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Identification of TNFAIP3 as relapse biomarker and potential therapeutic target for MOG antibody associated diseases
Shrishti Saxena1, Hrishikesh Lokhande1, Grace Gombolay1,2,3
1Ann Romney Center for Neurologic Disease, Brigham and Women's Hospital, Harvard Medical School, 60 Fenwood Road, Office 9002K, Boston, MA, 02115-6128, USA.
Abstract:
MOG-antibody associated disease (MOG-AAD) is a recently recognized demyelinating disorder predominantly affecting children but also occurs in adults, with a relapsing course in approximately 50% of patients. We evaluated peripheral blood mononuclear cells from MOG-AAD patients by flow cytometry and found a strong antigen specific central memory cell (CMC) response with increased Th1 and Th17 cells at the time of a relapse. Transcriptomic analysis of CMCs by three independent sequencing platforms revealed TNFAIP3 as a relapse biomarker, whose expression was down regulated at a relapse compared to remission in MOG-AAD patients. Serum in an additional cohort of patients showed decreased TNFAIP3 levels at relapse compared to remission state in MOG-AAD patients. Our studies suggest that alterations in TNFAIP3 levels are associated with relapses in MOG-AAD patients, which may have clinical utility as a disease course biomarker and therapeutic target.
Insights
MOG-antibody associated disease (MOG-AAD) involves relapses. Researchers found TNFAIP3 levels decrease during MOG-AAD relapses, suggesting its potential as a biomarker.
Area of Science:
- Neuroimmunology
- Molecular Biology
Background:
- MOG-antibody associated disease (MOG-AAD) is a demyelinating disorder with relapsing courses.
- Understanding MOG-AAD relapse mechanisms is crucial for patient management.
Purpose of the Study:
- To investigate immune cell responses during MOG-AAD relapses.
- To identify biomarkers associated with MOG-AAD disease activity.
Main Methods:
- Flow cytometry analysis of peripheral blood mononuclear cells (PBMCs) from MOG-AAD patients.
- Transcriptomic analysis of central memory cells (CMCs) using three sequencing platforms.
- Quantification of TNFAIP3 levels in patient serum samples.
Main Results:
- Increased antigen-specific central memory cell (CMC) response, including Th1 and Th17 cells, observed during MOG-AAD relapses.
- Downregulation of TNFAIP3 expression in CMCs during relapse compared to remission.
- Decreased serum TNFAIP3 levels in MOG-AAD patients during relapse versus remission.
Conclusions:
- Alterations in TNFAIP3 levels are linked to MOG-AAD relapses.
- TNFAIP3 may serve as a valuable biomarker for monitoring MOG-AAD disease course.
- TNFAIP3 represents a potential therapeutic target for MOG-AAD.
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