PUBLICATION
The Zebrafish moonshine Gene Encodes Transcriptional Intermediary Factor 1gamma, an Essential Regulator of Hematopoiesis
- Authors
- Ransom, D.G., Bahary, N., Niss, K., Traver, D., Burns, C., Trede, N.S., Paffett-Lugassy, N., Saganic, W.J., Lim, C.A., Hersey, C., Zhou, Y., Barut, B.A., Lin, S., Kingsley, P.D., Palis, J., Orkin, S.H., and Zon, L.I.
- ID
- ZDB-PUB-040819-6
- Date
- 2004
- Source
- PLoS Biology 2(8): E237 (Journal)
- Registered Authors
- Bahary, Nathan, Barut, Bruce, Burns (Erter), Caroline, Hersey, Candace, Lin, Shuo, Paffett-Lugassy, Noelle, Ransom, David G., Saganic, Walter, Traver, David, Trede, Nick, Zhou, Yi, Zon, Leonard I.
- Keywords
- Zebrafish, Embryos, Hematopoiesis, Gene expression, Cell differentiation, Apoptosis, Blood, Red blood cells
- MeSH Terms
-
- Erythrocytes/cytology
- Erythrocytes/pathology*
- Mice
- Codon, Terminator
- Heterochromatin/metabolism
- Protein Binding
- Transcription Factors/genetics*
- Transcription Factors/metabolism
- Transcription Factors/physiology*
- Cell Line
- Immunoblotting
- DNA-Binding Proteins/chemistry
- Cell Nucleus/metabolism
- DNA/chemistry
- Hematopoietic Stem Cells/cytology
- Cell Survival
- Cloning, Molecular
- Hematopoiesis
- Gene Expression Regulation
- Molecular Sequence Data
- Apoptosis
- Cell Transplantation
- Alleles
- RNA, Messenger/metabolism
- Zebrafish
- Homozygote
- Animals
- Zebrafish Proteins/chemistry
- Zebrafish Proteins/genetics*
- Zebrafish Proteins/physiology*
- Transcription, Genetic
- Cell Differentiation
- Mutation
- Phenotype
- Bone Marrow Transplantation
- PubMed
- 15314655 Full text @ PLoS Biol.
Citation
Ransom, D.G., Bahary, N., Niss, K., Traver, D., Burns, C., Trede, N.S., Paffett-Lugassy, N., Saganic, W.J., Lim, C.A., Hersey, C., Zhou, Y., Barut, B.A., Lin, S., Kingsley, P.D., Palis, J., Orkin, S.H., and Zon, L.I. (2004) The Zebrafish moonshine Gene Encodes Transcriptional Intermediary Factor 1gamma, an Essential Regulator of Hematopoiesis. PLoS Biology. 2(8):E237.
Abstract
Hematopoiesis is precisely orchestrated by lineage-specific DNA-binding proteins that regulate transcription in concert with coactivators and corepressors. Mutations in the zebrafish moonshine (mon) gene specifically disrupt both embryonic and adult hematopoiesis, resulting in severe red blood cell aplasia. We report that mon encodes the zebrafish ortholog of mammalian transcriptional intermediary factor 1gamma (TIF1gamma) (or TRIM33), a member of the TIF1 family of coactivators and corepressors. During development, hematopoietic progenitor cells in mon mutants fail to express normal levels of hematopoietic transcription factors, including gata1, and undergo apoptosis. Three different mon mutant alleles each encode premature stop codons, and enforced expression of wild-type tif1gamma mRNA rescues embryonic hematopoiesis in homozygous mon mutants. Surprisingly, a high level of zygotic tif1gamma mRNA expression delineates ventral mesoderm during hematopoietic stem cell and progenitor formation prior to gata1 expression. Transplantation studies reveal that tif1gamma functions in a cell-autonomous manner during the differentiation of erythroid precursors. Studies in murine erythroid cell lines demonstrate that Tif1gamma protein is localized within novel nuclear foci, and expression decreases during erythroid cell maturation. Our results establish a major role for this transcriptional intermediary factor in the differentiation of hematopoietic cells in vertebrates.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping