Evidence map›Paper›PMID 29408891›Full record

ArticlePLoS biology2018

Neutrophils kill the parasite Trichomonas vaginalis using trogocytosis.

Frances Mercer, Shek Hang Ng, Taylor M Brown, Grace Boatman, Patricia J Johnson

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
4.1field-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

67 citing papers in PubMed, 91 citations in OpenAlex.

  1. Review
  2. Article
  3. Immune surveillance interrupted: how cancer exploits trogocytosis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
  4. Trogocytosis in cancer immunity and cellular immunotherapy: mechanisms, therapeutic challenges, and translational opportunities.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
  5. Cannonballs inPathogens (Basel, Switzerland) · 2026
    Article
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7 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Frances MercerDepartment of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
Shek Hang NgDepartment of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
Taylor M BrownDepartment of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
Grace BoatmanPomona College, Claremont, California, United States of America.
Patricia J JohnsonDepartment of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America.
University of California, Los Angeles · USPomona College · US

Funding

Trichomonas vaginalis MIF: a role in prostate cancer and infertility?R21AI105779 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI JOHNSON, PATRICIA JEAN · 2013 to 2014
$410k
NIAID NIH HHS R21 AI105779
6 · The paper itself

Abstract

T. vaginalis, a human-infective parasite, causes the most common nonviral sexually transmitted infection (STI) worldwide and contributes to adverse inflammatory disorders. The immune response to T. vaginalis is poorly understood. Neutrophils (polymorphonuclear cells [PMNs]) are the major immune cell present at the T. vaginalis-host interface and are thought to clear T. vaginalis. However, the mechanism of PMN clearance of T. vaginalis has not been characterized. We demonstrate that human PMNs rapidly kill T. vaginalis in a dose-dependent, contact-dependent, and neutrophil extracellular trap (NET)-independent manner. In contrast to phagocytosis, we observed that PMN killing of T. vaginalis involves taking "bites" of T. vaginalis prior to parasite death, using trogocytosis to achieve pathogen killing. Both trogocytosis and parasite killing are dependent on the presence of PMN serine proteases and human serum factors. Our analyses provide the first demonstration, to our knowledge, of a mammalian phagocyte using trogocytosis for pathogen clearance and reveal a novel mechanism used by PMNs to kill a large, highly motile target.

Indexed as

PhagocytosisAnimalsBloodDose-Response Relationship, ImmunologicExtracellular TrapsHost Microbial InteractionsHumansNeutrophilsSerine ProteasesTrichomonas vaginalisSerine Proteases

Identifiers

PMID29408891
PMCPMC5815619
OpenAlexW2785539835

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.