Modulating cancer cell characteristics

Chemistry: molecular biology and microbiology – Process of mutation – cell fusion – or genetic modification

Reexamination Certificate

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C435S325000, C536S024500

Reexamination Certificate

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07666676

ABSTRACT:
The hedgehog pathway in cerebellar cancer cells was modulated with siRNA specifically targeted to the shh and gli-I genes. Silencing of the two genes in a medullablastoma cell line transfected with the siRNAs caused significant reduction of mRNA specific for the targeted shh and gli-I genes and a loss of protein expression. The disclosed methods and compositions may be useful for treatment of a range of primitive neuroectodermal tumors (PNET) by shutting down or modulating the expression of gene products associated with the hedgehog pathway.

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