Target intelligence / Profile preview

Enterotoxigenic Escherichia coli Colonization Factor Antigen I (CFA/I)

Target: CFA/I
Molecular classification: Fimbrial protein complex, Adhesin

Overview

Enterotoxigenic Escherichia coli’s Colonization Factor Antigen I (CFA/I) is a rigid fimbrial structure crucial for bacterial adherence to host intestinal mucosa—a prerequisite step for effective infection leading to diarrheal disease. Its prevalence among pathogenic strains makes it both an epidemiologically important marker and an attractive target for vaccine development efforts aimed at preventing traveler's diarrhea and childhood morbidity due to ETEC infections worldwide.

Other names: Colonization Factor Antigen ICFA1CFA I

Mechanism of action

Antibodies against CFA/I can block bacterial attachment to intestinal cells, preventing colonization and subsequent toxin delivery.

Biological functions

Adhesion to intestinal epithelial cellsColonization of small intestineBacterial attachment

Disease associations

InfectionDiarrheal diseaseTraveler's diarrheaETEC infection

Safety considerations

Phase variation affecting expression levelsGenetic instability affecting expression

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