Abstract
We describe a general approach to produce bone and cartilaginous structures utilizing the self-regenerative capacity of the intercostal rib space to treat a deformed metacarpophalangeal joint and microtia. Anatomically precise 3D molds were positioned on the perichondro-periosteal or perichondral flap of the intercostal rib without any other exogenous elements. We find anatomically precise metacarpal head and auricle constructs within the implanted molds after 6 months. The regenerated metacarpal head was used successfully to surgically repair the deformed metacarpophalangeal joint. Auricle reconstructive surgery in five unilateral microtia patients yielded good aesthetic and functional results. Long-term follow-up revealed the auricle constructs were safe and stable. Single-cell RNA sequencing analysis reveal early infiltration of a cell population consistent with mesenchymal stem cells, followed by IL-8-stimulated differentiation into chondrocytes. Our results demonstrate the repair and regeneration of tissues using only endogenous factors and a viable treatment strategy for bone and tissue structural defects.
| Original language | English |
|---|---|
| Article number | 101156 |
| Number of pages | 17 |
| Journal | Cell Reports Medicine |
| Volume | 4 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 15 Aug 2023 |
Keywords
- auricular reconstruction
- cartilage regeneration
- endogenous stem cells
- joint reconstruction
- regeneration medicine
- tissue regeneration
ASJC Scopus subject areas
- General Biochemistry,Genetics and Molecular Biology
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