cooperative regulation of substrate stiffness and extracellular matrix proteins in skin wound healing of axolotls
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2015
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Abstract
Urodele amphibians (Ambystoma mexicanum), unique among vertebrates, can regenerate appendages and other body parts entirely and functionally through a scar-free healing process. The wound epithelium covering the amputated or damaged site forms early and is essential for initiating the subsequent regenerative steps. However, the molecular mechanism through which the wound reepithelializes during regeneration remains unclear. In this study, we developed an in vitro culture system that mimics an in vivo wound healing process; the biomechanical properties in the system were precisely defined and manipulated. Skin explants that were cultured on 2 to 50 kPa collagen-coated substrates rapidly reepithelialized within 10 to 15 h; however, in harder (1 GPa) and other extracellular matrices (tenascin-, fibronectin-, and laminin-coated environments), the wound epithelium moved slowly. Furthermore, the reepithelialization rate of skin explants from metamorphic axolotls cultured on a polystyrene plate (1 GPa) increased substantially. These findings afford new insights and can facilitate investigating wound epithelium formation during early regeneration using biochemical and mechanical techniques.
| Reference Key |
huang2015biomedcooperative
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|---|---|
| Authors | ;Ting-Yu Huang;Cheng-Han Wu;Mu-Hui Wang;Bo-Sung Chen;Ling-Ling Chiou;Hsuan-Shu Lee |
| Journal | spectrochimica acta - part a: molecular and biomolecular spectroscopy |
| Year | 2015 |
| DOI |
10.1155/2015/712546
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| URL | |
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