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Chen M, Yang C, Zhai X, Wang C, Liu M, Zhang B, Guo X, Wang Y, Li H, Liu Y, Han J, Wang X, Li J, Jia L, Li L. Comprehensive Identification and Characterization of HML-9 Group in Chimpanzee Genome. Viruses 2024; 16:892. [PMID: 38932184 PMCID: PMC11209481 DOI: 10.3390/v16060892] [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: 01/01/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
Endogenous retroviruses (ERVs) are related to long terminal repeat (LTR) retrotransposons, comprising gene sequences of exogenous retroviruses integrated into the host genome and inherited according to Mendelian law. They are considered to have contributed greatly to the evolution of host genome structure and function. We previously characterized HERV-K HML-9 in the human genome. However, the biological function of this type of element in the genome of the chimpanzee, which is the closest living relative of humans, largely remains elusive. Therefore, the current study aims to characterize HML-9 in the chimpanzee genome and to compare the results with those in the human genome. Firstly, we report the distribution and genetic structural characterization of the 26 proviral elements and 38 solo LTR elements of HML-9 in the chimpanzee genome. The results showed that the distribution of these elements displayed a non-random integration pattern, and only six elements maintained a relatively complete structure. Then, we analyze their phylogeny and reveal that the identified elements all cluster together with HML-9 references and with those identified in the human genome. The HML-9 integration time was estimated based on the 2-LTR approach, and the results showed that HML-9 elements were integrated into the chimpanzee genome between 14 and 36 million years ago and into the human genome between 18 and 49 mya. In addition, conserved motifs, cis-regulatory regions, and enriched PBS sequence features in the chimpanzee genome were predicted based on bioinformatics. The results show that pathways significantly enriched for ERV LTR-regulated genes found in the chimpanzee genome are closely associated with disease development, including neurological and neurodevelopmental psychiatric disorders. In summary, the identification, characterization, and genomics of HML-9 presented here not only contribute to our understanding of the role of ERVs in primate evolution but also to our understanding of their biofunctional significance.
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Affiliation(s)
- Mingyue Chen
- National 111 Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering, Hubei University of Technology, Wuhan 430068, China;
| | - Caiqin Yang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Xiuli Zhai
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
- Department of Microbiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, China
| | - Chunlei Wang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
- Department of Microbiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, China
| | - Mengying Liu
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
- School of Life Sciences, Tsinghua University, Beijing 100084, China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bohan Zhang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Xing Guo
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
- Department of Microbiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, China
| | - Yanglan Wang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hanping Li
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Yongjian Liu
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Jingwan Han
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Xiaolin Wang
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Jingyun Li
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Lei Jia
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
| | - Lin Li
- State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Beijing 100071, China; (C.Y.); (X.Z.); (C.W.); (M.L.); (B.Z.); (X.G.); (Y.W.); (H.L.); (Y.L.); (J.H.); (X.W.); (J.L.)
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2
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Ngo MH, AbuEed L, Kawasaki J, Oishi N, Pramono D, Kimura T, Sakurai M, Watanabe K, Mizukami Y, Ochi H, Anai Y, Odahara Y, Umehara D, Kawamura M, Watanabe S, Miyake A, Nishigaki K. Multiple recombination events between endogenous retroviral elements and feline leukemia virus. J Virol 2024; 98:e0140023. [PMID: 38240589 PMCID: PMC10878261 DOI: 10.1128/jvi.01400-23] [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: 09/11/2023] [Accepted: 12/19/2023] [Indexed: 02/21/2024] Open
Abstract
Feline leukemia virus (FeLV) is an exogenous retrovirus that causes malignant hematopoietic disorders in domestic cats, and its virulence may be closely associated with viral sequences. FeLV is classified into several subgroups, including A, B, C, D, E, and T, based on viral receptor interference properties or receptor usage. However, the transmission manner and disease specificity of the recombinant viruses FeLV-D and FeLV-B remain unclear. The aim of this study was to understand recombination events between exogenous and endogenous retroviruses within a host and elucidate the emergence and transmission of recombinant viruses. We observed multiple recombination events involving endogenous retroviruses (ERVs) in FeLV from a family of domestic cats kept in one house; two of these cats (ON-T and ON-C) presented with lymphoma and leukemia, respectively. Clonal integration of FeLV-D was observed in the ON-T case, suggesting an association with FeLV-D pathogenesis. Notably, the receptor usage of FeLV-B observed in ON-T was mediated by feline Pit1 and feline Pit2, whereas only feline Pit1 was used in ON-C. Furthermore, XR-FeLV, a recombinant FeLV containing an unrelated sequence referred to the X-region, which is homologous to a portion of the 5'-leader sequence of Felis catus endogenous gammaretrovirus 4 (FcERV-gamma4), was isolated. Genetic analysis suggested that most recombinant viruses occurred de novo; however, the possibility of FeLV-B transmission was also recognized in the family. This study demonstrated the occurrence of multiple recombination events between exogenous and endogenous retroviruses in domestic cats, highlighting the contribution of ERVs to pathogenic recombinant viruses.IMPORTANCEFeline leukemia virus subgroup A (FeLV-A) is primarily transmitted among cats. During viral transmission, genetic changes in the viral genome lead to the emergence of novel FeLV subgroups or variants with altered virulence. We isolated three FeLV subgroups (A, B, and D) and XR-FeLV from two cats and identified multiple recombination events in feline endogenous retroviruses (ERVs), such as enFeLV, ERV-DC, and FcERV-gamma4, which are present in the cat genome. This study highlights the pathogenic contribution of ERVs in the emergence of FeLV-B, FeLV-D, and XR-FeLV in a feline population.
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Affiliation(s)
- Minh Ha Ngo
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Loai AbuEed
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Junna Kawasaki
- Faculty of Science and Engineering, Waseda University, Okubo, Shinjuku-ku, Tokyo, Japan
| | | | - Didik Pramono
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Tohru Kimura
- Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Masashi Sakurai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Kenji Watanabe
- Institute of Gene Research, Science Research Center, Yamaguchi University, Minami-kogushi, Ube, Japan
| | - Yoichi Mizukami
- Institute of Gene Research, Science Research Center, Yamaguchi University, Minami-kogushi, Ube, Japan
| | - Haruyo Ochi
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Yukari Anai
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Yuka Odahara
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Daigo Umehara
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Maki Kawamura
- Life Science Division, Advanced Technology Institute, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Shinya Watanabe
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Ariko Miyake
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Kazuo Nishigaki
- Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
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3
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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.
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Affiliation(s)
- Mahoko Takahashi Ueda
- Department of Genomic Function and Diversity, Medical Research Institute, Tokyo Medical and Dental University
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4
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Rauch E, Amendt T, Lopez Krol A, Lang FB, Linse V, Hohmann M, Keim AC, Kreutzer S, Kawengian K, Buchholz M, Duschner P, Grauer S, Schnierle B, Ruhl A, Burtscher I, Dehnert S, Kuria C, Kupke A, Paul S, Liehr T, Lechner M, Schnare M, Kaufmann A, Huber M, Winkler TH, Bauer S, Yu P. T-bet + B cells are activated by and control endogenous retroviruses through TLR-dependent mechanisms. Nat Commun 2024; 15:1229. [PMID: 38336876 PMCID: PMC10858178 DOI: 10.1038/s41467-024-45201-6] [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: 03/07/2023] [Accepted: 01/17/2024] [Indexed: 02/12/2024] Open
Abstract
Endogenous retroviruses (ERVs) are an integral part of the mammalian genome. The role of immune control of ERVs in general is poorly defined as is their function as anti-cancer immune targets or drivers of autoimmune disease. Here, we generate mouse-strains where Moloney-Murine Leukemia Virus tagged with GFP (ERV-GFP) infected the mouse germline. This enables us to analyze the role of genetic, epigenetic and cell intrinsic restriction factors in ERV activation and control. We identify an autoreactive B cell response against the neo-self/ERV antigen GFP as a key mechanism of ERV control. Hallmarks of this response are spontaneous ERV-GFP+ germinal center formation, elevated serum IFN-γ levels and a dependency on Age-associated B cells (ABCs) a subclass of T-bet+ memory B cells. Impairment of IgM B cell receptor-signal in nucleic-acid sensing TLR-deficient mice contributes to defective ERV control. Although ERVs are a part of the genome they break immune tolerance, induce immune surveillance against ERV-derived self-antigens and shape the host immune response.
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Affiliation(s)
- Eileen Rauch
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
- CSL Behring Innovation GmbH, Emil-von-Behring-Str. 76, 35041, Marburg, Germany
| | - Timm Amendt
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
- The Francis Crick Institute, NW1 1AT, London, UK
| | | | - Fabian B Lang
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Vincent Linse
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Michelle Hohmann
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
- Apollo Ventures Holding GmbH, 20457, Hamburg, Germany
| | - Ann-Christin Keim
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Susanne Kreutzer
- Max-Planck-Institute for Heart and Lung Research, 61231, Bad Nauheim, Germany
| | - Kevin Kawengian
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Malte Buchholz
- Department of Gastroenterology, Endocrinology and Metabolism, and Core Facility Small Animal Multispectral and Ultrasound Imaging, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Philipp Duschner
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Saskia Grauer
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Barbara Schnierle
- Department of Virology, Paul-Ehrlich-Institut, 63225, Langen, Germany
| | - Andreas Ruhl
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
- Department of Infection Biology, University Hospital Erlangen, 91054, Erlangen, Germany
| | - Ingo Burtscher
- Institute of Diabetes and Regeneration Research, Helmholtz Zentrum München, 85764, Neuherberg, Germany
| | - Sonja Dehnert
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Chege Kuria
- Nikolaus-Fiebiger Center for Molecular Medicine, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Alexandra Kupke
- Institute of Virology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Stephanie Paul
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, 07747, Jena, Germany
| | - Marcus Lechner
- Center for Synthetic Microbiology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Markus Schnare
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Andreas Kaufmann
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Magdalena Huber
- Institute of Sytems Immunology, Center for Tumor and Immunobiology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Thomas H Winkler
- Nikolaus-Fiebiger Center for Molecular Medicine, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Stefan Bauer
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany
| | - Philipp Yu
- Institute of Immunology, Philipps-Universität Marburg, 35043, Marburg, Germany.
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Jern P, Greenwood AD. Wildlife endogenous retroviruses: colonization, consequences, and cooption. Trends Genet 2024; 40:149-159. [PMID: 37985317 DOI: 10.1016/j.tig.2023.10.014] [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: 09/11/2023] [Revised: 10/24/2023] [Accepted: 10/31/2023] [Indexed: 11/22/2023]
Abstract
Endogenous retroviruses (ERVs) are inherited genomic remains of past germline retroviral infections. Research on human ERVs has focused on medical implications of their dysregulation on various diseases. However, recent studies incorporating wildlife are yielding remarkable perspectives on long-term retrovirus-host interactions. These initial forays into broader taxonomic analysis, including sequencing of multiple individuals per species, show the incredible plasticity and variation of ERVs within and among wildlife species. This demonstrates that stochastic processes govern much of the vertebrate genome. In this review, we elaborate on discoveries pertaining to wildlife ERV origins and evolution, genome colonization, and consequences for host biology.
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Affiliation(s)
- Patric Jern
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
| | - Alex D Greenwood
- Department of Wildlife Diseases, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany; School of Veterinary Medicine, Freie Unversität Berlin, Berlin, Germany.
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Cocozza F, Martin‐Jaular L, Lippens L, Di Cicco A, Arribas YA, Ansart N, Dingli F, Richard M, Merle L, Jouve San Roman M, Poullet P, Loew D, Lévy D, Hendrix A, Kassiotis G, Joliot A, Tkach M, Théry C. Extracellular vesicles and co-isolated endogenous retroviruses from murine cancer cells differentially affect dendritic cells. EMBO J 2023; 42:e113590. [PMID: 38073509 PMCID: PMC10711651 DOI: 10.15252/embj.2023113590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 12/18/2023] Open
Abstract
Cells secrete extracellular vesicles (EVs) and non-vesicular extracellular (nano)particles (NVEPs or ENPs) that may play a role in intercellular communication. Tumor-derived EVs have been proposed to induce immune priming of antigen presenting cells or to be immuno-suppressive agents. We suspect that such disparate functions are due to variable compositions in EV subtypes and ENPs. We aimed to characterize the array of secreted EVs and ENPs of murine tumor cell lines. Unexpectedly, we identified virus-like particles (VLPs) from endogenous murine leukemia virus in preparations of EVs produced by many tumor cells. We established a protocol to separate small EVs from VLPs and ENPs. We compared their protein composition and analyzed their functional interaction with target dendritic cells. ENPs were poorly captured and did not affect dendritic cells. Small EVs specifically induced dendritic cell death. A mixed large/dense EV/VLP preparation was most efficient to induce dendritic cell maturation and antigen presentation. Our results call for systematic re-evaluation of the respective proportions and functions of non-viral EVs and VLPs produced by murine tumors and their contribution to tumor progression.
