France.
- Université Paris Est Créteil, INSERM U955, IMRB, Laboratoire Neuro-Psychiatrie translationnelle, F-94010, Créteil, France.
- Fondation FondaMental, Créteil, France.
| | - Urs Meyer
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland
- Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland
| | - Alexandre Lucas
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), We-Met Platform, Inserm UMR1297 and Université Paul Sabatier, Toulouse, France
| | - Jean Romain Richard
- Université Paris Est Créteil, INSERM U955, IMRB, Laboratoire Neuro-Psychiatrie translationnelle, F-94010, Créteil, France
| | - Irène Nkam
- AP-HP, Hôpital Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision (FHU ADAPT), Créteil, F-94010, France
| | - Armand Pinot
- AP-HP, Hôpital Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision (FHU ADAPT), Créteil, F-94010, France
| | - Ndilyam Djonouma
- AP-HP, Hôpital Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision (FHU ADAPT), Créteil, F-94010, France
| | - Wahid Boukouaci
- Université Paris Est Créteil, INSERM U955, IMRB, Laboratoire Neuro-Psychiatrie translationnelle, F-94010, Créteil, France
| | - Benjamin Charvet
- GeNeuro, 18, chemin des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
- Université de Lyon-UCBL, Lyon, France
| | - Justine Pierquin
- GeNeuro, 18, chemin des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
- Université de Lyon-UCBL, Lyon, France
| | - Joanna Brunel
- GeNeuro, 18, chemin des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
- Université de Lyon-UCBL, Lyon, France
| | - Slim Fourati
- Virology Unit, Department of Prevention, Diagnosis and Treatment of Infections, Hôpital Henri Mondor (AP-HP) and Institut Mondor de Recherche Biomédicale, INSERM U955, Université Paris-Est, Créteil, France
| | - Christophe Rodriguez
- Virology Unit, Department of Prevention, Diagnosis and Treatment of Infections, Hôpital Henri Mondor (AP-HP) and Institut Mondor de Recherche Biomédicale, INSERM U955, Université Paris-Est, Créteil, France
| | - Caroline Barau
- APHP, Hôpital Henri Mondor, Plateforme de Ressources Biologiques, F94010, Créteil, France
| | - Philippe Le Corvoisier
- Université Paris Est Créteil, Centre Investigation Clinique, CIC Henri Mondor, Créteil, F94010, France
| | - Kawtar El Abdellati
- CAPRI, University of Antwerp, Antwerp, Belgium
- University Psychiatric Centre, Duffel, Belgium
- ECNP Immuno-NeuroPsychiatry Network, Utrecht, The Netherlands
| | - Livia De Picker
- CAPRI, University of Antwerp, Antwerp, Belgium
- University Psychiatric Centre, Duffel, Belgium
- ECNP Immuno-NeuroPsychiatry Network, Utrecht, The Netherlands
| | - Hervé Perron
- GeNeuro, 18, chemin des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
- Université de Lyon-UCBL, Lyon, France
| | - Marion Leboyer
- AP-HP, Hôpital Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision (FHU ADAPT), Créteil, F-94010, France
- Université Paris Est Créteil, INSERM U955, IMRB, Laboratoire Neuro-Psychiatrie translationnelle, F-94010, Créteil, France
- Fondation FondaMental, Créteil, France
| |
Collapse
|
17
|
Petrone V, Fanelli M, Giudice M, Toschi N, Conti A, Maracchioni C, Iannetta M, Resta C, Cipriani C, Miele MT, Amati F, Andreoni M, Sarmati L, Rogliani P, Novelli G, Garaci E, Rasi G, Sinibaldi-Vallebona P, Minutolo A, Matteucci C, Balestrieri E, Grelli S. Expression profile of HERVs and inflammatory mediators detected in nasal mucosa as a predictive biomarker of COVID-19 severity. Front Microbiol 2023; 14:1155624. [PMID: 37283924 PMCID: PMC10239953 DOI: 10.3389/fmicb.2023.1155624] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/04/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction Our research group and others demonstrated the implication of the human endogenous retroviruses (HERVs) in SARS-CoV-2 infection and their association with disease progression, suggesting HERVs as contributing factors in COVID-19 immunopathology. To identify early predictive biomarkers of the COVID-19 severity, we analyzed the expression of HERVs and inflammatory mediators in SARS-CoV-2-positive and -negative nasopharyngeal/oropharyngeal swabs with respect to biochemical parameters and clinical outcome. Methods Residuals of swab samples (20 SARS-CoV-2-negative and 43 SARS-CoV-2-positive) were collected during the first wave of the pandemic and expression levels of HERVs and inflammatory mediators were analyzed by qRT-Real time PCR. Results The results obtained show that infection with SARS-CoV-2 resulted in a general increase in the expression of HERVs and mediators of the immune response. In particular, SARS-CoV-2 infection is associated with increased expression of HERV-K and HERV-W, IL-1β, IL-6, IL-17, TNF-α, MCP-1, INF-γ, TLR-3, and TLR-7, while lower levels of IL-10, IFN-α, IFN-β, and TLR-4 were found in individuals who underwent hospitalization. Moreover, higher expression of HERV-W, IL-1β, IL-6, IFN-α, and IFN-β reflected the respiratory outcome of patients during hospitalization. Interestingly, a machine learning model was able to classify hospitalized vs not hospitalized patients with good accuracy based on the expression levels of HERV-K, HERV-W, IL-6, TNF-a, TLR-3, TLR-7, and the N gene of SARS-CoV-2. These latest biomarkers also correlated with parameters of coagulation and inflammation. Discussion Overall, the present results suggest HERVs as contributing elements in COVID-19 and early genomic biomarkers to predict COVID-19 severity and disease outcome.
Collapse
Affiliation(s)
- Vita Petrone
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Marialaura Fanelli
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Martina Giudice
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Nicola Toschi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
- Martinos Center for Biomedical Imaging and Harvard Medical School, Boston, MA, United States
| | - Allegra Conti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | | | - Marco Iannetta
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Claudia Resta
- Respiratory Medicine Unit, Policlinic of Tor Vergata, Rome, Italy
| | - Chiara Cipriani
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Martino Tony Miele
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Francesca Amati
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Massimo Andreoni
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Loredana Sarmati
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Paola Rogliani
- Respiratory Medicine Unit, Policlinic of Tor Vergata, Rome, Italy
| | - Giuseppe Novelli
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
- Neuromed IRCCS Institute, Pozzilli, IS, Italy
- University of Nevada, Department of Pharmacology, Reno, NV, United States
| | | | - Guido Rasi
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Paola Sinibaldi-Vallebona
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
- National Research Council, Institute of Translational Pharmacology, Rome, Italy
| | - Antonella Minutolo
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Claudia Matteucci
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Emanuela Balestrieri
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Sandro Grelli
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
- Virology Unit, Policlinic of Tor Vergata, Rome, Italy
| |
Collapse
|
18
|
Charvet B, Brunel J, Pierquin J, Iampietro M, Decimo D, Queruel N, Lucas A, Encabo-Berzosa MDM, Arenaz I, Marmolejo TP, Gonzalez AI, Maldonado AC, Mathieu C, Küry P, Flores-Rivera J, Torres-Ruiz F, Avila-Rios S, Salgado Montes de Oca G, Schoorlemmer J, Perron H, Horvat B. SARS-CoV-2 awakens ancient retroviral genes and the expression of proinflammatory HERV-W envelope protein in COVID-19 patients. iScience 2023; 26:106604. [PMID: 37091988 PMCID: PMC10079620 DOI: 10.1016/j.isci.2023.106604] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/29/2023] [Accepted: 03/30/2023] [Indexed: 04/25/2023] Open
Abstract
Patients with COVID-19 may develop abnormal inflammatory response, followed in some cases by severe disease and long-lasting syndromes. We show here that in vitro exposure to SARS-CoV-2 activates the expression of the human endogenous retrovirus (HERV) HERV-W proinflammatory envelope protein (ENV) in peripheral blood mononuclear cells from a subset of healthy donors, in ACE2 receptor and infection-independent manner. Plasma and/or sera of 221 COVID-19 patients from different cohorts, infected with successive SARS-CoV-2 variants including the Omicron, had detectable HERV-W ENV, which correlated with ENV expression in T lymphocytes and peaked with the disease severity. HERV-W ENV was also found in postmortem tissues of lungs, heart, gastrointestinal tract, brain olfactory bulb, and nasal mucosa from COVID-19 patients. Altogether, these results demonstrate that SARS-CoV-2 could induce HERV-W envelope protein expression and suggest its involvement in the immunopathogenesis of certain COVID-19-associated syndromes and thereby its relevance in the development of personalized treatment of patients.
Collapse
Affiliation(s)
| | | | | | - Mathieu Iampietro
- CIRI, International Center for Infectiology Research, INSERM U1111, CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Didier Decimo
- CIRI, International Center for Infectiology Research, INSERM U1111, CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France
| | | | - Alexandre Lucas
- We-Met platform, I2MC/Inserm/Université Paul Sabatier UMR1297, Toulouse, France
| | | | - Izaskun Arenaz
- Biobanco del Sistema de Salud de Aragón, Instituto Aragonés de Ciencias de la Salud (IACS), Zaragoza, Spain
| | - Tania Perez Marmolejo
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, México Ciudad, México
| | - Arturo Ivan Gonzalez
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, México Ciudad, México
| | | | - Cyrille Mathieu
- CIRI, International Center for Infectiology Research, INSERM U1111, CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Patrick Küry
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Dusseldorf, Germany
| | - Jose Flores-Rivera
- Department of Neurology, National Institute of Neurology and Neurosurgery, Mexico City, Mexico
| | - Fernanda Torres-Ruiz
- Centro de investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México Ciudad, México
| | - Santiago Avila-Rios
- Centro de investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México Ciudad, México
| | - Gonzalo Salgado Montes de Oca
- Centro de investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México Ciudad, México
| | - Jon Schoorlemmer
- ARAID Fundación; Instituto Aragonés de Ciencias de la Salud (IACS); Grupo B46_20R de la DGA and GIIS-028 del IISA; all Zaragoza, Spain
| | - Hervé Perron
- GeNeuro Innovation, Lyon, France
- GeNeuro, Plan les Ouates, Geneva, Switzerland
| | - Branka Horvat
- CIRI, International Center for Infectiology Research, INSERM U1111, CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France
| |
Collapse
|
19
|
Klotz L, Antel J, Kuhlmann T. Inflammation in multiple sclerosis: consequences for remyelination and disease progression. Nat Rev Neurol 2023; 19:305-320. [PMID: 37059811 DOI: 10.1038/s41582-023-00801-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2023] [Indexed: 04/16/2023]
Abstract
Despite the large number of immunomodulatory or immunosuppressive treatments available to treat relapsing-remitting multiple sclerosis (MS), treatment of the progressive phase of the disease has not yet been achieved. This lack of successful treatment approaches is caused by our poor understanding of the mechanisms driving disease progression. Emerging concepts suggest that a combination of persisting focal and diffuse inflammation within the CNS and a gradual failure of compensatory mechanisms, including remyelination, result in disease progression. Therefore, promotion of remyelination presents a promising intervention approach. However, despite our increasing knowledge regarding the cellular and molecular mechanisms regulating remyelination in animal models, therapeutic increases in remyelination remain an unmet need in MS, which suggests that mechanisms of remyelination and remyelination failure differ fundamentally between humans and demyelinating animal models. New and emerging technologies now allow us to investigate the cellular and molecular mechanisms underlying remyelination failure in human tissue samples in an unprecedented way. The aim of this Review is to summarize our current knowledge regarding mechanisms of remyelination and remyelination failure in MS and in animal models of the disease, identify open questions, challenge existing concepts, and discuss strategies to overcome the translational roadblock in the field of remyelination-promoting therapies.
Collapse
Affiliation(s)
- Luisa Klotz
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Münster, Germany
| | - Jack Antel
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, Québec, Canada
| | - Tanja Kuhlmann
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, Québec, Canada.
- Institute of Neuropathology, University Hospital Münster, Münster, Germany.
| |
Collapse
|
20
|
Tovo PA, Marozio L, Abbona G, Calvi C, Frezet F, Gambarino S, Dini M, Benedetto C, Galliano I, Bergallo M. Pregnancy Is Associated with Impaired Transcription of Human Endogenous Retroviruses and of TRIM28 and SETDB1, Particularly in Mothers Affected by Multiple Sclerosis. Viruses 2023; 15:v15030710. [PMID: 36992419 PMCID: PMC10051116 DOI: 10.3390/v15030710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
Accumulating evidence highlights the pathogenetic role of human endogenous retroviruses (HERVs) in eliciting and maintaining multiple sclerosis (MS). Epigenetic mechanisms, such as those regulated by TRIM 28 and SETDB1, are implicated in HERV activation and in neuroinflammatory disorders, including MS. Pregnancy markedly improves the course of MS, but no study explored the expressions of HERVs and of TRIM28 and SETDB1 during gestation. Using a polymerase chain reaction real-time Taqman amplification assay, we assessed and compared the transcriptional levels of pol genes of HERV-H, HERV-K, HERV-W; of env genes of Syncytin (SYN)1, SYN2, and multiple sclerosis associated retrovirus (MSRV); and of TRIM28 and SETDB1 in peripheral blood and placenta from 20 mothers affected by MS; from 27 healthy mothers, in cord blood from their neonates; and in blood from healthy women of child-bearing age. The HERV mRNA levels were significantly lower in pregnant than in nonpregnant women. Expressions of all HERVs were downregulated in the chorion and in the decidua basalis of MS mothers compared to healthy mothers. The former also showed lower mRNA levels of HERV-K-pol and of SYN1, SYN2, and MSRV in peripheral blood. Significantly lower expressions of TRIM28 and SETDB1 also emerged in pregnant vs. nonpregnant women and in blood, chorion, and decidua of mothers with MS vs. healthy mothers. In contrast, HERV and TRIM28/SETDB1 expressions were comparable between their neonates. These results show that gestation is characterized by impaired expressions of HERVs and TRIM28/SETDB1, particularly in mothers with MS. Given the beneficial effects of pregnancy on MS and the wealth of data suggesting the putative contribution of HERVs and epigenetic processes in the pathogenesis of the disease, our findings may further support innovative therapeutic interventions to block HERV activation and to control aberrant epigenetic pathways in MS-affected patients.
Collapse
Affiliation(s)
- Pier-Angelo Tovo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Correspondence: (P.-A.T.); (M.B.)
| | - Luca Marozio
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Giancarlo Abbona
- Pathology Unit, Department Laboratory Medicine, AOU Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Cristina Calvi
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Federica Frezet
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Stefano Gambarino
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Maddalena Dini
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Chiara Benedetto
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Ilaria Galliano
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Massimiliano Bergallo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Correspondence: (P.-A.T.); (M.B.)
| |
Collapse
|
21
|
Jin X, Li X, Guan F, Zhang J. Human Endogenous Retroviruses and Toll-Like Receptors. Viral Immunol 2023; 36:73-82. [PMID: 36251943 DOI: 10.1089/vim.2022.0090] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Human endogenous retroviruses (HERVs) are estimated to comprise ∼8% of the entire human genome, but the vast majority of them remain transcriptionally silent in most normal tissues due to accumulated mutations. However, HERVs can be frequently activated and detected in various tissues under certain conditions. Nucleic acids or proteins produced by HERVs can bind to pattern recognition receptors of immune cells or other cells and initiate an innate immune response, which may be involved in some pathogenesis of diseases, especially cancer and autoimmune diseases. In this review, we collect studies of the interaction between HERV elements and Toll-like receptors and attempt to provide an overview of their role in the immunopathological mechanisms of inflammatory and autoimmune diseases.
Collapse
Affiliation(s)
- Xinyi Jin
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Xueyuan Li
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Fang Guan
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| | - Jianhua Zhang
- Department of Laboratory Medicine, School of Medicine, Shaoxing University, Shaoxing, P.R. China
| |
Collapse
|
22
|
Tovo PA, Garazzino S, Savino F, Daprà V, Pruccoli G, Dini M, Filisetti G, Funiciello E, Galliano I, Bergallo M. Expressions of Type I and III Interferons, Endogenous Retroviruses, TRIM28, and SETDB1 in Children with Respiratory Syncytial Virus Bronchiolitis. Curr Issues Mol Biol 2023; 45:1197-1217. [PMID: 36826024 PMCID: PMC9954910 DOI: 10.3390/cimb45020079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/24/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Interferons (IFNs) and IFN-stimulated genes (ISGs) play essential roles for the control of viral infections. Their expression in infants with respiratory syncytial virus (RSV) bronchiolitis is poorly defined. Human endogenous retroviruses (HERVs) represent 8% of our genome and modulate inflammatory and immune reactions. TRIM28 and SETDB1 participate in the epigenetic regulation of genes involved in the immune response, including IFNs and HERVs. No study has explored the expression of HERVs, TRIM28, and SETDB1 during RSV bronchiolitis. We assessed, through a PCR real-time Taqman amplification assay, the transcription levels of six IFN-I ISGs, four IFNλs, the pol genes of HERV-H, -K, and -W families, the env genes of Syncytin (SYN)1 and SYN2, and of TRIM28/SETDB1 in whole blood from 37 children hospitalized for severe RSV bronchiolitis and in healthy children (HC). The expression of most IFN-I ISGs was significantly higher in RSV+ patients than in age-matched HC, but it was inhibited by steroid therapy. The mRNA concentrations of IFN-λs were comparable between patients and age-matched HC. This lack of RSV-driven IFN-III activation may result in the defective protection of the airway mucosal surface leading to severe bronchiolitis. The expression of IFN-III showed a positive correlation with age in HC, that could account for the high susceptibility of young children to viral respiratory tract infections. The transcription levels of every HERV gene were significantly lower in RSV+ patients than in HC, while the expressions of TRIM28/SETDB1 were overlapping. Given the negative impact of HERVs and the positive effects of TRIM28/SETDB1 on innate and adaptive immune responses, the downregulation of the former and the normal expression of the latter may contribute to preserving immune functions against infection.
