Modified retinoblastoma tumor suppressor proteins

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/12 (2006.01) A61K 31/70 (2006.01) A61K 38/17 (2006.01) C07K 14/47 (2006.01) C12N 5/10 (2006.01) A61K 38/00 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2281899

Disclosed are modified broad-spectrum retinoblastoma tumor suppressor proteins that have at least the same, and in most cases higher biological activity than the corresponding wild-type retinoblastoma tumor suppressor protein. Exemplary modified retinoblastoma tumor suppressor proteins have a modified N-terminal region, in particular comprising one or more deletions and/or mutations. Also disclosed are methods of making and using the modified retinoblastoma tumor suppressor proteins, particularly in circumstances where inhibition of cell growth is desired. Thus the present disclosure provides methods for treating diseases, as exemplified by, but not limited to cancer, that are characterized by abnormal cellular proliferation.

Cette invention se rapporte à des protéines de suppression des rétinoblastomes, à large spectre d'efficacité, qui possèdent au minimum une activité biologique identique, et dans la plupart des cas une activité biologique supérieure, à celle de la protéine correspondante de suppression des rétinoblastomes du type sauvage. Les protéines de la présente invention possèdent une région N-terminale modifiée, ladite région comportant notamment des délétions et/ou des mutations. La présente invention se rapporte également à des procédés de fabrication et d'utilisation desdites protéines modifiées de suppression des rétinoblastomes, notamment dans les cas où l'on souhaite inhiber la croissance cellulaire. Cette invention se rapporte par conséquent à des procédés de traitement de maladies, et notamment, mais pas exclusivement, du cancer, de telles maladies se caractérisant par une prolifération cellulaire anormale.

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