PUBLICATION
GATA-6 maintains BMP-4 and Nkx2 expression during cardiomyocyte precursor maturation
- Authors
- Peterkin, T., Gibson, A., and Patient, R.
- ID
- ZDB-PUB-030813-1
- Date
- 2003
- Source
- The EMBO journal 22(16): 4260-4273 (Journal)
- Registered Authors
- Gibson, Abigail, Patient, Roger K.
- Keywords
- none
- MeSH Terms
-
- Protein Processing, Post-Translational/drug effects
- GATA6 Transcription Factor
- Animals
- Humans
- Protein Isoforms/chemistry
- Protein Isoforms/deficiency
- Protein Isoforms/drug effects
- Protein Isoforms/metabolism
- Zebrafish/embryology
- Bone Morphogenetic Proteins/metabolism*
- Myocytes, Cardiac/cytology
- Myocytes, Cardiac/physiology*
- Gene Expression Regulation, Developmental/drug effects
- Cell Differentiation
- Xenopus Proteins/metabolism*
- Models, Biological
- Molecular Sequence Data
- Xenopus/embryology
- DNA-Binding Proteins/chemistry
- DNA-Binding Proteins/deficiency
- DNA-Binding Proteins/drug effects
- DNA-Binding Proteins/metabolism*
- Mesoderm/physiology
- Endoderm/physiology
- Homeodomain Proteins/metabolism*
- Signal Transduction
- Oligonucleotides, Antisense/pharmacology
- Zinc Fingers
- Zebrafish Proteins/metabolism*
- Bone Morphogenetic Protein 4
- Transcription Factors/chemistry
- Transcription Factors/deficiency
- Transcription Factors/drug effects
- Transcription Factors/metabolism*
- Embryo, Nonmammalian/metabolism
- Base Sequence
- PubMed
- 12912923 Full text @ EMBO J.
Citation
Peterkin, T., Gibson, A., and Patient, R. (2003) GATA-6 maintains BMP-4 and Nkx2 expression during cardiomyocyte precursor maturation. The EMBO journal. 22(16):4260-4273.
Abstract
GATA-6 is expressed in presumptive cardiac mesoderm before gastrulation, but its role in heart development has been unclear. Here we show that Xenopus and zebrafish embryos, injected with antisense morpholino oligonucleotides designed specifically to knock-down translation of GATA-6 protein, are severely compromised for heart development. Injected embryos express greatly reduced levels of contractile machinery genes and, at the same stage, of regulatory genes such as bone morphogenetic protein-4 (BMP-4) and the Nkx2 family. In contrast, initial BMP and Nkx2 expression is normal, suggesting a maintenance role for GATA-6. Endoderm is critical for heart formation in several vertebrates including Xenopus, and separate perturbation of GATA-6 expression in the deep anterior endoderm and in the overlying heart mesoderm shows that GATA-6 is required in both for cardiogenesis. The GATA-6 requirement in cardiac mesoderm was confirmed in zebrafish, an organism in which endoderm is thought not to be necessary for heart formation. We therefore conclude that proper maturation of cardiac mesoderm requires GATA-6, which functions to maintain BMP-4 and Nkx2 expression.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping