ArticlePloS one2009
Use of bacterially expressed dsRNA to downregulate Entamoeba histolytica gene expression.
Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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.
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.
Who cites it
35 citing papers in PubMed, 72 citations in OpenAlex.
- EhVps29 Has a Role in the Location of the Retromer Complex and the Function of Key Virulence Factors inMicroorganisms · 2026Article
- Work with me here: variations in genome content and emerging genetic tools in Entamoeba histolytica.Trends in parasitology · 2025Review
- EhVps35, a retromer component, is a key factor in secretion, motility, and tissue invasion byFrontiers in cellular and infection microbiology · 2024Article
- The Entamoeba histolytica Vps26 (EhVps26) retromeric protein is involved in phagocytosis: Bioinformatic and experimental approaches.PloS one · 2024Article
- EhVps35, a retromer component, is involved in the recycling of the EhADH and Gal/GalNac virulent proteins ofFrontiers in parasitology · 2024Article
- An Optimized/Scale Up-Ready Protocol for Extraction of Bacterially Produced dsRNA at Good Yield and Low Costs.International journal of molecular sciences · 2023Article
- Are Metabolites From the Gut Microbiota Capable of Regulating Epigenetic Mechanisms in the Human ParasiteFrontiers in cell and developmental biology · 2022Review
- EhVps23, an ESCRT-I Member, Is a Key Factor in Secretion, Motility, Phagocytosis and Tissue Invasion byFrontiers in cellular and infection microbiology · 2022Article
- Establishment of quantitative RNAi-based forward genetics in Entamoeba histolytica and identification of genes required for growth.PLoS pathogens · 2021Article
- Interference Efficiency and Effects of Bacterium-mediated RNAi in the Fall Armyworm (Lepidoptera: Noctuidae).Journal of insect science (Online) · 2021Article
- Article
- Protein Sumoylation Is Crucial for Phagocytosis inInternational journal of molecular sciences · 2021Article
- EhVps23: A Component of ESCRT-I That Participates in Vesicular Trafficking and Phagocytosis ofFrontiers in cellular and infection microbiology · 2021Article
- Article
- Molecular characterization of RNase III protein of Asaia sp. for developing a robust RNAi-based paratransgensis tool to affect the sexual life-cycle of Plasmodium or Anopheles fitness.Parasites & vectors · 2020Article
- Identification and validation of potential reference gene for effective dsRNA knockdown analysis in Chilo partellus.Scientific reports · 2019Article
- Microbial-Based Double-Stranded RNA Production to Develop Cost-Effective RNA Interference Application for Insect Pest Management.International journal of insect science · 2019Article
- Double-stranded RNA production and the kinetics of recombinantBiotechnology reports (Amsterdam, Netherlands) · 2018Article
- Targeting the polyadenylation factor EhCFIm25 with RNA aptamers controls survival in Entamoeba histolytica.Scientific reports · 2018Article
- Non-vesicular Lipid Transport Machinery inFrontiers in cellular and infection microbiology · 2018Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundModern RNA interference (RNAi) methodologies using small interfering RNA (siRNA) oligonucleotide duplexes or episomally synthesized hairpin RNA are valuable tools for the analysis of gene function in the protozoan parasite Entamoeba histolytica. However, these approaches still require time-consuming procedures including transfection and drug selection, or costly synthetic molecules. PRINCIPAL
findingsHere we report an efficient and handy alternative for E. histolytica gene down-regulation mediated by bacterial double-stranded RNA (dsRNA) targeting parasite genes. The Escherichia coli strain HT115 which is unable to degrade dsRNA, was genetically engineered to produce high quantities of long dsRNA segments targeting the genes that encode E. histolytica beta-tubulin and virulence factor KERP1. Trophozoites cultured in vitro were directly fed with dsRNA-expressing bacteria or soaked with purified dsRNA. Both dsRNA delivery methods resulted in significant reduction of protein expression. In vitro host cell-parasite assays showed that efficient downregulation of kerp1 gene expression mediated by bacterial dsRNA resulted in significant reduction of parasite adhesion and lytic capabilities, thus supporting a major role for KERP1 in the pathogenic process. Furthermore, treatment of trophozoites cultured in microtiter plates, with a repertoire of eighty-five distinct bacterial dsRNA segments targeting E. histolytica genes with unknown function, led to the identification of three genes potentially involved in the growth of the parasite.
conclusionsOur results showed that the use of bacterial dsRNA is a powerful method for the study of gene function in E. histolytica. This dsRNA delivery method is also technically suitable for the study of a large number of genes, thus opening interesting perspectives for the identification of novel drug and vaccine targets.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.