Evidence map›Paper›PMID 26684303›Full record

ArticlePLoS pathogens2015

A Trichomonas vaginalis Rhomboid Protease and Its Substrate Modulate Parasite Attachment and Cytolysis of Host Cells.

Angelica M Riestra, Shiv Gandhi, Michael J Sweredoski, Annie Moradian, Sonja Hess, Sinisa Urban, Patricia J Johnson

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

36 citing papers in PubMed, 73 citations in OpenAlex.

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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

7 authors at 4 institutions in 1 country.

Angelica M RiestraDepartment of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
Shiv GandhiDepartment of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America.
Michael J SweredoskiProteome Exploration Laboratory, Division of Biology and Biological Engineering, Beckman Institute, California Institute of Technology, Pasadena, California, United States of America.
Annie MoradianProteome Exploration Laboratory, Division of Biology and Biological Engineering, Beckman Institute, California Institute of Technology, Pasadena, California, United States of America.
Sonja HessProteome Exploration Laboratory, Division of Biology and Biological Engineering, Beckman Institute, California Institute of Technology, Pasadena, California, United States of America.
Sinisa UrbanDepartment of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America.
Patricia J JohnsonDepartment of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
California Institute of Technology · USUniversity of California, Los Angeles · USJohns Hopkins Medicine · USJohns Hopkins University · US

Funding

UCSD/SDSU IRACDAK12GM068524 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TREJO, JOANN · 2003 to 2025
$24.4M
BIOCHEMISTRY, CELLULAR AND MOLECULAR BIOLOGY PROGRAMT32GM007445 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI GREEN, RACHEL · 1985 to 2021
$24.1M
Biochemistry of Intramembrane Proteases From PathogensR01AI066025 · NIAID · JOHNS HOPKINS UNIVERSITY · PI NATHANS, JEREMY · 2005 to 2019
$4.9M
Trichomonas vaginalis exosomes: Mediators of host:pathogen interactionsR01AI103182 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI JOHNSON, PATRICIA JEAN · 2013 to 2017
$2.9M
NIAID NIH HHS AI066025NIAID NIH HHS AI103182NIAID NIH HHS R01 AI066025NIAID NIH HHS R01 AI103182NIGMS NIH HHS K12 GM068524NIGMS NIH HHS T32 GM007445NIGMS NIH HHS T32GM007445
6 · The paper itself

Abstract

Trichomonas vaginalis is an extracellular eukaryotic parasite that causes the most common, non-viral sexually transmitted infection worldwide. Although disease burden is high, molecular mechanisms underlying T. vaginalis pathogenesis are poorly understood. Here, we identify a family of putative T. vaginalis rhomboid proteases and demonstrate catalytic activity for two, TvROM1 and TvROM3, using a heterologous cell cleavage assay. The two T. vaginalis intramembrane serine proteases display different subcellular localization and substrate specificities. TvROM1 is a cell surface membrane protein and cleaves atypical model rhomboid protease substrates, whereas TvROM3 appears to localize to the Golgi apparatus and recognizes a typical model substrate. To identify TvROM substrates, we interrogated the T. vaginalis surface proteome using both quantitative proteomic and bioinformatic approaches. Of the nine candidates identified, TVAG_166850 and TVAG_280090 were shown to be cleaved by TvROM1. Comparison of amino acid residues surrounding the predicted cleavage sites of TvROM1 substrates revealed a preference for small amino acids in the predicted transmembrane domain. Over-expression of TvROM1 increased attachment to and cytolysis of host ectocervical cells. Similarly, mutations that block the cleavage of a TvROM1 substrate lead to its accumulation on the cell surface and increased parasite adherence to host cells. Together, these data indicate a role for TvROM1 and its substrate(s) in modulating attachment to and lysis of host cells, which are key processes in T. vaginalis pathogenesis.

Indexed as

FemaleFlow CytometryFluorescent Antibody Technique, IndirectHEK293 CellsHost-Parasite InteractionsHumansMutagenesis, Site-DirectedPeptide HydrolasesProtozoan ProteinsTrichomonas vaginalisTrichomonas VaginitisPeptide HydrolasesProtozoan Proteins

Identifiers

PMID26684303
PMCPMC4684317
OpenAlexW2205614030

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.