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Synergistic Combination of Additive One- and Two-Photon Polymerization Printing Methods to Fabricate 3D

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This study presents a novel fabrication method for organ-on-a-chip models, enabling the creation of perfusable vascular networks for advanced tissue engineering and drug screening. The developed angiogenesis-on-a-chip platform successfully supports endothelial cell sprouting, advancing personalized medicine.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Microfluidics

Background:

  • Organ-on-a-chip (OOC) models are crucial for personalized medicine and reducing animal testing.
  • Fabricating perfusable chips with vascular networks is essential for long-term 3D cell cultures in OOC systems.

Purpose of the Study:

  • To develop a versatile microfluidic chip fabrication method for creating perfusable vascular networks.
  • To demonstrate the capability of the chip to support endothelial cell (EC) angiogenesis for vascular studies and drug screening.

Main Methods:

  • A two-step fabrication approach combining one- and two-photon polymerization (2PP).
  • Incorporation of a 2PP-printed sealing contour for leak-free chip bonding.
  • Design of channel-separating-pillars to facilitate EC migration into extracellular matrix.

Main Results:

  • The microfluidic chip successfully supported endothelial cell (EC) angiogenesis.
  • The developed angiogenesis-on-a-chip model demonstrated EC sprouting in response to angiogenic factors.
  • The fabrication method allows for customization of OOC devices for diverse biological applications.

Conclusions:

  • The developed fabrication technique provides a versatile platform for vascular studies and drug screening.
  • This OOC model advances the investigation of complex tissue interactions and personalized medicine.
  • The precise fabrication method enhances the relevance of OOC systems in biological research.