Related Experiment Video
Updated: May 14, 2026

Generation and Culturing of Primary Human Keratinocytes from Adult Skin
Published on: December 22, 2017
Drug interactions with normal and TEN epidermal keratinocytes
Philippe Paquet1, Philippe Delvenne, Gerald E Pierard
1Department of Dermatopathology, Liège University Hospital, Unilab Lg, Liège, Belgium. p.paquet@chu.ulg.ac.be
Human epidermal keratinocytes (EKS) play a key role in drug metabolism, differing from liver cells. Understanding these processes may lead to new treatments for drug-induced toxic epidermal necrolysis (TEN).
Area of Science:
- Dermatology
- Pharmacology
- Toxicology
Background:
- Human epidermal keratinocytes (EKS) are involved in drug transport, detoxification, and activation.
- Drug metabolism in EKS involves uptake, biotransformation, and efflux steps.
- EKS possess distinct enzymes and transporters compared to hepatocytes.
Purpose of the Study:
- To review the mechanisms of drug metabolism in normal human epidermal keratinocytes (EKS).
- To highlight the role of EKS in drug-induced toxic epidermal necrolysis (TEN).
Main Methods:
- Review of scientific literature on drug metabolism in epidermal keratinocytes.
- Analysis of enzymatic and transport-associated proteins in EKS.
Main Results:
- Cytochrome P450 enzymes and flavin-containing mono-oxygenases are significantly involved in EKS drug metabolism.
- EKS exhibit unique metabolic pathways distinct from hepatic metabolism.
- EKS are implicated in the initial stages of drug-induced toxic epidermal necrolysis (TEN).
Conclusions:
- EKS play a crucial role in drug metabolism and are key players in TEN pathogenesis.
- Targeting metabolic disturbances in EKS could offer a promising therapeutic strategy for TEN.
Related Concept Videos
Cells of the Epidermis
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...
Renewal of Skin Epidermal Stem Cells
Drug Toxicity: Allergic Reactions
Clinical Applications of Epidermal Stem Cells
Pharmacokinetics: Drug–Drug Interactions
Layers of the Epidermis
Stratum Basale
Stratum basale, also known as the stratum germinativum, is the deepest layer of the epidermis. It is composed of a single layer of actively dividing cells called basal cells or basal keratinocytes. These cells constantly undergo cell division to replenish the upper layers of the epidermis. Additionally, melanocytes, which...
