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Related Experiment Video

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Capillary Force Lithography for Cardiac Tissue Engineering
10:09

Capillary Force Lithography for Cardiac Tissue Engineering

Published on: June 10, 2014

11.7K

Capillary force lithography for cardiac tissue engineering.

Jesse Macadangdang1, Hyun Jung Lee1, Daniel Carson1

  • 1Department of Bioengineering, University of Washington.

Journal of Visualized Experiments : Jove
|June 26, 2014
PubMed
Summary

Researchers developed scalable nanopatterning methods to create aligned cardiac cell scaffolds. These anisotropically nanofabricated substrata mimic the heart's extracellular matrix, advancing cardiac tissue engineering and cell function studies.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Nanotechnology

Background:

  • Cardiovascular disease is a leading global cause of death.
  • Cardiac tissue engineering aims to regenerate heart tissue and create in vitro models.
  • Mimicking the heart's complex extracellular matrix (ECM) at the nanoscale is challenging but crucial for functional tissue development.

Purpose of the Study:

  • To develop reproducible, cost-effective, and scalable nanopatterning processes for cardiac cell alignment.
  • To create anisotropically nanofabricated substrata (ANFS) that mimic native cardiac ECM structure and stiffness.
  • To investigate the impact of nanotopography on cardiac cell morphology and function.

Main Methods:

  • Fabrication of a nanopatterned silicon master.
  • Creation of a polyurethane acrylate (PUA) mold from the master.
  • Patterning of poly(lactide-co-glycolide) (PLGA) or polyurethane (PU) hydrogels using capillary force lithography (CFL).
  • UV-assisted curing for PU and solvent-mediated embossing for PLGA.

Main Results:

  • Development of two scalable and reproducible nanopatterning processes for creating ANFS.
  • ANFS successfully mimic the aligned fibrous structure of the cardiac ECM.
  • Primary cells, including neonatal rat ventricular myocytes and human pluripotent stem cell-derived cardiomyocytes, can be cultured on the ANFS.

Conclusions:

  • The developed ANFS provide a promising platform for studying nanotopography's role in cardiac cell behavior.
  • These methods offer a scalable and cost-effective approach to fabricating biomimetic scaffolds for cardiac tissue engineering.
  • The technology facilitates the creation of high-fidelity cardiac tissue models for research and therapeutic development.