Journal
ANNALS OF BIOMEDICAL ENGINEERING
Volume 40, Issue 3, Pages 598-605Publisher
SPRINGER
DOI: 10.1007/s10439-011-0403-5
Keywords
Neural crest stem cells; Cyclic uniaxial strain; Micropatterning; Anisotropic
Categories
Funding
- National Institutes of Health [EB012240, HL083900]
- Innovation and Attracting Talents Program for College
- University of China [B06023]
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Neural crest stem cells (NCSCs) are multipotent and play an important role during the development and tissue regeneration. However, the anisotropic effects of mechanical strain on NCSCs are not known. To investigate the anisotropic mechanosensing by NCSCs, NCSCs derived from induced pluripotent stem cells were cultured on micropatterned membranes, and subjected to cyclic uniaxial strain in the direction parallel or perpendicular to the microgrooves. Cell and nuclear shape were both regulated by micropatterning and mechanical strain. Among the unpatterned, parallel-patterned and perpendicular-patterned groups, mechanical strain caused an increase in histone deacetylase activity in the parallel-patterned group, accompanied by the increase of cell proliferation. In addition, mechanical strain increased the expression of contractile marker calponin-1 but not other differentiation markers in the unpatterned and parallel-patterned groups. These results demonstrated that NCSCs responded differently to the anisotropic mechanical environment. Understanding the mechanical regulation of NCSCs will reveal the role of mechanical factors in NCSC differentiation during development, and provide a basis for using NCSCs for tissue engineering.
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