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Mapping CCR4-NOT recruitment elements at high resolution reveals transcriptome-wide determinants of mRNA decay

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE302651 | GEO | 2026/04/13

REPOSITORIES: GEO

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Mapping CCR4-NOT recruitment elements at high resolution reveals transcriptome-wide determinants of mRNA decay [RIP-Seq]

Project description:The CCR4-NOT complex is a central regulator of gene expression, orchestrating mRNA destabilization and decay through interactions with RNA-binding proteins (RBPs) and the miRNA-induced silencing complex (miRISC). However, identifying which RBP and miRNA target sites actively recruit this complex to engender mRNA turnover remains challenging, due in part to the multiple modes by which the CCR4-NOT can be recruited to targets. Here, to address this, we developed TRACER (Targeted RNA Association of CCR4-NOT and Element Recovery), a crosslinking approach that enables high-throughput mapping of cis-acting RNA elements that recruit the CCR4-NOT complex to target RNAs. TRACER analysis of a human epithelial cell line uncovers thousands of CCR4-NOT target elements, including many of which map to known and/or predicted RBP binding motifs, as well as miRNA target sites. Importantly, we show that CCR4-NOT recruitment elements identified by TRACER play important roles in promoting mRNA decay. Taken together, our approach provides the first high-resolution transcriptome-wide map of CCR4-NOT targeting elements in human cells that engender mRNA decay.

2026-04-13 | GSE302648 | GEO