Mammalian chk1 effector cell-cycle checkpoint protein kinase...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/54 (2006.01) C07K 16/40 (2006.01) C12N 1/21 (2006.01) C12N 9/12 (2006.01) C12N 15/70 (2006.01) C12Q 1/48 (2006.01)

Patent

CA 2270911

The present invention generally relates to genes encoding cell cycle checkpoint kinase related proteins essential to meiosis, mitosis, and DNA damage responses in cells and the respective proteins. These kinases arrest the cell cycle following DNA damage to allow DNA repair prior to mitosis, meiosis, or initiation of DNA replication. More particularly, the invention provides a novel cycle checkpoint kinase, Chkl, and polynucleotide sequences encoding Chkl. Assays for identifying modulators of Chkl are also disclosed. Modulators are useful for example, in chemotherapy and as radiation adjuvants.

La présente invention concerne d'une manière générale des gènes codant des protéines associées à la kinase point de contrôle du cycle cellulaire essentielles à la méiose, à la mitose et aux réactions à la détérioration de l'ADN dans des cellules, ainsi que des protéines respectives. Ces kinases arrêtent le cycle cellulaire suite à la détérioration de l'ADN afin de permettre la réparation de l'ADN avant la mitose, la méiose ou le début de la réplication de l'ADN. Plus particulièrement, l'invention concerne une nouvelle kinase point de contrôle du cycle, Chk1, et des séquences polynucléotidiques codant Chk1. L'invention concerne également des dosages permettant d'identifier des modulateurs de Chk1. Ces modulateurs sont utiles, notamment, en chimiothérapie et comme adjuvants de rayonnement.

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