Helicobacter pylori biofilm (H. pylori biofilm)

Helicobacter pylori biofilm is a complex, multicellular community of bacteria encased within a self-produced matrix of extracellular polymeric substances (EPS), including polysaccharides, proteins, and extracellular DNA. This structure facilitates the attachment of H. pylori to the gastric mucosa and provides a protective shield against the host's immune response and the highly acidic environment of the stomach. Biofilm formation is a critical survival strategy that enables the bacteria to transition from a motile planktonic state to a sessile state, significantly contributing to bacterial persistence and chronic infection (Hathroubi et al., 2018, NPJ Biofilms Microbiomes). In a clinical context, the H. pylori biofilm is a major therapeutic target because it serves as a primary reservoir for antibiotic resistance. The dense EPS matrix acts as a physical barrier that limits the diffusion of standard antibiotics like clarithromycin and amoxicillin, while also harboring metabolically inactive 'persister' cells that survive conventional treatments. Therapeutic strategies often involve the use of biofilm-disrupting agents, such as N-acetylcysteine or bismuth salts, in combination with potent acid suppressants like vonoprazan to enhance drug penetration and efficacy (Cammarota et al., 2010, Alimentary Pharmacology & Therapeutics). Eradicating the biofilm is essential for the successful treatment of peptic ulcers and the prevention of gastric malignancies associated with long-term H. pylori colonization.

Other names

Helicobacter pylori extracellular polymeric substanceH. pylori EPS matrixHelicobacter pylori sessile community

Disruption of the extracellular polymeric substance (EPS) matrix, inhibition of bacterial adhesion to gastric epithelial cells, and enhancement of antibiotic penetration into the sessile bacterial community.