Evidence map›Paper›PMID 21622527›Full record

ArticleMicrobiology (Reading, England)2011

Tannerella forsythia invasion in oral epithelial cells requires phosphoinositide 3-kinase activation and clathrin-mediated endocytosis.

Elina Mishima, Ashu Sharma

Open access · greenAbstract read
In one paragraph

Article in Microbiology (Reading, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Vitamin DInternational journal of molecular sciences · 2025
    Article
  4. The intriguing strategies ofFrontiers in oral health · 2024
    Article
  5. Unique miRomics Expression Profiles inInternational journal of molecular sciences · 2023
    Article
  6. Article
  7. Article
  8. Shut-Down of Type IX Protein Secretion Alters the Host Immune Response toFrontiers in cellular and infection microbiology · 2022
    Article
  9. Article
  10. Journal of oral microbiology · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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 1 institution in 1 country.

Elina MishimaDepartment of Oral Biology, School of Dental Medicine, University at Buffalo, State University of New York, NY, USA.
Ashu SharmaDepartment of Oral Biology, School of Dental Medicine, University at Buffalo, State University of New York, NY, USA.
University at Buffalo, State University of New York · US

Funding

T. forsythia TLR2 ligands and surface glycans coordinate periodontal inflammationR01DE014749 · NIDCR · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI SHARMA, ASHU · 2003 to 2018
$4.9M
T helper cell responses in Tanerella forsythia-induced alveolar bone destructionR01DE019424 · NIDCR · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI GAFFEN, SARAH L, SHARMA, ASHU · 2008 to 2011
$1.5M
NIDCR NIH HHS DE014749NIDCR NIH HHS DE019424NIDCR NIH HHS R01 DE014749NIDCR NIH HHS R01 DE019424
6 · The paper itself

Abstract

Tannerella forsythia, a Gram-negative anaerobe implicated in periodontitis, has been detected within human buccal epithelial cells and shown to invade oral epithelial cells in vitro. We have previously shown that this bacterium triggers host tyrosine kinase-dependent phosphorylation and actin-dependent cytoskeleton reorganization for invasion. On the bacterial side, the leucine-rich repeat cell-surface BspA protein is important for entry. The present study was undertaken to identify host signalling molecules during T. forsythia entry into human oral and cervical epithelial cells. Specifically, the roles of phosphatidylinositol 3-kinase (PI3K), Rho-family GTPases, cholesterol-rich membrane microdomains and the endocytic protein clathrin were investigated. For this purpose, cell lines were pretreated with chemical inhibitors or small interfering RNAs (siRNAs) that target PI3Ks, Rho GTPases, clathrin and cholesterol (a critical component of 'lipid rafts'), and the resulting effects on T. forsythia uptake were determined. Our studies revealed that T. forsythia entry is dependent on host PI3K signalling, and that purified BspA protein causes activation of this lipid kinase. Bacterial entry also requires the cooperation of host Rac1 GTPase. Finally, our findings indicate an important role for clathrin and cholesterol-rich lipid microdomains in the internalization process.

Indexed as

EndocytosisHost-Pathogen InteractionsBacterial ProteinsBacteroidetesClathrinEpithelial CellsHeLa CellsHumansMembrane MicrodomainsMembrane ProteinsMouth MucosaPhosphatidylinositol 3-Kinasesrac1 GTP-Binding ProteinBacterial ProteinsBspA protein, bacteriaClathrinMembrane ProteinsPhosphatidylinositol 3-Kinasesrac1 GTP-Binding Protein

Identifiers

PMID21622527
PMCPMC3167883
OpenAlexW2076479936

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.