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Related Experiment Video

Updated: Apr 19, 2026

Tissue Engineering of the Intestine in a Murine Model
08:45

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Published on: December 1, 2012

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Smooth muscle strips for intestinal tissue engineering.

Christopher M Walthers1, Min Lee2, Benjamin M Wu3

  • 1Department of Bioengineering, University of California Los Angeles, Los Angeles, California, United States of America.

Plos One
|December 9, 2014
PubMed
Summary
This summary is machine-generated.

Maintaining native smooth muscle organization in cultured strips, not dissociated cells, successfully produced functional smooth muscle for engineered intestine applications. This approach preserved key cellular markers and contractile function.

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Area of Science:

  • Biomedical Engineering
  • Tissue Engineering
  • Gastroenterology

Background:

  • Functionally contracting smooth muscle is critical for engineered intestine but challenging to replicate in vitro.
  • Current methods often fail to maintain native smooth muscle organization and function.

Purpose of the Study:

  • To develop a method for producing contracting smooth muscle in vitro by preserving native smooth muscle organization.
  • To compare the viability and function of intact smooth muscle strips versus dissociated smooth muscle cells in culture.

Main Methods:

  • Cultured intact smooth muscle strips and dissociated smooth muscle cells for 14 days.
  • Assessed smooth muscle maturity markers, enteric neural and glial cell presence, and intracellular calcium fluctuations.
  • Implanted smooth muscle strip constructs onto polycaprolactone scaffolds in omentum for 14 days.

Main Results:

  • Dissociated cells lost smooth muscle maturity markers and enteric neural/glial cells.
  • Cultured smooth muscle strips maintained neural and glial markers and exhibited periodic contractions.
  • Smooth muscle strips showed regular intracellular calcium fluctuations, unlike dissociated cells.
  • Implanted constructs expressed high levels of smooth muscle maturity and enteric neural/glial markers.

Conclusions:

  • Intact smooth muscle strips retain native organization and function in culture, unlike dissociated cells.
  • This method is promising for generating functional smooth muscle components for engineered intestine.
  • Smooth muscle strips represent a viable strategy for advancing intestinal tissue engineering.