Gene silencing using mRNA-cDNA hybrids

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Reexamination Certificate

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C536S024310, C536S024100, C536S024500

Reexamination Certificate

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07662791

ABSTRACT:
The present invention provides novel compositions and methods for suppressing the expression of a targeted gene using mRNA-cDNA duplexes. The invention further provides novel methods and compositions for generating amplified mRNA-cDNA hybrids, whose quantity is high enough to be used for the invention's gene silencing transfection. This improved RNA-polymerase chain reaction method uses thermocycling steps of promoter-linked double-stranded cDNA or RNA synthesis, in vitro transcription and then reverse transcription to amplify the amount of mRNA-cDNA hybrids up to two thousand folds within one round of the above procedure.

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