Alignment of human cardiomyocytes on laser patterned biphasic core/shell nanowire assemblies

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Cardiovascular Engineering

Background:

• Current end-stage heart failure treatments like transplantation and artificial hearts have limitations, including donor shortages and complications.
• Myocardial regenerative approaches are crucial for replacing damaged heart tissue, addressing limitations of cell transplantation.
• Tissue engineering aims to create contractile myocardial tissue mimicking the native extracellular matrix for cardiomyocyte guidance.

Purpose of the Study:

• To investigate the cellular adhesion and alignment of human cardiomyocytes on laser-patterned nanowires.
• To assess the biocompatibility of nanostructured surfaces for myocardial tissue engineering.
• To evaluate the potential of laser-patterned surfaces for guiding cardiomyocyte growth and orientation.

Main Methods:

• Cultivation of human cardiomyocytes on laser-patterned and unmodified nanowires.
• Investigation of cellular adhesion and alignment on the different nanostructured surfaces.
• Assessment of surface biocompatibility before and after laser modification.

Main Results:

• Nanostructured surfaces demonstrated good biocompatibility, both before and after laser modification.
• Laser-induced patterns on nanowires facilitated the growth and orientation of adhered myocardial tissue.
• Scalability of laser patterning allows for controlled surface modification for tissue engineering scaffolds.

Conclusions:

• Laser-patterned nanostructured surfaces show significant potential for guiding cardiomyocyte behavior.
• These findings support the development of advanced scaffolds for engineering functional myocardial tissue.
• This approach offers a promising strategy for future myocardial regenerative therapies.