Helicobacter pylori infection triggers aberrant expression of activation-induced cytidine deaminase in gastric epithelium
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
- 0Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
Related Experiment Videos
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Helicobacter pylori infection causes abnormal activation-induced cytidine deaminase (AID) expression, leading to mutations in the TP53 gene. This mechanism may drive gastric cancer development in H. pylori-infected individuals.
Area Of Science
- Gastroenterology
- Oncology
- Molecular Biology
Background
- Helicobacter pylori (H. pylori) infection is a known risk factor for gastric cancer.
- Gastric carcinogenesis involves genetic alterations in gastric epithelial cells.
Purpose Of The Study
- To investigate the molecular mechanisms by which H. pylori infection contributes to gastric carcinogenesis.
- To determine the role of activation-induced cytidine deaminase (AID) in H. pylori-associated gastric mutations.
Main Methods
- Infection of gastric epithelial cells with cagPAI-positive H. pylori.
- Analysis of activation-induced cytidine deaminase (AID) expression.
- Assessment of nuclear factor-kappaB (NF-kappaB) pathway activation.
- Detection of nucleotide alterations in the TP53 gene.
Main Results
- H. pylori infection induced aberrant AID expression via the IkappaB kinase-dependent NF-kappaB pathway.
- Upregulation of AID led to nucleotide alterations in the TP53 tumor suppressor gene in gastric cells.
- Demonstrated a direct link between H. pylori, AID, and TP53 mutations.
Conclusions
- Aberrant AID expression induced by H. pylori infection is a potential mechanism for mutation accumulation in gastric cancer.
- This study elucidates a pathway linking H. pylori to genetic instability and gastric carcinogenesis.
- Targeting AID or the NF-kappaB pathway could be a therapeutic strategy for H. pylori-associated gastric cancer.
Related Experiment Videos
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.