Local mechanical stimuli correlate with tissue growth in axolotl salamander joint morphogenesis
Proceedings of the Royal Society B: Biological Sciences, ISSN: 1471-2954, Vol: 289, Issue: 1975, Page: 20220621
2022
- 8Citations
- 11Captures
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Metrics Details
- Citations8
- Citation Indexes8
- CrossRef5
- Captures11
- Readers11
- 11
Article Description
Movement-induced forces are critical to correct joint formation, but it is unclear how cells sense and respond to these mechanical cues. To study the role of mechanical stimuli in the shaping of the joint, we combined experiments on regenerating axolotl (Ambystoma mexicanum) forelimbs with a poroelastic model of bone rudiment growth. Animals either regrew forelimbs normally (control) or were injected with a transient receptor potential vanilloid 4 (TRPV4) agonist during joint morphogenesis. We quantified growth and shape in regrown humeri from whole-mount light sheet fluorescence images of the regenerated limbs. Results revealed significant differences in morphology and cell proliferation between groups, indicating that TRPV4 desensitization has an effect on joint shape. To link TRPV4 desensitization with impaired mechanosensitivity, we developed a finite element model of a regenerating humerus. Local tissue growth was the sum of a biological contribution proportional to chondrocyte density, which was constant, and a mechanical contribution proportional to fluid pressure. Computational predictions of growth agreed with experimental outcomes of joint shape, suggesting that interstitial pressure driven from cyclic mechanical stimuli promotes local tissue growth. Predictive computational models informed by experimental findings allow us to explore potential physical mechanisms involved in tissue growth to advance our understanding of the mechanobiology of joint morphogenesis.2022 The Author(s) Published by the Royal Society. All rights reserved.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85130185179&origin=inward; http://dx.doi.org/10.1098/rspb.2022.0621; http://www.ncbi.nlm.nih.gov/pubmed/35582804; https://royalsocietypublishing.org/doi/10.1098/rspb.2022.0621; https://zenodo.org/record/6827802; https://dx.doi.org/10.1098/rspb.2022.0621
The Royal Society
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