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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,...
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The small intestine exhibits a unique histological structure that significantly enhances its function in digestion and nutrient absorption. These structures include circular folds, villi, and various specialized cells that collectively facilitate the digestion of food.
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Updated: May 8, 2026

Isolation and Characterization of Dendritic Cells and Macrophages from the Mouse Intestine
09:25

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Published on: May 21, 2012

Dendritic cell subsets in the intestinal lamina propria: ontogeny and function.

Emma K Persson1, Charlotte L Scott, Allan McI Mowat

  • 1Immunology Section, Department of Experimental Medical Science, Lund University, Lund, Sweden.

European Journal of Immunology
|August 23, 2013
PubMed
Summary

This review clarifies the distinct subsets of classical dendritic cells (cDCs) in the gut, differentiating them from other immune cells. Understanding these cDC subsets is crucial for regulating intestinal immune homeostasis and responses.

Keywords:
Antigen toleranceDendritic cellsIntestineLamina propriaMucosa

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Area of Science:

  • Immunology
  • Gastroenterology
  • Cell Biology

Background:

  • The intestinal mucosa constantly encounters foreign antigens from microbes and diet.
  • Dendritic cells (DCs) are critical for maintaining intestinal immune homeostasis, balancing tolerance and immunity.
  • Distinguishing classical DCs (cDCs) from other myeloid cells in the intestine has been challenging due to overlapping marker expression.

Purpose of the Study:

  • To review recent studies that differentiate intestinal cDC subsets from monocyte-derived cells.
  • To elucidate the phenotype and ontogeny of intestinal cDC subsets.
  • To highlight the distinct roles of these cDC subsets in mucosal immune regulation.

Main Methods:

  • Review of recent scientific literature on intestinal dendritic cells.
  • Analysis of cell surface marker expression (e.g., CD11c, CD11b, MHC class II).
  • Investigation of dendritic cell ontogeny and function in vivo.

Main Results:

  • Recent studies provide clearer definitions for intestinal cDC subsets.
  • Distinct phenotypes and developmental origins (ontogeny) of different cDC subsets have been identified.
  • Evidence suggests that these cDC subsets mediate specialized functions in regulating mucosal immunity.

Conclusions:

  • Accurate characterization of intestinal cDC subsets is essential for understanding mucosal immunity.
  • Specific cDC subsets play unique roles in immune tolerance and pathogen defense.
  • Further research into cDC subsets will advance strategies for managing intestinal immune disorders.