Ma, Z. et al. Laser patterning for the study of MSC cardiogenic differentiation at the single-cell level. Light: Science & Applications, 2, e68 (2013).
DOI:
Ma, Z. et al. Laser patterning for the study of MSC cardiogenic differentiation at the single-cell level. Light: Science & Applications, 2, e68 (2013). DOI: 10.1038/lsa.2013.24.
Laser patterning for the study of MSC cardiogenic differentiation at the single-cell level
Mesenchymal stem cells (MSCs) have been cited as contributors to heart repair through cardiogenic differentiation and multiple cellular interactions
including the paracrine effect
cell fusion
and mechanical and electrical couplings. Due to heart–muscle complexity
progress in the development of knowledge concerning the role of MSCs in cardiac repair is heavily based on MSC–cardiomyocyte coculture. In conventional coculture systems
however
the
in vivo
cardiac muscle structure
in which rod-shaped cells are connected end-to-end
is not sustained; instead
irregularly shaped cells spread randomly
resulting in randomly distributed cell junctions. Consequently
contact-mediated cell–cell interactions (e.g.
the electrical triggering signal and the mechanical contraction wave that propagate through MSC–cardiomyocyte junctions) occur randomly. Thus
the data generated on the beneficial effects of MSCs may be irrelevant to
in vivo
biological processes. In this study
we explored whether cardiomyocyte alignment
the most important phenotype
is relevant to stem cell cardiogenic differentiation. Here
we report (ⅰ) the construction of a laser-patterned
biochip-based
stem cell–cardiomyocyte coculture model with controlled cell alignment; and (ⅱ) single-cell-level data on stem cell cardiogenic differentiation under
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