Oncolytic virus

A - Human Necessities – 61 – K

Patent

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Details

A61K 35/76 (2006.01) A61K 38/21 (2006.01) A61P 35/00 (2006.01) C07K 14/145 (2006.01) C12N 7/00 (2006.01) C12N 7/02 (2006.01) C12N 15/47 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2386920

The present invention is directed to a method of reducing the viability of a tumor cell involving administering a virus that is not a common human pathogen to the tumor cell. Preferably, the virus exhibits differential susceptibility, in that normal cells are not affected by the virus. This differential susceptibility is more pronounced in the presence of interferon. The tumor cell is characterized by having low levels, or no. PKR activity, or as being PKR-/-, STAT1-/- or both PKR-/- and STAT1-/-. The virus is selected from the group consisting of Rhabdovirus and picornavirus, and preferably is vesicular stomatitis virus (VSV) or a derivative thereof.

La présente invention concerne un procédé de réduction de la viabilité d'une cellule tumorale consistant à administrer un virus qui n'est pas un pathogène humain traditionnel à ladite cellule. De préférence, le virus présente une susceptibilité différentielle, caractérisée en ce que des cellules normales ne sont pas affectées par le virus. Cette susceptibilité différentielle est plus prononcée en présence d'interféron. Le cellule tumorale se caractérise par ses niveaux faibles ou l'absence d'activité PKR ou comme étant PKR-/-, STAT1-/- ou à la fois PKR-/- et STATI-/-. Le virus est sélectionné parmi le groupe comprenant le rhabdovirus et le picornavirus et est de préférence un virus de la stomatite vésiculaire (VSV) ou un dérivé correspondant.

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