Methods of identifying antigen gene sequences

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/31 (2006.01) A61K 31/70 (2006.01) A61K 31/7088 (2006.01) A61K 38/16 (2006.01) A61K 39/02 (2006.01) A61P 31/04 (2006.01) C07K 14/30 (2006.01) C07K 16/12 (2006.01) C12N 15/10 (2006.01) C12Q 1/68 (2006.01) G01N 33/53 (2006.01) G01N 33/532 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2351736

The present invention relates to methods of identifying gene sequences of potential vaccine antigens. Also included are gene sequences and the polypeptides encoded by the gene sequences as well as the use of such sequences to induce a protective immune response in animals. Particularly, the invention relates to identifying potential antigen gene sequences of Mycoplasma, preferably Mycoplasma hyopneumoniae. In one aspect of the present invention there is provided a method of identifying expression proteins translated from a nucleotide sequence in an expression vector, said method comprising the use of a marker co-expressed with a protein translated from the nucleotide sequence. In a further aspect of the present invention there is provided a method of identifying a therapeutic antigenic gene sequence encoding a therapeutic antigenic protein of a disease, from a sample of nucleotide sequences. Preferably the marker is a polyHis tag.

L'invention porte sur des méthodes d'identification des séquences de gènes d'antigènes de vaccins potentiels, sur lesdites séquences et les polypeptides codées par elles, et sur l'utilisation desdites séquences pour susciter une réponse immunitaire protectrice chez l'animal. Elle porte en particulier sur les séquences de gènes d'antigènes du Mycoplasma, et de préférence, du Mycoplasma hyopneumoniae. L'un des aspects de l'invention a trait à une méthode d'identification de protéines d'expression transférées depuis une séquence nucléotidique dans un vecteur d'expression, ladite méthode comprenant l'utilisation d'un marqueur co-exprimé avec une protéine provenant de la séquence nucléotidique. Un autre aspect de l'invention a trait à une méthode d'identification d'une séquence de gènes d'antigène à usage thérapeutique codant pour une protéine antigène d'une maladie provenant d'un échantillon de séquence nucléotidique. Le marqueur préféré est un polyHis.

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