Bacterial cell wall and surface adhesins

Bacterial cell wall and surface adhesins are critical structural and functional components that facilitate bacterial survival and host colonization. The bacterial cell wall, primarily composed of peptidoglycan, provides structural integrity and protects the cell from osmotic lysis, serving as the primary target for major antibiotic classes like beta-lactams and glycopeptides [1]. Surface adhesins, such as pili, fimbriae, and Microbial Surface Components Recognizing Adhesive Matrix Molecules (MSCRAMMs), are specialized proteins that mediate the attachment of bacteria to host tissues or medical devices [2, 3]. This adhesion is a prerequisite for infection and the subsequent development of biofilms, which significantly increase resistance to both the host immune response and antimicrobial therapy [3]. Targeting these components involves either disrupting the synthesis of the cell wall to induce bacterial lysis or using anti-adhesion agents to prevent the initial stages of infection [4]. While cell wall inhibitors are a cornerstone of modern medicine, the development of resistance and the impact on the commensal microbiome remain significant challenges [1, 4]. Emerging therapies focus on high-affinity inhibitors of specific adhesins, such as FimH, to treat chronic infections without killing beneficial bacteria [2].

Other names

Bacterial cell envelopeMicrobial surface components recognizing adhesive matrix moleculesMSCRAMMsBacterial adhesinsBacterial piliBacterial fimbriae

Inhibition of peptidoglycan synthesis and competitive inhibition of bacterial attachment to host ligands