PUBLICATION

TALE factors use two distinct functional modes to control an essential zebrafish gene expression program

Authors
Ladam, F., Stanney, W., Donaldson, I.J., Yildiz, O., Bobola, N., Sagerström, C.G.
ID
ZDB-PUB-180622-6
Date
2018
Source
eLIFE   7: (Journal)
Registered Authors
Sagerström, Charles
Keywords
developmental biology, stem cells, zebrafish
Datasets
GEO:GSE102662
MeSH Terms
  • Animals
  • Blastula/embryology
  • Blastula/metabolism
  • CCAAT-Binding Factor/genetics
  • CCAAT-Binding Factor/metabolism
  • Gene Expression Regulation, Developmental*
  • Gene Knockdown Techniques
  • Gene Regulatory Networks
  • Genes, Essential/genetics*
  • Homeodomain Proteins/genetics*
  • Homeodomain Proteins/metabolism
  • Protein Binding
  • Zebrafish/embryology
  • Zebrafish/genetics*
  • Zebrafish/metabolism
  • Zebrafish Proteins/genetics*
  • Zebrafish Proteins/metabolism
PubMed
29911973 Full text @ Elife
Abstract
TALE factors are broadly expressed embryonically and known to function in complexes with transcription factors (TFs) like Hox proteins at gastrula/segmentation stages, but it is unclear if such generally expressed factors act by the same mechanism throughout embryogenesis. We identify a TALE-dependent gene regulatory network (GRN) required for anterior development and detect TALE occupancy associated with this GRN throughout embryogenesis. At blastula stages, we uncover a novel functional mode for TALE factors, where they occupy genomic DECA motifs with nearby NF-Y sites. We demonstrate that TALE and NF-Y form complexes and regulate chromatin state at genes of this GRN. At segmentation stages, GRN-associated TALE occupancy expands to include HEXA motifs near PBX:HOX sites. Hence, TALE factors control a key GRN, but utilize distinct DNA motifs and protein partners at different stages - a strategy that may also explain their oncogenic potential and may be employed by other broadly expressed TFs.
Genes / Markers
Figures
Figure Gallery
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes