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- W4296025434 abstract "Abstract SATB1 (Special A-T rich Binding protein 1) is a cell type specific factor involved in chromatin remodelling events that participate in the regulation of the genetic network in developing T cells and neurons. In T cells, SATB1 is a key factor required for lineage commitment, VDJ recombination, development and maturation. In B cells, SATB1 is described as binding to the MARs-Eµ regions of the IgH locus. Considering that its expression varies during differentiation, the involvement of this factor needed to be clarified in B cells. Using a KO mouse model deleting SATB1 from the pro-B cell stage, we were able to examine the consequences of SATB1 deletion in naive and activated B cell subsets. Our model indicates firstly that SATB1 is not essential for B cell development and the establishment of a broad IgH repertoire. Second, we show that this factor exhibits an ambivalent function in mature B cells, acting sequentially as a positive and negative regulator of Ig gene transcription in naive and activated cells, respectively. Third, our study indicates that the negative regulatory function of SATB1 in B cells extends to the germinal center response in which this factor limits somatic hypermutation of Ig genes. This finding suggests that SATB1 may limit the introduction of unwanted mutations into B cells." @default.
- W4296025434 created "2022-09-17" @default.
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- W4296025434 date "2022-09-07" @default.
- W4296025434 modified "2023-10-18" @default.
- W4296025434 title "A dual function for the chromatin organizer Special A-T rich Binding Protein 1 in B-lineage cells" @default.
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- W4296025434 doi "https://doi.org/10.1101/2022.09.06.506747" @default.
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