Linked Life Data

9719442

Source:http://linkedlifedata.com/resource/pubmed/id/9719442

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1998-9-3
pubmed:abstractText
Recent studies have indicated that two elements in addition to the glucocorticoid response element (GRE) are involved in the induction of the endogenous TAT gene in FuS-5 rat hepatoma cells. The first is the 21 bp glucocorticoid modulatory element (GME) at -3648 bp, which causes reporter constructs to display both a left shift in the dose-response curve for glucocorticoids and increased percentages of agonist activity for antiglucocorticoids. The second is a negative element at -3340 to -3050 that blocks the action of the GME. This last observation raised the question of how GME activity can be expressed in Fu5-5 cells in the intact TAT gene that contains both the GME and the negative element. The present study identifies a third element, a "neutralizing" sequence, that restores the activity of the GME even when otherwise inactivated by the negative element. This neutralizing sequence was located within the region surrounding the GREs of the TAT gene but is separate from the GREs. The activity of the individual GME and negative elements was found to depend upon spacing. However, in combination with the natural GRE, the native TAT gene spacing of the GME and negative elements was able to reproduce the activity of the intact gene. Thus, a total of three additional elements (an activator, a negative element, and a neutralizer) appear to cooperate with the GREs in glucocorticoid induction of the TAT gene in Fu5-5 cells. While such a grouping of elements may be novel among steroid regulated genes, it is a not uncommon occurrence for the transcriptional control of other genes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0960-0760
pubmed:author
pubmed:issnType
Print
pubmed:volume
66
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
79-91
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Modulation of TAT gene induction by glucocorticoids involves a neutralizing sequence.
pubmed:affiliation
Steroid Hormones Section, NIDDK/LMCB, National Institutes of Health, Bethesda, MD 20892, USA. steroids@helix.nih.gov
pubmed:publicationType
Journal Article