Inducible highly productive raav packaging cell-lines

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/35 (2006.01) C12N 5/00 (2006.01) C12N 5/10 (2006.01) C12N 7/01 (2006.01) C12N 15/10 (2006.01) C12N 15/864 (2006.01) C12P 19/34 (2006.01)

Patent

CA 2399576

The present invention relates to an isolated nucleic acid sequence comprising a first DNA sequence comprising a cis-acting replication element (CARE) from an Adeno-Associated Virus (AAV), and a second DNA sequence operably linked to said CARE, wherein amplification of said isolated nucleic acid sequence occurs when said isolated nucleic acid sequence is integrated in the genome of a cell and said cell is contacted with a CARE-dependent replication unducer (CARE- DRI). It also relates to amplification methods using a CARE-dependent replication inducer (CARE-DRI) and packaging cell-lines wherein replication of the integrated rep and cap genes is inducible by a CARE-DRI.

L'invention concerne une séquence d'acide nucléique isolée comprenant une première séquence d'ADN constituée d'un premier élément de réplication agissant en <i>cis</i> (CARE) provenant d'un virus adéno-associé (AAV), et une seconde séquence d'ADN liée fonctionnellement à CARE, l'amplification de ladite séquence d'acide nucléique se produisant lorsque cette séquence est intégrée dans le génome d'une cellule, et lorsque ladite cellule est en contact avec un inducteur de réplication dépendent de CARE (CARE-DRI). L'invention concerne également les méthodes d'amplification utilisant l'inducteur de réplication dépendent de CARE (CARE-DRI), et des lignées cellulaires d'encapsidation dans lesquelles la réplication des gènes intégrés <i>rep</i> et <i>cap</i> peut être induite par CARE-DRI.

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