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- W1552433276 abstract "Abstract IL-1beta, a pro-inflammatory cytokine, has sequences in its 3' untranslated region (UTR) that may play a role in the post-transcriptional regulation of IL-1beta production. To test this hypothesis, a series of chimeric reporter genes were developed consisting of a chloramphenicol acetyltransferase (CAT) gene the native 3'-UTR of which was replaced by the full-length IL-1beta 3'-UTR or various 3'-UTR deletion mutants. Expression of these constructs under the SV40 late promoter in THP-1 cells showed that the full-length 3'-UTR repressed constitutive CAT activity to 28% of control CAT activity. Further analysis of the 3'-UTR localized the repressor signal to an adenosine-thymidine (AdT)-rich region. Upon exposure to LPS, the full-length IL-1beta 3'-UTR mediated almost a fivefold increase in CAT activity. The LPS response was not simply loss of AdT-mediated repression; when this sequence was tested alone, it did not respond to LPS. The LPS response effect was localized to the terminal 177 base pairs of the IL-1beta 3'-UTR. The increase in CAT activity following LPS stimulation was associated with an increased CAT.IL-1beta 3'-UTR mRNA half-life, indicating at least one effect of the 3'-UTR on a post-transcriptional process. These studies demonstrate that the IL-1beta 3'-UTR is involved in the regulation of IL-1beta protein production, and a LPS response element may be in the IL-1beta 3'-UTR." @default.
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- W1552433276 date "1997-02-01" @default.
- W1552433276 modified "2023-10-16" @default.
- W1552433276 title "The 3' untranslated region of IL-1beta regulates protein production." @default.
- W1552433276 doi "https://doi.org/10.4049/jimmunol.158.3.1187" @default.
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