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Affiliation(s)
- Federico Cocozza
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
- Université de ParisParisFrance
| | - Lorena Martin‐Jaular
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
- Institut Curie Centre de RechercheCurieCoreTech Extracellular VesiclesParisFrance
| | - Lien Lippens
- Laboratory of Experimental Cancer Research, Department of Human Structure and RepairGhent University, and Cancer Research Institute GhentGhentBelgium
| | - Aurelie Di Cicco
- Institut Curie, PSL Research University, Sorbonne Université, CNRS UMR168, Laboratoire Physico‐chimie CurieParisFrance
- Institut Curie, PSL Research University, CNRS UMR144, Cell and Tissue Imaging Facility (PICT‐IBiSA)ParisFrance
| | - Yago A Arribas
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
| | - Nicolas Ansart
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
| | - Florent Dingli
- Institut Curie, PSL Research University, Centre de Recherche, CurieCoreTech Spectrométrie de Masse ProtéomiqueParisFrance
| | - Michael Richard
- Institut Curie, PSL Research University, Centre de Recherche, CurieCoreTech Spectrométrie de Masse ProtéomiqueParisFrance
| | - Louise Merle
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
| | | | - Patrick Poullet
- Institut Curie, Bioinformatics core facility (CUBIC), INSERM U900, PSL Research University, Mines Paris TechParisFrance
| | - Damarys Loew
- Institut Curie, PSL Research University, Centre de Recherche, CurieCoreTech Spectrométrie de Masse ProtéomiqueParisFrance
| | - Daniel Lévy
- Institut Curie, PSL Research University, Sorbonne Université, CNRS UMR168, Laboratoire Physico‐chimie CurieParisFrance
- Institut Curie, PSL Research University, CNRS UMR144, Cell and Tissue Imaging Facility (PICT‐IBiSA)ParisFrance
| | - An Hendrix
- Laboratory of Experimental Cancer Research, Department of Human Structure and RepairGhent University, and Cancer Research Institute GhentGhentBelgium
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute and Department of Medicine, Faculty of MedicineImperial CollegeLondonUK
| | - Alain Joliot
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
| | - Mercedes Tkach
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
| | - Clotilde Théry
- INSERM U932, Institut Curie Centre de Recherche, PSL Research UniversityParisFrance
- Institut Curie Centre de RechercheCurieCoreTech Extracellular VesiclesParisFrance
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7
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Sun S, Fang B, Wang R, Ren F, Chen J. ERV: a promising new target for lung adenocarcinoma treatment. Sci Bull (Beijing) 2023; 68:2135-2138. [PMID: 37661539 DOI: 10.1016/j.scib.2023.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Affiliation(s)
- Siyuan Sun
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100190, China
| | - Bing Fang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100190, China
| | - Ran Wang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100190, China
| | - Fazheng Ren
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100190, China
| | - Juan Chen
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100190, China.
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8
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Vinuesa CG, Shen N, Ware T. Genetics of SLE: mechanistic insights from monogenic disease and disease-associated variants. Nat Rev Nephrol 2023; 19:558-572. [PMID: 37438615 DOI: 10.1038/s41581-023-00732-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2023] [Indexed: 07/14/2023]
Abstract
The past few years have provided important insights into the genetic architecture of systemic autoimmunity through aggregation of findings from genome-wide association studies (GWAS) and whole-exome or whole-genome sequencing studies. In the prototypic systemic autoimmune disease systemic lupus erythematosus (SLE), monogenic disease accounts for a small fraction of cases but has been instrumental in the elucidation of disease mechanisms. Defects in the clearance or digestion of extracellular or intracellular DNA or RNA lead to increased sensing of nucleic acids, which can break B cell tolerance and induce the production of type I interferons leading to tissue damage. Current data suggest that multiple GWAS SLE risk alleles act in concert with rare functional variants to promote SLE development. Moreover, introduction of orthologous variant alleles into mice has revealed that pathogenic X-linked dominant and recessive SLE can be caused by novel variants in TLR7 and SAT1, respectively. Such bespoke models of disease help to unravel pathogenic pathways and can be used to test targeted therapies. Cell type-specific expression data revealed that most GWAS SLE risk genes are highly expressed in age-associated B cells (ABCs), which supports the view that ABCs produce lupus autoantibodies and contribute to end-organ damage by persisting in inflamed tissues, including the kidneys. ABCs have thus emerged as key targets of promising precision therapeutics.
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Affiliation(s)
- Carola G Vinuesa
- The Francis Crick Institute, London, UK.
- University College London, London, UK.
- China Australia Centre for Personalized Immunology (CACPI), Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China.
| | - Nan Shen
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
- Center for Autoimmune Genomics and Aetiology, Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Paediatrics, University of Cincinnati, Cincinnati, OH, USA
| | - Thuvaraka Ware
- The Francis Crick Institute, London, UK
- University College London, London, UK
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9
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Flecks M, Fischer N, Krijnse Locker J, Tönjes RR, Godehardt AW. Analysis of PERV-C superinfection resistance using HA-tagged viruses. Retrovirology 2023; 20:14. [PMID: 37605152 PMCID: PMC10440901 DOI: 10.1186/s12977-023-00630-x] [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: 06/02/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Using pigs as organ donors has advanced xenotransplantation to the point that it is almost ready for clinical use. However, there is still a zoonotic risk associated with xenotransplantation, and the potential transmission of porcine endogenous retroviruses needs to be surveyed. Despite significant attempts to eliminate this risk, by the selection of PERV-C free pigs with low expression of PERV-A, -B, and by the genome-wide inactivation of PERV using CRISPR/Cas9, the impact of superinfection resistance (SIR) was not investigated. SIR is a viral trait that prevents reinfection (superinfection). For PERV, the underlying mechanism is unclear, whether and how cells, that harbor functional PERV, are protected. Using PERV-C(5683) as a reference virus, we investigated SIR in a newly developed in vitro model to pursue the mechanism and confirm its protective effect. RESULTS We developed three PERV-C constructs on the basis of PERV-C(5683), each of which carries a hemagglutinin tag (HA-tag) at a different position of the envelope gene (SP-HA, HA-VRA, and RPep-HA), to distinguish between primary infection and superinfection. The newly generated PERV-C(5683)-HA viruses were characterized while quantifying the viral RNA, reverse transcriptase activity, protein expression analysis, and infection studies. It was demonstrated that SP-HA and RPep-HA were comparable to PERV-C(5683), whereas HA-VRA was not replication competent. SP-HA and RPep-HA were chosen to challenge PERV-C(5683)-positive ST-IOWA cells demonstrating that PERV-C-HA viruses are not able to superinfect those cells. They do not integrate into the genome and are not expressed. CONCLUSIONS The mechanism of SIR applies to PERV-C. The production of PERV-C particles serves as a defense mechanism from superinfection with exogenous PERV-C. It was demonstrated by newly generated PERV-C(5683)-HA clones that might be used as a cutting-edge tool. The HA-tagging of PERV-C is novel, providing a blueprint for the tagging of other human tropic PERV viruses. The tagged viruses are suitable for additional in vitro and in vivo infection studies and will contribute, to basic research on viral invasion and pathogenesis. It will maintain the virus safety of XTx.
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Affiliation(s)
- Merle Flecks
- Division of Haematology, Cell and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Nicole Fischer
- Division of Haematology, Cell and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Jacomina Krijnse Locker
- Loewe-DRUID Research Group, Electron Microscopy of Pathogens, Paul-Ehrlich-Institut, Langen, Germany
| | - Ralf R. Tönjes
- Division of Haematology, Cell and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Antonia W. Godehardt
- Division of Haematology, Cell and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
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10
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Liu S, Heumüller SE, Hossinger A, Müller SA, Buravlova O, Lichtenthaler SF, Denner P, Vorberg IM. Reactivated endogenous retroviruses promote protein aggregate spreading. Nat Commun 2023; 14:5034. [PMID: 37596282 PMCID: PMC10439213 DOI: 10.1038/s41467-023-40632-z] [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: 06/21/2022] [Accepted: 08/02/2023] [Indexed: 08/20/2023] Open
Abstract
Prion-like spreading of protein misfolding is a characteristic of neurodegenerative diseases, but the exact mechanisms of intercellular protein aggregate dissemination remain unresolved. Evidence accumulates that endogenous retroviruses, remnants of viral germline infections that are normally epigenetically silenced, become upregulated in neurodegenerative diseases such as amyotrophic lateral sclerosis and tauopathies. Here we uncover that activation of endogenous retroviruses affects prion-like spreading of proteopathic seeds. We show that upregulation of endogenous retroviruses drastically increases the dissemination of protein aggregates between cells in culture, a process that can be inhibited by targeting the viral envelope protein or viral protein processing. Human endogenous retrovirus envelopes of four different clades also elevate intercellular spreading of proteopathic seeds, including pathological Tau. Our data support a role of endogenous retroviruses in protein misfolding diseases and suggest that antiviral drugs could represent promising candidates for inhibiting protein aggregate spreading.
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Affiliation(s)
- Shu Liu
- German Center for Neurodegenerative Diseases Bonn (DZNE), Venusberg Campus 1/ 99, 53127, Bonn, Germany
- German Federal Institute for Risk Assessment (BfR), German Centre for the Protection of Laboratory Animals (Bf3R), Max-Dohrn-Straße 8-10, 10589, Berlin, Germany
| | | | - André Hossinger
- German Center for Neurodegenerative Diseases Bonn (DZNE), Venusberg Campus 1/ 99, 53127, Bonn, Germany
| | - Stephan A Müller
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Oleksandra Buravlova
- German Center for Neurodegenerative Diseases Bonn (DZNE), Venusberg Campus 1/ 99, 53127, Bonn, Germany
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Philip Denner
- German Center for Neurodegenerative Diseases Bonn (DZNE), Venusberg Campus 1/ 99, 53127, Bonn, Germany
| | - Ina M Vorberg
- German Center for Neurodegenerative Diseases Bonn (DZNE), Venusberg Campus 1/ 99, 53127, Bonn, Germany.
- Department of Neurology, Rheinische Friedrich-Wilhelms-Universität Bonn, Germany, Venusberg-Campus 1, 53127, Bonn, Germany.
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11
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Vinuesa CG, Grenov A, Kassiotis G. Innate virus-sensing pathways in B cell systemic autoimmunity. Science 2023; 380:478-484. [PMID: 37141353 DOI: 10.1126/science.adg6427] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Although all multicellular organisms have germ line-encoded innate receptors to sense pathogen-associated molecular patterns, vertebrates also evolved adaptive immunity based on somatically generated antigen receptors on B and T cells. Because randomly generated antigen receptors may also react with self-antigens, tolerance checkpoints operate to limit but not completely prevent autoimmunity. These two systems are intricately linked, with innate immunity playing an instrumental role in the induction of adaptive antiviral immunity. In this work, we review how inborn errors of innate immunity can instigate B cell autoimmunity. Increased nucleic acid sensing, often resulting from defects in metabolizing pathways or retroelement control, can break B cell tolerance and converge into TLR7-, cGAS-STING-, or MAVS-dominant signaling pathways. The resulting syndromes span a spectrum that ranges from chilblain and systemic lupus to severe interferonopathies.
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Affiliation(s)
- Carola G Vinuesa
- The Francis Crick Institute, London, UK
- China Centre for Personalised Immunology, Renji Hospital, Shanghai, China
| | | | - George Kassiotis
- The Francis Crick Institute, London, UK
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK
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12
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Abstract
Our defenses against infection rely on the ability of the immune system to distinguish invading pathogens from self. This task is exceptionally challenging, if not seemingly impossible, in the case of retroviruses that have integrated almost seamlessly into the host. This review examines the limits of innate and adaptive immune responses elicited by endogenous retroviruses and other retroelements, the targets of immune recognition, and the consequences for host health and disease. Contrary to theoretical expectation, endogenous retroelements retain substantial immunogenicity, which manifests most profoundly when their epigenetic repression is compromised, contributing to autoinflammatory and autoimmune disease and age-related inflammation. Nevertheless, recent evidence suggests that regulated immune reactivity to endogenous retroelements is integral to immune system development and function, underpinning cancer immunosurveillance, resistance to infection, and responses to the microbiota. Elucidation of the interaction points with endogenous retroelements will therefore deepen our understanding of immune system function and contribution to disease.
