Polydimethylsiloxane lanes enhance sarcomere organization in human ESC-derived cardiomyocytes

Brett N. Napiwocki, Max R. Salick, Randolph S. Ashton, Wendy C. Crone

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Human embryonic stem cell-derived cardiomyocytes (hESC-CMs) hold great potential in many areas of research such as cardiac tissue regeneration, cardiotoxicity screening and human heart disease models; however, before any of these applications can be realized, hESC-CMs need to progress from an immature phenotype to one that more closely resembles their adult counterparts in vivo. Current immature hESC-CMs can be characterized by their rounded morphology, disorganized contractile apparatus and circumferential gap junction expression. In an effort to improve the maturation of hESCCMs, prior work in our lab used micropatterned lanes of Matrigel and fibronectin extracellular matrix proteins on glass slides to control cell shape. From these experiments it was found that widths ranging from 30 to 80 μm promoted the best sarcomere development and nuclear alignment in a pure population of hESC-CMs. In this new system, a pure population of hESCCMs are seeded onto lanes of Matrigel on polydimethylsiloxane (PDMS) to investigate the portability of this technique to other substrate systems and how the substrate stimuli influences maturation. The same trend in nuclear alignment and sarcomere organization with lane width was observed when hESC-CMs were seeded onto lanes of Matrigel on PDMS as was found in the experiments utilizing glass as the substrate. By restricting cell adhesion and controlling substrate stiffness it may be possible to enhance the maturation of hESC-CMs in vitro which will provide a more physiological relevant phenotype that can then be used in the aforementioned applications.

Original languageEnglish (US)
Title of host publicationMechanics of Biological Systems and Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics
EditorsChad S. Korach, Srinivasan Arjun Tekalur, Pablo Zavattieri
PublisherSpringer New York LLC
Number of pages7
ISBN (Print)9783319214542
StatePublished - 2016
Externally publishedYes
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015 - Costa Mesa, United States
Duration: Jun 8 2015Jun 11 2015

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


ConferenceSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015
Country/TerritoryUnited States
CityCosta Mesa

Bibliographical note

Funding Information:
This research was supported with funds from the National Institutes of Health Grant K18 HL105504 from the Heart, Blood and Lung Institute and the Graduate School of the University of Wisconsin-Madison.

Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2016.

Copyright 2016 Elsevier B.V., All rights reserved.


  • Cardiac tissue engineering
  • Cardiomyocyte
  • Microcontact printing
  • PDMS
  • Stem cell


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