Project description:RNA-sequencing data of mock, wild-type, and EndoUmut MHV A59 infected IFNAR-/- bone-marrow derived macrophages. RNA was isolated at 6 hours post infection and immunoprecipitated with anti-dsRNA antibody to determine which RNA are forming a dsRNA epitope during viral infection. RNAs were mapped to C57Bl/6 Mouse genome or MHV-A59 genome (Genbank accession # AY910861).
Project description:We provide gene expression data of wild-type (WT) and various knock-out (KO) bone marrow derived macrophages (BMDMs) from mice (C57BL/6) in different conditions of infections and treatments. We included BMDMs from WT (female and male), Ifnar-/-, IFNg-/-, iNOs-/-, Nlrx1-/- (female and male), Nox2-/- and Prx5-/- mice. BMDMs were either infected with a human protozoan parasite Leishmania guyanensis with or without its endosymbiant double-stranded RNA (dsRNA) virus, Leishmania RNA Virus 1 (LgyLRV1+ and LgyLRV1-, respectively). Alternatively BMDMs were treated with a TLR3 agonist poly I:C, a TLR2 agonist FSL1, with H2O2 or tBHQ.
Project description:Leishmania are medically relevant protozoan parasites that cause leishmaniasis, a neglected tropical disease that can differently manifest depending on the species and the immune status of the host. Previously, it has been suggested that the presence of an endosymbiont double stranded RNA virus, Leishmania RNA Virus 1 (LRV1), within the parasite may leed to an exarcerbation of the disease outcome and represents an important factor for treatment failure and relapse. Here, we provide gene expression data of wild-type (WT) and various knock-out (KO) bone marrow derived macrophages (BMDMs) from mice (C57BL/6) in different conditions of infections and treatments. We included BMDMs from WT, Ifnar-/-, IFNg-/-, iNOs-/-, Nlrx1-/-, Nox2-/- and Prx5-/- mice. BMDMs were either infected with a human protozoan parasite Leishmania guyanensis with or without its endosymbiant dsRNA virus, LRV1 (LgyLRV1+ and LgyLRV1-, respectively). Alternatively BMDMs were treated with poly I:C, a synthetic dsRNA or a TLR2 agonist FSL1 to identify virus dependetn pathways or to explore the impact of co-exposure to additional agents, respectively.
Project description:Purpose: While type I interferons (IFN) are important for control of viral replication, we see that, upon infection of Ifnar-/- females were crossed to Ifnar+/- males with ZIKV, only Ifnar+/- fetuses are resorbed or develop severe growth restriction. To identify how IFN may be altering placenta development, we performed RNAsequencing on infected and uninfected Ifnar-/- and Ifnar+/- placentas. Methods: Ifnar-/- females were crossed to Ifnar+/- males and infected intravaginally with Cambodian ZIKV at E5.5. Placentas were harvested from infected and uninfected pregnant dams at E10.5. Results/ Conclusions: Comparison of ZIKV-infected Ifnar-/- and Ifnar+/- shows an elevated interferon stimulated gene (ISG) signature in Ifnar+/- placentas but does not reveal any underlying developmental defects that may be causing defects in placenta development.
Project description:Set of microarray experiments used to identify an unknown coronavirus in a viral culture derived from a patient with SARS. March 2003. Keywords = SARS Keywords = coronavirus Keywords = viral discovery Keywords = viruses Keywords = respiratory infection
Project description:To investigate how SARS-CoV-2 viral peptides alter the immune sensing program in HDMVEC, we treated HDMVEC with SARS-CoV-2 viral peptide-dsRNA complex (xenoAMP(S)-dsRNA), Control(S)-dsRNA, dsRNA only or their associated controls. Control(S) was the homolog sequence of xenoAMP(S) from low pathogenic human coronavirus-OC43(HCoV-OC43). The gene expression profiles in the stimulated HDMVEC were analyzed with RNA sequencing.
Project description:Coronavirus EndoU inhibits double-stranded RNA (dsRNA)-activated antiviral responses; however, it is unclear how this occurs because the physiologic RNA substrates of EndoU are unknown. In this study, we used Mouse Hepatitis Virus (MHV)-infected bone-marrow-derived macrophage (BMM) and cyclic phosphate cDNA sequencing to identify the RNA targets of EndoU
Project description:Endogenous double-stranded RNA (dsRNA) is intricately regulated in mammals to prevent aberrant activation of host inflammatory pathways by cytosolic dsRNA binding proteins. We define the endogenous dsRNA repertoire in mouse BMDMs during the inflammatory response to bacterial lipopolysaccharide. Editing by adenosine deaminases that act of RNA (ADAR) enzymes was quantified temporally using RNA-Seq data from activated mouse macrophages to identify 342 Editing Enriched Regions (EERs), indicative of highly structured dsRNA. Nearly all mouse EERs were present in 3’UTRs. A comparison of EERs from mouse and human revealed significant conservation of EERs between mouse EER- associated genes and homologous human genes. In addition, using publicly available data and experimental validation, a significant proportion of EERs were shown to accumulate in the nucleus, a strategy that is thought to prevent aberrant activation of proinflammatory cascades in the cytoplasm. Finally, the significant conservation of EERs and the enhancement of structured regions in human suggests an increasingly important role for these regions in human biology.
Project description:Impaired type I interferon (IFN) responses are predictive of severe disease during pulmonary coronavirus infection. Insufficient IFN-responsiveness is associated with viremia and hypercytokinemia, however the resolution of IFN-dependent innate immune responses in the lungs remains limited. Here, we aimed to elucidate the early dynamics of antiviral immunity and define the IFN-dependent mechanisms limiting viral spread during pulmonary infection with the murine coronavirus A59 (M-CoV-A59), a beta-coronavirus. Combining high-resolution transcriptomic analysis and genetic attenuation of interferon signaling, we delineated IFN-dependent cell-intrinsic and population-based transcriptional changes that determined viral replication and inflammatory maturation, respectively.