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    • 8. 发明授权
    • USE OF TRANS-ACTIVATION AND CIS-ACTIVATION TO MODULATE THE PERSISTENCE OF EXPRESSION OF A TRANSGENE
    • 反式激活和独联体活化TRANS的基因表达的持续时间调制
    • EP1135515B1
    • 2006-05-17
    • EP99964075.8
    • 1999-12-03
    • GENVEC, INC.
    • BROUGH, Douglas, E.KOVESDI, Imre
    • C12N15/861C12N15/35C12N15/38C07K14/035C07K14/075C12N15/63
    • C12N15/86C07K14/005C12N15/63C12N2710/10322C12N2710/10345C12N2710/16622C12N2830/60C12N2840/60
    • Provided are methods of modulating the persistence of the expression in a cell of a transgene, such as a transgene in a non-Herpes vector or in at least E4Δ adenoviral vector, and related systems. One method comprises contacting the cell with a non-Herpes vector comprising and expressing a gene encoding HSV ICP0, whereupon expression of HSV ICP0 the persistence of expression of the transgene is modulated. Further provided is a system for modulating the persistence of expression of a transgene, which system comprises a non-Herpes vector comprising (i) a gene encoding HSV ICP0 and (ii) a transgene, wherein the HSV ICP0 modulates the persistence of expression of the transgene and either the non-Herpes vector comprises the transgene or the system further comprises a vector, in which case the vector comprises the transgene. Another method comprises contacting the cell with an at least E4Δ adenoviral vector comprising (i) a transgene and (ii) a gene encoding a trans-acting factor, wherein the trans-acting factor modulates the persistence of expression of the transgene and the gene encoding the trans-acting factor is not from the E4 region of an adenovirus. Yet another method comprises contacting a cell simultaneously or sequentially with (i) an at least E4Δ adenoviral vector comprising a transgene and (ii) a viral vector comprising a gene encoding a trans-acting factor, which is not from the E4 region of an adenovirus and which modulates the persistence of expression of the transgene. Also provided is a system for modulating the persistence of expression of a transgene in an at least E4Δ adenoviral vector, which system comprises (i) an at least E4Δ adenoviral vector comprising a transgene and (ii) a gene encoding a trans-acting factor, wherein the gene encoding the trans-acting factor is not from the E4 region of an adenovirus, the trans-acting factor modulates the persistence of expression of the transgene, and either the at least E4Δ adenoviral vector comprises the gene encoding the trans-acting factor or the system comprises a viral vector, in which case the viral vector comprises the gene encoding the trans-acting factor.