Collapse
Affiliation(s)
- Pier-Angelo Tovo
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Correspondence: Correspondence: (P.-A.T.); (M.B.)
| | - Silvia Garazzino
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy
| | - Francesco Savino
- Early Infancy Special Care Unit, Department of Pediatric Care, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy
| | - Valentina Daprà
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
| | - Giulia Pruccoli
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy
| | - Maddalena Dini
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
| | - Giacomo Filisetti
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Early Infancy Special Care Unit, Department of Pediatric Care, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy
| | - Elisa Funiciello
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy
| | - Ilaria Galliano
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
| | - Massimiliano Bergallo
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy
- Correspondence: Correspondence: (P.-A.T.); (M.B.)
| |
Collapse
|
23
|
Dhillon P, Mulholland KA, Hu H, Park J, Sheng X, Abedini A, Liu H, Vassalotti A, Wu J, Susztak K. Increased levels of endogenous retroviruses trigger fibroinflammation and play a role in kidney disease development. Nat Commun 2023; 14:559. [PMID: 36732547 PMCID: PMC9895454 DOI: 10.1038/s41467-023-36212-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023] Open
Abstract
Inflammation is a common feature of all forms of chronic kidney disease; however, the underlying mechanism remains poorly understood. Evolutionarily inherited endogenous retroviruses (ERVs) have the potential to trigger an immune reaction. Comprehensive RNA-sequencing of control and diseased kidneys from human and mouse disease models indicated higher expression of transposable elements (TEs) and ERVs in diseased kidneys. Loss of cytosine methylation causing epigenetic derepression likely contributes to an increase in ERV levels. Genetic deletion/pharmacological inhibition of DNA methyltransferase 1 (DNMT1) induces ERV expression. In cultured kidney tubule cells, ERVs elicit the activation of cytosolic nucleotide sensors such as RIG-I, MDA5, and STING. ERVs expressions in kidney tubules trigger RIG-I/STING, and cytokine expression, and correlate with the presence of immune cells. Genetic deletion of RIG-I or STING or treatment with reverse transcriptase inhibitor ameliorates kidney fibroinflammation. Our data indicate an important role of epigenetic derepression-induced ERV activation triggering renal fibroinflammation.
Collapse
Affiliation(s)
- Poonam Dhillon
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Kelly Ann Mulholland
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Hailong Hu
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Jihwan Park
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Xin Sheng
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Amin Abedini
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Hongbo Liu
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Allison Vassalotti
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Junnan Wu
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA
| | - Katalin Susztak
- Renal, Electrolyte, and Hypertension Division, Department of Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA.
- Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA.
- Department of Genetics, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, 19014, USA.
| |
Collapse
|
24
|
Endogenous Retroviruses as Modulators of Innate Immunity. Pathogens 2023; 12:pathogens12020162. [PMID: 36839434 PMCID: PMC9963469 DOI: 10.3390/pathogens12020162] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Endogenous retroviruses (ERVs), or LTR retrotransposons, are a class of transposable elements that are highly represented in mammalian genomes. Human ERVs (HERVs) make up roughly 8.3% of the genome and over the course of evolution, HERV elements underwent positive selection and accrued mutations that rendered them non-infectious; thereby, the genome could co-opt them into constructive roles with important biological functions. In the past two decades, with the help of advances in sequencing technology, ERVs are increasingly considered to be important components of the innate immune response. While typically silenced, expression of HERVs can be induced in response to traumatic, toxic, or infection-related stress, leading to a buildup of viral transcripts and under certain circumstances, proteins, including functionally active reverse transcriptase and viral envelopes. The biological activity of HERVs in the context of the innate immune response can be based on the functional effect of four major viral components: (1) HERV LTRs, (2) HERV-derived RNAs, (3) HERV-derived RNA:DNA duplexes and cDNA, and (4) HERV-derived proteins and ribonucleoprotein complexes. In this review, we will discuss the implications of HERVs in all four contexts in relation to innate immunity and their association with various pathological disease states.
Collapse
|
25
|
Herrero F, Mueller FS, Gruchot J, Küry P, Weber-Stadlbauer U, Meyer U. Susceptibility and resilience to maternal immune activation are associated with differential expression of endogenous retroviral elements. Brain Behav Immun 2023; 107:201-214. [PMID: 36243285 DOI: 10.1016/j.bbi.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/26/2022] [Accepted: 10/09/2022] [Indexed: 12/05/2022] Open
Abstract
Endogenous retroviruses (ERVs) are ancestorial retroviral elements that were integrated into the mammalian genome through germline infections and insertions during evolution. While increased ERV expression has been repeatedly implicated in psychiatric and neurodevelopmental disorders, recent evidence suggests that aberrant endogenous retroviral activity may contribute to biologically defined subgroups of psychotic disorders with persisting immunological dysfunctions. Here, we explored whether ERV expression is altered in a mouse model of maternal immune activation (MIA), a transdiagnostic environmental risk factor of psychiatric and neurodevelopmental disorders. MIA was induced by maternal administration of poly(I:C) on gestation day 12 in C57BL/6N mice. Murine ERV transcripts were quantified in the placentae and fetal brains shortly after poly(I:C)-induced MIA, as well as in adult offspring that were stratified according to their behavioral profiles. We found that MIA increased and reduced levels of class II ERVs and syncytins, respectively, in placentae and fetal brain tissue. We also revealed abnormal ERV expression in MIA-exposed offspring depending on whether they displayed overt behavioral anomalies or not. Taken together, our findings provide a proof of concept that an inflammatory stimulus, even when initiated in prenatal life, has the potential of altering ERV expression across fetal to adult stages of development. Moreover, our data highlight that susceptibility and resilience to MIA are associated with differential ERV expression, suggesting that early-life exposure to inflammatory factors may play a role in determining disease susceptibility by inducing persistent alterations in the expression of endogenous retroviral elements.
Collapse
Affiliation(s)
- Felisa Herrero
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland
| | - Flavia S Mueller
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland
| | - Joel Gruchot
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Patrick Küry
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Ulrike Weber-Stadlbauer
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland
| | - Urs Meyer
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland.
| |
Collapse
|
26
|
Interplay between activation of endogenous retroviruses and inflammation as common pathogenic mechanism in neurological and psychiatric disorders. Brain Behav Immun 2023; 107:242-252. [PMID: 36270439 DOI: 10.1016/j.bbi.2022.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/21/2022] [Accepted: 10/13/2022] [Indexed: 12/05/2022] Open
Abstract
Human endogenous retroviruses (ERVs) are ancestorial retroviral elements that were integrated into our genome through germline infections and insertions during evolution. They have repeatedly been implicated in the aetiology and pathophysiology of numerous human disorders, particularly in those that affect the central nervous system. In addition to the known association of ERVs with multiple sclerosis and amyotrophic lateral sclerosis, a growing number of studies links the induction and expression of these retroviral elements with the onset and severity of neurodevelopmental and psychiatric disorders. Although these disorders differ in terms of overall disease pathology and causalities, a certain degree of (subclinical) chronic inflammation can be identified in all of them. Based on these commonalities, we discuss the bidirectional relationship between ERV expression and inflammation and highlight that numerous entry points to this reciprocal sequence of events exist, including initial infections with ERV-activating pathogens, exposure to non-infectious inflammatory stimuli, and conditions in which epigenetic silencing of ERV elements is disrupted.
Collapse
|
27
|
Rangel SC, da Silva MD, da Silva AL, dos Santos JDMB, Neves LM, Pedrosa A, Rodrigues FM, Trettel CDS, Furtado GE, de Barros MP, Bachi ALL, Romano CM, Nali LHDS. Human endogenous retroviruses and the inflammatory response: A vicious circle associated with health and illness. Front Immunol 2022; 13:1057791. [PMID: 36518758 PMCID: PMC9744114 DOI: 10.3389/fimmu.2022.1057791] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 10/31/2022] [Indexed: 11/24/2022] Open
Abstract
Human Endogenous Retroviruses (HERVs) are derived from ancient exogenous retroviral infections that have infected our ancestors' germline cells, underwent endogenization process, and were passed throughout the generations by retrotransposition and hereditary transmission. HERVs comprise 8% of the human genome and are critical for several physiological activities. Yet, HERVs reactivation is involved in pathological process as cancer and autoimmune diseases. In this review, we summarize the multiple aspects of HERVs' role within the human genome, as well as virological and molecular aspects, and their fusogenic property. We also discuss possibilities of how the HERVs are possibly transactivated and participate in modulating the inflammatory response in health conditions. An update on their role in several autoimmune, inflammatory, and aging-related diseases is also presented.
Collapse
Affiliation(s)
- Sara Coelho Rangel
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | | | - Amanda Lopes da Silva
- Laboratório de Virologia, Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, Brazil
| | | | - Lucas Melo Neves
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | - Ana Pedrosa
- CNC-Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, (3004-504), Coimbra, Portugal
| | | | - Caio dos Santos Trettel
- Interdisciplinary Program in Health Sciences, Institute of Physical Activity Sciences and Sports (ICAFE), Cruzeiro do Sul University, São Paulo, Brazil
| | - Guilherme Eustáquio Furtado
- Polytechnic Institute of Coimbra, Applied Research Institute, Rua da Misericórdia, Lagar dos Cortiços – S. Martinho do Bispo, Coimbra, Portugal
| | - Marcelo Paes de Barros
- Interdisciplinary Program in Health Sciences, Institute of Physical Activity Sciences and Sports (ICAFE), Cruzeiro do Sul University, São Paulo, Brazil
| | - André Luis Lacerda Bachi
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil
| | - Camila Malta Romano
- Laboratório de Virologia, Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, Brazil,Hospital das Clínicas HCFMUSP (LIM52), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Luiz Henrique Da Silva Nali
- UNISA Research Center, Universidade Santo Amaro, Post-Graduation in Health Sciences, São Paulo, Brazil,*Correspondence: Luiz Henrique Da Silva Nali, ;
| |
Collapse
|
28
|
Giménez-Orenga K, Pierquin J, Brunel J, Charvet B, Martín-Martínez E, Perron H, Oltra E. HERV-W ENV antigenemia and correlation of increased anti-SARS-CoV-2 immunoglobulin levels with post-COVID-19 symptoms. Front Immunol 2022; 13:1020064. [PMID: 36389746 PMCID: PMC9647063 DOI: 10.3389/fimmu.2022.1020064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/14/2022] [Indexed: 08/02/2023] Open
Abstract
Due to the wide scope and persistence of COVID-19´s pandemic, post-COVID-19 condition represents a post-viral syndrome of unprecedented dimensions. SARS-CoV-2, in line with other infectious agents, has the capacity to activate dormant human endogenous retroviral sequences ancestrally integrated in human genomes (HERVs). This activation was shown to relate to aggravated COVID-19 patient´s symptom severity. Despite our limited understanding of how HERVs are turned off upon infection clearance, or how HERVs mediate long-term effects when their transcription remains aberrantly on, the participation of these elements in neurologic disease, such as multiple sclerosis, is already settling the basis for effective therapeutic solutions. These observations support an urgent need to identify the mechanisms that lead to HERV expression with SARS-CoV-2 infection, on the one hand, and to answer whether persistent HERV expression exists in post-COVID-19 condition, on the other. The present study shows, for the first time, that the HERV-W ENV protein can still be actively expressed long after SARS-CoV-2 infection is resolved in post-COVID-19 condition patients. Moreover, increased anti-SARS-CoV-2 immunoglobulins in post-COVID-19 condition, particularly high anti-SARS-CoV-2 immunoglobulin levels of the E isotype (IgE), seem to strongly correlate with deteriorated patient physical function (r=-0.8057, p<0.01). These results indicate that HERV-W ENV antigenemia and anti-SARS-CoV-2 IgE serology should be further studied to better characterize post-COVID-19 condition pathogenic drivers potentially differing in subsets of patients with various symptoms. They also point out that such biomarkers may serve to design therapeutic options for precision medicine in post-COVID-19 condition.
