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Related Experiment Video

Updated: May 9, 2026

Generation and Quantitative Characterization of Functional and Polarized Biliary Epithelial Cysts
09:55

Generation and Quantitative Characterization of Functional and Polarized Biliary Epithelial Cysts

Published on: May 16, 2020

Modeling Disease-Relevant Bile Duct Morphogenesis Defects in a Tunable In Vitro System.

Chloe Caenen-Braz1, Emmanuelle De Bressy De Guast1, Lana Al Haj Hassan1

  • 1Université Paris-Saclay, Inserm, Physiopathogenèse et Traitement des Maladies du Foie, 94800 Villejuif, France.

ACS Biomaterials Science & Engineering
|May 8, 2026
PubMed
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This summary is machine-generated.

Researchers developed a new 3D model to study bile duct development and Alagille syndrome. This platform precisely controls cholangiocyte growth, revealing Notch signaling

Area of Science:

  • Developmental Biology
  • Cell Biology
  • Regenerative Medicine

Background:

  • Biliary tubulogenesis is crucial for liver function but challenging to study in vivo.
  • Existing 3D models lack control over duct development, hindering mechanistic insights.
  • Alagille syndrome involves defects in bile duct formation, necessitating better research models.

Purpose of the Study:

  • To develop a novel micropattern-based in vitro platform for studying biliary tubulogenesis.
  • To investigate the role of Notch signaling and epidermal growth factor (EGF) in bile duct morphogenesis.
  • To model key features of Alagille syndrome using this platform.

Main Methods:

  • Utilized a micropattern-based platform to constrain cholangiocyte growth in defined geometries.
Keywords:
Alagille syndromebile ductcell polaritymicropatternstubulogenesis

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Last Updated: May 9, 2026

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  • Introduced Jag1 mutations or Notch inhibition (CB-103) to mimic Alagille syndrome.
  • Performed quantitative morphometric analysis, time-lapse imaging, and coculture with HUVECs.

    • Main Results:

    • The platform enabled reproducible tubular structure formation with controlled folding, lumenization, and branching.
    • Notch inhibition recapitulated Alagille syndrome features: reduced tube width, impaired folding, and defective branching.
    • EGF promoted folding and proliferation but did not rescue branching defects; Notch activity is essential for tube expansion.

    Conclusions:

    • The micropattern platform provides a powerful tool for quantitative analysis of bile duct development.
    • Notch signaling is critical for the sequential folding-expansion cycle in tube formation.
    • This system facilitates the study of developmental defects and exploration of regenerative strategies for biliary disorders.