You are here

Blood DOI:10.1182/blood.2021013753

A Congenital Anemia Reveals Distinct Targeting Mechanisms for Master Transcription Factor GATA1.

Publication TypeJournal Article
Year of Publication2022
AuthorsLudwig, L, Lareau, CA, Bao, EL, Liu, N, Utsugisawa, T, Tseng, AM, Myers, SA, Verboon, JM, Ulirsch, JC, Luo, W, Muus, C, Fiorini, C, Olive, ME, Vockley, CM, Munschauer, M, Hunter, A, Ogura, H, Yamamoto, T, Inada, H, Nakagawa, S, Ozono, S, Subramanian, V, Chiarle, R, Glader, B, Carr, SA, Aryee, MJ, Kundaje, A, Orkin, S, Regev, A, McCavit, T, Kanno, H, Sankaran, VG
JournalBlood
Date Published2022 Jan 14
ISSN1528-0020
Abstract

Master regulators, such as the hematopoietic transcription factor (TF) GATA1, play an essential role in orchestrating lineage commitment and differentiation. However, the precise mechanisms by which such TFs regulate transcription through interactions with specific cis-regulatory elements remain incompletely understood. Here, we describe a form of congenital hemolytic anemia caused by missense mutations in an intrinsically disordered region of GATA1, with a poorly understood role in transcriptional regulation. Through integrative functional approaches, we demonstrate that these mutations perturb GATA1 transcriptional activity by partially impairing nuclear localization and selectively altering precise chromatin occupancy by GATA1. These alterations in chromatin occupancy and concordant chromatin accessibility changes alter faithful gene expression, with failure to both effectively silence and activate select genes necessary for effective terminal red cell production. We demonstrate how disease-causing mutations can reveal regulatory mechanisms that enable the faithful genomic targeting of master TFs during cellular differentiation.

DOI10.1182/blood.2021013753
Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/35030251?dopt=Abstract

Alternate JournalBlood
PubMed ID35030251