Cutibacterium acnes cellular proteins (C. acnes proteins)

Cutibacterium acnes cellular proteins represent the entire collection of proteins produced by the Gram-positive bacterium C. acnes, a primary inhabitant of the human skin microbiome. While often commensal, these proteins become pathogenic when the bacterium overproliferates within the pilosebaceous unit, leading to acne vulgaris. Key proteins include secreted lipases that break down sebum into irritating free fatty acids, and Christie-Atkins-Munch-Petersen (CAMP) factors which act as pore-forming toxins to trigger host immune responses (PMID: 21606188, 25104281). Pharmacological intervention typically targets these proteins collectively through antibiotics like clindamycin or tetracyclines, which inhibit the bacterial ribosome to prevent protein synthesis (StatPearls: Acne Vulgaris). Additionally, specific surface proteins are currently being explored as antigenic targets for acne vaccines to provide a more targeted immunological approach. However, the use of the term "cellular proteins" as a single target is technically incorrect as it encompasses thousands of distinct molecules with diverse functions, making it a broad therapeutic category rather than a specific molecular target.

Other names

Propionibacterium acnes proteinsC. acnes proteomeCutibacterium acnes antigens

Inhibition of bacterial protein synthesis by binding to the 30S or 50S ribosomal subunits; induction of oxidative stress leading to non-specific damage of bacterial proteins and membranes; inhibition of bacterial enzymes involved in fatty acid synthesis.