Pathogen adhesion

Pathogen adhesion refers to the process by which microorganisms such as bacteria, viruses, or fungi attach themselves to the surface of host cells. This is not a single molecule or receptor but rather an essential step in the establishment of infection and pathogenesis. The process is mediated by specialized microbial molecules called adhesins, which are often located on structures like fimbriae or pili in bacteria. These adhesins bind specifically to complementary receptors on the surface of host cells—such as glycoproteins or glycolipids—enabling pathogens to colonize tissues and resist removal by physical forces like mucus flow or urination[2][4][5][6]. Adhesion triggers downstream effects including activation of signaling pathways in both pathogen and host; for example, it can modulate immune responses and facilitate invasion into deeper tissues[2][4]. Disruption or inhibition of this process is an attractive strategy for preventing infections; thus, some vaccines target key adhesin proteins. Because "pathogen adhesion" describes a biological process rather than a discrete molecular entity such as an enzyme, transporter, receptor protein, etc., it should not be considered a canonical therapeutic target itself. Instead, individual adhesin molecules expressed by pathogens are valid drug targets. Therefore: – "Pathogen adhesion" is not itself a molecule/receptor but refers broadly to mechanisms/pathways used by pathogens for initial attachment. – The correct approach would be to specify particular microbial adhesins (e.g., FimH from E. coli) when seeking structured information about drug targets. In summary: "Pathogen adhesion" is best understood as an infectious disease mechanism involving many different molecules rather than one canonical target protein.[2][4][5][6]

Other names

Microbial adhesionBacterial adhesionAdhesion (in the context of infection)Pathogen-host cell attachment

Inhibition of pathogen attachment to host cells by blocking adhesin-receptor interactions