Method for identifying or isolating a molecule and molecules...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/12 (2006.01) C07K 7/06 (2006.01) C07K 14/47 (2006.01) C07K 14/705 (2006.01) C12N 15/10 (2006.01) C12Q 1/68 (2006.01) G01N 33/53 (2006.01) G01N 33/543 (2006.01) G01N 33/569 (2006.01) G01N 33/574 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2223566

The invention described methods for identifying a molecule of interest, as well as nucleic acid molecules which encode it, and binding partners for it. A cDNA library from a cell expressing the target is prepared, and expressed in host cells. Lysates of the host cells are screened with a sample, treated to remove interfering binding partners. The treatment involves contact of the sample to lysates of untransfected host cells, and host cells transfected or transformed with the same vector used to make the cDNA library. Also a part of the invention are antigens and cDNA identified using the methodology.

L'invention concerne des procédés d'identification d'une molécule à étudier, ainsi que des molécules d'acide nucléique codant celle-ci et des partenaires de liaison destinés à celle-ci. On prépare une banque d'ADNc à partir d'une cellule exprimant la cible, cette banque étant ensuite exprimée dans des cellules hôtes. On crible des lysats des cellules hôtes à l'aide d'un échantillon, lequel à été traité pour enlever des partenaires de liaison gênants. Ce traitement implique la mise en contact de l'échantillon avec des lysats de cellules hôtes non transfectées, puis avec des cellules hôtes transfectées ou transformées à l'aide du même vecteur que celui utilisé pour préparer la banque d'ADNc. Un aspect de l'invention concerne également des antigènes ainsi que l'ADNc identifiés à l'aide de cette méthodologie.

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