Linked Life Data

2301012

Source:http://linkedlifedata.com/resource/pubmed/id/2301012

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-2-26
pubmed:abstractText
The interleukin-2 diphtheria toxin-related fusion protein (IL-2 toxin) inhibits protein and DNA synthesis IN rIL-2 (10(-10) M) stimulated T lymphoblasts in a dose-dependent fashion. However, prior to target cell death very low concentrations of rIL-2 and IL-2 toxin synergistically stimulate [3H] thymidine incorporation despite inhibition of [14C] leucine uptake. A sequential analysis of [3H] thymidine incorporation shows that high IL-2 toxin concentration (10(-9)-10(-7) M) stimulates DNA synthesis at 18 hr of culture and inhibits [3H] thymidine uptake after 24 hr, while low concentrations of IL-2 toxin (10(-12)-10(-10) M) exhibits stimulatory effects only after 24 hr of culture. Anti-Tac a monoclonal antibody directed against the p55 chain of the high affinity IL-2 receptor (IL-2R) blocks the stimulatory effects of high-dose IL-2 toxin, thereby proving that these effects are mediated through the IL-2 domain of the fusion protein. At 7 hr following interaction with IL-2R receptor (IL-2R)+ T cells, IL-2 toxin-treated cells evidence augmented transcription of the heat shock protein gene, an effect indistinguishable from those mediated by rIL-2. We conclude that interaction of IL-2 toxin with IL-2R+ T cells initially mimicks the stimulatory effects of IL-2 upon gene transcription and DNA synthesis yet concomitant inhibition of protein synthesis is evident.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0041-1337
pubmed:author
pubmed:issnType
Print
pubmed:volume
49
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
198-201
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
A kinetic analysis of the effects of interleukin-2 diphtheria toxin fusion protein upon activated T cells.
pubmed:affiliation
Charles A. Dana Research Institute, Boston, MA 02215.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.