Cited by 340RNA Research and SplicingRNA Interference and Gene DeliveryCancer-related molecular mechanisms research

Control of alternative splicing through siRNA-mediated transcriptional gene silencing

Alló, Mariano, Buggiano, Valeria, Fededa, Juan P, Petrillo, Ezequiel, Schor, Ignacio, de la Mata, Manuel, Agirre, Eneritz, Plass, Mireya +5 more·2009·Nature Structural & Molecular Biology

Abstract

When targeting promoter regions, small interfering RNAs (siRNAs) trigger a previously proposed pathway known as transcriptional gene silencing by promoting heterochromatin formation. Here we show that siRNAs targeting intronic or exonic sequences close to an alternative exon regulate the splicing of that exon. The effect occurred in hepatoma and HeLa cells with siRNA antisense strands designed to enter the silencing pathway, suggesting hybridization with nascent pre-mRNA. Unexpectedly, in HeLa cells the sense strands were also effective, suggesting that an endogenous antisense transcript, detectable in HeLa but not in hepatoma cells, acts as a target. The effect depends on Argonaute-1 and is counterbalanced by factors favoring chromatin opening or transcriptional elongation. The increase in heterochromatin marks (dimethylation at Lys9 and trimethylation at Lys27 of histone H3) at the target site, the need for the heterochromatin-associated protein HP1alpha and the reduction in RNA polymerase II processivity suggest a mechanism involving the kinetic coupling of transcription and alternative splicing.

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Crossref · 10.1038/nsmb.1620

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  • HP1α recruitment to local H3K9me2 enrichment induced by siRNA targeting correlates with a change in the ratio of distal versus proximal pre-mRNA levels suggesting a decreased local RNA Pol II speed.

    “Similarly, HP1α recruitment to local H3K9me2 enrichment induced by siRNA targeting correlates with a change in the ratio of distal versus proximal pre‐mRNA levels suggesting a decreased local RNA Pol II speed (Alló et al, 2009).”

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Authors
Alló, M., Buggiano, V., Fededa, J. P., Petrillo, E., Schor, I., de la Mata, M., Agirre, E., Plass, M., Eyras, E., Elela, S. A., Klinck, R., Chabot, B., & Kornblihtt, A. R.
Affiliations
  • Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
  • Institució Catalana de Recerca i Estudis Avançats (ES)
  • Université de Sherbrooke (CA)
Corresponding author
Kornblihtt, Alberto R
Venue
Nature Structural & Molecular Biology
Published
2009-06-21
Volume
16
Issue
7
Pages
717-724
ISSN
  • 1545-9985 (ISSN-L)
  • 1545-9993
OpenAlex
W1992332038
Cited by
340
References
47
Citations by year
2026: 4 · 2025: 12 · 2024: 8 · 2023: 15 · 2022: 17 · 2021: 12 · 2020: 11 · 2019: 18 · 2018: 8 · 2017: 21 · 2016: 21 · 2015: 34 · 2014: 31 · 2013: 37 · 2012: 30
FWCI
12.16
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Structural & Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
Keywords
alternative splicing, siRNA, transcriptional silencing, heterochromatin, AGO1, HP1α, histone H3 lysine methylation, RNA polymerase II processivity, hepatoma cells, HeLa cells
MeSH terms
Chromobox Protein Homolog 5, Animals, Base Sequence, Exons, Fibronectins, HeLa Cells, Carcinoma, Hepatocellular, Heterochromatin, Histones, Humans, Liver Neoplasms, Lysine, Male, Methylation, Promoter Regions, Genetic, RNA Polymerase II, Transcription, Genetic, Oligonucleotides, Antisense, Alternative Splicing, RNA Interference, RNA, Small Interfering, Eukaryotic Initiation Factors, Ribonuclease III, Epigenesis, Genetic, Mice, Gene Knockdown Techniques, Argonaute Proteins

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