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Series GSE215143 Query DataSets for GSE215143
Status Public on Jul 14, 2023
Title Widespread regulatory specificities between transcriptional corepressors and enhancers in Drosophila
Organism Drosophila melanogaster
Experiment type Expression profiling by high throughput sequencing
Summary Animal development and homeostasis critically depend on the accurate regulation of gene expression, which includes the silencing of genes that should not be active. Silencing or repression of transcription is mediated by a specific class of transcription factors termed repressors that, typically via the recruitment of co-repressors (CoRs), can dominantly suppress transcription, even in the presence of activating cues. Here, we used functional genomics to discover previously unknown regulatory specificities between CoRs and enhancers. Enhancers can typically be repressed by only a subset of CoRs. Enhancers classified by CoR sensitivity also show distinct biological functions and endogenous chromatin features. Moreover, enhancers that are sensitive or resistant to silencing by specific CoRs differ in TF motif content. Strikingly, we identified TF motifs that are necessary and sufficient for resistance to specific CoRs, and can predict enhancer sensitivity to CoRs based on TF motif content.
 
Overall design We evaluted the direct effect of 5 CoRepressors on the activity of enhancers in Drosophila S2 cells using a modified version of STARR-seq termed repressor-STARR-seq. The repressors CoRest, CtBP, Rbf, Rbf2 and Sin3A are fused to the Gal4-DNA-binding domain and recruited next to the enhancer library through 4xUAS sites. Additionally we also tested the effect of recruiting CtBP and Rbf upstream of the promoter or upstream of the enhancers. We performed genome-wide and BAC screens (~750bp) and desigend oligonucleotide (250bp) screens, each sample with biological replicate. Reads were internally normalized, using a spike-in control of D. Pseudoobscura enhancers, lacking the 4xUAS binding sites.
Web link http://DOI: 10.1126/science.adf6149
 
Contributor(s) Jacobs J, Pagani M, Wenzl C, Stark A
Citation(s) 37440660
Submission date Oct 10, 2022
Last update date Oct 13, 2023
Contact name Jelle Jacobs
E-mail(s) jelle.jacobs9255@gmail.com
Organization name Institute of molecular Pathology
Department VBC
Lab Stark lab
Street address Campus-Vienna-Biocenter 1
City Vienna
ZIP/Postal code 1030
Country Austria
 
Platforms (3)
GPL22106 NextSeq 550 (Drosophila melanogaster)
GPL25244 Illumina NovaSeq 6000 (Drosophila melanogaster)
GPL30203 NextSeq 2000 (Drosophila melanogaster)
Samples (60)
GSM6623161 repSTARR-seq, GFP, rep1
GSM6623162 repSTARR-seq, GFP, rep2
GSM6623163 repSTARR-seq, CoRest, rep1
Relations
BioProject PRJNA888990

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE215143_RAW.tar 446.1 Mb (http)(custom) TAR (of BW)
GSE215143_normalized_counts_BAC_screens.tsv.gz 26.8 Kb (ftp)(http) TSV
GSE215143_olig_repSTARR_seq_DSCP_raw_and_norm_counts.tsv.gz 2.5 Mb (ftp)(http) TSV
GSE215143_olig_repSTARR_seq_Rps12_raw_and_norm_counts.tsv.gz 2.5 Mb (ftp)(http) TSV
GSE215143_spike-in.normalized.reads.over.gw.enhancers.txt.gz 216.1 Kb (ftp)(http) TXT
SRA Run SelectorHelp
Raw data are available in SRA
Processed data are available on Series record
Processed data provided as supplementary file

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