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In Vitro Cultivation Techniques for Modeling Liver Organogenesis, Building Assembloids, and Designing Synthetic Tissues using Human Cell Lines

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Epithelial Morphogenesis during Liver Development.

Naoki Tanimizu¹, Toshihiro Mitaka¹

¹Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo 060-8556, Japan.

Cold Spring Harbor Perspectives in Biology

|February 19, 2017

Summary

Liver stem cells differentiate into specialized cells and form complex 3D structures during organ development. This research explores liver organogenesis using fetal liver stem/progenitor cells (LPCs) as a model system.

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Area of Science:

Developmental Biology
Stem Cell Biology
Hepatology

Background:

Tissue stem/progenitor cells are crucial for generating diverse cell types and establishing functional 3D tissue architectures during organ development.
The liver, comprising hepatocytes and cholangiocytes derived from fetal liver stem/progenitor cells (LPCs), serves as a model for studying organogenesis.
Understanding liver organogenesis involves studying cell differentiation and the formation of complex 3D tissue structures.

Purpose of the Study:

To investigate the differentiation potential of liver stem/progenitor cells (LPCs) into hepatocytes and cholangiocytes.
To explore the molecular mechanisms underlying liver organogenesis and 3D tissue formation.
To utilize in vitro culture systems and advanced imaging techniques to study liver development.

Main Methods:

Analysis of human genetic diseases and mutant mouse models to identify key molecules in liver organogenesis.
In vitro differentiation of liver stem/progenitor cells (LPCs) into hepatocytes and cholangiocytes.
Application of advanced imaging techniques to visualize 3D epithelial morphogenesis during liver development.

Main Results:

Identified crucial molecules regulating liver organogenesis through genetic analyses.
Demonstrated the capacity of LPCs to differentiate into both hepatocytes and cholangiocytes in vitro.
Revealed insights into 3D epithelial morphogenesis during liver development using recent technical advances.

Conclusions:

The liver is an excellent model for understanding how stem/progenitor cells differentiate and establish 3D tissue architectures.
Further research into liver organogenesis can elucidate fundamental principles of stem cell differentiation and tissue development.
This study highlights the importance of LPCs in forming the complex cellular structures of the liver.