The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 1990
Filed:
Mar. 30, 1987
Michael S Brown, Dallas, TX (US);
Joseph L Goldstein, Dallas, TX (US);
David W Russell, Dallas, TX (US);
Thomas C Sudhof, Dallas, TX (US);
Board of Regents, The University of Texas System, Austin, TX (US);
Abstract
Disclosed are discreet functionally translocatable DNA segments, termined Sterol Regulatory Elements (SRE's), which are fused to heterologous structural genes to provided sterol regulatory capability to the thus formed hybrid gene. The hybrid genes respond to sterols by decreasing the production of messenger RNA. The SRE segments contain as their primary functional nucleotide sequence, a 16 bp sequence referred to as direct repeat 2, isolated from the 5' regions of the human LDL receptor gene. DNA segments which include this 16 nucleotide long sequence similarly confer sterol regulatory capability to previously known promoters such as the HSV TK promoter. Also disclosed are discreet sequences which confer positive transcription promotion to heterologous structural genes and promoters without conferring sterol responsivity. Methods are disclosed for employing these genetic control elements in a myriad of embodiments which provide for a fine-tune control of heterologous genes. Methods are also disclosed for employing the SRE in a screening assay for drugs capable of stimulating the cell to synthesize LDL receptors.