Nature communications, 2019-02, Vol.10 (1), p.609-609, Article 609
2019
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- Autor(en) / Beteiligte
- Titel
- Cytoskeletal stiffening in synthetic hydrogels
- Ist Teil von
- Nature communications, 2019-02, Vol.10 (1), p.609-609, Article 609
- Ort / Verlag
- England: Nature Publishing Group
- Erscheinungsjahr
- 2019
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- Although common in biology, controlled stiffening of hydrogels in vitro is difficult to achieve; the required stimuli are commonly large and/or the stiffening amplitudes small. Here, we describe the hierarchical mechanics of ultra-responsive hybrid hydrogels composed of two synthetic networks, one semi-flexible and stress-responsive, the other flexible and thermoresponsive. Heating collapses the flexible network, which generates internal stress that causes the hybrid gel to stiffen up to 50 times its original modulus; an effect that is instantaneous and fully reversible. The average generated forces amount to ~1 pN per network fibre, which are similar to values found for stiffening resulting from myosin molecular motors in actin. The excellent control, reversible nature and large response gives access to many biological and bio-like applications, including tissue engineering with truly dynamic mechanics and life-like matter.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 2041-1723eISSN: 2041-1723DOI: 10.1038/s41467-019-08569-4Titel-ID: cdi_doaj_primary_oai_doaj_org_article_c2e716e4015a428897d44b9a2e89f0f6
- Format
- –
- Schlagworte
- Actin, Actins - chemistry, Biomechanical Phenomena, Cytoskeleton, Cytoskeleton - metabolism, Elastic Modulus, Humans, Hydrogels, Hydrogels - chemical synthesis, Hydrogels - chemistry, Mechanics (physics), Molecular motors, Myosin, Myosins - chemistry, Residual stress, Scattering, Small Angle, Stiffening, Stress, Mechanical, Temperature, Tissue engineering, Tissue Engineering - methods, X-Ray Diffraction