Collapse
Affiliation(s)
- Karen Giménez-Orenga
- Escuela de Doctorado, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | | | | | | | | | - Hervé Perron
- Geneuro-Innovation, Bioparc Laënnec, Lyon, France
- GeNeuro, Geneva, Switzerland
| | - Elisa Oltra
- Department of Pathology, School of Health Sciences, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
- Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| |
Collapse
|
29
|
Zhang Q, Pan J, Cong Y, Mao J. Transcriptional Regulation of Endogenous Retroviruses and Their Misregulation in Human Diseases. Int J Mol Sci 2022; 23:ijms231710112. [PMID: 36077510 PMCID: PMC9456331 DOI: 10.3390/ijms231710112] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/28/2022] [Accepted: 09/01/2022] [Indexed: 11/22/2022] Open
Abstract
Endogenous retroviruses (ERVs), deriving from exogenous retroviral infections of germ line cells occurred millions of years ago, represent ~8% of human genome. Most ERVs are highly inactivated because of the accumulation of mutations, insertions, deletions, and/or truncations. However, it is becoming increasingly apparent that ERVs influence host biology through genetic and epigenetic mechanisms under particular physiological and pathological conditions, which provide both beneficial and deleterious effects for the host. For instance, certain ERVs expression is essential for human embryonic development. Whereas abnormal activation of ERVs was found to be involved in numbers of human diseases, such as cancer and neurodegenerative diseases. Therefore, understanding the mechanisms of regulation of ERVs would provide insights into the role of ERVs in health and diseases. Here, we provide an overview of mechanisms of transcriptional regulation of ERVs and their dysregulation in human diseases.
Collapse
|
30
|
Ilse V, Scholz R, Wermann M, Naumann M, Staege MS, Roßner S, Cynis H. Immunogenicity of the Envelope Surface Unit of Human Endogenous Retrovirus K18 in Mice. Int J Mol Sci 2022; 23:ijms23158330. [PMID: 35955468 PMCID: PMC9369184 DOI: 10.3390/ijms23158330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 02/06/2023] Open
Abstract
The triggers for the development of multiple sclerosis (MS) have not been fully understood to date. One hypothesis proposes a viral etiology. Interestingly, viral proteins from human endogenous retroviruses (HERVs) may play a role in the pathogenesis of MS. Allelic variants of the HERV-K18 env gene represent a genetic risk factor for MS, and the envelope protein is considered to be an Epstein–Barr virus-trans-activated superantigen. To further specify a possible role for HERV-K18 in MS, the present study examined the immunogenicity of the purified surface unit (SU). HERV-K18(SU) induced envelope-specific plasma IgG in immunized mice and triggered proliferation of T cells isolated from these mice. It did not trigger phenotypic changes in a mouse model of experimental autoimmune encephalomyelitis. Further studies are needed to investigate the underlying mechanisms of HERV-K18 interaction with immune system regulators in more detail.
Collapse
Affiliation(s)
- Victoria Ilse
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, Weinbergweg 22, 06120 Halle, Germany; (V.I.); (R.S.); (M.W.); (M.N.)
| | - Rebekka Scholz
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, Weinbergweg 22, 06120 Halle, Germany; (V.I.); (R.S.); (M.W.); (M.N.)
| | - Michael Wermann
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, Weinbergweg 22, 06120 Halle, Germany; (V.I.); (R.S.); (M.W.); (M.N.)
| | - Marcel Naumann
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, Weinbergweg 22, 06120 Halle, Germany; (V.I.); (R.S.); (M.W.); (M.N.)
| | - Martin S. Staege
- Department of Surgical and Conservative Pediatrics and Adolescent Medicine, Medical Faculty, Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle, Germany;
| | - Steffen Roßner
- Paul Flechsig Institute for Brain Research, Leipzig University, Liebigstraße 19, 04103 Leipzig, Germany;
| | - Holger Cynis
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, Weinbergweg 22, 06120 Halle, Germany; (V.I.); (R.S.); (M.W.); (M.N.)
- Correspondence: ; Tel.: +49-345-13142835; Fax: +49-345-13142801
| |
Collapse
|
31
|
Liu H, Bergant V, Frishman G, Ruepp A, Pichlmair A, Vincendeau M, Frishman D. Influenza A Virus Infection Reactivates Human Endogenous Retroviruses Associated with Modulation of Antiviral Immunity. Viruses 2022; 14:v14071591. [PMID: 35891571 PMCID: PMC9320126 DOI: 10.3390/v14071591] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 02/06/2023] Open
Abstract
Human endogenous retrovirus (HERVs), normally silenced by methylation or mutations, can be reactivated by multiple environmental factors, including infections with exogenous viruses. In this work, we investigated the transcriptional activity of HERVs in human A549 cells infected by two wild-type (PR8M, SC35M) and one mutated (SC35MΔNS1) strains of Influenza A virus (IAVs). We found that the majority of differentially expressed HERVs (DEHERVS) and genes (DEGs) were up-regulated in the infected cells, with the most significantly enriched biological processes associated with the genes differentially expressed exclusively in SC35MΔNS1 being linked to the immune system. Most DEHERVs in PR8M and SC35M are mammalian apparent LTR retrotransposons, while in SC35MΔNS1, more HERV loci from the HERVW9 group were differentially expressed. Furthermore, up-regulated pairs of HERVs and genes in close chromosomal proximity to each other tended to be associated with immune responses, which implies that specific HERV groups might have the potential to trigger specific gene networks and influence host immunological pathways.
Collapse
Affiliation(s)
- Hengyuan Liu
- Department of Bioinformatics, Technical University of Munich, 85354 Freising, Germany;
| | - Valter Bergant
- Institute of Virology, School of Medicine, Technical University of Munich (TUM), 81675 Munich, Germany; (V.B.); (A.P.)
| | - Goar Frishman
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (G.F.); (A.R.)
| | - Andreas Ruepp
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (G.F.); (A.R.)
| | - Andreas Pichlmair
- Institute of Virology, School of Medicine, Technical University of Munich (TUM), 81675 Munich, Germany; (V.B.); (A.P.)
- German Center for Infection Research (DZIF), Munich Partner Site, 81675 Munich, Germany
| | - Michelle Vincendeau
- Research Group Endogenous Retroviruses, Institute of Virology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
- Correspondence: (M.V.); (D.F.)
| | - Dmitrij Frishman
- Department of Bioinformatics, Technical University of Munich, 85354 Freising, Germany;
- Correspondence: (M.V.); (D.F.)
| |
Collapse
|
32
|
BERGALLO M, LOIACONO E, GALLIANO I, MONTANARI P, PERUZZI L, TOVO PA, COPPO R. HERV-K and W expression in peripheral mononuclear cells of children with Henoch-Schönlein purpura and relation with TLR activation. Minerva Pediatr (Torino) 2022; 74:421-427. [DOI: 10.23736/s2724-5276.17.04717-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
33
|
Oh J, Bar-Or A. Emerging therapies to target CNS pathophysiology in multiple sclerosis. Nat Rev Neurol 2022; 18:466-475. [PMID: 35697862 DOI: 10.1038/s41582-022-00675-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2022] [Indexed: 12/13/2022]
Abstract
The rapidly evolving therapeutic landscape of multiple sclerosis (MS) has contributed to paradigm shifts in our understanding of the biological mechanisms that contribute to CNS injury and in treatment philosophies. Opportunities remain to further improve treatment of relapsing-remitting MS, but two major therapeutic gaps are the limiting of progressive disease mechanisms and the repair of CNS injury. In this Review, we provide an overview of selected emerging therapies that predominantly target processes within the CNS that are thought to be involved in limiting non-relapsing, progressive disease injury or promoting tissue repair. Among these, we consider agents that modulate adaptive and innate CNS-compartmentalized inflammation, which can be mediated by infiltrating immune cells and/or resident CNS cells, including microglia and astrocytes. We also discuss agents that target degenerative disease mechanisms, agents that might confer neuroprotection, and agents that create a more favourable environment for or actively contribute to oligodendrocyte precursor cell differentiation, remyelination and axonal regeneration. We focus on agents that are novel for MS, that are known to or are presumed to penetrate the CNS, and that have already entered early stages of development in MS clinical trials.
