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Cited by 508

The DOI matches its Crossref record; 59 of the 59 references it cites were found in a registry or an index.

Piwi induces piRNA-guided transcriptional silencing and establishment of a repressive chromatin state

Open access
Le Thomas, Adrien, Rogers, Alicia K., Webster, Alexandre, Marinov, Georgi K., Liao, Susan E., Perkins, Edward M., Hur, Junho K., Aravin, Alexei A., Tóth, Katalin Fejes·2013·Genes & Development

Abstract

In the metazoan germline, piwi proteins and associated piwi-interacting RNAs (piRNAs) provide a defense system against the expression of transposable elements. In the cytoplasm, piRNA sequences guide piwi complexes to destroy complementary transposon transcripts by endonucleolytic cleavage. However, some piwi family members are nuclear, raising the possibility of alternative pathways for piRNA-mediated regulation of gene expression. We found that Drosophila Piwi is recruited to chromatin, colocalizing with RNA polymerase II (Pol II) on polytene chromosomes. Knockdown of Piwi in the germline increases expression of transposable elements that are targeted by piRNAs, whereas protein-coding genes remain largely unaffected. Derepression of transposons upon Piwi depletion correlates with increased occupancy of Pol II on their promoters. Expression of piRNAs that target a reporter construct results in a decrease in Pol II occupancy and an increase in repressive H3K9me3 marks and heterochromatin protein 1 (HP1) on the reporter locus. Our results indicate that Piwi identifies targets complementary to the associated piRNA and induces transcriptional repression by establishing a repressive chromatin state when correct targets are found.

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Metadata

Authors
Le Thomas, A., Rogers, A. K., Webster, A., Marinov, G. K., Liao, S. E., Perkins, E. M., Hur, J. K., Aravin, A. A., & Tóth, K. F.
Venue
Genes & Development
Published
2013-02-07
Volume
27
Issue
4
Pages
390-399
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2125155400
Cited by
508
References
59
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: Piwi induces piRNA-guided transcriptional silencing and establishment of a repressive chromatin state. https://app.cochat.ai/papers/10.1101/gad.209841.112
The paper
Le Thomas, A., Rogers, A. K., Webster, A., Marinov, G. K., Liao, S. E., Perkins, E. M., Hur, J. K., Aravin, A. A., & Tóth, K. F. (2013). Piwi induces piRNA-guided transcriptional silencing and establishment of a repressive chromatin state. Genes & Development. https://doi.org/10.1101/gad.209841.112

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