Evidence map›Paper›PMID 22438534›Full record

ArticleJournal of virology2012

Targeting of dicer-2 and RNA by a viral RNA silencing suppressor in Drosophila cells.

Nan Qi, Lei Zhang, Yang Qiu, Zhaowei Wang, Jie Si, Yongxiang Liu, Xue Xiang, Jiazheng Xie, Cheng-Feng Qin, Xi Zhou and 1 more

Abstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–field-weighted citation impact
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

30 citing papers in PubMed.

  1. Review
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  9. Article
  10. Article
  11. Review
  12. Review
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  14. The evolving world of small RNAs from RNA viruses.Wiley interdisciplinary reviews. RNA · 2016
    Review
  15. Article
  16. Article
  17. RNA interference-mediated antiviral defense in insects.Current opinion in insect science · 2015
    Article
  18. Review
  19. Article
  20. Review
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

11 authors.

Nan QiState Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China.
Lei Zhang
Yang Qiu
Zhaowei Wang
Jie Si
Yongxiang Liu
Xue Xiang
Jiazheng Xie
Cheng-Feng Qin
Xi Zhou
Yuanyang Hu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

RNA interference (RNAi) is a eukaryotic gene-silencing mechanism that functions in antiviral immunity in diverse organisms. To combat RNAi-mediated immunity, viruses encode viral suppressors of RNA silencing (VSRs) that target RNA and protein components in the RNAi machinery. Although the endonuclease Dicer plays key roles in RNAi immunity, little is known about how VSRs target Dicer. Here, we show that the B2 protein from Wuhan nodavirus (WhNV), the counterpart of Flock House virus (FHV), suppresses Drosophila melanogaster RNAi by directly interacting with Dicer-2 (Dcr-2) and sequestering double-stranded RNA (dsRNA) and small interfering RNA (siRNA). Further investigations reveal that WhNV B2 binds to the RNase III and Piwi-Argonaut-Zwille (PAZ) domains of Dcr-2 via its C-terminal region, thereby blocking the activities of Dcr-2 in processing dsRNA and incorporating siRNA into the RNA-induced silencing complex (RISC). Moreover, we uncover an interrelationship among diverse activities of WhNV B2, showing that RNA binding enhances the B2-Dcr-2 interaction by promoting B2 homodimerization. Taken together, our findings establish a model of suppression of Drosophila RNAi by WhNV B2 targeting both Dcr-2 and RNA and provide evidence that an interrelationship exists among diverse activities of VSRs to antagonize RNAi.

Indexed as

RNA InterferenceAnimalsCell LineDrosophilaDrosophila ProteinsNodaviridaeProtein BindingRibonuclease IIIRNA HelicasesRNA, Small InterferingViral ProteinsDCR-2 protein, DrosophilaDrosophila ProteinsRibonuclease IIIRNA HelicasesRNA, Small InterferingViral Proteins

Identifiers

PMID22438534
PMCPMC3347268

What OpenQuestion holds

Textmetadata
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.