Abstract:
:In germinal centres (GC) mature B cells undergo intense proliferation and immunoglobulin gene modification before they differentiate into memory B cells or long-lived plasma cells (PC). GC B-cell-to-PC transition involves a major transcriptional switch that promotes a halt in cell proliferation and the production of secreted immunoglobulins. Here we show that the CCCTC-binding factor (CTCF) is required for the GC reaction in vivo, whereas in vitro the requirement for CTCF is not universal and instead depends on the pathways used for B-cell activation. CTCF maintains the GC transcriptional programme, allows a high proliferation rate, and represses the expression of Blimp-1, the master regulator of PC differentiation. Restoration of Blimp-1 levels partially rescues the proliferation defect of CTCF-deficient B cells. Thus, our data reveal an essential function of CTCF in maintaining the GC transcriptional programme and preventing premature PC differentiation.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Pérez-García A,Marina-Zárate E,Álvarez-Prado ÁF,Ligos JM,Galjart N,Ramiro ARdoi
10.1038/ncomms16067subject
Has Abstractpub_date
2017-07-05 00:00:00pages
16067issn
2041-1723pii
ncomms16067journal_volume
8pub_type
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