Journal article
Protein kinase D-HDAC5 signaling regulates erythropoiesis and contributes to erythropoietin cross-talk with GATA1
Blood, Vol.120(20), pp.4219-4228
11/15/2012
DOI: 10.1182/blood-2011-10-387050
PMCID: PMC3501719
PMID: 22983445
Abstract
In red cell development, the differentiation program directed by the transcriptional regulator GATA1 requires signaling by the cytokine erythropoietin, but the mechanistic basis for this signaling requirement has remained unknown. Here we show that erythropoietin regulates GATA1 through protein kinase D activation, promoting histone deacetylase 5 (HDAC5) dissociation from GATA1, and subsequent GATA1 acetylation. Mice deficient for HDAC5 show resistance to anemic challenge and altered marrow responsiveness to erythropoietin injections. In ex vivo studies, HDAC5
−/−
progenitors display enhanced entry into and passage through the erythroid lineage, as well as evidence of erythropoietin–independent differentiation. These results reveal a molecular pathway that contributes to cytokine regulation of hematopoietic differentiation and offer a potential mechanism for fine tuning of lineage-restricted transcription factors by lineage-specific cytokines.
Details
- Title: Subtitle
- Protein kinase D-HDAC5 signaling regulates erythropoiesis and contributes to erythropoietin cross-talk with GATA1
- Creators
- Lorrie L. Delehanty - University of VirginiaGrant C. Bullock - University of VirginiaAdam N. Goldfarb - University of Virginia
- Resource Type
- Journal article
- Publication Details
- Blood, Vol.120(20), pp.4219-4228
- Publisher
- American Society of Hematology
- DOI
- 10.1182/blood-2011-10-387050
- PMID
- 22983445
- PMCID
- PMC3501719
- ISSN
- 0006-4971
- eISSN
- 1528-0020
- Grant note
- DK090926; DK079924 / National Institutes of Health
- Language
- English
- Date published
- 11/15/2012
- Academic Unit
- Pathology
- Record Identifier
- 9984697740102771
Metrics
4 Record Views