Linked Life Data

2561944

Source:http://linkedlifedata.com/resource/pubmed/id/2561944

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-10-18
pubmed:abstractText
We have previously shown [Grabham et al. (1988) Expt. Eye Res. 47, 123-133] that the adenovirus 12 transformed human retinoblast cell line (Ad 12 HER 10), like a number of other cell types of neuroepithelial origin, can be induced to differentiate in response to exposure to dibutyryl cAMP, and that this differentiation can be rapidly reversed by foetal calf serum. We present data here to show that a single protein, which we have termed differentiation reversal factor (DRF) and have isolated from serum, is responsible for this activity. Following reversal by DRF the growth rate of these cells was shown to be stimulated in serum-free medium. Using ammonium sulphate fractionation, gel filtration chromatography (Ultrogel AcA44), anion exchange chromatography (DEAE cellulose) and preparative gel electrophoresis, DRF has been purified to homogeneity, as judged by polyacrylamide gel electrophoresis in the presence and absence of SDS. The protein has a mol. wt of 72,000 and appears to exist in vivo as a monomer. The concentration of DRF in serum is in the range 100-500 micrograms/ml and is capable of reversing cAMP-induced differentiation of various primary human neuroepithelial cells at physiological concentrations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0898-6568
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
269-81
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Purification of a serum factor which reverses dibutyryl cAMP induced differentiation.
pubmed:affiliation
Department of Cancer Studies, University of Birmingham, Medical School, U.K.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't