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Affiliation(s)
- George Kassiotis
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom;
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, United Kingdom
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13
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Ng KW, Boumelha J, Enfield KSS, Almagro J, Cha H, Pich O, Karasaki T, Moore DA, Salgado R, Sivakumar M, Young G, Molina-Arcas M, de Carné Trécesson S, Anastasiou P, Fendler A, Au L, Shepherd STC, Martínez-Ruiz C, Puttick C, Black JRM, Watkins TBK, Kim H, Shim S, Faulkner N, Attig J, Veeriah S, Magno N, Ward S, Frankell AM, Al Bakir M, Lim EL, Hill MS, Wilson GA, Cook DE, Birkbak NJ, Behrens A, Yousaf N, Popat S, Hackshaw A, Hiley CT, Litchfield K, McGranahan N, Jamal-Hanjani M, Larkin J, Lee SH, Turajlic S, Swanton C, Downward J, Kassiotis G. Antibodies against endogenous retroviruses promote lung cancer immunotherapy. Nature 2023; 616:563-573. [PMID: 37046094 PMCID: PMC10115647 DOI: 10.1038/s41586-023-05771-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 01/30/2023] [Indexed: 04/14/2023]
Abstract
B cells are frequently found in the margins of solid tumours as organized follicles in ectopic lymphoid organs called tertiary lymphoid structures (TLS)1,2. Although TLS have been found to correlate with improved patient survival and response to immune checkpoint blockade (ICB), the underlying mechanisms of this association remain elusive1,2. Here we investigate lung-resident B cell responses in patients from the TRACERx 421 (Tracking Non-Small-Cell Lung Cancer Evolution Through Therapy) and other lung cancer cohorts, and in a recently established immunogenic mouse model for lung adenocarcinoma3. We find that both human and mouse lung adenocarcinomas elicit local germinal centre responses and tumour-binding antibodies, and further identify endogenous retrovirus (ERV) envelope glycoproteins as a dominant anti-tumour antibody target. ERV-targeting B cell responses are amplified by ICB in both humans and mice, and by targeted inhibition of KRAS(G12C) in the mouse model. ERV-reactive antibodies exert anti-tumour activity that extends survival in the mouse model, and ERV expression predicts the outcome of ICB in human lung adenocarcinoma. Finally, we find that effective immunotherapy in the mouse model requires CXCL13-dependent TLS formation. Conversely, therapeutic CXCL13 treatment potentiates anti-tumour immunity and synergizes with ICB. Our findings provide a possible mechanistic basis for the association of TLS with immunotherapy response.
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Affiliation(s)
- Kevin W Ng
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Jesse Boumelha
- Oncogene Biology Laboratory, The Francis Crick Institute, London, UK
| | - Katey S S Enfield
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Jorge Almagro
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - Hongui Cha
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Oriol Pich
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Takahiro Karasaki
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Metastasis Laboratory, University College London Cancer Institute, London, UK
| | - David A Moore
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Department of Cellular Pathology, University College London Hospitals, London, UK
| | - Roberto Salgado
- Department of Pathology, ZAS Hospitals, Antwerp, Belgium
- Division of Research, Peter MacCallum Cancer Centre, Melbourne, Queensland, Australia
| | - Monica Sivakumar
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - George Young
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
- Bioinformatics and Biostatistics Facility, The Francis Crick Institute, London, UK
| | | | | | | | - Annika Fendler
- Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
| | - Lewis Au
- Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
- Renal and Skin Units, The Royal Marsden Hospital, London, UK
| | - Scott T C Shepherd
- Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
- Renal and Skin Units, The Royal Marsden Hospital, London, UK
| | - Carlos Martínez-Ruiz
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Genome Evolution Research Group, Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Clare Puttick
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Genome Evolution Research Group, Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - James R M Black
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Genome Evolution Research Group, Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Thomas B K Watkins
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Hyemin Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seohee Shim
- Department of Health Sciences and Technology, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Nikhil Faulkner
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Jan Attig
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Selvaraju Veeriah
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Neil Magno
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Sophia Ward
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Advanced Sequencing Facility, The Francis Crick Institute, London, UK
| | - Alexander M Frankell
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Maise Al Bakir
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Emilia L Lim
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Mark S Hill
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Gareth A Wilson
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Daniel E Cook
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
| | - Nicolai J Birkbak
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Bioinformatics Research Centre, Aarhus University, Aarhus, Denmark
| | - Axel Behrens
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
- Cancer Stem Cell Laboratory, Institute of Cancer Research, London, UK
- Division of Cancer, Department of Surgery and Cancer, Imperial College, London, UK
- CRUK Convergence Science Centre, Imperial College, London, UK
| | - Nadia Yousaf
- Renal and Skin Units, The Royal Marsden Hospital, London, UK
- Lung Unit, The Royal Marsden Hospital, London, UK
| | - Sanjay Popat
- Lung Unit, The Royal Marsden Hospital, London, UK
- Division of Clinical Studies, The Institute of Cancer Research, London, UK
| | - Allan Hackshaw
- Cancer Research UK and University College London Cancer Trials Centre, London, UK
| | - Crispin T Hiley
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Kevin Litchfield
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Tumour Immunogenomics and Immunosurveillance Laboratory, University College London Cancer Institute, London, UK
| | - Nicholas McGranahan
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Genome Evolution Research Group, Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Mariam Jamal-Hanjani
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
- Cancer Metastasis Laboratory, University College London Cancer Institute, London, UK
- Department of Oncology, University College London Hospitals, London, UK
| | - James Larkin
- Renal and Skin Units, The Royal Marsden Hospital, London, UK
- Melanoma and Kidney Cancer Team, The Institute of Cancer Research, London, UK
| | - Se-Hoon Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Samra Turajlic
- Cancer Dynamics Laboratory, The Francis Crick Institute, London, UK
- Renal and Skin Units, The Royal Marsden Hospital, London, UK
- Melanoma and Kidney Cancer Team, The Institute of Cancer Research, London, UK
| | - Charles Swanton
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, UK.
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK.
- Department of Oncology, University College London Hospitals, London, UK.
| | - Julian Downward
- Oncogene Biology Laboratory, The Francis Crick Institute, London, UK.
| | - George Kassiotis
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK.
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK.
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14
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Armstrong H, Rahbari M, Park H, Sharon D, Thiesen A, Hotte N, Sun N, Syed H, Abofayed H, Wang W, Madsen K, Wine E, Mason A. Mouse mammary tumor virus is implicated in severity of colitis and dysbiosis in the IL-10 -/- mouse model of inflammatory bowel disease. MICROBIOME 2023; 11:39. [PMID: 36869359 PMCID: PMC9983191 DOI: 10.1186/s40168-023-01483-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Following viral infection, genetically manipulated mice lacking immunoregulatory function may develop colitis and dysbiosis in a strain-specific fashion that serves as a model for inflammatory bowel disease (IBD). We found that one such model of spontaneous colitis, the interleukin (IL)-10 knockout (IL-10-/-) model derived from the SvEv mouse, had evidence of increased Mouse mammary tumor virus (MMTV) viral RNA expression compared to the SvEv wild type. MMTV is endemic in several mouse strains as an endogenously encoded Betaretrovirus that is passaged as an exogenous agent in breast milk. As MMTV requires a viral superantigen to replicate in the gut-associated lymphoid tissue prior to the development of systemic infection, we evaluated whether MMTV may contribute to the development of colitis in the IL-10-/- model. RESULTS Viral preparations extracted from IL-10-/- weanling stomachs revealed augmented MMTV load compared to the SvEv wild type. Illumina sequencing of the viral genome revealed that the two largest contigs shared 96.4-97.3% identity with the mtv-1 endogenous loci and the MMTV(HeJ) exogenous virus from the C3H mouse. The MMTV sag gene cloned from IL-10-/- spleen encoded the MTV-9 superantigen that preferentially activates T-cell receptor Vβ-12 subsets, which were expanded in the IL-10-/- versus the SvEv colon. Evidence of MMTV cellular immune responses to MMTV Gag peptides was observed in the IL-10-/- splenocytes with amplified interferon-γ production versus the SvEv wild type. To address the hypothesis that MMTV may contribute to colitis, we used HIV reverse transcriptase inhibitors, tenofovir and emtricitabine, and the HIV protease inhibitor, lopinavir boosted with ritonavir, for 12-week treatment versus placebo. The combination antiretroviral therapy with known activity against MMTV was associated with reduced colonic MMTV RNA and improved histological score in IL-10-/- mice, as well as diminished secretion of pro-inflammatory cytokines and modulation of the microbiome associated with colitis. CONCLUSIONS This study suggests that immunogenetically manipulated mice with deletion of IL-10 may have reduced capacity to contain MMTV infection in a mouse-strain-specific manner, and the antiviral inflammatory responses may contribute to the complexity of IBD with the development of colitis and dysbiosis. Video Abstract.
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Affiliation(s)
- Heather Armstrong
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Internal Medicine, University of Manitoba, Winnipeg, Canada
| | - Mandana Rahbari
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | | | - David Sharon
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Aducio Thiesen
- Department of Laboratory Medicine & Pathology, University of Alberta, Edmonton, Canada
| | - Naomi Hotte
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Ning Sun
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
- Li Ka Shing Institute for Virology, University of Alberta, Edmonton, Canada
| | - Hussain Syed
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
- Li Ka Shing Institute for Virology, University of Alberta, Edmonton, Canada
| | - Hiatem Abofayed
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
- Li Ka Shing Institute for Virology, University of Alberta, Edmonton, Canada
| | - Weiwei Wang
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Karen Madsen
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Eytan Wine
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada
- Department of Physiology, University of Alberta, Edmonton, Canada
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - Andrew Mason
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, Canada.
- Department of Medicine, University of Alberta, Edmonton, Canada.
- Li Ka Shing Institute for Virology, University of Alberta, Edmonton, Canada.
- Division of Gastroenterology, University of Alberta, Edmonton, AB, T6G 2E1, Canada.
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15
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Hofland T, Danelli L, Cornish G, Donnarumma T, Hunt DM, de Carvalho LPS, Kassiotis G. CD4 + T cell memory is impaired by species-specific cytotoxic differentiation, but not by TCF-1 loss. Front Immunol 2023; 14:1168125. [PMID: 37122720 PMCID: PMC10140371 DOI: 10.3389/fimmu.2023.1168125] [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: 02/17/2023] [Accepted: 03/30/2023] [Indexed: 05/02/2023] Open
Abstract
CD4+ T cells are typically considered as 'helper' or 'regulatory' populations that support and orchestrate the responses of other lymphocytes. However, they can also develop potent granzyme (Gzm)-mediated cytotoxic activity and CD4+ cytotoxic T cells (CTLs) have been amply documented both in humans and in mice, particularly in the context of human chronic infection and cancer. Despite the established description of CD4+ CTLs, as well as of the critical cytotoxic activity they exert against MHC class II-expressing targets, their developmental and memory maintenance requirements remain elusive. This is at least in part owing to the lack of a murine experimental system where CD4+ CTLs are stably induced. Here, we show that viral and bacterial vectors encoding the same epitope induce distinct CD4+ CTL responses in challenged mice, all of which are nevertheless transient in nature and lack recall properties. Consistent with prior reports, CD4+ CTL differentiation is accompanied by loss of TCF-1 expression, a transcription factor considered essential for memory T cell survival. Using genetic ablation of Tcf7, which encodes TCF-1, at the time of CD4+ T cell activation, we further show that, contrary to observations in CD8+ T cells, continued expression of TCF-1 is not required for CD4+ T cell memory survival. Whilst Tcf7-deficient CD4+ T cells persisted normally following retroviral infection, the CD4+ CTL subset still declined, precluding conclusive determination of the requirement for TCF-1 for murine CD4+ CTL survival. Using xenotransplantation of human CD4+ T cells into murine recipients, we demonstrate that human CD4+ CTLs develop and persist in the same experimental conditions where murine CD4+ CTLs fail to persist. These observations uncover a species-specific defect in murine CD4+ CTL persistence with implications for their use as a model system.
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Affiliation(s)
- Tom Hofland
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Luca Danelli
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Georgina Cornish
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Tiziano Donnarumma
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Deborah M. Hunt
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Luiz P. S. de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | - George Kassiotis
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, United Kingdom
- *Correspondence: George Kassiotis,
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16
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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.
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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, ;
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17
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Schumann T, Ramon SC, Schubert N, Mayo MA, Hega M, Maser KI, Ada SR, Sydow L, Hajikazemi M, Badstübner M, Müller P, Ge Y, Shakeri F, Buness A, Rupf B, Lienenklaus S, Utess B, Muhandes L, Haase M, Rupp L, Schmitz M, Gramberg T, Manel N, Hartmann G, Zillinger T, Kato H, Bauer S, Gerbaulet A, Paeschke K, Roers A, Behrendt R. Deficiency for SAMHD1 activates MDA5 in a cGAS/STING-dependent manner. J Exp Med 2022; 220:213670. [PMID: 36346347 PMCID: PMC9648672 DOI: 10.1084/jem.20220829] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 09/01/2022] [Accepted: 10/06/2022] [Indexed: 11/09/2022] Open
Abstract
Defects in nucleic acid metabolizing enzymes can lead to spontaneous but selective activation of either cGAS/STING or RIG-like receptor (RLR) signaling, causing type I interferon-driven inflammatory diseases. In these pathophysiological conditions, activation of the DNA sensor cGAS and IFN production are linked to spontaneous DNA damage. Physiological, or tonic, IFN signaling on the other hand is essential to functionally prime nucleic acid sensing pathways. Here, we show that low-level chronic DNA damage in mice lacking the Aicardi-Goutières syndrome gene SAMHD1 reduced tumor-free survival when crossed to a p53-deficient, but not to a DNA mismatch repair-deficient background. Increased DNA damage did not result in higher levels of type I interferon. Instead, we found that the chronic interferon response in SAMHD1-deficient mice was driven by the MDA5/MAVS pathway but required functional priming through the cGAS/STING pathway. Our work positions cGAS/STING upstream of tonic IFN signaling in Samhd1-deficient mice and highlights an important role of the pathway in physiological and pathophysiological innate immune priming.
