Evidence map›Paper›PMID 15102784›Full record

ArticleInfection and immunity2004

Engulfment of Neisseria gonorrhoeae: revealing distinct processes of bacterial entry by individual carcinoembryonic antigen-related cellular adhesion molecule family receptors.

Shannon E McCaw, Edward H Liao, Scott D Gray-Owen

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

41 citing papers in PubMed, 66 citations in OpenAlex.

  1. C4BP occludes the non-opsonic interaction ofInfection and immunity · 2026
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  3. C4BP occludes the non-opsonic interaction ofbioRxiv : the preprint server for biology · 2026
    Article
  4. Neutrophil CEACAMs and the Inflammatory Response toJournal of innate immunity · 2026
    Review
  5. Mechanisms of host manipulation byFrontiers in microbiology · 2023
    Review
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  15. Article
  16. Review
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  19. Article
  20. Determination ofAntimicrobial agents and chemotherapy · 2013
    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

3 authors at 1 institution in 1 country.

Shannon E McCawDepartment of Medical Genetics and Microbiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada.
Edward H Liao
Scott D Gray-Owen
University of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Individual Neisseria gonorrhoeae colony opacity-associated (Opa) protein variants can bind up to four different carcinoembryonic antigen-related cellular adhesion molecule (CEACAM) receptors. Most human cells encountered by gonococci express a combination of CEACAM receptors, thereby complicating the elucidation of intracellular signaling pathways triggered by individual receptors. Here, we compare the process of bacterial engulfment by a panel of stably transfected HeLa epithelial cell lines expressing each CEACAM receptor in isolation. CEACAM1 and CEACAM3 each contain proteinaceous transmembrane and cytoplasmic domains; however, the processes of neisserial uptake mediated by these receptors differ with respect to their susceptibilities to both tyrosine kinase inhibitors and the actin microfilament-disrupting agent cytochalasin D. Neisserial uptake mediated by glycosylphosphatidylinositol (GPI)-anchored CEACAM5 and CEACAM6 was not significantly affected by any of a broad spectrum of inhibitors tested. However, cleavage of the GPI anchor by phosphatidylinositol-specific phospholipase C reduced bacterial uptake by HeLa cells expressing CEACAM5, consistent with a single zipper-like mechanism of uptake mediated by this receptor. Regardless of the CEACAM receptor expressed, internalized gonococci were effectively killed by a microtubule-dependent process that required acidification of the bacterium-containing phagosome. Given the phase-variable nature of neisserial Opa proteins, these results indicate that the mechanism of bacterial engulfment and the cellular response to gonococcal infection depend on both the receptor specificities of the neisserial Opa protein variants expressed and the spectrum of CEACAM receptors present on target cells, each of which determines the combination of receptors ultimately engaged.

Indexed as

Antigens, CDAntigens, DifferentiationAntigens, NeoplasmBacterial AdhesionCarcinoembryonic AntigenCell Adhesion MoleculesCytoskeletonGlycosylphosphatidylinositolsGPI-Linked ProteinsHeLa CellsHumansIntegrinsKineticsModels, BiologicalNeisseria gonorrhoeaePhagocytosisAntigens, CDAntigens, DifferentiationAntigens, NeoplasmCarcinoembryonic AntigenCD66 antigensCEACAM3 protein, humanCEACAM6 protein, humanCell Adhesion MoleculesGlycosylphosphatidylinositolsGPI-Linked ProteinsIntegrins

Identifiers

PMID15102784
PMCPMC387857
OpenAlexW2131337662

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.