Host adaptation of retroviral vectors

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/86 (2006.01) C12N 5/10 (2006.01) C12N 15/867 (2006.01)

Patent

CA 2239783

A method of making retrovirus vectors having selected characteristics, in particular an increased ability to infect a particular target cell, comprises subjecting a starting retrovirus or retroviral vector to a selection process in vitro which involves a plurality of rounds of infection of a host cell during which the retrovirus or retroviral vector evolves to attain the selected characteristics. Components of the evolved retrovirus or retroviral vector can be used in retroviral vector production systems for producing retroviral vectors having the selected characteristics. The invention is particularly useful for preparing retroviral vectors suitable for gene therapy.

On décrit un procédé de préparation de vecteurs rétroviraux possédant des caractéristiques choisies, notamment une capacité accrue à infecter une cellule cible particulière, ce procédé consistant à soumettre un rétrovirus de départ ou un vecteur rétroviral à un processus de sélection in vitro impliquant une pluralité de cycles d'infection d'une cellule hôte, pendant lesquels le rétrovirus ou vecteur rétroviral évolue pour atteindre les caractéristiques choisies. On peut utiliser des constituants du rétrovirus ou vecteur rétroviral évolué dans des systèmes de production de vecteurs rétroviraux, afin de produire des vecteurs rétroviraux possédant les caractéristiques choisies. Cette invention est notamment utile pour préparer des vecteurs rétroviraux appropriés à la thérapie génique.

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