Publications by authors named "Rebecca Gibeault"

Unlabelled: Herpes simplex virus 1 (HSV-1) transcription is restricted in latently infected neurons and the genomes are in mostly silenced chromatin, whereas all viral genes are transcribed in lytically infected cells, in which the genomes are dynamically chromatinized. Epigenetic regulation modulates HSV-1 transcription during lytic, latent, and reactivating infections but the precise mechanisms are not fully defined. Nucleosomes are dynamic: they slide, breathe, assemble, and disassemble.

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Unlabelled: Herpes simplex virus 1 (HSV-1) transcription is restricted in latently infected neurons and the genomes are in mostly silenced chromatin, whereas all viral genes are transcribed in lytically infected cells, in which the genomes are dynamically chromatinized. Epigenetic regulation modulates HSV-1 transcription during lytic, latent, and reactivating infections, but the precise mechanisms are not fully defined. Nucleosomes are dynamic; they slide, breathe, assemble and disassemble.

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Article Synopsis
  • ICP4 is the key transcription activator for herpes simplex virus 1 (HSV-1), but its exact role in regulating gene expression is still not fully understood.
  • The study reveals that HSV-1 can interact with and alter nucleosomes (the building blocks of chromatin), and that ICP4 specifically enhances the dynamics of certain histones, especially H3.1, to counteract the virus's silencing mechanisms.
  • Findings suggest that by preventing stable silencing of HSV-1 genomes, ICP4 plays a crucial role in activating transcription during viral infection.
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Unlabelled: Host chromatin assembly can function as a barrier to viral infection. Epstein-Barr virus (EBV) establishes latent infection as chromatin-assembled episomes in which all but a few viral genes are transcriptionally silent. The factors that control chromatin assembly and guide transcription regulation during the establishment of latency are not well understood.

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We have performed a genomic characterization of a kinetoplastid protist living within the amoebozoan Neoparamoeba pemaquidensis. The genome of this "Ichthyobodo-related organism" was found to be unexpectedly large, with at least 11 chromosomes between 1.0 and 3.

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