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

Immunome Research
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Research Article

Insights into Gene Expression of Activated Pathogenic Autoimmune T Cells - Studies in Experimental Multiple Sclerosis-like Model

Ewa Kozela1,2*, Ana Juknat1,2, Fuying Gao3, Giovanni Coppola3, Nathali Kaushansky2 and Zvi Vogel1,2

1The Dr Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel

2Neurobiology Department, Weizmann Institute of Science, Rehovot 76100, Israel

3Departments of Psychiatry and Neurology, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA

Corresponding Author:
Ewa Kozela
The Dr Miriam and Sheldon G. Adelson Center for the Biology of Addictive Diseases
Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
Tel: +972 584543248
E-mail: [email protected] or [email protected]

Received Date: February 18, 2016; Accepted Date: March 23, 2016; Published Date: March 28, 2016

Citation: Kozela E, Juknat A, Gao F, Coppola G, Kaushansky N, et al. (2016) Insights into Gene Expression of Activated Pathogenic Autoimmune T Cells - Studies in Experimental Multiple Sclerosis-like Model. Immunome Res 12:108. doi:10.4172/1745-7580.10000108

Copyright: © 2016 Kozela E, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

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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