Collapse
Affiliation(s)
- Jiwon Oh
- Division of Neurology, Department of Medicine, St. Michael's Hospital, University of Toronto, Ontario, Canada.,Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
| | - Amit Bar-Or
- Center for Neuroinflammation and Experimental Therapeutics, and Multiple Sclerosis Division, Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| |
Collapse
|
34
|
Enhanced Expression of Human Endogenous Retroviruses, TRIM28 and SETDB1 in Autism Spectrum Disorder. Int J Mol Sci 2022; 23:ijms23115964. [PMID: 35682642 PMCID: PMC9180946 DOI: 10.3390/ijms23115964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/12/2022] [Accepted: 05/23/2022] [Indexed: 02/01/2023] Open
Abstract
Human endogenous retroviruses (HERVs) are relics of ancestral infections and represent 8% of the human genome. They are no longer infectious, but their activation has been associated with several disorders, including neuropsychiatric conditions. Enhanced expression of HERV-K and HERV-H envelope genes has been found in the blood of autism spectrum disorder (ASD) patients, but no information is available on syncytin 1 (SYN1), SYN2, and multiple sclerosis-associated retrovirus (MSRV), which are thought to be implicated in brain development and immune responses. HERV activation is regulated by TRIM28 and SETDB1, which are part of the epigenetic mechanisms that organize the chromatin architecture in response to external stimuli and are involved in neural cell differentiation and brain inflammation. We assessed, through a PCR realtime Taqman amplification assay, the transcription levels of pol genes of HERV-H, -K, and -W families, of env genes of SYN1, SYN2, and MSRV, as well as of TRIM28 and SETDB1 in the blood of 33 ASD children (28 males, median 3.8 years, 25–75% interquartile range 3.0–6.0 y) and healthy controls (HC). Significantly higher expressions of TRIM28 and SETDB1, as well as of all the HERV genes tested, except for HERV-W-pol, were found in ASD, as compared with HC. Positive correlations were observed between the mRNA levels of TRIM28 or SETDB1 and every HERV gene in ASD patients, but not in HC. Overexpression of TRIM28/SETDB1 and several HERVs in children with ASD and the positive correlations between their transcriptional levels suggest that these may be main players in pathogenetic mechanisms leading to ASD.
Collapse
|
35
|
Tovo P, Monti G, Daprà V, Montanari P, Calvi C, Alliaudi C, Sardo A, Galliano I, Bergallo M. Enhanced expression of endogenous retroviruses and of TRIM28 and SETDB1 in children with food allergy. Clin Transl Allergy 2022; 12:e12124. [PMID: 35344298 PMCID: PMC8967271 DOI: 10.1002/clt2.12124] [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] [Received: 07/21/2021] [Revised: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 11/20/2022] Open
Abstract
Background Human endogenous retroviruses (HERVs) represent 8% of our genome. They originate from ancestral infections and although no longer contagious they can regulate transcription of adjacent cellular genes, produce viral RNAs sensed as non‐self by pattern recognition receptors, and encode viral proteins, such as Syncytin (SYN) 1 and 2, that exhibit potent immunomodulatory properties. Based on this, HERVs have been studied and proposed as relevant cofactors in several chronic inflammatory and immune‐mediated diseases. HERV transcription is regulated by host TRIM28 and SET domain bifurcated histone lysine methyltransferase 1 (SETDB1), which in turn exert crucial regulatory functions on the host immune system. No studies explored the expression of HERVs, TRIM28, and SETDB1 in allergic patients. Methods We assessed, through a polymerase chain reaction real time Taqman amplification assay, the transcription levels of pol genes of HERV‐H, HERV‐K, HERV‐W, and of env genes of SYN1 and SYN2, as well as of TRIM28 and SETDB1 in whole blood from 32 children with IgE‐mediated food allergy, 19 with food protein‐induced enterocolitis syndrome (FPIES), and in healthy control children. Results The expression levels of pol genes of HERV‐H, ‐K, and ‐W were significantly enhanced in patients with IgE‐mediated FA or FPIES as compared to control subjects, while the mRNA concentrations of SYN1 and SYN2 were comparable in each group of children. Both TRIM28 and SETDB1 mRNA levels were significantly higher in allergic patients. Conclusions Given the influence of HERVs and of TRIM28 and SETDB1 on innate and adaptive immune responses, their transcriptional activation in children with food allergies suggest that they might play important roles in the development of these diseases.
Collapse
Affiliation(s)
- Pier‐Angelo Tovo
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Giovanna Monti
- Pediatric Allergy Unit Regina Margherita Children's Hospital Turin Italy
| | - Valentina Daprà
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Paola Montanari
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Cristina Calvi
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Carla Alliaudi
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Allegra Sardo
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Ilaria Galliano
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| | - Massimiliano Bergallo
- Department of Pediatric Sciences and Public Health University of Turin Turin Italy
- Pediatric Laboratory Department of Pediatric Sciences and Public Health University of Turin Turin Italy
| |
Collapse
|
36
|
Durnaoglu S, Lee SK, Ahnn J. Syncytin, envelope protein of human endogenous retrovirus (HERV): no longer 'fossil' in human genome. Anim Cells Syst (Seoul) 2022; 25:358-368. [PMID: 35059135 PMCID: PMC8765258 DOI: 10.1080/19768354.2021.2019109] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 12/17/2022] Open
Abstract
Human endogenous retroviruses (HERVs) are 'fossil viruses' that resulted from stable integrations of exogenous retroviruses throughout evolution. HERVs are defective and do not produce infectious viral particles. However, some HERVs retain a limited coding capacity and produce retroviral transcripts and proteins, which function in human developmental process and various pathologies, including many cancers and neurological diseases. Recently, it has been reported that HERVs are differently expressed in COVID-19 disease caused by infection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In this review, we discuss the molecular structure and function of HERV ENV proteins, particularly syncytins, and their conventional roles in human development and diseases, and potential involvement in COVID-19 regarding the newly reported mental symptoms. We also address COVID-19 vaccine-related infertility concerns arising from the similarity of syncytin with the spike protein of SARS-CoV-2, which have been proved invalid.
Collapse
Affiliation(s)
- Serpen Durnaoglu
- College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
- Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Sun-Kyung Lee
- College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
- Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Joohong Ahnn
- College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
- Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, Republic of Korea
| |
Collapse
|
37
|
Latifi T, Zebardast A, Marashi SM. The role of human endogenous retroviruses (HERVs) in Multiple Sclerosis and the plausible interplay between HERVs, Epstein-Barr virus infection, and vitamin D. Mult Scler Relat Disord 2022; 57:103318. [PMID: 35158423 DOI: 10.1016/j.msard.2021.103318] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/19/2021] [Accepted: 10/06/2021] [Indexed: 12/30/2022]
Abstract
Multiple Sclerosis (MS) is one of the chronic inflammatory diseases with neurological disability in the central nervous system (CNS). Although the exact cause of MS is still largely unknown, both genetic and environmental factors are thought to play a role in disease risk. Human Endogenous Retroviruses (HERVs) are endogenous viral elements of the human genome whose expression is associated with MS. HERVs are normally silenced or expressed at low levels, although their expression is higher in MS than in the healthy population. Several studies highlighted the plausible interaction between HERVs and other MS risk factors, including viral infection like Epstein-Barr viruses and vitamin D deficiency which may lead to high expression of HERVs in these patients. Understanding how HERVs act in this scenario can improve our understanding towards MS etiology and may lead to the development of antiretroviral therapies in these patients. Here in this review, we try to examine the different HERVs expression implicated in MS and their association with EBV infection and vitamin D status.
Collapse
Affiliation(s)
- Tayebeh Latifi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Arghavan Zebardast
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Sayed Mahdi Marashi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
38
|
Qiao S, Sun QY, Zhang SC, Zhang RR, Wu YJ, Wang ZH, Liu XW. Role of Increased Syncytin-1 Expression in Pathogenesis of Anti-N-Methyl-d-Aspartate Receptor Encephalitis. Neuropsychiatr Dis Treat 2022; 18:1535-1543. [PMID: 35937712 PMCID: PMC9346417 DOI: 10.2147/ndt.s374798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/21/2022] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Syncytin-1 may play a role in several neuropsychiatric disorders, but its function in anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is unknown. The purpose of this study was to examine the possible mechanism of action of syncytin-1 in patients with anti-NMDAR encephalitis. PATIENTS AND METHODS Twenty patients with anti-NMDAR encephalitis and eight controls were recruited. The protein levels of syncytin-1 in serum were determined using an enzyme-linked immunosorbent assay, and the transcript levels of syncytin-1 were determined using real-time quantitative PCR. Flow cytometry was used for peripheral blood lymphocyte subset detection. Further, the relationship between syncytin-1 levels and clinical features of anti-NMDAR encephalitis and peripheral blood lymphocyte subsets was analyzed. RESULTS Compared with those in controls, higher syncytin-1 levels and percentage of B cells (CD3-CD19+) were observed in patients with anti-NMDAR encephalitis. Among anti-NMDAR encephalitis patients, the level of syncytin-1 positively correlated with the proportion of B cells and modified Rankin scale score at onset and after immunotherapy and negatively correlated with the proportion of CD3+ T cells. CONCLUSION An increased expression of Syncytin-1 is associated with the pathogenesis of anti-NMDAR encephalitis, providing evidence for elucidating the pathogenesis of the disease and suggesting novel therapeutic targets. Further, this study clarifies the role of syncytin-1 in neuroimmune disorders.
