Controllable ligand spacing stimulates cellular mechanotransduction and promotes stem cell osteogenic differentiation on soft hydrogels
Hydrogels with tunable mechanical properties have provided a tremendous opportunity to regulate stem cell differentiation. Hydrogels with osteoid (about 30-40 kPa) or higher stiffness are usually required to induce the osteogenic differentiation of mesenchymal stem cells (MSCs). It is yet difficult...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2021
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| In: |
Biomaterials
Year: 2020, Volume: 268, Pages: 1-12 |
| ISSN: | 1878-5905 |
| DOI: | 10.1016/j.biomaterials.2020.120543 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.biomaterials.2020.120543 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0142961220307894 
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| Author Notes: | Man Zhang, Qian Sun, Yiling Liu, Zhiqin Chu, Leixiao Yu, Yong Hou, Heemin Kang, Qiang Wei, Weifeng Zhao, Joachim P. Spatz, Changsheng Zhao, Elisabetta A. Cavalcanti-Adam |
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| 245 | 1 | 0 | |a Controllable ligand spacing stimulates cellular mechanotransduction and promotes stem cell osteogenic differentiation on soft hydrogels |c Man Zhang, Qian Sun, Yiling Liu, Zhiqin Chu, Leixiao Yu, Yong Hou, Heemin Kang, Qiang Wei, Weifeng Zhao, Joachim P. Spatz, Changsheng Zhao, Elisabetta A. Cavalcanti-Adam |
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| 520 | |a Hydrogels with tunable mechanical properties have provided a tremendous opportunity to regulate stem cell differentiation. Hydrogels with osteoid (about 30-40 kPa) or higher stiffness are usually required to induce the osteogenic differentiation of mesenchymal stem cells (MSCs). It is yet difficult to achieve the same differentiation on very soft hydrogels, because of low environmental mechanical stimuli and restricted cellular mechanotransduction. Here, we modulate cellular spatial sensing of integrin-adhesive ligands via quasi-hexagonally arranged nanopatterns to promote cell mechanosensing on hydrogels having low stiffness (about 3 kPa). The increased interligand spacing has been shown to regulate actomyosin force loading to recruit extra integrins on soft hydrogels. It therefore activates mechanotransduction and promotes the osteogenic differentiation of MSCs on soft hydrogels to the level comparable with the one observed on osteoid stiffness. Our work opens up new possibilities for the design of biomaterials and tissue scaffolds for regenerative therapeutics. | ||
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| 650 | 4 | |a Differentiation | |
| 650 | 4 | |a Hydrogel | |
| 650 | 4 | |a Ligand spacing | |
| 650 | 4 | |a Mechanotransduction | |
| 650 | 4 | |a Mesenchymal stem cell | |
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| 700 | 1 | |a Liu, Yiling |e VerfasserIn |4 aut | |
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