Feeding exogenous dsRNA interferes with endogenous sRNA accumulation in Paramecium.


Journal

DNA research : an international journal for rapid publication of reports on genes and genomes
ISSN: 1756-1663
Titre abrégé: DNA Res
Pays: England
ID NLM: 9423827

Informations de publication

Date de publication:
01 Feb 2020
Historique:
received: 30 08 2019
accepted: 21 04 2020
pubmed: 28 4 2020
medline: 12 3 2021
entrez: 28 4 2020
Statut: ppublish

Résumé

Supply of exogenous dsRNA (exo-dsRNA), either by injection or by feeding, is a fast and powerful alternative to classical knockout studies. The biotechnical potential of feeding techniques is evident from the numerous studies focusing on oral administration of dsRNA to control pests and viral infection in crops/animal farming. We aimed to dissect the direct and indirect effects of exo-dsRNA feeding on the endogenous short interfering RNA (endo-siRNA) populations of the free-living ciliate Paramecium. We introduced dsRNA fragments against Dicer1 (DCR1), involved in RNA interference (RNAi) against exo- and few endo-siRNAs, and an RNAi unrelated gene, ND169. Any feeding, even the control dsRNA, diminishes genome wide the accumulation of endo-siRNAs and mRNAs. This cannot be explained by direct off-target effects and suggests mechanistic overlaps of the exo- and endo-RNAi mechanisms. Nevertheless, we observe a stronger down-regulation of mRNAs in DCR1 feeding compared with ND169 knockdown. This is likely due to the direct involvement of DCR1 in endo-siRNA accumulation. We further observed a cis-regulatory effect on mRNAs that overlap with phased endo-siRNAs. This interference of exo-dsRNA with endo-siRNAs warrants further investigations into secondary effects in target species/consumers, risk assessment of dsRNA feeding applications, and environmental pollution with dsRNA.

Identifiants

pubmed: 32339224
pii: 5825730
doi: 10.1093/dnares/dsaa005
pmc: PMC7315353
pii:
doi:

Substances chimiques

RNA, Double-Stranded 0
RNA, Messenger 0
RNA, Small Interfering 0
Ribonuclease III EC 3.1.26.3

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Informations de copyright

© The Author(s) 2020. Published by Oxford University Press on behalf of Kazusa DNA Research Institute.

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Auteurs

Sivarajan Karunanithi (S)

Cluster of Excellence for Multimodal Computing and Interaction, and Department for Computational Biology & Applied Algorithms, Max Planck Institute for Informatics, Saarland Informatics Campus, Saarbrücken, Germany.
Graduate School of Computer Science, Saarland Informatics Campus, Saarland University, Saarbrücken, Germany.
Institute for Cardiovascular Regeneration, Goethe University Hospital, Frankfurt am Main, Germany.

Vidya Oruganti (V)

Cluster of Excellence for Multimodal Computing and Interaction, and Department for Computational Biology & Applied Algorithms, Max Planck Institute for Informatics, Saarland Informatics Campus, Saarbrücken, Germany.

Raphael de Wijn (R)

Molecular Cell Dynamics, Centre for Human and Molecular Biology, Saarland University, Saarbrücken, Germany.

Franziska Drews (F)

Molecular Cell Biology and Microbiology, Wuppertal University, Wuppertal, Germany.

Miriam Cheaib (M)

Molecular Cell Dynamics, Centre for Human and Molecular Biology, Saarland University, Saarbrücken, Germany.

Karl Nordström (K)

Genetics/Epigenetics, Centre for Human and Molecular Biology, Saarland University, Saarbrücken, Germany.

Martin Simon (M)

Molecular Cell Dynamics, Centre for Human and Molecular Biology, Saarland University, Saarbrücken, Germany.
Molecular Cell Biology and Microbiology, Wuppertal University, Wuppertal, Germany.

Marcel H Schulz (MH)

Cluster of Excellence for Multimodal Computing and Interaction, and Department for Computational Biology & Applied Algorithms, Max Planck Institute for Informatics, Saarland Informatics Campus, Saarbrücken, Germany.
Institute for Cardiovascular Regeneration, Goethe University Hospital, Frankfurt am Main, Germany.

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Classifications MeSH