Pressureless mechanical induction of stem cell differentiation is dose and frequency dependent.
Pressureless mechanical induction of stem cell differentiation is dose and frequency dependent.
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DOI:
10.1371/journal.pone.0081362
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Stark WJ
中科院分区:
文献类型:
--
作者:
Fuhrer R;Hofmann S;Hild N;Vetsch JR;Herrmann IK;Grass RN;Stark WJ
Movement is a key characteristic of higher organisms. During mammalian embryogenesis fetal movements have been found critical to normal tissue development. On the single cell level, however, our current understanding of stem cell differentiation concentrates on inducing factors through cytokine mediated biochemical signaling. In this study, human mesenchymal stem cells and chondrogenesis were investigated as representative examples. We show that pressureless, soft mechanical stimulation precipitated by the cyclic deformation of soft, magnetic hydrogel scaffolds with an external magnetic field, can induce chondrogenesis in mesenchymal stem cells without any additional chondrogenesis transcription factors (TGF-β1 and dexamethasone). A systematic study on the role of movement frequency revealed a classical dose-response relationship for human mesenchymal stem cells differentiation towards cartilage using mere mechanical stimulation. This effect could even be synergistically amplified when exogenous chondrogenic factors and movement were combined.
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