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CSDE1 promotes miR-451 biogenesis.

ABSTRACT: MicroRNAs are sequentially processed by RNase III enzymes Drosha and Dicer. miR-451 is a highly conserved miRNA in vertebrates which bypasses Dicer processing and instead relies on AGO2 for its maturation. miR-451 is highly expressed in erythrocytes and regulates the differentiation of erythroblasts into mature red blood cells. However, the mechanistic details underlying miR-451 biogenesis in erythrocytes remains obscure. Here, we report that the RNA binding protein CSDE1 which is required for the development of erythroblasts into erythrocytes, controls the expression of miR-451 in erythroleukemia cells. CSDE1 binds miR-451 and regulates AGO2 processing of pre-miR-451 through its N-terminal domains. CSDE1 further interacts with PARN and promotes the trimming of intermediate miR-451 to the mature length. Together, our results demonstrate that CSDE1 promotes biogenesis of miR-451 in erythroid progenitors.

SUBMITTER: Kakumani PK

PROVIDER: S-EPMC10516617 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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CSDE1 promotes miR-451 biogenesis.

Kakumani Pavan Kumar PK Ko Yunkoo Y Ramakrishna Sushmitha S Christopher Grace G Dodgson Maria M Shrinet Jatin J Harvey Louis-Mathieu LM Shin Chanseok C Simard Martin J MJ

Nucleic acids research 20230901 17

MicroRNAs are sequentially processed by RNase III enzymes Drosha and Dicer. miR-451 is a highly conserved miRNA in vertebrates which bypasses Dicer processing and instead relies on AGO2 for its maturation. miR-451 is highly expressed in erythrocytes and regulates the differentiation of erythroblasts into mature red blood cells. However, the mechanistic details underlying miR-451 biogenesis in erythrocytes remains obscure. Here, we report that the RNA binding protein CSDE1 which is required for t ...[more]

PMID: 37493604

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