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Related Experiment Video

Updated: May 14, 2026

Capillary Force Lithography for Cardiac Tissue Engineering

Capillary Force Lithography for Cardiac Tissue Engineering

Published on: June 10, 2014

Comparing fabrication techniques for engineered cardiac tissue.

Rachel Hatano¹, Ariell M Smith², Ritu Raman^3,4

¹Graduate Program in Bioengineering and Small-scale Technologies, University of California, Merced, USA.

Journal of Biomedical Materials Research. Part A

|May 16, 2024

Summary

This summary is machine-generated.

This study compares three methods for building 3D heart tissue using human induced pluripotent stem cell-derived cardiomyocytes. Muscle strips and rings show superior cell alignment and elongation, crucial for synchronous contraction in engineered cardiac tissue.

Keywords:

cardiomyocytes cardiosphere cell alignment cell assembly muscle strip pluripotent stem cells tissue engineering

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Last Updated: May 14, 2026

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3D Human Myocardial Tissue Generation Using Melt Electrospinning Writing of Polycaprolactone Scaffolds and hiPSC-Derived Cardiac Cells

Published on: March 28, 2025

Area of Science:

Biomedical Engineering
Stem Cell Biology
Cardiovascular Research

Background:

Tissue engineering aims to create functional in vitro models for drug testing and disease modeling.
Generating synchronously contracting 3D heart tissue requires aligned cardiac cells (cardiomyocytes).
A direct comparison of fabrication methods using a consistent cell source is needed.

Purpose of the Study:

To compare the efficacy of three distinct fabrication methods for assembling human induced pluripotent stem cell-derived cardiomyocytes into functional 3D heart tissue.
To evaluate cell alignment, elongation, and tissue stability across different methods.

Main Methods:

Human induced pluripotent stem cells (hiPSCs) were differentiated into cardiomyocytes (CMs).
Three fabrication methods were employed: cardiospheres, muscle rings, and muscle strips.
Quantification of cell alignment and elongation was performed for each method.

Main Results:

All three methods successfully generated stable, compacted hiPSC-derived CM tissue for at least two weeks.
Muscle strips (55%) and muscle rings (50%) demonstrated significantly higher cell alignment compared to cardiospheres (35%).
Muscle strips showed the greatest cardiomyocyte elongation (factor 2.0) compared to muscle rings (1.5) and cardiospheres (1.2).

Conclusions:

This study provides the first direct comparison of cardiosphere, muscle ring, and muscle strip fabrication techniques for hiPSC-derived cardiac tissue.
Muscle strip and muscle ring methods offer superior cell alignment and elongation, key factors for developing functional engineered heart tissue.
These findings guide the selection of fabrication methods for future cardiac tissue engineering applications.