Vaccines for malaria

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/015 (2006.01) A61K 39/29 (2006.01)

Patent

CA 2657279

The present invention relates to a hybrid/ fusion protein derived from the CS protein of Plasmodium vivax (P. vivax), methods for preparing and purifying the same, its use in medicine, particularly in the prevention of malarial infections, for example those caused by P. vivax, compositions/vaccines containing the protein or antibodies against the protein such as monoclonal or polyclonal antibodies and use of the same, particularly in therapy. The invention also extends to lipoprotein particles of said hybrid protein and formulations/vaccines comprising the same and use thereof. In particular it relates to an immunogenic hybrid fusion protein comprising: a. at least one repeat unit derived from the repeating region of a type I circumsporozoite protein of P. vivax, b. at least one repeat unit derived from the repeating region of a type II circumsporozoite protein of P. vivax, and surface antigen S derived from Hepatitis B virus, or a fragment thereof

La présente invention concerne une protéine hybride/de fusion innovante, dérivée de la protéine CS de Plasmodium vivax (P. vivax), des procédés de préparation et de purification de celle-ci, son utilisation en médecine, en particulier pour la prévention des infections paludéennes, par exemple celles causées par P. vivax, des compositions/vaccins contenant la protéine ou des anticorps contre la protéine tels que des anticorps monoclonaux ou polyclonaux et leur utilisation, en particulier dans des buts thérapeutiques. L'invention concerne également des particules lipoprotéiques de ladite protéine hybride et des formulations/vaccins la comprenant et leur utilisation. L'invention concerne en particulier une protéine de fusion hybride immunogène qui comprend : (a) au moins une unité répétitive dérivée de la région répétitive d'une protéine circumsporozoïte de type I de P. vivax, (b) au moins une unité répétitive dérivée de la région répétitive d'une protéine circumsporozoïte de type II de P. vivax, et un antigène de surface S dérivé du virus de l'hépatite B, ou un fragment de celui-ci.

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