Preparation of recombinant rotavirus proteins in milk of...

A - Human Necessities – 01 – K

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A01K 67/027 (2006.01) A61K 39/00 (2006.01) C12N 15/62 (2006.01)

Patent

CA 2557953

The present invention relates to a non-human transgenic mammal whose genome comprises : i) a first transgene comprising a mammary gland specific transcriptional control region operably linked to cDNA encodong a rotavirus protein selected from VP2, VP4, VP6 and VP7 and wherein said cDNA comprises a secretion signal sequence; ii) at least a second transgene comprising a mammary gland specific transcriptional control region operably linked to cDNA encoding another said rotavirus protein and wherein said cDNA comprises a secretion signal sequence; and wherein said rotavirus proteins are secreted separately and auto-assembled in milk in rotavirus like particles (VLP) or aggregates of said rotavirus proteins.

La présente invention concerne un mammifère transgénique non humain dont le génome comprend: i) un premier transgène comprenant une région de contrôle transcriptionnelle propre aux glandes mammaires reliée de manière fonctionnelle à un ADNc codant pour une protéine de rotavirus choisie parmi VP2, VP4, VP6 et VP7 ; lequel ADNc contient une séquence signal de sécrétion; ii) au moins un second transgène contenant une région de contrôle transcriptionnelle propre aux glandes reliée de manière fonctionnelle à un ADNc codant pour une autre protéine de rotavirus ; lequel ADNc contient une séquence signal de sécrétion. Les protéines de rotavirus décrites dans cette invention sont sécrétées séparément et auto-assemblées dans le lait en particules de type rotavirus (VLP) ou agrégats de protéines de rotavirus.

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