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Related Experiment Video

Updated: Mar 22, 2026

3D Human Myocardial Tissue Generation Using Melt Electrospinning Writing of Polycaprolactone Scaffolds and hiPSC-Derived Cardiac Cells
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Biomimetic Polymers for Cardiac Tissue Engineering.

Brisa Peña1,2, Valentina Martinelli1,2, Mark Jeong1,2

  • 1Cardiovascular Institute and ‡Bioengineering Department, University of Colorado-Denver , Aurora, Colorado, United States.

Biomacromolecules
|April 14, 2016
PubMed
Summary
This summary is machine-generated.

A novel injectable biomimetic Reverse Thermal Gel (RTG) supports cardiomyocyte survival and function. This cell therapy platform shows promise for treating heart failure by enabling sustained viability of transplanted cardiomyocytes.

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Area of Science:

  • Biomedical Engineering
  • Regenerative Medicine
  • Cardiovascular Research

Background:

  • Heart failure involves progressive cardiomyocyte dysfunction and death, posing a significant clinical challenge.
  • Current cell-based therapies for heart failure face limitations in transplanted cell survival and integration.
  • Developing supportive biomaterials is crucial for enhancing the efficacy of cardiomyocyte transplantation.

Purpose of the Study:

  • To engineer an injectable Reverse Thermal Gel (RTG) biomaterial for sustained cardiomyocyte survival and function.
  • To evaluate the biocompatibility and supportive capacity of RTG for both neonatal and adult rat ventricular myocytes.
  • To assess the potential of RTG-based cell therapy for minimally invasive treatment of heart failure.

Main Methods:

  • Development of an injectable RTG biopolymer that transitions from solution to gel at body temperature.
  • Functionalization of RTG with biomolecules (poly-l-lysine, laminin) to enhance cell adhesion and survival.
  • Culture of neonatal rat ventricular myocytes (NRVM) and adult rat ventricular myocytes (ARVM) in 3D RTG and 2D control conditions.

Main Results:

  • RTG-lysine promoted NRVM spreading and formation of functional, heart-like syncytia.
  • Beating cardiomyocytes were observed in both RTG and RTG-lysine conditions after 21 days.
  • Over 50% of ARVMs maintained viability and cardiac phenotype in RTG-laminin after 8 days.

Conclusions:

  • The biomimetic RTG is a suitable platform for supporting cardiomyocyte viability and function in a 3D environment.
  • Biomolecule functionalization of RTG can enhance cell spreading, syncytia formation, and long-term survival.
  • This RTG-based cell therapy holds significant potential for minimally invasive treatment of heart failure through enhanced cardiomyocyte transplantation.