Evidence map›Paper›PMID 25474106›Full record

ArticlePLoS genetics2014

Formation of linear amplicons with inverted duplications in Leishmania requires the MRE11 nuclease.

Marie-Claude N Laffitte, Marie-Michelle Genois, Angana Mukherjee, Danielle Légaré, Jean-Yves Masson, Marc Ouellette

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

16 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
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  8. DNA Double-Strand Breaks: A Double-Edged Sword for Trypanosomatids.Frontiers in cell and developmental biology · 2021
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  15. Plasticity of theF1000Research · 2016
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  16. 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

6 authors at 2 institutions in 1 country.

Marie-Claude N LaffitteCentre de Recherche en Infectiologie du CHU de Québec, Quebec City, Québec, Canada.
Marie-Michelle GenoisCentre de Recherche en Infectiologie du CHU de Québec, Quebec City, Québec, Canada; Genome Stability Laboratory, CHU de Quebec Research Center, HDQ Pavillon, Oncology Axis, Quebec City, Québec, Canada; Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University, Quebec City, Québec, Canada.
Angana MukherjeeCentre de Recherche en Infectiologie du CHU de Québec, Quebec City, Québec, Canada.
Danielle LégaréCentre de Recherche en Infectiologie du CHU de Québec, Quebec City, Québec, Canada.
Jean-Yves MassonGenome Stability Laboratory, CHU de Quebec Research Center, HDQ Pavillon, Oncology Axis, Quebec City, Québec, Canada; Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University, Quebec City, Québec, Canada.
Marc OuelletteCentre de Recherche en Infectiologie du CHU de Québec, Quebec City, Québec, Canada.
Centre hospitalier universitaire de Québec · CAUniversité Laval · CA

Funding

Canadian Institutes of Health Research 15501Canadian Institutes of Health Research MOP-102722
6 · The paper itself

Abstract

Extrachromosomal DNA amplification is frequent in the protozoan parasite Leishmania selected for drug resistance. The extrachromosomal amplified DNA is either circular or linear, and is formed at the level of direct or inverted homologous repeated sequences that abound in the Leishmania genome. The RAD51 recombinase plays an important role in circular amplicons formation, but the mechanism by which linear amplicons are formed is unknown. We hypothesized that the Leishmania infantum DNA repair protein MRE11 is required for linear amplicons following rearrangements at the level of inverted repeats. The purified LiMRE11 protein showed both DNA binding and exonuclease activities. Inactivation of the LiMRE11 gene led to parasites with enhanced sensitivity to DNA damaging agents. The MRE11(-/-) parasites had a reduced capacity to form linear amplicons after drug selection, and the reintroduction of an MRE11 allele led to parasites regaining their capacity to generate linear amplicons, but only when MRE11 had an active nuclease activity. These results highlight a novel MRE11-dependent pathway used by Leishmania to amplify portions of its genome to respond to a changing environment.

Indexed as

Gene AmplificationGene DuplicationSequence InversionAnimalsCells, CulturedDNA Repair EnzymesEndonucleasesGene-Environment InteractionGenes, ProtozoanHumansLeishmania infantumMutagenesisOrganisms, Genetically ModifiedRepetitive Sequences, Nucleic AcidSf9 CellsSpodopteraDNA Repair EnzymesEndonucleases

Identifiers

PMID25474106
PMCPMC4256157
OpenAlexW2048971632

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.