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:
Dec. 30, 1997
Filed:
May. 25, 1995
So slashedren Molin, Holte, DK;
Poul Kirketerp Andersson, Frederiksberg, DK;
Kenn Axo Gerdes, Virum, DK;
Per Klemm, Frederiksberg, DK;
GX Biosystems A/S, Copenhagen, DK;
Abstract
A replicon, in which a nucleotide sequence encoding a cell killing function is regulatably expressed when the replicon is harbored in one type of host cell (primary host cell), so that cells harboring the replicon are killed under conditions under which the cell killing function is expressed, and the nucleotide sequence encoding the cell killing function is regulatably or constitutively expressed when the replicon is harbored in another type of host cell (secondary host cell), so that cells harboring the replicon are invariably killed or killed under conditions under which the cell killing function is expressed, may be used in a method of active biological containment of cells under defined environmental conditions. The biological containment principle may be utilized in the industrial production of a biosynthetic product by recombinant DNA techniques, when deliberately releasing a genetically engineered microorganism to the natural environment or in the preparation of a live vaccine. The expression of the cell killing function may be regulated by means of a promoter.