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• W1488327712 endingPage "2296" @default.
• W1488327712 startingPage "2287" @default.
• W1488327712 abstract "Abstract CD72 is a 45-kDa glycoprotein that is predominantly expressed on cells of the B lineage, except for plasma cells. Its expression pattern is representative of many B cell-specific proteins, which are essential for B cell development and activation but are down-regulated after B cells become terminally differentiated plasma cells. We have examined the promoter region of the mouse CD72 gene to identify sequences responsible for this regulatory pattern. The CD72 gene does not have an obvious TATAA box. Primer extension assays identified multiple transcription initiation sites. Deletion analyses have identified the 255-bp minimal promoter required for tissue-specific and developmental stage-specific expression. DNase I footprinting analysis of the CD72 minimal promoter revealed three protected elements: FP I, FP II, and FP III. Sequences corresponding to FP I or III gave increased reporter gene activity specifically in B cells, but not in T cells or NIH-3T3 cells. Sequences corresponding to FP II gave increased reporter gene activity in mature B cells, but not in plasma cells or non-B cells. Electrophoretic mobility shift assays and DNase I protection analyses revealed that FP I was bound by the transcription factor PU.1/Spi-1. Transient reporter analyses with plasmid bearing the mutated PU.1 binding site showed that binding of PU.1 is necessary for the increase in CD72 promoter activity in B cells. These results suggest that the 255-bp CD72 promoter confers both tissue specificity and developmental stage specificity, and that the B cell and macrophage-specific transcription factor PU.1 is essential for regulating the tissue specificity of the mouse CD72 promoter." @default.
• W1488327712 created "2016-06-24" @default.
• W1488327712 creator A5059373180 @default.
• W1488327712 creator A5067601115 @default.
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• W1488327712 date "1998-03-01" @default.
• W1488327712 modified "2023-09-26" @default.
• W1488327712 title "PU.1/Spi-1 Is Essential for the B Cell-Specific Activity of the Mouse CD72 Promoter" @default.
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• W1488327712 doi "https://doi.org/10.4049/jimmunol.160.5.2287" @default.
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• W1488327712 hasPublicationYear "1998" @default.
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