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Related Experiment Video

Updated: Apr 21, 2026

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A 3D In Vitro Model of the Human Hepatobiliary Junction.

Ashley D Westerfield1,2, Katarzyna A Grzelak1,2, Katie Katsuyama3

  • 1Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|April 20, 2026
PubMed
Summary

Researchers developed a 3D model of the human hepatobiliary junction using organoid technology. This model accurately simulates bile flow and reveals cell-specific responses to hypoxia-reoxygenation, aiding liver disease research.

Keywords:
bilebile duct engineeringhepatobiliary organoidliver tissue engineeringorganoid

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Area of Science:

  • Hepatology and Regenerative Medicine
  • In Vitro Modeling
  • Biliary Physiology

Background:

  • Bile flow disruption causes liver pathologies.
  • Existing in vitro models poorly represent the hepatobiliary junction.
  • Coordinated hepatocyte and cholangiocyte function is crucial for bile transport.

Purpose of the Study:

  • To develop a 3D multicellular spheroid model of the human hepatobiliary junction.
  • To investigate bile flow dynamics and cellular responses to injury in vitro.
  • To provide a scalable platform for studying liver disease mechanisms.

Main Methods:

  • Co-aggregation of human hepatocytes and cholangiocytes with murine fibroblasts to form adult hepatobiliary organoids (aHBOs).
  • High-throughput imaging assays to visualize and quantify directional bile transport.
  • Fluorescent bile acid analogs and AI-assisted image analysis for dynamic assessment.

Main Results:

  • aHBOs successfully formed functional hepatobiliary junctions with directional bile flow.
  • Hypoxia-reoxygenation disrupted bile transport, showing distinct hepatocyte and cholangiocyte responses.
  • Hypoxia reversibly impaired hepatocyte canalicular function, while reoxygenation caused selective cholangiocyte death.

Conclusions:

  • The aHBO model effectively recapitulates human hepatobiliary junction function and injury responses.
  • Findings elucidate mechanisms of biliary dysfunction in hypoxic liver injury.
  • This platform facilitates discovery of therapeutics for cholestatic diseases and hypoxic liver injury.