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Cited by 705

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MicroRNA-directed transcriptional gene silencing in mammalian cells

Open access
Kim, Daniel H., Sætrom, Pål, Snøve, Ola, Rossi, John J.·2008·Proceedings of the National Academy of Sciences

Abstract

MicroRNAs (miRNAs) regulate gene expression at the posttranscriptional level in the cytoplasm, but recent findings suggest additional roles for miRNAs in the nucleus. To address whether miRNAs might transcriptionally silence gene expression, we searched for miRNA target sites proximal to known gene transcription start sites in the human genome. One conserved miRNA, miR-320, is encoded within the promoter region of the cell cycle gene POLR3D in the antisense orientation. We provide evidence of a cis -regulatory role for miR-320 in transcriptional silencing of POLR3D expression. miR-320 directs the association of RNA interference (RNAi) protein Argonaute-1 (AGO1), Polycomb group (PcG) component EZH2, and tri-methyl histone H3 lysine 27 (H3K27me3) with the POLR3D promoter. Our results suggest the existence of an epigenetic mechanism of miRNA-directed transcriptional gene silencing (TGS) in mammalian cells.

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Metadata

Authors
Kim, D. H., Sætrom, P., Snøve, O., & Rossi, J. J.
Venue
Proceedings of the National Academy of Sciences
Published
2008-10-21
Volume
105
Issue
42
Pages
16230-16235
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1985098845
Cited by
705
References
2
FWCI
17.99
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: MicroRNA-directed transcriptional gene silencing in mammalian cells. https://app.cochat.ai/papers/10.1073/pnas.0808830105
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Kim, D. H., Sætrom, P., Snøve, O., & Rossi, J. J. (2008). MicroRNA-directed transcriptional gene silencing in mammalian cells. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0808830105

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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