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MOG-encoding DNA vaccines ameliorate EAE and display neuroprotective effects in treated mice summary

ABSTRACT: Vaccination with naked DNA encoding myelin basic protein represents a promising therapeutic strategy in multiple sclerosis (MS). In this study, we assessed the potential of vaccination with a DNA construct coding for the myelin oligodendrocyte glycoprotein (MOG), an important candidate autoantigen in MS, to induce tolerance and protect against experimental autoimmune encephalomyelitis (EAE). Herein, we demonstrated that MOG-DNA vaccination reduced the clinical and histopathological signs of EAE when administered in both prophylactic and therapeutic settings. Further mechanistic experiments revealed that the protective effects of MOG-DNA vaccines were associated with a reduction of antigen-specific Th1 and Th17 cellular immune responses and expansion of regulatory T cells in periphery, and up-regulation in the central nervous system of genes encoding neurotrophic factors and proteins involved in remyelination. These results may set the rationale for the use of MOG-based DNA vaccines to induce tolerance in MS patients. We analyzed brain and spinal cord samples from five treated and five control mice

ORGANISM(S): Mus musculus

SUBMITTER: Ramil Nurtdinov

PROVIDER: E-GEOD-30482 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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MOG-encoding DNA vaccines ameliorate EAE and display neuroprotective effects in treated mice summary

Project description:Vaccination with naked DNA encoding myelin basic protein represents a promising therapeutic strategy in multiple sclerosis (MS). In this study, we assessed the potential of vaccination with a DNA construct coding for the myelin oligodendrocyte glycoprotein (MOG), an important candidate autoantigen in MS, to induce tolerance and protect against experimental autoimmune encephalomyelitis (EAE). Herein, we demonstrated that MOG-DNA vaccination reduced the clinical and histopathological signs of EAE when administered in both prophylactic and therapeutic settings. Further mechanistic experiments revealed that the protective effects of MOG-DNA vaccines were associated with a reduction of antigen-specific Th1 and Th17 cellular immune responses and expansion of regulatory T cells in periphery, and up-regulation in the central nervous system of genes encoding neurotrophic factors and proteins involved in remyelination. These results may set the rationale for the use of MOG-based DNA vaccines to induce tolerance in MS patients.

2011-07-08 | GSE30482 | GEO

Comparative genomic hybridization of experimental autoimmune encephalomyelitis (EAE)-susceptible DA and EAE-resistant PVG rat strains stimulated with myelin oligodendrocyte glycoprotein (MOG) to identify the alternative splicing.

Project description:Experimental autoimmune encephalomyelitis (EAE)-susceptible DA and EAE-resistant PVG rats were immunized with myelin oligodendrocyte glycoprotein (MOG) to induce an autoimmune response. Seven days later draining inguinal lymph nodes were removed. 2 conditions were examined: 'ex vivo' and 'MOG restimulated', which involved 24hrs of incubation with an encephalogenic MOG 91-108 peptide.

2009-11-01 | E-MEXP-2237 | biostudies-arrayexpress

Transcription profiling by tiling array of Rattus norvegicus lymph nodes from experimental autoimmune encephalomyelitis susceptible DA and congenic R23 animal strains stimulated with myelin oligodendrocyte glycoprotein.

Project description:Experimental autoimmune encephalomyelitis (EAE)-susceptible DA and EAE-resistant congenic R23 rats were immunized with myelin oligodendrocyte glycoprotein (MOG) to induce an autoimmune response. Seven days later draining inguinal lymph nodes were removed. 2 conditions were examined: 'ex vivo' and 'MOG restimulated', which involved 24hrs of incubation with an encephalogenic MOG 91-108 peptide.

2010-12-31 | E-MEXP-2703 | biostudies-arrayexpress

F2833 scRNA-seq data for manuscript "Therapeutic vaccine containing a novel liposomal adjuvant shifts pathogenic Th17 cells into a Tr1-like phenotype"

Project description:Th17 cells can transdifferentiate into other T cell subsets in the context of infections or inflammatory conditions. In many autoimmune diseases, autoantigen-specific Th17 cells play a pivotal role in disease pathogenesis, however, there have been no attempts to target Th17 cell plasticity using vaccines. We aimed to change the phenotype of existing Th17 cells by a protein-in-adjuvant approach and found that antigen formulated in all-trans retinoic acid (ATRA)-containing cationic liposomes (CAF16) effectively inhibited existing Th17 responses. Strikingly, transcriptomic analysis of sorted Th17 cells from IL-17 fate reporter mice revealed a shift of antigen-specific Th17 cells to exTh17 cells, expressing functional markers associated with T cell regulation and tolerance. In addition, vaccination with myelin-specific (MOG) antigen in CAF16 reduced Th17 responses and alleviated disease in the experimental autoimmune encephalomyelitis (EAE) mouse model of MS. This highlights CAF16 as a novel delivery system for ATRA with potential for changing the phenotype of existing Th17 cells in the context of immune mediated diseases.

