Linked Life Data

6286108

Source:http://linkedlifedata.com/resource/pubmed/id/6286108

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1982-10-12
pubmed:abstractText
The tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) binds reversibly and with high affinity and specificity to nuclear macromolecules in mouse epidermis. The dissociation constants determined from Scatchard analysis of epidermal nuclei and nuclear macromolecules are 3.58 +/- 0.66 (S.E.) and 2.18 +/- 0.54 nM, respectively. The solubilization of TPA receptors from epidermal nuclei by DNase I was examined. Following a 20-min digestion at 22 degrees, more than a 2-fold increase in specific TPA binding was observed in the supernatant relative to non-nuclease-treated nuclei (0.71 versus 0.32 pmol/mg protein, respectively). Our data indicate that epidermal nuclei contain saturable and specific TPA-binding macromolecules and that these binding components may be associated with regions of chromatin that are preferentially susceptible to nucleolytic cleavage. These data suggest the existence of nuclear receptors for the phorbol ester tumor promoters. These observations may necessitate a more critical assessment of plasma membrane binding as the sole binding site responsible for triggering the multistep process of tumor promotion in mouse epidermis.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3496-501
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Specific high-affinity binding of the phorbol ester tumor promoter 12-O-tetradecanoylphorbol-13-acetate to isolated nuclei and nuclear macromolecules in mouse epidermis.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't