Uropathogenic Escherichia coli outer membrane and cell surface (UPEC OM)

The uropathogenic Escherichia coli (UPEC) outer membrane and cell surface constitute a multifaceted structural and functional barrier essential for the survival and virulence of UPEC within the urinary tract [1]. This surface is characterized by a diverse array of virulence factors, including adhesins like FimH (Type 1 fimbriae) and PapG (P fimbriae), which mediate attachment to the bladder and kidney epithelium, respectively [2][3]. The outer membrane also contains lipopolysaccharides (LPS) and various outer membrane proteins (OMPs) that contribute to structural integrity, nutrient acquisition, and evasion of the host's innate immune system [4]. From a therapeutic perspective, this surface is a high-value target; polymyxin antibiotics act by binding to LPS and disrupting membrane stability, while emerging anti-adhesive therapies aim to block bacterial colonization without exerting the selective pressure of traditional bactericidal agents [5][6]. Furthermore, the surface-exposed components are the primary focus for vaccine development, seeking to elicit antibodies that neutralize the bacteria before they can establish an infection [7]. Sources: [1] PMC3357104; [2] PubMed 22561066; [3] Nature Reviews Microbiology 17, 297–311 (2019); [4] PMC4415365; [5] Frontiers in Microbiology 11, 1426 (2020); [6] Microbiology Society; [7] PubChem CID 5360371.

Other names

UPEC cell surfaceUPEC outer membraneUropathogenic E. coli cell envelopeUPEC surface antigens

Disruption of bacterial outer membrane integrity, inhibition of bacterial adhesion to host cells, and neutralization of surface-exposed virulence factors.