Hiv-peptide-carrier-conjugates

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/16 (2006.01) A61K 31/19 (2006.01) A61K 31/47 (2006.01) A61K 31/70 (2006.01) A61K 31/715 (2006.01) A61K 38/00 (2006.01) A61K 39/00 (2006.01) A61K 39/12 (2006.01) A61K 39/21 (2006.01) A61K 39/39 (2006.01) A61P 31/18 (2006.01) A61P 37/04 (2006.01)

Patent

CA 2519165

The present invention is related to the fields of molecular biology, virology, immunology and medicine. The invention provides a modified virus-like particle (VLP) comprising a VLP which can be loaded with immunostimulatory substances, in particular with DNA oligonucleotides containing non-methylated C and G (CpGs), and particular HIV peptides linked thereto. Such CpG-VLPs are dramatically more immunogenic that their CpG-free counterparts and induce enhanced B and T cell responses. The immune response against HIV peptides optionally coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against HIV peptides are especially directed to the Th1 type. Antigens attached to CpG-loaded VLPs may therefore be ideal vaccines for prophylactic or therapeutic vaccination against allergies, tumors and other self-molecules and chronic viral diseases.

Cette invention. qui a trait aux domaines de la biologie moléculaire, de la virologie, de l'immunologie et de la médecine, concerne également une particule du type virus modifié (VLP) pouvant être unie à des substances immunostimulatrices, notamment des oligonucléotides d'ADN contenant des motifs C et G (CpG) non méthylés et des peptides particuliers du VIH liés à ceux-ci. Ces CpG VLP, qui sont hautement plus immunogènes que leurs homologues dépourvus de CpG, déclenchent des réponses accrues des lymphocytes B et T. La réponse immunitaire contre les peptides du VIH éventuellement couplés, fusionnés ou fixés aux VLP est accrue de façon semblable à celle de la réponse immunitaire contre des peptides du VIH et concerne particulièrement le type Th1. Des antigènes fixés aux VLP unies au CpG sont susceptibles des constituer des vaccins idéaux en matière de vaccination prophylactique et thérapeutique contre des allergies, des tumeurs et autres molécules du soi ainsi que contre des maladies virales chroniques.

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