Oncolytic viruses as phenotyping agents for neoplasms

G - Physics – 01 – N

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G01N 33/574 (2006.01)

Patent

CA 2487824

The present invention provides a method of diagnosing neoplasms having a particular phenotype by using oncolytic viruses that selectively replicate in neoplasms having the particular phenotype. For example, reovirus does not replicate in normal cells. However, reovirus selectively replicate in cells with an activated ras pathway, which leads to death of these cells. Therefore, a cell which becomes neoplastic due to, at least in part, elevated ras pathway activities can be diagnosed by its susceptibility to reovirus replication. This invention can further be applied, using other oncolytic viruses, to the diagnosis and/or treatment of other tumors, such as interferon-sensitive tumors, p53-deficient tumors and Rb-deficient tumors. Kits useful in the diagnosis or treatment disclosed herein are also provided.

L'invention concerne un procédé permettant de diagnostiquer des néoplasmes possédant un phénotype particulier par utilisation de virus oncolytiques répliquant de manière sélective dans des néoplasmes à phénotype particulier. Par exemple, le réovirus ne réplique pas dans des cellules normales. Cependant, il réplique de façon sélective dans des cellules à voie ras activée, qui conduit à la mort de ces cellules. C'est pourquoi, une cellule qui devient néoplastique, du moins en partie, du fait des activités de voie ras élevée peut être diagnostiquée par sa susceptibilité à la réplication du réovirus. Cette invention peut, en outre, s'appliquer au diagnostic et/ou au traitement d'autres tumeurs, par utilisation d'autres virus oncolytiques, telles que des tumeurs sensibles aux interférons, aux tumeurs déficientes en p53 et aux tumeurs déficientes en Rb. L'invention concerne également des nécessaires utiles dans le diagnostic ou le traitement.

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