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The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
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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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Isolation and Culture of Adult Epithelial Stem Cells from Human Skin
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Epithelial stem cells: an epigenetic and Wnt-centric perspective.

Bingnan Gu1, Kazuhide Watanabe, Xing Dai

  • 1Department of Biological Chemistry, School of Medicine, University of California, Irvine, California 92697-1700, USA.

Journal of Cellular Biochemistry
|June 22, 2010
PubMed
Summary

Epigenetic mechanisms regulate mammalian epithelial stem cells for self-renewal and differentiation. Recent studies highlight the Wnt pathway

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Last Updated: Jun 12, 2026

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin
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Area of Science:

  • Stem cell biology
  • Epigenetics
  • Developmental biology

Background:

  • Mammalian epithelial stem cells possess self-renewal and differentiation capabilities.
  • These stem cells are crucial for tissue development and homeostasis.
  • Epigenetic regulation plays a vital role in controlling stem cell behavior.

Purpose of the Study:

  • To review the role of epigenetic control mechanisms in mammalian epithelial stem cell development and homeostasis.
  • To provide an update on recent findings regarding the Wnt signaling pathway in these cells.
  • To explore the connection between Wnt signaling and chromatin regulation in epithelial stem cells.

Main Methods:

  • Literature review of studies on epithelial stem cells.
  • Analysis of research on epigenetic modifications.
  • Examination of Wnt signaling pathway involvement.

Main Results:

  • Epigenetic mechanisms are implicated in epithelial stem cell development and homeostasis.
  • Canonical Wnt signaling is increasingly recognized for its role.
  • A link exists between Wnt pathway activity and chromatin regulation in these stem cells.

Conclusions:

  • Epigenetic regulation is fundamental to mammalian epithelial stem cell function.
  • The Wnt pathway is a key player interacting with chromatin.
  • Future research in epigenetics and epigenomics of these cells is expected to grow significantly.