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3D Human Myocardial Tissue Generation Using Melt Electrospinning Writing of Polycaprolactone Scaffolds and hiPSC-Derived Cardiac Cells
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Electrospun biocomposite nanofibrous patch for cardiac tissue engineering.

Molamma P Prabhakaran1, Dan Kai, Laleh Ghasemi-Mobarakeh

  • 1Health Care and Energy Materials Laboratory, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore. nnimpp@nus.edu.sg

Biomedical Materials (Bristol, England)
|August 5, 2011
PubMed
Summary

This study explores a novel biomimetic cardiac patch made from poly(dl-lactide-co-glycolide)/gelatin nanofibers. The scaffold supports cardiomyocyte growth and function, offering potential for heart repair after myocardial infarction.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cardiovascular Research

Background:

  • Myocardial infarction (MI) leads to significant cardiac dysfunction.
  • Effective cardiac patches require biomimetic properties matching native heart tissue.
  • Current treatments for MI have limitations in restoring cardiac function.

Purpose of the Study:

  • To evaluate a composite nanofibrous scaffold of poly(dl-lactide-co-glycolide)/gelatin (PLGA/Gel) as a cardiac patch.
  • To assess the scaffold's ability to support cardiomyocyte growth and function.
  • To investigate the potential of PLGA/Gel scaffolds for myocardial repair.

Main Methods:

  • Fabrication of electrospun PLGA and PLGA/Gel nanofibers.
  • Characterization using Fourier transform infrared spectroscopy, scanning electron microscopy, and tensile measurements.
  • In vitro biocompatibility studies with cardiomyocytes, assessing functional protein expression.

Main Results:

  • PLGA/Gel nanofibers exhibited suitable chemical and mechanical properties.
  • Cardiomyocytes cultured on PLGA/Gel scaffolds expressed cardiac-specific proteins (alpha-actinin, troponin I).
  • Demonstrated successful integration and function of cardiomyocytes on the nanofibrous scaffold.

Conclusions:

  • Electrospun PLGA/Gel nanofibers show promise as a biomimetic cardiac patch.
  • The scaffold provides bio-mechanical support for injured myocardium.
  • Potential substrate for inducing endogenous cardiomyocyte proliferation to improve cardiac remodeling and reduce dysfunction.