Linked Life Data

18479212

Source:http://linkedlifedata.com/resource/pubmed/id/18479212

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2008-9-8
pubmed:abstractText
Pluripotent stem cells are derived from the inner cell mass of preimplantation embryos, and display the ability of the embryonic founder cells by forming all three germ lineages in vitro. It is well established that the cellular niche plays an important role in stem cell maintenance and differentiation. Stem cells generally have limited function without the specialized microenvironment of the niche that provides key cell-cell contact, soluble mediators, and extracellular matrices. We were interested in the role that Wnt signaling, in particular Wnt3a, played in human embryonic stem cell (hESC) differentiation to hepatic endoderm in vitro. hESC differentiation to hepatic endoderm was efficient in pure stem cell populations. However, in younger hESC lines, generating stromal cell mesenchyme, our model was very inefficient. The negative effect of stroma could be reversed by pretreating hESCs with Wnt3a prior to the onset of hepatocyte differentiation. Wnt3a pretreatment reinstated efficient hESC differentiation to hepatic endoderm. These studies represent an important step in understanding hepatocyte differentiation from hESCs and the role played by the cellular niche in vitro.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1536-2302
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
331-9
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
The inhibitory role of stromal cell mesenchyme on human embryonic stem cell hepatocyte differentiation is overcome by Wnt3a treatment.
pubmed:affiliation
MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't