Evidence map›Paper›PMID 23753625›Full record

ArticleInfection and immunity2013

Perforin-2 restricts growth of Chlamydia trachomatis in macrophages.

K A Fields, R McCormack, L R de Armas, E R Podack

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

33 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Review
  3. Perforin-2 is overexpressed in Kikuchi-Fujimoto disease.Virchows Archiv : an international journal of pathology · 2025
    Article
  4. The evolutionary diversification and antimicrobial potential of MPEG1 in Metazoa.Computational and structural biotechnology journal · 2023
    Article
  5. Giant Triton SnailInternational journal of molecular sciences · 2022
    Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. An Ancient Molecular Arms Race:Frontiers in immunology · 2020
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

4 authors at 1 institution in 1 country.

K A FieldsDepartment of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, Florida, USA. Kfields@med.miami.edu
R McCormack
L R de Armas
E R Podack
University of Miami · US

Funding

REGULATION OF ANTI-TUMOR IMMUNITYP01CA109094 · NCI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CRAY, CAROLYN · 2007 to 2011
$6.2M
Type III exported effectors of Chlamydia trachomatisR01AI065530 · NIAID · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI FIELDS, KENNETH A · 2005 to 2021
$5.7M
MOLECULAR MECHANMISM OF LYMPHOCYTE MEDIATED TUMOR LYSISR01CA039201 · NCI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI PODACK, ECKHARD R · 1985 to 2009
$2.3M
Response to and protection by gp96SIVIg/TNFSF13 and gp96SIVIg/TNFSF15 vaccinesP01AI096396 · NIAID · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI PODACK, ECKHARD R · 2011 to 2011
$2.0M
Induction of mucosal SIV immunity in non human primates by secreted Hsp-Gp96R33AI073234 · NIAID · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI PODACK, ECKHARD R · 2009 to 2011
$1.7M
Elucidating Perforin-2 mediated killing mechanisms against pathogenic bacteriaF31AI106290 · NIAID · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MCCORMACK, RYAN MICHAEL · 2013 to 2018
$268k
NCI NIH HHS P01 CA109094NCI NIH HHS R01 CA039201NCI NIH HHS R01CA039201NIAID NIH HHS AI065530NIAID NIH HHS F31 AI106290NIAID NIH HHS F31AI106290NIAID NIH HHS P01 AI096396NIAID NIH HHS P01AI096396NIAID NIH HHS R01 AI065530NIAID NIH HHS R33AI0073234NIAID NIH HHS R33 AI073234
6 · The paper itself

Abstract

Chlamydia trachomatis is a Gram-negative obligate intracellular bacterium that preferentially infects epithelial cells. Professional phagocytes provide C. trachomatis only a limited ability to survive and are proficient killers of chlamydiae. We present evidence herein that identifies a novel host defense protein, perforin-2, that plays a significant role in the eradication of C. trachomatis during the infection of macrophages. Knockdown of perforin-2 in macrophages did not alter the invasion of host cells but did result in chlamydial growth that closely mirrored that detected in HeLa cells. C trachomatis L2, serovar B, and serovar D and C. muridarum were all equally susceptible to perforin-2-mediated killing. Interestingly, induction of perforin-2 expression in epithelial cells is blocked during productive chlamydial growth, thereby protecting chlamydiae from bactericidal attack. Ectopic expression of perforin-2 in HeLa cells, however, does result in killing. Overall, our data implicate a new innate resistance protein in the control of chlamydial infection and may help explain why the macrophage environment is hostile to chlamydial growth.

Indexed as

Chlamydia InfectionsChlamydia trachomatisGene Knockdown TechniquesHeLa CellsHumansImmunoblottingMacrophagesMicroscopy, Electron, TransmissionMicroscopy, FluorescencePore Forming Cytotoxic ProteinsReverse Transcriptase Polymerase Chain ReactionRNA InterferenceTransfectionperforin 2Pore Forming Cytotoxic Proteins

Identifiers

PMID23753625
PMCPMC3719555
OpenAlexW2130786876

What OpenQuestion holds

Textmetadata
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.