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Affiliation(s)
- Tina Schumann
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Santiago Costas Ramon
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Nadja Schubert
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Mohamad Aref Mayo
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Melanie Hega
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Katharina Isabell Maser
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Servi-Remzi Ada
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lukas Sydow
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Mona Hajikazemi
- Clinic of Internal Medicine III, Oncology, Hematology, Rheumatology and Clinical Immunology, University Hospital Bonn, Bonn, Germany
| | - Markus Badstübner
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Patrick Müller
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Yan Ge
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany,Institute for Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Farhad Shakeri
- Institute for Medical Biometry, Informatics and Epidemiology, Medical Faculty, University of Bonn, Bonn, Germany,Institute for Genomic Statistics and Bioinformatics, Medical Faculty, University of Bonn, Bonn, Germany
| | - Andreas Buness
- Institute for Medical Biometry, Informatics and Epidemiology, Medical Faculty, University of Bonn, Bonn, Germany,Institute for Genomic Statistics and Bioinformatics, Medical Faculty, University of Bonn, Bonn, Germany
| | - Benjamin Rupf
- Institute for Immunology, Philipps-University Marburg, Marburg, Germany
| | - Stefan Lienenklaus
- Institute of Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Barbara Utess
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lina Muhandes
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany,Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Michael Haase
- Department of Pediatric Surgery, University Hospital Dresden, Dresden, Germany
| | - Luise Rupp
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Marc Schmitz
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany,National Center for Tumor Diseases, Partner Site Dresden, Dresden, Germany,German Cancer Consortium, Partner Site Dresden, and German Cancer Research Center, Heidelberg, Germany
| | - Thomas Gramberg
- Institute of Clinical and Molecular Virology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Nicolas Manel
- Institut national de la santé et de la recherche médicale U932, Institut Curie, Paris Sciences et Lettres Research University, Paris, France
| | - Gunther Hartmann
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Thomas Zillinger
- Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Hiroki Kato
- Institute of Cardiovascular Immunology, Medical Faculty, University Hospital Bonn, Bonn, Germany
| | - Stefan Bauer
- Institute for Immunology, Philipps-University Marburg, Marburg, Germany
| | - Alexander Gerbaulet
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Katrin Paeschke
- Clinic of Internal Medicine III, Oncology, Hematology, Rheumatology and Clinical Immunology, University Hospital Bonn, Bonn, Germany
| | - Axel Roers
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany,Institute for Immunology, University Hospital Heidelberg, Heidelberg, Germany
| | - Rayk Behrendt
- Institute for Immunology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany,Institute for Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany,Correspondence to Rayk Behrendt:
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18
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Gut commensal bacteria enhance pathogenesis of a tumorigenic murine retrovirus. Cell Rep 2022; 40:111341. [PMID: 36103821 DOI: 10.1016/j.celrep.2022.111341] [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: 02/07/2022] [Revised: 05/24/2022] [Accepted: 08/18/2022] [Indexed: 11/20/2022] Open
Abstract
The influence of the microbiota on viral transmission and replication is well appreciated. However, its impact on retroviral pathogenesis outside of transmission/replication control remains unknown. Using murine leukemia virus (MuLV), we found that some commensal bacteria promoted the development of leukemia induced by this retrovirus. The promotion of leukemia development by commensals is due to suppression of the adaptive immune response through upregulation of several negative regulators of immunity. These negative regulators include Serpinb9b and Rnf128, which are associated with a poor prognosis of some spontaneous human cancers. Upregulation of Serpinb9b is mediated by sensing of bacteria by the NOD1/NOD2/RIPK2 pathway. This work describes a mechanism by which the microbiota enhances tumorigenesis within gut-distant organs and points at potential targets for cancer therapy.
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19
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Convergent evolution of antiviral machinery derived from endogenous retrovirus truncated envelope genes in multiple species. Proc Natl Acad Sci U S A 2022; 119:e2114441119. [PMID: 35749360 PMCID: PMC9245640 DOI: 10.1073/pnas.2114441119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Host genetic resistance to viral infection controls the pathogenicity and epidemic dynamics of infectious diseases. Refrex-1 is a restriction factor against feline leukemia virus subgroup D (FeLV-D) and an endogenous retrovirus (ERV) in domestic cats (ERV-DC). Refrex-1 is encoded by a subset of ERV-DC loci with truncated envelope genes and secreted from cells as a soluble protein. Here, we identified the copper transporter CTR1 as the entry receptor for FeLV-D and genotype I ERV-DCs. We also identified CTR1 as a receptor for primate ERVs from crab-eating macaques and rhesus macaques, which were found in a search of intact envelope genes capable of forming infectious viruses. Refrex-1 counteracted infection by FeLV-D and ERV-DCs via competition for the entry receptor CTR1; the antiviral effects extended to primate ERVs with CTR1-dependent entry. Furthermore, truncated ERV envelope genes found in chimpanzee, bonobo, gorilla, crab-eating macaque, and rhesus macaque genomes could also block infection by feline and primate retroviruses. Genetic analyses showed that these ERV envelope genes were acquired in a species- or genus-specific manner during host evolution. These results indicated that soluble envelope proteins could suppress retroviral infection across species boundaries, suggesting that they function to control retroviral spread. Our findings revealed that several mammalian species acquired antiviral machinery from various ancient retroviruses, leading to convergent evolution for host defense.
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20
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Congy-Jolivet N, Cenac C, Dellacasagrande J, Puissant-Lubrano B, Apoil PA, Guedj K, Abbas F, Laffont S, Sourdet S, Guyonnet S, Nourhashemi F, Guéry JC, Blancher A. Monocytes are the main source of STING-mediated IFN-α production. EBioMedicine 2022; 80:104047. [PMID: 35561451 PMCID: PMC9108881 DOI: 10.1016/j.ebiom.2022.104047] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/12/2022] [Accepted: 04/22/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Type I interferon (IFN-I) production by plasmacytoid dendritic cells (pDCs) occurs during viral infection, in response to Toll-like receptor 7 (TLR7) stimulation and is more vigorous in females than in males. Whether this sex bias persists in ageing people is currently unknown. In this study, we investigated the effect of sex and aging on IFN-α production induced by PRR agonist ligands. METHODS In a large cohort of individuals from 19 to 97 years old, we measured the production of IFN-α and inflammatory cytokines in whole-blood upon stimulation with either R-848, ODN M362 CpG-C, or cGAMP, which activate the TLR7/8, TLR9 or STING pathways, respectively. We further characterized the cellular sources of IFN-α. FINDINGS We observed a female predominance in IFN-α production by pDCs in response to TLR7 or TLR9 ligands. The higher TLR7-driven IFN-α production in females was robustly maintained across ages, including the elderly. The sex-bias in TLR9-driven interferon production was lost after age 60, which correlated with the decline in circulating pDCs. By contrast, STING-driven IFN-α production was similar in both sexes, preserved with aging, and correlated with circulating monocyte numbers. Indeed, monocytes were the primary cellular source of IFN-α in response to cGAMP. INTERPRETATION We show that the sex bias in the TLR7-induced IFN-I production is strongly maintained through ages, and identify monocytes as the main source of IFN-I production via STING pathway. FUNDING This work was supported by grants from Région Occitanie/Pyrénées-Méditerranée (#12052910, Inspire Program #1901175), University Paul Sabatier, and the European Regional Development Fund (MP0022856).
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Affiliation(s)
- Nicolas Congy-Jolivet
- Laboratoire d'Immunologie, CHU de Toulouse, Institut Fédératif de Biologie, Hôpital Purpan, Toulouse, France
| | - Claire Cenac
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITY), INSERM UMR1291, CNRS, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | | | - Bénédicte Puissant-Lubrano
- Laboratoire d'Immunologie, CHU de Toulouse, Institut Fédératif de Biologie, Hôpital Purpan, Toulouse, France
| | - Pol André Apoil
- Laboratoire d'Immunologie, CHU de Toulouse, Institut Fédératif de Biologie, Hôpital Purpan, Toulouse, France
| | - Kevin Guedj
- Laboratoire d'Immunologie, CHU de Toulouse, Institut Fédératif de Biologie, Hôpital Purpan, Toulouse, France
| | - Flora Abbas
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITY), INSERM UMR1291, CNRS, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | - Sophie Laffont
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITY), INSERM UMR1291, CNRS, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | - Sandrine Sourdet
- Gérontopôle de Toulouse, Département de Médecine Interne et Gérontologie Clinique, CHU de Toulouse, Toulouse, France
| | - Sophie Guyonnet
- Gérontopôle de Toulouse, Département de Médecine Interne et Gérontologie Clinique, CHU de Toulouse, Toulouse, France
| | - Fati Nourhashemi
- Gérontopôle de Toulouse, Département de Médecine Interne et Gérontologie Clinique, CHU de Toulouse, Toulouse, France; Maintain Aging Research team, CERPOP, INSERM, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | - Jean-Charles Guéry
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITY), INSERM UMR1291, CNRS, Université de Toulouse, Université Paul Sabatier, Toulouse, France.
| | - Antoine Blancher
- Laboratoire d'Immunologie, CHU de Toulouse, Institut Fédératif de Biologie, Hôpital Purpan, Toulouse, France; Institut Toulousain des Maladies Infectieuses et Inflammatoires (INFINITY), INSERM UMR1291, CNRS, Université de Toulouse, Université Paul Sabatier, Toulouse, France.
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21
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Establishment of CRFK cells for vaccine production by inactivating endogenous retrovirus with TALEN technology. Sci Rep 2022; 12:6641. [PMID: 35477976 PMCID: PMC9046391 DOI: 10.1038/s41598-022-10497-1] [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: 11/02/2021] [Accepted: 03/21/2022] [Indexed: 11/23/2022] Open
Abstract
Endogenous retroviruses (ERVs) are retroviral sequences present in the host genomes. Although most ERVs are inactivated, some are produced as replication-competent viruses from host cells. We previously reported that several live-attenuated vaccines for companion animals prepared using the Crandell-Rees feline kidney (CRFK) cell line were contaminated with a replication-competent feline ERV termed RD-114 virus. We also found that the infectious RD-114 virus can be generated by recombination between multiple RD-114 virus-related proviruses (RDRSs) in CRFK cells. In this study, we knocked out RDRS env genes using the genome-editing tool TAL Effector Nuclease (TALEN) to reduce the risk of contamination by infectious ERVs in vaccine products. As a result, we succeeded in establishing RDRS knockout CRFK cells (RDKO_CRFK cells) that do not produce infectious RD-114 virus. The growth kinetics of feline herpesvirus type 1, calicivirus, and panleukopenia virus in RDKO_CRFK cells differed from those in parental cells, but all of them showed high titers exceeding 107 TCID50/mL. Infectious RD-114 virus was undetectable in the viral stocks propagated in RDKO_CRFK cells. This study suggested that RDRS env gene-knockout CRFK cells will be useful as a cell line for the manufacture of live-attenuated vaccines or biological substances with no risk of contamination with infectious ERV.
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22
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Fontes F, Rocha S, Sánchez R, Pessina P, Sebastian M, Benavides F, Breijo M. Detection of high antibodies titers against rat leukemia virus in an outbreak of reproductive disorders and lymphomas in Wistar rats. Lab Anim 2022; 56:437-445. [PMID: 35360996 DOI: 10.1177/00236772221085356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Young female Wistar rats from a specific pathogen free breeding colony presented an outbreak of infertility along with neurological symptoms and malignant lymphomas. We evaluated the presence and the potential role of the rat leukemia virus (RaLV) in the disease because these clinical signs could be compatible with a retrovirus. RaLV is a mammalian type C endogenous retrovirus initially isolated from in vitro Sprague-Dawley rat embryo cultures. There are no reports of clinical disease in rats associated with this virus, and little is known about its interaction with the host. Using reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay, we studied the synthesis of the viral particles and the development of an immune response against the virus in this rat colony. The results showed that healthy and diseased Wistar rats synthetized viral RNA but only diseased animals developed a detectable immune response against RaLV envelop protein. Furthermore, rats with lymphomas tended to have higher titers of antibodies against RaLV epitopes than those with infertility or neurological symptoms. The results suggest that increases in the RaLV infectious particle loads could be involved in the development of lymphomas in young rats. The potential causes of RaLV reactivation are discussed.
