Bioengineering a Humanized Acne Microenvironment Model: Proteomics Analysis of Host Responses to Propionibacterium Acnes Infection In Vivo

The study employed a bioengineering approach to create a humanized acne microenvironment model using a tissue chamber integrated with a dermis-based cell-trapped system (DBCTS) to mimic in vivo acne lesions. Human sebocyte cell lines were grown in DBCTS and implanted into ICR mice, followed by injection of Propionibacterium acnes to induce an immune response. The model successfully detected infiltrated immune cells and elevated levels of the proinflammatory cytokine MIP-2. Proteomics analysis identified 13 proteins in the tissue chamber fluids, with altered concentrations of four proteins after P. acnes infection. This bioengineered model provided a novel platform for studying host interactions with P. acnes and screening potential anti-acne treatments.