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Related Concept Videos

Sinusoidal Sources01:18

Sinusoidal Sources

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Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
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Purification of Hepatocytes and Sinusoidal Endothelial Cells from Mouse Liver Perfusion
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Liver sinusoid on a chip.

Yu Du1, Ning Li2, Mian Long2

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

Methods in Cell Biology
|July 25, 2018
PubMed
Summary
This summary is machine-generated.

This study developed a novel liver chip model using micro-engineering to mimic the liver sinusoid environment. The model successfully replicates hepatic cell interactions and immune responses, offering a new tool for liver research.

Keywords:
Co-cultureHepatic cellsLiver sinusoid chipMicrofluidicShear flow

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Area of Science:

  • Hepatology
  • Microfluidics
  • Bioengineering

Background:

  • The liver sinusoid is crucial for liver function, involving complex cellular interactions within a specific microenvironment.
  • Existing in vitro models often fail to fully replicate the liver's native architecture and cellular composition.

Purpose of the Study:

  • To engineer a microfluidic liver chip that recreates the liver sinusoidal microenvironment.
  • To investigate cellular interactions and immune responses within this engineered model.

Main Methods:

  • Utilized micro-engineering to integrate four primary hepatic cell types into a two-layer channel system with a porous membrane.
  • Incorporated shear flow to simulate blood flow in sinusoids and interstitial flow in the space of Disse.
  • Replicated neutrophil recruitment under lipopolysaccharide (LPS) stimulation.

Main Results:

  • The engineered liver chip successfully mimicked the sinusoidal cell composition and architecture.
  • Co-culture with non-parenchymal cells and shear flow enhanced conventional hepatocyte functions.
  • The model accurately replicated key immune responses, such as neutrophil recruitment.

Conclusions:

  • The developed liver chip serves as a valuable in vitro model for studying short-duration cellular interactions in a physiologically relevant liver microenvironment.
  • This model enhances the study of liver-specific functions and immune responses.
  • It provides a platform for investigating liver organoid dynamics.