Silent inducible virus replicons and uses thereof

C - Chemistry – Metallurgy – 12 – Q

Patent

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C12Q 1/70 (2006.01) C12N 5/10 (2006.01) C12N 15/40 (2006.01) C12N 15/63 (2006.01) C12N 15/85 (2006.01) C12N 15/86 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2358049

A recombinant cell stably transformed with a cDNA of a silent, inducible replicon encoding a recombinant protein is disclosed. Transcription of the replicon cDNA is under the control of a silent promoter inducible by a DNA virus and expression of the recombinant protein is dependent upon the presence of the DNA virus in the cell. The cell can be engineered to package the replicon upon infection by the DNA virus, leading to intercellular amplification of expression of the recombinant protein. Where the recombinant protein is a reporter gene product, the recombinant cell may be used in an assay for detecting DNA viruses. A kit for performing such an assay is also provided.

L'invention concerne une cellule recombinante transformée de manière stable par un ADNc de réplicon silencieux et inductible codant une protéine recombinante. La transcription de l'ADNc du réplicon est régie par un promoteur silencieux inductible par un virus à ADN, et l'expression de la protéine recombinante dépend de la présence du virus à ADN dans la cellule. Cette cellule peut être produite par génie génétique pour encapsuler le réplicon lors de l'infection par le virus à ADN, conduisant à une amplification intercellulaire de l'expression de la protéine recombinante. Lorsque la protéine recombinante est le produit d'un gène rapporteur, la cellule recombinante peut être utilisée dans une technique de recherche de virus à ADN L'invention concerne aussi un nécessaire permettant de réaliser cette technique.

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