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Concept

Élément viral endogène

Publications associées (24)

Stimulus-responsive assembly of nonviral nucleocapsids

Angela Steinauer

Controlled assembly of a protein shell around a viral genome is a key step in the life cycle of many viruses. Here we report a strategy for regulating the co-assembly of nonviral proteins and nucleic acids into highly ordered nucleocapsids in vitro. By fus ...

Nature Portfolio2024

Simultaneous membrane and RNA binding by Tick-Borne Encephalitis Virus capsid protein

Sarah Victoria Barrass

Tick-borne encephalitis virus is an enveloped, pathogenic, RNA virus in the family Flaviviridae, genus Flavivirus. Viral particles are formed when the nucleocapsid, consisting of an RNA genome and multiple copies of the capsid protein, buds through the end ...

PUBLIC LIBRARY SCIENCE2023

Viral diversity is linked to bacterial community composition in alpine stream biofilms

Tom Ian Battin, Hannes Markus Peter, Paraskevi Pramateftaki, Meriem Bekliz

Biofilms play pivotal roles in fluvial ecosystems, yet virtually nothing is known about viruses in these communities. Leveraging an optimized sample-to-sequence pipeline, we studied the spatiotemporal turnover of dsDNA viruses associated with stream biofil ...

Springer2022

KRAB zinc finger protein-mediated control of transposon-embedded regulatory sequences from human germline to early embryos

Alexandra Iouranova

Transposable elements (TEs), also called jumping genes, are genetic elements capable of changing their position within the genome of their host. They make up large fractions of genomes, including 45% of human DNA content, according to current estimates. S ...

EPFL2021

Endogenous retroviruses drive KRAB zinc-finger protein family expression for tumor suppression

Didier Trono, Priscilla Turelli, Alexandre Coudray

Gene expression aberration is a hallmark of cancers, but the mechanisms underlying such aberrations remain unclear. Human endogenous retroviruses (HERVs) are genomic repetitive elements that potentially function as enhancers. Since numerous HERVs are epige ...

AMER ASSOC ADVANCEMENT SCIENCE2020

Heritability of the HIV-1 reservoir size and decay under long-term suppressive ART

Jacques Fellay

The HIV-1 reservoir is the major hurdle to curing HIV-1. However, the impact of the viral genome on the HIV-1 reservoir, i.e. its heritability, remains unknown. We investigate the heritability of the HIV-1 reservoir size and its long-term decay by analyzin ...

Nature Research2020

Exploring the interactions between the human and viral genomes

Jacques Fellay

Over the last decade, genome-wide association studies led to major advances in identifying human genetic variants associated with infectious disease susceptibility. On the pathogen side, comparable methods are now applied to identify disease-modulating pat ...

SPRINGER2020

Primate-restricted KRAB zinc finger proteins and target retrotransposons control gene expression in human neurons

Didier Trono, Bart Deplancke, Priscilla Turelli, Christian Axel Wandall Thorball, Julien Léonard Duc, Alexandre Coudray, Julien Paul André Pontis, Charlène Mireille Raymonde Raclot, Delphine Yvette L Grun, Christopher James Playfoot

In the first days of embryogenesis, transposable element-embedded regulatory sequences (TEeRS) are silenced by Kruppel-associated box (KRAB) zinc finger proteins (KZFPs). Many TEeRS are subsequently co-opted in transcription networks, but how KZFPs influen ...

2020

Benchmarking protocols for the metagenomic analysis of stream biofilm viromes

Tom Ian Battin, Hannes Markus Peter, Massimo Bourquin, Jade Brandani, Meriem Bekliz

Viruses drive microbial diversity, function and evolution and influence important biogeochemical cycles in aquatic ecosystems. Despite their relevance, we currently lack an understanding of their potential impacts on stream biofilm structure and function. ...

PeerJ2019

Differences in viral disinfection mechanisms as revealed by quantitative transfection of Echovirus 11 genomes

Urs von Gunten, Tamar Kohn, Jason Robert Torrey

Virus inactivation mechanisms can be elucidated by methods which measure the loss of specific virus functionality (e.g., host attachment, genome internalization, genome replication). Genome functionality is frequently assessed by PCR-based methods, which a ...