Collapse
Affiliation(s)
- Shan Qiao
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, People's Republic of China.,Department of Medical Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Quan-Ye Sun
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, People's Republic of China
| | - Shan-Chao Zhang
- Department of Neurology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, People's Republic of China
| | - Ran-Ran Zhang
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, People's Republic of China
| | - Yu-Jiao Wu
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, People's Republic of China
| | - Zhi-Hao Wang
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, People's Republic of China
| | - Xue-Wu Liu
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, People's Republic of China.,Institute of Epilepsy, Shandong University, Jinan, People's Republic of China
| |
Collapse
|
39
|
Ko EJ, Cha HJ. The Roles of Human Endogenous Retroviruses (HERVs) in Inflammation. KOSIN MEDICAL JOURNAL 2021. [DOI: 10.7180/kmj.2021.36.2.69] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Human endogenous retroviruses (HERVs) are ancient, currently inactive, and non-infectious due to recombination, deletions, and mutations in the host genome. However, HERV-derived elements are involved in physiological phenomena including inflammatory response. In recent studies, HERV-derived elements were involved directly in various inflammatory diseases including autoimmune diseases such as rheumatoid arthritis (RA), multiple sclerosis, amyotrophic lateral sclerosis (ALS), and Sjogren’s syndrome. Regarding the involvement of HERV-derived elements in inflammation, two possible mechanisms have been proposed. First, HERV-derived elements cause nonspecific innate immune processes. Second, HERV-derived RNA or proteins might stimulate selective signaling mechanisms. However, it is unknown how silent HERV elements are activated in the inflammatory response and what factors and signaling mechanisms are involved with HERV-derived elements. In this review, we introduce HERV-related autoimmune diseases and propose the possible action mechanisms of HERV-derived elements in the inflammatory response at the molecular level.
Collapse
|
40
|
Posso-Osorio I, Tobón GJ, Cañas CA. Human endogenous retroviruses (HERV) and non-HERV viruses incorporated into the human genome and their role in the development of autoimmune diseases. J Transl Autoimmun 2021; 4:100137. [PMID: 34917914 PMCID: PMC8669383 DOI: 10.1016/j.jtauto.2021.100137] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/18/2021] [Accepted: 12/08/2021] [Indexed: 12/12/2022] Open
Abstract
Genomic incorporation of viruses as human endogenous retroviruses (HERVs) are components of our genome that possibly originated by incorporating ancestral of exogenous viruses. Their roles in the evolution of the human genome, gene expression, and the pathogenesis of autoimmune diseases (ADs) and neoplastic phenomena are the subject of intense research. This review analyzes the evolutionary and virological aspects of HERVs and other viruses that incorporate their genome into the human genome and have known role in the genesis of ADs. These insights are helpful to understand further the possible role in autoimmunity genesis of HERVs, other ancestral viruses no HERVs and modern viruses with the ability to incorporate into the human genome or interact with HERVs.
Collapse
Affiliation(s)
- Iván Posso-Osorio
- CIRAT: Centro de Investigación en Reumatología, Autoinmunidad y Medicina Traslacional, Fundación Valle Del Lili and Universidad Icesi, Cali, Colombia.,Fundación Valle del Lili, Rheumatology Unit, Cali, Colombia
| | - Gabriel J Tobón
- Fundación Valle del Lili, Rheumatology Unit, Cali, Colombia.,Department of Medical Microbiology, Immunology and Cell Biology. Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Carlos A Cañas
- CIRAT: Centro de Investigación en Reumatología, Autoinmunidad y Medicina Traslacional, Fundación Valle Del Lili and Universidad Icesi, Cali, Colombia.,Fundación Valle del Lili, Rheumatology Unit, Cali, Colombia
| |
Collapse
|
41
|
Nali LH, Olival GS, Montenegro H, da Silva IT, Dias-Neto E, Naya H, Spangenberg L, Penalva-de-Oliveira AC, Romano CM. Human endogenous retrovirus and multiple sclerosis: A review and transcriptome findings. Mult Scler Relat Disord 2021; 57:103383. [PMID: 34922254 DOI: 10.1016/j.msard.2021.103383] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 10/15/2021] [Accepted: 11/05/2021] [Indexed: 12/14/2022]
Abstract
Multiple Sclerosis is an autoimmune disease with an unknown etiology. Both genetic and environmental factors are believed to trigger MS autoimmunity. Among the environmental factors, infectious agents have been extensively investigated, and the Human Endogenous Retroviruses (HERVs), especially HERV-W, are believed to be associated with MS pathogenesis. HERVs are derived from ancestral infections and comprise around 8% of the human genome. Although most HERVs are silenced, retroviral genes may be expressed with virion formation. There is extensive evidence of the relationship between HERV-W and MS, including higher levels of HERV-W expression in MS patients, HERV-W protein detection in MS plaques, and the HERV-W env protein inducing an inflammatory response in in vitro and in vivo models. Here we discuss possible links of HERVs and the pathogenesis of MS and present new data regarding the diversity of HERVs expression in samples derived from MS patients.
Collapse
Affiliation(s)
- Luiz H Nali
- Laboratório de Virologia, Instituto de Medicina Tropical de São Paulo, LIM-52 (LIMHC) Universidade de São Paulo, Rua Dr. Enéas de Carvalho Aguiar, 470, São Paulo 05403-000, Brazil; Post-graduation Program in Health Sciences, Santo Amaro University, Rua Prof. Enéas de Siqueira Neto, 340, São Paulo 04829-300, Brazil
| | - Guilherme S Olival
- Departamento de Neurologia Santa Casa de Misericórdia de São Paulo, R. Dr. Cesário Mota Júnior, 112, São Paulo 01221-020 Brazil
| | | | - Israel T da Silva
- Laboratory of Medical Genomics, A.C. Camargo Cancer Center, São Paulo 01525-001, Brazil
| | - Emmanuel Dias-Neto
- Laboratory of Medical Genomics, A.C. Camargo Cancer Center, São Paulo 01525-001, Brazil; Laboratory of Neurosciences (LIM-27), Institute of Psychiatry, São Paulo Medical School, University of São Paulo, São Paulo, Brazil
| | - Hugo Naya
- Unidad de Bioinformática Institut Pasteur de Montevideo, Mataojo 2020, CP11400 Montevideo, Uruguay; Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Av. Gral. Eugenio Garzón 780, CP12900 Montevideo, Uruguay
| | - Lucia Spangenberg
- Unidad de Bioinformática Institut Pasteur de Montevideo, Mataojo 2020, CP11400 Montevideo, Uruguay
| | - Augusto C Penalva-de-Oliveira
- Departamento de Neurologia Santa Casa de Misericórdia de São Paulo, R. Dr. Cesário Mota Júnior, 112, São Paulo 01221-020 Brazil; Departamento de Neurologia, Instituto de Infectologia Emilio Ribas, Avenida Doutor Arnaldo, 165, São Paulo 01246-900, Brazil
| | - Camila M Romano
- Laboratório de Virologia, Instituto de Medicina Tropical de São Paulo, LIM-52 (LIMHC) Universidade de São Paulo, Rua Dr. Enéas de Carvalho Aguiar, 470, São Paulo 05403-000, Brazil; Hospital das Clinicas HCFMUSP (LIM52), Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
| |
Collapse
|
42
|
Chen F, Zou L, Williams B, Chao W. Targeting Toll-Like Receptors in Sepsis: From Bench to Clinical Trials. Antioxid Redox Signal 2021; 35:1324-1339. [PMID: 33588628 PMCID: PMC8817700 DOI: 10.1089/ars.2021.0005] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Significance: Sepsis is a critical clinical syndrome with life-threatening organ dysfunction induced by a dysregulated host response to infection. Despite decades of intensive research, sepsis remains a leading cause of in-hospital mortality with few specific treatments. Recent Advances: Toll-like receptors (TLRs) are a part of the innate immune system and play an important role in host defense against invading pathogens such as bacteria, virus, and fungi. Using a combination of genetically modified animal models and pharmacological agents, numerous preclinical studies during the past two decades have demonstrated that dysregulated TLR signaling may contribute to sepsis pathogenesis. However, many clinical trials targeting inflammation and innate immunity such as TLR4 have yielded mixed results. Critical Issues: Here we review various TLRs and the specific molecules these TLRs sense-both the pathogen-associated and host-derived stress molecules, and their converging signaling pathways. We critically analyze preclinical investigations into the role of TLRs in animal sepsis, the complexity of targeting TLRs for sepsis intervention, and the disappointing clinical trials of the TLR4 antagonist eritoran. Future Directions: Future sepsis treatments will depend on better understanding the complex biological mechanisms of sepsis pathogenesis, the high heterogeneity of septic humans as defined by clinical presentations and unique immunological biomarkers, and improved stratifications for targeted interventions.
Collapse
Affiliation(s)
- Fengqian Chen
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Lin Zou
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Brittney Williams
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|
43
|
Helmy M, Selvarajoo K. Systems Biology to Understand and Regulate Human Retroviral Proinflammatory Response. Front Immunol 2021; 12:736349. [PMID: 34867957 PMCID: PMC8635014 DOI: 10.3389/fimmu.2021.736349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/21/2021] [Indexed: 01/13/2023] Open
Abstract
The majority of human genome are non-coding genes. Recent research have revealed that about half of these genome sequences make up of transposable elements (TEs). A branch of these belong to the endogenous retroviruses (ERVs), which are germline viral infection that occurred over millions of years ago. They are generally harmless as evolutionary mutations have made them unable to produce viral agents and are mostly epigenetically silenced. Nevertheless, ERVs are able to express by still unknown mechanisms and recent evidences have shown links between ERVs and major proinflammatory diseases and cancers. The major challenge is to elucidate a detailed mechanistic understanding between them, so that novel therapeutic approaches can be explored. Here, we provide a brief overview of TEs, human ERVs and their links to microbiome, innate immune response, proinflammatory diseases and cancer. Finally, we recommend the employment of systems biology approaches for future HERV research.
