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NF-κB Controls Expression of Inhibitor IκBα: Evidence for an Inducible Autoregulatory Pathway

Sun, Shao-Cong, Ganchi, Parham A., Ballard, Dean W., Greene, Warner C.·1993·Science

Abstract

The eukaryotic transcription factor nuclear factor-kappa B (NF-κB) participates in many parts of the genetic program mediating T lymphocyte activation and growth. Nuclear expression of NF-κB occurs after its induced dissociation from its cytoplasmic inhibitor IκBα. Phorbol ester and tumor necrosis factor-alpha induction of nuclear NF-κB is associated with both the degradation of performed IκBα and the activation of IκBα gene expression. Transfection studies indicate that the IκBα gene is specifically induced by the 65-kilodalton transactivating subunit of NF-κB. Association of the newly synthesized IκBα with p65 restores intracellular inhibition of NF-κB DNA binding activity and prolongs the survival of this labile inhibitor. Together, these results show that NF-κB controls the expression of IκBα by means of an inducible autoregulatory pathway.

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Metadata

Authors
Sun, S.-C., Ganchi, P. A., Ballard, D. W., & Greene, W. C.
Venue
Science
Published
1993-03-26
Volume
259
Issue
5103
Pages
1912-1915
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2051831012
Cited by
1,104
References
0
FWCI
39.92
Type
journal article
Language
en
Open access
closed

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