2019
DOI: 10.1088/1758-5090/ab1436
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Recellularization of auricular cartilage via elastase-generated channels

Abstract: Decellularized tissue matrices are promising substrates for tissue generation by stem cells to replace poorly regenerating tissues such as cartilage. However, the dense matrix of decellularized cartilage impedes colonisation by stem cells. Here, we show that digestion of elastin fibre bundles traversing auricular cartilage creates channels through which cells can migrate into the matrix. Human chondrocytes and bone marrow-derived mesenchymal stromal cells efficiently colonize elastin-treated scaffolds through … Show more

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Cited by 11 publications
(8 citation statements)
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“…Decellularized tracheal matrices have attracted much attention in recent years because of their similar composition and microenvironments to natural tracheal cartilage 7a. However, the dense tracheal cartilage matrix makes it difficult for original cellular materials to be detached from or for new cells to grow into the matrix 20. Additionally, the decellularized tracheal matrix is difficult to produce in bulk due to donor shortages 21.…”
Section: Discussionmentioning
confidence: 99%
“…Decellularized tracheal matrices have attracted much attention in recent years because of their similar composition and microenvironments to natural tracheal cartilage 7a. However, the dense tracheal cartilage matrix makes it difficult for original cellular materials to be detached from or for new cells to grow into the matrix 20. Additionally, the decellularized tracheal matrix is difficult to produce in bulk due to donor shortages 21.…”
Section: Discussionmentioning
confidence: 99%
“…In recent years, some researchers have developed a new type of enzymatic perforated bovine/human auricle cartilage ECM, which mainly digested elastic fibers in ear cartilage ECM by elastase, and created a channel network, in which the recellularized cells could migrate to the internal matrix and secrete glycosaminoglycan in situ to produce cartilage-like tissues. [64,65] In addition, the preservation of the vasculature is also one of the difficulties in constructing functional tissue engineered ears. Duisit et al [66] performed perfusiondecellularization on 12 human ears with vascular pedicles, and obtained the ECM with a preserved auricular vascular tree for the first time.…”
Section: Earmentioning
confidence: 99%
“…Although several efforts have been dedicated to reconstruct cartilage, the acellular cartilage matrix is very dense, which limits the inward growth of cells and hinders the recellularization and recovery of defective cartilage functions. In recent years, some researchers have developed a new type of enzymatic perforated bovine/human auricle cartilage ECM, which mainly digested elastic fibers in ear cartilage ECM by elastase, and created a channel network, in which the recellularized cells could migrate to the internal matrix and secrete glycosaminoglycan in situ to produce cartilage-like tissues [64,65] …”
Section: Research Progress In Plastic and Reconstructive Surgerymentioning
confidence: 99%
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“…Cadaveric decellularized cartilage has for instance been explored after crosslinking for joint resurfacing 37 ; irradiated cadaveric costal or nasal cartilage is sometimes used for nose reconstructions 38,39 ; and devitalized frozen allografts are routinely used for meniscus replacement in the clinic 40 . While functionally effective, host cells cannot repopulate decellularized cartilage due to the extreme density of the collagen fibrillar network and glycosaminoglycans (GAGs) that constitute its extracellular matrix 41,42 . This could be particularly problematic in pediatric patients as they are rapidly growing, and an acellular graft would not undergo the natural process of expansion and maturation of living tissue.…”
Section: Introductionmentioning
confidence: 99%