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• W3196804957 abstract "Many circular RNAs (circRNAs) are differentially expressed in different tissues or cell types, suggestive of specific factors that regulate their biogenesis. Here, taking advantage of available mutation strains of RNA-binding proteins (RBPs) in Caenorhabditis elegans, I performed a screening of circRNA regulation in 13 conserved RBPs. Among them, loss of FUST-1, the homolog of Fused in Sarcoma (FUS), caused downregulation of multiple circRNAs. By rescue experiments, I confirmed FUST-1 as a circRNA regulator. Through RNA sequencing using circRNA-enriched samples, circRNAs targets regulated by FUST-1 were identified globally, with hundreds of them significantly altered. Furthermore, I showed that FUST-1 regulates circRNA formation with only small to little effect on the cognate linear mRNAs. When recognizing circRNA pre-mRNAs, FUST-1 can affect both exon-skipping and circRNA in the same genes. Moreover, I identified an autoregulation loop in fust-1, where FUST-1, isoform a (FUST-1A) promotes the skipping of exon 5 of its own pre-mRNA, which produces FUST-1, isoform b (FUST-1B) with different N-terminal sequences. FUST-1A is the functional isoform in circRNA regulation. Although FUST-1B has the same functional domains as FUST-1A, it cannot regulate either exon-skipping or circRNA formation. This study provided an in vivo investigation of circRNA regulation, which will be helpful to understand the mechanisms that govern circRNA formation." @default.
• W3196804957 created "2021-09-13" @default.
• W3196804957 creator A5004536131 @default.
• W3196804957 date "2021-09-07" @default.
• W3196804957 modified "2023-10-10" @default.
• W3196804957 title "An autoregulation loop in<i>fust-1</i>for circular RNA regulation in<i>Caenorhabditis elegans</i>" @default.
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• W3196804957 doi "https://doi.org/10.1093/genetics/iyab145" @default.
• W3196804957 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8570788" @default.
• W3196804957 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34740247" @default.
• W3196804957 hasPublicationYear "2021" @default.
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