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Prediction of effective RNA interference targets and pathway-related genes in lepidopteran insects by RNA sequencing analysis.

著者 Guan RB , Li HC , Miao XX
Insect Sci.2017 Jan 06 ; ():.
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When using RNAi to study gene functions in Lepidoptera insects, we discovered that some genes could not be suppressed, instead, their expression levels could be up-regulated by dsRNA. To predict which genes could be easily silenced, we treated the Asian corn borer (Ostrinia furnacalis) with dsGFP and dsMLP. A transcriptome sequence analysis was conducted using the cDNAs 6 h after treatment with dsRNA. The results indicated that 160 genes were up-regulated and 44 genes were down-regulated by the two dsRNAs. Then, 50 co-up-regulated, 25 co-down-regulated and 43 unaffected genes were selected to determine their RNAi responses. All the 25 down-regulated genes were knocked down by their corresponding dsRNA. However, several of the up-regulated and unaffected genes were up-regulated when treated with their corresponding dsRNAs instead of being knocked-down. The genes up-regulated by the dsGFP treatment may be involved in insect immune responses or the RNAi pathway. When the immune-related genes were excluded, only seven genes were induced by dsGFP, including ago-2 and dicer-2. These results not only provide a reference for efficient RNAi targets predication, but also provide some potential RNAi pathway-related genes for further study. This article is protected by copyright. All rights reserved.
PMID: 28058810 [PubMed - as supplied by publisher]
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