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Affiliation(s)
- Florencia Fontes
- Unidad de Reactivos y Biomodelos de Experimentación, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Sergio Rocha
- Unidad de Reactivos y Biomodelos de Experimentación, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Rosina Sánchez
- Laboratorio de Análisis Clínicos, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - Paula Pessina
- Laboratorio de Análisis Clínicos, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - Manu Sebastian
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, USA
| | - Fernando Benavides
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, USA
| | - Martín Breijo
- Unidad de Reactivos y Biomodelos de Experimentación, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
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23
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Jayewickreme R, Mao T, Philbrick W, Kong Y, Treger RS, Lu P, Rakib T, Dong H, Dang-Lawson M, Guild WA, Lau TJ, Iwasaki A, Tokuyama M. Endogenous Retroviruses Provide Protection Against Vaginal HSV-2 Disease. Front Immunol 2022; 12:758721. [PMID: 35058919 PMCID: PMC8764156 DOI: 10.3389/fimmu.2021.758721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022] Open
Abstract
Endogenous retroviruses (ERVs) are genomic sequences that originated from retroviruses and are present in most eukaryotic genomes. Both beneficial and detrimental functions are attributed to ERVs, but whether ERVs contribute to antiviral immunity is not well understood. Here, we used herpes simplex virus type 2 (HSV-2) infection as a model and found that Toll-like receptor 7 (Tlr7 -/-) deficient mice that have high systemic levels of infectious ERVs are protected from intravaginal HSV-2 infection and disease, compared to wildtype C57BL/6 mice. We deleted the endogenous ecotropic murine leukemia virus (Emv2) locus on the Tlr7 -/- background (Emv2 -/- Tlr7 -/-) and found that Emv2 -/- Tlr7 -/- mice lose protection against HSV-2 infection. Intravaginal application of purified ERVs from Tlr7-/- mice prior to HSV-2 infection delays disease in both wildtype and highly susceptible interferon-alpha receptor-deficient (Ifnar1- /-) mice. However, intravaginal ERV treatment did not protect Emv2-/-Tlr7-/- mice from HSV-2 disease, suggesting that the protective mechanism mediated by exogenous ERV treatment may differ from that of constitutively and systemically expressed ERVs in Tlr7-/- mice. We did not observe enhanced type I interferon (IFN-I) signaling in the vaginal tissues from Tlr7-/- mice, and instead found enrichment in genes associated with extracellular matrix organization. Together, our results revealed that constitutive and/or systemic expression of ERVs protect mice against vaginal HSV-2 infection and delay disease.
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Affiliation(s)
- Radeesha Jayewickreme
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Tianyang Mao
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - William Philbrick
- Department of Internal Medicine, Section of Endocrinology, Yale School of Medicine, New Haven, CT, United States
| | - Yong Kong
- Department of Molecular Biophysics and Biochemistry, W.M. Keck Foundation Biotechnology Resource Laboratory, Yale University School of Medicine, New Haven, CT, United States
| | - Rebecca S Treger
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Peiwen Lu
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Tasfia Rakib
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Huiping Dong
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - May Dang-Lawson
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, Vancouver, BC, Canada
| | - W Austin Guild
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Tatiana J Lau
- Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Akiko Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States.,Howard Hughes Medical Institute, Chevy Chase, MD, United States
| | - Maria Tokuyama
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States.,Department of Microbiology and Immunology, Life Sciences Institute, The University of British Columbia, Vancouver, BC, Canada
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24
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Guo P, Liu Y, Geng F, Daman AW, Liu X, Zhong L, Ravishankar A, Lis R, Durán JGB, Itkin T, Tang F, Zhang T, Xiang J, Shido K, Ding BS, Wen D, Josefowicz SZ, Rafii S. Histone variant H3.3 maintains adult haematopoietic stem cell homeostasis by enforcing chromatin adaptability. Nat Cell Biol 2022; 24:99-111. [PMID: 34961794 PMCID: PMC9166935 DOI: 10.1038/s41556-021-00795-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 10/14/2021] [Indexed: 01/25/2023]
Abstract
Histone variants and the associated post-translational modifications that govern the stemness of haematopoietic stem cells (HSCs) and differentiation thereof into progenitors (HSPCs) have not been well defined. H3.3 is a replication-independent H3 histone variant in mammalian systems that is enriched at both H3K4me3- and H3K27me3-marked bivalent genes as well as H3K9me3-marked endogenous retroviral repeats. Here we show that H3.3, but not its chaperone Hira, prevents premature HSC exhaustion and differentiation into granulocyte-macrophage progenitors. H3.3-null HSPCs display reduced expression of stemness and lineage-specific genes with a predominant gain of H3K27me3 marks at their promoter regions. Concomitantly, loss of H3.3 leads to a reduction of H3K9me3 marks at endogenous retroviral repeats, opening up binding sites for the interferon regulatory factor family of transcription factors, allowing the survival of rare, persisting H3.3-null HSCs. We propose a model whereby H3.3 maintains adult HSC stemness by safeguarding the delicate interplay between H3K27me3 and H3K9me3 marks, enforcing chromatin adaptability.
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Affiliation(s)
- Peipei Guo
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA. .,Fibrosis Research Center, Mount Sinai-National Jewish Respiratory Institute, Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Ying Liu
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA.,These authors contributed equally: Peipei Guo, Ying Liu
| | - Fuqiang Geng
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Andrew W. Daman
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Xiaoyu Liu
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA.,Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Liangwen Zhong
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Arjun Ravishankar
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Raphael Lis
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA.,Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA
| | - José Gabriel Barcia Durán
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Tomer Itkin
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Fanying Tang
- Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA.,Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, USA.,Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
| | - Tuo Zhang
- Weill Cornell Genomics Core Facility, New York, NY, USA
| | - Jenny Xiang
- Weill Cornell Genomics Core Facility, New York, NY, USA
| | - Koji Shido
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA
| | - Bi-sen Ding
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA.,Fibrosis Research Center, Mount Sinai–National Jewish Respiratory Institute, Division of Pulmonary, Critical Care and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Duancheng Wen
- Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine, Weill Cornell Medicine, New York, NY, USA.
| | - Steven Z. Josefowicz
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Shahin Rafii
- Department of Medicine, Division of Regenerative Medicine, Ansary Stem Cell Institute, Weill Cornell Medicine, New York, NY, USA.
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Pearson JA, Voisey AC, Boest-Bjerg K, Wong FS, Wen L. Circadian Rhythm Modulation of Microbes During Health and Infection. Front Microbiol 2021; 12:721004. [PMID: 34512600 PMCID: PMC8430216 DOI: 10.3389/fmicb.2021.721004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 08/05/2021] [Indexed: 12/11/2022] Open
Abstract
Circadian rhythms, referring to 24-h daily oscillations in biological and physiological processes, can significantly regulate host immunity to pathogens, as well as commensals, resulting in altered susceptibility to disease development. Furthermore, vaccination responses to microbes have also shown time-of-day-dependent changes in the magnitude of protective immune responses elicited in the host. Thus, understanding host circadian rhythm effects on both gut bacteria and viruses during infection is important to minimize adverse effects on health and identify optimal times for therapeutic administration to maximize therapeutic success. In this review, we summarize the circadian modulations of gut bacteria, viruses and their interactions, both in health and during infection. We also discuss the importance of chronotherapy (i.e., time-specific therapy) as a plausible therapeutic administration strategy to enhance beneficial therapeutic responses.
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Affiliation(s)
- James Alexander Pearson
- Diabetes Research Group, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Alexander Christopher Voisey
- Diabetes Research Group, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Kathrine Boest-Bjerg
- Diabetes Research Group, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - F. Susan Wong
- Diabetes Research Group, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Li Wen
- Section of Endocrinology, Internal Medicine, School of Medicine, Yale University, New Haven, CT, United States
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26
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Young GR, Ferron AKW, Panova V, Eksmond U, Oliver PL, Kassiotis G, Stoye JP. Gv1, a Zinc Finger Gene Controlling Endogenous MLV Expression. Mol Biol Evol 2021; 38:2468-2474. [PMID: 33560369 PMCID: PMC8136514 DOI: 10.1093/molbev/msab039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The genomes of inbred mice harbor around 50 endogenous murine leukemia virus (MLV) loci, although the specific complement varies greatly between strains. The Gv1 locus is known to control the transcription of endogenous MLVs and to be the dominant determinant of cell-surface presentation of MLV envelope, the GIX antigen. Here, we identify a single Krüppel-associated box zinc finger protein (ZFP) gene, Zfp998, as Gv1 and show it to be necessary and sufficient to determine the GIX+ phenotype. By long-read sequencing of bacterial artificial chromosome clones from 129 mice, the prototypic GIX+ strain, we reveal the source of sufficiency and deficiency as splice-acceptor variations and highlight the varying origins of the chromosomal region encompassing Gv1. Zfp998 becomes the second identified ZFP gene responsible for epigenetic suppression of endogenous MLVs in mice and further highlights the prominent role of this gene family in control of endogenous retroviruses.
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Affiliation(s)
- George R Young
- Retrovirus-host Interactions Laboratory, The Francis Crick Institute, London, UK
| | - Aaron K W Ferron
- Retrovirus-host Interactions Laboratory, The Francis Crick Institute, London, UK
| | - Veera Panova
- Retroviral Immunology, The Francis Crick Institute, London, UK
| | - Urszula Eksmond
- Retroviral Immunology, The Francis Crick Institute, London, UK
| | | | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, London, UK.,Department of Infectious Disease, Imperial College London, London, UK
| | - Jonathan P Stoye
- Retrovirus-host Interactions Laboratory, The Francis Crick Institute, London, UK.,Department of Infectious Disease, Imperial College London, London, UK
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27
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Lima-Junior DS, Krishnamurthy SR, Bouladoux N, Collins N, Han SJ, Chen EY, Constantinides MG, Link VM, Lim AI, Enamorado M, Cataisson C, Gil L, Rao I, Farley TK, Koroleva G, Attig J, Yuspa SH, Fischbach MA, Kassiotis G, Belkaid Y. Endogenous retroviruses promote homeostatic and inflammatory responses to the microbiota. Cell 2021; 184:3794-3811.e19. [PMID: 34166614 PMCID: PMC8381240 DOI: 10.1016/j.cell.2021.05.020] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 04/10/2021] [Accepted: 05/14/2021] [Indexed: 02/06/2023]
Abstract
The microbiota plays a fundamental role in regulating host immunity. However, the processes involved in the initiation and regulation of immunity to the microbiota remain largely unknown. Here, we show that the skin microbiota promotes the discrete expression of defined endogenous retroviruses (ERVs). Keratinocyte-intrinsic responses to ERVs depended on cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes protein (STING) signaling and promoted the induction of commensal-specific T cells. Inhibition of ERV reverse transcription significantly impacted these responses, resulting in impaired immunity to the microbiota and its associated tissue repair function. Conversely, a lipid-enriched diet primed the skin for heightened ERV- expression in response to commensal colonization, leading to increased immune responses and tissue inflammation. Together, our results support the idea that the host may have co-opted its endogenous virome as a means to communicate with the exogenous microbiota, resulting in a multi-kingdom dialog that controls both tissue homeostasis and inflammation.
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Affiliation(s)
- Djalma S Lima-Junior
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Siddharth R Krishnamurthy
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Nicolas Bouladoux
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Nicholas Collins
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Seong-Ji Han
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Erin Y Chen
- Department of Bioengineering and ChEM-H, Stanford University, Stanford, CA 94305, USA
| | - Michael G Constantinides
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Verena M Link
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; NIH Center for Human Immunology, Bethesda, MD 20896, USA
| | - Ai Ing Lim
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michel Enamorado
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christophe Cataisson
- In Vitro Pathogenesis Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Louis Gil
- NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Indira Rao
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Immunology Graduate Group, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Taylor K Farley
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | | | - Jan Attig
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; Department of Medicine, Faculty of Medicine, Imperial College London, London W2 1PG, UK
| | - Stuart H Yuspa
- In Vitro Pathogenesis Section, Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael A Fischbach
- Department of Bioengineering and ChEM-H, Stanford University, Stanford, CA 94305, USA
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; Department of Medicine, Faculty of Medicine, Imperial College London, London W2 1PG, UK
| | - Yasmine Belkaid
- Metaorganism Immunity Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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28
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Activation of Endogenous Retrovirus, Brain Infections and Environmental Insults in Neurodegeneration and Alzheimer's Disease. Int J Mol Sci 2021; 22:ijms22147263. [PMID: 34298881 PMCID: PMC8303979 DOI: 10.3390/ijms22147263] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/29/2021] [Accepted: 07/03/2021] [Indexed: 12/18/2022] Open
Abstract
Chronic neurodegenerative diseases are complex, and their pathogenesis is uncertain. Alzheimer’s disease (AD) is a neurodegenerative brain alteration that is responsible for most dementia cases in the elderly. AD etiology is still uncertain; however, chronic neuroinflammation is a constant component of brain pathology. Infections have been associated with several neurological diseases and viruses of the Herpes family appear to be a probable cause of AD neurodegenerative alterations. Several different factors may contribute to the AD clinical progression. Exogeneous viruses or other microbes and environmental pollutants may directly induce neurodegeneration by activating brain inflammation. In this paper, we suggest that exogeneous brain insults may also activate retrotransposons and silent human endogenous retroviruses (HERVs). The initial inflammation of small brain areas induced by virus infections or other brain insults may activate HERV dis-regulation that contributes to neurodegenerative mechanisms. Chronic HERV activation in turn may cause progressive neurodegeneration that thereafter merges in cognitive impairment and dementia in genetically susceptible people. Specific treatment for exogenous end endogenous pathogens and decreasing pollutant exposure may show beneficial effect in early intervention protocol to prevent the progression of cognitive deterioration in the elderly.
