Ikb kinase, subunits thereof, and methods of using same

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/54 (2006.01) A61K 31/7088 (2006.01) A61K 48/00 (2006.01) C07K 16/40 (2006.01) C12N 5/10 (2006.01) C12N 9/12 (2006.01) C12N 15/11 (2006.01) C12N 15/63 (2006.01) C12Q 1/48 (2006.01) C12Q 1/68 (2006.01) G01N 33/573 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2281955

The present invention provides an isolated nucleic acid molecule encoding I.KAPPA.B kinase (IKK) catalytic subunit polypeptides, which are associated with an IKK serine protein kinase that phosphorylates a protein (I.KAPPA.B) that inhibits the activity of the NF-.KAPPA.B transcription factor, vectors comprising such nucleic acid molecules and host cells containing such vectors. In addition, the invention provides nucleotide sequences that can bind to a nucleic acid molecule of the invention, such nucleotide sequences being useful as probes or as antisense molecules. The invention also provides isolated IKK catalytic subunits, which can phosphorylate an I.KAPPA.B protein, and peptide portions of such IKK subunit. In addition, the invention provides anti-IKK antibodies, which specifically bind to an IKK complex or an IKK catalytic subunit, and IKK-binding fragments of such antibodies. The invention further provides methods of substantially purifying an IKK complex, methods of identifying an agent that can alter the association of an IKK complex or an IKK catalytic subunit with a second protein, and methods of identifying proteins that can interact with an IKK complex or an IKK catalytic subunit.

La présente invention concerne des molécules d'acides nucléiques isolées, codant des polypeptides de la sous-unité catalytique de la kinase I kappa B (IKK), qui sont associées à une protéine kinase sérine phosphorylant une protéine (I kappa B) qui inhibe l'activité du facteur de transcription NF- kappa B; des vecteurs contenant ces molécules d'acides nucléiques; et des cellules hôtes contenant ces vecteurs. En outre, l'invention concerne des séquences nucléotidiques qui peuvent se fixer sur une molécule d'acides nucléiques de l'invention, ces séquences nucléotidiques étant utilisées comme sondes ou comme molécules anti-sens. L'invention concerne également des sous-unités catalytiques isolées de l'IKK qui peuvent phosphoryler une protéine I kappa B et des parties peptidiques de cette sous-unité de l'IKK. En outre, l'invention traite d'anticorps anti-IKK, qui se fixent de manière spécifique à un complexe de l'IKK ou à une sous-unité catalytique de l'IKK, ainsi que des fragments se fixant sur l'IKK de ces anticorps. L'invention concerne par ailleurs des procédés de purification sensible d'un complexe de l'IKK, des procédés d'identification d'un agent qui peut modifier l'association d'un complexe de l'IKK, ou d'une sous-unité catalytique de l'IKK, avec une seconde protéine, et des procédés d'identification de protéines qui peuvent interagir avec un complexe de l'IKK ou une sous-unité catalytique de l'IKK.

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