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Mechanical memory and dosing influence stem cell fate

Open access
Yang, Chun, Tibbitt, Mark W., Basta, Lena, Anseth, Kristi S.·2014·Nature Materials

Abstract

We investigated whether stem cells remember past physical signals and whether these can be exploited to dose cells mechanically. We found that the activation of the Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding domain (TAZ) as well as the pre-osteogenic transcription factor RUNX2 in human mesenchymal stem cells (hMSCs) cultured on soft poly(ethylene glycol) (PEG) hydrogels (Young’s modulus E ~ 2 kPa) depended on prior culture time on stiff tissue culture polystyrene (TCPS; E ~ 3 GPa). Additionally, mechanical dosing of hMSCs cultured on initially stiff (E ~ 10 kPa) and then soft (E ~ 2 kPa) phototunable PEG hydrogels resulted in either reversible - or above a threshold mechanical dose, irreversible - activation of YAP/TAZ and RUNX2. We also found that increased mechanical dosing on supraphysiologically stiff TCPS biases hMSCs toward osteogenic differentiation. We conclude that stem cells possess mechanical memory - with YAP/TAZ acting as an intracellular mechanical rheostat - that stores information from past physical environments and influences the cells’ fate.

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Metadata

Authors
Yang, C., Tibbitt, M. W., Basta, L., & Anseth, K. S.
Venue
Nature Materials
Published
2014-03-16
Volume
13
Issue
6
Pages
645-652
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W2025522134
Cited by
1,160
References
6
FWCI
42.23
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Mechanical memory and dosing influence stem cell fate. https://app.cochat.ai/papers/10.1038/nmat3889
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Yang, C., Tibbitt, M. W., Basta, L., & Anseth, K. S. (2014). Mechanical memory and dosing influence stem cell fate. Nature Materials. https://doi.org/10.1038/nmat3889

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