Hypothalamus-specific polypeptides

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/16 (2006.01) A61K 38/22 (2006.01) A61P 5/02 (2006.01) A61P 25/00 (2006.01) C07K 14/575 (2006.01) C12N 15/63 (2006.01) C12Q 1/68 (2006.01) G01N 33/53 (2006.01) G01N 33/74 (2006.01) C07K 16/26 (2006.01)

Patent

CA 2261565

Directional tag PCR substractive hybridization was used to construct a rat hypothalamic cDNA library from which cerebellar and hippocampal sequences had been depleted. Hypocretin, one of several novel hypothalamic-specific polypeptides identified, isolated and sequenced, is localized to regions of the hypothalamus involved in appetite and feeding behavior. Hypocretin polypeptides are biologically active, producing electrical changes in neurons, lowering body temperature and reducing food intake. The invention provides hypocretin polynucleotides and hypocretin polypeptides as well as antibodies, oligonucleotides, diagnostic kits and methods, and therapeutic compositions and methods.

La présente invention résulte d'une hybridation soustractive par amplification en chaîne par polymérase (ACP) à marquage ciblé qui a permis de constituer une échantillothèque d'ADNc de l'hypothalamus du rat à partir de laquelle on a obtenu par déplétion des séquences cérebelleuses et hippocampiques. L'hypocrétine, qui est l'un des différents polypeptides spécifiques de l'hypothalamus récemment identifiés, isolés et séquencés, se limite aux régions de l'hypothalamus intervenant dans l'appétit et le comportement alimentaire. Les polypeptides de type hypocrétine sont biologiquement actifs, produisent des modifications électriques dans les neurones, abaissent la température corporelle et réduisent les prises alimentaires. La présente invention concerne donc des polynucléotides de l'hypocrétine et des polypeptides de type hypocrétine, ainsi que des anticorps, des oligonucléotides, des nécessaires et procédés de diagnostic, et des compositions thérapeutiques et les thérapies correspondantes.

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