Réponses antivirales chez le moustique Aedes

@article{scheer_tutase_2021,

title = {The TUTase URT1 connects decapping activators and prevents the accumulation of excessively deadenylated mRNAs to avoid siRNA biogenesis},

author = {Hélène Scheer and Caroline Almeida and Emilie Ferrier and Quentin Simonnot and Laure Poirier and David Pflieger and François M. Sement and Sandrine Koechler and Christina Piermaria and Paweł Krawczyk and Seweryn Mroczek and Johana Chicher and Lauriane Kuhn and Andrzej Dziembowski and Philippe Hammann and Hélène Zuber and Dominique Gagliardi},

doi = {10.1038/s41467-021-21382-2},

issn = {2041-1723},

year  = {2021},

date = {2021-02-01},

journal = {Nature Communications},

volume = {12},

number = {1},

pages = {1298},

abstract = {Uridylation is a widespread modification destabilizing eukaryotic mRNAs. Yet, molecular mechanisms underlying TUTase-mediated mRNA degradation remain mostly unresolved. Here, we report that the Arabidopsis TUTase URT1 participates in a molecular network connecting several translational repressors/decapping activators. URT1 directly interacts with DECAPPING 5 (DCP5), the Arabidopsis ortholog of human LSM14 and yeast Scd6, and this interaction connects URT1 to additional decay factors like DDX6/Dhh1-like RNA helicases. Nanopore direct RNA sequencing reveals a global role of URT1 in shaping poly(A) tail length, notably by preventing the accumulation of excessively deadenylated mRNAs. Based on in vitro and in planta data, we propose a model that explains how URT1 could reduce the accumulation of oligo(A)-tailed mRNAs both by favoring their degradation and because 3' terminal uridines intrinsically hinder deadenylation. Importantly, preventing the accumulation of excessively deadenylated mRNAs avoids the biogenesis of illegitimate siRNAs that silence endogenous mRNAs and perturb Arabidopsis growth and development.},

keywords = {Arabidopsis, Arabidopsis Proteins, Co-Repressor Proteins, DEAD-box RNA Helicases, Gene Expression Regulation, Humans, messenger, Plant, PPSE, Proto-Oncogene Proteins, Ribonucleoproteins, RNA, RNA Nucleotidyltransferases, RNA Stability, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Small Interfering, Tobacco, transcriptome, Uridine},

pubstate = {published},

tppubtype = {article}

}

@article{paro_sensing_2015,

title = {Sensing viral RNAs by Dicer/RIG-I like ATPases across species},

author = {Simona Paro and Jean-Luc Imler and Carine Meignin},

url = {http://linkinghub.elsevier.com/retrieve/pii/S0952791515000102},

doi = {10.1016/j.coi.2015.01.009},

issn = {1879-0372},

year  = {2015},

date = {2015-02-01},

journal = {Current Opinion in Immunology},

volume = {32},

pages = {106--113},

abstract = {Induction of antiviral immunity in vertebrates and invertebrates relies on members of the RIG-I-like receptor and Dicer families, respectively. Although these proteins have different size and domain composition, members of both families share a conserved DECH-box helicase domain. This helicase, also known as a duplex RNA activated ATPase, or DRA domain, plays an important role in viral RNA sensing. Crystallographic and electron microscopy studies of the RIG-I and Dicer DRA domains indicate a common structure and that similar conformational changes are induced by dsRNA binding. Genetic and biochemical studies on the function and regulation of DRAs reveal similarities, but also some differences, between viral RNA sensing mechanisms in nematodes, flies and mammals.},

keywords = {Adenosine Triphosphatases, Animals, DEAD-box RNA Helicases, Humans, imler, M3i, meignin, Protein Binding, Protein Interaction Domains and Motifs, Ribonuclease III, RNA, Viral, Virus Diseases, viruses},

pubstate = {published},

tppubtype = {article}

}

@article{kemp_antiviral_2009,

title = {Antiviral immunity in drosophila},

author = {Cordula Kemp and Jean-Luc Imler},

doi = {10.1016/j.coi.2009.01.007},

issn = {1879-0372},

year  = {2009},

date = {2009-02-01},

journal = {Current Opinion in Immunology},

volume = {21},

number = {1},

pages = {3--9},

abstract = {Genetic analysis of the drosophila antiviral response indicates that RNA interference plays a major role. This contrasts with the situation in mammals, where interferon-induced responses mediate innate antiviral host-defense. An inducible response also contributes to antiviral immunity in drosophila, and similarities in the sensing and signaling of viral infection are becoming apparent between drosophila and mammals. In particular, DExD/H box helicases appear to play a crucial role in the cytosolic detection of viral RNAs in flies and mammals.},

keywords = {Animals, Argonaute Proteins, Caspases, DEAD-box RNA Helicases, Evolution, Gene Expression Regulation, Host-Pathogen Interactions, imler, M3i, Membrane Proteins, Molecular, Nuclear Proteins, Ribonuclease III, RNA, RNA Helicases, RNA Interference, RNA Virus Infections, RNA Viruses, RNA-Induced Silencing Complex, Viral, Virulence},

pubstate = {published},

tppubtype = {article}

}

@article{muller_dicing_2007,

title = {Dicing with viruses: microRNAs as antiviral factors},

author = {Stefanie Müller and Jean-Luc Imler},

doi = {10.1016/j.immuni.2007.07.003},

issn = {1074-7613},

year  = {2007},

date = {2007-07-01},

journal = {Immunity},

volume = {27},

number = {1},

pages = {1--3},

abstract = {In plants and invertebrates, Dicer genes play a critical role against infections by RNA viruses. In this issue, Otsuka et al. (2007) report that Dicer mutant mice are hypersusceptible to infection by the RNA virus VSV.},

keywords = {Animals, DEAD-box RNA Helicases, Endoribonucleases, imler, M3i, MicroRNAs, Ribonuclease III, RNA Interference, RNA Virus Infections},

pubstate = {published},

tppubtype = {article}

}