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Stem Cells: All that Is Solid Melts into Air.

Maartje van der Heijden1, Louis Vermeulen1

  • 1Laboratory for Experimental Oncology and Radiobiology (LEXOR), Center for Experimental and Molecular Medicine (CEMM), Cancer Center Amsterdam (CCA), Amsterdam Institute for Gastroenterology & Metabolism (AGM), and Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands.

Cell Stem Cell
|July 8, 2017
PubMed
Summary
This summary is machine-generated.

Intestinal stem cells can regenerate damaged tissue. New research shows enteroendocrine cells can also act as reserve stem cells, revealing key molecular mechanisms of intestinal repair and plasticity.

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Area of Science:

  • Gastroenterology and Hepatology
  • Stem Cell Biology
  • Developmental Biology

Background:

  • The intestinal epithelium possesses remarkable regenerative capacity, with various cell types capable of repopulating the stem cell niche after injury.
  • Understanding the plasticity of differentiated intestinal cells and identifying reserve stem cell populations are crucial for regenerative medicine.

Purpose of the Study:

  • To investigate the potential of enteroendocrine cells to act as reserve stem cells in the intestinal epithelium.
  • To elucidate the molecular mechanisms driving cellular plasticity and stemness in the intestine.

Main Methods:

  • Utilized lineage tracing in mouse models to track cell fate after injury.
  • Employed single-cell RNA sequencing to analyze gene expression changes in response to damage.
  • Performed functional assays to assess the regenerative capacity of enteroendocrine cells.

Main Results:

  • Demonstrated that enteroendocrine cells can dedifferentiate and proliferate to replenish the stem cell pool following intestinal injury.
  • Identified specific signaling pathways and transcription factors that mediate this reserve stem cell function.
  • Highlighted the significant cellular plasticity inherent in the intestinal epithelium.

Conclusions:

  • Enteroendocrine cells represent a previously unrecognized reserve stem cell population in the intestine.
  • The findings provide critical insights into the molecular basis of intestinal regeneration and cellular plasticity.
  • This research opens new avenues for therapeutic strategies targeting intestinal repair.