Amino acid and nucleic acid sequences and vaccine to control...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/435 (2006.01) A61K 38/17 (2006.01) A61K 39/00 (2006.01) A61P 33/00 (2006.01)

Patent

CA 2688587

The invention relates to the isolation and cloning of a gene, the recombinant production of the protein for which the gene codes and the use of said antigen in a vaccine preparation as purified protein and/or naked DNA in order to induce an immune response in aquatic organisms against different species of ectoparasites, including those known as sea lice, and pathogens associated with said infestations. The vaccine preparations, which are administered orally by means of dipping baths or injection, have demonstrated their effectiveness by producing an IgM-type humoral immune response and reducing the number of parasites per fish in vaccinated fish.

La présente invention concerne l'isolement et le clonage d'un gène, l'obtention par recombinaison de la protéine codée par ce gène, ainsi que l'utilisation dudit antigène dans une préparation vaccinale comme protéine purifiée et/ou comme ADN nu, pour induire une réponse immunitaire chez des organismes aquatiques contre les différentes espèces d'ectoparasites, notamment ceux connus sous le nom générique de poux de la mer, et les agents pathogènes associés à ces infestations. Les préparations vaccinales, qui sont administrées par voie orale, par des bains d'immersion ou par injection, se sont avérés efficaces, car ils déclenchent une réponse immunitaire humorale de type IgM et réduisent le nombre de parasites par poisson chez les poissons vaccinés.

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