Helicobacter pylori cell envelope and multiple bacterial enzymes

Helicobacter pylori cell envelope and multiple bacterial enzymes represent a collective group of therapeutic targets within the Gram-negative bacterium H. pylori, which colonizes the human gastric mucosa. The cell envelope, consisting of the inner membrane, a thin peptidoglycan layer, and an outer membrane containing lipopolysaccharides, provides structural integrity and protection against the acidic environment of the stomach (Kusters et al., 2006, PMID: 16847081). Key enzymes within this group include urease, which catalyzes the hydrolysis of urea to ammonia to neutralize gastric acid, and various proteins involved in DNA replication and protein synthesis (Mobley et al., 1995, PMID: 7565414). Targeting these components is the basis for multi-drug eradication regimens used to treat gastric infections and prevent associated complications such as peptic ulcers and gastric adenocarcinoma (Malfertheiner et al., 2017, Gut). Antimicrobial agents like bismuth salts exert multi-targeted effects by disrupting the cell wall and inhibiting metabolic enzymes, while specific antibiotics target individual processes like cell wall assembly or translation (Graham & Fischbach, 2010, PMID: 20601539).

Other names

Helicobacter pylori cellular targetsH. pylori cell wall and enzymesBismuth-sensitive H. pylori components

The mechanism involves the disruption of the bacterial cell wall and membrane integrity, alongside the inhibition of key metabolic enzymes such as urease, which is essential for the bacterium's survival in acidic gastric environments (DrugBank Online, DB01294). Additionally, associated antibiotics inhibit protein synthesis by binding to ribosomal subunits or interfere with DNA replication by inhibiting DNA gyrase (Malfertheiner et al., 2017).