Evidence map›Paper›PMID 29543918›Full record

ArticlePLoS pathogens2018

Chlamydia trachomatis inclusion membrane protein MrcA interacts with the inositol 1,4,5-trisphosphate receptor type 3 (ITPR3) to regulate extrusion formation.

Phu Hai Nguyen, Erika I Lutter, Ted Hackstadt

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

46 citing papers in PubMed, 70 citations in OpenAlex.

  1. Live Imaging of Ions in Cells Infected with Chlamydia trachomatis.Methods in molecular biology (Clifton, N.J.) · 2027
    Article
  2. Genome-wide association studies ofInfection and immunity · 2026
    Article
  3. Infection and immunity · 2026
    Article
  4. Inclusion Membrane Proteins ofMicroorganisms · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Journal of bacteriology · 2025
    Review
  11. mBio · 2024
    Article
  12. Article
  13. Review
  14. ThemBio · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Establishing the intracellular niche of obligate intracellular vacuolar pathogens.Frontiers in cellular and infection microbiology · 2023
    Review
  20. Molecular pathogenesis ofFrontiers in cellular and infection microbiology · 2023
    Review
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

3 authors at 2 institutions in 1 country.

Phu Hai NguyenHost-Parasite Interactions Section, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America.
Erika I LutterHost-Parasite Interactions Section, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America.ORCID 0000-0002-1953-2467
Ted HackstadtHost-Parasite Interactions Section, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America.ORCID 0000-0003-1367-5528
National Institutes of Health · USOklahoma State University · US

Funding

Cellular Biology Of Host/parasite InteractionsZIAAI000567 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI HACKSTADT, TED · 2009 to 2025
$16.3M
RICKETTSIAL SURFACE STRUCTURE AND FUNCTIONZ01AI000567 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI HACKSTADT, DAVID (TED) · 1991 to 2008
$2.5M
Intramural NIH HHS Z01 AI000567
6 · The paper itself

Abstract

Chlamydia trachomatis is an obligate intracellular bacterium that replicates within a vacuole termed an inclusion. At the end of their intracellular developmental cycle, chlamydiae are released either by lysis of the host cell or extrusion of the intact inclusion. The inclusion membrane is extensively modified by the insertion of type III secreted inclusion membrane proteins, Incs, which contribute to inclusion membrane structure and facilitate host-pathogen interactions. An interaction was identified between the inclusion membrane protein, MrcA, and the Ca2+ channel inositol-1,4,5-trisphosphate receptor, type 3 (ITPR3). ITPR3 was recruited and localized to active Src-family-kinase rich microdomains on the inclusion membrane as was the Ca2+ sensor, STIM1. Disruption of MrcA by directed mutagenesis resulted in loss of ITPR3 recruitment and simultaneous reduction of chlamydial release by extrusion. Complementation of MrcA restored ITPR3 recruitment and extrusion. Inhibition of extrusion was also observed following siRNA depletion of host ITPR3 or STIM1. Chlamydial extrusion was also inhibited by the calcium chelator BAPTA-AM. Each of these treatments resulted in a concomitant reduction in phosphorylation of the myosin regulatory light chain (MLC2) and a loss of myosin motor activity at the end of the developmental cycle which is consistent with the reduced extrusion formation. These studies suggest that Ca2+ signaling pathways play an important role in regulation of release mechanisms by C. trachomatis.

Indexed as

Host-Pathogen InteractionsChlamydia InfectionsChlamydia trachomatisHeLa CellsHumansInclusion BodiesInositol 1,4,5-Trisphosphate ReceptorsMembrane ProteinsPhosphorylationInositol 1,4,5-Trisphosphate ReceptorsMembrane Proteins

Identifiers

PMID29543918
PMCPMC5854415
OpenAlexW2793110975

What OpenQuestion holds

Textmetadata
LicenceCC0
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.