Abstract:
:Human fibroblast cells produce beta-type interferon only in response to viral infection or treatment with an inducer such as poly(rI) X poly(rC); this event is most probably controlled at the transcriptional level (for review see ref. 1). To study the induction process, we inserted the human fibroblast interferon (IFN-beta) gene, with or without its promoter region, into recombinant simian virus 40 (SV40) plasmid vectors which subsequently were transfected into monkey AP-8 cells. We report here that upon induction with poly(rI) X poly(rC) there was a 10-30-fold increase in IFN-beta synthesis. This inducer had no effect on interferon production when the coding region only was inserted into the vector plasmid, which indicates that the promoter region is required for inducibility of this gene. Deletion mapping implicates the region between nucleotides -144 and -186 from the mRNA initiation site in the specific regulation of the IFN-beta gene. This region contains a sequence that is remarkably homologous with a consensus sequence found in the 5' flanking region of steroid hormone responsive genes, which might be involved in binding the progesterone-receptor complex.
journal_name
Naturejournal_title
Natureauthors
Tavernier J,Gheysen D,Duerinck F,Van der Heyden J,Fiers Wdoi
10.1038/301634a0subject
Has Abstractpub_date
1983-02-17 00:00:00pages
634-6issue
5901eissn
0028-0836issn
1476-4687journal_volume
301pub_type
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