Compositions and methods for packaging of alphavirus vectors

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/86 (2006.01) C12N 5/10 (2006.01) C12N 7/00 (2006.01) C12N 15/40 (2006.01) C07K 14/18 (2006.01)

Patent

CA 2359013

Nucleic acid molecules are provided comprising a nucleic acid sequence which encodes, in order, an alphavirus capsid, a signal peptide, and an alphavirus E1 or E2 glycoprotein. Also provided are vectors encoding such nucleic acid molecules, and use of such vectors or expression cassettes to generate recombinant alphavirus particles and alphavirus packaging cell lines. In addition, modified alphavirus vector constructs are provided that permit reduced transgene expression during vector packaging, as well as methods of using such vector constructs for the production of alphavirus vector particles.

Cette invention a trait à une molécule d'acide nucléique comprenant une séquence nucléotidique codant, dans l'ordre, une capside alphavirale, un peptide signal et une glycoprotéine E1 ou E2 d'alphavirus. Elle porte également sur des vecteurs codant ces molécules d'acide nucléique ainsi que sur l'utilisation qui est faite de ces vecteurs ou de ces cassettes d'expression pour produire des particules d'alphavirus de recombinaison et des lignées cellulaires d'encapsidation d'alphavirus. Elle concerne, de surcroît, des produits de synthèse, en l'occurrence un vecteur d'alphavirus modifié, permettant de réduire l'expression transgénique lors d'une encapsidation de vecteur ainsi que l'utilisation qui est faite de ces produits de synthèse aux fins de la production de particules de vecteur d'alphavirus.

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