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Related Experiment Videos

Isolation of mesenchymal stem cells from human vermiform appendix.

Paolo De Coppi1, Michela Pozzobon, Martina Piccoli

  • 1Laboratorio Trapianto del Midollo Osseo and Banca del Sangue di Cordone Ombelicale, Dipartimento di Oncoematologia Pediatrica, Padova, Italy. pdecoppi@hotmail.com

The Journal of Surgical Research
|May 3, 2006
PubMed
Summary

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Mesenchymal stem cells (MSCs) were successfully isolated from normal human appendices. These appendix-derived MSCs can differentiate into bone, fat, and muscle cells, suggesting a novel role for the appendix in immunity and regeneration.

Area of Science:

  • Stem cell biology
  • Immunology
  • Regenerative Medicine

Background:

  • Pluripotent stem cells are found outside bone marrow.
  • The appendix plays a role in mucosal gut immunity.
  • Hematopoietic progenitors have been isolated from appendices.

Purpose of the Study:

  • To investigate the presence and characteristics of mesenchymal stem cells in normal human appendices.
  • To explore the differentiation potential of appendix-derived mesenchymal stem cells (ADMCs).

Main Methods:

  • Non-inflamed appendices were cultured to obtain adherent cells.
  • Immunohistochemistry, cytochemistry, PCR, and cytofluorimetry were used for analysis.
  • ADMCs were cultured under osteogenic, adipogenic, and myogenic conditions.

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Main Results:

  • Mesenchymal stem cells were successfully isolated from non-inflamed appendices.
  • Appendix-derived MSCs differentiated into osteoblasts, adipocytes, and myotubes.
  • Specific gene and protein markers confirmed differentiation into respective lineages.

Conclusions:

  • Mesenchymal stem cells can be isolated from normal pediatric and adult appendices.
  • This discovery may advance understanding of intestinal immune system maturation.
  • It suggests a new physiological role for the human vermiform appendix.