Recombinant human interferon-like proteins

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/20 (2006.01) A61K 38/21 (2006.01) A61P 31/12 (2006.01) A61P 35/00 (2006.01) A61P 37/02 (2006.01) C07K 14/555 (2006.01) C07K 19/00 (2006.01)

Patent

CA 2692358

This application relates to recombinant human interferon-like proteins. In one embodiment a recombinant protein created by gene shuffling technology is described having enhanced anti-viral and anti-proliferative activities in comparison to naturally occurring human interferon alpha 2b (HuIFN-.alpha.2b). The invention encompasses a polynucleotide encoding the protein and recombinant vectors and host cells comprising the polynucleotide. Preferably the polynucleotide is selected from the group of polynucleotides each having a sequence at least 93% identical to SEQ ID: No. 1 and the protein is selected from the group of proteins each having an amino acid sequence at least 85% identical to SEQ ID No: 2. The proteins and compositions comprising the proteins can be used for treatment of conditions responsive to interferon therapy, such as viral diseases and cancer.

La présente invention concerne des protéines de type interféron humain recombinant. Dans un mode de réalisation, l'invention concerne une protéine recombinante créée par la technologie de réarrangement des gènes qui présente une amplification des activités antivirale et antiproliférative par comparaison à l'interféron alpha 2b humain (HuIFN-a2b) existant à l'état naturel. L'invention englobe un polynucléotide codant pour la protéine et des vecteurs recombinants et des cellules hôtes renfermant le polynucléotide. De préférence, le polynucléotide est choisi dans le groupe de polynucléotides ayant chacun une séquence au moins identique à 93 % à SEQ ID NO : 1, et la protéine est choisie dans le groupe de protéines ayant chacune une séquence d'acides aminés au moins identique à 85 % à SEQ ID NO : 2. Les protéines et les compositions comprenant les protéines peuvent servir pour le traitement d'affections sensibles à la thérapie à base d'interféron, telles que des maladies virales et le cancer.

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