Keratin and epidermal cell surface structures

Keratin and epidermal cell surface structures encompass the structural proteins and adhesion complexes that maintain the mechanical integrity and barrier function of the skin's epidermis (StatPearls, NBK499838). This target group primarily includes the keratin intermediate filament network (e.g., KRT1, KRT5, KRT10, KRT14), which provides a scaffold for the cytoplasm of keratinocytes, and junctional structures like desmosomes that facilitate strong cell-to-cell adhesion through proteins such as desmogleins (UniProt, P14923). These components are essential for protecting the body against environmental stress, pathogens, and dehydration. In clinical pathology, these structures are the primary targets in autoimmune blistering diseases like pemphigus, where autoantibodies disrupt cell surface adhesion, and in genetic disorders like epidermolysis bullosa where mutations lead to skin fragility (StatPearls, NBK560501). Pharmacological management involves agents that modify these structures, such as keratolytics (e.g., salicylic acid) that promote the shedding of the cornified layer, retinoids that regulate keratin gene expression, and targeted biologics that prevent the immune-mediated destruction of cell surface junctions (NCBI, PMC7144685).

Other names

Epidermal structural proteinsKeratinocyte surface antigensDesmosomal proteinsCornified envelope componentsEpidermal cell surface antigens

Keratolysis (dissolution of the intercellular cement), modulation of keratinocyte differentiation and proliferation, and inhibition of autoantibody-mediated cell dissociation.