Evidence map›Paper›PMID 39138804›Full record

ArticleHuman cell2024

Zebrafish larvae as a model for studying the impact of oral bacterial vesicles on tumor cell growth and metastasis.

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

Abstract read
In one paragraph

Article in Human cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–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

5 citing papers in PubMed.

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

Funding

Research Council of Finland 362035
6 · The paper itself

Abstract

Oral bacteria naturally secrete extracellular vesicles (EVs), which have attracted attention for their promising biomedical applications including cancer therapeutics. However, our understanding of EV impact on tumor progression is hampered by limited in vivo models. In this study, we propose a facile in vivo platform for assessing the effect of EVs isolated from different bacterial strains on oral cancer growth and dissemination using the larval zebrafish model. EVs were isolated from: wild-type Aggregatibacter actinomycetemcomitans and its mutant strains lacking the cytolethal distending toxin (CDT) or lipopolysaccharide (LPS) O-antigen; and wild-type Porphyromonas gingivalis. Cancer cells pretreated with EVs were xenotransplanted into zebrafish larvae, wherein tumor growth and metastasis were screened. We further assessed the preferential sites for the metastatic foci development. Interestingly, EVs from the CDT-lacking A. actinomycetemcomitans resulted in an increased tumor growth, whereas EVs lacking the lipopolysaccharide O-antigen reduced the metastasis rate. P. gingivalis-derived EVs showed no significant effects. Cancer cells pretreated with EVs from the mutant A. actinomycetemcomitans strains tended to metastasize less often to the head and tail compared to the controls. In sum, the proposed approach provided cost- and labor-effective yet efficient model for studying bacterial EVs in oral carcinogenesis, which can be easily extended for other cancer types. Furthermore, our results support the notion that these nanosized particles may represent promising targets in cancer therapeutics.

Indexed as

Aggregatibacter actinomycetemcomitansDisease Models, AnimalExtracellular VesiclesLarvaMouth NeoplasmsNeoplasm MetastasisPorphyromonas gingivalisZebrafishAnimalsBacterial ToxinsCell Line, TumorCell ProliferationHumansLipopolysaccharidesO AntigensBacterial Toxinscytolethal distending toxinLipopolysaccharidesO AntigensCancer cell lineExtracellular vesiclesOral bacteriaOral cancerZebrafish larvae

Identifiers

PMID39138804
PMCPMC11481661

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Registered trials

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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.