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Title: Structural maturation of myofilaments in engineered 3D cardiac microtissues characterized using small angle x-ray scattering

Journal Article · · Physical Biology

Abstract Understanding the structural and functional development of human-induced pluripotent stem-cell-derived cardiomyocytes (hiPSC-CMs) is essential to engineering cardiac tissue that enables pharmaceutical testing, modeling diseases, and designing therapies. Here we use a method not commonly applied to biological materials, small angle x-ray scattering, to characterize the structural development of hiPSC-CMs within three-dimensional engineered tissues during their preliminary stages of maturation. An x-ray scattering experimental method enables the reliable characterization of the cardiomyocyte myofilament spacing with maturation time. The myofilament lattice spacing monotonically decreases as the tissue matures from its initial post-seeding state over the span of 10 days. Visualization of the spacing at a grid of positions in the tissue provides an approach to characterizing the maturation and organization of cardiomyocyte myofilaments and has the potential to help elucidate mechanisms of pathophysiology, and disease progression, thereby stimulating new biological hypotheses in stem cell engineering.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0012704
OSTI ID:
2325503
Alternate ID(s):
OSTI ID: 2320318; OSTI ID: 2336579
Journal Information:
Physical Biology, Journal Name: Physical Biology Journal Issue: 3 Vol. 21; ISSN 1478-3967
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
Country unknown/Code not available
Language:
English

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