Pathogen adhesion to epithelial cell

Pathogen adhesion to epithelial cells is a critical first step in the infection process for numerous microorganisms, including bacteria such as *Listeria monocytogenes* and *Mycoplasma pneumoniae*. This adhesion is mediated by specialized bacterial surface proteins—adhesins—which recognize and bind to host cell molecules such as E-cadherin, integrins, or glycoproteins. Successful adhesion facilitates colonization, helps pathogens evade innate immune mechanisms like mucociliary clearance, and often triggers host cell signaling pathways that promote inflammation or immune response. In some cases, pathogens initiate further invasion and tissue damage by exploiting the adhesion site and may even disseminate to other parts of the body. Although adhesion is not a traditional drug target, it is the subject of vaccine design and anti-adhesive drug strategies aimed at blocking microbial attachment, thereby preventing infection initiation. Key molecular examples (not exhaustive): - *Listeria* Internalin A interacting with host E-cadherin - *Mycoplasma pneumoniae* P1 protein interacting with respiratory epithelium, triggering inflammatory cytokines - Various bacterial adhesins interacting with integrins, TLRs, other membrane receptors This entry should not be considered a canonical molecular therapeutic target. For structured drug or biomarker data, refer to specific pathogen adhesin molecules (e.g., Internalin A, P1 adhesin) or host receptors (e.g., E-cadherin, integrin) involved in the adhesion process.

Other names

Microbial adhesion to epitheliumBacterial attachment to epithelial cellPathogen-host cell adhesion