T1r3 a novel taste receptor

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/12 (2006.01) A61K 45/00 (2006.01) A61K 49/00 (2006.01) C07K 14/705 (2006.01) C07K 14/72 (2006.01) C07K 16/28 (2006.01) C07K 19/00 (2006.01) C12N 15/63 (2006.01) C12P 21/00 (2006.01) C12Q 1/02 (2006.01) G01N 33/53 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2445197

The present invention relates to the discovery, identification and characterization of a receptor protein, referred to herein as TIR3, which is expressed in taste receptor cells and associated with the perception of bitter and sweet taste. The invention encompasses T1R3 nucleotides, host cell expression systems, T1R3 proteins, fusion protein, transgenic animals that express a T1R3 transgene, and recombinant "knock-out" animals that do not express T1R3. The invention further relates to methods for identifying modulators of the T1R3-mediated taste response and the use of such modulators to either inhibit or promote the perception of bitterness or sweetness. The modulators of T1R3 activity may be used as flavor enhancers in foods, beverages and pharmaceuticals.

Cette invention concerne la découverte, l'identification ainsi que la caractérisation d'une protéine réceptrice, nommée T1R3, qui est exprimée dans les cellules réceptrices du goût et qui est associée à la perception de l'amertume et de la sucrosité. Cette invention concerne des nucléotides <U>T1R3</U>, des systèmes d'expression de cellules hôtes, des protéines T1R3, des protéines hybrides, des polypeptides et des peptides, ainsi que des anticorps dirigés contre la protéine T1R3, des animaux transgéniques qui expriment un transgène <U>T1R3</U>, ainsi que des animaux "knock-out" de recombinaison qui n'expriment pas T1R3. Cette invention concerne également des procédés d'identification de modulateurs de la réaction gustative induite par la T1R3, ainsi que l'utilisation de tels modulateurs soit pour inhiber soit pour renforcer la perception d'amertume ou de sucrosité. Les modulateurs de l'activité de T1R3 peuvent être utilisés comme réhausseur de goût dans des aliments, des boissons ou des médicaments.

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