Evidence map›Paper›PMID 38702412›Full record

ArticleArchives of microbiology2024

Extracellular vesicles from Aggregatibacter actinomycetemcomitans exhibit potential antitumorigenic effects in oral cancer: a comparative in vitro study.

Marjut Metsäniitty, Shrabon Hasnat, Carina Öhman, Tuula Salo, Kari K Eklund, Jan Oscarsson, Abdelhakim Salem

Abstract readComparative Study
In one paragraph

Article in Archives of microbiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. International journal of molecular sciences · 2026
    Article
  3. Review
  4. Frontiers in cellular and infection microbiology · 2026
    Article
  5. Article
  6. Article
  7. Review
  8. Frontiers in microbiology · 2025
    Article
  9. Review
  10. Article
  11. Review
  12. Microorganisms · 2024
    Review
  13. 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

7 authors.

Marjut MetsäniittyDepartment of Oral and Maxillofacial Diseases, Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland.
Shrabon HasnatDepartment of Oral and Maxillofacial Diseases, Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland.
Carina ÖhmanOral Microbiology, Department of Odontology, Umeå University, Umeå, 90187, Sweden.
Tuula SaloDepartment of Oral and Maxillofacial Diseases, Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland.
Kari K EklundDepartment of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, 00014, Finland.
Jan OscarssonOral Microbiology, Department of Odontology, Umeå University, Umeå, 90187, Sweden.
Abdelhakim SalemDepartment of Oral and Maxillofacial Diseases, Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland. abdelhakim.salem@helsinki.fi.ORCID http://orcid.org/0000-0002-9455-3823

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aggregatibacter actinomycetemcomitans is an opportunistic Gram-negative periodontopathogen strongly associated with periodontitis and infective endocarditis. Recent evidence suggests that periodontopathogens can influence the initiation and progression of oral squamous cell carcinoma (OSCC). Herein we aimed to investigate the effect of A. actinomycetemcomitans-derived extracellular vesicles (EVs) on OSCC cell behavior compared with EVs from periodontopathogens known to associate with carcinogenesis. EVs were isolated from: A. actinomycetemcomitans and its mutant strains lacking the cytolethal distending toxin (CDT) or lipopolysaccharide (LPS) O-antigen; Porphyromonas gingivalis; Fusobacterium nucleatum; and Parvimonas micra. The effect of EVs on primary and metastatic OSCC cells was assessed using cell proliferation, apoptosis, migration, invasion, and tubulogenesis assays. A. actinomycetemcomitans-derived EVs reduced the metastatic cancer cell proliferation, invasion, tubulogenesis, and increased apoptosis, mostly in CDT- and LPS O-antigen-dependent manner. EVs from F. nucleatum impaired the metastatic cancer cell proliferation and induced the apoptosis rates in all OSCC cell lines. EVs enhanced cancer cell migration regardless of bacterial species. In sum, this is the first study demonstrating the influence of A. actinomycetemcomitans-derived EVs on oral cancer in comparison with other periodontopathogens. Our findings revealed a potential antitumorigenic effect of these EVs on metastatic OSCC cells, which warrants further in vivo investigations.

Indexed as

Aggregatibacter actinomycetemcomitansApoptosisCell ProliferationExtracellular VesiclesMouth NeoplasmsCarcinoma, Squamous CellCell Line, TumorCell MovementFusobacterium nucleatumHumansPorphyromonas gingivalisAggregatibacter actinomycetemcomitansExtracellular vesiclesFusobacterium nucleatumOral cancerParvimonas micraPorphyromonas gingivalis

Identifiers

PMID38702412
PMCPMC11068833

What OpenQuestion holds

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LicenceCC BY
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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.