Bacterial adhesion to gastric mucosa

"Bacterial adhesion to gastric mucosa" refers to the process by which bacteria—most notably Helicobacter pylori—attach themselves to the epithelial lining of the human stomach using specialized surface proteins called adhesins. This interaction is essential for successful colonization and persistence within the harsh acidic environment. Key H. pylori adhesins include BabA (binding Lewis b antigens), SabA (binding sialylated glycans), HopQ (binding CEACAM family receptors), and HpaA; these facilitate tight binding between bacterium and host cell surfaces. The adhesion process enables bacteria not only to resist being flushed out by mucus turnover but also allows them access to nutrients and positions them optimally for delivering virulence factors such as CagA into host cells via secretion systems—a critical step in triggering inflammation, tissue damage, gastritis, peptic ulcers, and increasing risk for gastric cancer development. Because this is a biological process rather than a discrete molecular target like an enzyme or receptor protein—and involves multiple interacting molecules on both pathogen and host sides—it is not considered a canonical therapeutic target itself but rather describes an important pathogenic mechanism that can be targeted indirectly through drugs that block key adhesive interactions. "Bacterial adhesion to gastric mucosa" is not a single molecule or receptor but instead describes a complex biological event involving several distinct molecular targets on both bacterial (e.g., BabA/SabA/HopQ/HpaA) and human (e.g., Lewis antigens/CEACAMs/glycan structures) sides; thus it should not be treated as one canonical drug target entity.

Other names

Adhesion of Helicobacter pylori to gastric mucosaH. pylori adhesionBacterial colonization of gastric epithelium

Inhibition or disruption of bacterial adhesin-host receptor interactions to prevent colonization and subsequent pathogenesis