Evidence map›Paper›PMID 19043551›Full record

ArticlePLoS pathogens2008

Small RNAs with 5'-polyphosphate termini associate with a Piwi-related protein and regulate gene expression in the single-celled eukaryote Entamoeba histolytica.

Hanbang Zhang, Gretchen M Ehrenkaufer, Justine M Pompey, Jason A Hackney, Upinder Singh

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

44 citing papers in PubMed, 70 citations in OpenAlex.

  1. Review
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  13. The NADFrontiers in cellular and infection microbiology · 2020
    Article
  14. Article
  15. Life and Death of mRNA Molecules inFrontiers in cellular and infection microbiology · 2018
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Recent advances inF1000Research · 2016
    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

5 authors at 1 institution in 1 country.

Hanbang ZhangDivision of Infectious Diseases, Department of Internal Medicine, Stanford University School of Medicine, Stanford, California, USA.
Gretchen M Ehrenkaufer
Justine M Pompey
Jason A Hackney
Upinder Singh
Stanford University · US

Funding

MOLECULAR BASIS OF HOST-PARASITE INTERACTIONT32AI007328 · NIAID · STANFORD UNIVERSITY · PI JUSTIN L SONNENBURG · 1987 to 2026
$11.9M
Proteomics/GenomicsP30DK056339 · NIDDK · STANFORD UNIVERSITY · PI GREENBERG, HARRY BERNARD · 2001 to 2010
$10.4M
Investigating Entamoeba histolytica Colonic PathogenesisR01AI053724 · NIAID · STANFORD UNIVERSITY · PI SINGH, UPINDER · 2003 to 2012
$3.8M
Identification of Transcriptional Regulatory Networks in Entamoeba HistolyticaR21AI069382 · NIAID · STANFORD UNIVERSITY · PI SINGH, UPINDER · 2007 to 2008
$431k
Developing Tools to Study Encystation in Entamoeba HistolyticaR21AI068899 · NIAID · STANFORD UNIVERSITY · PI SINGH, UPINDER · 2006 to 2007
$423k
NIAID NIH HHS AI-053724NIAID NIH HHS AI-068899NIAID NIH HHS AI-069382NIAID NIH HHS R01 AI053724NIAID NIH HHS R21 AI068899NIAID NIH HHS R21 AI069382NIAID NIH HHS T32 AI007328NIAID NIH HHS T32-AI07328NIDDK NIH HHS P30 DK056339NIDDK NIH HHS P30 DK56339
6 · The paper itself

Abstract

Small interfering RNAs regulate gene expression in diverse biological processes, including heterochromatin formation and DNA elimination, developmental regulation, and cell differentiation. In the single-celled eukaryote Entamoeba histolytica, we have identified a population of small RNAs of 27 nt size that (i) have 5'-polyphosphate termini, (ii) map antisense to genes, and (iii) associate with an E. histolytica Piwi-related protein. Whole genome microarray expression analysis revealed that essentially all genes to which antisense small RNAs map were not expressed under trophozoite conditions, the parasite stage from which the small RNAs were cloned. However, a number of these genes were expressed in other E. histolytica strains with an inverse correlation between small RNA and gene expression level, suggesting that these small RNAs mediate silencing of the cognate gene. Overall, our results demonstrate that E. histolytica has an abundant 27 nt small RNA population, with features similar to secondary siRNAs from C. elegans, and which appear to regulate gene expression. These data indicate that a silencing pathway mediated by 5'-polyphosphate siRNAs extends to single-celled eukaryotic organisms.

Indexed as

Gene Expression RegulationPolyphosphatesAnimalsEntamoeba histolyticaGene SilencingGenomicsRNA-Binding ProteinsRNA, Small InterferingPolyphosphatesRNA-Binding ProteinsRNA, Small Interfering

Identifiers

PMID19043551
PMCPMC2582682
OpenAlexW2010423470

What OpenQuestion holds

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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.