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Ageing modulates human dermal fibroblast contractility : quantification using nano-biomechanical testing
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Yu, Zhuonan, Smith, Matthew J., Siow, Richard C. M. and Liu, Kuo-Kang (2021) Ageing modulates human dermal fibroblast contractility : quantification using nano-biomechanical testing. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, 1868 (5). 118972. doi:10.1016/j.bbamcr.2021.118972
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Official URL: http://dx.doi.org/10.1016/j.bbamcr.2021.118972
Abstract
Dermal fibroblasts play a key role in maintaining homoeostasis and functionality of the skin. Their contractility plays a role in changes observed during ageing, especially in processes such as wound healing, inflammation, wrinkling and scar tissue formation as well as structural changes on extracellular matrix. Although alternations in skin physiology and morphology have been previously described, there remains a paucity of information about the influence of chronological ageing on dermal fibroblast contractility. In this study, we applied a novel nano-biomechanical technique on cell-embedded collagen hydrogels in combination with mathematical modelling and numerical simulation to measure contraction forces of normal human dermal fibroblasts (NHDF). We achieved quantitative differentiation of the contractility of cells derived from ‘young’ (< 30 years old) and ‘aged’ (> 60 years old) donors. Transforming growth factor β1 (TGF-β1) was used to stimulate the fibroblasts to assess their contractile potential. NHDF from aged donors exhibited a greater basal contractile force, while in contrast, NHDF from young donors have shown a significantly larger contractile force in response to TGF-β1 treatment. These findings validate our nano-biomechanical measurement technique and provide new insights for considering NHDF contractility in regenerative medicine and as a biomarker of dermal ageing processes.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QH Natural history Q Science > QP Physiology |
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| Divisions: | Faculty of Science > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Cells -- Mechanical properties, Fibroblasts -- Adhesion, Fibroblast growth factors , Aging , Skin -- Physiology | ||||||||
| Journal or Publication Title: | Biochimica et Biophysica Acta (BBA) - Molecular Cell Research | ||||||||
| Publisher: | Elsevier | ||||||||
| ISSN: | 0167-4889 | ||||||||
| Official Date: | April 2021 | ||||||||
| Dates: |
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| Volume: | 1868 | ||||||||
| Number: | 5 | ||||||||
| Article Number: | 118972 | ||||||||
| DOI: | 10.1016/j.bbamcr.2021.118972 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| RIOXX Funder/Project Grant: |
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