Collapse
Affiliation(s)
- Mohamed Helmy
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
- Department of Computer Science, Lakehead University, Thunder Bay, ON, Canada
| | - Kumar Selvarajoo
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
- Synthetic Biology Translational Research Program & SynCTI, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Kent Ridge, Singapore
| |
Collapse
|
44
|
Schroeter CB, Huntemann N, Bock S, Nelke C, Kremer D, Pfeffer K, Meuth SG, Ruck T. Crosstalk of Microorganisms and Immune Responses in Autoimmune Neuroinflammation: A Focus on Regulatory T Cells. Front Immunol 2021; 12:747143. [PMID: 34691057 PMCID: PMC8529161 DOI: 10.3389/fimmu.2021.747143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 09/20/2021] [Indexed: 12/22/2022] Open
Abstract
Regulatory T cells (Tregs) are the major determinant of peripheral immune tolerance. Many Treg subsets have been described, however thymus-derived and peripherally induced Tregs remain the most important subpopulations. In multiple sclerosis, a prototypical autoimmune disorder of the central nervous system, Treg dysfunction is a pathogenic hallmark. In contrast, induction of Treg proliferation and enhancement of their function are central immune evasion mechanisms of infectious pathogens. In accordance, Treg expansion is compartmentalized to tissues with high viral replication and prolonged in chronic infections. In friend retrovirus infection, Treg expansion is mainly based on excessive interleukin-2 production by infected effector T cells. Moreover, pathogens seem also to enhance Treg functions as shown in human immunodeficiency virus infection, where Tregs express higher levels of effector molecules such as cytotoxic T-lymphocyte-associated protein 4, CD39 and cAMP and show increased suppressive capacity. Thus, insights into the molecular mechanisms by which intracellular pathogens alter Treg functions might aid to find new therapeutic approaches to target central nervous system autoimmunity. In this review, we summarize the current knowledge of the role of pathogens for Treg function in the context of autoimmune neuroinflammation. We discuss the mechanistic implications for future therapies and provide an outlook for new research directions.
Collapse
Affiliation(s)
- Christina B Schroeter
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Niklas Huntemann
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Stefanie Bock
- Department of Neurology With Institute of Translational Neurology, University of Münster, Münster, Germany
| | - Christopher Nelke
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - David Kremer
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Klaus Pfeffer
- Institute of Medical Microbiology and Hospital Hygiene, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Sven G Meuth
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Tobias Ruck
- Department of Neurology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| |
Collapse
|
45
|
Morse ZJ, Horwitz MS. Virus Infection Is an Instigator of Intestinal Dysbiosis Leading to Type 1 Diabetes. Front Immunol 2021; 12:751337. [PMID: 34721424 PMCID: PMC8554326 DOI: 10.3389/fimmu.2021.751337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/28/2021] [Indexed: 12/12/2022] Open
Abstract
In addition to genetic predisposition, environmental determinants contribute to a complex etiology leading to onset of type 1 diabetes (T1D). Multiple studies have established the gut as an important site for immune modulation that can directly impact development of autoreactive cell populations against pancreatic self-antigens. Significant efforts have been made to unravel how changes in the microbiome function as a contributor to autoimmune responses and can serve as a biomarker for diabetes development. Large-scale longitudinal studies reveal that common environmental exposures precede diabetes pathology. Virus infections, particularly those associated with the gut, have been prominently identified as risk factors for T1D development. Evidence suggests recent-onset T1D patients experience pre-existing subclinical enteropathy and dysbiosis leading up to development of diabetes. The start of these dysbiotic events coincide with detection of virus infections. Thus viral infection may be a contributing driver for microbiome dysbiosis and disruption of intestinal homeostasis prior to T1D onset. Ultimately, understanding the cross-talk between viral infection, the microbiome, and the immune system is key for the development of preventative measures against T1D.
Collapse
Affiliation(s)
| | - Marc S. Horwitz
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
46
|
Temelimab, an IgG4 Anti-Human Endogenous Retrovirus Monoclonal Antibody: An Early Development Safety Review. Drug Saf 2021; 43:1287-1296. [PMID: 32794123 DOI: 10.1007/s40264-020-00988-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Temelimab (formerly called GNbAC1) is an immunoglobulin (Ig) G4 monoclonal antibody that targets the human endogenous retroviral envelope protein HERV-W-Env, shown to be associated with the pathogenesis of certain autoimmune disorders such as multiple sclerosis (MS) and type 1 diabetes mellitus (T1D). By neutralizing HERV-W-Env, temelimab could act as a disease-modifying therapy for these disorders. It is currently in clinical development for MS and T1D. METHODS The safety information on temelimab (including potential infusion-related reactions, malignancies, pregnancies and antidrug antibodies) collected during three phase I and four phase II clinical trials was reviewed and is summarized in this article. RESULTS In the entire development program, 54 healthy volunteers received single doses of temelimab in three phase I studies, and 334 MS or T1D patients received temelimab for a total estimated exposure of 465 patient-years in four phase II trials. No differences were observed between numbers of treatment-emergent adverse events (TEAEs) or serious adverse events (SAEs) between treatment groups (including placebo), and the number of SAEs was limited. Furthermore, no differences were observed in laboratory evaluations, vital signs, electrocardiogram (ECG), or physical examinations between treatment groups. Rare potential infusion-related reactions were reported. Temelimab treatment was not associated with an increased risk of infections or infestations. CONCLUSION These results suggest that treatment with temelimab was not associated with any particular type of AE. Overall, temelimab was safe and very well tolerated over the tested dose range after repeated monthly administrations.
Collapse
|
47
|
Tovo PA, Opramolla A, Pizzol A, Calosso G, Daprà V, Galliano I, Calvi C, Pinon M, Cisarò F, Rigazio C, Calvo PL, Bergallo M. Overexpression of endogenous retroviruses in children with celiac disease. Eur J Pediatr 2021; 180:2429-2434. [PMID: 33772337 DOI: 10.1007/s00431-021-04050-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/16/2021] [Accepted: 03/21/2021] [Indexed: 11/30/2022]
Abstract
Human endogenous retroviruses (HERVs) represent 8% of our genome. Although no longer infectious, they can regulate transcription of adjacent cellular genes, produce retroviral RNAs, and encode viral proteins that can modulate both innate and adaptive immune responses. Based on this, HERVs have been studied and proposed as contributing factors in various autoimmune disorders. Celiac disease (CD) is considered an autoimmune disease, but HERV expression has not been studied in celiac patients. The aim of this study is to assess the transcription levels of pol genes of HERV-H, -K, and -W and of their TRIM28 repressor in WBCs from celiac children and age-matched control subjects. A PCR real-time TaqMan amplification assay was used to evaluate HERV and TRIM28 transcripts with normalization of the results to glyceraldehyde-3-phosphate dehydrogenase. The RNA levels of pol genes of the three HERV families were significantly higher in WBCs from 38 celiac patients than from 51 control subjects. TRIM28 transcription was comparable between the two study populations.Conclusion: Present results show, for the first time, that pol genes of HERV-H, -K, and -W are overexpressed in patients with CD. Given their proinflammatory and autoimmune properties, this suggests that HERVs may contribute to the development of CD in susceptible individuals. What is Known: • Based on this, HERVs have been studied and proposed as contributing factors in various autoimmune disorders. What is New: • Present results show, for the first time, that pol genes of HERV-H, -K, and -W are overexpressed in patients with CD.
Collapse
Affiliation(s)
- Pier-Angelo Tovo
- Department of Public Health and Pediatric Sciences, University of Turin, Piazza Polonia, 96 10126, Turin, Italy
| | - Anna Opramolla
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Antonio Pizzol
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Giulia Calosso
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Valentina Daprà
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Ilaria Galliano
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Cristina Calvi
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy
| | - Michele Pinon
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Fabio Cisarò
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Caterina Rigazio
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Pier Luigi Calvo
- Pediatric Gastroenterology Unit, Regina Margherita Children's Hospital, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Massimiliano Bergallo
- Department of Public Health and Pediatric Sciences, University of Turin, Piazza Polonia, 96 10126, Turin, Italy. .,Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Turin, Italy.
