Off-target mRNAs with partial complementarity to JMJD3 siRNA guide strand

Off-target mRNAs with partial complementarity to the JMJD3 siRNA guide strand represent a class of unintended molecular interactions occurring during RNA interference (RNAi) experiments or therapies. JMJD3, also known as KDM6B, is a histone H3K27 demethylase that plays a critical role in regulating gene expression during inflammation, development, and oncogenesis (Agger et al., 2007, Nature). When siRNAs are designed to silence JMJD3, the guide strand may bind to other mRNA transcripts that share sequence homology, particularly in the 3' untranslated region (UTR) matching the siRNA's seed sequence (Jackson et al., 2003, Nature Biotechnology). This binding leads to the degradation or translational repression of these non-target mRNAs, potentially causing phenotypic changes unrelated to JMJD3 inhibition. These off-target effects are a major hurdle in drug development, as they can lead to toxicity or false-positive results in functional genomics screens (Birmingham et al., 2006, Nature Methods). To minimize these risks, researchers employ chemical modifications, such as 2'-O-methyl groups, or use multiple siRNA sequences to validate findings (Fedorov et al., 2006, RNA). Understanding and predicting these off-target interactions is essential for the clinical translation of siRNA-based drugs targeting JMJD3.

Other names

siRNA off-target effectsSeed-sequence mediated off-targetsUnintended mRNA silencingKDM6B siRNA off-targetsRNAi off-targets

Sequence-specific mRNA degradation or translational repression via the RNA-induced silencing complex (RISC) triggered by partial complementarity, particularly within the seed region (nucleotides 2-8), to the 3' untranslated regions of unintended transcripts (Jackson et al., 2003, Nature Biotechnology).