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Example sentences for: dsrnas
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By 2001, plant scientists working on RNA-directed DNA methylation and TGS had demonstrated a requirement for dsRNAs that are processed to short RNAs, reinforcing a mechanistic link to PTGS (Mette et al.
Lastly, elevated phosphorylation of eIF-2α has been used as a diagnostic marker of IFN response [ 30 ] . We, therefore, examined the phosphorylation status of eIF-2α in A549 cells following transfection with these dsRNAs.
Together, these results directly demonstrate that the dsRNAs promote ablation of the specific mRNA target, which most likely underlies the loss of the respective proteins.
Anti-RSV dsRNAs do not activate an interferon response
To explore these issues, we used dsRNAi to reduce the levels of Arr and DFz2 RNAs in S2 cells in which Wg signaling was stimulated, since others have shown that the expression of endogenous genes in these cells can be eliminated or reduced by direct application of T7-transcribed dsRNAs [ 15 16 ] . Using this approach (Figure 2), we found that the previously observed, approximately 30-fold stimulation of luciferase activity by the Wg expression plasmid was reduced by 70% or more when S2 cells were co-transfected with inhibitory RNAs for Arr, DFz2, or both (Figure 2A), implying that endogenous levels of both types of receptor are required for an efficient response to Wg.