Keratinocyte
Keratinocyte — The predominant cell type in the epidermis, commonly used in peptide wound healing and skin biology research models.
What Is a Keratinocyte?
A keratinocyte is the predominant cell type of the epidermis (~90%), responsible for producing keratin, forming the skin barrier, and participating in innate immune defense. Keratinocytes produce AMPs (defensins, LL-37) and are primary targets of cosmeceutical peptides (GHK-Cu, collagen peptides).
Peptide Context
- AMP production: Keratinocytes upregulate cathelicidin and defensin expression in response to injury and infection
- Wound healing: Keratinocyte migration and proliferation assessed in scratch assays
- HaCaT cells: Immortalized human keratinocyte cell line widely used for peptide studies
Frequently Asked Questions
What is Keratinocyte?
The predominant cell type in the epidermis, commonly used in peptide wound healing and skin biology research models.
Why is Keratinocyte important in peptide research?
Keratinocyte is a fundamental concept in biology as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.