Evidence map›Paper›PMID 30820541›Full record

ArticleNucleic acids research2019

Secretion of an Argonaute protein by a parasitic nematode and the evolution of its siRNA guides.

Franklin Wang-Ngai Chow, Georgios Koutsovoulos, Cesaré Ovando-Vázquez, Kyriaki Neophytou, Jose R Bermúdez-Barrientos, Dominik R Laetsch, Elaine Robertson, Sujai Kumar, Julie M Claycomb, Mark Blaxter and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
4.3field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 99 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
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  6. Article
  7. Review
  8. Modulation of the Immune Response by Nematode Derived Molecules.International journal of molecular sciences · 2025
    Review
  9. Article
  10. The Silent Conversation: How Small RNAs Shape Plant-Microbe Relationships.International journal of molecular sciences · 2025
    Review
  11. Article
  12. Lipopolysaccharide (LPS) induces sclerostin secretion by extracellular vesicle via TLR4/miR-92a-3p/PTEN/NF-κB signalling pathway in murine macrophage.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2025
    Article
  13. Article
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  18. Article
  19. Article
  20. A natural bacterial pathogen ofbioRxiv : the preprint server for biology · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Franklin Wang-Ngai ChowInstitute of Immunology and Infection Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Georgios KoutsovoulosInstitute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Cesaré Ovando-VázquezUnidad de Genómica Avanzada (Langebio), Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Guanajuato 36824, México.
Kyriaki NeophytouInstitute of Immunology and Infection Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Jose R Bermúdez-BarrientosUnidad de Genómica Avanzada (Langebio), Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Guanajuato 36824, México.
Dominik R LaetschInstitute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Elaine RobertsonInstitute of Immunology and Infection Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Sujai KumarInstitute of Immunology and Infection Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Julie M ClaycombDepartment of Molecular Genetics, University of Toronto, Toronto, ON M5G 1M1, Canada.
Mark BlaxterInstitute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
Cei Abreu-GoodgerUnidad de Genómica Avanzada (Langebio), Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Guanajuato 36824, México.
Amy H BuckInstitute of Immunology and Infection Research, School of Biological Sciences, The University of Edinburgh, Edinburgh EH9 3JT, UK.
University of Edinburgh · GBInstituto Politécnico Nacional · MXCentre for Immunity, Infection and Evolution · GBUniversity of Toronto · CA

Funding

Wellcome Trust
6 · The paper itself

Abstract

Extracellular RNA has been proposed to mediate communication between cells and organisms however relatively little is understood regarding how specific sequences are selected for export. Here, we describe a specific Argonaute protein (exWAGO) that is secreted in extracellular vesicles (EVs) released by the gastrointestinal nematode Heligmosomoides bakeri, at multiple copies per EV. Phylogenetic and gene expression analyses demonstrate exWAGO orthologues are highly conserved and abundantly expressed in related parasites but highly diverged in free-living genus Caenorhabditis. We show that the most abundant small RNAs released from the nematode parasite are not microRNAs as previously thought, but rather secondary small interfering RNAs (siRNAs) that are produced by RNA-dependent RNA Polymerases. The siRNAs that are released in EVs have distinct evolutionary properties compared to those resident in free-living or parasitic nematodes. Immunoprecipitation of exWAGO demonstrates that it specifically associates with siRNAs from transposons and newly evolved repetitive elements that are packaged in EVs and released into the host environment. Together this work demonstrates molecular and evolutionary selectivity in the small RNA sequences that are released in EVs into the host environment and identifies a novel Argonaute protein as the mediator of this.

Indexed as

Evolution, MolecularAnimalsArgonaute ProteinsCaenorhabditis elegansHeligmosomatoideaHumansPhylogenyRNA, Small InterferingArgonaute ProteinsRNA, Small Interfering

Identifiers

PMID30820541
PMCPMC6468290
OpenAlexW2918913157

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.