BOB.1 controls memory B-cell fate in the germinal center reaction - Inserm - Institut national de la santé et de la recherche médicale Access content directly
Journal Articles Journal of Autoimmunity Year : 2019

BOB.1 controls memory B-cell fate in the germinal center reaction


During T cell-dependent (TD) germinal center (GC) responses, naïve B cells are instructed to differentiate towards GC B cells (GCBC), high-affinity long-lived plasma cells (LLPC) or memory B cells (Bmem). Alterations in the B cell-fate choice could contribute to immune dysregulation leading to the loss of self-tolerance and the initiation of autoimmune disease. Here we show that mRNA levels of the transcription regulator BOB.1 are increased in the lymph node compartment of patients with rheumatoid arthritis (RA), a prototypical auto-immune disease caused by the loss of immunological tolerance. Investigating to what extent levels of BOB.1 impact B cells during TD immune responses we found that BOB.1 has a crucial role in determining the B cell-fate decision. High BOB.1 levels promote the generation of cells with phenotypic and functional characteristics of Bmem. Mechanistically, overexpression of BOB.1 drives ABF1 and suppresses BCL6, favouring Bmem over LLPC or recycling GCBC. Low levels of BOB.1 are sufficient for LLPC but not for Bmem differentiation. Our findings demonstrate a novel role for BOB.1 in B cells during TD GC responses and suggest that its dysregulation may contribute to the pathogenesis of RA by disturbing the B cell-fate determination.
Fichier principal
Vignette du fichier
2019BOB.1-s2.0-S0896841119300836-main (1).pdf (3.85 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

inserm-02145823 , version 1 (03-06-2019)



Maartje J Levels, Cynthia M Fehres, Lisa G M van Baarsen, Nathalie O P van Uden, Kristine Germar, et al.. BOB.1 controls memory B-cell fate in the germinal center reaction. Journal of Autoimmunity, 2019, Epub ahead of print. ⟨10.1016/j.jaut.2019.04.011⟩. ⟨inserm-02145823⟩
84 View
139 Download



Gmail Facebook Twitter LinkedIn More