Exploring the pathogenesis of chronic atrophic gastritis with atherosclerosis via microarray data analysis

Area of Science:

• Bioinformatics
• Molecular Biology
• Pathogenesis Research

Background:

• Chronic atrophic gastritis (CAG) and atherosclerosis share reported links, but underlying molecular mechanisms remain unclear.
• Investigating commonalities can illuminate shared disease pathways.

Purpose of the Study:

• To explore the molecular mechanisms common to chronic atrophic gastritis (CAG) and atherosclerosis using bioinformatics.
• To identify shared differentially expressed genes, hub genes, and regulatory networks between the two conditions.

Main Methods:

• Downloaded gene expression profiles for atherosclerosis (GSE28829) and CAG (GSE60662) from the Gene Expression Omnibus database.
• Identified co-expressed differentially expressed genes, constructed gene regulatory networks, and performed functional annotation.
• Utilized cytoHubba to select essential hub genes and identified key transcription factors (TFs).

Main Results:

• Identified 116 common differentially expressed genes between CAG and atherosclerosis.
• Functional analysis indicated significant roles for immune responses, TNF production, T cells, phagosomes, leukocyte migration, and cell adhesion molecules.
• Selected 16 hub genes (e.g., PTPRC, TYROBP, ITGB2) and identified SPI1 as a key TF.

Conclusions:

• Findings suggest a shared pathogenesis between chronic atrophic gastritis (CAG) and atherosclerosis.
• Identified joint pathways and hub genes provide novel targets for future research into both diseases.