Skin keratin and cutaneous microbiota

Skin keratin and cutaneous microbiota represent the complex interface between the host's structural proteins and the diverse community of microorganisms inhabiting the skin surface (StatPearls, 2023; Nature Reviews Microbiology, 2018). Keratins are intermediate filament proteins that provide mechanical stability and barrier integrity to the epidermis, while the microbiota consists of bacteria, fungi, and viruses that play a crucial role in immune education and pathogen defense (NIH, 2022). This composite target is central to the pathogenesis of various dermatological conditions, including atopic dermatitis and acne, where barrier disruption and microbial dysbiosis occur simultaneously (Journal of Investigative Dermatology, 2020). Therapeutic interventions often aim to restore the physical barrier by modulating keratinocyte function or to rebalance the microbiome using antimicrobial or probiotic approaches (PubMed, 2021). Understanding the bidirectional interaction between host keratin expression and microbial colonization is essential for developing effective topical treatments. Consequently, this target is often addressed through multi-modal therapies that stabilize the skin's ecological and structural environment.

Other names

Skin barrier and microbiomeEpidermal keratin and skin floraCutaneous interfaceSkin surface ecosystem

The mechanism of action for drugs targeting this system involves the regulation of keratinocyte proliferation and differentiation to enhance barrier function, alongside the targeted reduction of pathogenic microbes or the promotion of commensal diversity to restore skin homeostasis (StatPearls, 2023; Nature Reviews Microbiology, 2018).