The suppression of zfpm-1 accelerates the erythropoietic differentiation of human CD34+ cells

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Title
The suppression of zfpm-1 accelerates the erythropoietic differentiation of human CD34+ cells
Author(s)
H Y Yang; S H Kim; Seok Ho Kim; Dong-Jun Kim; Sun-Uk Kim; Dae Yeul Yu; Young Il Yeom; D S Lee; Y J Kim; B J Park; T H Lee
Bibliographic Citation
Biochemical and Biophysical Research Communications, vol. 353, no. 4, pp. 978-984
Publication Year
2007
Abstract
Erythropoiesis is a complex multistage process for the differentiation of mature erythrocytes from hematopoietic stem cells. The function of several transcription factors has been reported in hematopoietic stem cell differentiation. However, the molecular basis governing its functional behavior is unclear. In this study, we characterized the role of Zfpm-1 during the erythropoietic differentiation of human hematopoietic stem cells. To verify the function of Zfpm-1 during erythropoietic differentiation, we established human CD34+ cell culture system by using human umbilical cord blood. At day 7 of the human CD34+ cell differentiation process to proerythocytes, Zfpm-1 was initially up-regulated and then dramatically down-regulated at day 9. The Zfpm-1 siRNA transfected HSCs contained 20% more GPA+ cells than the mock transfected cells, and showed repressed expression of the hematopoietic transcription factors, c-myc and c-myb, but increased expression of GATA-1. In contrast, the Zfpm-1 gain-of-function is the opposite of loss-of-function results above.
Keyword
c-mybc-mycerythropoiesisGATA-1hematopoietic stem cellZfpm-1Zfpm-2
ISSN
0006-291X
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.bbrc.2006.12.155
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of National Bio-Infrastructure > Futuristic Animal Resource & Research Center > 1. Journal Articles
Division of Biomedical Research > Personalized Genomic Medicine Research Center > 1. Journal Articles
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