Sp140L Is a Herpesvirus Restriction Factor [Day5_LPKO_vs_SP100_SP140L_KO_BulkRNAseq]
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1188473 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Sp140L Is a Herpesvirus Restriction Factor [Day8_WT_vs_LPKO_BulkRNAseq]
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Project description:Sp140L Is a Herpesvirus Restriction Factor [scRNA-seq]
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Project description:Herpesviruses, including the oncogenic Epstein-Barr Virus (EBV), must bypass host DNA sensing mechanisms to drive infection and pathogenesis. The first viral latency protein expressed, EBNA-LP, is essential for the transformation of naïve B cells, yet its role in evading host defenses remains unclear. Using single-cell RNA sequencing of EBNA-LP-Knockout (LPKO)-infected B cells, we reveal an antiviral response landscape implicating the ‘speckled proteins’ as key restriction factors countered by EBNA-LP. Specifically, loss of SP100 or the primate-specific SP140L reverses the restriction of LPKO, suppresses a subset of canonically interferon-stimulated genes, and restores viral gene transcription and cellular proliferation. Notably, we also identify Sp140L as a restriction target of the herpesvirus saimiri ORF3 protein, implying a role in immunity to other DNA viruses. This study reveals Sp140L as a restriction factor that we propose links sensing and transcriptional suppression of viral DNA to an IFN-independent innate immune response, likely relevant to all nuclear DNA viruses.
2024-11-20 | GSE282376 | GEO
Project description:Herpesviruses, including the oncogenic Epstein-Barr Virus (EBV), must bypass host DNA sensing mechanisms to drive infection and pathogenesis. The first viral latency protein expressed, EBNA-LP, is essential for the transformation of naïve B cells, yet its role in evading host defenses remains unclear. Using single-cell RNA sequencing of EBNA-LP-Knockout (LPKO)-infected B cells, we reveal an antiviral response landscape implicating the ‘speckled proteins’ as key restriction factors countered by EBNA-LP. Specifically, loss of SP100 or the primate-specific SP140L reverses the restriction of LPKO, suppresses a subset of canonically interferon-stimulated genes, and restores viral gene transcription and cellular proliferation. Notably, we also identify Sp140L as a restriction target of the herpesvirus saimiri ORF3 protein, implying a role in immunity to other DNA viruses. This study reveals Sp140L as a restriction factor that we propose links sensing and transcriptional suppression of viral DNA to an IFN-independent innate immune response, likely relevant to all nuclear DNA viruses.
2024-11-20 | GSE282377 | GEO
Project description:Herpesviruses, including the oncogenic Epstein-Barr Virus (EBV), must bypass host DNA sensing mechanisms to drive infection and pathogenesis. The first viral latency protein expressed, EBNA-LP, is essential for the transformation of naïve B cells, yet its role in evading host defenses remains unclear. Using single-cell RNA sequencing of EBNA-LP-Knockout (LPKO)-infected B cells, we reveal an antiviral response landscape implicating the ‘speckled proteins’ as key restriction factors countered by EBNA-LP. Specifically, loss of SP100 or the primate-specific SP140L reverses the restriction of LPKO, suppresses a subset of canonically interferon-stimulated genes, and restores viral gene transcription and cellular proliferation. Notably, we also identify Sp140L as a restriction target of the herpesvirus saimiri ORF3 protein, implying a role in immunity to other DNA viruses. This study reveals Sp140L as a restriction factor that we propose links sensing and transcriptional suppression of viral DNA to an IFN-independent innate immune response, likely relevant to all nuclear DNA viruses.
2024-11-20 | GSE282400 | GEO
Project description:Lates calcarifer Herpesvirus genome
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Project description:Herpesvirus infections are highly prevalent in the human population and persist for life. They are often acquired subclinically but potentially progress to life-threatening diseases in immunocompromised individuals. The interferon system is indispensable for the control of herpesviral replication. However, the responsible antiviral effector mechanisms are not well characterized. The type I interferon-induced, human myxovirus resistance 2 (MX2) gene product MxB, a dynamin-like large GTPase, has recently been identified as a potent inhibitor of HIV-1. We now show that MxB also interferes with an early step of herpesvirus replication, affecting alpha-, beta-, and gammaherpesviruses before or at the time of immediate early gene expression. Defined MxB mutants influencing GTP binding and hydrolysis revealed that the effector mechanism against herpesviruses is thoroughly different from that against HIV-1. Overall, our findings demonstrate that MxB serves as a broadly acting intracellular restriction factor that controls the establishment of not only retrovirus but also herpesvirus infection of all three subfamilies.IMPORTANCE Human herpesviruses pose a constant threat to human health. Reactivation of persisting herpesvirus infections, particularly in immunocompromised individuals and the elderly, can cause severe diseases, such as zoster, pneumonia, encephalitis, or cancer. The interferon system is relevant for the control of herpesvirus replication as exemplified by fatal disease outcomes in patients with primary immunodeficiencies. Here, we describe the interferon-induced, human MX2 gene product MxB as an efficient restriction factor of alpha-, beta-, and gammaherpesviruses. MxB has previously been described as an inhibitor of HIV-1. Importantly, our mutational analyses of MxB reveal an antiviral mechanism of herpesvirus restriction distinct from that against HIV-1. Thus, the dynamin-like MxB GTPase serves as a broadly acting intracellular restriction factor that controls retrovirus as well as herpesvirus infections.
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Project description:Genome sequence of canine herpesvirus
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Project description:ChIP-sequencing reads from Oncogenic Herpesvirus utilizes stress-induced cell cycle checkpoints for efficient lytic replication, accepted to PLOS Pathogens
2016-06-01 | E-MTAB-4356 | biostudies-arrayexpress
Project description:TMEFF1 is a neuron-specific restriction factor for herpes simplex virus
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