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Renewal of Skin Epidermal Stem Cells

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The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular cells,...

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Related Experiment Video

Updated: Jun 20, 2026

Cultivating a Three-dimensional Reconstructed Human Epidermis at a Large Scale

Cultivating a Three-dimensional Reconstructed Human Epidermis at a Large Scale

Published on: May 28, 2021

Making an epidermis.

Maranke I Koster¹

¹Department of Dermatology and Charles C Gates Regenerative Medicine and Stem Cell Biology Program, University of Colorado Denver, Aurora, Colorado 80045, USA. Maranke.Koster@ucdenver.edu

Annals of the New York Academy of Sciences

|August 19, 2009

Summary

This summary is machine-generated.

Epidermal stem cells maintain skin barrier function by controlling cell proliferation and differentiation. This review details the mechanisms governing epidermal stem cell behavior and skin development.

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Area of Science:

Dermatology
Cell Biology
Developmental Biology

Background:

The skin's epidermis acts as a crucial barrier against dehydration and environmental harm.
Epidermal stem cells in the basal layer generate keratinocytes that migrate outward.
Keratinocyte differentiation forms the epidermis's layered structure, culminating in dead, cornified cells.

Purpose of the Study:

To review the mechanisms regulating epidermal stem cell proliferation and differentiation.
To elucidate fundamental processes controlling epidermal morphogenesis and skin function.

Main Methods:

Literature review of current research on epidermal stem cells.
Analysis of molecular and cellular mechanisms governing keratinocyte development.

Main Results:

Detailed summary of known pathways controlling stem cell behavior.
Explanation of how these pathways influence epidermal layer formation.

Conclusions:

Understanding epidermal stem cell regulation is key to comprehending skin development and function.
This knowledge is vital for addressing skin barrier disorders and promoting skin health.