Evidence map›Paper›PMID 32250340›Full record

ArticleThe Journal of clinical investigation2020

Bacterial CagA protein compromises tumor suppressor mechanisms in gastric epithelial cells.

Manikandan Palrasu, Elena Zaika, Wael El-Rifai, Monica Garcia-Buitrago, Maria Blanca Piazuelo, Keith T Wilson, Richard M Peek, Alexander I Zaika

Open access · greenAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

37 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. World journal of gastrointestinal oncology · 2025
    Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. An antibiotic-free platform for eliminating persistentActa pharmaceutica Sinica. B · 2024
    Article
  15. Sustained exposure to Helicobacter pylori induces immune tolerance by desensitizing TLR6.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2024
    Article
  16. Article
  17. Review
  18. Review
  19. PPARδ dysregulation of CCL20/CCR6 axis promotes gastric adenocarcinoma carcinogenesis by remodeling gastric tumor microenvironment.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2023
    Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Manikandan PalrasuDepartment of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
Elena ZaikaDepartment of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
Wael El-RifaiDepartment of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
Monica Garcia-BuitragoDepartment of Pathology, University of Miami Miller School of Medicine, Miami, Florida, USA.
Maria Blanca PiazueloDivision of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Keith T WilsonDivision of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Richard M PeekDivision of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Alexander I ZaikaDepartment of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
University of Miami · USVanderbilt University Medical Center · USVA Tennessee Valley Healthcare System · US

Funding

Tumor Immunology and Microenvironment Research ProgramP30CA068485 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI STACIE B DUSETZINA · 1995 to 2026
$172.8M
Translational Analysis CoreP30DK058404 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RICHARD M. PEEK · 2002 to 2026
$29.9M
Role of Iron and B-Catenin Activation in Gastric CarcinogenesisP01CA116087 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI Kevin L Schey · 2009 to 2026
$27.5M
Project 3 - Molecular Signatures of Gastric Carcinogenesis in the Host Response to H. pyloriP01CA028842 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI WILSON, KEITH T. · 1985 to 2019
$15.8M
H.Pylori Relationship to Digestive Diseases and CancerR01CA077955 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RICHARD M. PEEK · 2003 to 2026
$9.7M
Regulation of the Oncogenic Stress Response in Helicobacter pylori-infected cellsR01CA138833 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ALEXANDER I. ZAIKA · 2010 to 2026
$4.3M
Targeted chemoprevention of gastric carcinogenesis in high risk populationsR01CA190612 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI MORGAN, DOUGLAS, WILSON, KEITH T. · 2014 to 2018
$3.0M
Mechanisms of Tumorigenic Transformation of Barretts EsophagusR01CA206564 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ZAIKA, ALEXANDER I. · 2015 to 2019
$1.8M
The Macrophage Reverse Transsulfuration Pathway: A Novel Mediator of Helicobacter pylori ImmunopathogenesisR21AI142042 · NIAID · VANDERBILT UNIVERSITY MEDICAL CENTER · PI WILSON, KEITH T. · 2019 to 2020
$468k
Dysregulated Polyamine Metabolism in H. pylori-associated Gastric Inflammation and Disease ProgressionI01CX002171 · VA · VETERANS HEALTH ADMINISTRATION · PI Keith T. Wilson · 2020 to 2026
–
Regulation of gastroesophageal reflux-associated tumorigenesisI01BX002115 · VA · VETERANS HEALTH ADMINISTRATION · PI ZAIKA, ALEXANDER I. · 2014 to 2024
–
Arginine Availability and Metabolism in the Immune Evasion of H. pyloriI01BX001453 · VA · VETERANS HEALTH ADMINISTRATION · PI WILSON, KEITH T. · 2012 to 2019
–
BLRD VA I01 BX001453BLRD VA I01 BX002115CSRD VA I01 CX002171NCI NIH HHS P01 CA028842NCI NIH HHS P01 CA116087NCI NIH HHS P30 CA068485NCI NIH HHS R01 CA077955NCI NIH HHS R01 CA138833NCI NIH HHS R01 CA190612NCI NIH HHS R01 CA206564NIAID NIH HHS R21 AI142042NIDDK NIH HHS P30 DK058404
6 · The paper itself

Abstract

Approximately half of the world's population is infected with the stomach pathogen Helicobacter pylori. Infection with H. pylori is the main risk factor for distal gastric cancer. Bacterial virulence factors, such as the oncoprotein CagA, augment cancer risk. Yet despite high infection rates, only a fraction of H. pylori-infected individuals develop gastric cancer. This raises the question of defining the specific host and bacterial factors responsible for gastric tumorigenesis. To investigate the tumorigenic determinants, we analyzed gastric tissues from human subjects and animals infected with H. pylori bacteria harboring different CagA status. For laboratory studies, well-defined H. pylori strain B128 and its cancerogenic derivative strain 7.13, as well as various bacterial isogenic mutants were employed. We found that H. pylori compromises key tumor suppressor mechanisms: the host stress and apoptotic responses. Our studies showed that CagA induces phosphorylation of XIAP E3 ubiquitin ligase, which enhances ubiquitination and proteasomal degradation of the host proapoptotic factor Siva1. This process is mediated by the PI3K/Akt pathway. Inhibition of Siva1 by H. pylori increases survival of human cells with damaged DNA. It occurs in a strain-specific manner and is associated with the ability to induce gastric tumor.

Indexed as

Antigens, BacterialApoptosis Regulatory ProteinsBacterial ProteinsEpithelial CellsGastric MucosaHCT116 CellsHelicobacter pyloriHumansNeoplasm ProteinsProteolysisStomach NeoplasmsUbiquitinationX-Linked Inhibitor of Apoptosis ProteinAntigens, BacterialApoptosis Regulatory ProteinsBacterial ProteinscagA protein, Helicobacter pyloriNeoplasm ProteinsSIVA1 protein, humanXIAP protein, humanX-Linked Inhibitor of Apoptosis ProteinGastric cancerGastroenterology

Identifiers

PMID32250340
PMCPMC7190987
OpenAlexW3014607776

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.