2019

Relationship Between Inactivation and Genome Damage of Human Enteroviruses Upon Treatment by UV254, Free Chlorine, and Ozone

Tamar Kohn, Virginie Bachmann, Jason Robert Torrey, Suzanne Marie Young

Quantitative PCR (qPCR) is a convenient tool for monitoring virus concentrations in water and wastewater treatment trains, though it only informs about virus presence, but not infectivity. This limitation can be overcome if the relationship between infecti ...

2019

On the Analysis of Intrahost and Interhost Viral Populations: Human Cytomegalovirus as a Case Study of Pitfalls and Expectations

Jeffrey David Jensen, Susanne Petra Pfeifer, Sebastian Matuszewski

Intrahost and interhost assessments of viral diversity are often treated as measures of separate and distinct evolutionary processes, with numerous investigations reporting seemingly incompatible results between the two. For example, in human cytomegalovir ...

American Society for Microbiology2017

Viral genetic variation accounts for a third of variability in HIV-1 set-point viral load in Europe

Jacques Fellay

HIV-1 set-point viral load-the approximately stable value of viraemia in the first years of chronic infection-is a strong predictor of clinical outcome and is highly variable across infected individuals. To better understand HIV-1 pathogenesis and the evol ...

Public Library Science2017

Release of human cytomegalovirus from latency by a KAP1/TRIM28 phosphorylation switch

Didier Trono, Adamantia Kapopoulou, Marco Cassano, Isabelle Barde, Benjamin Rauwel, Suk Min Jang

Human cytomegalovirus (HCMV) is a highly prevalent pathogen that induces life-long infections notably through the establishment of latency in hematopoietic stem cells (HSC). Bouts of reactivation are normally controlled by the immune system, but can be fat ...

2015

Positive Selection Drives Preferred Segment Combinations during Influenza Virus Reassortment

Jeffrey David Jensen, Matthieu Foll

Influenza A virus (IAV) has a segmented genome that allows for the exchange of genome segments between different strains. This reassortment accelerates evolution by breaking linkage, helping IAV cross species barriers to potentially create highly virulent ...

Oxford University Press2015

De novo DNA methylation of endogenous retroviruses is shaped by KRAB-ZFPs/KAP1 and ESET

Didier Trono, Sandra Eloise Kjeldsen, Sonia Verp, Marc Samuel Friedli

Endogenous retroviruses (ERVs) undergo de novo DNA methylation during the first few days of mammalian embryogenesis, although the factors that control the targeting of this process are largely unknown. We asked whether KAP1 (KRAB-associated protein 1) is i ...

Company Of Biologists Ltd2013

Direct and Retrograde Transduction of Nigral Neurons with AAV6, 8, and 9 and Intraneuronal Persistence of Viral Particles

Patrick Aebischer, Bernard Schneider

Recombinant adeno-associated viral (AAV) vectors of serotypes 6, 8, and 9 were characterized as tools for gene delivery to dopaminergic neurons in the substantia nigra for future gene therapeutic applications in Parkinson's disease. While vectors of all th ...

Mary Ann Liebert2013

Rapid Intrahost Evolution of Human Cytomegalovirus Is Shaped by Demography and Positive Selection

Jeffrey David Jensen

Populations of human cytomegalovirus (HCMV), a large DNA virus, are highly polymorphic in patient samples, which may allow for rapid evolution within human hosts. To understand HCMV evolution, longitudinally sampled genomic populations from the urine and p ...

Public Library of Science2013

Subtle differences in virus composition affect disinfection kinetics and mechanisms

Tamar Kohn, Krista Rule Wigginton, Michele Cascella, Brian Pecson, Anne Thérèse Sigstam

Viral disinfection kinetics have been studied in depth, but the molecular-level inactivation mechanisms are not understood. Consequently, it is difficult to predict the disinfection behavior of non-culturable viruses, even when related, culturable viruses ...

American Society for Microbiology2013

Virus Inactivation during Water Treatment : the Role of Virus Aggregation and the Disinfection Potential of Sunlight

Michael Jon Mattle

Virus removal and inactivation is still a major challenge for water treatment facilities in both industrialised nations and developing countries. This may seem surprising as chlorine disinfection started to spread broadly over a century ago. However, many ...

EPFL2013