alexa Abstract | Insights into Gene Expression of Activated Pathogenic Autoimmune T Cells - Studies in Experimental Multiple Sclerosis-like Model
ISSN: 1745-7580

Immunome Research
Open Access

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Research Article Open Access


Multiple Sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE), are autoimmune diseases driven by pathogenic memory T cells. Using myelin oligodendrocyte glycoprotein (MOG) 35-55-specific encephalitogenic T cells (TMOG) isolated from MOG35-55-immunized EAE mice we describe here their gene expression profile following antigen specific activation. A vast number of pro-inflammatory genes including cytokines, chemokines and growth factors (e.g., Csf2, Il3, Ccl1, Ccl3) as well as signaling pathways (e.g., iNOS, MAPK, JAK/STAT, NFκβ) were dramatically upregulated following MOG35-55 stimulation of TMOG cells. A number of Th17-related pathways were induced confirming potent Th17-like activation of TMOG. Interestingly, genes known for their anti-inflammatory role (Sit1, Hsd11b1, Pias3, Pparg, Lgmn, Klk3, Tnfaip8l2) were down-regulated in response to MOG35-55 suggesting that silencing of intrinsic suppressory mechanisms may underlie the hyperactivation of memory T cells. MOG35-55 activation led to lower transcription of pro-apoptotic/autophagic genes (Ddit4, Bbc3, Dapk2, Wbp1) and to enhanced level of anti-apoptotic transcripts (Bcl2l1). Transcripts related to toll-like receptors and MyD88-signaling were induced, revealing the involvement of innate immunity pathways in T cell driven autoimmunity. This study reveals the transcriptional events that lead to enhanced cytotoxicity, proliferation and resistance to apoptosis of activated autoimmune T cells. We suggest that encephalitogenic T cells may serve as a reliable in vitro model for screening for possible therapeutics against T cell driven autoimmune diseases.

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Author(s): Ewa Kozela, Ana Juknat, Fuying Gao, Giovanni Coppola, Nathali Kaushansky and Zvi Vogel


Encephalitogenic T cells, Th17, MOG, Multiple sclerosis, Autoimmune diseases, Gene expression, Encephalitogenic T cells, Th17, MOG, Multiple sclerosis, Autoimmune diseases, Gene expression

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