The homeoprotein Hex is required for hemangioblast differentiation.

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

Blood

journal_title

Blood

authors

Guo Y,Chan R,Ramsey H,Li W,Xie X,Shelley WC,Martinez-Barbera JP,Bort B,Zaret K,Yoder M,Hromas R

doi

10.1182/blood-2003-02-0634

subject

Has Abstract

pub_date

2003-10-01 00:00:00

pages

2428-35

issue

7

eissn

0006-4971

issn

1528-0020

pii

2003-02-0634

journal_volume

102

pub_type

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