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Dissecting long non-coding RNAs derived from microRNA genes in hematopoiesis (scRNA sequencing)

ABSTRACT: Albeit majority of eukaryotic genome can be pervasively transcribed to a diverse population of lncRNAs and various subtypes of lncRNA have been discovered. However, the genome-wide study of miRNA-derived lncRNAs is still lacking. Here, we report that over 800 miRNA gene-originated lncRNAs (molncRNAs) generated from miRNA loci. One of them, molnc-301b from miR-301b and miR-130b, functions as an "RNA decoy" to facilitate dissociation of the chromatin remodeling protein SMARCA5 from chromatin and thereby sequester transcription and mRNA translation. Specifically, molnc-301b attenuates erythropoiesis via mitigating the transcription of erythropoietic and translation-associated genes, such as GATA1 and FOS. In addition, we have established a useful and powerful CRISPR screen platform to characterize the biological functions of molncRNAs at large-scale and single-cell level, and identified 26 functional molncRNAs in hematopoietic cells. Collectively, we focused on miRNA-derived lncRNAs, deciphered their landscape during normal hematopoiesis, and comprehensively evaluated their potential roles.

ORGANISM(S): synthetic construct Homo sapiens

PROVIDER: GSE181338 | GEO | 2023/10/18

REPOSITORIES: GEO

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