Abstract:
:The first hematopoietic and endothelial progenitors are derived from a common embryonic precursor termed the hemangioblast. The genetic cascades that regulate the differentiation of the hemangioblast to hematopoietic and endothelial cells are largely unknown. In general, much of embryonic development is coordinately regulated by temporal and spatial expression of transcription factors, such as the Homeobox (Hox) gene family. We and others isolated a divergent homeobox gene termed Hex (or Prh) that is preferentially expressed in hematopoietic and endothelial cells. Using in vitro Hex-/- embryonic stem (ES) cell differentiation, in vivo yolk sac hematopoietic progenitor assays, and chimeric mouse analysis, we found that Hex is required for differentiation of the hemangioblast to definitive embryonic hematopoietic progenitors and to a lesser extent endothelial cells. Therefore, Hex is a novel regulator of hemangioblast differentiation to hematopoietic and endothelial cells.
journal_name
Bloodjournal_title
Bloodauthors
Guo Y,Chan R,Ramsey H,Li W,Xie X,Shelley WC,Martinez-Barbera JP,Bort B,Zaret K,Yoder M,Hromas Rdoi
10.1182/blood-2003-02-0634subject
Has Abstractpub_date
2003-10-01 00:00:00pages
2428-35issue
7eissn
0006-4971issn
1528-0020pii
2003-02-0634journal_volume
102pub_type
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