Current status of potential applications of repurposed Cas9 for structural and functional genomics of plants
2016
Seth, Kunal | Harish,
Redesigned Cas9 has emerged as a tool with various applications like gene editing, gene regulation, epigenetic modification and chromosomal imaging. Target specific single guide RNA (sgRNA) can be used with Cas9 for precise gene editing with high efficiency than previously known methods. Further, nuclease-deactivated Cas9 (dCas9) can be fused with activator or repressor for activation (CRISPRa) and repression (CRISPRi) of gene expression, respectively. dCas9 fused with epigenetic modifier like methylase or acetylase further expand the scope of this technique. Fluorescent probes can be tagged to dCas9 to visualize the chromosome. Due to its wide-spread application, simplicity, accessibility, efficacy and universality, this technique is expanding the structural and functional genomic studies of plant and developing CRISPR crops. The present review focuses on current status of using repurposed Cas9 system in these various areas, with major focus on application in plants. Major challenges, concerns and future directions of using this technique are discussed in brief.
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