Optimized expression of hpv 52 l1 in yeast

C - Chemistry – Metallurgy – 07 – K

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C07K 14/025 (2006.01)

Patent

CA 2560487

Synthetic DNA molecules encoding the HPV 52 L1 protein are provided. Specifically, the present invention provides polynucleotides encoding HPV 52 L1 protein, wherein said polynucleotides are codon-optimized for high level expression in a yeast cell. In alternative embodiments of the invention, the nucleotide sequence of the synthetic molecule is altered to eliminate transcription termination signals that are recognized by yeast. The synthetic molecules may be used to produce HPV 52 virus-like particles (VLPs), and to produce vaccines and pharmaceutical compositions comprising the HPV 52 VLPs. The vaccines of the present invention provide effective immunoprophylaxis against papillomavirus infection through neutralizing antibody and cell- mediated immunity and may also be useful for treatment of existing HPV infections.

L'invention concerne des molécules d'ADN synthétiques codant pour la protéine HPV 52 L1. L'invention concerne, plus spécifiquement, des polynucléotides codant pour la protéine HPV 52, lesdits polynucléotides étant optimisés en codons pour une expression de niveau élevé dans une cellule de levure. Dans d'autres modes de réalisation de l'invention, la séquence nucléotidique de la molécule synthétique est modifiée afin d'éliminer les signaux de terminaison de transcription qui sont reconnus par une levure. Les molécules synthétiques peuvent être utilisées pour produire des particules HPV 52 du type virus (VLP), et des vaccins et des compositions pharmaceutiques comprenant lesdites particules HPV 52 VLP. Les vaccins de l'invention assurent une immunoprophylaxie efficace contre une infection à papillomavirus par l'intermédiaire d'un anticorps de neutralisation et une immunité à médiation, et peuvent également être utilisés pour traiter les infections HPV existantes.

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