Linked Life Data

8088437

Source:http://linkedlifedata.com/resource/pubmed/id/8088437

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-10-19
pubmed:abstractText
The early embryonic events involved in the commitment of mesoderm to form blood have not been studied in detail for lack of molecular markers. We have studied the expression of the hematopoietic transcription factors GATA-1 and GATA-2 during Xenopus embryogenesis. During development GATA-1 expression is localized to the ventral region of the embryo and precedes the expression of embryonic globins. GATA-2 is highly expressed in the ventral region of the embryo by the end of gastrulation and later is expressed in the blood island region and the central nervous system. Lithium-induced dorsalization of embryos abrogates GATA-2 expression, and uv-induced ventralization of embryos leads to a radially symmetrical expression of GATA-2. Therefore, GATA-2 expression reflects the ventral character of the embryo. The expression of the GATA-binding proteins and globin in ventral marginal zone explants demonstrates that hematopoiesis is programmed as early as the blastula stage. GATA-1 and GATA-2 are also expressed in cultured animal cap explants, suggesting that these cells have hematopoietic potential. The developmental expression of GATA-1 and GATA-2 is consistent with their role in hematopoiesis in higher organisms and defines the ventral regions of the early embryo that give rise to hematopoietic progenitors. Our studies indicate that these genes will be useful in defining the inductive events that lead to the formation of hematopoietic mesoderm.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0012-1606
pubmed:author
pubmed:issnType
Print
pubmed:volume
165
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
193-205
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Ventral expression of GATA-1 and GATA-2 in the Xenopus embryo defines induction of hematopoietic mesoderm.
pubmed:affiliation
Department of Cell and Developmental Biology, Harvard Medical School, Cambridge, Massachusetts 02138.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't