| |
Collapse
|
48
|
Tovo PA, Garazzino S, Daprà V, Pruccoli G, Calvi C, Mignone F, Alliaudi C, Denina M, Scolfaro C, Zoppo M, Licciardi F, Ramenghi U, Galliano I, Bergallo M. COVID-19 in Children: Expressions of Type I/II/III Interferons, TRIM28, SETDB1, and Endogenous Retroviruses in Mild and Severe Cases. Int J Mol Sci 2021; 22:7481. [PMID: 34299101 PMCID: PMC8303145 DOI: 10.3390/ijms22147481] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/07/2021] [Accepted: 07/10/2021] [Indexed: 02/07/2023] Open
Abstract
Children with the new coronavirus disease 2019 (COVID-19) have milder symptoms and a better prognosis than adult patients. Several investigations assessed type I, II, and III interferon (IFN) signatures in SARS-CoV-2 infected adults, however no data are available for pediatric patients. TRIM28 and SETDB1 regulate the transcription of multiple genes involved in the immune response as well as of human endogenous retroviruses (HERVs). Exogenous viral infections can trigger the activation of HERVs, which in turn can induce inflammatory and immune reactions. Despite the potential cross-talks between SARS-CoV-2 infection and TRIM28, SETDB1, and HERVs, information on their expressions in COVID-19 patients is lacking. We assessed, through a PCR real time Taqman amplification assay, the transcription levels of six IFN-I stimulated genes, IFN-II and three of its sensitive genes, three IFN-lIIs, as well as of TRIM28, SETDB1, pol genes of HERV-H, -K, and -W families, and of env genes of Syncytin (SYN)1, SYN2, and multiple sclerosis-associated retrovirus (MRSV) in peripheral blood from COVID-19 children and in control uninfected subjects. Higher expression levels of IFN-I and IFN-II inducible genes were observed in 36 COVID-19 children with mild or moderate disease as compared to uninfected controls, whereas their concentrations decreased in 17 children with severe disease and in 11 with multisystem inflammatory syndrome (MIS-C). Similar findings were found for the expression of TRIM-28, SETDB1, and every HERV gene. Positive correlations emerged between the transcriptional levels of type I and II IFNs, TRIM28, SETDB1, and HERVs in COVID-19 patients. IFN-III expressions were comparable in each group of subjects. This preserved induction of IFN-λs could contribute to the better control of the infection in children as compared to adults, in whom IFN-III deficiency has been reported. The upregulation of IFN-I, IFN-II, TRIM28, SETDB1, and HERVs in children with mild symptoms, their declines in severe cases or with MIS-C, and the positive correlations of their transcription in SARS-CoV-2-infected children suggest that they may play important roles in conditioning the evolution of the infection.
Collapse
Affiliation(s)
- Pier-Angelo Tovo
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
| | - Silvia Garazzino
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy; (S.G.); (F.M.); (C.S.); (M.Z.)
| | - Valentina Daprà
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, 10126 Turin, Italy;
| | - Giulia Pruccoli
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
| | - Cristina Calvi
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, 10126 Turin, Italy;
| | - Federica Mignone
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy; (S.G.); (F.M.); (C.S.); (M.Z.)
| | - Carla Alliaudi
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, 10126 Turin, Italy;
| | - Marco Denina
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
| | - Carlo Scolfaro
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy; (S.G.); (F.M.); (C.S.); (M.Z.)
| | - Marisa Zoppo
- Infectious Diseases Unit, Department of Pediatrics, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126 Turin, Italy; (S.G.); (F.M.); (C.S.); (M.Z.)
| | - Francesco Licciardi
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
| | - Ugo Ramenghi
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
| | - Ilaria Galliano
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, 10126 Turin, Italy;
| | - Massimiliano Bergallo
- Department of Pediatric Sciences and Public Health, University of Turin, Piazza Polonia 94, 10126 Turin, Italy; (G.P.); (C.C.); (C.A.); (M.D.); (F.L.); (U.R.); (I.G.)
- Pediatric Laboratory, Department of Pediatric Sciences and Public Health, University of Turin, 10126 Turin, Italy;
| |
Collapse
|
49
|
Hartung HP, Derfuss T, Cree BA, Sormani MP, Selmaj K, Stutters J, Prados F, MacManus D, Schneble HM, Lambert E, Porchet H, Glanzman R, Warne D, Curtin F, Kornmann G, Buffet B, Kremer D, Küry P, Leppert D, Rückle T, Barkhof F. Efficacy and safety of temelimab in multiple sclerosis: Results of a randomized phase 2b and extension study. Mult Scler 2021; 28:429-440. [PMID: 34240656 DOI: 10.1177/13524585211024997] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The envelope protein of human endogenous retrovirus W (HERV-W-Env) is expressed by macrophages and microglia, mediating axonal damage in chronic active MS lesions. OBJECTIVE AND METHODS This phase 2, double-blind, 48-week trial in relapsing-remitting MS with 48-week extension phase assessed the efficacy and safety of temelimab; a monoclonal antibody neutralizing HERV-W-Env. The primary endpoint was the reduction of cumulative gadolinium-enhancing T1-lesions in brain magnetic resonance imaging (MRI) scans at week 24. Additional endpoints included numbers of T2 and T1-hypointense lesions, magnetization transfer ratio, and brain atrophy. In total, 270 participants were randomized to receive monthly intravenous temelimab (6, 12, or 18 mg/kg) or placebo for 24 weeks; at week 24 placebo-treated participants were re-randomized to treatment groups. RESULTS The primary endpoint was not met. At week 48, participants treated with 18 mg/kg temelimab had fewer new T1-hypointense lesions (p = 0.014) and showed consistent, however statistically non-significant, reductions in brain atrophy and magnetization transfer ratio decrease, as compared with the placebo/comparator group. These latter two trends were sustained over 96 weeks. No safety issues emerged. CONCLUSION Temelimab failed to show an effect on features of acute inflammation but demonstrated preliminary radiological signs of possible anti-neurodegenerative effects. Current data support the development of temelimab for progressive MS. TRIAL REGISTRATION CHANGE-MS: ClinicalTrials.gov: NCT02782858, EudraCT: 2015-004059-29; ANGEL-MS: ClinicalTrials.gov: NCT03239860, EudraCT: 2016-004935-18.
Collapse
Affiliation(s)
- Hans-Peter Hartung
- Department of Neurology, Universitätsklinikum Düsseldorf (UKD) and Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany/Center for Neurology and Neuropsychiatry, LVR-Klinikum Düsseldorf, Medical Faculty, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany/Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia/Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Tobias Derfuss
- Department of Neurology, Universitätsspital Basel, Basel, Switzerland
| | - Bruce Ac Cree
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Maria Pia Sormani
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy/Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Ospedale Policlinico San Martino, Genova, Italy
| | - Krzysztof Selmaj
- Department of Neurology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland/Department of Neurology, Medical Academy of Łódź, Łódź, Poland
| | - Jonathan Stutters
- Nuclear Magnetic Resonance (NMR) Research Unit, Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, University College London, London, UK
| | - Ferran Prados
- Nuclear Magnetic Resonance (NMR) Research Unit, Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, University College London, London, UK/Centre for Medical Image Computing (CMIC), Department of Medical Physics and Biomedical Engineering, University College London, London, UK; Universitat Oberta de Catalunya, Barcelona, Spain
| | - David MacManus
- Nuclear Magnetic Resonance (NMR) Research Unit, Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, University College London, London, UK
| | - Hans-Martin Schneble
- Centre for Medical Image Computing (CMIC), Department of Medical Physics and Biomedical Engineering, University College London, London, UK
| | - Estelle Lambert
- Institut de Recherches Internationales Servier, Suresnes, France
| | - Hervé Porchet
- GeNeuro SA, Geneva, Switzerland/Department of Pharmacology, University of Pretoria, Pretoria, South Africa
| | | | | | - Francois Curtin
- GeNeuro SA, Geneva, Switzerland; Clinical Pharmacology and Toxicology Division, Geneva University Hospitals, Geneva, Switzerland
| | | | | | - David Kremer
- Department of Neurology, Universitätsklinikum Düsseldorf (UKD) and Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany/Center for Neurology and Neuropsychiatry, LVR-Klinikum Düsseldorf, Medical Faculty, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Patrick Küry
- Department of Neurology, Universitätsklinikum Düsseldorf (UKD) and Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany/Center for Neurology and Neuropsychiatry, LVR-Klinikum Düsseldorf, Medical Faculty, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - David Leppert
- Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia/GeNeuro SA, Geneva, Switzerland
| | | | - Frederik Barkhof
- Nuclear Magnetic Resonance (NMR) Research Unit, Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, University College London, London, UK/Centre for Medical Image Computing (CMIC), Department of Medical Physics and Biomedical Engineering, University College London, London, UK/Department of Radiology and Nuclear Medicine, VU University Medical Center Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
50
|
Macías-Redondo S, Strunk M, Cebollada-Solanas A, Ara JR, Martín J, Schoorlemmer J. Upregulation of selected HERVW loci in multiple sclerosis. Mob DNA 2021; 12:18. [PMID: 34187540 PMCID: PMC8243764 DOI: 10.1186/s13100-021-00243-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 06/01/2021] [Indexed: 01/08/2023] Open
Affiliation(s)
- Sofía Macías-Redondo
- Instituto Aragonés de Ciencias de la Salud (IACS), c/Juan Bosco 13, 50009, Zaragoza, Spain
| | - Mark Strunk
- Sequencing and Functional Genomics, Aragon Biomedical Research Center (CIBA), Instituto Aragonés de Ciencias de la Salud (IACS), Zaragoza, Spain
| | - Alberto Cebollada-Solanas
- Aragon Biomedical Research Center (CIBA), Instituto Aragonés de Ciencias de la Salud (IACS), Unidad de Biocomputación, Zaragoza, Spain
| | - José-Ramón Ara
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón), Zaragoza, Spain.,Department of Neurology, University Hospital Miguel Servet, Zaragoza, Spain
| | - Jesús Martín
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón), Zaragoza, Spain.,Department of Neurology, University Hospital Miguel Servet, Zaragoza, Spain
| | - Jon Schoorlemmer
- Instituto Aragonés de Ciencias de la Salud (IACS), c/Juan Bosco 13, 50009, Zaragoza, Spain. .,ARAID Foundation, Avda. de Ranillas 1-D, 50018, Zaragoza, Spain. .,Placental pathophysiology and fetal programming research group del IISA, c/Juan Bosco 13, 50009, Zaragoza, Spain.
| |
Collapse
|