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29
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Lidak T, Baloghova N, Korinek V, Sedlacek R, Balounova J, Kasparek P, Cermak L. CRL4-DCAF12 Ubiquitin Ligase Controls MOV10 RNA Helicase during Spermatogenesis and T Cell Activation. Int J Mol Sci 2021; 22:5394. [PMID: 34065512 PMCID: PMC8161014 DOI: 10.3390/ijms22105394] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/12/2021] [Accepted: 05/16/2021] [Indexed: 12/27/2022] Open
Abstract
Multisubunit cullin-RING ubiquitin ligase 4 (CRL4)-DCAF12 recognizes the C-terminal degron containing acidic amino acid residues. However, its physiological roles and substrates are largely unknown. Purification of CRL4-DCAF12 complexes revealed a wide range of potential substrates, including MOV10, an "ancient" RNA-induced silencing complex (RISC) complex RNA helicase. We show that DCAF12 controls the MOV10 protein level via its C-terminal motif in a proteasome- and CRL-dependent manner. Next, we generated Dcaf12 knockout mice and demonstrated that the DCAF12-mediated degradation of MOV10 is conserved in mice and humans. Detailed analysis of Dcaf12-deficient mice revealed that their testes produce fewer mature sperms, phenotype accompanied by elevated MOV10 and imbalance in meiotic markers SCP3 and γ-H2AX. Additionally, the percentages of splenic CD4+ T and natural killer T (NKT) cell populations were significantly altered. In vitro, activated Dcaf12-deficient T cells displayed inappropriately stabilized MOV10 and increased levels of activated caspases. In summary, we identified MOV10 as a novel substrate of CRL4-DCAF12 and demonstrated the biological relevance of the DCAF12-MOV10 pathway in spermatogenesis and T cell activation.
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Affiliation(s)
- Tomas Lidak
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 42 Vestec, Czech Republic; (T.L.); (N.B.); (V.K.)
- Faculty of Science, Charles University, 128 00 Prague, Czech Republic
| | - Nikol Baloghova
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 42 Vestec, Czech Republic; (T.L.); (N.B.); (V.K.)
| | - Vladimir Korinek
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 42 Vestec, Czech Republic; (T.L.); (N.B.); (V.K.)
- Laboratory of Cell and Developmental Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 42 Vestec, Czech Republic
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 50 Vestec, Czech Republic; (R.S.); (J.B.); (P.K.)
| | - Jana Balounova
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 50 Vestec, Czech Republic; (R.S.); (J.B.); (P.K.)
| | - Petr Kasparek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 50 Vestec, Czech Republic; (R.S.); (J.B.); (P.K.)
| | - Lukas Cermak
- Laboratory of Cancer Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 252 42 Vestec, Czech Republic; (T.L.); (N.B.); (V.K.)
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30
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Jansz N, Faulkner GJ. Endogenous retroviruses in the origins and treatment of cancer. Genome Biol 2021; 22:147. [PMID: 33971937 PMCID: PMC8108463 DOI: 10.1186/s13059-021-02357-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/21/2021] [Indexed: 02/07/2023] Open
Abstract
Endogenous retroviruses (ERVs) are emerging as promising therapeutic targets in cancer. As remnants of ancient retroviral infections, ERV-derived regulatory elements coordinate expression from gene networks, including those underpinning embryogenesis and immune cell function. ERV activation can promote an interferon response, a phenomenon termed viral mimicry. Although ERV expression is associated with cancer, and provisionally with autoimmune and neurodegenerative diseases, ERV-mediated inflammation is being explored as a way to sensitize tumors to immunotherapy. Here we review ERV co-option in development and innate immunity, the aberrant contribution of ERVs to tumorigenesis, and the wider biomedical potential of therapies directed at ERVs.
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Affiliation(s)
- Natasha Jansz
- Mater Research Institute - University of Queensland, TRI Building, Woolloongabba, QLD, 4102, Australia.
| | - Geoffrey J Faulkner
- Mater Research Institute - University of Queensland, TRI Building, Woolloongabba, QLD, 4102, Australia. .,Queensland Brain Institute, University of Queensland, Brisbane, QLD, 4072, Australia.
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31
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Kayesh MEH, Hashem MA, Tsukiyama-Kohara K. Toll-Like Receptor and Cytokine Responses to Infection with Endogenous and Exogenous Koala Retrovirus, and Vaccination as a Control Strategy. Curr Issues Mol Biol 2021; 43:52-64. [PMID: 33946297 PMCID: PMC8928999 DOI: 10.3390/cimb43010005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 02/07/2023] Open
Abstract
Koala populations are currently declining and under threat from koala retrovirus (KoRV) infection both in the wild and in captivity. KoRV is assumed to cause immunosuppression and neoplastic diseases, favoring chlamydiosis in koalas. Currently, 10 KoRV subtypes have been identified, including an endogenous subtype (KoRV-A) and nine exogenous subtypes (KoRV-B to KoRV-J). The host’s immune response acts as a safeguard against pathogens. Therefore, a proper understanding of the immune response mechanisms against infection is of great importance for the host’s survival, as well as for the development of therapeutic and prophylactic interventions. A vaccine is an important protective as well as being a therapeutic tool against infectious disease, and several studies have shown promise for the development of an effective vaccine against KoRV. Moreover, CRISPR/Cas9-based genome editing has opened a new window for gene therapy, and it appears to be a potential therapeutic tool in many viral infections, which could also be investigated for the treatment of KoRV infection. Here, we discuss the recent advances made in the understanding of the immune response in KoRV infection, as well as the progress towards vaccine development against KoRV infection in koalas.
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Affiliation(s)
- Mohammad Enamul Hoque Kayesh
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Department of Microbiology and Public Health, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal 8210, Bangladesh
| | - Md Abul Hashem
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Department of Health, Chattogram City Corporation, Chattogram 4000, Bangladesh
- Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
- Correspondence: ; Tel.: +81-99-285-3589
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32
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Kayesh MEH, Hashem MA, Tsukiyama-Kohara K. Toll-Like Receptor Expression Profiles in Koala ( Phascolarctos cinereus) Peripheral Blood Mononuclear Cells Infected with Multiple KoRV Subtypes. Animals (Basel) 2021; 11:ani11040983. [PMID: 33915914 PMCID: PMC8065587 DOI: 10.3390/ani11040983] [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: 02/08/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Koala retrovirus (KoRV) is a major pathogen of koala. Toll-like receptors (TLRs) are important innate immune component that are evolutionary conserved and play a crucial role in the early defense against invading pathogens. The expression profile of TLRs in KoRV infection in koalas is not characterized yet. Therefore, in this study, we characterized TLR expression patterns in koalas infected with KoRV-A only vs. KoRV-A with KoRV-B and/or -C. Using qRT-PCR, we measured TLR2–10 and TLR13 mRNA expression in peripheral blood mononuclear cells (PBMCs) and/or tissues from captive koalas in Japanese zoos. We observed variations in TLR expression in koalas with a range of subtype infection profiles (KoRV-A only vs. KoRV-A with KoRV-B and/or -C). The findings of this study might improve our current understanding of koala’s immune response to KoRV infection. Abstract Toll-like receptors (TLRs), evolutionarily conserved pattern recognition receptors, play an important role in innate immunity by recognizing microbial pathogen-associated molecular patterns. Koala retrovirus (KoRV), a major koala pathogen, exists in both endogenous (KoRV-A) and exogenous forms (KoRV-B to J). However, the expression profile of TLRs in koalas infected with KoRV-A and other subtypes is yet to characterize. Here, we investigated TLR expression profiles in koalas with a range of subtype infection profiles (KoRV-A only vs. KoRV-A with KoRV-B and/or -C). To this end, we cloned partial sequences for TLRs (TLR2–10 and TLR13), developed real-time PCR assays, and determined TLRs mRNA expression patterns in koala PBMCs and/or tissues. All the reported TLRs for koala were expressed in PBMCs, and variations in TLR expression were observed in koalas infected with exogenous subtypes (KoRV-B and KoRV-C) compared to the endogenous subtype (KoRV-A) only, which indicates the implications of TLRs in KoRV infection. TLRs were also found to be differentially expressed in koala tissues. This is the first report of TLR expression profiles in koala, which provides insights into koala’s immune response to KoRV infection that could be utilized for the future exploitation of TLR modulators in the maintenance of koala health.
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Affiliation(s)
- Mohammad Enamul Hoque Kayesh
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Department of Microbiology and Public Health, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Barishal 8210, Bangladesh
| | - Md Abul Hashem
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Department of Health, Chattogram City Corporation, Chattogram 4000, Bangladesh
- Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Centre, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan; (M.E.H.K.); (M.A.H.)
- Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
- Correspondence: ; Tel.: +81-99-285-3589
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Römer C. Viruses and Endogenous Retroviruses as Roots for Neuroinflammation and Neurodegenerative Diseases. Front Neurosci 2021; 15:648629. [PMID: 33776642 PMCID: PMC7994506 DOI: 10.3389/fnins.2021.648629] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 02/05/2021] [Indexed: 12/15/2022] Open
Abstract
Many neurodegenerative diseases are associated with chronic inflammation in the brain and periphery giving rise to a continuous imbalance of immune processes. Next to inflammation markers, activation of transposable elements, including long intrespersed nuclear elements (LINE) elements and endogenous retroviruses (ERVs), has been identified during neurodegenerative disease progression and even correlated with the clinical severity of the disease. ERVs are remnants of viral infections in the human genome acquired during evolution. Upon activation, they produce transcripts and the phylogenetically youngest ones are still able to produce viral-like particles. In addition, ERVs can bind transcription factors and modulate immune response. Being between own and foreign, ERVs are reviewed in the context of viral infections of the central nervous system, in aging and neurodegenerative diseases. Moreover, this review tests the hypothesis that viral infection may be a trigger at the onset of neuroinflammation and that ERVs sustain the inflammatory imbalance by summarizing existing data of neurodegenerative diseases associated with viruses and/or ERVs.
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Affiliation(s)
- Christine Römer
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, The Berlin Institute for Medical Systems Biology, Berlin, Germany
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34
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Jönsson ME, Garza R, Sharma Y, Petri R, Södersten E, Johansson JG, Johansson PA, Atacho DA, Pircs K, Madsen S, Yudovich D, Ramakrishnan R, Holmberg J, Larsson J, Jern P, Jakobsson J. Activation of endogenous retroviruses during brain development causes an inflammatory response. EMBO J 2021; 40:e106423. [PMID: 33644903 PMCID: PMC8090857 DOI: 10.15252/embj.2020106423] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 01/09/2023] Open
Abstract
Endogenous retroviruses (ERVs) make up a large fraction of mammalian genomes and are thought to contribute to human disease, including brain disorders. In the brain, aberrant activation of ERVs is a potential trigger for an inflammatory response, but mechanistic insight into this phenomenon remains lacking. Using CRISPR/Cas9‐based gene disruption of the epigenetic co‐repressor protein Trim28, we found a dynamic H3K9me3‐dependent regulation of ERVs in proliferating neural progenitor cells (NPCs), but not in adult neurons. In vivo deletion of Trim28 in cortical NPCs during mouse brain development resulted in viable offspring expressing high levels of ERVs in excitatory neurons in the adult brain. Neuronal ERV expression was linked to activated microglia and the presence of ERV‐derived proteins in aggregate‐like structures. This study demonstrates that brain development is a critical period for the silencing of ERVs and provides causal in vivo evidence demonstrating that transcriptional activation of ERV in neurons results in an inflammatory response.
