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Gene expression profile associated with loss of IFNAR signaling or loss of LTβR singlaing in spleen marginal zone macrophages (MZM) in autoimmune BXD2 mice

ABSTRACT: Loss of the interactions between lymphotoxin and its receptor was associated with MZM apoptotic cell clearance defects in BXD2 mice whereas loss of IFNAR in BXD2 mice normalized the function of MZMs. The analysis also intended to use MZMs isolated from BXD2-Ifnar-/- mice and BXD2 mice treated with sLTbR-Fc to identify the common pathways regulating the MZM function in these mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE66687 | GEO | 2015/04/01

SECONDARY ACCESSION(S): PRJNA277722

REPOSITORIES: GEO

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Gene expression profile associated with loss of IFNAR signaling or loss of LTβR singlaing in spleen marginal zone macrophages (MZM) in autoimmune BXD2 mice

Project description:Loss of the interactions between lymphotoxin and its receptor was associated with MZM apoptotic cell clearance defects in BXD2 mice whereas loss of IFNAR in BXD2 mice normalized the function of MZMs. The analysis also intended to use MZMs isolated from BXD2-Ifnar-/- mice and BXD2 mice treated with sLTbR-Fc to identify the common pathways regulating the MZM function in these mice. Samples were derived from MZMs of the spleen of BXD2 mice which exhibit spontaneous defects in MZMs, BXD2-Ifnar-/- mice which exhibit normalized MZMs, and BXD2 mice administered sLTβR-Fc which exhibit further defects in MZMs

2015-04-01 | E-GEOD-66687 | biostudies-arrayexpress

Autoimmune peptide antigen reactivity in BXD2 mice with spontaneous systemic autoimmune disease

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Analysis of transcriptional differences between ZIKV-infected Ifnar-/- and Ifnar+/- placentas

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.

2017-12-31 | GSE98423 | GEO

Autoimmune peptide antigen reactivity in BXD2 mice with spontaneous systemic autoimmune disease

Project description:The aim of the study was to determine autoimmune BXD2 mouse sera reactivity to linear peptide epitopes from the Immune Epitope Database. Pooled sera from six 8-10 month old BXD2 mice was diluted at 1:1000 and incubated on a PEPperPRINT peptide microarray platform printed with peptide autoantigens. In this study, pooled sera from six 8-10 month old BXD2 mice was profiled for anti-mouse IgG (H+L) analysis of autoantibody reactivity to peptide auto-epitopes printed in duplicate on a PepperPrint Chip.

2015-02-28 | E-GEOD-65276 | biostudies-arrayexpress

Autoimmune peptide antigen reactivity in BXD2 mice with spontaneous systemic autoimmune disease Pepperchip 2.0

2015-02-28 | GSE65278 | GEO

Autoimmune peptide antigen reactivity in BXD2 mice with spontaneous systemic autoimmune disease Pepperchip 2.0

Project description:The aim of the array was to determine the BXD2 mouse sera IgG and IgM reactivity profile to linear peptide epitopes. Pooled sera from three 6-9 month old BXD2 mice was diluted at 1:200 for IgG specific analysis or 1:1000 for IgM specific analysis and incubated on a PEPperPRINT peptide microarray platform printed with peptide autoantigens In this study, pooled sera from three 6-9 month old BXD2 mice was profiled for IgG and IgM specific autoantibody reactivity to peptide auto-epitopes printed in duplicate on a PepperPrint Chip.

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Autoimmune peptide antigen IgG and IgM reactivity in B6 and BXD2 mice with spontaneous systemic autoimmune disease

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IL-23 promotes a coordinated B-cell germinal center program for class-switch recombination to IgG2b in BXD2 mice

Project description:IL-23 promotes autoimmune disease including Th17 CD4 T-cell development and autoantibody (autoAb) production. Here, we show that a deficiency of the p19 component of IL-23 in autoimmune BXD2 (BXD2-p19−/−) mice leads to an imbalance of the follicular T-helper cell program with a shift from Tfh-IL-17 to Tfh-IFN-ɣ. Although the germinal center (GC) size and number of GC B cells remained the same, BXD2-p19−/− mice exhibited a lower class-switch recombination (CSR) program in the GC B cells, leading to a lower serum levels of IgG2b. Single cell transcriptomics analysis revealed that while GC B cell expression of Ifngr1 and Il21r genes exhibited a synchronized expression pattern with plasma cell program genes, Il17ra exhibited a synchronized expression pattern with pre-plasmablast GC program genes. Down-regulation of Ighg2b in BXD2-p19−/− GC B cells was associated with decreased expression of CSR-related base excision repair genes that were otherwise predominantly expressed by Il17ra+ cells compared to Ifngr1+ GC B cells in BXD2 mice. Together, these results suggest that although IL-23 is dispensable for GC formation, it is essential for development of the Tfh-IL17 Tfh subpopulation, which drives CSR-related base excision repair genes during the pre-plasmablast GC stage of development.

2020-05-14 | GSE145922 | GEO

Autoimmune peptide antigen IgG and IgM reactivity in B6 and BXD2 mice with spontaneous systemic autoimmune disease

Project description:The aim of the study was to determine B6 and BXD2 mouse sera IgG and IgM reactivity to linear peptide epitopes at different ages. Serum from B6 or BXD2 mice was diluted at 1:200 for IgG-specific analysis or 1:1000 for IgM specific analysis and incubated on a PEPperPRINT peptide microarray platform printed with peptide autoantigens. 80 pre-selected peptides based on a previous screen of pooled mouse serum BXD2 against the PEPperCHIPÂ® Autoimmunity Microarray with 2,733 linear B-cell epitopes were printed in duplicate in 16 copies on a custom PEPperCHIPÂ® Peptide Microarray. Flag (DYKDDDDKGG) and HA (YPYDVPDYAG) control peptides (10 spots each control) were randomly distributed in each array copy as controls. Sera from 2, 5, or 9 month old B6 or BXD2 mice was profiled for anti-mouse IgG or IgM-specific analysis of autoantibody reactivity to the peptide auto-epitopes.

2015-02-28 | E-GEOD-65234 | biostudies-arrayexpress

Humoral or Cellular Immunity Induced by RNA Vaccine Protects IFNAR-/- Mice against Crimean-Congo Hemorrhagic Fever Virus Infection

Project description:Crimean-Congo hemorrhagic fever (CCHF), caused by Crimean-Congo hemorrhagic fever virus (CCHFV), is on the World Health Organizations list over emerging pathogens and prioritized diseases. With global distribution, high fatality rate and no approved treatment or vaccine, CCHF constitute a treat against the global health. In the current study we show full protection of mice against lethal CCHFV infection due to mRNA-LNP vaccination. IFNAR-/- mice received two immunizations with either mRNA-LNP encoding for the CCHFV nucleoprotein, glycoproteins or a combination of both. While unvaccinated mice showed clear signs of severe disease, vaccinated mice was significantly protected. Vaccine induced immune responses due to vaccination was evaluated both in IFNAR-/- and immunocompetent mice and a strong humoral and cellular immune response was observed in both mouse models with high titers of neutralizing antibodies and primed T-cells. In addition, we conducted a proteomic analysis on liver samples from vaccinated and unvaccinated mice after CCHFV infection to determine the effect of vaccination on the protein profile. Similar to what has been observed in humans due to vaccination, there was an effect on metabolic pathways. In conclusion, this study shows very promising results regarding development of a vaccine against CCHFV.

2021-11-15 | PXD023300 | Pride

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