NF-kappa B controls expression of inhibitor I kappa B alpha: evidence for an inducible autoregulatory pathway
摘要：
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.
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关键词：
CD4-Positive T-Lymphocytes Cell Line Cell Nucleus Cytoplasm Humans Tetradecanoylphorbol Acetate Cycloheximide Tumor Necrosis Factor-alpha DNA-Binding Proteins NF-kappa B
DOI：
10.1126/science.8096091
被引量：
年份：
1993
BMJ
万方医学
dx.doi.org
BioMed Central
NCBI
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