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Related Concept Videos

Development of Blood Vessels01:07

Development of Blood Vessels

The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...

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Related Experiment Video

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Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip
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Protocol for fabricating a vascularized bile duct-on-a-chip.

Chaoyang Song1,2, Mengqi Zhu1,3, Rebecca G Wells4,5,6

  • 1Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.

Biophysics Reports
|January 1, 2026
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Summary

Researchers developed a vascularized bile duct-on-a-chip (VBDOC) to model cholestatic liver diseases. This 3D model mimics the vascular-biliary interface, aiding disease study and drug screening for conditions like primary sclerosing cholangitis (PSC).

Keywords:
CholangiopathyCholestatic liver diseasesOrgan-on-a-chipVascularized

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Area of Science:

  • Hepatology and Regenerative Medicine
  • Biomaterials and Tissue Engineering
  • Microfluidics and Organ-on-a-Chip Technology

Background:

  • Cholestatic liver diseases, including primary sclerosing cholangitis (PSC), present significant clinical challenges due to unknown pathogenesis and limited in vitro models.
  • The vascular-biliary interface is critical, as cholangiocyte injury disrupts barrier function and promotes inflammation and fibrosis, leading to liver damage.

Purpose of the Study:

  • To develop a detailed protocol for fabricating a human vascularized bile duct-on-a-chip (VBDOC).
  • To create a functional 3D model that recapitulates the vascular-biliary interface for studying cholestatic liver diseases.
  • To provide a tool for disease modeling and drug screening in vitro.

Main Methods:

  • Fabrication of a 3D VBDOC device integrating vascular and biliary channels with mesenchymal cells in a collagen gel.
  • Characterization of cholangiocyte polarity, barrier function, and physiological responses within the VBDOC.
  • Manipulation of microenvironmental factors, including matrix stiffness and luminal shear flow.

Main Results:

  • The VBDOC successfully models the vascular-biliary interface structurally and functionally.
  • The device maintains cholangiocyte polarity and barrier integrity, mimicking large bile duct physiology.
  • The VBDOC allows for controlled modulation of mechanical microenvironmental components.

Conclusions:

  • The developed VBDOC offers a robust platform for studying cholestatic liver diseases.
  • This practical workflow enables researchers to fabricate and utilize the VBDOC for in vitro disease modeling and drug discovery.
  • The VBDOC holds promise for advancing research into liver diseases characterized by bile duct dysfunction.