Propionibacterium acnes cell wall

Propionibacterium acnes (now commonly renamed Cutibacterium acnes) is a Gram-positive, anaerobic bacterium that forms a major component of the human skin microbiome but can also function as an opportunistic pathogen [2][7]. Its cell wall and membrane are characteristic of Gram-positive bacteria, consisting of a thick peptidoglycan layer, teichoic acids, and distinct lipid components including phosphatidylinositol and triacylglycerol [7]. The cell wall contains virulence factors such as surface proteins (e.g., DsA1), adhesins, and enzymes (lipases, proteases), and mediates essential functions such as adherence to host tissues, immune system activation (including stimulation of proinflammatory cytokines through TLR2 and other pathways [4]), and robust biofilm formation on host surfaces and implanted devices [1][2][4]. The biofilm matrix incorporates extracellular DNA and proteins, protecting bacteria from antibiotics and host defenses. The cell wall/membrane is targeted by several antibiotics and experimental antimicrobial peptides, making it a valid but complex therapeutic target. However, "Propionibacterium acnes cell wall/membrane" refers to a broad bacterial structural component rather than a single defined protein, receptor, or molecular target, which limits its utility as a precise pharmacological target.

Other names

Cutibacterium acnes cell wallP. acnes cell wallC. acnes cell wallPropionibacterium acnes membraneCutibacterium acnes membrane

Disruption or inhibition of cell wall synthesis (cell wall-targeting antibiotics); Disruption of membrane/cell wall integrity (antimicrobial peptides/enzymes); Inhibition of biofilm formation; Immune recognition and activation