Targeting adenovirus with use of constrained peptide motifs

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/075 (2006.01) A61K 48/00 (2006.01) C07K 1/107 (2006.01) C07K 19/00 (2006.01) C12N 15/34 (2006.01) C12N 15/62 (2006.01) C12N 15/86 (2006.01) C12N 15/861 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2263140

The present invention provides a chimeric adenovirus fiber protein, which differs from the wild-type coat protein by the introduction of a nonnative amino acid sequence in a conformationally-restrained manner. Such a chimeric adenovirus fiber protein according to the invention is able to direct entry into cells of a vector comprising the chimeric fiber protein that is more efficient than entry into cells of a vector that is identical except for comprising a wild-type adenovirus fiber protein rather than the chimeric adenovirus fiber protein. The nonnative amino acid sequences encode a peptide motif that comprises an epitope for an antibody, or a ligand for a cell surface receptor, that can be employed in cell targeting. The present invention also pertains to vectors comprising such a chimeric adenovirus fiber protein, and to methods of using such vectors.

L'invention propose une protéine fibreuse chimère d'adénovirus qui diffère de la protéine d'enveloppe du type sauvage par l'introduction d'une séquence d'acides aminés non native de manière restreinte en matière de conformation. Selon l'invention, cette protéine fibreuse chimère d'adénovirus est capable de diriger l'entrée dans des cellules d'un vecteur comprenant la protéine fibreuse chimère, ce vecteur étant plus efficace qu'un vecteur similaire comprenant une protéine fibreuse d'adénovirus du type sauvage plutôt que la protéine fibreuse chimère d'adénovirus. Les séquences d'acides aminés non natives codent pour un motif peptidique qui comprend un épitope pour un anticorps ou un ligand pour un récepteur de surface cellulaire que l'on peut utiliser dans le ciblage des cellules. Cette invention concerne également des vecteurs qui comprennent cette protéine fibreuse chimère d'adénovirus, ainsi que des procédés d'utilisation desdits vecteurs.

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