Publication Date:
1993-03-26
Description:
The eukaryotic transcription factor nuclear factor-kappa B (NF-kappa B) participates in many parts of the genetic program mediating T lymphocyte activation and growth. Nuclear expression of NF-kappa B occurs after its induced dissociation from its cytoplasmic inhibitor I kappa B alpha. Phorbol ester and tumor necrosis factor-alpha induction of nuclear NF-kappa B is associated with both the degradation of performed I kappa B alpha and the activation of I kappa B alpha gene expression. Transfection studies indicate that the I kappa B alpha gene is specifically induced by the 65-kilodalton transactivating subunit of NF-kappa B. Association of the newly synthesized I kappa B alpha with p65 restores intracellular inhibition of NF-kappa B DNA binding activity and prolongs the survival of this labile inhibitor. Together, these results show that NF-kappa B controls the expression of I kappa B alpha by means of an inducible autoregulatory pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, S C -- Ganchi, P A -- Ballard, D W -- Greene, W C -- 5T32CA09111/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Mar 26;259(5103):1912-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gladstone Institute of Virology and Immunology, University of California, San Francisco.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8096091" target="_blank"〉PubMed〈/a〉
Keywords:
CD4-Positive T-Lymphocytes/metabolism
;
Cell Line
;
Cell Nucleus/metabolism
;
Cycloheximide/pharmacology
;
Cytoplasm/metabolism
;
DNA/metabolism
;
DNA-Binding Proteins/*genetics
;
*Gene Expression Regulation
;
Humans
;
*I-kappa B Proteins
;
Immunoblotting
;
Kinetics
;
Molecular Weight
;
Mutagenesis
;
NF-kappa B/*antagonists & inhibitors/genetics/*physiology
;
RNA, Messenger/biosynthesis
;
Tetradecanoylphorbol Acetate/pharmacology
;
Trans-Activators/pharmacology
;
Transfection
;
Tumor Necrosis Factor-alpha/pharmacology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
