Transcriptomics

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Chemically synthesized guide RNAs can direct CRISPR-CasRx cleavage of circRNAs with high efficiency and specificity


ABSTRACT: In this study, we demonstrate that CRISPR/RfxCas13d (CasRx)-mediated circRNA depletion is, for the circRNAs studied, more efficient than Argonaute 2-dependent short hairpin RNA (agoshRNA)-mediated depletion and with fewer off-target effects on the linear host RNAs. We also designed and optimally used synthetic guide RNAs (syn-gRNAs) in combination with CasRx to efficienctly deplete circRNA ciRS-7. None of the knockdown strategies tested (pre-gRNA, gRNA, syn-gRNA and agoshRNA) showed any significant off-target effects at the transcriptomics level. Differential expression analysis was performed for each KD setup versus non-targeting control (three biological replicates of each). In conclusion, CasRx-mediated circRNA knockdown using both vector-based and syn-gRNA strategies is a useful tool for future studies on circRNA functions.

ORGANISM(S): Homo sapiens

PROVIDER: GSE189963 | GEO | 2023/04/30

REPOSITORIES: GEO

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