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Microfluidic Model to Mimic Initial Event of Neovascularization
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Microfluidic Model to Mimic Initial Event of Neovascularization.

Ping Zhao1, Xing Zhang1, Xiao Liu2

  • 1Beijing Advanced Innovation Centre for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Chinese Education Ministry, School of Biological Science and Medical Engineering, Beihang University.

Journal of Visualized Experiments : Jove
|April 26, 2021
PubMed
Summary

Researchers developed a novel 3D model to simulate the initial stages of neovascularization. This model replicates the physiological microenvironment, aiding in understanding blood vessel formation and enabling drug screening.

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Area of Science:

  • Biomedical Engineering
  • Cell Biology
  • Physiology

Background:

  • Neovascularization initiation differs from later stages.
  • Existing models lack simulation of early vascular microenvironments.
  • Endothelial cells (ECs) face unique biomechanical conditions initially.

Purpose of the Study:

  • To develop an in vitro 3D model mimicking the initial event of neovascularization (MIEN).
  • To recapitulate the physiological microenvironment of early neovascularization.
  • To provide a platform for studying neovascularization mechanisms and drug screening.

Main Methods:

  • Reconstruction of an in vitro 3D model (MIEN).
  • Utilized a microfluidic sprouting chip with an automated circulation system.
  • Simulated sprouting in a perfusable microchannel coated with endothelium.

Main Results:

  • Successfully formed a functional, perfusable microchannel.
  • Recreated physiological microenvironmental conditions including high shear stress, transendothelial flow, and VEGF gradients.
  • Demonstrated simulation of the initial neovascularization process.

Conclusions:

  • The MIEN model effectively mimics early neovascularization.
  • This model offers a valuable tool for studying neovascularization mechanisms.
  • It shows potential for low-cost drug screening and toxicology applications.