Abstract
RNA interference (RNAi) is a biological process by which double-stranded RNA (dsRNA) induces sequence-specific gene silencing by targeting mRNA for degradation. As a tool for knocking down the expression of individual genes posttranscriptionally, RNAi has been widely used to study the cellular function of genes. In this chapter, I describe procedures for using gene-specific, synthetic, short interfering RNA (siRNA) to induce gene silencing in mammalian cells. Protocols for using lipid-based transfection reagents and electroporation techniques are provided. Potential challenges and problems associated with the siRNA technology are also discussed.
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