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Hypothesis: bipolar disorder is an Epstein–Barr virus‐driven chronic autoimmune disease – implications for immunotherapy
Author(s) -
Pender Michael P
Publication year - 2020
Publication title -
clinical and translational immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.321
H-Index - 34
ISSN - 2050-0068
DOI - 10.1002/cti2.1116
Subject(s) - immunotherapy , medicine , immunology , autoimmune disease , disease , virus , bipolar disorder , epstein–barr virus , virology , immune system , psychiatry , antibody , cognition
Bipolar disorder (BD) is a chronic disease characterised by episodes of major depression and episodes of mania or hypomania, with a worldwide prevalence of 2.4%. The cause of BD is unknown. Here, I propose the hypothesis that BD is a chronic autoimmune disease caused by Epstein–Barr virus (EBV) infection of autoreactive B cells. It is postulated that EBV‐infected autoreactive B cells accumulate in the brain where they provide costimulatory survival signals to autoreactive T cells and differentiate into plasma cells producing pathogenic autoantibodies targeting brain components such as the N‐methyl‐D‐aspartate receptor. It is also proposed that the accumulation of EBV‐infected autoreactive B cells in the brain is a consequence of a genetically determined defect in the ability of CD8 + T cells to control EBV infection. The theory is supported by studies indicating that autoimmunity, EBV infection and CD8 + T‐cell deficiency all have roles in the pathogenesis of BD. According to the hypothesis, BD should be able to be treated by EBV‐specific T‐cell therapy and to be prevented by vaccination against EBV in early childhood. Exposure to sunlight or appropriate artificial light should also be beneficial in BD by augmenting CD8 + T‐cell control of EBV infection.

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