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Affiliation(s)
- Marie E Jönsson
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Raquel Garza
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Yogita Sharma
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Rebecca Petri
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Erik Södersten
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jenny G Johansson
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Pia A Johansson
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Diahann Am Atacho
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Karolina Pircs
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Sofia Madsen
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - David Yudovich
- Division of Molecular Medicine and Gene Therapy, Department of Laboratory Medicine and Lund Stem Cell Center, Lund University, Lund, Sweden
| | | | - Johan Holmberg
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jonas Larsson
- Division of Molecular Medicine and Gene Therapy, Department of Laboratory Medicine and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Patric Jern
- Science for Life Laboratory, Department for Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Johan Jakobsson
- Laboratory of Molecular Neurogenetics, Department of Experimental Medical Science, Wallenberg Neuroscience Center and Lund Stem Cell Center, Lund University, Lund, Sweden
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Endogenization of a Prosimian Retrovirus during Lemur Evolution. Viruses 2021; 13:v13030383. [PMID: 33673677 PMCID: PMC7997422 DOI: 10.3390/v13030383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 02/23/2021] [Indexed: 01/08/2023] Open
Abstract
Studies of viruses that coevolved with lemurs provide an opportunity to understand the basal traits of primate viruses and provide an evolutionary context for host-virus interactions. Germline integration of endogenous retroviruses (ERVs) are fossil evidence of past infections. Hence, characterization of novel ERVs provides insight into the ancient precursors of extant viruses and the evolutionary history of their hosts. Here, we report the discovery of a novel endogenous retrovirus present in the genome of a lemur, Coquerel's sifaka (Propithecus coquereli). Using next-generation sequencing, we identified and characterized the complete genome sequence of a retrovirus, named prosimian retrovirus 1 (PSRV1). Phylogenetic analyses indicate that PSRV1 is a gamma-type betaretrovirus basal to the other primate betaretroviruses and most closely related to simian retroviruses. Molecular clock analysis of PSRV1 long terminal repeat (LTR) sequences estimated the time of endogenization within 4.56 MYA (± 2.4 MYA), placing it after the divergence of Propithecus species. These results indicate that PSRV1 is an important milestone of lemur evolution during the radiation of the Propithecus genus. These findings may have implications for both human and animal health in that the acquisition of a gamma-type env gene within an endogenized betaretrovirus could facilitate a cross-species jump between vertebrate class hosts.
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Ng KW, Attig J, Bolland W, Young GR, Major J, Wrobel AG, Gamblin S, Wack A, Kassiotis G. Tissue-specific and interferon-inducible expression of nonfunctional ACE2 through endogenous retroelement co-option. Nat Genet 2020; 52:1294-1302. [PMID: 33077915 PMCID: PMC7610354 DOI: 10.1038/s41588-020-00732-8] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/29/2020] [Indexed: 01/07/2023]
Abstract
Angiotensin-converting enzyme 2 (ACE2) is an entry receptor for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and a regulator of several physiological processes. ACE2 has recently been proposed to be interferon (IFN) inducible, suggesting that SARS-CoV-2 may exploit this phenomenon to enhance viral spread and questioning the efficacy of IFN treatment in coronavirus disease 2019. Using a recent de novo transcript assembly that captured previously unannotated transcripts, we describe a new isoform of ACE2, generated by co-option of intronic retroelements as promoter and alternative exon. The new transcript, termed MIRb-ACE2, exhibits specific expression patterns across the aerodigestive and gastrointestinal tracts and is highly responsive to IFN stimulation. In contrast, canonical ACE2 expression is unresponsive to IFN stimulation. Moreover, the MIRb-ACE2 translation product is a truncated, unstable ACE2 form, lacking domains required for SARS-CoV-2 binding and is therefore unlikely to contribute to or enhance viral infection.
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Affiliation(s)
- Kevin W Ng
- Retroviral Immunology, The Francis Crick Institute, London, UK
| | - Jan Attig
- Retroviral Immunology, The Francis Crick Institute, London, UK
| | - William Bolland
- Retroviral Immunology, The Francis Crick Institute, London, UK
| | - George R Young
- Retrovirus-Host Interactions, The Francis Crick Institute, London, UK
| | - Jack Major
- Immunoregulation, The Francis Crick Institute, London, UK
| | - Antoni G Wrobel
- Structural Biology of Disease Processes, The Francis Crick Institute, London, UK
| | - Steve Gamblin
- Structural Biology of Disease Processes, The Francis Crick Institute, London, UK
| | - Andreas Wack
- Immunoregulation, The Francis Crick Institute, London, UK
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, London, UK.
- Department of Medicine, Faculty of Medicine, Imperial College London, London, UK.
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Insights into Sensing of Murine Retroviruses. Viruses 2020; 12:v12080836. [PMID: 32751803 PMCID: PMC7472155 DOI: 10.3390/v12080836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023] Open
Abstract
Retroviruses are major causes of disease in animals and human. Better understanding of the initial host immune response to these viruses could provide insight into how to limit infection. Mouse retroviruses that are endemic in their hosts provide an important genetic tool to dissect the different arms of the innate immune system that recognize retroviruses as foreign. Here, we review what is known about the major branches of the innate immune system that respond to mouse retrovirus infection, Toll-like receptors and nucleic acid sensors, and discuss the importance of these responses in activating adaptive immunity and controlling infection.
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Abstract
Fetal neurodevelopment in utero is profoundly shaped by both systemic maternal immunity and local processes at the maternal-fetal interface. Immune pathways are a critical participant in the normal physiology of pregnancy and perturbations of maternal immunity due to infections during this period have been increasingly linked to a diverse array of poor neurological outcomes, including diseases that manifest much later in postnatal life. While experimental models of maternal immune activation (MIA) have provided groundbreaking characterizations of the maternal pathways underlying pathogenesis, less commonly examined are the immune factors that serve pathogen-independent developmental functions in the embryo and fetus. In this review, we explore what is known about the in vivo role of immune factors in fetal neurodevelopment during normal pregnancy and provide an overview of how MIA perturbs the proper orchestration of this sequence of events. Finally, we discuss how the dysregulation of immune factors may contribute to the manifestation of a variety of neurological disorders.
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Affiliation(s)
- Alice Lu-Culligan
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, Connecticut 06519, USA
| | - Akiko Iwasaki
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, Connecticut 06519, USA.,Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06519, USA; .,Howard Hughes Medical Institute, Yale University, New Haven, Connecticut 06519, USA
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Abstract
Host-microbiota interactions are fundamental for the development of the immune system. Drastic changes in modern environments and lifestyles have led to an imbalance of this evolutionarily ancient process, coinciding with a steep rise in immune-mediated diseases such as autoimmune, allergic and chronic inflammatory disorders. There is an urgent need to better understand these diseases in the context of mucosal and skin microbiota. This Review discusses the mechanisms of how the microbiota contributes to the predisposition, initiation and perpetuation of immune-mediated diseases in the context of a genetically prone host. It is timely owing to the wealth of new studies that recently contributed to this field, ranging from metagenomic studies in humans and mechanistic studies of host-microorganism interactions in gnotobiotic models and in vitro systems, to molecular mechanisms with broader implications across immune-mediated diseases. We focus on the general principles, such as breaches in immune tolerance and barriers, leading to the promotion of immune-mediated diseases by gut, oral and skin microbiota. Lastly, the therapeutic avenues that either target the microbiota, the barrier surfaces or the host immune system to restore tolerance and homeostasis will be explored.
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Panova V, Attig J, Young GR, Stoye JP, Kassiotis G. Antibody-induced internalisation of retroviral envelope glycoproteins is a signal initiation event. PLoS Pathog 2020; 16:e1008605. [PMID: 32453763 PMCID: PMC7274472 DOI: 10.1371/journal.ppat.1008605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/05/2020] [Accepted: 05/05/2020] [Indexed: 12/31/2022] Open
Abstract
As obligate parasites, viruses highjack, modify and repurpose the cellular machinery for their own replication. Viral proteins have, therefore, evolved biological functions, such as signalling potential, that alter host cell physiology in ways that are still incompletely understood. Retroviral envelope glycoproteins interact with several host proteins, extracellularly with their cellular receptor and anti-envelope antibodies, and intracellularly with proteins of the cytoskeleton or sorting, endocytosis and recirculation pathways. Here, we examined the impact of endogenous retroviral envelope glycoprotein expression and interaction with host proteins, particularly antibodies, on the cell, independently of retroviral infection. We found that in the commonly used C57BL/6 substrains of mice, where murine leukaemia virus (MLV) envelope glycoproteins are expressed by several endogenous MLV proviruses, the highest expressed MLV envelope glycoprotein is under the control of an immune-responsive cellular promoter, thus linking MLV envelope glycoprotein expression with immune activation. We further showed that antibody ligation induces extensive internalisation from the plasma membrane into endocytic compartments of MLV envelope glycoproteins, which are not normally subject to constitutive endocytosis. Importantly, antibody binding and internalisation of MLV envelope glycoproteins initiates signalling cascades in envelope-expressing murine lymphocytic cell lines, leading to cellular activation. Similar effects were observed by MLV envelope glycoprotein ligation by its cellular receptor mCAT-1, and by overexpression in human lymphocytic cells, where it required an intact tyrosine-based YXXΦ motif in the envelope glycoprotein cytoplasmic tail. Together, these results suggest that signalling potential is a general property of retroviral envelope glycoproteins and, therefore, a target for intervention. The outcome of viral infection depends on the balance between host immunity and the ability of the virus to avoid, evade or subvert it. The envelope glycoproteins of diverse viruses, including retroviruses, are displayed on the surface of virions and of infected cells and thus constitute the major target of the host antibody response. Antibody responses are elicited not only against infectious viruses we acquire during our life-history, but also against the numerous retroviral envelopes encoded by our genome and acquired during our species’ life-history. In turn, viruses have evolved ways to reduce exposure of their envelope glycoproteins to the host immune system, including constitutive endocytosis or antibody-induced internalisation. Using murine leukaemia viruses as models of infectious and endogenous retroviruses, we show that antibody binding to retroviral envelopes induces extensive internalisation of the envelope-antibody complex and initiates signalling cascades, ultimately leading to transcriptional activation of envelope glycoprotein-expressing lymphocytes. We further show that expression of endogenous retroviral envelopes is coupled to physiological lymphocyte activation, integrating them with the immune response. These findings reveal an unexpected layer of interaction between the host antibody response and retroviral envelope glycoproteins, which could be considered immune receptors.
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Affiliation(s)
- Veera Panova
- Retroviral Immunology, The Francis Crick Institute, United Kingdom
| | - Jan Attig
- Retroviral Immunology, The Francis Crick Institute, United Kingdom
| | - George R. Young
- Retrovirus-Host Interactions, The Francis Crick Institute, London, United Kingdom
| | - Jonathan P. Stoye
- Retrovirus-Host Interactions, The Francis Crick Institute, London, United Kingdom
- Department of Medicine, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, United Kingdom
- Department of Medicine, Faculty of Medicine, Imperial College London, London, United Kingdom
- * E-mail:
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Abstract
Over the last decade, the interplay between the gut microbiota, the consortium of intestinal microbes that colonizes intestinal mucosal barriers, and its host immune system has been increasingly better understood. Disruption of the delicate balance between beneficial and pathogenic commensals, known as dysbiosis, contributes to a variety of chronic immunologic and metabolic diseases. Complicating this paradigm are bacterial strains that can operate paradoxically both as instigators and attenuators of inflammatory responses, depending on host background. Here, we review the role of several strains in the genus Lactobacillus within the context of autoimmune and other chronic disorders with a predominant focus on L. reuteri. While strains within this species have been shown to provide immune health benefits, they have also been demonstrated to act as a pathobiont in autoimmune-prone hosts. Beneficial functions in healthy hosts include competing with pathogenic microbes, promoting regulatory T cell development, and protecting the integrity of the gut barrier. On the other hand, certain strains can also break through a dysfunctional gut barrier, colonize internal tissues such as the spleen or liver and promote inflammatory responses in host tissues that lead to autoimmune disease. This review summarizes the manifold roles that these commensals play in the context of health and disease.
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Alcazer V, Bonaventura P, Depil S. Human Endogenous Retroviruses (HERVs): Shaping the Innate Immune Response in Cancers. Cancers (Basel) 2020; 12:cancers12030610. [PMID: 32155827 PMCID: PMC7139688 DOI: 10.3390/cancers12030610] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/02/2020] [Accepted: 03/05/2020] [Indexed: 12/18/2022] Open
Abstract
Human Endogenous Retroviruses (HERVs) are accounting for 8% of the human genome. These sequences are remnants from ancient germline infections by exogenous retroviruses. After million years of evolution and multiple integrations, HERVs have acquired many damages rendering them defective. At steady state, HERVs are mostly localized in the heterochromatin and silenced by methylation. Multiple conditions have been described to induce their reactivation, including auto-immune diseases and cancers. HERVs re-expression leads to RNA (simple and double-stranded) and DNA production (by reverse transcription), modulating the innate immune response. Some studies also argue for a role of HERVs in shaping the evolution of innate immunity, notably in the development of the interferon response. However, their exact role in the innate immune response, particularly in cancer, remains to be defined. In this review, we see how HERVs could be key-players in mounting an antitumor immune response. After a brief introduction on HERVs characteristics and biology, we review the different mechanisms by which HERVs can interact with the immune system, with a focus on the innate response. We then discuss the potential impact of HERVs expression on the innate immune response in cancer.
