Bacterial macromolecules (Cutibacterium acnes)

Cutibacterium acnes (formerly Propionibacterium acnes) is a Gram-positive, anaerobic bacterium that is a primary commensal of human skin but plays a central role in the pathogenesis of acne vulgaris when it overproliferates within the pilosebaceous unit (StatPearls, 2023). The term bacterial macromolecules in this context refers to a broad collection of essential molecular structures within the organism, including the 30S and 50S ribosomal subunits, DNA gyrase, and various cell wall components, which serve as the primary targets for conventional antibiotic therapy (Microbiology and Molecular Biology Reviews, 2019). Drugs such as tetracyclines and macrolides exert their therapeutic effects by binding to these ribosomes to inhibit bacterial protein synthesis, while oxidizing agents like benzoyl peroxide act non-specifically by damaging bacterial proteins and membranes (Journal of Clinical and Aesthetic Dermatology, 2017). Targeting these macromolecules is essential for reducing the bacterial load and the subsequent production of pro-inflammatory mediators and lipases that contribute to skin lesions (Clinical Microbiology Reviews, 2013). However, the clinical utility of targeting these macromolecules is increasingly challenged by the emergence of resistant strains, often characterized by specific point mutations in the bacterial 23S rRNA or 16S rRNA genes (Journal of Dermatological Science, 2018).

Other names

Propionibacterium acnes macromoleculesC. acnes cellular componentsBacterial targets in acneCutibacterium acnes proteins and nucleic acids

Inhibition of the 50S ribosomal subunit to block protein synthesis; inhibition of the 30S ribosomal subunit to prevent aminoacyl-tRNA binding; non-specific oxidation of bacterial proteins and lipids; inhibition of DNA gyrase and topoisomerase IV to prevent DNA replication.