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- W3175866730 abstract "Genome-wide mapping of transcription factor (TF) binding sites is essential to identify a TF's direct target genes in kidney development and diseases. However, due to the cellular complexity of the kidney and limited numbers of a given cell type, it has been challenging to determine the binding sites of a TF in vivo. cAMP response element-binding protein (CREB) is phosphorylated and hyperactive in autosomal dominant polycystic kidney disease (ADPKD). We focus on CREB as an example to profile genomic loci bound by a TF and to identify its target genes using low numbers of specific kidney cells.Cleavage under targets and release using nuclease (CUT&RUN) assays were performed with Dolichos biflorus agglutinin (DBA)-positive tubular epithelial cells from normal and ADPKD mouse kidneys. Pharmacologic inhibition of CREB with 666-15 and genetic inhibition with A-CREB were undertaken using ADPKD mouse models.CUT&RUN to profile genome-wide distribution of phosphorylated CREB (p-CREB) indicated correlation of p-CREB binding with active histone modifications (H3K4me3 and H3K27ac) in cystic epithelial cells. Integrative analysis with CUT&RUN and RNA-sequencing revealed CREB direct targets, including genes involved in ribosome biogenesis and protein synthesis. Pharmacologic and genetic inhibition of CREB suppressed cyst growth in ADPKD mouse models.CREB promotes cystogenesis by activating ribosome biogenesis genes. CUT&RUN, coupled with transcriptomic analysis, enables interrogation of TF binding and identification of direct TF targets from a low number of specific kidney cells." @default.
- W3175866730 created "2021-07-05" @default.
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- W3175866730 date "2021-10-01" @default.
- W3175866730 modified "2023-10-11" @default.
- W3175866730 title "Integrative Cistromic and Transcriptomic Analyses Identify CREB Target Genes in Cystic Renal Epithelial Cells" @default.
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- W3175866730 doi "https://doi.org/10.1681/asn.2021010101" @default.
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