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Series GSE173583 Query DataSets for GSE173583
Status Public on May 26, 2022
Title HIC2 represses BCL11A transcription to regulate hemoglobin switching during development (Capture-C)
Organism Homo sapiens
Experiment type Other
Summary The switch from fetal to adult hemoglobin production has been studied in great depth in part because of its relevance to the treatment of hemolobinopathies. Transcription factor BCL11A, which is essential for repression of the fetal beta-type globin (γ-globin) genes after birth, is largely controlled at the level of transcription but the mechanism of BCL11A developmental control is unknown. Here, using a CRISPR-Cas9 screen in human erythroblasts, we identify transcription factor HIC2 as a repressor of BCL11A transcription. HIC2 and BCL11A expression are anti-correlated in fetal and adult erythroblasts. Forced expression of HIC2 in adult erythroblasts silences BCL11A transcription and markedly induces γ-globin expression. HIC2 binds selectively to constituent erythroid developmental BCL11A enhancer to reduce chromatin accessibility and impair access by transcription factor GATA1, resulting in loss of enhancer activity and enhancer-promoter contacts. Conversely, loss of HIC2 in fetal erythroblasts increases enhancer accessibility, enables GATA1 binding and induces BCL11A transcription. HIC2 is unveiled as a critical evolutionarily conserved regulator of globin gene switching by imposing developmental control on the BCL11A gene.
Overall design HIC2 overexpression
Contributor(s) Huang P
Citation(s) 35941187
Submission date Apr 29, 2021
Last update date Aug 25, 2022
Contact name Peng Huang
Organization name Guangzhou Medical University
Department GMU-GIBH Joint School of Life Sciences
Lab Peng Huang
Street address Xinzao, Panyu District
City Guangzhou
State/province Guangdong
ZIP/Postal code 511436
Country China
Platforms (1)
GPL30173 NextSeq 2000 (Homo sapiens)
Samples (8)
GSM5271196 Capture-C HUDEP2 cells WT rep1
GSM5271197 Capture-C HUDEP2 cells WT rep2
GSM5271198 Capture-C HUDEP2 cells WT rep3
This SubSeries is part of SuperSeries:
GSE173587 HIC2 represses BCL11A transcription to regulate hemoglobin switching during development
BioProject PRJNA726212
SRA SRP317335

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Supplementary file Size Download File type/resource
GSE173583_BCL_3096_3099_WT_nor.bigwig 361.3 Kb (ftp)(http) BIGWIG
GSE173583_BCL_3100_3103_HIC2_OE_nor.bigwig 324.0 Kb (ftp)(http) BIGWIG
GSE173583_HS3_3096_3099_WT_nor.bigwig 577.7 Kb (ftp)(http) BIGWIG
GSE173583_HS3_3100_3103_HIC2_OE_nor.bigwig 533.0 Kb (ftp)(http) BIGWIG
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Processed data are available on Series record

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