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Renewal of Intestinal Stem Cells

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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,...

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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.
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The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...

Role Of Notch Signalling In Intestinal Stem Cell Renewal

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Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
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Related Experiment Video

Updated: Jun 16, 2026

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models

Published on: November 21, 2015

A focus on parietal cells as a renewing cell population.

World Journal of Gastroenterology

|February 4, 2010

Summary

Gastric parietal cells are not static but continuously renew from stem cells in the gastric glands. This dynamic process, crucial for gastric health, influences stem cell programs and impacts diseases like gastritis and ulcers.

Area of Science:

Gastroenterology and Cell Biology
Stem Cell Biology
Epithelial Cell Lineage Dynamics

Background:

Parietal cells, responsible for acid secretion, were previously considered static.
Recent studies reveal parietal cells are part of a continuously renewing epithelial cell lineage.

Discussion:

Stem cells in the gastric gland isthmus generate parietal cell progenitors (prepit, preneck, preparietal).
Parietal cell formation involves specific morphological changes and takes approximately 2 days.
Mature parietal cells have a lifespan of about 54 days (in mice) before degeneration.

Key Insights:

Parietal cells actively regulate stem/progenitor cell proliferation and differentiation.
The renewal process is essential for maintaining gastric gland homeostasis.

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Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation

Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation

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Improved Swiss-rolling Technique for Intestinal Tissue Preparation for Immunohistochemical and Immunofluorescent Analyses

Improved Swiss-rolling Technique for Intestinal Tissue Preparation for Immunohistochemical and Immunofluorescent Analyses

Published on: July 13, 2016

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Last Updated: Jun 16, 2026

Protocols for Analyzing the Role of Paneth Cells in Regenerating the Murine Intestine using Conditional Cre-lox Mouse Models

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Published on: November 21, 2015

Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation

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Published on: August 19, 2020

Improved Swiss-rolling Technique for Intestinal Tissue Preparation for Immunohistochemical and Immunofluorescent Analyses

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Published on: July 13, 2016

Alterations in parietal cell dynamics are linked to gastric disorders.

Outlook:

Further research into the genetic regulation of parietal cell development is needed.
Understanding parietal cell dynamics can inform new therapeutic strategies for atrophic gastritis, peptic ulcers, and gastric cancer.