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In vitro functional gut-like organ formation from mouse embryonic stem cells
Takatsugu Yamada1, Masahide Yoshikawa, Miyako Takaki
1Division of Developmental Biology, Department of Parasitology, Nara Medical University, Nara, Japan. highnet@nmu-gw.naramed-u.ac.jp
Stem Cells (Dayton, Ohio)
|January 18, 2002
Summary
Embryonic stem cells can form functional gut-like tissues in vitro. These tissues exhibit electrical activity and contractions, mimicking the gastrointestinal tract for research on gut development and motility disorders.
Area of Science:
- Stem cell biology
- Developmental biology
- Gastrointestinal physiology
Background:
- Embryonic stem (ES) cells possess pluripotency, differentiating into various cell types.
- ES cells can generate functional gut-like units with mechanical activity in vitro.
- These units form 3D structures with lumens, exhibiting spontaneous contractions and peristalsis.
Purpose of the Study:
- To investigate the electrophysiological properties of ES cell-derived contracting clusters.
- To examine the morphological characteristics of these ES cell-derived gut-like structures.
Main Methods:
- Extracellular recordings to assess electrical activity.
- Immunohistochemistry and electron microscopy for morphological and cellular analysis.
Main Results:
- Rhythmic contractions correlated with electrical slow waves.
- Peristalsis was associated with regular slow waves and spike action potentials.
- Immunoreactivity confirmed interstitial cells of Cajal (ICC) networks and enteric neurons in innervated structures.
Conclusions:
- ES cells differentiate into functional gut-like organs in vitro.
- These structures possess physiological and morphological traits of the gastrointestinal tract.
- This model is valuable for studying GI motility, gut development, and motility disorders.