Evidence map›Paper›PMID 34001559›Full record

ArticleInfection and immunity2021

Persistence Alters the Interaction between Chlamydia trachomatis and Its Host Cell.

Mary R Brockett, George W Liechti

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 4% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Infection and immunity · 2026
    Article
  7. Anti-International journal of molecular sciences · 2026
    Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Current Evidence of Maternal Infection With Chlamydia trachomatis and Preeclampsia Risk.American journal of reproductive immunology (New York, N.Y. : 1989) · 2025
    Review
  13. Article
  14. A conservedMicrobiology (Reading, England) · 2025
    Article
  15. Journal of bacteriology · 2025
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Recognition ofInfection and immunity · 2024
    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

2 authors at 2 institutions in 1 country.

Mary R BrockettDepartment of Microbiology and Immunology, Uniformed Services University, Bethesda, Maryland, USA.
George W LiechtiDepartment of Microbiology and Immunology, Uniformed Services University, Bethesda, Maryland, USA.
Henry M. Jackson Foundation · USUniformed Services University of the Health Sciences · US

Funding

Cellular organization, division, and differentiation in an ancient, genetically reduced bacteriumR35GM138202 · NIGMS · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI GEORGE WARREN LIECHTI · 2020 to 2026
$2.0M
NIGMS NIH HHS R35 GM138202
6 · The paper itself

Abstract

In response to stress, the obligate intracellular pathogen Chlamydia trachomatis stops dividing and halts its biphasic developmental cycle. The infectious, extracellular form of this bacterium is highly susceptible to killing by the host immune response, and by pausing development, Chlamydia can survive in an intracellular, "aberrant" state for extended periods of time. The relevance of these aberrant forms has long been debated, and many questions remain concerning how they contribute to the persistence and pathogenesis of the organism. Using reporter cell lines, fluorescence microscopy, and a dipeptide labeling strategy, we measured the ability of C. trachomatis to synthesize, assemble, and degrade peptidoglycan under various aberrance-inducing conditions. We found that all aberrance-inducing conditions affect chlamydial peptidoglycan and that some actually halt the biosynthesis pathway early enough to prevent the release of an immunostimulatory peptidoglycan component, muramyl tripeptide. In addition, utilizing immunofluorescence and electron microscopy, we determined that the induction of aberrance can detrimentally affect the development of the microbe's pathogenic vacuole (the inclusion). Taken together, our data indicate that aberrant forms of Chlamydia generated by different environmental stressors can be sorted into two broad categories based on their ability to continue releasing peptidoglycan-derived, immunostimulatory muropeptides and their ability to secrete effector proteins that are normally expressed at the mid- and late stages of the microbe's developmental cycle. Our findings reveal a novel, immunoevasive feature inherent to a subset of aberrant chlamydial forms and provide clarity and context to the numerous persistence mechanisms employed by these ancient, genetically reduced microbes.

Indexed as

BiomarkersBiosynthetic PathwaysCell LineChlamydia InfectionsChlamydia trachomatisDisease SusceptibilityEnergy MetabolismHost-Pathogen InteractionsHumansStress, PhysiologicalBiomarkersChlamydia trachomatisimmune evasionpathoadaptationpeptidoglycanpersistencesecretion systems

Identifiers

PMID34001559
PMCPMC8281235
OpenAlexW3161617929

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.