Abstract
GATA-1 protein is thought to be a positive regulator of erythroid differentiation. However, ectopic expression of a conditional GATA-2/estrogen receptor chimera was shown to inhibit erythroid differentiation in a hormone-dependent manner, suggesting the negative regulation of erythroid differentiation by GATA-2 protein. Accordingly, we reasoned that the quantitative balance of GATA-1 and GATA-2 protein might affect erythroid differentiation. In this report, we performed specific and quantitative measurements of GATA-1 and GATA-2 protein in a new erythroid cell line, SAM-1, after treatment with 12-O-tetradecanoylphorbol 13-acetate (TPA). On the basis of these measurements, we show that TPA-induced arrest of erythroid differentiation is coupled with the upregulation of GATA-2 protein, as well as the downregulation of GATA-1 protein. Our results suggest that it is the precise quantitative balance of GATA-1 and GATA-2 protein that regulates erythroid differentiation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