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Affiliation(s)
- Vincent Alcazer
- Cancer Research Center of Lyon, 69008 Lyon, France
- Department of Clinical Hematology, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, 69310 Pierre-Bénite, France
- Correspondence: (V.A.); (S.D.)
| | - Paola Bonaventura
- Cancer Research Center of Lyon, 69008 Lyon, France
- Centre Léon Bérard, 69008 Lyon, France
| | - Stephane Depil
- Cancer Research Center of Lyon, 69008 Lyon, France
- Centre Léon Bérard, 69008 Lyon, France
- Université Claude Bernard Lyon 1, 69008 Lyon, France
- ErVaccine Technologies, 69008 Lyon, France
- Correspondence: (V.A.); (S.D.)
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Abstract
Retroviruses infect a broad range of vertebrate hosts that includes amphibians, reptiles, fish, birds and mammals. In addition, a typical vertebrate genome contains thousands of loci composed of ancient retroviral sequences known as endogenous retroviruses (ERVs). ERVs are molecular remnants of ancient retroviruses and proof that the ongoing relationship between retroviruses and their vertebrate hosts began hundreds of millions of years ago. The long-term impact of retroviruses on vertebrate evolution is twofold: first, as with other viruses, retroviruses act as agents of selection, driving the evolution of host genes that block viral infection or that mitigate pathogenesis, and second, through the phenomenon of endogenization, retroviruses contribute an abundance of genetic novelty to host genomes, including unique protein-coding genes and cis-acting regulatory elements. This Review describes ERV origins, their diversity and their relationships to retroviruses and discusses the potential for ERVs to reveal virus-host interactions on evolutionary timescales. It also describes some of the many examples of cellular functions, including protein-coding genes and regulatory elements, that have evolved from ERVs.
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The association between microbial community and ileal gene expression on intestinal wall thickness alterations in chickens. Poult Sci 2020; 99:1847-1861. [PMID: 32241465 PMCID: PMC7587722 DOI: 10.1016/j.psj.2019.10.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 10/05/2019] [Accepted: 10/11/2019] [Indexed: 12/17/2022] Open
Abstract
The dynamic development of the animal intestine with a concurrent succession of microbiota and changes in microbial community and metabolite spectrum can exert far-reaching effects on host physiology. However, the precise mechanism of mutual response between microbiota and the gut is yet to be fully elucidated. Broilers with varying developmental degrees of intestinal wall thickness were selected, and they were divided into the thick group (H type) and the thin group (B type), using multiomics data integration analysis to reveal the fundamental regulatory mechanisms of gut–microbiota interplay. Our data showed, in broilers with similar body weight, the intestinal morphological parameters were improved in H type and the diversity of microbial communities is distinguishable from each other. The beneficial bacteria such as Bifidobacterium breve was increased whereas avian endogenous retrovirus EAV-HP was decreased in the H type compared with the B type. Furthermore, microbial metabolic potentials were more active, especially the biosynthesis of folate was improved in the H type. Similarly, the consolidation of absorption, immunity, metabolism, and development was noticed in the thick group. Correlation analysis indicated that the expression levels of material transport and immunomodulatory-related genes were positively correlated with the relative abundance of several probiotics such as B. breve, Lactobacillus saerimneri, and Butyricicoccus pullicaecorum. Our findings suggest that the chickens with well-developed ileal thickness own exclusive microbial composition and metabolic potential, which is closely related to small intestinal morphogenesis and homeostasis.
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46
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Abstract
Endogenous retroviruses (ERVs) consist of interspersed genomic elements derived from retroviral infections that invaded our ancestral germ lines. Notably, ERVs compose 8 to 10% of the human and mouse genomes. Until recently, ERVs were considered unimportant, so-called “junk” DNA. However, this naïve characterization has changed dramatically as distinct ERV-related functions are revealed in heath and disease. In this study, we demonstrate that chronic ERV activation is associated with cognitive impairment, measured with hippocampus-related tasks, in a mouse model. We confirm these findings in an independent mouse model of acute retroviral activation and show that cognitive deficits are mitigated in the absence of the retroviral RNA sensor protein MAVS. Our results point to an underappreciated therapeutic modality for impaired cognition. Retrotransposons compose a staggering 40% of the mammalian genome. Among them, endogenous retroviruses (ERV) represent sequences that closely resemble the proviruses created from exogenous retroviral infection. ERVs make up 8 to 10% of human and mouse genomes and range from evolutionarily ancient sequences to recent acquisitions. Studies in Drosophila have provided a causal link between genomic retroviral elements and cognitive decline; however, in mammals, the role of ERVs in learning and memory remains unclear. Here we studied 2 independent murine models for ERV activation: muMT strain (lacking B cells and antibody production) and intracerebroventricular injection of streptozotocin (ICVI-STZ). We conducted behavioral assessments (contextual fear memory and spatial learning), as well as gene and protein analysis (RNA sequencing, PCR, immunohistochemistry, and western blot assays). Mice lacking mitochondrial antiviral-signaling protein (MAVS) and mice lacking stimulator of IFN genes protein (STING), 2 downstream sensors of ERV activation, provided confirmation of ERV impact. We found that muMT mice and ICVI-STZ mice induced hippocampal ERV activation, as shown by increased gene and protein expression of the Gag sequence of the transposable element intracisternal A-particle. ERV activation was accompanied by significant hippocampus-related memory impairment in both models. Notably, the deficiency of the MAVS pathway was protective against ICVI-STZ–induced cognitive pathology. Overall, our results demonstrate that ERV activation is associated with cognitive impairment in mice. Moreover, they provide a molecular target for strategies aimed at attenuating retroviral element sensing, via MAVS, to treat dementia and neuropsychiatric disorders.
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Tracking the Fate of Endogenous Retrovirus Segregation in Wild and Domestic Cats. J Virol 2019; 93:JVI.01324-19. [PMID: 31534037 DOI: 10.1128/jvi.01324-19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/09/2019] [Indexed: 12/26/2022] Open
Abstract
Endogenous retroviruses (ERVs) of domestic cats (ERV-DCs) are one of the youngest feline ERV groups in domestic cats (Felis silvestris catus); some members are replication competent (ERV-DC10, ERV-DC18, and ERV-DC14), produce the antiretroviral soluble factor Refrex-1 (ERV-DC7 and ERV-DC16), or can generate recombinant feline leukemia virus (FeLV). Here, we investigated ERV-DC in European wildcats (Felis silvestris silvestris) and detected four loci: ERV-DC6, ERV-DC7, ERV-DC14, and ERV-DC16. ERV-DC14 was detected at a high frequency in European wildcats; however, it was replication defective due to a single G → A nucleotide substitution, resulting in an E148K substitution in the ERV-DC14 envelope (Env). This mutation results in a cleavage-defective Env that is not incorporated into viral particles. Introduction of the same mutation into feline and murine infectious gammaretroviruses resulted in a similar Env dysfunction. Interestingly, the same mutation was found in an FeLV isolate from naturally occurring thymic lymphoma and a mouse ERV, suggesting a common mechanism of virus inactivation. Refrex-1 was present in European wildcats; however, ERV-DC16, but not ERV-DC7, was unfixed in European wildcats. Thus, Refrex-1 has had an antiviral role throughout the evolution of the genus Felis, predating cat exposure to feline retroviruses. ERV-DC sequence diversity was present across wild and domestic cats but was locus dependent. In conclusion, ERVs have evolved species-specific phenotypes through the interplay between ERVs and their hosts. The mechanism of viral inactivation may be similar irrespective of the evolutionary history of retroviruses. The tracking of ancestral retroviruses can shed light on their roles in pathogenesis and host-virus evolution.IMPORTANCE Domestic cats (Felis silvestris catus) were domesticated from wildcats approximately 9,000 years ago via close interaction between humans and cats. During cat evolution, various exogenous retroviruses infected different cat lineages and generated numerous ERVs in the host genome, some of which remain replication competent. Here, we detected several ERV-DC loci in Felis silvestris silvestris Notably, a species-specific single nucleotide polymorphism in the ERV-DC14 env gene, which results in a replication-defective product, is highly prevalent in European wildcats, unlike the replication-competent ERV-DC14 that is commonly present in domestic cats. The presence of the same lethal mutation in the env genes of both FeLV and murine ERV provides a common mechanism shared by endogenous and exogenous retroviruses by which ERVs can be inactivated after endogenization. The antiviral role of Refrex-1 predates cat exposure to feline retroviruses. The existence of two ERV-DC14 phenotypes provides a unique model for understanding both ERV fate and cat domestication.
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Ngo MH, Soma T, Youn HY, Endo T, Makundi I, Kawasaki J, Miyake A, Nga BTT, Nguyen H, Arnal M, Fernández de Luco D, Deshapriya RMC, Hatoya S, Nishigaki K. Distribution of infectious endogenous retroviruses in mixed-breed and purebred cats. Arch Virol 2019; 165:157-167. [PMID: 31748876 DOI: 10.1007/s00705-019-04454-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/02/2019] [Indexed: 11/24/2022]
Abstract
Endogenous retroviruses of domestic cats (ERV-DCs) are members of the genus Gammaretrovirus that infect domestic cats (Felis silvestris catus). Uniquely, domestic cats harbor replication-competent proviruses such as ERV-DC10 (ERV-DC18) and ERV-DC14 (xenotropic and nonecotropic viruses, respectively). The purpose of this study was to assess invasion by two distinct infectious ERV-DCs, ERV-DC10 and ERV-DC14, in domestic cats. Of a total sample of 1646 cats, 568 animals (34.5%) were positive for ERV-DC10 (heterozygous: 377; homozygous: 191), 68 animals (4.1%) were positive for ERV-DC14 (heterozygous: 67; homozygous: 1), and 10 animals (0.6%) were positive for both ERV-DC10 and ERV-DC14. ERV-DC10 and ERV-DC14 were detected in domestic cats in Japan as well as in Tanzania, Sri Lanka, Vietnam, South Korea and Spain. Breeding cats, including Singapura, Norwegian Forest and Ragdoll cats, showed high frequencies of ERV-DC10 (60-100%). By contrast, ERV-DC14 was detected at low frequency in breeding cats. Our results suggest that ERV-DC10 is widely distributed while ERV-DC14 is maintained in a minor population of cats. Thus, ERV-DC10 and ERV-DC14 have invaded cat populations independently.
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Affiliation(s)
- Minh Ha Ngo
- Laboratory of Molecular Immunology and Infectious Disease, The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Takehisa Soma
- Veterinary Diagnostic Laboratory, Marupi Lifetech Co., Ltd., 103 Fushiocho, Ikeda, Osaka, 563-0011, Japan
| | - Hwa-Young Youn
- Department of Veterinary Internal Medicine, Seoul National University Hospital for Animals, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Taiji Endo
- Laboratory of Molecular Immunology and Infectious Disease, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Isaac Makundi
- Laboratory of Molecular Immunology and Infectious Disease, The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Junna Kawasaki
- Laboratory of Molecular Immunology and Infectious Disease, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Ariko Miyake
- Laboratory of Molecular Immunology and Infectious Disease, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Bui Thi To Nga
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, 100000, Vietnam
| | - Huyen Nguyen
- Animal Care Clinic, 20/424 Thuy Khue Street, Tay Ho District, Hanoi, 100000, Vietnam
| | - MaríaCruz Arnal
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Daniel Fernández de Luco
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - R M C Deshapriya
- Department of Animal Science, Faculty of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, 598-8531, Japan
| | - Kazuo Nishigaki
- Laboratory of Molecular Immunology and Infectious Disease, The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan.
- Laboratory of Molecular Immunology and Infectious Disease, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan.
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23rd Nantes Actualités Transplantation: "Genomics and Immunogenetics of Kidney and Inflammatory Diseases-Lessons for Transplantation". Transplantation 2019; 103:857-861. [PMID: 30399125 DOI: 10.1097/tp.0000000000002517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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50
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Rutherford HA, Hamilton N. Animal models of leukodystrophy: a new perspective for the development of therapies. FEBS J 2019; 286:4176-4191. [DOI: 10.1111/febs.15060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/31/2019] [Accepted: 09/09/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Holly A. Rutherford
- The Bateson Centre, Department of Infection, Immunity and Cardiovascular Disease University of Sheffield UK
| | - Noémie Hamilton
- The Bateson Centre, Department of Infection, Immunity and Cardiovascular Disease University of Sheffield UK
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