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Nat Biotechnol. 2003 Jun;21(6):635-7. Epub 2003 May 18.

Expression profiling reveals off-target gene regulation by RNAi.

Author information

  • 1Rosetta Inpharmatics LLC, 12040 115th Avenue NE, Kirkland, Washington 98034, USA. aimee_jackson@merck.com

Abstract

RNA interference is thought to require near-identity between the small interfering RNA (siRNA) and its cognate mRNA. Here, we used gene expression profiling to characterize the specificity of gene silencing by siRNAs in cultured human cells. Transcript profiles revealed siRNA-specific rather than target-specific signatures, including direct silencing of nontargeted genes containing as few as eleven contiguous nucleotides of identity to the siRNA. These results demonstrate that siRNAs may cross-react with targets of limited sequence similarity.

PMID:
12754523
[PubMed - indexed for MEDLINE]
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