Keratinocyte

Keratinocyte refers to the predominant cell type in the epidermis, responsible for forming protective skin barriers through keratin production and regulated differentiation. These cells participate in wound healing, immune signalling, and barrier maintenance, making them important in dermatology research and toxicology testing.

The pharmaceutical industry uses keratinocyte models to evaluate dermatological therapeutics, topical formulations, and skin irritation potential. In vitro keratinocyte cultures and reconstructed human epidermis models support safety testing and mechanism studies, reducing reliance on animal testing. Immunology research examines keratinocyte cytokine responses relevant to inflammatory skin diseases such as psoriasis and eczema. As skin models improve through three-dimensional culture systems and organ-on-chip platforms, keratinocyte-based testing continues supporting more predictive and ethical development approaches for both dermatology therapeutics and general safety assessment.