Abstract
RNA interference (RNAi) is one of the most popular and effective molecular technologies for knocking down the expression of an individual gene of interest in living organisms. Yet the technology still faces the major issue of nonspecific gene silencing, which can compromise gene functional characterization and the interpretation of phenotypes associated with individual gene knockdown. Designing an effective and target-specific small interfering RNA (siRNA) for induction of RNAi is therefore the major challenge in RNAi-based gene silencing. A ‘good’ siRNA molecule must possess three key features: (a) the ability to specifically silence an individual gene of interest, (b) little or no effect on the expressions of unintended siRNA gene targets (off-target genes), and (c) no cell toxicity. Although several siRNA design and analysis algorithms have been developed, only a few of them are specifically focused on gene silencing in plants. Furthermore, current algorithms lack a comprehensive consideration of siRNA specificity, efficacy, and nontoxicity in siRNA design, mainly due to lack of integration of all known rules that govern different steps in the RNAi pathway. In this review, we first describe popular RNAi methods that have been used for gene silencing in plants and their serious limitations regarding gene-silencing potency and specificity. We then present novel, rationale-based strategies in combination with computational and experimental approaches to induce potent, specific, and nontoxic gene silencing in plants.
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Acknowledgment
This work was supported by the National Science Foundation (Grant DBI: 0960897 to P.X.Z.) and The Samuel Roberts Noble Foundation.
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Ahmed, F., Dai, X., Zhao, P.X. (2015). Bioinformatics Tools for Achieving Better Gene Silencing in Plants. In: Mysore, K., Senthil-Kumar, M. (eds) Plant Gene Silencing. Methods in Molecular Biology, vol 1287. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2453-0_3
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DOI: https://doi.org/10.1007/978-1-4939-2453-0_3
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