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Related Concept Videos

Adult Stem Cells01:33

Adult Stem Cells

Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously renew...
Stem Cell Niche01:26

Stem Cell Niche

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...
Renewal of Intestinal Stem Cells01:23

Renewal of Intestinal Stem Cells

The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the goblet,...
Renewal of Skin Epidermal Stem Cells01:12

Renewal of Skin Epidermal Stem Cells

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,...
Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...

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Related Experiment Video

Updated: Jul 13, 2026

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin
08:26

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin

Published on: March 31, 2011

Epithelial stem cells: turning over new leaves.

Cédric Blanpain1, Valerie Horsley, Elaine Fuchs

  • 1Howard Hughes Medical Institute, Laboratory of Mammalian Cell Biology and Development, The Rockefeller University, New York, NY 10021, USA.

Cell
|February 10, 2007
PubMed
Summary

Epithelial stem cells maintain tissues throughout life. Understanding their biology and signaling pathways is crucial for treating diseases and advancing regenerative medicine.

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Area of Science:

  • Stem cell biology
  • Developmental biology
  • Tissue regeneration

Background:

  • Epithelial tissues possess self-renewal capacity via stem and progenitor cells.
  • Epithelial stem cell specification involves developmental processes and epithelial-mesenchymal interactions.
  • Common signaling pathways regulate epithelial stem cell functions across diverse epithelia.

Purpose of the Study:

  • To review the fundamental biology of epithelial stem cells.
  • To highlight the role of signaling pathways in stem cell maintenance and differentiation.
  • To underscore the clinical relevance of epithelial stem cell research.

Main Methods:

  • Literature review of epithelial stem cell biology.
  • Analysis of signaling pathways governing stem cell behavior.
  • Discussion of clinical implications and regenerative medicine applications.

Main Results:

  • Epithelial stem cells are critical for tissue homeostasis and repair.
  • Shared signaling pathways control key stem cell processes: maintenance, activation, lineage determination, and differentiation.
  • Dysregulation of these pathways is linked to human diseases, notably cancer.

Conclusions:

  • Epithelial stem cell biology is a vital area for understanding tissue regeneration and disease.
  • Targeting common signaling pathways offers therapeutic potential for various human disorders.
  • Further research into epithelial stem cells will drive advancements in medicine and regenerative therapies.