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- W3080823035 endingPage "e202000654" @default.
- W3080823035 startingPage "e202000654" @default.
- W3080823035 abstract "The activated B-cell (ABC) to plasmablast transition encompasses the cusp of antibody-secreting cell (ASC) differentiation. We explore this transition with integrated analysis in human cells, focusing on changes that follow removal from CD40-mediated signals. Within hours of input signal loss, cell growth programs shift toward enhanced proliferation, accompanied by ER-stress response, and up-regulation of ASC features. Clustering of genomic occupancy for IRF4, BLIMP1, XBP1, and CTCF with histone marks identifies a dichotomy: XBP1 and IRF4 link to induced but not repressed gene modules in plasmablasts, whereas BLIMP1 links to modules of ABC genes that are repressed, but not to activated genes. Between ABC and plasmablast states, IRF4 shifts away from AP1/IRF composite elements while maintaining occupancy at IRF and ETS/IRF elements. This parallels the loss of BATF expression, which is identified as a potential BLIMP1 target. In plasmablasts, IRF4 acquires an association with CTCF, a feature maintained in plasma cell myeloma lines. Thus, shifting occupancy links IRF4 to both ABC and ASC gene expression, whereas BLIMP1 occupancy links to repression of the activation state." @default.
- W3080823035 created "2020-09-01" @default.
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- W3080823035 date "2020-08-25" @default.
- W3080823035 modified "2023-09-27" @default.
- W3080823035 title "A dichotomy of gene regulatory associations during the activated B-cell to plasmablast transition" @default.
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- W3080823035 doi "https://doi.org/10.26508/lsa.202000654" @default.
- W3080823035 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7471511" @default.
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- W3080823035 hasPublicationYear "2020" @default.
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