Linked Life Data

2320376

Source:http://linkedlifedata.com/resource/pubmed/id/2320376

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-5-10
pubmed:abstractText
The human teratocarcinoma NTERA-2 cl. D1 (NT2/D1) cell is a cloned multipotential embryonal cancer cell line that differentiates into a neuronal phenotype and other cellular lineages with retinoic acid (RA) treatment. Here we report that mRNA for the transforming growth factor-alpha is expressed in these RA-untreated cells and that RA-treatment results in a reduction of mRNA expression within 24 hr of treatment. In total cellular RNA, TGF-alpha mRNA is not detectable by Northern analysis at 6 days when there is increased expression of the human homeotic genes Hu-1 (Hox 2.1) and Hu-2 (Hox 2.2), known markers of RA response in NT2/D1 cells. RA treatment also causes a marked reduction in cloning efficiency and tumorigenicity of these cells. The addition of TGF-alpha or EGF (epidermal growth factor) protein to RA-untreated NT2/D1 cells augments soft agar cloning under limited fetal calf serum conditions. Blocking monoclonal antibodies directed against the EGF receptor (EGFr) can prevent this augmentation. We conclude that TGF-alpha expression inversely correlates with the state of RA-induced differentiation of this human teratocarcinoma cell and that TGF-alpha and EGF proteins are stimulatory growth factors in NT2/D1 cells under these culture conditions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0890-6467
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
233-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Retinoic acid causes a decline in TGF-alpha expression, cloning efficiency, and tumorigenicity in a human embryonal cancer cell line.
pubmed:affiliation
Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't