Evidence map›Paper›PMID 27191844›Full record

ArticlePLoS pathogens2016

Cysteine Peptidase B Regulates Leishmania mexicana Virulence through the Modulation of GP63 Expression.

Pierre-André Casgrain, Caroline Martel, W Robert McMaster, Jeremy C Mottram, Martin Olivier, Albert Descoteaux

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
6.7field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 54 citations in OpenAlex.

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  12. Three types ofFrontiers in cellular and infection microbiology · 2022
    Article
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  19. Virulence factor RNA transcript expression in theTropical medicine and health · 2019
    Article
  20. Frontiers in cellular and infection microbiology · 2019
    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 4 institutions in 2 countries.

Pierre-André CasgrainINRS- Institut Armand-Frappier and the Center for Host-Parasite Interactions, Laval, Canada.
Caroline MartelThe Research Institute of the McGill University Health Centre, Montréal, Canada.
W Robert McMasterImmunity and Infection Research Centre, Vancouver Coastal Health Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, Canada.
Jeremy C MottramCentre for Immunology and Infection, Department of Biology, University of York, Wentworth Way Heslington, York, United Kingdom.
Martin OlivierThe Research Institute of the McGill University Health Centre, Montréal, Canada.
Albert DescoteauxINRS- Institut Armand-Frappier and the Center for Host-Parasite Interactions, Laval, Canada.
Institut National de la Recherche Scientifique · CAMcGill University Health Centre · CAUniversity of York · GBVancouver Coastal Health · CA

Funding

CIHR MOP-125990CIHR MOP-12671Medical Research Council MR/K019384/1Medical Research Council MR/K019384/2Wellcome TrustWellcome Trust 104111
6 · The paper itself

Abstract

Cysteine peptidases play a central role in the biology of Leishmania. In this work, we sought to further elucidate the mechanism(s) by which the cysteine peptidase CPB contributes to L. mexicana virulence and whether CPB participates in the formation of large communal parasitophorous vacuoles induced by these parasites. We initially examined the impact of L. mexicana infection on the trafficking of VAMP3 and VAMP8, two endocytic SNARE proteins associated with phagolysosome biogenesis and function. Using a CPB-deficient mutant, we found that both VAMP3 and VAMP8 were down-modulated in a CPB-dependent manner. We also discovered that expression of the virulence-associated GPI-anchored metalloprotease GP63 was inhibited in the absence of CPB. Expression of GP63 in the CPB-deficient mutant was sufficient to down-modulate VAMP3 and VAMP8. Similarly, episomal expression of GP63 enabled the CPB-deficient mutant to establish infection in macrophages, induce the formation of large communal parasitophorous vacuoles, and cause lesions in mice. These findings implicate CPB in the regulation of GP63 expression and provide evidence that both GP63 and CPB are key virulence factors in L. mexicana.

Indexed as

AnimalsBlotting, WesternCysteineDisease Models, AnimalFlow CytometryGene Expression RegulationLeishmania mexicanaLeishmaniasis, CutaneousMetalloendopeptidasesMiceMice, Inbred BALB CMicroscopy, ConfocalPeptide HydrolasesProtozoan ProteinsReverse Transcriptase Polymerase Chain ReactionVirulenceCysteineglycoprotein gp63, LeishmaniaMetalloendopeptidasesPeptide HydrolasesProtozoan ProteinsVirulence Factors

Identifiers

PMID27191844
PMCPMC4871588
OpenAlexW2408708496

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.