Evidence map›Paper›PMID 18782353›Full record

ArticleCellular microbiology2009

Helicobacter pylori activate epidermal growth factor receptor- and phosphatidylinositol 3-OH kinase-dependent Akt and glycogen synthase kinase 3beta phosphorylation.

Fazal H Tabassam, David Y Graham, Yoshio Yamaoka

Open access · bronzeAbstract read
In one paragraph

Article in Cellular microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

62 citing papers in PubMed, 95 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Frontiers in immunology · 2024
    Review
  8. A review of signal pathway induced by virulent protein CagA ofFrontiers in cellular and infection microbiology · 2023
    Review
  9. Review
  10. Review
  11. Review
  12. Bacteria-Cancer Interface: Awaiting the Perfect Storm.Pathogens (Basel, Switzerland) · 2021
    Review
  13. Article
  14. Review
  15. MicroRNA Modulation of Host Immune Response and Inflammation Triggered byInternational journal of molecular sciences · 2021
    Review
  16. Article
  17. Article
  18. Article
  19. The Possible Role ofFrontiers in oncology · 2019
    Review
  20. Review

2 more citing papers are in PubMed but not listed here.

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.

Fazal H TabassamDepartment of Medicine-Gastroenterology, Michael DeBakey Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX 77030, USA.
David Y Graham
Yoshio Yamaoka
Michael E. DeBakey VA Medical Center · US

Funding

Tissue Analysis & Molecular Imaging CoreP30DK056338 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI FASIHA KANWAL · 2001 to 2026
$28.3M
REGULATION OF CXC CHEMOKINE EXPRESSION BY H. PYLORIR01DK062813 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI YAMAOKA, YOSHIO · 2004 to 2013
$3.0M
NIDDK NIH HHS DK56338NIDDK NIH HHS DK 62813NIDDK NIH HHS P30 DK056338NIDDK NIH HHS R01 DK062813
6 · The paper itself

Abstract

The signalling pathways leading to the development of Helicobacter pylori-induced gastric cancer remain poorly understood. We tested the hypothesis that H. pylori infections involve the activation of Akt signalling in human gastric epithelial cancer cells. Immunoblot, immunofluorescence and kinase assays show that H. pylori infection of gastric epithelial cells induced phosphorylation of Akt at Ser 473 and Thr 308. Mutations in the H. pylori virulence factor OipA dramatically reduced phosphorylation of Ser 473, while the cag pathogenicity island mutants predominantly inhibited phosphorylation of Thr 308. As the downstream of Akt activation, H. pylori infection inactivated the inactivation of glycogen synthase kinase 3beta at Ser 9 by its phosphorylation. As the upstream of Akt activation, H. pylori infection activated epidermal growth factor receptor (EGFR) at Tyr 992, phosphatidylinositol 3-OH kinase (PI3K) p85 subunit and PI3K-dependent kinase 1 at Ser 241. Pharmacologic inhibitors of PI3K or mitogen-activated protein kinase kinase (MEK), Akt knock-down and EGFR knock-down showed that H. pylori infection induced the activation of EGFR-->PI3K-->PI3K-dependent kinase 1-->Akt-->extracellular signal-regulated kinase signalling pathways, the inactivation of glycogen synthase kinase 3beta and interleukin-8 production. The combined functions of cag pathogenicity island and OipA were necessary and sufficient for full activation of signalling at each level. We propose activation of these pathways as a novel mechanism for H. pylori-mediated carcinogenesis.

Indexed as

Bacterial Outer Membrane ProteinsCell Line, TumorErbB ReceptorsFluorescent Antibody TechniqueGenomic IslandsGlycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaHelicobacter pyloriHumansImmunoblottingInterleukin-8Phosphatidylinositol 3-KinasesPhosphorylationProtein KinasesProto-Oncogene Proteins c-aktBacterial Outer Membrane ProteinsErbB ReceptorsGlycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaGSK3B protein, humanInterleukin-8OipA protein, Helicobacter pyloriPhosphatidylinositol 3-KinasesProtein KinasesProto-Oncogene Proteins c-akt

Identifiers

PMID18782353
PMCPMC2827479
OpenAlexW2069137575

What OpenQuestion holds

Textmetadata
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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.