2024-02-27 | GSE240801 | GEO

F2702 bulk RNA-seq data for manuscript "Therapeutic vaccine containing a novel liposomal adjuvant shifts pathogenic Th17 cells into a Tr1-like phenotype"

2024-02-27 | GSE240800 | GEO

Transcriptome profiling of a backcross between experimental autoimmune encephalomyelitis (EAE)-susceptible DA and EAE-resistant PVG rat strains to identify expression quantitative trait loci.

Project description:The aim of the experiment is to characterize the genetics and mechanisms of the inflammatory response after induction of experimental autoimmune encephalomyelitis (EAE), a model of multiple sclerosis, by studying the genome wide expression in the spleen in late disease. A backcross was created between EAE-susceptible DA and EAE-resistant PVG rats. At day 35 after induction of EAE with myelin oligodendrocyte glycoprotein (MOG) in these rats, spleens were taken for transcriptional profiling.

2013-08-10 | E-MTAB-784 | biostudies-arrayexpress

Effect of anti-CD20 treatment on the composition and gene expression of meningeal ectopic lymphoid tissue and CSFin a spontaneous EAE model, using single cell gene expression .

Project description:Objective: To investigate how anti-CD20 B cell-depleting monoclonal antibodies (ɑCD20 mAb) alter the composition and gene expression of immune cells in meningeal ectopic lymphoid tissue (mELT) and the CSF in a murine model of Multiple Sclerosis (MS). Methods: We utilized a spontaneous chronic experimental autoimmune encephalomyelitis (EAE) model of mice with mutant T and B cell receptors specific for myelin oligodendrocyte glycoprotein (MOG), which develop meningeal inflammatory infiltrates resembling those described in Multiple Sclerosis (MS). We studied the changes in cell composition and gene expression after anti-CD20 treatment in mELT and CSF.

2023-11-01 | GSE181506 | GEO

RNA seq on SP specific CD8+ T cells, Ly49+ and Ly49-CD8+ T cells from MOG and MOG + SP immunized mice [RNA-Seq]

Project description:In experimental autoimmune encephalomyelitis (EAE), a model for multiple sclerosis (MS), induction generates successive waves of clonally expanded CD4+, CD8+, and gd+ T cells in the blood and central nervous system, similar to gluten challenge studies of Celiac patients. In MS patients, we also observe major expansions of CD8+ T cells. In EAE, we find that most expanded CD4+ T cells are specific for the inducing myelin peptide MOG35-55 but in contrast, peptide ligands derived from a yeast peptide-MHC display library for some of the clonally expanded CD8+ T cells inhibit disease by suppressing the proliferation of MOG-specific CD4+ T cells. These results suggest the induction of autoreactive CD4+ T cells triggers an opposing mobilization of regulatory CD8+ T cells.

2019-08-08 | GSE130975 | GEO

Single cell analysis of meningeal ectopic lymphoid tissue and lumbar lymph nodes in a spontaneous EAE model

Project description:Objective: To investigate how similar meningeal ectopic lymhpoid tissue (mELT) is to secondary lymphoid tissues and find unique features of mELT that could allow therapeutic targetting of mELT specifically. Methods: We utilized a spontaneous chronic experimental autoimmune encephalomyelitis (EAE) model of mice with mutant T and B cell receptors specific for myelin oligodendrocyte glycoprotein (MOG), which develop meningeal inflammatory infiltrates resembling those described in Multiple Sclerosis (MS). We identified differences in cell composition and gene expression between mELT and lumbar lymph nodes using single cell sequencing.

2023-11-01 | GSE181526 | GEO

Myelin-reactive B cells exacerbate the severity of CD4+ T cell-driven CNS autoimmunity in an IL-23-dependent manner

Project description:B cells and T cells collaborate in multiple sclerosis (MS) pathogenesis. IgH[MOG]mice possess a B cell repertoire skewed to recognize myelin oligodendrocyte glycoprotein (MOG). Here, we show that upon immunization with the T cell-obligate autoantigen, MOG[35-55], IgH[MOG] mice develop rapid and exacerbated experimental autoimmune encephalomyelitis (EAE) relative to wildtype (WT) counterparts, characterized by aggregation of T and B cells in the IgH[MOG] meninges and by CD4+T helper 17 (Th17) cells in theCNS. Unusually, production of the Th17 maintenance factor IL-23 is observed from IgH[MOG]CNS-infiltrating and meningeal B cells, andin vivoblockade of IL-23p19 attenuates disease severity in IgH[MOG] mice. In the CNS parenchyma and dura mater of IgH[MOG] mice, we observe an increased frequency of CD4+PD-1+CXCR5-T cells that share numerous characteristics with the recently described T peripheral helper (Tph) cell subset. Further, CNS-infiltrating B and Tph cells from IgH[MOG] mice show increased reactive oxygen species (ROS) production. Meningeal inflammation, Tph-like cell accumulation in the CNS and B/Tph cell production of ROS were all reduced upon p19 blockade. Altogether, MOG-specific B cells promote autoimmune inflammation of the CNS parenchyma and meninges inan IL-23 dependent manner.

2024-05-14 | GSE267422 | GEO

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